base cmd module finished

This commit is contained in:
2026-05-02 19:20:46 +08:00
parent 2cdd3165b2
commit dc2b21a500
37 changed files with 7860 additions and 9 deletions

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# This is a stub package designed to roughly emulate the _yaml
# extension module, which previously existed as a standalone module
# and has been moved into the `yaml` package namespace.
# It does not perfectly mimic its old counterpart, but should get
# close enough for anyone who's relying on it even when they shouldn't.
import yaml
# in some circumstances, the yaml module we imoprted may be from a different version, so we need
# to tread carefully when poking at it here (it may not have the attributes we expect)
if not getattr(yaml, '__with_libyaml__', False):
from sys import version_info
exc = ModuleNotFoundError if version_info >= (3, 6) else ImportError
raise exc("No module named '_yaml'")
else:
from yaml._yaml import *
import warnings
warnings.warn(
'The _yaml extension module is now located at yaml._yaml'
' and its location is subject to change. To use the'
' LibYAML-based parser and emitter, import from `yaml`:'
' `from yaml import CLoader as Loader, CDumper as Dumper`.',
DeprecationWarning
)
del warnings
# Don't `del yaml` here because yaml is actually an existing
# namespace member of _yaml.
__name__ = '_yaml'
# If the module is top-level (i.e. not a part of any specific package)
# then the attribute should be set to ''.
# https://docs.python.org/3.8/library/types.html
__package__ = ''

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pip

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Metadata-Version: 2.4
Name: PyYAML
Version: 6.0.3
Summary: YAML parser and emitter for Python
Home-page: https://pyyaml.org/
Download-URL: https://pypi.org/project/PyYAML/
Author: Kirill Simonov
Author-email: xi@resolvent.net
License: MIT
Project-URL: Bug Tracker, https://github.com/yaml/pyyaml/issues
Project-URL: CI, https://github.com/yaml/pyyaml/actions
Project-URL: Documentation, https://pyyaml.org/wiki/PyYAMLDocumentation
Project-URL: Mailing lists, http://lists.sourceforge.net/lists/listinfo/yaml-core
Project-URL: Source Code, https://github.com/yaml/pyyaml
Platform: Any
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Cython
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Programming Language :: Python :: 3.14
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Text Processing :: Markup
Requires-Python: >=3.8
License-File: LICENSE
Dynamic: author
Dynamic: author-email
Dynamic: classifier
Dynamic: description
Dynamic: download-url
Dynamic: home-page
Dynamic: license
Dynamic: license-file
Dynamic: platform
Dynamic: project-url
Dynamic: requires-python
Dynamic: summary
YAML is a data serialization format designed for human readability
and interaction with scripting languages. PyYAML is a YAML parser
and emitter for Python.
PyYAML features a complete YAML 1.1 parser, Unicode support, pickle
support, capable extension API, and sensible error messages. PyYAML
supports standard YAML tags and provides Python-specific tags that
allow to represent an arbitrary Python object.
PyYAML is applicable for a broad range of tasks from complex
configuration files to object serialization and persistence.

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Wheel-Version: 1.0
Generator: setuptools (80.9.0)
Root-Is-Purelib: false
Tag: cp39-cp39-manylinux_2_17_x86_64
Tag: cp39-cp39-manylinux2014_x86_64
Tag: cp39-cp39-manylinux_2_28_x86_64

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Copyright (c) 2017-2021 Ingy döt Net
Copyright (c) 2006-2016 Kirill Simonov
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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_yaml
yaml

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# Copyright Sunhpc Project Developers. See COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import functools
import os
import re
from typing import Optional
import sunhpc.paths
#: PEP440 canonical <major>.<minor>.<micro>.<devN> string
__version__ = "1.0.0.dev0"
sunhpc_version = __version__
#: The current Package API version implemented by this version of Sunhpc. The Package API defines
#: the Python interface for packages as well as the layout of package repositories. The minor
#: version is incremented when the package API is extended in a backwards-compatible way. The major
#: version is incremented upon breaking changes. This version is changed independently from the
#: Sunhpc version.
package_api_version = (2, 4)
#: The minimum Package API version that this version of Sunhpc is compatible with. This should
#: always be a tuple of the form ``(major, 0)``, since compatibility with vX.Y implies
#: compatibility with vX.0.
min_package_api_version = (1, 0)
def __try_int(v):
try:
return int(v)
except ValueError:
return v
#: (major, minor, micro, dev release) tuple
sunhpc_version_info = tuple([__try_int(v) for v in __version__.split(".")])
@functools.lru_cache(maxsize=None)
def get_sunhpc_commit() -> Optional[str]:
"""Get the Sunhpc git commit sha.
Returns:
(str or None) the commit sha if available, otherwise None
"""
git_path = os.path.join(sunhpc.paths.prefix, ".git")
if not os.path.exists(git_path):
return None
git = sunhpc.util.git.git()
if not git:
return None
rev = git(
"-C",
sunhpc.paths.prefix,
"rev-parse",
"HEAD",
output=str,
error=os.devnull,
fail_on_error=False,
)
if git.returncode != 0:
return None
match = re.match(r"[a-f\d]{7,}$", rev)
return match.group(0) if match else None
def get_version() -> str:
"""Get a descriptive version of this instance of Sunhpc.
Outputs ``"<PEP440 version> (<git commit sha>)"``.
The commit sha is only added when available.
"""
commit = get_sunhpc_commit()
if commit:
return f"{sunhpc_version} ({commit})"
return sunhpc_version
def get_short_version() -> str:
"""Short Sunhpc version."""
return f"{sunhpc_version_info[0]}.{sunhpc_version_info[1]}"
__all__ = [
"sunhpc_version_info",
"sunhpc_version",
"get_version",
"get_sunhpc_commit",
"get_short_version",
"package_api_version",
"min_package_api_version",
]

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import os
import re
import sys
import pwd
import xml
import syslog
import sunhpc.util
from xml.sax import saxutils
from xml.sax import handler
from xml.sax import make_parser
def Abort(message, doExit=1):
'''Print a standard error message and throw a
sunhpc.util.CommandError
'''
syslog.syslog(syslog.LOG_ERR, message)
raise sunhpc.util.CommandError(message)
class DocStringHandler(
handler.ContentHandler, handler.DTDHandler,
handler.EntityResolver, handler.ErrorHandler):
def __init__(self, name='', users=[]):
handler.ContentHandler.__init__(self)
self.text = ''
self.name = name
self.users = users
self.section = {}
self.section['description'] = ''
self.section['arg'] = []
self.section['param'] = []
self.section['example'] = []
self.section['related'] = []
self.parser = make_parser()
self.parser.setContentHandler(self)
def getDocbookText(self):
s = ''
s += '<section id="sunhpc-%s" xreflabel="%s">\n' % \
('-'.join(self.name.split(' ')), self.name)
s += '<title>%s</title>\n' % self.name
s += '<cmdsynopsis>\n'
s += '\t<command>sunhpc %s</command>\n' % self.name
for ((name, type, opt, rep), txt) in self.section['arg']:
if opt:
choice = 'opt'
else:
choice = 'req'
if rep:
repeat = 'repeat'
else:
repeat = 'norepeat'
s += '\t<arg rep="%s" choice="%s">%s</arg>\n' % \
(repeat, choice, name)
for ((name, type, opt, rep), txt) in self.section['param']:
if opt:
choice = 'opt'
else:
choice = 'req'
if rep:
repeat = 'repeat'
else:
repeat = 'norepeat'
s += '\t<arg rep="%s" choice="%s">' % (repeat, choice)
s += '%s=<replaceable>%s</replaceable>' % (name, type)
s += '</arg>\n'
s += '</cmdsynopsis>\n'
s += '<para>\n'
s += saxutils.escape(self.section['description'])
s += '\n</para>\n'
if self.section['arg']:
s += '<variablelist><title>arguments</title>\n'
for ((name, type, opt, rep), txt) in \
self.section['arg']:
s += '\t<varlistentry>\n'
if opt:
term = '<optional>%s</optional>' % name
else:
term = name
s += '\t<term>%s</term>\n' % term
s += '\t<listitem>\n'
s += '\t<para>\n'
s += saxutils.escape(txt)
s += '\n\t</para>\n'
s += '\t</listitem>\n'
s += '\t</varlistentry>\n'
s += '</variablelist>\n'
if self.section['param']:
s += '<variablelist><title>parameters</title>\n'
for ((name, type, opt, rep), txt) in \
self.section['param']:
s += '\t<varlistentry>\n'
if opt:
optStart = '<optional>'
optEnd = '</optional>'
else:
optStart = ''
optEnd = ''
key = '%s=' % name
val = '<replaceable>%s</replaceable>' % type
s += '\t<term>%s%s%s%s</term>\n' % \
(optStart, key, val, optEnd)
s += '\t<listitem>\n'
s += '\t<para>\n'
s += saxutils.escape(txt)
s += '\n\t</para>\n'
s += '\t</listitem>\n'
s += '\t</varlistentry>\n'
s += '</variablelist>\n'
if self.section['example']:
s += '<variablelist><title>examples</title>\n'
for (cmd, txt) in self.section['example']:
s += '\t<varlistentry>\n'
s += '\t<term>\n'
if 'root' in self.users:
s += '# '
else:
s += '$ '
s += 'sunhpc %s' % cmd
s += '\n\t</term>\n'
s += '\t<listitem>\n'
s += '\t<para>\n'
s += saxutils.escape(txt)
s += '\n\t</para>\n'
s += '\t</listitem>\n'
s += '\t</varlistentry>\n'
s += '</variablelist>\n'
if self.section['related']:
s += '<variablelist><title>related commands</title>\n'
for related in self.section['related']:
s += '\t<varlistentry>\n'
s += '\t<term>'
s += '<xref linkend="sunhpc-%s">' % '-'.join(related.split(' '))
s += '</term>\n'
s += '\t<listitem>\n'
s += '\t<para>\n'
s += '\n\t</para>\n'
s += '\t</listitem>\n'
s += '\t</varlistentry>\n'
s += '</variablelist>\n'
s += '</section>'
return s
def getUsageText(self):
s = ''
for ((name, type, opt, rep), txt) in self.section['arg']:
if opt:
s += '[%s]' % name
else:
s += '{%s}' % name
if rep:
s += '...'
s += ' '
for ((name, type, opt, rep), txt) in self.section['param']:
if opt:
s += '[%s=%s]' % (name, type)
else:
s += '{%s=%s}' % (name, type)
if rep:
s += '...'
s += ' '
if s and s[-1] == ' ':
return s[:-1]
else:
return s
def getSphinxText(self):
if 'root' in self.users:
prompt = '#'
else:
prompt = '$'
s = ':orphan:\n\n'
s += '%s\n' % self.name
s += '%s\n\n' % ("-" * len(self.name))
s += '.. role:: defn\n\n'
utxt = self.getUsageText()
if len(utxt):
s += ':defn:`sunhpc %s` *%s*\n' % (self.name, utxt)
else:
s += ':defn:`sunhpc %s` %s\n' % (self.name, utxt)
s += '\n\n**Description:**\n'
s += self.section['description'].replace('\t',' ')
if self.section['arg']:
s += '\n**Arguments:**\n\n'
for ((name, type, opt, rep), txt) in \
self.section['arg']:
if opt:
s += '*[%s]*' % name
else:
s += '*{%s}*' % name
txt = txt.replace('*', '\*')
s += '\n%s\n' % txt.replace('\t', ' ')
if self.section['param']:
s += '\n**Parameters:**\n\n'
for ((name, type, opt, rep), txt) in \
self.section['param']:
if opt:
s += '*[%s=%s]*' % (name, type)
else:
s += '*{%s=%s}*' % (name, type)
txt = txt.replace('*', '\*')
s += '\n%s\n' % txt.replace('\t', ' ')
if self.section['example']:
s += '\n**Examples:**\n'
for (cmd, txt) in self.section['example']:
txt = txt.replace('*', '\*')
s += '%s::\n\n' % txt.replace('\t',' ')
s += ' %s sunhpc %s\n' % (prompt, cmd)
if self.section['related']:
s += '\n**Related Commands:**\n\n'
for related in self.section['related']:
s += ' * :ref:`sunhpc-%s`\n' % related.replace(' ','-')
word = self.name.split()[0]
s += '\n:ref:`%s commands <%s-ref>`\n' % (word, word)
return s
def getPlainText(self):
if 'root' in self.users:
prompt = '#'
else:
prompt = '$'
s = ''
s += ' \n%s sunhpc %s %s' % (prompt, self.name, self.getUsageText())
s += '\n\nDescription:\n'
s += self.section['description']
if self.section['arg']:
s += '\nArguments:\n'
for ((name, type, opt, rep), txt) in \
self.section['arg']:
if opt:
s += ' [%s]' % name
else:
s += ' {%s}' % name
s += '%s\n' % txt
if self.section['param']:
s += '\nParameters:\n'
for ((name, type, opt, rep), txt) in \
self.section['param']:
if opt:
s += ' [%s=%s]' % (name, type)
else:
s += ' {%s=%s}' % (name, type)
s += '%s\n' % txt
if self.section['example']:
s += '\nExamples:\n\n'
for (cmd, txt) in self.section['example']:
s += ' %s sunhpc %s' % (prompt, cmd)
s += '%s\n' % txt
if self.section['related']:
s += '\nRelated Commands:\n\n'
for related in self.section['related']:
s += ' sunhpc %s\n' % related.replace(' ','-')
return s
def getParsedText(self):
return '%s' % self.section
def startElement(self, name, attrs):
if not self.section['description']:
self.section['description'] = self.text
self.key = None
self.text = ''
if name in [ 'arg', 'param' ]:
try:
dtype = attrs.get('type')
except:
dtype = 'string'
try:
optional = int(attrs.get('optional'))
except:
if name == 'arg':
optional = 0
if name == 'param':
optional = 1
try:
repeat = int(attrs.get('repeat'))
except:
repeat = 0
name = attrs.get('name')
self.key = (name, dtype, optional, repeat)
elif name == 'example':
self.key = attrs.get('cmd')
def endElement(self, name):
if name == 'docstring':
self.section['param'].sort()
self.section['related'].sort()
elif name in [ 'arg', 'param', 'example' ]:
self.section[name].append((self.key, self.text))
else:
if name in self.section:
self.section[name].append(self.text)
def characters(self, s):
self.text += s
class Command:
'''Base class for all Sunhpc commands the general command line form
is as follows:
sunhpc action component object [ <argname args> ... ]
action(s):
add
create
list
load
sync
'''
MustBeRoot = 1
def __init__(self, database):
self.db = database
self.text = ''
self.output = []
self.os = os.uname()[0].lower()
self.arch = os.uname()[4]
self.user = pwd.getpwuid(os.getuid()).pw_name
self._args = None
self._params = None
if 'SUNHPCDEBUG' in os.environ:
self._debug = True
else:
self._debug = False
def debug(self):
"""Return True if debug mode is enabled"""
return self._debug
def abort(self, msg):
syslog.syslog(syslog.LOG_ERR, msg.split('\n')[0])
raise sunhpc.util.CommandError(msg)
def strWordWrap(self, line, indent=''):
if 'COLUMNS' in os.environ:
cols = os.environ['COLUMNS']
else:
cols = 80
l = 0
s = ''
for word in line.split(' '):
if l + len(word) < cols:
s += '%s ' % word
l += len(word) + 1 # space
else:
s += '\n%s%s ' % (indent, word)
l += len(indent) + len(word) + 1 # space
return s
def isRootUser(self):
return os.getuid() == 0
def isApacheUser(self):
return self.user == 'apache'
def str2bool(self, s):
if s and s.upper() in [ 'ON', 'YES', 'Y', 'TRUE', '1']:
return True
else:
return False
def bool2str(self, b):
if b:
return 'yes'
else:
return 'no'
def clearText(self):
self.text = ''
def addText(self, s):
if s:
self.text += s
def getText(self):
return self.text
def beginOutput(self):
self.output = []
def addOutput(self, owner, vals):
'Append a list to the output list buffer.'
plist = [ '%s:' % owner ]
if isinstance(vals, (type([]))):
plist.extend(vals)
elif isinstance(vals, (type(()))):
for e in vals:
plist.append(e)
else:
plist.append(vals)
self.output.append(plist)
def endOutput(self, header=[], padChar='-', trimOwner=1, linesep='\n'):
if not self.output:
return
showHeader = True
if 'output-header' in self._params:
showHeader = self.str2bool(self._params['output-header'])
self.outputCols = []
if 'output-col' in self._params:
showCols = self._params['output-col'].split(',')
for i in header:
if i.lower() in showCols:
self.outputCols.append(True)
else:
self.outputCols.append(False)
if trimOwner:
owner = ''
self.startOfLine = 1
for line in self.output:
if not owner:
owner = line[0]
if not owner == line[0]:
self.startOfLine = 0
else:
self.startOfLine = 0
if header and showHeader:
plist = []
for field in header:
plist.append(field.upper())
output = [plist]
output.extend(self.output)
else:
output = self.output
colwidth = []
for line in output:
for i in range(0, len(line)):
if len(colwidth) <= i:
colwidth.append(0)
if type(line[i]) != type(''):
if line[i] == None:
itemlen = 0
else:
itemlen = len(repr(line[i]))
else:
itemlen = len(line[i])
if itemlen > colwidth[i]:
colwidth[i] = itemlen
o = ''
for line in output:
plist = []
for i in range(self.startOfLine, len(line)):
if line[i] == None:
s = ''
else:
s = str(line[i])
if padChar != '':
if s:
o = s.ljust(colwidth[i])
else:
o = ''.ljust(colwidth[i], padChar)
else:
o = s
plist.append(o)
self.addText('%s%s' % (self.outputRow(plist), linesep))
def outputRow(self, plist):
if self.outputCols:
l = []
for i in range(0, len(plist)):
if self.outputCols[i + self.startOfLine]:
l.append(plist[i])
return ' '.join(l)
else:
return ' '.join(plist)
def command(self, command, args=[]):
'''Import and run a Sunhpc command.
Returns and output string.
'''
modpath = 'sunhpc.commands.%s' % command
__import__(modpath)
mod = eval(modpath)
try:
o = getattr(mod, 'Command')
n = ' '.join(command.split('.'))
except AttributeError:
return ''
o.runWrapper(n, args)
return o.getText()
def fillParams(self, names, params=None):
'''
Returns a list of variables with either default
values of the values in the PARAMS dictionary.
: type names: list
: param names: a list of (key, default) tuples, where key
is a key name of params dictionary and default
is the default value if key in not in dict
: type params: dict
: param params: optional dictionary
For example::
(svc, comp) = self.fillParams (
('service', None),
('component', None))
Can also be written as::
(svc, comp) = self.fillParams(('service',), ('component', ))
'''
# make sure names is a list or tuple
if not isinstance(names, (type([]), type(()))):
names = [ names ]
dlist = []
for e in names:
if type(e) in [ type(()), type([]) ] \
and len(e) == 2:
tuples = ( e[0], e[1] )
else:
tuples = ( e[0], None )
dlist.append(tuples)
if not params:
params = self._params
rlist = []
for (key, default) in dlist:
if 'key' in params:
rlist.append(params[key])
else:
rlist.append(default)
return rlist
def fillPositionalArgs(self, names, params=None, args=None):
'''
The helper function will allow named parameters
to be used in lieu of positional arguments
Example::
Suppose command is of the form:
command <arg1> <arg2> <arg3>
Usually called as:
command foo bar baz
However if you name the arguments as parameters, say
arg1, arg2, arg3
Then, equivalent calls of the command are
command arg1=foo arg2=bar arg3=baz
command foo bar arg3=baz
command foo bar baz
command foo arg2=bar baz
Arguments:
paramlist = list of parameter names in the order
that their unnamed argument counterparts
apper eg. paramlist=('iface', 'mac')
params = list of parameters (e.g param=value)
args = args
Returns:
remaining args, Filled parameters
Example::
hostlist, iface, mac = self.fillPositionalArgs(
('iface','mac'), params, args)
'''
if not isinstance(names, (type([]), type(()))):
names = [ names ]
if not params:
params = self._params
if not args:
args = self._args
plist = []
for name in names:
if name in params:
plist.append(params[name])
else:
plist.append(None)
# now walk backwards through the args and pull off
# positional arguments that have not already been set
# as a param=<parameter>
trimmedArgs = args
vars = []
plist.reverse()
for e in plist:
if not e and len(trimmedArgs):
vars.append(trimmedArgs[-1])
trimmedArgs = trimmedArgs[:-1]
else:
vars.append(e)
# need to reverse the 'vars' to get them in the correct order
# since we processed them above in reverse order
vars.reverse()
rlist = []
rlist.append(trimmedArgs)
rlist.extend(vars)
return rlist
def runWrapper(self, name, args):
if args:
command = '%s %s' % (name, ' '.join(args))
else:
command = name
syslog.syslog(syslog.LOG_INFO,
'running command: %s for user: %s' % (command, self.user))
pdict = {} # flags
plist = [] # arguments
nparams = 0
flagpattern = re.compile(r'^-[a-zA-Z0-9-_+]+=')
for arg in args:
tokens = arg.split()
if tokens[0] == 'select':
plist.append(arg)
elif flagpattern.match(arg):
(key, val) = arg.split('=', 1)
pdict[key] = val
if nparams == 0:
pdict['@SUNHPCPARAM0'] = arg
nparams += 1
else:
plist.append(arg)
if plist and plist[0] == 'help':
self.help(name, pdict)
else:
if self.MustBeRoot and not \
(self.isRootUser() or self.isApacheUser()):
self.abort('command "%s" requires root privilege' % name)
else:
self._args = plist
self._params = pdict
try:
self.run(self._params, self._args)
except sunhpc.util.HostnotfoundException as e:
if self.debug():
traceback.print_exc()
self.abort(str(e))
def run(self, flags, args):
pass
def usage(self):
if self.__doc__:
handler = DocStringHandler()
parser = make_parser()
parser.setContentHandler(handler)
try:
parser.feed('<docstring>%s</docstring>' % self.__doc__)
except:
return '-- invalid doc string --'
return handler.getUsageText()
else:
return '-- missing doc string --'
def help(self, command, flags={}):
if not self.__doc__:
return
if self.MustBeRoot:
users = ['root', 'apache']
else:
users = []
if 'format' in flags:
format = flags['format'].lower()
else:
format = 'plain'
if format == 'raw':
i = 1
for line in self.__doc__.split('\n'):
self.addText('%d:%s\n' % (i, line))
i += 1
else:
handler = DocStringHandler(command, users)
parser = make_parser()
parser.setContentHandler(handler)
parser.feed('<docstring>%s</docstring>' % self.__doc__)
if format == 'docbook':
self.addText(handler.getDockbookText())
elif format == 'parsed':
self.addText(handler.getParsedText())
elif format == 'sphinx':
self.addText(handler.getSphinxText())
else:
self.addText(handler.getPlainText())

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import sunhpc.commands
class command(sunhpc.commands.Command):
MustBeRoot = 1

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import os
import re
import sys
import sunhpc.commands
class Command(sunhpc.commands.init.command):
"""
这个命令是初始化系统的相关配置,并且写入到配置文件.
<arg type='string' name='iface'>
提供一个内网的接口、例如: eth1
</arg>
<arg type='string' name='mnt'>
提供一个系统ISO文件、或者挂载路径、例如: /mnt/cdrom
</arg>
<param type='string' name='iface'>
提供一个内网的接口、例如: eth1
</param>
<param type='string' name='mnt'>
提供一个系统ISO文件、或者挂载路径、例如: /mnt/cdrom
</param>
<example cmd='init config eth1 /mnt/cdrom'>
使用eth1网络接口、和 /mnt/cdrom 挂载路径
</example>
<example cmd='init config iface=eth1 mnt=/mnt/cdrom'>
使用eth1网络接口、和 /mnt/cdrom 挂载路径
</example>
"""
def run(self, params, args):
print ('This is init opt ...')

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import sunhpc.commands
class command(sunhpc.commands.Command):
MustBeRoot = 0

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import os
import re
import sys
import sunhpc.file
import sunhpc.commands
class Command(sunhpc.commands.list.command):
"""
The Help Command print the usage of all the registered commands
<param optional='1' type='string' name='subdir'>
Relative of Python commands for listing help. This is used internally
only.
</param>
<example cmd='list help'>
List the help of all the commands.
</example>
<example cmd='list help subdir=list/host'>
List help for all commands under list/host
</example>
"""
def run(self, params, args):
(subdir, cols) = self.fillParams([ ('subdir', ),
('cols', 80) ], params)
if subdir:
filepath = os.path.join(sunhpc.commands.__path__[0], subdir)
modpath = 'sunhpc.commands.%s' % '.'.join(subdir.split('os.sep'))
else:
filepath = sunhpc.commands.__path__[0]
modpath = 'sunhpc.commands'
tree = sunhpc.file.Tree(filepath)
dirs = tree.getDirs()
sorted(dirs)
if 'COLUMNS' in os.environ:
cols = os.environ['COLUMNS']
for dir in dirs:
if not dir: continue
module = '%s.%s' % (modpath, '.'.join(dir.split(os.sep)))
__import__(module)
module = eval(module)
try:
o = getattr(module, 'Command')(None)
except AttributeError:
continue
if o.MustBeRoot and not self.isRootUser():
continue
cmd = ' '.join(dir.split(os.sep))
l = len(cmd) + 1
s = ''
for arg in o.usage().split():
if l + len(arg) < cols or cols == 0:
s += '%s ' % arg
l += len(arg) + 1 # space
else:
s += '\n\t%s ' % arg
l = len(arg) + 9 # tab + space
self.addText('%s %s\n' % (cmd, s))

426
lib/sunhpc/sunhpc/file.py Normal file
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import os
import re
import sys
import shutil
import xml.sax
import sunhpc.util
class File:
def __init__(self, file, timestamp=None, size=None):
self.setFile(file, timestamp, size)
self.imortal = 0
def __cmp__(self, file):
if self.getBaseName() != file.getBaseName() or \
self.timestamp == file.timestamp:
rc = 0
elif self.timestamp > file.timestamp:
rc = 1
else:
rc = -1
if rc and self.imortal + file.imortal == 1:
if self.imortal:
rc = 1
else:
rc = -1
return rc
def setFile(self, file, timestamp=None, size=None):
self.pathname = os.path.dirname(file)
self.filename = os.path.basename(file)
if None not in (timestamp, size):
self.timestamp = timestamp
self.size = size
elif not os.path.islink(file):
self.timestamp = os.path.getmtime(file)
self.size = os.path.getsize(file)
else:
orig = os.readlink(file)
if os.path.isfile(orig):
self.timestamp = os.path.getmtime(orig)
self.size = os.path.getsize(file)
else:
self.timestamp = 0
self.size = 0
def explode(self):
file = self.getFullName()
if os.path.islink(file):
orig = os.readlink(file)
if os.path.isfile(orig):
os.unlink(file)
shutil.copy2(orig, file)
# Fix the timestamp back to that of
# the original file. The above copy seems
# to do this for us, but I'm going to
# leave this in to make sure it always works.
tm = os.path.getmtime(orig)
os.utime(file, (tm, tm))
def setImortal(self):
self.imortal = 1
def getTimestamp(self):
return self.timestamp
def getSize(self):
return float(self.size) / (1024 * 1024)
def getUniqueName(self):
return self.filename
def getBaseName(self):
return self.filename
def getName(self):
return self.filename
def getShortName(self):
return os.path.splitext(self.filename)[0]
def getPath(self):
return self.pathname
def getFullName(self):
return str(os.path.join(self.pathname, self.filename))
def symlink(self, target, base=''):
if os.path.isfile(target) or os.path.islink(target):
os.unlink(target)
os.symlink(self.getFullName(), target)
def chmod(self, mode):
if os.path.exists(self.getFullName()):
os.chmod(self.getFullName(), mode)
def dump(self):
print('%s(%s)' % (self.filename, self.pathname))
class RPMBaseFile(File):
def __init__(self, file, timestamp=None, size=None, ext=1):
File.__init__(self, file, timestamp, size)
self.result = []
# Remove ext count extensions, the defualt is 1, but for
# rolls we remove two (.diskN.iso)
s = self.filename # name-ver-rpmver.arch.rpm
for x in range(0, ext):
i = s.rfind('.')
s = self.filename[:i]
i = s.rfind('.')
self.result.append(s[i+1:]) # get architecture string
s = self.filename[:i]
i = s.rfind('-')
self.release = s[i+1:]
self.result.append(self.versionList(s[i+1:])) # get release string
s = self.filename[:i]
i = s.rfind('-')
self.version = s[i+1:]
self.result.append(self.versionList(s[i+1:])) # get version string
self.result.append(self.filename[:i]) # get package name
self.result.reverse() # we built the list backwards
def versionList(self, s):
result = []
for e in re.split('\.+|_+', s):
num = ''
alpha = ''
l = []
for c in e:
if c in string.digits:
num = num + c
if alpha:
l.append(alpha)
alpha = ''
else:
alpha = alpha + c
if num:
l.append(int(num))
num = ''
if alpha:
l.append(alpha)
if num:
l.append(int(num))
result.append(l)
return result
def getBaseName(self):
return self.result[0]
def getUniqueName(self):
return '%s-%s' % (self.result[0], self.result[3])
class RPMFile(RPMBaseFile):
def __init__(self, file, timestamp=None, size=None):
RPMBaseFile.__init__(self, file, timestamp, size)
def __cmp__(self, file):
if self.getPackageArch() != file.getPackageArch():
rc = 0
else:
# For RPM Files, if the timestamps are within 2 minutes
# of each other check
# the Buildtime of the RPM
if abs(self.timestamp - int(file.timestamp)) < 120:
# print "CMP %s:%s" % (self.getFullName(), file.getFullName())
f1 = os.popen(f"rpm -qp --qf '%%{BUILDTIME}' %s" % self.getFullName())
self.timestamp = float(f1.readline().strip())
f1.close()
f2 = os.popen(f"rpm -qp --qf '%%{BUILDTIME}' %s" % file.getFullName())
file.timestamp = float(f2.readline().strip())
f2.close()
rc = File.__cmp__(self, file)
return rc
def getPackageName(self):
return self.getBaseName()
def getPackageVersion(self):
return self.result[1]
def getPackageRelease(self):
return self.result[2]
def getPackageVersionString(self):
return self.version
def getPackageArch(self):
return self.result[3]
def installPackage(self, root, flags=''):
'''Installs the RPM at the given root directory. This is
used for patching RPMs into the distribution and making
bootable CDs'''
pass
dbdir = os.path.join(root, 'var', 'lib', 'rpm')
if not os.path.isdir(dbdir):
os.makedirs(dbdir)
cmd = 'rpm -i --nomd5 --force --nodeps --ignorearch '
cmd += '--dbpath %s %s ' % (dbdir, flags)
cmd += '--badreloc --relocate /=%s %s' % (root, self.getFullName())
print ('cmd', cmd)
retval = os.system(cmd)
while dbdir:
if not os.listdir(dbdir):
shutil.rmtree(dbdir)
result = dbdir.split(os.sep)
dbdir = os.sep.join(result[:-1])
print ('retval', retval)
return retval
class RollFile(RPMBaseFile):
def __init__(self, file, timestamp=None, size=None):
RPMBaseFile.__init__(self, file, timestamp, size, 2)
self.diskID = int(file.split('.')[-2][4:])
def __cmp__(self, file):
if self.getRollArch() != file.getRollArch():
rc = 0
else:
rc = File.__cmp__(self, file)
return rc
def getRollDiskID(self):
return self.diskID
def getRollName(self):
return self.getBaseName()
def getRollVersion(self):
return self.result[1]
def getRollVersionString(self):
return self.version
def getRollReleaseString(self):
return self.release
def getRollArch(self):
return self.result[3]
class RollInfoFile(File,
xml.sax.handler.ContentHandler, xml.sax.handler.DTDHandler,
xml.sax.handler.EntityResolver, xml.sax.handler.ErrorHandler):
def __init__(self, file):
File.__init__(self, file)
self.attrs = {}
parser = xml.sax.make_parser()
parser.setContentHandler(self)
fin = open(file, 'r')
parser.parse(fin)
fin.close()
def startElement(self, name, attrs):
self.attrs[str(name)] = {}
for (attrName, attrVal) in attrs.items():
self.attrs[str(name)][str(attrName)] = str(attrVal)
def getXML(self):
'''Regenerate the XML file based on what was read in and
the current state.'''
xml = []
xml.append('<roll name="%s" interface="%s">' %
(self.getRollName(), self.getRollInterface()))
for tag in self.attrs.keys():
if tag == 'roll':
continue
attrs = ''
for key,val in self.attrs[tag].items():
attrs += ' %s="%s"' % (key, val)
xml.append('\t<%s%s/>' % (tag, attrs))
xml.append('</roll>')
return '\n'.join(xml)
def getRollName(self):
return self.attrs['roll']['name']
def getRollInterface(self):
return self.attrs['roll']['interface']
def getRollVersion(self):
return self.attrs['info']['version']
def getRollReleaseString(self):
return self.attrs['info']['release']
def getRollOS(self):
try:
return self.attrs['info']['os']
except:
return 'linux'
def setRollArch(self, arch):
self.attrs['info']['arch'] = arch
def getRollArch(self):
return self.attrs['info']['arch']
def getISOMaxSize(self):
return float(self.attrs['iso']['maxsize'])
def setISOMaxSize(self, maxsize):
self.attrs['iso']['maxsize'] = maxsize
def getISOFlags(self):
return self.attrs['iso']['mkisofs']
def getRollRolls(self):
return self.attrs['rpm']['rolls']
def isBootable(self):
return int(self.attrs['iso']['bootable'])
def hasRolls(self):
if self.attrs['rpm']['rolls'] != '0':
return True
else:
return False
def hasRPMS(self):
return int(self.attrs['rpm']['bin'])
def hasSRPMS(self):
return int(self.attrs['rpm']['src'])
class Tree:
def __init__(self, root):
self.root = root
self.tree = {}
self.build('')
def getRoot(self):
return self.root
def getDirs(self):
return self.tree.keys()
def clear(self, path=''):
l1 = path.split(os.sep)
for key in self.tree.keys():
l2 = key.split(os.sep)
if sunhpc.util.list_isprefix(l1, l2):
del self.tree[key]
def getFiles(self, path=''):
try:
result = self.tree[path]
except KeyError:
result = []
return result
def setFiles(self, path, files):
self.tree[path] = files
def build(self, dirs):
path = os.path.join(self.root, dirs)
if not os.path.isdir(path):
return
# Handle the case where we don't have permission to traverse
# into a tree by pruning off the protected sub-tree.
try:
files = os.listdir(path)
except:
files = []
v = []
for f in files:
filepath = os.path.join(path, f)
if os.path.isdir(filepath) and not \
os.path.islink(filepath):
self.build(os.path.join(dirs, f))
else:
if re.match('.*\.rpm$', f) != None:
v.append(RPMFile(filepath))
elif re.match('roll-.*\.iso$', f) != None:
v.append(RollFile(filepath))
else:
v.append(File(filepath))
self.tree[dirs] = v
def dumpDirNames(self):
for key in self.tree.keys():
print(key)
def dump(self):
self.apply(self.__dumpIter__)
def apply(self, func, root=None):
for key in self.tree.keys():
for e in self.tree[key]:
func(key, e, root)
def getSize(self):
'Return the size the if Tree in Mbytes'
len = 0
for key in self.tree.keys():
for file in self.tree[key]:
len = len + file.getSize()
return float(len)
def __dumpIter__(self, p, f, root):
print(p, end='')
f.dump()

98
lib/sunhpc/sunhpc/main.py Normal file
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import os
import sys
import tty
import yaml
import sunhpc
import signal
import syslog
import sunhpc.util
def _main(argv=None):
try:
database = None
except ImportError:
pass
if len(argv) == 1:
args = ['list', 'help']
else:
args = sys.argv[1:]
module = None
cmd = args[0].split()
if len(cmd) > 1:
s = 'sunhpc.commands.%s' % '.'.join(cmd)
try:
__import__(s)
module = eval(s)
i = 1
except:
module = None
if not module:
for i in range(len(args), 0, -1):
s = 'sunhpc.commands.%s' % '.'.join(args[:i])
try:
__import__(s)
module = eval(s)
if module:
break
except ImportError:
#raise
continue
if not module:
print ('error - invalid sunhpc command "%s"' % args[0])
sys.exit(-1)
name = ' '.join('.'.split(s))
try:
command = getattr(module, 'Command')(database)
except AttributeError:
import sunhpc.commands.list.help
help = sunhpc.commands.list.help.Command(database)
fullmodpath = s.split('.')
submodpath = '/'.join(fullmodpath[2:])
help.run({'subdir': submodpath}, [])
print (help.getText())
sys.exit(-1)
if command.MustBeRoot and not (
command.isRootUser() or command.isApacheUser()):
os.system('sudo %s' % ' '.join(sys.argv))
else:
try:
command.runWrapper(name, args[i:])
text = command.getText()
if len(text) > 0:
print (text, end=' ')
if text[len(text)-1] != '\n':
print ()
except sunhpc.util.CommandError as e:
print ('Error: ', e)
print (command.usage())
exit(1)
syslog.closelog()
def main(argv=None):
_main(argv)
'''
try:
return _main(argv)
except KeyboardInterrupt:
sys.stderr.write("\n")
tty.error("Keyboard interrupt.")
return signal.SIGINT.value
except SystemExit as e:
return e.code
except Exception as e:
tty.error(e)
return 3
'''

147
lib/sunhpc/sunhpc/paths.py Normal file
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# Copyright Sunhpc Project Developers. See COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
"""Defines paths that are part of Sunhpc's directory structure.
Do not import other ``sunhpc`` modules here. This module is used
throughout Sunhpc and should bring in a minimal number of external
dependencies.
"""
import os
from pathlib import PurePath, Path
#: This file lives in /opt/sunhpc/lib/sunhpc/sunhpc/paths.py
#: prefix: /opt/sunhpc
prefix = str(Path(__file__).parent.parent.parent.parent)
#: synonym for prefix
sunhpc_root = prefix
#: bin directory in the sunhpc prefix
bin_path = os.path.join(prefix, "bin")
#: The sunhpc script itself
sunhpc_script = os.path.join(bin_path, "sunhpc")
#: The sbang script in the sunhpc installation
sbang_script = os.path.join(bin_path, "sbang")
# sunhpc directory hierarchy
lib_path = os.path.join(prefix, "lib", "sunhpc")
module_path = os.path.join(lib_path, "sunhpc")
vendor_path = os.path.join(module_path, "vendor")
command_path = os.path.join(module_path, "cmd")
analyzers_path = os.path.join(module_path, "analyzers")
platform_path = os.path.join(module_path, "platforms")
compilers_path = os.path.join(module_path, "compilers")
operating_system_path = os.path.join(module_path, "operating_systems")
test_path = os.path.join(module_path, "test")
hooks_path = os.path.join(module_path, "hooks")
opt_path = os.path.join(prefix, "opt")
share_path = os.path.join(prefix, "share", "sunhpc")
etc_path = os.path.join(prefix, "etc", "sunhpc")
#
# Things in $sunhpc/etc/sunhpc
#
default_license_dir = os.path.join(etc_path, "licenses")
#
# Things in $sunhpc/var/sunhpc
#
var_path = os.path.join(prefix, "var", "sunhpc")
# read-only things in $sunhpc/var/sunhpc
repos_path = os.path.join(var_path, "repos")
test_repos_path = os.path.join(var_path, "test_repos")
mock_packages_path = os.path.join(test_repos_path, "sunhpc_repo", "builtin_mock")
#
# Writable things in $sunhpc/var/sunhpc
# TODO: Deprecate these, as we want a read-only sunhpc prefix by default.
# TODO: These should probably move to user cache, or some other location.
#
# fetch cache for downloaded files
default_fetch_cache_path = os.path.join(var_path, "cache")
# GPG paths.
gpg_keys_path = os.path.join(var_path, "gpg")
mock_gpg_data_path = os.path.join(var_path, "gpg.mock", "data")
mock_gpg_keys_path = os.path.join(var_path, "gpg.mock", "keys")
gpg_path = os.path.join(opt_path, "sunhpc", "gpg")
# Below paths are where Sunhpc can write information for the user.
# Some are caches, some are not exactly caches.
#
# The options that start with `default_` below are overridable in
# `config.yaml`, but they default to use `user_cache_path/<location>`.
#
# You can override the top-level directory (the user cache path) by
# setting `SUNHPC_USER_CACHE_PATH`. Otherwise it defaults to ~/.sunhpc.
#
def _get_user_cache_path():
return os.path.expanduser(os.getenv("SUNHPC_USER_CACHE_PATH") or "~%s.sunhpc" % os.sep)
user_cache_path = str(PurePath(_get_user_cache_path()))
#: junit, cdash, etc. reports about builds
reports_path = os.path.join(user_cache_path, "reports")
#: installation test (sunhpc test) output
default_test_path = os.path.join(user_cache_path, "test")
#: sunhpc monitor analysis directories
default_monitor_path = os.path.join(reports_path, "monitor")
#: git repositories fetched to compare commits to versions
user_repos_cache_path = os.path.join(user_cache_path, "git_repos")
#: default location where remote package repositories are cloned
package_repos_path = os.path.join(user_cache_path, "package_repos")
#: bootstrap store for bootstrapping clingo and other tools
default_user_bootstrap_path = os.path.join(user_cache_path, "bootstrap")
# Below paths pull configuration from the host environment.
#
# There are three environment variables you can use to isolate sunhpc from
# the host environment:
# - `SUNHPC_USER_CONFIG_PATH`: override `~/.sunhpc` location (for config and caches)
# - `SUNHPC_SYSTEM_CONFIG_PATH`: override `/etc/sunhpc` configuration scope.
# - `SUNHPC_DISABLE_LOCAL_CONFIG`: disable both of these locations.
# User configuration and caches in $HOME/.sunhpc
def _get_user_config_path():
return os.path.expanduser(os.getenv("SUNHPC_USER_CONFIG_PATH") or "~%s.sunhpc" % os.sep)
# Configuration in /etc/sunhpc on the system
def _get_system_config_path():
return os.path.expanduser(
os.getenv("SUNHPC_SYSTEM_CONFIG_PATH") or os.sep + os.path.join("etc", "sunhpc")
)
#: User configuration location
user_config_path = _get_user_config_path()
#: System configuration location
system_config_path = _get_system_config_path()
#: Recorded directory where sunhpc command was originally invoked
sunhpc_working_dir = None
def set_working_dir():
"""Change the working directory to getcwd, or sunhpc prefix if no cwd."""
global sunhpc_working_dir
try:
sunhpc_working_dir = os.getcwd()
except OSError:
os.chdir(prefix)
sunhpc_working_dir = prefix

183
lib/sunhpc/sunhpc/util.py Normal file
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import os
import sys
import xml.sax
import subprocess
from xml.sax import handler
class SunhpcException(Exception):
'Base class for Sunhpc exceptions.'
pass
class HostnotfoundException(SunhpcException):
'Host not found exception.'
pass
class ParameterNotValid(SunhpcException):
'Parameter not valid exception.'
pass
class CommandError(SunhpcException):
'Command error exception.'
pass
# An exception for Kickstart builder trinity: kcgi, kgen, kp perrors.
class KickstartError(SunhpcException):
pass
class KickstartGraphError(KickstartError):
pass
class KickstartNodeError(KickstartError):
pass
class Struct:
pass
def escapeAttr(value):
if value is None:
return value
return xml.sax.saxutils.escape(value, {
"\"": "&quot;",
"%": "&#x0025i;",
"'": "\\'"
})
def unescapeAttr(value):
if value is None:
return value
return xml.sax.saxutils.unescape(value, {
"&quot;": "\"",
"&#x0025;": "%"
})
def escapeStringForShell(value):
return value.replace('\"', '\\\"')
def str2bool(s):
if s and s.upper() in [ 'ON', 'YES', 'Y', 'TRUE', '1', 'ENABLE', 'ENABLED']:
return True
else:
return False
def bool2str(b):
if b:
return 'yes'
else:
return 'no'
def list2str(l):
s = ''
for e in l:
s = s + e
return s
def listcmp(l1, l2):
return map(lambda x, y: x == y, l1, l2)
def listdup(e, n):
l = []
for i in range(0, n):
l.append(e)
return l
def list_isprefix(l1, l2):
l = listcmp(l1, l2)
if all(l):
return True
else:
return False
def list_issuffix(l1, l2):
l = listcmp(l1, l2)
for i in range(0, len(l)):
if not l[i]:
return False
return True
def getNativeArch():
arch = os.uname()[4]
if arch in [ 'i386', 'i686']:
return 'i386'
return arch
def mkdir(newdir):
if os.path.isdir(newdir):
pass
elif os.path.isfile(newdir):
raise OSError("a file with the same name as the desired dir '%s', already exists." % newdir)
else:
head, tail = os.path.split(newdir)
if head and not os.path.isdir(head):
mkdir(head)
if tail:
os.mkdir(newdir)
class ParseXML(
handler.ContentHandler, handler.DTDHandler,
handler.EntityResolver, handler.ErrorHandler):
'''A helper class to for XML parsers. Uses our
startElement_name style.
'''
def __init__(self, app=None):
handler.ContentHandler.__init__(self)
self.app = app
self.text = ''
def startElement(self, name, attrs):
try:
f = getattr(self, "startElement_" + name)
f(name, attrs)
except AttributeError:
return
def endElement(self, name):
try:
f = getattr(self, "endElement_" + name)
f(name)
except AttributeError:
return
def characters(self, content: str) -> None:
self.text += content
def system(cmd, type='standard'):
if type == 'spinner':
return startSpinner(cmd)
else:
return subprocess.call(cmd, shell=True)
def startSpinner(cmd):
p = subprocess.Popen(cmd, shell=True,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
close_fds=True)
w, r, e = (p.stdin, p.stdout, p.stderr)
currLength = 0
prevLength = 0
spinChars = '|/-\\'
spinIndex = 0
while True:
line = e.readline()
if not line:
break
if isinstance(line, bytes):
line = line.decode('utf-8', errors='replace')
if len(line) > 79:
data = line[0:78]
else:
data = line[:-1]
currLength = len(data)
pad = ''
for i in range(0, prevLength - currLength):
pad = pad + ' '
spin = spinChars[spinIndex % len(spinChars)]
spinIndex = spinIndex + 1
print (spin + data + pad + '\r', end='', flush=True)
prevLength = currLength
w.close()
r.close()
e.close()
pad = ''
for i in range(0, 78):
pad = pad + ' '
print ('\r%s\r' % pad, end='', flush=True)

390
lib/sunhpc/yaml/__init__.py Normal file
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from .error import *
from .tokens import *
from .events import *
from .nodes import *
from .loader import *
from .dumper import *
__version__ = '6.0.3'
try:
from .cyaml import *
__with_libyaml__ = True
except ImportError:
__with_libyaml__ = False
import io
#------------------------------------------------------------------------------
# XXX "Warnings control" is now deprecated. Leaving in the API function to not
# break code that uses it.
#------------------------------------------------------------------------------
def warnings(settings=None):
if settings is None:
return {}
#------------------------------------------------------------------------------
def scan(stream, Loader=Loader):
"""
Scan a YAML stream and produce scanning tokens.
"""
loader = Loader(stream)
try:
while loader.check_token():
yield loader.get_token()
finally:
loader.dispose()
def parse(stream, Loader=Loader):
"""
Parse a YAML stream and produce parsing events.
"""
loader = Loader(stream)
try:
while loader.check_event():
yield loader.get_event()
finally:
loader.dispose()
def compose(stream, Loader=Loader):
"""
Parse the first YAML document in a stream
and produce the corresponding representation tree.
"""
loader = Loader(stream)
try:
return loader.get_single_node()
finally:
loader.dispose()
def compose_all(stream, Loader=Loader):
"""
Parse all YAML documents in a stream
and produce corresponding representation trees.
"""
loader = Loader(stream)
try:
while loader.check_node():
yield loader.get_node()
finally:
loader.dispose()
def load(stream, Loader):
"""
Parse the first YAML document in a stream
and produce the corresponding Python object.
"""
loader = Loader(stream)
try:
return loader.get_single_data()
finally:
loader.dispose()
def load_all(stream, Loader):
"""
Parse all YAML documents in a stream
and produce corresponding Python objects.
"""
loader = Loader(stream)
try:
while loader.check_data():
yield loader.get_data()
finally:
loader.dispose()
def full_load(stream):
"""
Parse the first YAML document in a stream
and produce the corresponding Python object.
Resolve all tags except those known to be
unsafe on untrusted input.
"""
return load(stream, FullLoader)
def full_load_all(stream):
"""
Parse all YAML documents in a stream
and produce corresponding Python objects.
Resolve all tags except those known to be
unsafe on untrusted input.
"""
return load_all(stream, FullLoader)
def safe_load(stream):
"""
Parse the first YAML document in a stream
and produce the corresponding Python object.
Resolve only basic YAML tags. This is known
to be safe for untrusted input.
"""
return load(stream, SafeLoader)
def safe_load_all(stream):
"""
Parse all YAML documents in a stream
and produce corresponding Python objects.
Resolve only basic YAML tags. This is known
to be safe for untrusted input.
"""
return load_all(stream, SafeLoader)
def unsafe_load(stream):
"""
Parse the first YAML document in a stream
and produce the corresponding Python object.
Resolve all tags, even those known to be
unsafe on untrusted input.
"""
return load(stream, UnsafeLoader)
def unsafe_load_all(stream):
"""
Parse all YAML documents in a stream
and produce corresponding Python objects.
Resolve all tags, even those known to be
unsafe on untrusted input.
"""
return load_all(stream, UnsafeLoader)
def emit(events, stream=None, Dumper=Dumper,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None):
"""
Emit YAML parsing events into a stream.
If stream is None, return the produced string instead.
"""
getvalue = None
if stream is None:
stream = io.StringIO()
getvalue = stream.getvalue
dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
allow_unicode=allow_unicode, line_break=line_break)
try:
for event in events:
dumper.emit(event)
finally:
dumper.dispose()
if getvalue:
return getvalue()
def serialize_all(nodes, stream=None, Dumper=Dumper,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None):
"""
Serialize a sequence of representation trees into a YAML stream.
If stream is None, return the produced string instead.
"""
getvalue = None
if stream is None:
if encoding is None:
stream = io.StringIO()
else:
stream = io.BytesIO()
getvalue = stream.getvalue
dumper = Dumper(stream, canonical=canonical, indent=indent, width=width,
allow_unicode=allow_unicode, line_break=line_break,
encoding=encoding, version=version, tags=tags,
explicit_start=explicit_start, explicit_end=explicit_end)
try:
dumper.open()
for node in nodes:
dumper.serialize(node)
dumper.close()
finally:
dumper.dispose()
if getvalue:
return getvalue()
def serialize(node, stream=None, Dumper=Dumper, **kwds):
"""
Serialize a representation tree into a YAML stream.
If stream is None, return the produced string instead.
"""
return serialize_all([node], stream, Dumper=Dumper, **kwds)
def dump_all(documents, stream=None, Dumper=Dumper,
default_style=None, default_flow_style=False,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None, sort_keys=True):
"""
Serialize a sequence of Python objects into a YAML stream.
If stream is None, return the produced string instead.
"""
getvalue = None
if stream is None:
if encoding is None:
stream = io.StringIO()
else:
stream = io.BytesIO()
getvalue = stream.getvalue
dumper = Dumper(stream, default_style=default_style,
default_flow_style=default_flow_style,
canonical=canonical, indent=indent, width=width,
allow_unicode=allow_unicode, line_break=line_break,
encoding=encoding, version=version, tags=tags,
explicit_start=explicit_start, explicit_end=explicit_end, sort_keys=sort_keys)
try:
dumper.open()
for data in documents:
dumper.represent(data)
dumper.close()
finally:
dumper.dispose()
if getvalue:
return getvalue()
def dump(data, stream=None, Dumper=Dumper, **kwds):
"""
Serialize a Python object into a YAML stream.
If stream is None, return the produced string instead.
"""
return dump_all([data], stream, Dumper=Dumper, **kwds)
def safe_dump_all(documents, stream=None, **kwds):
"""
Serialize a sequence of Python objects into a YAML stream.
Produce only basic YAML tags.
If stream is None, return the produced string instead.
"""
return dump_all(documents, stream, Dumper=SafeDumper, **kwds)
def safe_dump(data, stream=None, **kwds):
"""
Serialize a Python object into a YAML stream.
Produce only basic YAML tags.
If stream is None, return the produced string instead.
"""
return dump_all([data], stream, Dumper=SafeDumper, **kwds)
def add_implicit_resolver(tag, regexp, first=None,
Loader=None, Dumper=Dumper):
"""
Add an implicit scalar detector.
If an implicit scalar value matches the given regexp,
the corresponding tag is assigned to the scalar.
first is a sequence of possible initial characters or None.
"""
if Loader is None:
loader.Loader.add_implicit_resolver(tag, regexp, first)
loader.FullLoader.add_implicit_resolver(tag, regexp, first)
loader.UnsafeLoader.add_implicit_resolver(tag, regexp, first)
else:
Loader.add_implicit_resolver(tag, regexp, first)
Dumper.add_implicit_resolver(tag, regexp, first)
def add_path_resolver(tag, path, kind=None, Loader=None, Dumper=Dumper):
"""
Add a path based resolver for the given tag.
A path is a list of keys that forms a path
to a node in the representation tree.
Keys can be string values, integers, or None.
"""
if Loader is None:
loader.Loader.add_path_resolver(tag, path, kind)
loader.FullLoader.add_path_resolver(tag, path, kind)
loader.UnsafeLoader.add_path_resolver(tag, path, kind)
else:
Loader.add_path_resolver(tag, path, kind)
Dumper.add_path_resolver(tag, path, kind)
def add_constructor(tag, constructor, Loader=None):
"""
Add a constructor for the given tag.
Constructor is a function that accepts a Loader instance
and a node object and produces the corresponding Python object.
"""
if Loader is None:
loader.Loader.add_constructor(tag, constructor)
loader.FullLoader.add_constructor(tag, constructor)
loader.UnsafeLoader.add_constructor(tag, constructor)
else:
Loader.add_constructor(tag, constructor)
def add_multi_constructor(tag_prefix, multi_constructor, Loader=None):
"""
Add a multi-constructor for the given tag prefix.
Multi-constructor is called for a node if its tag starts with tag_prefix.
Multi-constructor accepts a Loader instance, a tag suffix,
and a node object and produces the corresponding Python object.
"""
if Loader is None:
loader.Loader.add_multi_constructor(tag_prefix, multi_constructor)
loader.FullLoader.add_multi_constructor(tag_prefix, multi_constructor)
loader.UnsafeLoader.add_multi_constructor(tag_prefix, multi_constructor)
else:
Loader.add_multi_constructor(tag_prefix, multi_constructor)
def add_representer(data_type, representer, Dumper=Dumper):
"""
Add a representer for the given type.
Representer is a function accepting a Dumper instance
and an instance of the given data type
and producing the corresponding representation node.
"""
Dumper.add_representer(data_type, representer)
def add_multi_representer(data_type, multi_representer, Dumper=Dumper):
"""
Add a representer for the given type.
Multi-representer is a function accepting a Dumper instance
and an instance of the given data type or subtype
and producing the corresponding representation node.
"""
Dumper.add_multi_representer(data_type, multi_representer)
class YAMLObjectMetaclass(type):
"""
The metaclass for YAMLObject.
"""
def __init__(cls, name, bases, kwds):
super(YAMLObjectMetaclass, cls).__init__(name, bases, kwds)
if 'yaml_tag' in kwds and kwds['yaml_tag'] is not None:
if isinstance(cls.yaml_loader, list):
for loader in cls.yaml_loader:
loader.add_constructor(cls.yaml_tag, cls.from_yaml)
else:
cls.yaml_loader.add_constructor(cls.yaml_tag, cls.from_yaml)
cls.yaml_dumper.add_representer(cls, cls.to_yaml)
class YAMLObject(metaclass=YAMLObjectMetaclass):
"""
An object that can dump itself to a YAML stream
and load itself from a YAML stream.
"""
__slots__ = () # no direct instantiation, so allow immutable subclasses
yaml_loader = [Loader, FullLoader, UnsafeLoader]
yaml_dumper = Dumper
yaml_tag = None
yaml_flow_style = None
@classmethod
def from_yaml(cls, loader, node):
"""
Convert a representation node to a Python object.
"""
return loader.construct_yaml_object(node, cls)
@classmethod
def to_yaml(cls, dumper, data):
"""
Convert a Python object to a representation node.
"""
return dumper.represent_yaml_object(cls.yaml_tag, data, cls,
flow_style=cls.yaml_flow_style)

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lib/sunhpc/yaml/composer.py Normal file
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__all__ = ['Composer', 'ComposerError']
from .error import MarkedYAMLError
from .events import *
from .nodes import *
class ComposerError(MarkedYAMLError):
pass
class Composer:
def __init__(self):
self.anchors = {}
def check_node(self):
# Drop the STREAM-START event.
if self.check_event(StreamStartEvent):
self.get_event()
# If there are more documents available?
return not self.check_event(StreamEndEvent)
def get_node(self):
# Get the root node of the next document.
if not self.check_event(StreamEndEvent):
return self.compose_document()
def get_single_node(self):
# Drop the STREAM-START event.
self.get_event()
# Compose a document if the stream is not empty.
document = None
if not self.check_event(StreamEndEvent):
document = self.compose_document()
# Ensure that the stream contains no more documents.
if not self.check_event(StreamEndEvent):
event = self.get_event()
raise ComposerError("expected a single document in the stream",
document.start_mark, "but found another document",
event.start_mark)
# Drop the STREAM-END event.
self.get_event()
return document
def compose_document(self):
# Drop the DOCUMENT-START event.
self.get_event()
# Compose the root node.
node = self.compose_node(None, None)
# Drop the DOCUMENT-END event.
self.get_event()
self.anchors = {}
return node
def compose_node(self, parent, index):
if self.check_event(AliasEvent):
event = self.get_event()
anchor = event.anchor
if anchor not in self.anchors:
raise ComposerError(None, None, "found undefined alias %r"
% anchor, event.start_mark)
return self.anchors[anchor]
event = self.peek_event()
anchor = event.anchor
if anchor is not None:
if anchor in self.anchors:
raise ComposerError("found duplicate anchor %r; first occurrence"
% anchor, self.anchors[anchor].start_mark,
"second occurrence", event.start_mark)
self.descend_resolver(parent, index)
if self.check_event(ScalarEvent):
node = self.compose_scalar_node(anchor)
elif self.check_event(SequenceStartEvent):
node = self.compose_sequence_node(anchor)
elif self.check_event(MappingStartEvent):
node = self.compose_mapping_node(anchor)
self.ascend_resolver()
return node
def compose_scalar_node(self, anchor):
event = self.get_event()
tag = event.tag
if tag is None or tag == '!':
tag = self.resolve(ScalarNode, event.value, event.implicit)
node = ScalarNode(tag, event.value,
event.start_mark, event.end_mark, style=event.style)
if anchor is not None:
self.anchors[anchor] = node
return node
def compose_sequence_node(self, anchor):
start_event = self.get_event()
tag = start_event.tag
if tag is None or tag == '!':
tag = self.resolve(SequenceNode, None, start_event.implicit)
node = SequenceNode(tag, [],
start_event.start_mark, None,
flow_style=start_event.flow_style)
if anchor is not None:
self.anchors[anchor] = node
index = 0
while not self.check_event(SequenceEndEvent):
node.value.append(self.compose_node(node, index))
index += 1
end_event = self.get_event()
node.end_mark = end_event.end_mark
return node
def compose_mapping_node(self, anchor):
start_event = self.get_event()
tag = start_event.tag
if tag is None or tag == '!':
tag = self.resolve(MappingNode, None, start_event.implicit)
node = MappingNode(tag, [],
start_event.start_mark, None,
flow_style=start_event.flow_style)
if anchor is not None:
self.anchors[anchor] = node
while not self.check_event(MappingEndEvent):
#key_event = self.peek_event()
item_key = self.compose_node(node, None)
#if item_key in node.value:
# raise ComposerError("while composing a mapping", start_event.start_mark,
# "found duplicate key", key_event.start_mark)
item_value = self.compose_node(node, item_key)
#node.value[item_key] = item_value
node.value.append((item_key, item_value))
end_event = self.get_event()
node.end_mark = end_event.end_mark
return node

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__all__ = [
'BaseConstructor',
'SafeConstructor',
'FullConstructor',
'UnsafeConstructor',
'Constructor',
'ConstructorError'
]
from .error import *
from .nodes import *
import collections.abc, datetime, base64, binascii, re, sys, types
class ConstructorError(MarkedYAMLError):
pass
class BaseConstructor:
yaml_constructors = {}
yaml_multi_constructors = {}
def __init__(self):
self.constructed_objects = {}
self.recursive_objects = {}
self.state_generators = []
self.deep_construct = False
def check_data(self):
# If there are more documents available?
return self.check_node()
def check_state_key(self, key):
"""Block special attributes/methods from being set in a newly created
object, to prevent user-controlled methods from being called during
deserialization"""
if self.get_state_keys_blacklist_regexp().match(key):
raise ConstructorError(None, None,
"blacklisted key '%s' in instance state found" % (key,), None)
def get_data(self):
# Construct and return the next document.
if self.check_node():
return self.construct_document(self.get_node())
def get_single_data(self):
# Ensure that the stream contains a single document and construct it.
node = self.get_single_node()
if node is not None:
return self.construct_document(node)
return None
def construct_document(self, node):
data = self.construct_object(node)
while self.state_generators:
state_generators = self.state_generators
self.state_generators = []
for generator in state_generators:
for dummy in generator:
pass
self.constructed_objects = {}
self.recursive_objects = {}
self.deep_construct = False
return data
def construct_object(self, node, deep=False):
if node in self.constructed_objects:
return self.constructed_objects[node]
if deep:
old_deep = self.deep_construct
self.deep_construct = True
if node in self.recursive_objects:
raise ConstructorError(None, None,
"found unconstructable recursive node", node.start_mark)
self.recursive_objects[node] = None
constructor = None
tag_suffix = None
if node.tag in self.yaml_constructors:
constructor = self.yaml_constructors[node.tag]
else:
for tag_prefix in self.yaml_multi_constructors:
if tag_prefix is not None and node.tag.startswith(tag_prefix):
tag_suffix = node.tag[len(tag_prefix):]
constructor = self.yaml_multi_constructors[tag_prefix]
break
else:
if None in self.yaml_multi_constructors:
tag_suffix = node.tag
constructor = self.yaml_multi_constructors[None]
elif None in self.yaml_constructors:
constructor = self.yaml_constructors[None]
elif isinstance(node, ScalarNode):
constructor = self.__class__.construct_scalar
elif isinstance(node, SequenceNode):
constructor = self.__class__.construct_sequence
elif isinstance(node, MappingNode):
constructor = self.__class__.construct_mapping
if tag_suffix is None:
data = constructor(self, node)
else:
data = constructor(self, tag_suffix, node)
if isinstance(data, types.GeneratorType):
generator = data
data = next(generator)
if self.deep_construct:
for dummy in generator:
pass
else:
self.state_generators.append(generator)
self.constructed_objects[node] = data
del self.recursive_objects[node]
if deep:
self.deep_construct = old_deep
return data
def construct_scalar(self, node):
if not isinstance(node, ScalarNode):
raise ConstructorError(None, None,
"expected a scalar node, but found %s" % node.id,
node.start_mark)
return node.value
def construct_sequence(self, node, deep=False):
if not isinstance(node, SequenceNode):
raise ConstructorError(None, None,
"expected a sequence node, but found %s" % node.id,
node.start_mark)
return [self.construct_object(child, deep=deep)
for child in node.value]
def construct_mapping(self, node, deep=False):
if not isinstance(node, MappingNode):
raise ConstructorError(None, None,
"expected a mapping node, but found %s" % node.id,
node.start_mark)
mapping = {}
for key_node, value_node in node.value:
key = self.construct_object(key_node, deep=deep)
if not isinstance(key, collections.abc.Hashable):
raise ConstructorError("while constructing a mapping", node.start_mark,
"found unhashable key", key_node.start_mark)
value = self.construct_object(value_node, deep=deep)
mapping[key] = value
return mapping
def construct_pairs(self, node, deep=False):
if not isinstance(node, MappingNode):
raise ConstructorError(None, None,
"expected a mapping node, but found %s" % node.id,
node.start_mark)
pairs = []
for key_node, value_node in node.value:
key = self.construct_object(key_node, deep=deep)
value = self.construct_object(value_node, deep=deep)
pairs.append((key, value))
return pairs
@classmethod
def add_constructor(cls, tag, constructor):
if not 'yaml_constructors' in cls.__dict__:
cls.yaml_constructors = cls.yaml_constructors.copy()
cls.yaml_constructors[tag] = constructor
@classmethod
def add_multi_constructor(cls, tag_prefix, multi_constructor):
if not 'yaml_multi_constructors' in cls.__dict__:
cls.yaml_multi_constructors = cls.yaml_multi_constructors.copy()
cls.yaml_multi_constructors[tag_prefix] = multi_constructor
class SafeConstructor(BaseConstructor):
def construct_scalar(self, node):
if isinstance(node, MappingNode):
for key_node, value_node in node.value:
if key_node.tag == 'tag:yaml.org,2002:value':
return self.construct_scalar(value_node)
return super().construct_scalar(node)
def flatten_mapping(self, node):
merge = []
index = 0
while index < len(node.value):
key_node, value_node = node.value[index]
if key_node.tag == 'tag:yaml.org,2002:merge':
del node.value[index]
if isinstance(value_node, MappingNode):
self.flatten_mapping(value_node)
merge.extend(value_node.value)
elif isinstance(value_node, SequenceNode):
submerge = []
for subnode in value_node.value:
if not isinstance(subnode, MappingNode):
raise ConstructorError("while constructing a mapping",
node.start_mark,
"expected a mapping for merging, but found %s"
% subnode.id, subnode.start_mark)
self.flatten_mapping(subnode)
submerge.append(subnode.value)
submerge.reverse()
for value in submerge:
merge.extend(value)
else:
raise ConstructorError("while constructing a mapping", node.start_mark,
"expected a mapping or list of mappings for merging, but found %s"
% value_node.id, value_node.start_mark)
elif key_node.tag == 'tag:yaml.org,2002:value':
key_node.tag = 'tag:yaml.org,2002:str'
index += 1
else:
index += 1
if merge:
node.value = merge + node.value
def construct_mapping(self, node, deep=False):
if isinstance(node, MappingNode):
self.flatten_mapping(node)
return super().construct_mapping(node, deep=deep)
def construct_yaml_null(self, node):
self.construct_scalar(node)
return None
bool_values = {
'yes': True,
'no': False,
'true': True,
'false': False,
'on': True,
'off': False,
}
def construct_yaml_bool(self, node):
value = self.construct_scalar(node)
return self.bool_values[value.lower()]
def construct_yaml_int(self, node):
value = self.construct_scalar(node)
value = value.replace('_', '')
sign = +1
if value[0] == '-':
sign = -1
if value[0] in '+-':
value = value[1:]
if value == '0':
return 0
elif value.startswith('0b'):
return sign*int(value[2:], 2)
elif value.startswith('0x'):
return sign*int(value[2:], 16)
elif value[0] == '0':
return sign*int(value, 8)
elif ':' in value:
digits = [int(part) for part in value.split(':')]
digits.reverse()
base = 1
value = 0
for digit in digits:
value += digit*base
base *= 60
return sign*value
else:
return sign*int(value)
inf_value = 1e300
while inf_value != inf_value*inf_value:
inf_value *= inf_value
nan_value = -inf_value/inf_value # Trying to make a quiet NaN (like C99).
def construct_yaml_float(self, node):
value = self.construct_scalar(node)
value = value.replace('_', '').lower()
sign = +1
if value[0] == '-':
sign = -1
if value[0] in '+-':
value = value[1:]
if value == '.inf':
return sign*self.inf_value
elif value == '.nan':
return self.nan_value
elif ':' in value:
digits = [float(part) for part in value.split(':')]
digits.reverse()
base = 1
value = 0.0
for digit in digits:
value += digit*base
base *= 60
return sign*value
else:
return sign*float(value)
def construct_yaml_binary(self, node):
try:
value = self.construct_scalar(node).encode('ascii')
except UnicodeEncodeError as exc:
raise ConstructorError(None, None,
"failed to convert base64 data into ascii: %s" % exc,
node.start_mark)
try:
if hasattr(base64, 'decodebytes'):
return base64.decodebytes(value)
else:
return base64.decodestring(value)
except binascii.Error as exc:
raise ConstructorError(None, None,
"failed to decode base64 data: %s" % exc, node.start_mark)
timestamp_regexp = re.compile(
r'''^(?P<year>[0-9][0-9][0-9][0-9])
-(?P<month>[0-9][0-9]?)
-(?P<day>[0-9][0-9]?)
(?:(?:[Tt]|[ \t]+)
(?P<hour>[0-9][0-9]?)
:(?P<minute>[0-9][0-9])
:(?P<second>[0-9][0-9])
(?:\.(?P<fraction>[0-9]*))?
(?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
(?::(?P<tz_minute>[0-9][0-9]))?))?)?$''', re.X)
def construct_yaml_timestamp(self, node):
value = self.construct_scalar(node)
match = self.timestamp_regexp.match(node.value)
values = match.groupdict()
year = int(values['year'])
month = int(values['month'])
day = int(values['day'])
if not values['hour']:
return datetime.date(year, month, day)
hour = int(values['hour'])
minute = int(values['minute'])
second = int(values['second'])
fraction = 0
tzinfo = None
if values['fraction']:
fraction = values['fraction'][:6]
while len(fraction) < 6:
fraction += '0'
fraction = int(fraction)
if values['tz_sign']:
tz_hour = int(values['tz_hour'])
tz_minute = int(values['tz_minute'] or 0)
delta = datetime.timedelta(hours=tz_hour, minutes=tz_minute)
if values['tz_sign'] == '-':
delta = -delta
tzinfo = datetime.timezone(delta)
elif values['tz']:
tzinfo = datetime.timezone.utc
return datetime.datetime(year, month, day, hour, minute, second, fraction,
tzinfo=tzinfo)
def construct_yaml_omap(self, node):
# Note: we do not check for duplicate keys, because it's too
# CPU-expensive.
omap = []
yield omap
if not isinstance(node, SequenceNode):
raise ConstructorError("while constructing an ordered map", node.start_mark,
"expected a sequence, but found %s" % node.id, node.start_mark)
for subnode in node.value:
if not isinstance(subnode, MappingNode):
raise ConstructorError("while constructing an ordered map", node.start_mark,
"expected a mapping of length 1, but found %s" % subnode.id,
subnode.start_mark)
if len(subnode.value) != 1:
raise ConstructorError("while constructing an ordered map", node.start_mark,
"expected a single mapping item, but found %d items" % len(subnode.value),
subnode.start_mark)
key_node, value_node = subnode.value[0]
key = self.construct_object(key_node)
value = self.construct_object(value_node)
omap.append((key, value))
def construct_yaml_pairs(self, node):
# Note: the same code as `construct_yaml_omap`.
pairs = []
yield pairs
if not isinstance(node, SequenceNode):
raise ConstructorError("while constructing pairs", node.start_mark,
"expected a sequence, but found %s" % node.id, node.start_mark)
for subnode in node.value:
if not isinstance(subnode, MappingNode):
raise ConstructorError("while constructing pairs", node.start_mark,
"expected a mapping of length 1, but found %s" % subnode.id,
subnode.start_mark)
if len(subnode.value) != 1:
raise ConstructorError("while constructing pairs", node.start_mark,
"expected a single mapping item, but found %d items" % len(subnode.value),
subnode.start_mark)
key_node, value_node = subnode.value[0]
key = self.construct_object(key_node)
value = self.construct_object(value_node)
pairs.append((key, value))
def construct_yaml_set(self, node):
data = set()
yield data
value = self.construct_mapping(node)
data.update(value)
def construct_yaml_str(self, node):
return self.construct_scalar(node)
def construct_yaml_seq(self, node):
data = []
yield data
data.extend(self.construct_sequence(node))
def construct_yaml_map(self, node):
data = {}
yield data
value = self.construct_mapping(node)
data.update(value)
def construct_yaml_object(self, node, cls):
data = cls.__new__(cls)
yield data
if hasattr(data, '__setstate__'):
state = self.construct_mapping(node, deep=True)
data.__setstate__(state)
else:
state = self.construct_mapping(node)
data.__dict__.update(state)
def construct_undefined(self, node):
raise ConstructorError(None, None,
"could not determine a constructor for the tag %r" % node.tag,
node.start_mark)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:null',
SafeConstructor.construct_yaml_null)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:bool',
SafeConstructor.construct_yaml_bool)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:int',
SafeConstructor.construct_yaml_int)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:float',
SafeConstructor.construct_yaml_float)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:binary',
SafeConstructor.construct_yaml_binary)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:timestamp',
SafeConstructor.construct_yaml_timestamp)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:omap',
SafeConstructor.construct_yaml_omap)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:pairs',
SafeConstructor.construct_yaml_pairs)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:set',
SafeConstructor.construct_yaml_set)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:str',
SafeConstructor.construct_yaml_str)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:seq',
SafeConstructor.construct_yaml_seq)
SafeConstructor.add_constructor(
'tag:yaml.org,2002:map',
SafeConstructor.construct_yaml_map)
SafeConstructor.add_constructor(None,
SafeConstructor.construct_undefined)
class FullConstructor(SafeConstructor):
# 'extend' is blacklisted because it is used by
# construct_python_object_apply to add `listitems` to a newly generate
# python instance
def get_state_keys_blacklist(self):
return ['^extend$', '^__.*__$']
def get_state_keys_blacklist_regexp(self):
if not hasattr(self, 'state_keys_blacklist_regexp'):
self.state_keys_blacklist_regexp = re.compile('(' + '|'.join(self.get_state_keys_blacklist()) + ')')
return self.state_keys_blacklist_regexp
def construct_python_str(self, node):
return self.construct_scalar(node)
def construct_python_unicode(self, node):
return self.construct_scalar(node)
def construct_python_bytes(self, node):
try:
value = self.construct_scalar(node).encode('ascii')
except UnicodeEncodeError as exc:
raise ConstructorError(None, None,
"failed to convert base64 data into ascii: %s" % exc,
node.start_mark)
try:
if hasattr(base64, 'decodebytes'):
return base64.decodebytes(value)
else:
return base64.decodestring(value)
except binascii.Error as exc:
raise ConstructorError(None, None,
"failed to decode base64 data: %s" % exc, node.start_mark)
def construct_python_long(self, node):
return self.construct_yaml_int(node)
def construct_python_complex(self, node):
return complex(self.construct_scalar(node))
def construct_python_tuple(self, node):
return tuple(self.construct_sequence(node))
def find_python_module(self, name, mark, unsafe=False):
if not name:
raise ConstructorError("while constructing a Python module", mark,
"expected non-empty name appended to the tag", mark)
if unsafe:
try:
__import__(name)
except ImportError as exc:
raise ConstructorError("while constructing a Python module", mark,
"cannot find module %r (%s)" % (name, exc), mark)
if name not in sys.modules:
raise ConstructorError("while constructing a Python module", mark,
"module %r is not imported" % name, mark)
return sys.modules[name]
def find_python_name(self, name, mark, unsafe=False):
if not name:
raise ConstructorError("while constructing a Python object", mark,
"expected non-empty name appended to the tag", mark)
if '.' in name:
module_name, object_name = name.rsplit('.', 1)
else:
module_name = 'builtins'
object_name = name
if unsafe:
try:
__import__(module_name)
except ImportError as exc:
raise ConstructorError("while constructing a Python object", mark,
"cannot find module %r (%s)" % (module_name, exc), mark)
if module_name not in sys.modules:
raise ConstructorError("while constructing a Python object", mark,
"module %r is not imported" % module_name, mark)
module = sys.modules[module_name]
if not hasattr(module, object_name):
raise ConstructorError("while constructing a Python object", mark,
"cannot find %r in the module %r"
% (object_name, module.__name__), mark)
return getattr(module, object_name)
def construct_python_name(self, suffix, node):
value = self.construct_scalar(node)
if value:
raise ConstructorError("while constructing a Python name", node.start_mark,
"expected the empty value, but found %r" % value, node.start_mark)
return self.find_python_name(suffix, node.start_mark)
def construct_python_module(self, suffix, node):
value = self.construct_scalar(node)
if value:
raise ConstructorError("while constructing a Python module", node.start_mark,
"expected the empty value, but found %r" % value, node.start_mark)
return self.find_python_module(suffix, node.start_mark)
def make_python_instance(self, suffix, node,
args=None, kwds=None, newobj=False, unsafe=False):
if not args:
args = []
if not kwds:
kwds = {}
cls = self.find_python_name(suffix, node.start_mark)
if not (unsafe or isinstance(cls, type)):
raise ConstructorError("while constructing a Python instance", node.start_mark,
"expected a class, but found %r" % type(cls),
node.start_mark)
if newobj and isinstance(cls, type):
return cls.__new__(cls, *args, **kwds)
else:
return cls(*args, **kwds)
def set_python_instance_state(self, instance, state, unsafe=False):
if hasattr(instance, '__setstate__'):
instance.__setstate__(state)
else:
slotstate = {}
if isinstance(state, tuple) and len(state) == 2:
state, slotstate = state
if hasattr(instance, '__dict__'):
if not unsafe and state:
for key in state.keys():
self.check_state_key(key)
instance.__dict__.update(state)
elif state:
slotstate.update(state)
for key, value in slotstate.items():
if not unsafe:
self.check_state_key(key)
setattr(instance, key, value)
def construct_python_object(self, suffix, node):
# Format:
# !!python/object:module.name { ... state ... }
instance = self.make_python_instance(suffix, node, newobj=True)
yield instance
deep = hasattr(instance, '__setstate__')
state = self.construct_mapping(node, deep=deep)
self.set_python_instance_state(instance, state)
def construct_python_object_apply(self, suffix, node, newobj=False):
# Format:
# !!python/object/apply # (or !!python/object/new)
# args: [ ... arguments ... ]
# kwds: { ... keywords ... }
# state: ... state ...
# listitems: [ ... listitems ... ]
# dictitems: { ... dictitems ... }
# or short format:
# !!python/object/apply [ ... arguments ... ]
# The difference between !!python/object/apply and !!python/object/new
# is how an object is created, check make_python_instance for details.
if isinstance(node, SequenceNode):
args = self.construct_sequence(node, deep=True)
kwds = {}
state = {}
listitems = []
dictitems = {}
else:
value = self.construct_mapping(node, deep=True)
args = value.get('args', [])
kwds = value.get('kwds', {})
state = value.get('state', {})
listitems = value.get('listitems', [])
dictitems = value.get('dictitems', {})
instance = self.make_python_instance(suffix, node, args, kwds, newobj)
if state:
self.set_python_instance_state(instance, state)
if listitems:
instance.extend(listitems)
if dictitems:
for key in dictitems:
instance[key] = dictitems[key]
return instance
def construct_python_object_new(self, suffix, node):
return self.construct_python_object_apply(suffix, node, newobj=True)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/none',
FullConstructor.construct_yaml_null)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/bool',
FullConstructor.construct_yaml_bool)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/str',
FullConstructor.construct_python_str)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/unicode',
FullConstructor.construct_python_unicode)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/bytes',
FullConstructor.construct_python_bytes)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/int',
FullConstructor.construct_yaml_int)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/long',
FullConstructor.construct_python_long)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/float',
FullConstructor.construct_yaml_float)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/complex',
FullConstructor.construct_python_complex)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/list',
FullConstructor.construct_yaml_seq)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/tuple',
FullConstructor.construct_python_tuple)
FullConstructor.add_constructor(
'tag:yaml.org,2002:python/dict',
FullConstructor.construct_yaml_map)
FullConstructor.add_multi_constructor(
'tag:yaml.org,2002:python/name:',
FullConstructor.construct_python_name)
class UnsafeConstructor(FullConstructor):
def find_python_module(self, name, mark):
return super(UnsafeConstructor, self).find_python_module(name, mark, unsafe=True)
def find_python_name(self, name, mark):
return super(UnsafeConstructor, self).find_python_name(name, mark, unsafe=True)
def make_python_instance(self, suffix, node, args=None, kwds=None, newobj=False):
return super(UnsafeConstructor, self).make_python_instance(
suffix, node, args, kwds, newobj, unsafe=True)
def set_python_instance_state(self, instance, state):
return super(UnsafeConstructor, self).set_python_instance_state(
instance, state, unsafe=True)
UnsafeConstructor.add_multi_constructor(
'tag:yaml.org,2002:python/module:',
UnsafeConstructor.construct_python_module)
UnsafeConstructor.add_multi_constructor(
'tag:yaml.org,2002:python/object:',
UnsafeConstructor.construct_python_object)
UnsafeConstructor.add_multi_constructor(
'tag:yaml.org,2002:python/object/new:',
UnsafeConstructor.construct_python_object_new)
UnsafeConstructor.add_multi_constructor(
'tag:yaml.org,2002:python/object/apply:',
UnsafeConstructor.construct_python_object_apply)
# Constructor is same as UnsafeConstructor. Need to leave this in place in case
# people have extended it directly.
class Constructor(UnsafeConstructor):
pass

101
lib/sunhpc/yaml/cyaml.py Normal file
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@@ -0,0 +1,101 @@
__all__ = [
'CBaseLoader', 'CSafeLoader', 'CFullLoader', 'CUnsafeLoader', 'CLoader',
'CBaseDumper', 'CSafeDumper', 'CDumper'
]
from yaml._yaml import CParser, CEmitter
from .constructor import *
from .serializer import *
from .representer import *
from .resolver import *
class CBaseLoader(CParser, BaseConstructor, BaseResolver):
def __init__(self, stream):
CParser.__init__(self, stream)
BaseConstructor.__init__(self)
BaseResolver.__init__(self)
class CSafeLoader(CParser, SafeConstructor, Resolver):
def __init__(self, stream):
CParser.__init__(self, stream)
SafeConstructor.__init__(self)
Resolver.__init__(self)
class CFullLoader(CParser, FullConstructor, Resolver):
def __init__(self, stream):
CParser.__init__(self, stream)
FullConstructor.__init__(self)
Resolver.__init__(self)
class CUnsafeLoader(CParser, UnsafeConstructor, Resolver):
def __init__(self, stream):
CParser.__init__(self, stream)
UnsafeConstructor.__init__(self)
Resolver.__init__(self)
class CLoader(CParser, Constructor, Resolver):
def __init__(self, stream):
CParser.__init__(self, stream)
Constructor.__init__(self)
Resolver.__init__(self)
class CBaseDumper(CEmitter, BaseRepresenter, BaseResolver):
def __init__(self, stream,
default_style=None, default_flow_style=False,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None, sort_keys=True):
CEmitter.__init__(self, stream, canonical=canonical,
indent=indent, width=width, encoding=encoding,
allow_unicode=allow_unicode, line_break=line_break,
explicit_start=explicit_start, explicit_end=explicit_end,
version=version, tags=tags)
Representer.__init__(self, default_style=default_style,
default_flow_style=default_flow_style, sort_keys=sort_keys)
Resolver.__init__(self)
class CSafeDumper(CEmitter, SafeRepresenter, Resolver):
def __init__(self, stream,
default_style=None, default_flow_style=False,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None, sort_keys=True):
CEmitter.__init__(self, stream, canonical=canonical,
indent=indent, width=width, encoding=encoding,
allow_unicode=allow_unicode, line_break=line_break,
explicit_start=explicit_start, explicit_end=explicit_end,
version=version, tags=tags)
SafeRepresenter.__init__(self, default_style=default_style,
default_flow_style=default_flow_style, sort_keys=sort_keys)
Resolver.__init__(self)
class CDumper(CEmitter, Serializer, Representer, Resolver):
def __init__(self, stream,
default_style=None, default_flow_style=False,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None, sort_keys=True):
CEmitter.__init__(self, stream, canonical=canonical,
indent=indent, width=width, encoding=encoding,
allow_unicode=allow_unicode, line_break=line_break,
explicit_start=explicit_start, explicit_end=explicit_end,
version=version, tags=tags)
Representer.__init__(self, default_style=default_style,
default_flow_style=default_flow_style, sort_keys=sort_keys)
Resolver.__init__(self)

62
lib/sunhpc/yaml/dumper.py Normal file
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__all__ = ['BaseDumper', 'SafeDumper', 'Dumper']
from .emitter import *
from .serializer import *
from .representer import *
from .resolver import *
class BaseDumper(Emitter, Serializer, BaseRepresenter, BaseResolver):
def __init__(self, stream,
default_style=None, default_flow_style=False,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None, sort_keys=True):
Emitter.__init__(self, stream, canonical=canonical,
indent=indent, width=width,
allow_unicode=allow_unicode, line_break=line_break)
Serializer.__init__(self, encoding=encoding,
explicit_start=explicit_start, explicit_end=explicit_end,
version=version, tags=tags)
Representer.__init__(self, default_style=default_style,
default_flow_style=default_flow_style, sort_keys=sort_keys)
Resolver.__init__(self)
class SafeDumper(Emitter, Serializer, SafeRepresenter, Resolver):
def __init__(self, stream,
default_style=None, default_flow_style=False,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None, sort_keys=True):
Emitter.__init__(self, stream, canonical=canonical,
indent=indent, width=width,
allow_unicode=allow_unicode, line_break=line_break)
Serializer.__init__(self, encoding=encoding,
explicit_start=explicit_start, explicit_end=explicit_end,
version=version, tags=tags)
SafeRepresenter.__init__(self, default_style=default_style,
default_flow_style=default_flow_style, sort_keys=sort_keys)
Resolver.__init__(self)
class Dumper(Emitter, Serializer, Representer, Resolver):
def __init__(self, stream,
default_style=None, default_flow_style=False,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None, sort_keys=True):
Emitter.__init__(self, stream, canonical=canonical,
indent=indent, width=width,
allow_unicode=allow_unicode, line_break=line_break)
Serializer.__init__(self, encoding=encoding,
explicit_start=explicit_start, explicit_end=explicit_end,
version=version, tags=tags)
Representer.__init__(self, default_style=default_style,
default_flow_style=default_flow_style, sort_keys=sort_keys)
Resolver.__init__(self)

1137
lib/sunhpc/yaml/emitter.py Normal file

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75
lib/sunhpc/yaml/error.py Normal file
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__all__ = ['Mark', 'YAMLError', 'MarkedYAMLError']
class Mark:
def __init__(self, name, index, line, column, buffer, pointer):
self.name = name
self.index = index
self.line = line
self.column = column
self.buffer = buffer
self.pointer = pointer
def get_snippet(self, indent=4, max_length=75):
if self.buffer is None:
return None
head = ''
start = self.pointer
while start > 0 and self.buffer[start-1] not in '\0\r\n\x85\u2028\u2029':
start -= 1
if self.pointer-start > max_length/2-1:
head = ' ... '
start += 5
break
tail = ''
end = self.pointer
while end < len(self.buffer) and self.buffer[end] not in '\0\r\n\x85\u2028\u2029':
end += 1
if end-self.pointer > max_length/2-1:
tail = ' ... '
end -= 5
break
snippet = self.buffer[start:end]
return ' '*indent + head + snippet + tail + '\n' \
+ ' '*(indent+self.pointer-start+len(head)) + '^'
def __str__(self):
snippet = self.get_snippet()
where = " in \"%s\", line %d, column %d" \
% (self.name, self.line+1, self.column+1)
if snippet is not None:
where += ":\n"+snippet
return where
class YAMLError(Exception):
pass
class MarkedYAMLError(YAMLError):
def __init__(self, context=None, context_mark=None,
problem=None, problem_mark=None, note=None):
self.context = context
self.context_mark = context_mark
self.problem = problem
self.problem_mark = problem_mark
self.note = note
def __str__(self):
lines = []
if self.context is not None:
lines.append(self.context)
if self.context_mark is not None \
and (self.problem is None or self.problem_mark is None
or self.context_mark.name != self.problem_mark.name
or self.context_mark.line != self.problem_mark.line
or self.context_mark.column != self.problem_mark.column):
lines.append(str(self.context_mark))
if self.problem is not None:
lines.append(self.problem)
if self.problem_mark is not None:
lines.append(str(self.problem_mark))
if self.note is not None:
lines.append(self.note)
return '\n'.join(lines)

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# Abstract classes.
class Event(object):
def __init__(self, start_mark=None, end_mark=None):
self.start_mark = start_mark
self.end_mark = end_mark
def __repr__(self):
attributes = [key for key in ['anchor', 'tag', 'implicit', 'value']
if hasattr(self, key)]
arguments = ', '.join(['%s=%r' % (key, getattr(self, key))
for key in attributes])
return '%s(%s)' % (self.__class__.__name__, arguments)
class NodeEvent(Event):
def __init__(self, anchor, start_mark=None, end_mark=None):
self.anchor = anchor
self.start_mark = start_mark
self.end_mark = end_mark
class CollectionStartEvent(NodeEvent):
def __init__(self, anchor, tag, implicit, start_mark=None, end_mark=None,
flow_style=None):
self.anchor = anchor
self.tag = tag
self.implicit = implicit
self.start_mark = start_mark
self.end_mark = end_mark
self.flow_style = flow_style
class CollectionEndEvent(Event):
pass
# Implementations.
class StreamStartEvent(Event):
def __init__(self, start_mark=None, end_mark=None, encoding=None):
self.start_mark = start_mark
self.end_mark = end_mark
self.encoding = encoding
class StreamEndEvent(Event):
pass
class DocumentStartEvent(Event):
def __init__(self, start_mark=None, end_mark=None,
explicit=None, version=None, tags=None):
self.start_mark = start_mark
self.end_mark = end_mark
self.explicit = explicit
self.version = version
self.tags = tags
class DocumentEndEvent(Event):
def __init__(self, start_mark=None, end_mark=None,
explicit=None):
self.start_mark = start_mark
self.end_mark = end_mark
self.explicit = explicit
class AliasEvent(NodeEvent):
pass
class ScalarEvent(NodeEvent):
def __init__(self, anchor, tag, implicit, value,
start_mark=None, end_mark=None, style=None):
self.anchor = anchor
self.tag = tag
self.implicit = implicit
self.value = value
self.start_mark = start_mark
self.end_mark = end_mark
self.style = style
class SequenceStartEvent(CollectionStartEvent):
pass
class SequenceEndEvent(CollectionEndEvent):
pass
class MappingStartEvent(CollectionStartEvent):
pass
class MappingEndEvent(CollectionEndEvent):
pass

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lib/sunhpc/yaml/loader.py Normal file
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__all__ = ['BaseLoader', 'FullLoader', 'SafeLoader', 'Loader', 'UnsafeLoader']
from .reader import *
from .scanner import *
from .parser import *
from .composer import *
from .constructor import *
from .resolver import *
class BaseLoader(Reader, Scanner, Parser, Composer, BaseConstructor, BaseResolver):
def __init__(self, stream):
Reader.__init__(self, stream)
Scanner.__init__(self)
Parser.__init__(self)
Composer.__init__(self)
BaseConstructor.__init__(self)
BaseResolver.__init__(self)
class FullLoader(Reader, Scanner, Parser, Composer, FullConstructor, Resolver):
def __init__(self, stream):
Reader.__init__(self, stream)
Scanner.__init__(self)
Parser.__init__(self)
Composer.__init__(self)
FullConstructor.__init__(self)
Resolver.__init__(self)
class SafeLoader(Reader, Scanner, Parser, Composer, SafeConstructor, Resolver):
def __init__(self, stream):
Reader.__init__(self, stream)
Scanner.__init__(self)
Parser.__init__(self)
Composer.__init__(self)
SafeConstructor.__init__(self)
Resolver.__init__(self)
class Loader(Reader, Scanner, Parser, Composer, Constructor, Resolver):
def __init__(self, stream):
Reader.__init__(self, stream)
Scanner.__init__(self)
Parser.__init__(self)
Composer.__init__(self)
Constructor.__init__(self)
Resolver.__init__(self)
# UnsafeLoader is the same as Loader (which is and was always unsafe on
# untrusted input). Use of either Loader or UnsafeLoader should be rare, since
# FullLoad should be able to load almost all YAML safely. Loader is left intact
# to ensure backwards compatibility.
class UnsafeLoader(Reader, Scanner, Parser, Composer, Constructor, Resolver):
def __init__(self, stream):
Reader.__init__(self, stream)
Scanner.__init__(self)
Parser.__init__(self)
Composer.__init__(self)
Constructor.__init__(self)
Resolver.__init__(self)

49
lib/sunhpc/yaml/nodes.py Normal file
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class Node(object):
def __init__(self, tag, value, start_mark, end_mark):
self.tag = tag
self.value = value
self.start_mark = start_mark
self.end_mark = end_mark
def __repr__(self):
value = self.value
#if isinstance(value, list):
# if len(value) == 0:
# value = '<empty>'
# elif len(value) == 1:
# value = '<1 item>'
# else:
# value = '<%d items>' % len(value)
#else:
# if len(value) > 75:
# value = repr(value[:70]+u' ... ')
# else:
# value = repr(value)
value = repr(value)
return '%s(tag=%r, value=%s)' % (self.__class__.__name__, self.tag, value)
class ScalarNode(Node):
id = 'scalar'
def __init__(self, tag, value,
start_mark=None, end_mark=None, style=None):
self.tag = tag
self.value = value
self.start_mark = start_mark
self.end_mark = end_mark
self.style = style
class CollectionNode(Node):
def __init__(self, tag, value,
start_mark=None, end_mark=None, flow_style=None):
self.tag = tag
self.value = value
self.start_mark = start_mark
self.end_mark = end_mark
self.flow_style = flow_style
class SequenceNode(CollectionNode):
id = 'sequence'
class MappingNode(CollectionNode):
id = 'mapping'

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lib/sunhpc/yaml/parser.py Normal file
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# The following YAML grammar is LL(1) and is parsed by a recursive descent
# parser.
#
# stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
# implicit_document ::= block_node DOCUMENT-END*
# explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
# block_node_or_indentless_sequence ::=
# ALIAS
# | properties (block_content | indentless_block_sequence)?
# | block_content
# | indentless_block_sequence
# block_node ::= ALIAS
# | properties block_content?
# | block_content
# flow_node ::= ALIAS
# | properties flow_content?
# | flow_content
# properties ::= TAG ANCHOR? | ANCHOR TAG?
# block_content ::= block_collection | flow_collection | SCALAR
# flow_content ::= flow_collection | SCALAR
# block_collection ::= block_sequence | block_mapping
# flow_collection ::= flow_sequence | flow_mapping
# block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
# indentless_sequence ::= (BLOCK-ENTRY block_node?)+
# block_mapping ::= BLOCK-MAPPING_START
# ((KEY block_node_or_indentless_sequence?)?
# (VALUE block_node_or_indentless_sequence?)?)*
# BLOCK-END
# flow_sequence ::= FLOW-SEQUENCE-START
# (flow_sequence_entry FLOW-ENTRY)*
# flow_sequence_entry?
# FLOW-SEQUENCE-END
# flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
# flow_mapping ::= FLOW-MAPPING-START
# (flow_mapping_entry FLOW-ENTRY)*
# flow_mapping_entry?
# FLOW-MAPPING-END
# flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
#
# FIRST sets:
#
# stream: { STREAM-START }
# explicit_document: { DIRECTIVE DOCUMENT-START }
# implicit_document: FIRST(block_node)
# block_node: { ALIAS TAG ANCHOR SCALAR BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START }
# flow_node: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START }
# block_content: { BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START SCALAR }
# flow_content: { FLOW-SEQUENCE-START FLOW-MAPPING-START SCALAR }
# block_collection: { BLOCK-SEQUENCE-START BLOCK-MAPPING-START }
# flow_collection: { FLOW-SEQUENCE-START FLOW-MAPPING-START }
# block_sequence: { BLOCK-SEQUENCE-START }
# block_mapping: { BLOCK-MAPPING-START }
# block_node_or_indentless_sequence: { ALIAS ANCHOR TAG SCALAR BLOCK-SEQUENCE-START BLOCK-MAPPING-START FLOW-SEQUENCE-START FLOW-MAPPING-START BLOCK-ENTRY }
# indentless_sequence: { ENTRY }
# flow_collection: { FLOW-SEQUENCE-START FLOW-MAPPING-START }
# flow_sequence: { FLOW-SEQUENCE-START }
# flow_mapping: { FLOW-MAPPING-START }
# flow_sequence_entry: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START KEY }
# flow_mapping_entry: { ALIAS ANCHOR TAG SCALAR FLOW-SEQUENCE-START FLOW-MAPPING-START KEY }
__all__ = ['Parser', 'ParserError']
from .error import MarkedYAMLError
from .tokens import *
from .events import *
from .scanner import *
class ParserError(MarkedYAMLError):
pass
class Parser:
# Since writing a recursive-descendant parser is a straightforward task, we
# do not give many comments here.
DEFAULT_TAGS = {
'!': '!',
'!!': 'tag:yaml.org,2002:',
}
def __init__(self):
self.current_event = None
self.yaml_version = None
self.tag_handles = {}
self.states = []
self.marks = []
self.state = self.parse_stream_start
def dispose(self):
# Reset the state attributes (to clear self-references)
self.states = []
self.state = None
def check_event(self, *choices):
# Check the type of the next event.
if self.current_event is None:
if self.state:
self.current_event = self.state()
if self.current_event is not None:
if not choices:
return True
for choice in choices:
if isinstance(self.current_event, choice):
return True
return False
def peek_event(self):
# Get the next event.
if self.current_event is None:
if self.state:
self.current_event = self.state()
return self.current_event
def get_event(self):
# Get the next event and proceed further.
if self.current_event is None:
if self.state:
self.current_event = self.state()
value = self.current_event
self.current_event = None
return value
# stream ::= STREAM-START implicit_document? explicit_document* STREAM-END
# implicit_document ::= block_node DOCUMENT-END*
# explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END*
def parse_stream_start(self):
# Parse the stream start.
token = self.get_token()
event = StreamStartEvent(token.start_mark, token.end_mark,
encoding=token.encoding)
# Prepare the next state.
self.state = self.parse_implicit_document_start
return event
def parse_implicit_document_start(self):
# Parse an implicit document.
if not self.check_token(DirectiveToken, DocumentStartToken,
StreamEndToken):
self.tag_handles = self.DEFAULT_TAGS
token = self.peek_token()
start_mark = end_mark = token.start_mark
event = DocumentStartEvent(start_mark, end_mark,
explicit=False)
# Prepare the next state.
self.states.append(self.parse_document_end)
self.state = self.parse_block_node
return event
else:
return self.parse_document_start()
def parse_document_start(self):
# Parse any extra document end indicators.
while self.check_token(DocumentEndToken):
self.get_token()
# Parse an explicit document.
if not self.check_token(StreamEndToken):
token = self.peek_token()
start_mark = token.start_mark
version, tags = self.process_directives()
if not self.check_token(DocumentStartToken):
raise ParserError(None, None,
"expected '<document start>', but found %r"
% self.peek_token().id,
self.peek_token().start_mark)
token = self.get_token()
end_mark = token.end_mark
event = DocumentStartEvent(start_mark, end_mark,
explicit=True, version=version, tags=tags)
self.states.append(self.parse_document_end)
self.state = self.parse_document_content
else:
# Parse the end of the stream.
token = self.get_token()
event = StreamEndEvent(token.start_mark, token.end_mark)
assert not self.states
assert not self.marks
self.state = None
return event
def parse_document_end(self):
# Parse the document end.
token = self.peek_token()
start_mark = end_mark = token.start_mark
explicit = False
if self.check_token(DocumentEndToken):
token = self.get_token()
end_mark = token.end_mark
explicit = True
event = DocumentEndEvent(start_mark, end_mark,
explicit=explicit)
# Prepare the next state.
self.state = self.parse_document_start
return event
def parse_document_content(self):
if self.check_token(DirectiveToken,
DocumentStartToken, DocumentEndToken, StreamEndToken):
event = self.process_empty_scalar(self.peek_token().start_mark)
self.state = self.states.pop()
return event
else:
return self.parse_block_node()
def process_directives(self):
self.yaml_version = None
self.tag_handles = {}
while self.check_token(DirectiveToken):
token = self.get_token()
if token.name == 'YAML':
if self.yaml_version is not None:
raise ParserError(None, None,
"found duplicate YAML directive", token.start_mark)
major, minor = token.value
if major != 1:
raise ParserError(None, None,
"found incompatible YAML document (version 1.* is required)",
token.start_mark)
self.yaml_version = token.value
elif token.name == 'TAG':
handle, prefix = token.value
if handle in self.tag_handles:
raise ParserError(None, None,
"duplicate tag handle %r" % handle,
token.start_mark)
self.tag_handles[handle] = prefix
if self.tag_handles:
value = self.yaml_version, self.tag_handles.copy()
else:
value = self.yaml_version, None
for key in self.DEFAULT_TAGS:
if key not in self.tag_handles:
self.tag_handles[key] = self.DEFAULT_TAGS[key]
return value
# block_node_or_indentless_sequence ::= ALIAS
# | properties (block_content | indentless_block_sequence)?
# | block_content
# | indentless_block_sequence
# block_node ::= ALIAS
# | properties block_content?
# | block_content
# flow_node ::= ALIAS
# | properties flow_content?
# | flow_content
# properties ::= TAG ANCHOR? | ANCHOR TAG?
# block_content ::= block_collection | flow_collection | SCALAR
# flow_content ::= flow_collection | SCALAR
# block_collection ::= block_sequence | block_mapping
# flow_collection ::= flow_sequence | flow_mapping
def parse_block_node(self):
return self.parse_node(block=True)
def parse_flow_node(self):
return self.parse_node()
def parse_block_node_or_indentless_sequence(self):
return self.parse_node(block=True, indentless_sequence=True)
def parse_node(self, block=False, indentless_sequence=False):
if self.check_token(AliasToken):
token = self.get_token()
event = AliasEvent(token.value, token.start_mark, token.end_mark)
self.state = self.states.pop()
else:
anchor = None
tag = None
start_mark = end_mark = tag_mark = None
if self.check_token(AnchorToken):
token = self.get_token()
start_mark = token.start_mark
end_mark = token.end_mark
anchor = token.value
if self.check_token(TagToken):
token = self.get_token()
tag_mark = token.start_mark
end_mark = token.end_mark
tag = token.value
elif self.check_token(TagToken):
token = self.get_token()
start_mark = tag_mark = token.start_mark
end_mark = token.end_mark
tag = token.value
if self.check_token(AnchorToken):
token = self.get_token()
end_mark = token.end_mark
anchor = token.value
if tag is not None:
handle, suffix = tag
if handle is not None:
if handle not in self.tag_handles:
raise ParserError("while parsing a node", start_mark,
"found undefined tag handle %r" % handle,
tag_mark)
tag = self.tag_handles[handle]+suffix
else:
tag = suffix
#if tag == '!':
# raise ParserError("while parsing a node", start_mark,
# "found non-specific tag '!'", tag_mark,
# "Please check 'http://pyyaml.org/wiki/YAMLNonSpecificTag' and share your opinion.")
if start_mark is None:
start_mark = end_mark = self.peek_token().start_mark
event = None
implicit = (tag is None or tag == '!')
if indentless_sequence and self.check_token(BlockEntryToken):
end_mark = self.peek_token().end_mark
event = SequenceStartEvent(anchor, tag, implicit,
start_mark, end_mark)
self.state = self.parse_indentless_sequence_entry
else:
if self.check_token(ScalarToken):
token = self.get_token()
end_mark = token.end_mark
if (token.plain and tag is None) or tag == '!':
implicit = (True, False)
elif tag is None:
implicit = (False, True)
else:
implicit = (False, False)
event = ScalarEvent(anchor, tag, implicit, token.value,
start_mark, end_mark, style=token.style)
self.state = self.states.pop()
elif self.check_token(FlowSequenceStartToken):
end_mark = self.peek_token().end_mark
event = SequenceStartEvent(anchor, tag, implicit,
start_mark, end_mark, flow_style=True)
self.state = self.parse_flow_sequence_first_entry
elif self.check_token(FlowMappingStartToken):
end_mark = self.peek_token().end_mark
event = MappingStartEvent(anchor, tag, implicit,
start_mark, end_mark, flow_style=True)
self.state = self.parse_flow_mapping_first_key
elif block and self.check_token(BlockSequenceStartToken):
end_mark = self.peek_token().start_mark
event = SequenceStartEvent(anchor, tag, implicit,
start_mark, end_mark, flow_style=False)
self.state = self.parse_block_sequence_first_entry
elif block and self.check_token(BlockMappingStartToken):
end_mark = self.peek_token().start_mark
event = MappingStartEvent(anchor, tag, implicit,
start_mark, end_mark, flow_style=False)
self.state = self.parse_block_mapping_first_key
elif anchor is not None or tag is not None:
# Empty scalars are allowed even if a tag or an anchor is
# specified.
event = ScalarEvent(anchor, tag, (implicit, False), '',
start_mark, end_mark)
self.state = self.states.pop()
else:
if block:
node = 'block'
else:
node = 'flow'
token = self.peek_token()
raise ParserError("while parsing a %s node" % node, start_mark,
"expected the node content, but found %r" % token.id,
token.start_mark)
return event
# block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END
def parse_block_sequence_first_entry(self):
token = self.get_token()
self.marks.append(token.start_mark)
return self.parse_block_sequence_entry()
def parse_block_sequence_entry(self):
if self.check_token(BlockEntryToken):
token = self.get_token()
if not self.check_token(BlockEntryToken, BlockEndToken):
self.states.append(self.parse_block_sequence_entry)
return self.parse_block_node()
else:
self.state = self.parse_block_sequence_entry
return self.process_empty_scalar(token.end_mark)
if not self.check_token(BlockEndToken):
token = self.peek_token()
raise ParserError("while parsing a block collection", self.marks[-1],
"expected <block end>, but found %r" % token.id, token.start_mark)
token = self.get_token()
event = SequenceEndEvent(token.start_mark, token.end_mark)
self.state = self.states.pop()
self.marks.pop()
return event
# indentless_sequence ::= (BLOCK-ENTRY block_node?)+
def parse_indentless_sequence_entry(self):
if self.check_token(BlockEntryToken):
token = self.get_token()
if not self.check_token(BlockEntryToken,
KeyToken, ValueToken, BlockEndToken):
self.states.append(self.parse_indentless_sequence_entry)
return self.parse_block_node()
else:
self.state = self.parse_indentless_sequence_entry
return self.process_empty_scalar(token.end_mark)
token = self.peek_token()
event = SequenceEndEvent(token.start_mark, token.start_mark)
self.state = self.states.pop()
return event
# block_mapping ::= BLOCK-MAPPING_START
# ((KEY block_node_or_indentless_sequence?)?
# (VALUE block_node_or_indentless_sequence?)?)*
# BLOCK-END
def parse_block_mapping_first_key(self):
token = self.get_token()
self.marks.append(token.start_mark)
return self.parse_block_mapping_key()
def parse_block_mapping_key(self):
if self.check_token(KeyToken):
token = self.get_token()
if not self.check_token(KeyToken, ValueToken, BlockEndToken):
self.states.append(self.parse_block_mapping_value)
return self.parse_block_node_or_indentless_sequence()
else:
self.state = self.parse_block_mapping_value
return self.process_empty_scalar(token.end_mark)
if not self.check_token(BlockEndToken):
token = self.peek_token()
raise ParserError("while parsing a block mapping", self.marks[-1],
"expected <block end>, but found %r" % token.id, token.start_mark)
token = self.get_token()
event = MappingEndEvent(token.start_mark, token.end_mark)
self.state = self.states.pop()
self.marks.pop()
return event
def parse_block_mapping_value(self):
if self.check_token(ValueToken):
token = self.get_token()
if not self.check_token(KeyToken, ValueToken, BlockEndToken):
self.states.append(self.parse_block_mapping_key)
return self.parse_block_node_or_indentless_sequence()
else:
self.state = self.parse_block_mapping_key
return self.process_empty_scalar(token.end_mark)
else:
self.state = self.parse_block_mapping_key
token = self.peek_token()
return self.process_empty_scalar(token.start_mark)
# flow_sequence ::= FLOW-SEQUENCE-START
# (flow_sequence_entry FLOW-ENTRY)*
# flow_sequence_entry?
# FLOW-SEQUENCE-END
# flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
#
# Note that while production rules for both flow_sequence_entry and
# flow_mapping_entry are equal, their interpretations are different.
# For `flow_sequence_entry`, the part `KEY flow_node? (VALUE flow_node?)?`
# generate an inline mapping (set syntax).
def parse_flow_sequence_first_entry(self):
token = self.get_token()
self.marks.append(token.start_mark)
return self.parse_flow_sequence_entry(first=True)
def parse_flow_sequence_entry(self, first=False):
if not self.check_token(FlowSequenceEndToken):
if not first:
if self.check_token(FlowEntryToken):
self.get_token()
else:
token = self.peek_token()
raise ParserError("while parsing a flow sequence", self.marks[-1],
"expected ',' or ']', but got %r" % token.id, token.start_mark)
if self.check_token(KeyToken):
token = self.peek_token()
event = MappingStartEvent(None, None, True,
token.start_mark, token.end_mark,
flow_style=True)
self.state = self.parse_flow_sequence_entry_mapping_key
return event
elif not self.check_token(FlowSequenceEndToken):
self.states.append(self.parse_flow_sequence_entry)
return self.parse_flow_node()
token = self.get_token()
event = SequenceEndEvent(token.start_mark, token.end_mark)
self.state = self.states.pop()
self.marks.pop()
return event
def parse_flow_sequence_entry_mapping_key(self):
token = self.get_token()
if not self.check_token(ValueToken,
FlowEntryToken, FlowSequenceEndToken):
self.states.append(self.parse_flow_sequence_entry_mapping_value)
return self.parse_flow_node()
else:
self.state = self.parse_flow_sequence_entry_mapping_value
return self.process_empty_scalar(token.end_mark)
def parse_flow_sequence_entry_mapping_value(self):
if self.check_token(ValueToken):
token = self.get_token()
if not self.check_token(FlowEntryToken, FlowSequenceEndToken):
self.states.append(self.parse_flow_sequence_entry_mapping_end)
return self.parse_flow_node()
else:
self.state = self.parse_flow_sequence_entry_mapping_end
return self.process_empty_scalar(token.end_mark)
else:
self.state = self.parse_flow_sequence_entry_mapping_end
token = self.peek_token()
return self.process_empty_scalar(token.start_mark)
def parse_flow_sequence_entry_mapping_end(self):
self.state = self.parse_flow_sequence_entry
token = self.peek_token()
return MappingEndEvent(token.start_mark, token.start_mark)
# flow_mapping ::= FLOW-MAPPING-START
# (flow_mapping_entry FLOW-ENTRY)*
# flow_mapping_entry?
# FLOW-MAPPING-END
# flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)?
def parse_flow_mapping_first_key(self):
token = self.get_token()
self.marks.append(token.start_mark)
return self.parse_flow_mapping_key(first=True)
def parse_flow_mapping_key(self, first=False):
if not self.check_token(FlowMappingEndToken):
if not first:
if self.check_token(FlowEntryToken):
self.get_token()
else:
token = self.peek_token()
raise ParserError("while parsing a flow mapping", self.marks[-1],
"expected ',' or '}', but got %r" % token.id, token.start_mark)
if self.check_token(KeyToken):
token = self.get_token()
if not self.check_token(ValueToken,
FlowEntryToken, FlowMappingEndToken):
self.states.append(self.parse_flow_mapping_value)
return self.parse_flow_node()
else:
self.state = self.parse_flow_mapping_value
return self.process_empty_scalar(token.end_mark)
elif not self.check_token(FlowMappingEndToken):
self.states.append(self.parse_flow_mapping_empty_value)
return self.parse_flow_node()
token = self.get_token()
event = MappingEndEvent(token.start_mark, token.end_mark)
self.state = self.states.pop()
self.marks.pop()
return event
def parse_flow_mapping_value(self):
if self.check_token(ValueToken):
token = self.get_token()
if not self.check_token(FlowEntryToken, FlowMappingEndToken):
self.states.append(self.parse_flow_mapping_key)
return self.parse_flow_node()
else:
self.state = self.parse_flow_mapping_key
return self.process_empty_scalar(token.end_mark)
else:
self.state = self.parse_flow_mapping_key
token = self.peek_token()
return self.process_empty_scalar(token.start_mark)
def parse_flow_mapping_empty_value(self):
self.state = self.parse_flow_mapping_key
return self.process_empty_scalar(self.peek_token().start_mark)
def process_empty_scalar(self, mark):
return ScalarEvent(None, None, (True, False), '', mark, mark)

185
lib/sunhpc/yaml/reader.py Normal file
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# This module contains abstractions for the input stream. You don't have to
# looks further, there are no pretty code.
#
# We define two classes here.
#
# Mark(source, line, column)
# It's just a record and its only use is producing nice error messages.
# Parser does not use it for any other purposes.
#
# Reader(source, data)
# Reader determines the encoding of `data` and converts it to unicode.
# Reader provides the following methods and attributes:
# reader.peek(length=1) - return the next `length` characters
# reader.forward(length=1) - move the current position to `length` characters.
# reader.index - the number of the current character.
# reader.line, stream.column - the line and the column of the current character.
__all__ = ['Reader', 'ReaderError']
from .error import YAMLError, Mark
import codecs, re
class ReaderError(YAMLError):
def __init__(self, name, position, character, encoding, reason):
self.name = name
self.character = character
self.position = position
self.encoding = encoding
self.reason = reason
def __str__(self):
if isinstance(self.character, bytes):
return "'%s' codec can't decode byte #x%02x: %s\n" \
" in \"%s\", position %d" \
% (self.encoding, ord(self.character), self.reason,
self.name, self.position)
else:
return "unacceptable character #x%04x: %s\n" \
" in \"%s\", position %d" \
% (self.character, self.reason,
self.name, self.position)
class Reader(object):
# Reader:
# - determines the data encoding and converts it to a unicode string,
# - checks if characters are in allowed range,
# - adds '\0' to the end.
# Reader accepts
# - a `bytes` object,
# - a `str` object,
# - a file-like object with its `read` method returning `str`,
# - a file-like object with its `read` method returning `unicode`.
# Yeah, it's ugly and slow.
def __init__(self, stream):
self.name = None
self.stream = None
self.stream_pointer = 0
self.eof = True
self.buffer = ''
self.pointer = 0
self.raw_buffer = None
self.raw_decode = None
self.encoding = None
self.index = 0
self.line = 0
self.column = 0
if isinstance(stream, str):
self.name = "<unicode string>"
self.check_printable(stream)
self.buffer = stream+'\0'
elif isinstance(stream, bytes):
self.name = "<byte string>"
self.raw_buffer = stream
self.determine_encoding()
else:
self.stream = stream
self.name = getattr(stream, 'name', "<file>")
self.eof = False
self.raw_buffer = None
self.determine_encoding()
def peek(self, index=0):
try:
return self.buffer[self.pointer+index]
except IndexError:
self.update(index+1)
return self.buffer[self.pointer+index]
def prefix(self, length=1):
if self.pointer+length >= len(self.buffer):
self.update(length)
return self.buffer[self.pointer:self.pointer+length]
def forward(self, length=1):
if self.pointer+length+1 >= len(self.buffer):
self.update(length+1)
while length:
ch = self.buffer[self.pointer]
self.pointer += 1
self.index += 1
if ch in '\n\x85\u2028\u2029' \
or (ch == '\r' and self.buffer[self.pointer] != '\n'):
self.line += 1
self.column = 0
elif ch != '\uFEFF':
self.column += 1
length -= 1
def get_mark(self):
if self.stream is None:
return Mark(self.name, self.index, self.line, self.column,
self.buffer, self.pointer)
else:
return Mark(self.name, self.index, self.line, self.column,
None, None)
def determine_encoding(self):
while not self.eof and (self.raw_buffer is None or len(self.raw_buffer) < 2):
self.update_raw()
if isinstance(self.raw_buffer, bytes):
if self.raw_buffer.startswith(codecs.BOM_UTF16_LE):
self.raw_decode = codecs.utf_16_le_decode
self.encoding = 'utf-16-le'
elif self.raw_buffer.startswith(codecs.BOM_UTF16_BE):
self.raw_decode = codecs.utf_16_be_decode
self.encoding = 'utf-16-be'
else:
self.raw_decode = codecs.utf_8_decode
self.encoding = 'utf-8'
self.update(1)
NON_PRINTABLE = re.compile('[^\x09\x0A\x0D\x20-\x7E\x85\xA0-\uD7FF\uE000-\uFFFD\U00010000-\U0010ffff]')
def check_printable(self, data):
match = self.NON_PRINTABLE.search(data)
if match:
character = match.group()
position = self.index+(len(self.buffer)-self.pointer)+match.start()
raise ReaderError(self.name, position, ord(character),
'unicode', "special characters are not allowed")
def update(self, length):
if self.raw_buffer is None:
return
self.buffer = self.buffer[self.pointer:]
self.pointer = 0
while len(self.buffer) < length:
if not self.eof:
self.update_raw()
if self.raw_decode is not None:
try:
data, converted = self.raw_decode(self.raw_buffer,
'strict', self.eof)
except UnicodeDecodeError as exc:
character = self.raw_buffer[exc.start]
if self.stream is not None:
position = self.stream_pointer-len(self.raw_buffer)+exc.start
else:
position = exc.start
raise ReaderError(self.name, position, character,
exc.encoding, exc.reason)
else:
data = self.raw_buffer
converted = len(data)
self.check_printable(data)
self.buffer += data
self.raw_buffer = self.raw_buffer[converted:]
if self.eof:
self.buffer += '\0'
self.raw_buffer = None
break
def update_raw(self, size=4096):
data = self.stream.read(size)
if self.raw_buffer is None:
self.raw_buffer = data
else:
self.raw_buffer += data
self.stream_pointer += len(data)
if not data:
self.eof = True

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__all__ = ['BaseRepresenter', 'SafeRepresenter', 'Representer',
'RepresenterError']
from .error import *
from .nodes import *
import datetime, copyreg, types, base64, collections
class RepresenterError(YAMLError):
pass
class BaseRepresenter:
yaml_representers = {}
yaml_multi_representers = {}
def __init__(self, default_style=None, default_flow_style=False, sort_keys=True):
self.default_style = default_style
self.sort_keys = sort_keys
self.default_flow_style = default_flow_style
self.represented_objects = {}
self.object_keeper = []
self.alias_key = None
def represent(self, data):
node = self.represent_data(data)
self.serialize(node)
self.represented_objects = {}
self.object_keeper = []
self.alias_key = None
def represent_data(self, data):
if self.ignore_aliases(data):
self.alias_key = None
else:
self.alias_key = id(data)
if self.alias_key is not None:
if self.alias_key in self.represented_objects:
node = self.represented_objects[self.alias_key]
#if node is None:
# raise RepresenterError("recursive objects are not allowed: %r" % data)
return node
#self.represented_objects[alias_key] = None
self.object_keeper.append(data)
data_types = type(data).__mro__
if data_types[0] in self.yaml_representers:
node = self.yaml_representers[data_types[0]](self, data)
else:
for data_type in data_types:
if data_type in self.yaml_multi_representers:
node = self.yaml_multi_representers[data_type](self, data)
break
else:
if None in self.yaml_multi_representers:
node = self.yaml_multi_representers[None](self, data)
elif None in self.yaml_representers:
node = self.yaml_representers[None](self, data)
else:
node = ScalarNode(None, str(data))
#if alias_key is not None:
# self.represented_objects[alias_key] = node
return node
@classmethod
def add_representer(cls, data_type, representer):
if not 'yaml_representers' in cls.__dict__:
cls.yaml_representers = cls.yaml_representers.copy()
cls.yaml_representers[data_type] = representer
@classmethod
def add_multi_representer(cls, data_type, representer):
if not 'yaml_multi_representers' in cls.__dict__:
cls.yaml_multi_representers = cls.yaml_multi_representers.copy()
cls.yaml_multi_representers[data_type] = representer
def represent_scalar(self, tag, value, style=None):
if style is None:
style = self.default_style
node = ScalarNode(tag, value, style=style)
if self.alias_key is not None:
self.represented_objects[self.alias_key] = node
return node
def represent_sequence(self, tag, sequence, flow_style=None):
value = []
node = SequenceNode(tag, value, flow_style=flow_style)
if self.alias_key is not None:
self.represented_objects[self.alias_key] = node
best_style = True
for item in sequence:
node_item = self.represent_data(item)
if not (isinstance(node_item, ScalarNode) and not node_item.style):
best_style = False
value.append(node_item)
if flow_style is None:
if self.default_flow_style is not None:
node.flow_style = self.default_flow_style
else:
node.flow_style = best_style
return node
def represent_mapping(self, tag, mapping, flow_style=None):
value = []
node = MappingNode(tag, value, flow_style=flow_style)
if self.alias_key is not None:
self.represented_objects[self.alias_key] = node
best_style = True
if hasattr(mapping, 'items'):
mapping = list(mapping.items())
if self.sort_keys:
try:
mapping = sorted(mapping)
except TypeError:
pass
for item_key, item_value in mapping:
node_key = self.represent_data(item_key)
node_value = self.represent_data(item_value)
if not (isinstance(node_key, ScalarNode) and not node_key.style):
best_style = False
if not (isinstance(node_value, ScalarNode) and not node_value.style):
best_style = False
value.append((node_key, node_value))
if flow_style is None:
if self.default_flow_style is not None:
node.flow_style = self.default_flow_style
else:
node.flow_style = best_style
return node
def ignore_aliases(self, data):
return False
class SafeRepresenter(BaseRepresenter):
def ignore_aliases(self, data):
if data is None:
return True
if isinstance(data, tuple) and data == ():
return True
if isinstance(data, (str, bytes, bool, int, float)):
return True
def represent_none(self, data):
return self.represent_scalar('tag:yaml.org,2002:null', 'null')
def represent_str(self, data):
return self.represent_scalar('tag:yaml.org,2002:str', data)
def represent_binary(self, data):
if hasattr(base64, 'encodebytes'):
data = base64.encodebytes(data).decode('ascii')
else:
data = base64.encodestring(data).decode('ascii')
return self.represent_scalar('tag:yaml.org,2002:binary', data, style='|')
def represent_bool(self, data):
if data:
value = 'true'
else:
value = 'false'
return self.represent_scalar('tag:yaml.org,2002:bool', value)
def represent_int(self, data):
return self.represent_scalar('tag:yaml.org,2002:int', str(data))
inf_value = 1e300
while repr(inf_value) != repr(inf_value*inf_value):
inf_value *= inf_value
def represent_float(self, data):
if data != data or (data == 0.0 and data == 1.0):
value = '.nan'
elif data == self.inf_value:
value = '.inf'
elif data == -self.inf_value:
value = '-.inf'
else:
value = repr(data).lower()
# Note that in some cases `repr(data)` represents a float number
# without the decimal parts. For instance:
# >>> repr(1e17)
# '1e17'
# Unfortunately, this is not a valid float representation according
# to the definition of the `!!float` tag. We fix this by adding
# '.0' before the 'e' symbol.
if '.' not in value and 'e' in value:
value = value.replace('e', '.0e', 1)
return self.represent_scalar('tag:yaml.org,2002:float', value)
def represent_list(self, data):
#pairs = (len(data) > 0 and isinstance(data, list))
#if pairs:
# for item in data:
# if not isinstance(item, tuple) or len(item) != 2:
# pairs = False
# break
#if not pairs:
return self.represent_sequence('tag:yaml.org,2002:seq', data)
#value = []
#for item_key, item_value in data:
# value.append(self.represent_mapping(u'tag:yaml.org,2002:map',
# [(item_key, item_value)]))
#return SequenceNode(u'tag:yaml.org,2002:pairs', value)
def represent_dict(self, data):
return self.represent_mapping('tag:yaml.org,2002:map', data)
def represent_set(self, data):
value = {}
for key in data:
value[key] = None
return self.represent_mapping('tag:yaml.org,2002:set', value)
def represent_date(self, data):
value = data.isoformat()
return self.represent_scalar('tag:yaml.org,2002:timestamp', value)
def represent_datetime(self, data):
value = data.isoformat(' ')
return self.represent_scalar('tag:yaml.org,2002:timestamp', value)
def represent_yaml_object(self, tag, data, cls, flow_style=None):
if hasattr(data, '__getstate__'):
state = data.__getstate__()
else:
state = data.__dict__.copy()
return self.represent_mapping(tag, state, flow_style=flow_style)
def represent_undefined(self, data):
raise RepresenterError("cannot represent an object", data)
SafeRepresenter.add_representer(type(None),
SafeRepresenter.represent_none)
SafeRepresenter.add_representer(str,
SafeRepresenter.represent_str)
SafeRepresenter.add_representer(bytes,
SafeRepresenter.represent_binary)
SafeRepresenter.add_representer(bool,
SafeRepresenter.represent_bool)
SafeRepresenter.add_representer(int,
SafeRepresenter.represent_int)
SafeRepresenter.add_representer(float,
SafeRepresenter.represent_float)
SafeRepresenter.add_representer(list,
SafeRepresenter.represent_list)
SafeRepresenter.add_representer(tuple,
SafeRepresenter.represent_list)
SafeRepresenter.add_representer(dict,
SafeRepresenter.represent_dict)
SafeRepresenter.add_representer(set,
SafeRepresenter.represent_set)
SafeRepresenter.add_representer(datetime.date,
SafeRepresenter.represent_date)
SafeRepresenter.add_representer(datetime.datetime,
SafeRepresenter.represent_datetime)
SafeRepresenter.add_representer(None,
SafeRepresenter.represent_undefined)
class Representer(SafeRepresenter):
def represent_complex(self, data):
if data.imag == 0.0:
data = '%r' % data.real
elif data.real == 0.0:
data = '%rj' % data.imag
elif data.imag > 0:
data = '%r+%rj' % (data.real, data.imag)
else:
data = '%r%rj' % (data.real, data.imag)
return self.represent_scalar('tag:yaml.org,2002:python/complex', data)
def represent_tuple(self, data):
return self.represent_sequence('tag:yaml.org,2002:python/tuple', data)
def represent_name(self, data):
name = '%s.%s' % (data.__module__, data.__name__)
return self.represent_scalar('tag:yaml.org,2002:python/name:'+name, '')
def represent_module(self, data):
return self.represent_scalar(
'tag:yaml.org,2002:python/module:'+data.__name__, '')
def represent_object(self, data):
# We use __reduce__ API to save the data. data.__reduce__ returns
# a tuple of length 2-5:
# (function, args, state, listitems, dictitems)
# For reconstructing, we calls function(*args), then set its state,
# listitems, and dictitems if they are not None.
# A special case is when function.__name__ == '__newobj__'. In this
# case we create the object with args[0].__new__(*args).
# Another special case is when __reduce__ returns a string - we don't
# support it.
# We produce a !!python/object, !!python/object/new or
# !!python/object/apply node.
cls = type(data)
if cls in copyreg.dispatch_table:
reduce = copyreg.dispatch_table[cls](data)
elif hasattr(data, '__reduce_ex__'):
reduce = data.__reduce_ex__(2)
elif hasattr(data, '__reduce__'):
reduce = data.__reduce__()
else:
raise RepresenterError("cannot represent an object", data)
reduce = (list(reduce)+[None]*5)[:5]
function, args, state, listitems, dictitems = reduce
args = list(args)
if state is None:
state = {}
if listitems is not None:
listitems = list(listitems)
if dictitems is not None:
dictitems = dict(dictitems)
if function.__name__ == '__newobj__':
function = args[0]
args = args[1:]
tag = 'tag:yaml.org,2002:python/object/new:'
newobj = True
else:
tag = 'tag:yaml.org,2002:python/object/apply:'
newobj = False
function_name = '%s.%s' % (function.__module__, function.__name__)
if not args and not listitems and not dictitems \
and isinstance(state, dict) and newobj:
return self.represent_mapping(
'tag:yaml.org,2002:python/object:'+function_name, state)
if not listitems and not dictitems \
and isinstance(state, dict) and not state:
return self.represent_sequence(tag+function_name, args)
value = {}
if args:
value['args'] = args
if state or not isinstance(state, dict):
value['state'] = state
if listitems:
value['listitems'] = listitems
if dictitems:
value['dictitems'] = dictitems
return self.represent_mapping(tag+function_name, value)
def represent_ordered_dict(self, data):
# Provide uniform representation across different Python versions.
data_type = type(data)
tag = 'tag:yaml.org,2002:python/object/apply:%s.%s' \
% (data_type.__module__, data_type.__name__)
items = [[key, value] for key, value in data.items()]
return self.represent_sequence(tag, [items])
Representer.add_representer(complex,
Representer.represent_complex)
Representer.add_representer(tuple,
Representer.represent_tuple)
Representer.add_multi_representer(type,
Representer.represent_name)
Representer.add_representer(collections.OrderedDict,
Representer.represent_ordered_dict)
Representer.add_representer(types.FunctionType,
Representer.represent_name)
Representer.add_representer(types.BuiltinFunctionType,
Representer.represent_name)
Representer.add_representer(types.ModuleType,
Representer.represent_module)
Representer.add_multi_representer(object,
Representer.represent_object)

227
lib/sunhpc/yaml/resolver.py Normal file
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__all__ = ['BaseResolver', 'Resolver']
from .error import *
from .nodes import *
import re
class ResolverError(YAMLError):
pass
class BaseResolver:
DEFAULT_SCALAR_TAG = 'tag:yaml.org,2002:str'
DEFAULT_SEQUENCE_TAG = 'tag:yaml.org,2002:seq'
DEFAULT_MAPPING_TAG = 'tag:yaml.org,2002:map'
yaml_implicit_resolvers = {}
yaml_path_resolvers = {}
def __init__(self):
self.resolver_exact_paths = []
self.resolver_prefix_paths = []
@classmethod
def add_implicit_resolver(cls, tag, regexp, first):
if not 'yaml_implicit_resolvers' in cls.__dict__:
implicit_resolvers = {}
for key in cls.yaml_implicit_resolvers:
implicit_resolvers[key] = cls.yaml_implicit_resolvers[key][:]
cls.yaml_implicit_resolvers = implicit_resolvers
if first is None:
first = [None]
for ch in first:
cls.yaml_implicit_resolvers.setdefault(ch, []).append((tag, regexp))
@classmethod
def add_path_resolver(cls, tag, path, kind=None):
# Note: `add_path_resolver` is experimental. The API could be changed.
# `new_path` is a pattern that is matched against the path from the
# root to the node that is being considered. `node_path` elements are
# tuples `(node_check, index_check)`. `node_check` is a node class:
# `ScalarNode`, `SequenceNode`, `MappingNode` or `None`. `None`
# matches any kind of a node. `index_check` could be `None`, a boolean
# value, a string value, or a number. `None` and `False` match against
# any _value_ of sequence and mapping nodes. `True` matches against
# any _key_ of a mapping node. A string `index_check` matches against
# a mapping value that corresponds to a scalar key which content is
# equal to the `index_check` value. An integer `index_check` matches
# against a sequence value with the index equal to `index_check`.
if not 'yaml_path_resolvers' in cls.__dict__:
cls.yaml_path_resolvers = cls.yaml_path_resolvers.copy()
new_path = []
for element in path:
if isinstance(element, (list, tuple)):
if len(element) == 2:
node_check, index_check = element
elif len(element) == 1:
node_check = element[0]
index_check = True
else:
raise ResolverError("Invalid path element: %s" % element)
else:
node_check = None
index_check = element
if node_check is str:
node_check = ScalarNode
elif node_check is list:
node_check = SequenceNode
elif node_check is dict:
node_check = MappingNode
elif node_check not in [ScalarNode, SequenceNode, MappingNode] \
and not isinstance(node_check, str) \
and node_check is not None:
raise ResolverError("Invalid node checker: %s" % node_check)
if not isinstance(index_check, (str, int)) \
and index_check is not None:
raise ResolverError("Invalid index checker: %s" % index_check)
new_path.append((node_check, index_check))
if kind is str:
kind = ScalarNode
elif kind is list:
kind = SequenceNode
elif kind is dict:
kind = MappingNode
elif kind not in [ScalarNode, SequenceNode, MappingNode] \
and kind is not None:
raise ResolverError("Invalid node kind: %s" % kind)
cls.yaml_path_resolvers[tuple(new_path), kind] = tag
def descend_resolver(self, current_node, current_index):
if not self.yaml_path_resolvers:
return
exact_paths = {}
prefix_paths = []
if current_node:
depth = len(self.resolver_prefix_paths)
for path, kind in self.resolver_prefix_paths[-1]:
if self.check_resolver_prefix(depth, path, kind,
current_node, current_index):
if len(path) > depth:
prefix_paths.append((path, kind))
else:
exact_paths[kind] = self.yaml_path_resolvers[path, kind]
else:
for path, kind in self.yaml_path_resolvers:
if not path:
exact_paths[kind] = self.yaml_path_resolvers[path, kind]
else:
prefix_paths.append((path, kind))
self.resolver_exact_paths.append(exact_paths)
self.resolver_prefix_paths.append(prefix_paths)
def ascend_resolver(self):
if not self.yaml_path_resolvers:
return
self.resolver_exact_paths.pop()
self.resolver_prefix_paths.pop()
def check_resolver_prefix(self, depth, path, kind,
current_node, current_index):
node_check, index_check = path[depth-1]
if isinstance(node_check, str):
if current_node.tag != node_check:
return
elif node_check is not None:
if not isinstance(current_node, node_check):
return
if index_check is True and current_index is not None:
return
if (index_check is False or index_check is None) \
and current_index is None:
return
if isinstance(index_check, str):
if not (isinstance(current_index, ScalarNode)
and index_check == current_index.value):
return
elif isinstance(index_check, int) and not isinstance(index_check, bool):
if index_check != current_index:
return
return True
def resolve(self, kind, value, implicit):
if kind is ScalarNode and implicit[0]:
if value == '':
resolvers = self.yaml_implicit_resolvers.get('', [])
else:
resolvers = self.yaml_implicit_resolvers.get(value[0], [])
wildcard_resolvers = self.yaml_implicit_resolvers.get(None, [])
for tag, regexp in resolvers + wildcard_resolvers:
if regexp.match(value):
return tag
implicit = implicit[1]
if self.yaml_path_resolvers:
exact_paths = self.resolver_exact_paths[-1]
if kind in exact_paths:
return exact_paths[kind]
if None in exact_paths:
return exact_paths[None]
if kind is ScalarNode:
return self.DEFAULT_SCALAR_TAG
elif kind is SequenceNode:
return self.DEFAULT_SEQUENCE_TAG
elif kind is MappingNode:
return self.DEFAULT_MAPPING_TAG
class Resolver(BaseResolver):
pass
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:bool',
re.compile(r'''^(?:yes|Yes|YES|no|No|NO
|true|True|TRUE|false|False|FALSE
|on|On|ON|off|Off|OFF)$''', re.X),
list('yYnNtTfFoO'))
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:float',
re.compile(r'''^(?:[-+]?(?:[0-9][0-9_]*)\.[0-9_]*(?:[eE][-+][0-9]+)?
|\.[0-9][0-9_]*(?:[eE][-+][0-9]+)?
|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\.[0-9_]*
|[-+]?\.(?:inf|Inf|INF)
|\.(?:nan|NaN|NAN))$''', re.X),
list('-+0123456789.'))
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:int',
re.compile(r'''^(?:[-+]?0b[0-1_]+
|[-+]?0[0-7_]+
|[-+]?(?:0|[1-9][0-9_]*)
|[-+]?0x[0-9a-fA-F_]+
|[-+]?[1-9][0-9_]*(?::[0-5]?[0-9])+)$''', re.X),
list('-+0123456789'))
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:merge',
re.compile(r'^(?:<<)$'),
['<'])
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:null',
re.compile(r'''^(?: ~
|null|Null|NULL
| )$''', re.X),
['~', 'n', 'N', ''])
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:timestamp',
re.compile(r'''^(?:[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]
|[0-9][0-9][0-9][0-9] -[0-9][0-9]? -[0-9][0-9]?
(?:[Tt]|[ \t]+)[0-9][0-9]?
:[0-9][0-9] :[0-9][0-9] (?:\.[0-9]*)?
(?:[ \t]*(?:Z|[-+][0-9][0-9]?(?::[0-9][0-9])?))?)$''', re.X),
list('0123456789'))
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:value',
re.compile(r'^(?:=)$'),
['='])
# The following resolver is only for documentation purposes. It cannot work
# because plain scalars cannot start with '!', '&', or '*'.
Resolver.add_implicit_resolver(
'tag:yaml.org,2002:yaml',
re.compile(r'^(?:!|&|\*)$'),
list('!&*'))

1435
lib/sunhpc/yaml/scanner.py Normal file

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__all__ = ['Serializer', 'SerializerError']
from .error import YAMLError
from .events import *
from .nodes import *
class SerializerError(YAMLError):
pass
class Serializer:
ANCHOR_TEMPLATE = 'id%03d'
def __init__(self, encoding=None,
explicit_start=None, explicit_end=None, version=None, tags=None):
self.use_encoding = encoding
self.use_explicit_start = explicit_start
self.use_explicit_end = explicit_end
self.use_version = version
self.use_tags = tags
self.serialized_nodes = {}
self.anchors = {}
self.last_anchor_id = 0
self.closed = None
def open(self):
if self.closed is None:
self.emit(StreamStartEvent(encoding=self.use_encoding))
self.closed = False
elif self.closed:
raise SerializerError("serializer is closed")
else:
raise SerializerError("serializer is already opened")
def close(self):
if self.closed is None:
raise SerializerError("serializer is not opened")
elif not self.closed:
self.emit(StreamEndEvent())
self.closed = True
#def __del__(self):
# self.close()
def serialize(self, node):
if self.closed is None:
raise SerializerError("serializer is not opened")
elif self.closed:
raise SerializerError("serializer is closed")
self.emit(DocumentStartEvent(explicit=self.use_explicit_start,
version=self.use_version, tags=self.use_tags))
self.anchor_node(node)
self.serialize_node(node, None, None)
self.emit(DocumentEndEvent(explicit=self.use_explicit_end))
self.serialized_nodes = {}
self.anchors = {}
self.last_anchor_id = 0
def anchor_node(self, node):
if node in self.anchors:
if self.anchors[node] is None:
self.anchors[node] = self.generate_anchor(node)
else:
self.anchors[node] = None
if isinstance(node, SequenceNode):
for item in node.value:
self.anchor_node(item)
elif isinstance(node, MappingNode):
for key, value in node.value:
self.anchor_node(key)
self.anchor_node(value)
def generate_anchor(self, node):
self.last_anchor_id += 1
return self.ANCHOR_TEMPLATE % self.last_anchor_id
def serialize_node(self, node, parent, index):
alias = self.anchors[node]
if node in self.serialized_nodes:
self.emit(AliasEvent(alias))
else:
self.serialized_nodes[node] = True
self.descend_resolver(parent, index)
if isinstance(node, ScalarNode):
detected_tag = self.resolve(ScalarNode, node.value, (True, False))
default_tag = self.resolve(ScalarNode, node.value, (False, True))
implicit = (node.tag == detected_tag), (node.tag == default_tag)
self.emit(ScalarEvent(alias, node.tag, implicit, node.value,
style=node.style))
elif isinstance(node, SequenceNode):
implicit = (node.tag
== self.resolve(SequenceNode, node.value, True))
self.emit(SequenceStartEvent(alias, node.tag, implicit,
flow_style=node.flow_style))
index = 0
for item in node.value:
self.serialize_node(item, node, index)
index += 1
self.emit(SequenceEndEvent())
elif isinstance(node, MappingNode):
implicit = (node.tag
== self.resolve(MappingNode, node.value, True))
self.emit(MappingStartEvent(alias, node.tag, implicit,
flow_style=node.flow_style))
for key, value in node.value:
self.serialize_node(key, node, None)
self.serialize_node(value, node, key)
self.emit(MappingEndEvent())
self.ascend_resolver()

104
lib/sunhpc/yaml/tokens.py Normal file
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class Token(object):
def __init__(self, start_mark, end_mark):
self.start_mark = start_mark
self.end_mark = end_mark
def __repr__(self):
attributes = [key for key in self.__dict__
if not key.endswith('_mark')]
attributes.sort()
arguments = ', '.join(['%s=%r' % (key, getattr(self, key))
for key in attributes])
return '%s(%s)' % (self.__class__.__name__, arguments)
#class BOMToken(Token):
# id = '<byte order mark>'
class DirectiveToken(Token):
id = '<directive>'
def __init__(self, name, value, start_mark, end_mark):
self.name = name
self.value = value
self.start_mark = start_mark
self.end_mark = end_mark
class DocumentStartToken(Token):
id = '<document start>'
class DocumentEndToken(Token):
id = '<document end>'
class StreamStartToken(Token):
id = '<stream start>'
def __init__(self, start_mark=None, end_mark=None,
encoding=None):
self.start_mark = start_mark
self.end_mark = end_mark
self.encoding = encoding
class StreamEndToken(Token):
id = '<stream end>'
class BlockSequenceStartToken(Token):
id = '<block sequence start>'
class BlockMappingStartToken(Token):
id = '<block mapping start>'
class BlockEndToken(Token):
id = '<block end>'
class FlowSequenceStartToken(Token):
id = '['
class FlowMappingStartToken(Token):
id = '{'
class FlowSequenceEndToken(Token):
id = ']'
class FlowMappingEndToken(Token):
id = '}'
class KeyToken(Token):
id = '?'
class ValueToken(Token):
id = ':'
class BlockEntryToken(Token):
id = '-'
class FlowEntryToken(Token):
id = ','
class AliasToken(Token):
id = '<alias>'
def __init__(self, value, start_mark, end_mark):
self.value = value
self.start_mark = start_mark
self.end_mark = end_mark
class AnchorToken(Token):
id = '<anchor>'
def __init__(self, value, start_mark, end_mark):
self.value = value
self.start_mark = start_mark
self.end_mark = end_mark
class TagToken(Token):
id = '<tag>'
def __init__(self, value, start_mark, end_mark):
self.value = value
self.start_mark = start_mark
self.end_mark = end_mark
class ScalarToken(Token):
id = '<scalar>'
def __init__(self, value, plain, start_mark, end_mark, style=None):
self.value = value
self.plain = plain
self.start_mark = start_mark
self.end_mark = end_mark
self.style = style