From 47e3138ee978ce708a41f38a0d874376d7ae5c78 Mon Sep 17 00:00:00 2001
From: Sebastian Thiel <byronimo@gmail.com>
Date: Fri, 25 Jun 2010 23:58:24 +0200
Subject: Adjusted all files to (hopefully) deal with the fact that all objects
 now use 20 byte sha's internally as it is closer to the GitDB implementation
 Switched all remaining files back to tabs Adjusted all remaining docstrings
 to suit the sphinx doc convention - its likely that there are many of
 docstring syntax errors though

---
 lib/git/config.py | 762 ++++++++++++++++++++++++++----------------------------
 1 file changed, 363 insertions(+), 399 deletions(-)

(limited to 'lib/git/config.py')

diff --git a/lib/git/config.py b/lib/git/config.py
index e5fd9902..e4af57f0 100644
--- a/lib/git/config.py
+++ b/lib/git/config.py
@@ -3,10 +3,8 @@
 #
 # This module is part of GitPython and is released under
 # the BSD License: http://www.opensource.org/licenses/bsd-license.php
-"""
-Module containing module parser implementation able to properly read and write
-configuration files
-"""
+"""Module containing module parser implementation able to properly read and write
+configuration files"""
 
 import re
 import os
@@ -17,404 +15,370 @@ import cStringIO
 from git.odict import OrderedDict
 from git.utils import LockFile
 
-class _MetaParserBuilder(type):
-    """
-    Utlity class wrapping base-class methods into decorators that assure read-only properties
-    """
-    def __new__(metacls, name, bases, clsdict):
-        """
-        Equip all base-class methods with a _needs_values decorator, and all non-const methods
-        with a _set_dirty_and_flush_changes decorator in addition to that.
-        """
-        mutating_methods = clsdict['_mutating_methods_']
-        for base in bases:
-            methods = ( t for t in inspect.getmembers(base, inspect.ismethod) if not t[0].startswith("_") )
-            for name, method in methods:
-                if name in clsdict:
-                    continue
-                method_with_values = _needs_values(method)
-                if name in mutating_methods:
-                    method_with_values = _set_dirty_and_flush_changes(method_with_values)
-                # END mutating methods handling
-                
-                clsdict[name] = method_with_values
-        # END for each base
-        
-        new_type = super(_MetaParserBuilder, metacls).__new__(metacls, name, bases, clsdict)
-        return new_type
-    
-    
+__all__ = ('GitConfigParser', )
 
-def _needs_values(func):
-    """
-    Returns method assuring we read values (on demand) before we try to access them
-    """
-    def assure_data_present(self, *args, **kwargs):
-        self.read()
-        return func(self, *args, **kwargs)
-    # END wrapper method
-    assure_data_present.__name__ = func.__name__
-    return assure_data_present
-    
-def _set_dirty_and_flush_changes(non_const_func):
-    """
-    Return method that checks whether given non constant function may be called.
-    If so, the instance will be set dirty.
-    Additionally, we flush the changes right to disk
-    """
-    def flush_changes(self, *args, **kwargs):
-        rval = non_const_func(self, *args, **kwargs)
-        self.write()
-        return rval
-    # END wrapper method
-    flush_changes.__name__ = non_const_func.__name__
-    return flush_changes
-    
-    
+class MetaParserBuilder(type):
+	"""Utlity class wrapping base-class methods into decorators that assure read-only properties"""
+	def __new__(metacls, name, bases, clsdict):
+		"""
+		Equip all base-class methods with a needs_values decorator, and all non-const methods
+		with a set_dirty_and_flush_changes decorator in addition to that."""
+		mutating_methods = clsdict['_mutating_methods_']
+		for base in bases:
+			methods = ( t for t in inspect.getmembers(base, inspect.ismethod) if not t[0].startswith("_") )
+			for name, method in methods:
+				if name in clsdict:
+					continue
+				method_with_values = needs_values(method)
+				if name in mutating_methods:
+					method_with_values = set_dirty_and_flush_changes(method_with_values)
+				# END mutating methods handling
+				
+				clsdict[name] = method_with_values
+		# END for each base
+		
+		new_type = super(MetaParserBuilder, metacls).__new__(metacls, name, bases, clsdict)
+		return new_type
+	
+	
+
+def needs_values(func):
+	"""Returns method assuring we read values (on demand) before we try to access them"""
+	def assure_data_present(self, *args, **kwargs):
+		self.read()
+		return func(self, *args, **kwargs)
+	# END wrapper method
+	assure_data_present.__name__ = func.__name__
+	return assure_data_present
+	
+def set_dirty_and_flush_changes(non_const_func):
+	"""Return method that checks whether given non constant function may be called.
+	If so, the instance will be set dirty.
+	Additionally, we flush the changes right to disk"""
+	def flush_changes(self, *args, **kwargs):
+		rval = non_const_func(self, *args, **kwargs)
+		self.write()
+		return rval
+	# END wrapper method
+	flush_changes.__name__ = non_const_func.__name__
+	return flush_changes
+	
+	
 
 class GitConfigParser(cp.RawConfigParser, object):
-    """
-    Implements specifics required to read git style configuration files.
-    
-    This variation behaves much like the git.config command such that the configuration
-    will be read on demand based on the filepath given during initialization.
-    
-    The changes will automatically be written once the instance goes out of scope, but 
-    can be triggered manually as well.
-    
-    The configuration file will be locked if you intend to change values preventing other 
-    instances to write concurrently.
-    
-    NOTE
-        The config is case-sensitive even when queried, hence section and option names
-        must match perfectly.
-    """
-    __metaclass__ = _MetaParserBuilder
-    
-    
-    #{ Configuration
-    # The lock type determines the type of lock to use in new configuration readers.
-    # They must be compatible to the LockFile interface.
-    # A suitable alternative would be the BlockingLockFile
-    t_lock = LockFile
-    
-    #} END configuration 
-    
-    OPTCRE = re.compile(
-        r'\s?(?P<option>[^:=\s][^:=]*)'       # very permissive, incuding leading whitespace
-        r'\s*(?P<vi>[:=])\s*'                 # any number of space/tab,
-                                              # followed by separator
-                                              # (either : or =), followed
-                                              # by any # space/tab
-        r'(?P<value>.*)$'                     # everything up to eol
-        )
-    
-    # list of RawConfigParser methods able to change the instance
-    _mutating_methods_ = ("add_section", "remove_section", "remove_option", "set")
-    __slots__ = ("_sections", "_defaults", "_file_or_files", "_read_only","_is_initialized", '_lock')
-    
-    def __init__(self, file_or_files, read_only=True):
-        """
-        Initialize a configuration reader to read the given file_or_files and to 
-        possibly allow changes to it by setting read_only False
-        
-        ``file_or_files``
-            A single file path or file objects or multiple of these
-        
-        ``read_only``
-            If True, the ConfigParser may only read the data , but not change it.
-            If False, only a single file path or file object may be given.
-        """
-        super(GitConfigParser, self).__init__()
-        # initialize base with ordered dictionaries to be sure we write the same 
-        # file back 
-        self._sections = OrderedDict()
-        self._defaults = OrderedDict()
-        
-        self._file_or_files = file_or_files
-        self._read_only = read_only
-        self._is_initialized = False
-        self._lock = None
-        
-        if not read_only:
-            if isinstance(file_or_files, (tuple, list)):
-                raise ValueError("Write-ConfigParsers can operate on a single file only, multiple files have been passed")
-            # END single file check
-            
-            if not isinstance(file_or_files, basestring):
-                file_or_files = file_or_files.name
-            # END get filename from handle/stream
-            # initialize lock base - we want to write
-            self._lock = self.t_lock(file_or_files)
-            
-            self._lock._obtain_lock()   
-        # END read-only check
-        
-    
-    def __del__(self):
-        """
-        Write pending changes if required and release locks
-        """
-        # checking for the lock here makes sure we do not raise during write()
-        # in case an invalid parser was created who could not get a lock
-        if self.read_only or not self._lock._has_lock():
-            return
-        
-        try:
-            try:
-                self.write()
-            except IOError,e:
-                print "Exception during destruction of GitConfigParser: %s" % str(e)
-        finally:
-            self._lock._release_lock()
-    
-    def optionxform(self, optionstr):
-        """
-        Do not transform options in any way when writing
-        """
-        return optionstr
-    
-    def _read(self, fp, fpname):
-        """
-        A direct copy of the py2.4 version of the super class's _read method
-        to assure it uses ordered dicts. Had to change one line to make it work.
-        
-        Future versions have this fixed, but in fact its quite embarassing for the 
-        guys not to have done it right in the first place !
-        
-        Removed big comments to make it more compact.
-        
-        Made sure it ignores initial whitespace as git uses tabs
-        """
-        cursect = None                            # None, or a dictionary
-        optname = None
-        lineno = 0
-        e = None                                  # None, or an exception
-        while True:
-            line = fp.readline()
-            if not line:
-                break
-            lineno = lineno + 1
-            # comment or blank line?
-            if line.strip() == '' or line[0] in '#;':
-                continue
-            if line.split(None, 1)[0].lower() == 'rem' and line[0] in "rR":
-                # no leading whitespace
-                continue
-            else:
-                # is it a section header?
-                mo = self.SECTCRE.match(line)
-                if mo:
-                    sectname = mo.group('header')
-                    if sectname in self._sections:
-                        cursect = self._sections[sectname]
-                    elif sectname == cp.DEFAULTSECT:
-                        cursect = self._defaults
-                    else:
-                        # THE ONLY LINE WE CHANGED !
-                        cursect = OrderedDict((('__name__', sectname),))
-                        self._sections[sectname] = cursect
-                    # So sections can't start with a continuation line
-                    optname = None
-                # no section header in the file?
-                elif cursect is None:
-                    raise cp.MissingSectionHeaderError(fpname, lineno, line)
-                # an option line?
-                else:
-                    mo = self.OPTCRE.match(line)
-                    if mo:
-                        optname, vi, optval = mo.group('option', 'vi', 'value')
-                        if vi in ('=', ':') and ';' in optval:
-                            pos = optval.find(';')
-                            if pos != -1 and optval[pos-1].isspace():
-                                optval = optval[:pos]
-                        optval = optval.strip()
-                        if optval == '""':
-                            optval = ''
-                        optname = self.optionxform(optname.rstrip())
-                        cursect[optname] = optval
-                    else:
-                        if not e:
-                            e = cp.ParsingError(fpname)
-                        e.append(lineno, repr(line))
-                    # END  
-                # END ? 
-            # END ?
-        # END while reading 
-        # if any parsing errors occurred, raise an exception
-        if e:
-            raise e
-    
-    
-    def read(self):
-        """
-        Reads the data stored in the files we have been initialized with. It will 
-        ignore files that cannot be read, possibly leaving an empty configuration
-        
-        Returns
-            Nothing
-        
-        Raises
-            IOError if a file cannot be handled
-        """
-        if self._is_initialized:
-            return
-            
-        
-        files_to_read = self._file_or_files
-        if not isinstance(files_to_read, (tuple, list)):
-            files_to_read = [ files_to_read ]
-        
-        for file_object in files_to_read:
-            fp = file_object
-            close_fp = False
-            # assume a path if it is not a file-object
-            if not hasattr(file_object, "seek"):
-                try:
-                    fp = open(file_object)
-                except IOError,e:
-                    continue
-                close_fp = True
-            # END fp handling
-                
-            try:
-                self._read(fp, fp.name)
-            finally:
-                if close_fp:
-                    fp.close()
-            # END read-handling
-        # END  for each file object to read
-        self._is_initialized = True
-        
-    def _write(self, fp):
-        """Write an .ini-format representation of the configuration state in 
-        git compatible format"""
-        def write_section(name, section_dict):
-            fp.write("[%s]\n" % name)
-            for (key, value) in section_dict.items():
-                if key != "__name__":
-                    fp.write("\t%s = %s\n" % (key, str(value).replace('\n', '\n\t')))
-                # END if key is not __name__
-        # END section writing 
-        
-        if self._defaults:
-            write_section(cp.DEFAULTSECT, self._defaults)
-        map(lambda t: write_section(t[0],t[1]), self._sections.items())
+	"""Implements specifics required to read git style configuration files.
+	
+	This variation behaves much like the git.config command such that the configuration
+	will be read on demand based on the filepath given during initialization.
+	
+	The changes will automatically be written once the instance goes out of scope, but 
+	can be triggered manually as well.
+	
+	The configuration file will be locked if you intend to change values preventing other 
+	instances to write concurrently.
+	
+	:note:
+		The config is case-sensitive even when queried, hence section and option names
+		must match perfectly."""
+	__metaclass__ = MetaParserBuilder
+	
+	
+	#{ Configuration
+	# The lock type determines the type of lock to use in new configuration readers.
+	# They must be compatible to the LockFile interface.
+	# A suitable alternative would be the BlockingLockFile
+	t_lock = LockFile
+	
+	#} END configuration 
+	
+	OPTCRE = re.compile(
+		r'\s?(?P<option>[^:=\s][^:=]*)'		  # very permissive, incuding leading whitespace
+		r'\s*(?P<vi>[:=])\s*'				  # any number of space/tab,
+											  # followed by separator
+											  # (either : or =), followed
+											  # by any # space/tab
+		r'(?P<value>.*)$'					  # everything up to eol
+		)
+	
+	# list of RawConfigParser methods able to change the instance
+	_mutating_methods_ = ("add_section", "remove_section", "remove_option", "set")
+	__slots__ = ("_sections", "_defaults", "_file_or_files", "_read_only","_is_initialized", '_lock')
+	
+	def __init__(self, file_or_files, read_only=True):
+		"""Initialize a configuration reader to read the given file_or_files and to 
+		possibly allow changes to it by setting read_only False
+		
+		:param file_or_files:
+			A single file path or file objects or multiple of these
+		
+		:param read_only:
+			If True, the ConfigParser may only read the data , but not change it.
+			If False, only a single file path or file object may be given."""
+		super(GitConfigParser, self).__init__()
+		# initialize base with ordered dictionaries to be sure we write the same 
+		# file back 
+		self._sections = OrderedDict()
+		self._defaults = OrderedDict()
+		
+		self._file_or_files = file_or_files
+		self._read_only = read_only
+		self._is_initialized = False
+		self._lock = None
+		
+		if not read_only:
+			if isinstance(file_or_files, (tuple, list)):
+				raise ValueError("Write-ConfigParsers can operate on a single file only, multiple files have been passed")
+			# END single file check
+			
+			if not isinstance(file_or_files, basestring):
+				file_or_files = file_or_files.name
+			# END get filename from handle/stream
+			# initialize lock base - we want to write
+			self._lock = self.t_lock(file_or_files)
+			
+			self._lock._obtain_lock()	
+		# END read-only check
+		
+	
+	def __del__(self):
+		"""Write pending changes if required and release locks"""
+		# checking for the lock here makes sure we do not raise during write()
+		# in case an invalid parser was created who could not get a lock
+		if self.read_only or not self._lock._has_lock():
+			return
+		
+		try:
+			try:
+				self.write()
+			except IOError,e:
+				print "Exception during destruction of GitConfigParser: %s" % str(e)
+		finally:
+			self._lock._release_lock()
+	
+	def optionxform(self, optionstr):
+		"""Do not transform options in any way when writing"""
+		return optionstr
+	
+	def _read(self, fp, fpname):
+		"""A direct copy of the py2.4 version of the super class's _read method
+		to assure it uses ordered dicts. Had to change one line to make it work.
+		
+		Future versions have this fixed, but in fact its quite embarassing for the 
+		guys not to have done it right in the first place !
+		
+		Removed big comments to make it more compact.
+		
+		Made sure it ignores initial whitespace as git uses tabs"""
+		cursect = None							  # None, or a dictionary
+		optname = None
+		lineno = 0
+		e = None								  # None, or an exception
+		while True:
+			line = fp.readline()
+			if not line:
+				break
+			lineno = lineno + 1
+			# comment or blank line?
+			if line.strip() == '' or line[0] in '#;':
+				continue
+			if line.split(None, 1)[0].lower() == 'rem' and line[0] in "rR":
+				# no leading whitespace
+				continue
+			else:
+				# is it a section header?
+				mo = self.SECTCRE.match(line)
+				if mo:
+					sectname = mo.group('header')
+					if sectname in self._sections:
+						cursect = self._sections[sectname]
+					elif sectname == cp.DEFAULTSECT:
+						cursect = self._defaults
+					else:
+						# THE ONLY LINE WE CHANGED !
+						cursect = OrderedDict((('__name__', sectname),))
+						self._sections[sectname] = cursect
+					# So sections can't start with a continuation line
+					optname = None
+				# no section header in the file?
+				elif cursect is None:
+					raise cp.MissingSectionHeaderError(fpname, lineno, line)
+				# an option line?
+				else:
+					mo = self.OPTCRE.match(line)
+					if mo:
+						optname, vi, optval = mo.group('option', 'vi', 'value')
+						if vi in ('=', ':') and ';' in optval:
+							pos = optval.find(';')
+							if pos != -1 and optval[pos-1].isspace():
+								optval = optval[:pos]
+						optval = optval.strip()
+						if optval == '""':
+							optval = ''
+						optname = self.optionxform(optname.rstrip())
+						cursect[optname] = optval
+					else:
+						if not e:
+							e = cp.ParsingError(fpname)
+						e.append(lineno, repr(line))
+					# END  
+				# END ? 
+			# END ?
+		# END while reading 
+		# if any parsing errors occurred, raise an exception
+		if e:
+			raise e
+	
+	
+	def read(self):
+		"""Reads the data stored in the files we have been initialized with. It will 
+		ignore files that cannot be read, possibly leaving an empty configuration
+		
+		:return: Nothing
+		:raise IOError: if a file cannot be handled"""
+		if self._is_initialized:
+			return
+			
+		files_to_read = self._file_or_files
+		if not isinstance(files_to_read, (tuple, list)):
+			files_to_read = [ files_to_read ]
+		
+		for file_object in files_to_read:
+			fp = file_object
+			close_fp = False
+			# assume a path if it is not a file-object
+			if not hasattr(file_object, "seek"):
+				try:
+					fp = open(file_object)
+				except IOError,e:
+					continue
+				close_fp = True
+			# END fp handling
+				
+			try:
+				self._read(fp, fp.name)
+			finally:
+				if close_fp:
+					fp.close()
+			# END read-handling
+		# END  for each file object to read
+		self._is_initialized = True
+		
+	def _write(self, fp):
+		"""Write an .ini-format representation of the configuration state in 
+		git compatible format"""
+		def write_section(name, section_dict):
+			fp.write("[%s]\n" % name)
+			for (key, value) in section_dict.items():
+				if key != "__name__":
+					fp.write("\t%s = %s\n" % (key, str(value).replace('\n', '\n\t')))
+				# END if key is not __name__
+		# END section writing 
+		
+		if self._defaults:
+			write_section(cp.DEFAULTSECT, self._defaults)
+		map(lambda t: write_section(t[0],t[1]), self._sections.items())
 
-        
-    @_needs_values
-    def write(self):
-        """
-        Write changes to our file, if there are changes at all
-        
-        Raise
-            IOError if this is a read-only writer instance or if we could not obtain 
-            a file lock
-        """
-        self._assure_writable("write")
-        self._lock._obtain_lock()
-        
-        
-        fp = self._file_or_files
-        close_fp = False
-        
-        if not hasattr(fp, "seek"):
-            fp = open(self._file_or_files, "w")
-            close_fp = True
-        else:
-            fp.seek(0)
-        
-        # WRITE DATA
-        try:
-            self._write(fp)
-        finally:
-            if close_fp:
-                fp.close()
-        # END data writing
-            
-        # we do not release the lock - it will be done automatically once the 
-        # instance vanishes
-        
-    def _assure_writable(self, method_name):
-        if self.read_only:
-            raise IOError("Cannot execute non-constant method %s.%s" % (self, method_name))
-        
-    @_needs_values
-    @_set_dirty_and_flush_changes
-    def add_section(self, section):
-        """
-        Assures added options will stay in order
-        """
-        super(GitConfigParser, self).add_section(section)
-        self._sections[section] = OrderedDict()
-        
-    @property
-    def read_only(self):
-        """
-        Returns
-            True if this instance may change the configuration file
-        """
-        return self._read_only
-        
-    def get_value(self, section, option, default = None):
-        """
-        ``default``
-            If not None, the given default value will be returned in case 
-            the option did not exist
-        Returns
-            a properly typed value, either int, float or string
-        Raises TypeError in case the value could not be understood
-        Otherwise the exceptions known to the ConfigParser will be raised.
-        """
-        try:
-            valuestr = self.get(section, option)
-        except Exception:
-            if default is not None:
-                return default
-            raise
-        
-        types = ( long, float )
-        for numtype in types:
-            try:
-                val = numtype( valuestr )
+		
+	@needs_values
+	def write(self):
+		"""Write changes to our file, if there are changes at all
+		
+		:raise IOError: if this is a read-only writer instance or if we could not obtain 
+			a file lock"""
+		self._assure_writable("write")
+		self._lock._obtain_lock()
+		
+		
+		fp = self._file_or_files
+		close_fp = False
+		
+		if not hasattr(fp, "seek"):
+			fp = open(self._file_or_files, "w")
+			close_fp = True
+		else:
+			fp.seek(0)
+		
+		# WRITE DATA
+		try:
+			self._write(fp)
+		finally:
+			if close_fp:
+				fp.close()
+		# END data writing
+			
+		# we do not release the lock - it will be done automatically once the 
+		# instance vanishes
+		
+	def _assure_writable(self, method_name):
+		if self.read_only:
+			raise IOError("Cannot execute non-constant method %s.%s" % (self, method_name))
+		
+	@needs_values
+	@set_dirty_and_flush_changes
+	def add_section(self, section):
+		"""Assures added options will stay in order"""
+		super(GitConfigParser, self).add_section(section)
+		self._sections[section] = OrderedDict()
+		
+	@property
+	def read_only(self):
+		""":return: True if this instance may change the configuration file"""
+		return self._read_only
+		
+	def get_value(self, section, option, default = None):
+		"""
+		:param default:
+			If not None, the given default value will be returned in case 
+			the option did not exist
+		:return: a properly typed value, either int, float or string
+		
+		:raise TypeError: in case the value could not be understood
+			Otherwise the exceptions known to the ConfigParser will be raised."""
+		try:
+			valuestr = self.get(section, option)
+		except Exception:
+			if default is not None:
+				return default
+			raise
+		
+		types = ( long, float )
+		for numtype in types:
+			try:
+				val = numtype( valuestr )
 
-                # truncated value ?
-                if val != float( valuestr ):
-                    continue
+				# truncated value ?
+				if val != float( valuestr ):
+					continue
 
-                return val
-            except (ValueError,TypeError):
-                continue
-        # END for each numeric type
-        
-        # try boolean values as git uses them
-        vl = valuestr.lower() 
-        if vl == 'false':
-            return False
-        if vl == 'true':
-            return True
-        
-        if not isinstance( valuestr, basestring ):
-            raise TypeError( "Invalid value type: only int, long, float and str are allowed", valuestr )
-        
-        return valuestr
-    
-    @_needs_values
-    @_set_dirty_and_flush_changes   
-    def set_value(self, section, option, value):
-        """Sets the given option in section to the given value.
-        It will create the section if required, and will not throw as opposed to the default 
-        ConfigParser 'set' method.
-        
-        ``section``
-            Name of the section in which the option resides or should reside
-            
-        ``option``
-            Name of the options whose value to set
-            
-        ``value``
-            Value to set the option to. It must be a string or convertible to a string
-        """
-        if not self.has_section(section):
-            self.add_section(section)
-        self.set(section, option, str(value))
+				return val
+			except (ValueError,TypeError):
+				continue
+		# END for each numeric type
+		
+		# try boolean values as git uses them
+		vl = valuestr.lower() 
+		if vl == 'false':
+			return False
+		if vl == 'true':
+			return True
+		
+		if not isinstance( valuestr, basestring ):
+			raise TypeError( "Invalid value type: only int, long, float and str are allowed", valuestr )
+		
+		return valuestr
+	
+	@needs_values
+	@set_dirty_and_flush_changes	
+	def set_value(self, section, option, value):
+		"""Sets the given option in section to the given value.
+		It will create the section if required, and will not throw as opposed to the default 
+		ConfigParser 'set' method.
+		
+		:param section: Name of the section in which the option resides or should reside
+		:param option: Name of the options whose value to set
+			
+		:param value: Value to set the option to. It must be a string or convertible 
+			to a string"""
+		if not self.has_section(section):
+			self.add_section(section)
+		self.set(section, option, str(value))
-- 
cgit v1.2.1