mirror of https://github.com/python/cpython
629 lines
25 KiB
Python
629 lines
25 KiB
Python
"""
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Provides access to stored idle configuration information.
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"""
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# Throughout this module there is an emphasis on returning useable defaults
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# when a problem occurs in returning a requested configuration value back to
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# idle. This is to allow idle to continue to function in spite of errors in
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# the retrieval of config information. When a default is returned instead of
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# a requested config value, a message is printed to stderr to aid in
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# configuration problem notification and resolution.
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import os, sys, string
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from ConfigParser import ConfigParser, NoOptionError, NoSectionError
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class InvalidConfigType(Exception): pass
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class InvalidConfigSet(Exception): pass
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class InvalidFgBg(Exception): pass
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class InvalidTheme(Exception): pass
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class IdleConfParser(ConfigParser):
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"""
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A ConfigParser specialised for idle configuration file handling
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"""
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def __init__(self, cfgFile, cfgDefaults=None):
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"""
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cfgFile - string, fully specified configuration file name
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"""
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self.file=cfgFile
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ConfigParser.__init__(self,defaults=cfgDefaults)
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def Get(self, section, option, type=None, default=None):
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"""
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Get an option value for given section/option or return default.
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If type is specified, return as type.
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"""
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if type=='bool':
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getVal=self.getboolean
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elif type=='int':
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getVal=self.getint
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else:
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getVal=self.get
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if self.has_option(section,option):
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#return getVal(section, option, raw, vars, default)
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return getVal(section, option)
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else:
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return default
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def GetOptionList(self,section):
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"""
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Get an option list for given section
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"""
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if self.has_section(section):
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return self.options(section)
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else: #return a default value
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return []
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def Load(self):
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"""
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Load the configuration file from disk
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"""
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self.read(self.file)
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class IdleUserConfParser(IdleConfParser):
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"""
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IdleConfigParser specialised for user configuration handling.
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"""
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def AddSection(self,section):
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"""
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if section doesn't exist, add it
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"""
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if not self.has_section(section):
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self.add_section(section)
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def RemoveEmptySections(self):
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"""
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remove any sections that have no options
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"""
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for section in self.sections():
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if not self.GetOptionList(section):
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self.remove_section(section)
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def IsEmpty(self):
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"""
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Remove empty sections and then return 1 if parser has no sections
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left, else return 0.
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"""
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self.RemoveEmptySections()
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if self.sections():
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return 0
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else:
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return 1
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def RemoveOption(self,section,option):
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"""
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If section/option exists, remove it.
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Returns 1 if option was removed, 0 otherwise.
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"""
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if self.has_section(section):
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return self.remove_option(section,option)
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def SetOption(self,section,option,value):
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"""
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Sets option to value, adding section if required.
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Returns 1 if option was added or changed, otherwise 0.
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"""
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if self.has_option(section,option):
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if self.get(section,option)==value:
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return 0
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else:
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self.set(section,option,value)
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return 1
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else:
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if not self.has_section(section):
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self.add_section(section)
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self.set(section,option,value)
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return 1
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def RemoveFile(self):
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"""
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Removes the user config file from disk if it exists.
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"""
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if os.path.exists(self.file):
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os.remove(self.file)
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def Save(self):
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"""
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If config isn't empty, write file to disk. If config is empty,
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remove the file from disk if it exists.
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"""
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if not self.IsEmpty():
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cfgFile=open(self.file,'w')
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self.write(cfgFile)
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else:
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self.RemoveFile()
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class IdleConf:
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"""
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holds config parsers for all idle config files:
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default config files
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(idle install dir)/config-main.def
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(idle install dir)/config-extensions.def
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(idle install dir)/config-highlight.def
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(idle install dir)/config-keys.def
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user config files
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(user home dir)/.idlerc/config-main.cfg
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(user home dir)/.idlerc/config-extensions.cfg
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(user home dir)/.idlerc/config-highlight.cfg
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(user home dir)/.idlerc/config-keys.cfg
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"""
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def __init__(self):
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self.defaultCfg={}
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self.userCfg={}
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self.cfg={}
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self.CreateConfigHandlers()
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self.LoadCfgFiles()
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#self.LoadCfg()
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def CreateConfigHandlers(self):
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"""
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set up a dictionary of config parsers for default and user
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configurations respectively
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"""
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#build idle install path
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if __name__ != '__main__': # we were imported
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idleDir=os.path.dirname(__file__)
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else: # we were exec'ed (for testing only)
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idleDir=os.path.abspath(sys.path[0])
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userDir=self.GetUserCfgDir()
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configTypes=('main','extensions','highlight','keys')
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defCfgFiles={}
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usrCfgFiles={}
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for cfgType in configTypes: #build config file names
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defCfgFiles[cfgType]=os.path.join(idleDir,'config-'+cfgType+'.def')
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usrCfgFiles[cfgType]=os.path.join(userDir,'config-'+cfgType+'.cfg')
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for cfgType in configTypes: #create config parsers
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self.defaultCfg[cfgType]=IdleConfParser(defCfgFiles[cfgType])
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self.userCfg[cfgType]=IdleUserConfParser(usrCfgFiles[cfgType])
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def GetUserCfgDir(self):
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"""
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Creates (if required) and returns a filesystem directory for storing
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user config files.
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"""
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cfgDir='.idlerc'
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userDir=os.path.expanduser('~')
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if userDir != '~': #'HOME' exists as a key in os.environ
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if not os.path.exists(userDir):
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warn=('\n Warning: HOME environment variable points to\n '+
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userDir+'\n but the path does not exist.\n')
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sys.stderr.write(warn)
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userDir='~'
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if userDir=='~': #we still don't have a home directory
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#traditionally idle has defaulted to os.getcwd(), is this adeqate?
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userDir = os.getcwd() #hack for no real homedir
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userDir=os.path.join(userDir,cfgDir)
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if not os.path.exists(userDir):
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try: #make the config dir if it doesn't exist yet
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os.mkdir(userDir)
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except IOError:
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warn=('\n Warning: unable to create user config directory\n '+
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userDir+'\n')
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sys.stderr.write(warn)
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return userDir
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def GetOption(self, configType, section, option, default=None, type=None):
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"""
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Get an option value for given config type and given general
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configuration section/option or return a default. If type is specified,
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return as type. Firstly the user configuration is checked, with a
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fallback to the default configuration, and a final 'catch all'
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fallback to a useable passed-in default if the option isn't present in
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either the user or the default configuration.
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configType must be one of ('main','extensions','highlight','keys')
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If a default is returned a warning is printed to stderr.
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"""
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if self.userCfg[configType].has_option(section,option):
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return self.userCfg[configType].Get(section, option, type=type)
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elif self.defaultCfg[configType].has_option(section,option):
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return self.defaultCfg[configType].Get(section, option, type=type)
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else: #returning default, print warning
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warning=('\n Warning: configHandler.py - IdleConf.GetOption -\n'+
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' problem retrieving configration option '+`option`+'\n'+
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' from section '+`section`+'.\n'+
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' returning default value: '+`default`+'\n')
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sys.stderr.write(warning)
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return default
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def GetSectionList(self, configSet, configType):
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"""
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Get a list of sections from either the user or default config for
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the given config type.
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configSet must be either 'user' or 'default'
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configType must be one of ('main','extensions','highlight','keys')
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"""
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if not (configType in ('main','extensions','highlight','keys')):
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raise InvalidConfigType, 'Invalid configType specified'
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if configSet == 'user':
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cfgParser=self.userCfg[configType]
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elif configSet == 'default':
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cfgParser=self.defaultCfg[configType]
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else:
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raise InvalidConfigSet, 'Invalid configSet specified'
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return cfgParser.sections()
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def GetHighlight(self, theme, element, fgBg=None):
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"""
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return individual highlighting theme elements.
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fgBg - string ('fg'or'bg') or None, if None return a dictionary
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containing fg and bg colours (appropriate for passing to Tkinter in,
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e.g., a tag_config call), otherwise fg or bg colour only as specified.
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"""
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if self.defaultCfg['highlight'].has_section(theme):
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themeDict=self.GetThemeDict('default',theme)
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else:
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themeDict=self.GetThemeDict('user',theme)
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fore=themeDict[element+'-foreground']
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if element=='cursor': #there is no config value for cursor bg
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back=themeDict['normal-background']
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else:
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back=themeDict[element+'-background']
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highlight={"foreground": fore,"background": back}
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if not fgBg: #return dict of both colours
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return highlight
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else: #return specified colour only
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if fgBg == 'fg':
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return highlight["foreground"]
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if fgBg == 'bg':
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return highlight["background"]
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else:
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raise InvalidFgBg, 'Invalid fgBg specified'
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def GetThemeDict(self,type,themeName):
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"""
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type - string, 'default' or 'user' theme type
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themeName - string, theme name
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Returns a dictionary which holds {option:value} for each element
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in the specified theme. Values are loaded over a set of ultimate last
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fallback defaults to guarantee that all theme elements are present in
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a newly created theme.
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"""
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if type == 'user':
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cfgParser=self.userCfg['highlight']
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elif type == 'default':
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cfgParser=self.defaultCfg['highlight']
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else:
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raise InvalidTheme, 'Invalid theme type specified'
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#foreground and background values are provded for each theme element
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#(apart from cursor) even though all these values are not yet used
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#by idle, to allow for their use in the future. Default values are
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#generally black and white.
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theme={ 'normal-foreground':'#000000',
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'normal-background':'#ffffff',
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'keyword-foreground':'#000000',
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'keyword-background':'#ffffff',
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'comment-foreground':'#000000',
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'comment-background':'#ffffff',
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'string-foreground':'#000000',
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'string-background':'#ffffff',
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'definition-foreground':'#000000',
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'definition-background':'#ffffff',
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'hilite-foreground':'#000000',
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'hilite-background':'gray',
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'break-foreground':'#ffffff',
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'break-background':'#000000',
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'hit-foreground':'#ffffff',
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'hit-background':'#000000',
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'error-foreground':'#ffffff',
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'error-background':'#000000',
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#cursor (only foreground can be set)
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'cursor-foreground':'#000000',
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#shell window
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'stdout-foreground':'#000000',
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'stdout-background':'#ffffff',
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'stderr-foreground':'#000000',
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'stderr-background':'#ffffff',
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'console-foreground':'#000000',
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'console-background':'#ffffff' }
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for element in theme.keys():
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if not cfgParser.has_option(themeName,element):
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#we are going to return a default, print warning
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warning=('\n Warning: configHandler.py - IdleConf.GetThemeDict'+
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' -\n problem retrieving theme element '+`element`+
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'\n from theme '+`themeName`+'.\n'+
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' returning default value: '+`theme[element]`+'\n')
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sys.stderr.write(warning)
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colour=cfgParser.Get(themeName,element,default=theme[element])
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theme[element]=colour
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return theme
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def CurrentTheme(self):
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"""
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Returns the name of the currently active theme
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"""
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return self.GetOption('main','Theme','name',default='')
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def CurrentKeys(self):
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"""
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Returns the name of the currently active key set
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"""
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return self.GetOption('main','Keys','name',default='')
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def GetExtensions(self, activeOnly=1):
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"""
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Gets a list of all idle extensions declared in the config files.
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activeOnly - boolean, if true only return active (enabled) extensions
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"""
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extns=self.RemoveKeyBindNames(
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self.GetSectionList('default','extensions'))
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userExtns=self.RemoveKeyBindNames(
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self.GetSectionList('user','extensions'))
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for extn in userExtns:
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if extn not in extns: #user has added own extension
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extns.append(extn)
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if activeOnly:
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activeExtns=[]
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for extn in extns:
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if self.GetOption('extensions',extn,'enable',default=1,
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type='bool'):
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#the extension is enabled
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activeExtns.append(extn)
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return activeExtns
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else:
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return extns
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def RemoveKeyBindNames(self,extnNameList):
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#get rid of keybinding section names
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names=extnNameList
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kbNameIndicies=[]
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for name in names:
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if name.endswith('_bindings') or name.endswith('_cfgBindings'):
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kbNameIndicies.append(names.index(name))
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kbNameIndicies.sort()
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kbNameIndicies.reverse()
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for index in kbNameIndicies: #delete each keybinding section name
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del(names[index])
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return names
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def GetExtnNameForEvent(self,virtualEvent):
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"""
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Returns the name of the extension that virtualEvent is bound in, or
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None if not bound in any extension.
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virtualEvent - string, name of the virtual event to test for, without
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the enclosing '<< >>'
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"""
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extName=None
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vEvent='<<'+virtualEvent+'>>'
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for extn in self.GetExtensions(activeOnly=0):
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for event in self.GetExtensionKeys(extn).keys():
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if event == vEvent:
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extName=extn
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return extName
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def GetExtensionKeys(self,extensionName):
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"""
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returns a dictionary of the configurable keybindings for a particular
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extension,as they exist in the dictionary returned by GetCurrentKeySet;
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that is, where previously used bindings are disabled.
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"""
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keysName=extensionName+'_cfgBindings'
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activeKeys=self.GetCurrentKeySet()
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extKeys={}
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if self.defaultCfg['extensions'].has_section(keysName):
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eventNames=self.defaultCfg['extensions'].GetOptionList(keysName)
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for eventName in eventNames:
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event='<<'+eventName+'>>'
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binding=activeKeys[event]
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extKeys[event]=binding
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return extKeys
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def __GetRawExtensionKeys(self,extensionName):
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"""
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returns a dictionary of the configurable keybindings for a particular
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extension, as defined in the configuration files, or an empty dictionary
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if no bindings are found
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"""
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keysName=extensionName+'_cfgBindings'
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extKeys={}
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if self.defaultCfg['extensions'].has_section(keysName):
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eventNames=self.defaultCfg['extensions'].GetOptionList(keysName)
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for eventName in eventNames:
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binding=self.GetOption('extensions',keysName,
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eventName,default='').split()
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event='<<'+eventName+'>>'
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extKeys[event]=binding
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return extKeys
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def GetExtensionBindings(self,extensionName):
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"""
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Returns a dictionary of all the event bindings for a particular
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extension. The configurable keybindings are returned as they exist in
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the dictionary returned by GetCurrentKeySet; that is, where re-used
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keybindings are disabled.
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"""
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bindsName=extensionName+'_bindings'
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extBinds=self.GetExtensionKeys(extensionName)
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#add the non-configurable bindings
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if self.defaultCfg['extensions'].has_section(bindsName):
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eventNames=self.defaultCfg['extensions'].GetOptionList(bindsName)
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for eventName in eventNames:
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binding=self.GetOption('extensions',bindsName,
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eventName,default='').split()
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event='<<'+eventName+'>>'
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extBinds[event]=binding
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return extBinds
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def GetKeyBinding(self, keySetName, eventStr):
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"""
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returns the keybinding for a specific event.
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keySetName - string, name of key binding set
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eventStr - string, the virtual event we want the binding for,
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represented as a string, eg. '<<event>>'
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"""
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eventName=eventStr[2:-2] #trim off the angle brackets
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binding=self.GetOption('keys',keySetName,eventName,default='').split()
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return binding
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def GetCurrentKeySet(self):
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return self.GetKeySet(self.CurrentKeys())
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def GetKeySet(self,keySetName):
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"""
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Returns a dictionary of: all requested core keybindings, plus the
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keybindings for all currently active extensions. If a binding defined
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in an extension is already in use, that binding is disabled.
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"""
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keySet=self.GetCoreKeys(keySetName)
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activeExtns=self.GetExtensions(activeOnly=1)
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for extn in activeExtns:
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extKeys=self.__GetRawExtensionKeys(extn)
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if extKeys: #the extension defines keybindings
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for event in extKeys.keys():
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if extKeys[event] in keySet.values():
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#the binding is already in use
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extKeys[event]='' #disable this binding
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keySet[event]=extKeys[event] #add binding
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return keySet
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def IsCoreBinding(self,virtualEvent):
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"""
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returns true if the virtual event is bound in the core idle keybindings.
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virtualEvent - string, name of the virtual event to test for, without
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the enclosing '<< >>'
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"""
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return ('<<'+virtualEvent+'>>') in self.GetCoreKeys().keys()
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def GetCoreKeys(self, keySetName=None):
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"""
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returns the requested set of core keybindings, with fallbacks if
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required.
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Keybindings loaded from the config file(s) are loaded _over_ these
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defaults, so if there is a problem getting any core binding there will
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be an 'ultimate last resort fallback' to the CUA-ish bindings
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defined here.
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"""
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keyBindings={
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'<<copy>>': ['<Control-c>', '<Control-C>'],
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'<<cut>>': ['<Control-x>', '<Control-X>'],
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'<<paste>>': ['<Control-v>', '<Control-V>'],
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'<<beginning-of-line>>': ['<Control-a>', '<Home>'],
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'<<center-insert>>': ['<Control-l>'],
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'<<close-all-windows>>': ['<Control-q>'],
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'<<close-window>>': ['<Alt-F4>'],
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'<<do-nothing>>': ['<Control-x>'],
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'<<end-of-file>>': ['<Control-d>'],
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|
'<<python-docs>>': ['<F1>'],
|
|
'<<python-context-help>>': ['<Shift-F1>'],
|
|
'<<history-next>>': ['<Alt-n>'],
|
|
'<<history-previous>>': ['<Alt-p>'],
|
|
'<<interrupt-execution>>': ['<Control-c>'],
|
|
'<<open-class-browser>>': ['<Alt-c>'],
|
|
'<<open-module>>': ['<Alt-m>'],
|
|
'<<open-new-window>>': ['<Control-n>'],
|
|
'<<open-window-from-file>>': ['<Control-o>'],
|
|
'<<plain-newline-and-indent>>': ['<Control-j>'],
|
|
'<<print-window>>': ['<Control-p>'],
|
|
'<<redo>>': ['<Control-y>'],
|
|
'<<remove-selection>>': ['<Escape>'],
|
|
'<<save-copy-of-window-as-file>>': ['<Alt-Shift-s>'],
|
|
'<<save-window-as-file>>': ['<Alt-s>'],
|
|
'<<save-window>>': ['<Control-s>'],
|
|
'<<select-all>>': ['<Alt-a>'],
|
|
'<<toggle-auto-coloring>>': ['<Control-slash>'],
|
|
'<<undo>>': ['<Control-z>'],
|
|
'<<find-again>>': ['<Control-g>', '<F3>'],
|
|
'<<find-in-files>>': ['<Alt-F3>'],
|
|
'<<find-selection>>': ['<Control-F3>'],
|
|
'<<find>>': ['<Control-f>'],
|
|
'<<replace>>': ['<Control-h>'],
|
|
'<<goto-line>>': ['<Alt-g>'],
|
|
'<<smart-backspace>>': ['<Key-BackSpace>'],
|
|
'<<newline-and-indent>>': ['<Key-Return> <Key-KP_Enter>'],
|
|
'<<smart-indent>>': ['<Key-Tab>'],
|
|
'<<indent-region>>': ['<Control-Key-bracketright>'],
|
|
'<<dedent-region>>': ['<Control-Key-bracketleft>'],
|
|
'<<comment-region>>': ['<Alt-Key-3>'],
|
|
'<<uncomment-region>>': ['<Alt-Key-4>'],
|
|
'<<tabify-region>>': ['<Alt-Key-5>'],
|
|
'<<untabify-region>>': ['<Alt-Key-6>'],
|
|
'<<toggle-tabs>>': ['<Alt-Key-t>'],
|
|
'<<change-indentwidth>>': ['<Alt-Key-u>']
|
|
}
|
|
if keySetName:
|
|
for event in keyBindings.keys():
|
|
binding=self.GetKeyBinding(keySetName,event)
|
|
if binding:
|
|
keyBindings[event]=binding
|
|
else: #we are going to return a default, print warning
|
|
warning=('\n Warning: configHandler.py - IdleConf.GetCoreKeys'+
|
|
' -\n problem retrieving key binding for event '+
|
|
`event`+'\n from key set '+`keySetName`+'.\n'+
|
|
' returning default value: '+`keyBindings[event]`+'\n')
|
|
sys.stderr.write(warning)
|
|
return keyBindings
|
|
|
|
def GetExtraHelpSourceList(self,configSet):
|
|
"""
|
|
Returns a list of tuples containing the details of any additional
|
|
help sources configured in the requested configSet ('user' or 'default')
|
|
, or an empty list if there are none. Returned tuples are of the form
|
|
form (menu_item , path_to_help_file , option).
|
|
"""
|
|
helpSources=[]
|
|
if configSet=='user':
|
|
cfgParser=self.userCfg['main']
|
|
elif configSet=='default':
|
|
cfgParser=self.defaultCfg['main']
|
|
else:
|
|
raise InvalidConfigSet, 'Invalid configSet specified'
|
|
options=cfgParser.GetOptionList('HelpFiles')
|
|
for option in options:
|
|
value=cfgParser.Get('HelpFiles',option,default=';')
|
|
if value.find(';')==-1: #malformed config entry with no ';'
|
|
menuItem='' #make these empty
|
|
helpPath='' #so value won't be added to list
|
|
else: #config entry contains ';' as expected
|
|
value=string.split(value,';')
|
|
menuItem=value[0].strip()
|
|
helpPath=value[1].strip()
|
|
if menuItem and helpPath: #neither are empty strings
|
|
helpSources.append( (menuItem,helpPath,option) )
|
|
return helpSources
|
|
|
|
def GetAllExtraHelpSourcesList(self):
|
|
"""
|
|
Returns a list of tuples containing the details of all additional help
|
|
sources configured, or an empty list if there are none. Tuples are of
|
|
the format returned by GetExtraHelpSourceList.
|
|
"""
|
|
allHelpSources=( self.GetExtraHelpSourceList('default')+
|
|
self.GetExtraHelpSourceList('user') )
|
|
return allHelpSources
|
|
|
|
def LoadCfgFiles(self):
|
|
"""
|
|
load all configuration files.
|
|
"""
|
|
for key in self.defaultCfg.keys():
|
|
self.defaultCfg[key].Load()
|
|
self.userCfg[key].Load() #same keys
|
|
|
|
def SaveUserCfgFiles(self):
|
|
"""
|
|
write all loaded user configuration files back to disk
|
|
"""
|
|
for key in self.userCfg.keys():
|
|
self.userCfg[key].Save()
|
|
|
|
idleConf=IdleConf()
|
|
|
|
### module test
|
|
if __name__ == '__main__':
|
|
def dumpCfg(cfg):
|
|
print '\n',cfg,'\n'
|
|
for key in cfg.keys():
|
|
sections=cfg[key].sections()
|
|
print key
|
|
print sections
|
|
for section in sections:
|
|
options=cfg[key].options(section)
|
|
print section
|
|
print options
|
|
for option in options:
|
|
print option, '=', cfg[key].Get(section,option)
|
|
dumpCfg(idleConf.defaultCfg)
|
|
dumpCfg(idleConf.userCfg)
|
|
print idleConf.userCfg['main'].Get('Theme','name')
|
|
#print idleConf.userCfg['highlight'].GetDefHighlight('Foo','normal')
|