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ParseXKB.py
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#!/usr/bin/env python
# -*- encoding: UTF-8 -*-
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>
import sys
import os.path
import string
import antlr3
import re
import copy
from lxml import etree
try:
from XKBGrammarLexer import XKBGrammarLexer
from XKBGrammarParser import XKBGrammarParser
from XKBGrammarWalker import XKBGrammarWalker, LAYOUT, SYMBOLS, MAPMATERIAL, MAPTYPE, MAPOPTIONS, MAPOPTS, MAPNAME, TOKEN_INCLUDE, TOKEN_NAME, TOKEN_KEY_TYPE, TOKEN_KEY, TOKEN_TYPE, TOKEN_MODIFIER_MAP, TOKEN_VIRTUAL_MODIFIERS, KEYCODE, KEYCODEX, ELEM_KEYSYMS, ELEM_KEYSYMGROUP, ELEM_VIRTUALMODS, OVERLAY, VALUE, STATE, NAME, DQSTRING, OVERRIDE
except ImportError, e:
raise SystemExit("A generated source file by ANTLR was not found.\nSee the README on how to generate.\nImport error: " + str(e))
import KeycodesReader
import KeysymsUni
import Common
from ParseXML import ExtractVariantsKeycodes
class ParseXKB:
def __init__(self):
KeycodesReader.initialise()
# Sorts a dictionary by value, produces a sorted list of values.
def sortDict(self, adict, cmp_function = None):
keys = adict.keys()
keys.sort(cmp_function)
return map(adict.get, keys)
# Helper function to iterate through all children of a given type
def getChildrenByType(self, tree, type_value):
for i in range(tree.getChildCount()):
child = tree.getChild(i)
if child.getType() == type_value:
yield child
# Helper function to iterate through all children of a given type
def getChildrenByTypes(self, tree, type_value1, type_value2):
for i in range(tree.getChildCount()):
child = tree.getChild(i)
if child.getType() == type_value1 or child.getType() == type_value2:
yield child
# Helper function to iterate through all children of a given type
def getChildrenListByType(self, tree, type_value):
list = []
for i in range(tree.getChildCount()):
child = tree.getChild(i)
if child.getType() == type_value:
list.append(child)
return list
# Helper function to iterate through all children of a given type
def getChildrenListByTypes(self, tree, type_value1, type_value2):
list = []
for i in range(tree.getChildCount()):
child = tree.getChild(i)
if child.getType() == type_value1 or child.getType() == type_value2:
list.append(child)
return list
def hasChildByType(self, tree, type_value):
has = False
for i in range(tree.getChildCount()):
child = tree.getChild(i)
if child.getType() == type_value:
has = True
break
return has
def parse(self, xkbfilename):
char_stream = antlr3.ANTLRFileStream(xkbfilename, encoding='utf-8')
lexer = XKBGrammarLexer(char_stream)
tokens = antlr3.CommonTokenStream(lexer)
parser = XKBGrammarParser(tokens)
result = parser.layout()
# print "tree =", result.tree.toStringTree()
nodes = antlr3.tree.CommonTreeNodeStream(result.tree)
nodes.setTokenStream(tokens)
walker = XKBGrammarWalker(nodes)
# walker.layout()
layout = etree.Element('layout')
doc = etree.ElementTree(layout)
layout.attrib['layoutname'] = os.path.basename(xkbfilename)
#print "Processing", os.path.basename(xkbfilename), "...",
for symbols in result.tree.getChildren():
eSymbol = etree.SubElement(layout, 'symbols')
for mapobject in symbols.getChildren():
if mapobject.getType() == MAPTYPE:
for maptypesect in mapobject.getChildren():
if maptypesect.getType() == MAPOPTIONS:
for mapoption in maptypesect.getChildren():
if mapoption.getText() == 'xkb_symbols' or mapoption.getText() == 'hidden':
eMapOption = etree.SubElement(eSymbol, 'mapoption')
eMapOption.text = mapoption.getText()
elif maptypesect.getType() == MAPNAME:
if maptypesect.getChildCount() == 1:
eMapName = etree.SubElement(eSymbol, 'mapname')
eMapName.text = maptypesect.getChildren()[0].getText()[1:-1]
else:
print "\t\t\tInternal error in mapoption"
else:
print "\t\tInternal error in maptypesect"
sys.exit(-2)
elif mapobject.getType() == MAPMATERIAL:
eMapMaterial = etree.SubElement(eSymbol, 'mapmaterial')
for name in self.getChildrenByType(mapobject, TOKEN_NAME):
nameText = name.getChild(0).getText()[1:-1]
eTokenName = etree.SubElement(eMapMaterial, 'tokenname', name=nameText )
for include in self.getChildrenByType(mapobject, TOKEN_INCLUDE):
eInclude = etree.SubElement(eMapMaterial, 'tokeninclude')
eInclude.text = include.getChild(0).getText()[1:-1]
for keytype in self.getChildrenByType(mapobject, TOKEN_KEY_TYPE):
keytypeText = keytype.getChild(0).getText()
eKeyType = etree.SubElement(eMapMaterial, 'tokentype')
eKeyType.text = keytypeText[1:-1]
for modmap in self.getChildrenByType(mapobject, TOKEN_MODIFIER_MAP):
eModMap = etree.SubElement(eMapMaterial, 'tokenmodifiermap', state=modmap.getChild(0).getText())
for modstate in self.getChildrenByTypes(modmap, KEYCODE, KEYCODEX):
if modstate.getType() == KEYCODE:
eModState = etree.SubElement(eModMap, "keycode", value=modstate.getChild(0).getText())
elif modstate.getType() == KEYCODEX:
eModState = etree.SubElement(eModMap, "keycodex", value=modstate.getChild(0).getText())
else:
print "Unexpected token encountered. Aborting...", modstate.getText()
sys.exit(-1)
allkeysymgroups = {}
for keyset in self.getChildrenByType(mapobject, TOKEN_KEY):
allkeysymgroups[keyset.getChild(0).getChild(0).getText()] = keyset
sortedkeysymgroups = self.sortDict(allkeysymgroups, KeycodesReader.compare_keycode)
for keyset in sortedkeysymgroups:
elem_keysymgroup = self.getChildrenByType(keyset, ELEM_KEYSYMGROUP)
elem_virtualmods = self.getChildrenByType(keyset, ELEM_VIRTUALMODS)
elem_overlay = self.getChildrenByType(keyset, OVERLAY)
override = self.getChildrenListByType(keyset, OVERRIDE)
eTokenKey = etree.SubElement(eMapMaterial, 'tokenkey')
eKeyCodeName = etree.SubElement(eTokenKey, 'keycodename')
keycodex = self.getChildrenListByType(keyset, KEYCODEX)
if len(keycodex) == 1:
eKeyCodeName.text = keycodex[0].getChild(0).getText()
else:
print "Could not retrieve keycode name"
exit(-1)
if len(override) == 1:
eTokenKey.attrib['override'] = "True"
else:
eTokenKey.attrib['override'] = "False"
if len(self.getChildrenListByType(keyset, ELEM_KEYSYMGROUP)):
elem_keysyms = self.getChildrenListByType(keyset, ELEM_KEYSYMS)
eKeySymGroup = etree.SubElement(eTokenKey, 'keysymgroup')
keysymgroup_counter = len(self.getChildrenListByType(keyset, ELEM_KEYSYMGROUP))
for elem in elem_keysymgroup:
eSymbolsGroup = etree.SubElement(eKeySymGroup, 'symbolsgroup')
for elem2 in elem.getChildren():
for elem3 in elem2.getChildren():
eSymbol = etree.SubElement(eSymbolsGroup, 'symbol')
eSymbol.text = elem3.getText()
if len(elem_keysyms) > 0:
if len(elem_keysyms) == 1:
ksname = elem_keysyms[0].getChild(0).getText()
eKeySyms = etree.SubElement(eKeySymGroup, 'typegroup', value=ksname[1:-1])
else:
""" We are probably processing level3; we keep first item """
ksname = elem_keysyms[0].getChild(0).getText()
eKeySyms = etree.SubElement(eKeySymGroup, 'typegroup', value=ksname[1:-1])
#print "Possibly processing level3"
if len(self.getChildrenListByType(keyset, ELEM_VIRTUALMODS)):
for vmods in elem_virtualmods:
etree.SubElement(eKeySymGroup, 'tokenvirtualmodifiers', value=vmods.getChild(0).getText())
if len(self.getChildrenListByType(keyset, OVERLAY)):
for elem in elem_overlay:
for elem2 in self.getChildrenByType(elem, KEYCODEX):
pass
else:
print "\tInternal error at map level,", mapobject.getText()
# sys.exit(-2)
return layout
def parse_layout(self, xkbfilename, variant = None):
char_stream = antlr3.ANTLRFileStream(xkbfilename, encoding='utf-8')
lexer = XKBGrammarLexer(char_stream)
tokens = antlr3.CommonTokenStream(lexer)
parser = XKBGrammarParser(tokens)
result = parser.layout()
variants = []
layout = etree.Element('layout')
layout.attrib['layoutname'] = os.path.basename(xkbfilename)
#print "Processing", os.path.basename(xkbfilename), "...",
for symbols in result.tree.getChildren():
eSymbol = etree.SubElement(layout, 'symbols')
for mapobject in symbols.getChildren():
if mapobject.getType() == MAPTYPE:
for maptypesect in mapobject.getChildren():
if maptypesect.getType() == MAPOPTIONS:
for mapoption in maptypesect.getChildren():
if mapoption.getText() == 'xkb_symbols' or mapoption.getText() == 'hidden':
eMapOption = etree.SubElement(eSymbol, 'mapoption')
eMapOption.text = mapoption.getText()
elif maptypesect.getType() == MAPNAME:
if maptypesect.getChildCount() == 1:
eMapName = etree.SubElement(eSymbol, 'mapname')
eMapName.text = maptypesect.getChildren()[0].getText()[1:-1]
variants.append(maptypesect.getChildren()[0].getText()[1:-1])
else:
return { "success": False }
#print "\t\t\tInternal error in mapoption"
else:
return { "success": False }
#print "\t\tInternal error in maptypesect"
#sys.exit(-2)
elif mapobject.getType() == MAPMATERIAL:
eMapMaterial = etree.SubElement(eSymbol, 'mapmaterial')
for name in self.getChildrenByType(mapobject, TOKEN_NAME):
nameText = name.getChild(0).getText()[1:-1]
eTokenName = etree.SubElement(eMapMaterial, 'tokenname', name=nameText )
for include in self.getChildrenByType(mapobject, TOKEN_INCLUDE):
eInclude = etree.SubElement(eMapMaterial, 'tokeninclude')
eInclude.text = include.getChild(0).getText()[1:-1]
for keytype in self.getChildrenByType(mapobject, TOKEN_KEY_TYPE):
keytypeText = keytype.getChild(0).getText()
eKeyType = etree.SubElement(eMapMaterial, 'tokentype')
eKeyType.text = keytypeText[1:-1]
for modmap in self.getChildrenByType(mapobject, TOKEN_MODIFIER_MAP):
eModMap = etree.SubElement(eMapMaterial, 'tokenmodifiermap', state=modmap.getChild(0).getText())
for modstate in self.getChildrenByTypes(modmap, KEYCODE, KEYCODEX):
if modstate.getType() == KEYCODE:
eModState = etree.SubElement(eModMap, "keycode", value=modstate.getChild(0).getText())
elif modstate.getType() == KEYCODEX:
eModState = etree.SubElement(eModMap, "keycodex", value=modstate.getChild(0).getText())
else:
return { "success": False }
# print "Unexpected token encountered. Aborting...", modstate.getText()
# sys.exit(-1)
allkeysymgroups = {}
for keyset in self.getChildrenByType(mapobject, TOKEN_KEY):
try:
allkeysymgroups[keyset.getChild(0).getChild(0).getText()] = keyset
except AttributeError:
print "Error setting keyset:", keyset
sortedkeysymgroups = self.sortDict(allkeysymgroups, KeycodesReader.compare_keycode)
for keyset in sortedkeysymgroups:
elem_keysymgroup = self.getChildrenByType(keyset, ELEM_KEYSYMGROUP)
elem_virtualmods = self.getChildrenByType(keyset, ELEM_VIRTUALMODS)
elem_overlay = self.getChildrenByType(keyset, OVERLAY)
override = self.getChildrenListByType(keyset, OVERRIDE)
eTokenKey = etree.SubElement(eMapMaterial, 'tokenkey')
eKeyCodeName = etree.SubElement(eTokenKey, 'keycodename')
keycodex = self.getChildrenListByType(keyset, KEYCODEX)
if len(keycodex) == 1:
eKeyCodeName.text = keycodex[0].getChild(0).getText()
else:
return { "success": False }
#print "Could not retrieve keycode name"
#exit(-1)
if len(override) == 1:
eTokenKey.attrib['override'] = "True"
else:
eTokenKey.attrib['override'] = "False"
if len(self.getChildrenListByType(keyset, ELEM_KEYSYMGROUP)):
elem_keysyms = self.getChildrenListByType(keyset, ELEM_KEYSYMS)
eKeySymGroup = etree.SubElement(eTokenKey, 'keysymgroup')
keysymgroup_counter = len(self.getChildrenListByType(keyset, ELEM_KEYSYMGROUP))
for elem in elem_keysymgroup:
eSymbolsGroup = etree.SubElement(eKeySymGroup, 'symbolsgroup')
for elem2 in elem.getChildren():
for elem3 in elem2.getChildren():
eSymbol = etree.SubElement(eSymbolsGroup, 'symbol')
eSymbol.text = elem3.getText()
if len(elem_keysyms) > 0:
if len(elem_keysyms) == 1:
ksname = elem_keysyms[0].getChild(0).getText()
eKeySyms = etree.SubElement(eKeySymGroup, 'typegroup', value=ksname[1:-1])
else:
""" We are probably processing level3; we keep first item """
ksname = elem_keysyms[0].getChild(0).getText()
eKeySyms = etree.SubElement(eKeySymGroup, 'typegroup', value=ksname[1:-1])
#print "Possibly processing level3"
if len(self.getChildrenListByType(keyset, ELEM_VIRTUALMODS)):
for vmods in elem_virtualmods:
etree.SubElement(eKeySymGroup, 'tokenvirtualmodifiers', value=vmods.getChild(0).getText())
if len(self.getChildrenListByType(keyset, OVERLAY)):
for elem in elem_overlay:
for elem2 in self.getChildrenByType(elem, KEYCODEX):
pass
else:
return { "success": False }
#print "\tInternal error at map level,", mapobject.getText()
# sys.exit(-2)
return { "success": True, "variants": variants, "layout": layout }
################################################################################
# xkb_symbols "basic" {
# name[Group1]= "USA";
# include "latin"
# include "kpdl(comma)
# include "level3(ralt_switch)"
#
# // Alphanumeric section
# key <TLDE> { [ grave, asciitilde ] };
# key <AE01> { [ 1, exclam ] };
# key <AE02> { [ 2, at ] };
# };
# Algorigth
# 1. Collect include statements
# 2. Parse include files
#
def parse_layout_controller(self, store_keydict, xkbfilename, variantname = None):
self.parse_layout_recursive(store_keydict, xkbfilename, variantname, start = True)
return store_keydict
def parse_layout_recursive(self, store_keydict, xkbfilename, variantname = None, start = True):
#print "Processing", os.path.basename(xkbfilename), "..."
parsed_layout = self.parse_layout_slave(xkbfilename, variantname)
#print "############# ", xkbfilename, variantname, "Looping for", parsed_layout['variants']
for includefile in parsed_layout['variants']:
#print " Doing includefile:", includefile
include_components = Common.parseIncludeString(includefile)
if include_components['variant'] == '':
#print " variant was empty",
include_parse_result = self.parse_layout(xkbfilename)
include_components['variant'] = include_parse_result["variants"][0]
#print " we fix to", include_components
#print " Calling ourselves", Common.symbolsdir + include_components['filename'], include_components['variant']
new_parsed_layout = self.parse_layout_recursive(store_keydict,
Common.symbolsdir + include_components['filename'],
include_components['variant'],
True)
#print " new_parsed_result for variantname", include_components['variant'], " is ", new_parsed_layout
if new_parsed_layout.has_key('keydict'):
#print " LINES:", len(new_parsed_layout['keydict'].keys())
for k in new_parsed_layout['keydict'].keys():
for i in parsed_layout['keydict'][k].keys():
#print parsed_layout['keydict'][k][i].getPValue(),
if store_keydict.has_key(k) == False:
store_keydict[k] = {}
store_keydict[k][i] = copy.copy(new_parsed_layout['keydict'][k][i])
#print
#extraction_result = ExtractVariantsKeycodes(parsed_layout['layout'], variantname)
if start == True:
#print "parsed_result for variantname", variantname, " is ", parsed_layout
if parsed_layout.has_key('keydict'):
#print " LINES:", len(parsed_layout['keydict'].keys())
for k in parsed_layout['keydict'].keys():
#print k,
for i in parsed_layout['keydict'][k].keys():
#print parsed_layout['keydict'][k][i].getPValue(),
if store_keydict.has_key(k) == False:
store_keydict[k] = {}
store_keydict[k][i] = copy.copy(parsed_layout['keydict'][k][i])
#print
return { 'success': True, 'layout': parsed_layout['layout'], 'variants': parsed_layout['variants'] }
def parse_layout_slave(self, xkbfilename, variantname = None):
#print "+++++We are recursive, called with", xkbfilename, variantname
char_stream = antlr3.ANTLRFileStream(xkbfilename, encoding='utf-8')
lexer = XKBGrammarLexer(char_stream)
tokens = antlr3.CommonTokenStream(lexer)
parser = XKBGrammarParser(tokens)
parser_layout = parser.layout()
variants = []
xml_layout = etree.Element('layout')
xml_layout.attrib['layoutname'] = os.path.basename(xkbfilename)
includes = []
for symbols in parser_layout.tree.getChildren():
eSymbol = etree.SubElement(xml_layout, 'symbols')
for mapobject in symbols.getChildren():
if mapobject.getType() == MAPTYPE:
for maptypesect in mapobject.getChildren():
if maptypesect.getType() == MAPOPTIONS:
for mapoption in maptypesect.getChildren():
if mapoption.getText() == 'xkb_symbols' or mapoption.getText() == 'hidden':
eMapOption = etree.SubElement(eSymbol, 'mapoption')
eMapOption.text = mapoption.getText()
elif maptypesect.getType() == MAPNAME:
if maptypesect.getChildCount() == 1:
eMapName = etree.SubElement(eSymbol, 'mapname')
eMapName.text = maptypesect.getChildren()[0].getText()[1:-1]
variants.append(maptypesect.getChildren()[0].getText()[1:-1])
else:
return { "success": False }
else:
return { "success": False }
elif mapobject.getType() == MAPMATERIAL:
eMapMaterial = etree.SubElement(eSymbol, 'mapmaterial')
for name in self.getChildrenByType(mapobject, TOKEN_NAME):
nameText = name.getChild(0).getText()[1:-1]
eTokenName = etree.SubElement(eMapMaterial, 'tokenname', name=nameText )
for include in self.getChildrenByType(mapobject, TOKEN_INCLUDE):
eInclude = etree.SubElement(eMapMaterial, 'tokeninclude')
eInclude.text = include.getChild(0).getText()[1:-1]
includes.append(eInclude.text)
for keytype in self.getChildrenByType(mapobject, TOKEN_KEY_TYPE):
keytypeText = keytype.getChild(0).getText()
eKeyType = etree.SubElement(eMapMaterial, 'tokentype')
eKeyType.text = keytypeText[1:-1]
for modmap in self.getChildrenByType(mapobject, TOKEN_MODIFIER_MAP):
eModMap = etree.SubElement(eMapMaterial, 'tokenmodifiermap', state=modmap.getChild(0).getText())
for modstate in self.getChildrenByTypes(modmap, KEYCODE, KEYCODEX):
if modstate.getType() == KEYCODE:
eModState = etree.SubElement(eModMap, "keycode", value=modstate.getChild(0).getText())
elif modstate.getType() == KEYCODEX:
eModState = etree.SubElement(eModMap, "keycodex", value=modstate.getChild(0).getText())
else:
return { "success": False }
# print "Unexpected token encountered. Aborting...", modstate.getText()
# sys.exit(-1)
allkeysymgroups = {}
for keyset in self.getChildrenByType(mapobject, TOKEN_KEY):
allkeysymgroups[keyset.getChild(0).getChild(0).getText()] = keyset
sortedkeysymgroups = self.sortDict(allkeysymgroups, KeycodesReader.compare_keycode)
for keyset in sortedkeysymgroups:
elem_keysymgroup = self.getChildrenByType(keyset, ELEM_KEYSYMGROUP)
elem_virtualmods = self.getChildrenByType(keyset, ELEM_VIRTUALMODS)
elem_overlay = self.getChildrenByType(keyset, OVERLAY)
override = self.getChildrenListByType(keyset, OVERRIDE)
eTokenKey = etree.SubElement(eMapMaterial, 'tokenkey')
eKeyCodeName = etree.SubElement(eTokenKey, 'keycodename')
keycodex = self.getChildrenListByType(keyset, KEYCODEX)
if len(keycodex) == 1:
eKeyCodeName.text = keycodex[0].getChild(0).getText()
else:
return { "success": False }
#print "Could not retrieve keycode name"
#exit(-1)
if len(override) == 1:
eTokenKey.attrib['override'] = "True"
else:
eTokenKey.attrib['override'] = "False"
if len(self.getChildrenListByType(keyset, ELEM_KEYSYMGROUP)):
elem_keysyms = self.getChildrenListByType(keyset, ELEM_KEYSYMS)
eKeySymGroup = etree.SubElement(eTokenKey, 'keysymgroup')
keysymgroup_counter = len(self.getChildrenListByType(keyset, ELEM_KEYSYMGROUP))
for elem in elem_keysymgroup:
eSymbolsGroup = etree.SubElement(eKeySymGroup, 'symbolsgroup')
for elem2 in elem.getChildren():
for elem3 in elem2.getChildren():
eSymbol = etree.SubElement(eSymbolsGroup, 'symbol')
eSymbol.text = elem3.getText()
if len(elem_keysyms) > 0:
if len(elem_keysyms) == 1:
ksname = elem_keysyms[0].getChild(0).getText()
eKeySyms = etree.SubElement(eKeySymGroup, 'typegroup', value=ksname[1:-1])
else:
""" We are probably processing level3; we keep first item """
ksname = elem_keysyms[0].getChild(0).getText()
eKeySyms = etree.SubElement(eKeySymGroup, 'typegroup', value=ksname[1:-1])
#print "Possibly processing level3"
if len(self.getChildrenListByType(keyset, ELEM_VIRTUALMODS)):
for vmods in elem_virtualmods:
etree.SubElement(eKeySymGroup, 'tokenvirtualmodifiers', value=vmods.getChild(0).getText())
if len(self.getChildrenListByType(keyset, OVERLAY)):
for elem in elem_overlay:
for elem2 in self.getChildrenByType(elem, KEYCODEX):
pass
else:
return { "success": False }
extraction_result = ExtractVariantsKeycodes(xml_layout, variantname)
return { 'success': True,
'all_variants': variants,
'variants': extraction_result['variants'],
'layout': xml_layout,
'keydict': extraction_result['keydict']
}
if __name__ == '__main__':
px = ParseXKB()
store_keydict = {}
px.parse_layout_controller(store_keydict, '/usr/share/X11/xkb/symbols/gr', 'polytonic')
print "About to print"
for k in store_keydict.keys():
print k,
for i in store_keydict[k].keys():
print store_keydict[k][i].getValue(),
print