Package translate :: Package convert :: Module dtd2po

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# Source Code for Module translate.convert.dtd2po

      1  #!/usr/bin/env python
      2  # -*- coding: utf-8 -*-
      3  #
      4  # Copyright 2002-2006 Zuza Software Foundation
      5  #
      6  # This file is part of translate.
      7  #
      8  # translate is free software; you can redistribute it and/or modify
      9  # it under the terms of the GNU General Public License as published by
     10  # the Free Software Foundation; either version 2 of the License, or
     11  # (at your option) any later version.
     12  #
     13  # translate is distributed in the hope that it will be useful,
     14  # but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16  # GNU General Public License for more details.
     17  #
     18  # You should have received a copy of the GNU General Public License
     19  # along with translate; if not, write to the Free Software
     20  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
     21
     22  """script to convert a mozilla .dtd UTF-8 localization format to a
     23  gettext .po localization file using the po and dtd modules, and the
     24  dtd2po convertor class which is in this module
     25  You can convert back to .dtd using po2dtd.py"""
     26
     27  from translate.storage import po
     28  from translate.storage import dtd
     29  from translate.misc import quote
     30  from translate.convert import accesskey as accesskeyfn
     31
     32 -def is_css_entity(entity):
     33      """Says if the given entity is likely to contain CSS that should not be
     34      translated."""
     35      if '.' in entity:
     36          prefix, suffix = entity.rsplit('.', 1)
     37          if suffix in ["height", "width", "unixWidth", "macWidth", "size"] or suffix.startswith("style"):
     38              return True
     39      return False
     40
     41 -class dtd2po:
     42 -    def __init__(self, blankmsgstr=False, duplicatestyle="msgctxt"):
     43          self.currentgroup = None
     44          self.blankmsgstr = blankmsgstr
     45          self.duplicatestyle = duplicatestyle
     46
     47 -    def convertcomments(self, thedtd, thepo):
     48          entity = quote.rstripeol(thedtd.entity)
     49          if len(entity) > 0:
     50              thepo.addlocation(thedtd.entity)
     51          for commenttype, comment in thedtd.comments:
     52              # handle groups
     53              if (commenttype == "locgroupstart"):
     54                  groupcomment = comment.replace('BEGIN','GROUP')
     55                  self.currentgroup = groupcomment
     56              elif (commenttype == "locgroupend"):
     57                  groupcomment = comment.replace('END','GROUP')
     58                  self.currentgroup = None
     59              # handle automatic comment
     60              if commenttype == "automaticcomment":
     61                  thepo.addnote(comment, origin="developer")
     62              # handle normal comments
     63              else:
     64                  thepo.addnote(quote.stripcomment(comment), origin="developer")
     65          # handle group stuff
     66          if self.currentgroup is not None:
     67              thepo.addnote(quote.stripcomment(self.currentgroup), origin="translator")
     68          if is_css_entity(entity):
     69              thepo.addnote("Do not translate this.  Only change the numeric values if you need this dialogue box to appear bigger", origin="developer")
     70
     71 -    def convertstrings(self, thedtd, thepo):
     72          # extract the string, get rid of quoting
     73          unquoted = dtd.unquotefromdtd(thedtd.definition).replace("\r", "")
     74          # escape backslashes... but not if they're for a newline
     75          # unquoted = unquoted.replace("\\", "\\\\").replace("\\\\n", "\\n")
     76          # now split the string into lines and quote them
     77          lines = unquoted.split('\n')
     78          while lines and not lines[0].strip():
     79              del lines[0]
     80          while lines and not lines[-1].strip():
     81              del lines[-1]
     82          # quotes have been escaped already by escapeforpo, so just add the start and end quotes
     83          if len(lines) > 1:
     84              thepo.source = "\n".join([lines[0].rstrip() + ' '] + \
     85                      [line.strip() + ' ' for line in lines[1:-1]] + \
     86                      [lines[-1].lstrip()])
     87          elif lines:
     88              thepo.source = lines[0]
     89          else:
     90              thepo.source = ""
     91          thepo.target = ""
     92
     93 -    def convertunit(self, thedtd):
     94          """converts a dtd unit to a po unit, returns None if empty or not for translation"""
     95          if thedtd is None:
     96              return None
     97          if getattr(thedtd, "entityparameter", None) == "SYSTEM":
     98              return None
     99          thepo = po.pounit(encoding="UTF-8")
    100          # remove unwanted stuff
    101          for commentnum in range(len(thedtd.comments)):
    102              commenttype, locnote = thedtd.comments[commentnum]
    103              # if this is a localization note
    104              if commenttype == 'locnote':
    105                  # parse the locnote into the entity and the actual note
    106                  typeend = quote.findend(locnote,'LOCALIZATION NOTE')
    107                  # parse the id
    108                  idstart = locnote.find('(', typeend)
    109                  if idstart == -1: continue
    110                  idend = locnote.find(')', idstart+1)
    111                  entity = locnote[idstart+1:idend].strip()
    112                  # parse the actual note
    113                  actualnotestart = locnote.find(':', idend+1)
    114                  actualnoteend = locnote.find('-->', idend)
    115                  actualnote = locnote[actualnotestart+1:actualnoteend].strip()
    116                  # if it's for this entity, process it
    117                  if thedtd.entity == entity:
    118                      # if it says don't translate (and nothing more),
    119                      if actualnote.startswith("DONT_TRANSLATE"):
    120                          # take out the entity,definition and the DONT_TRANSLATE comment
    121                          thedtd.entity = ""
    122                          thedtd.definition = ""
    123                          del thedtd.comments[commentnum]
    124                          # finished this for loop
    125                          break
    126                      else:
    127                          # convert it into an automatic comment, to be processed by convertcomments
    128                          thedtd.comments[commentnum] = ("automaticcomment", actualnote)
    129          # do a standard translation
    130          self.convertcomments(thedtd, thepo)
    131          self.convertstrings(thedtd, thepo)
    132          if thepo.isblank() and not thepo.getlocations():
    133              return None
    134          else:
    135              return thepo
    136
    137 -    def convertmixedunit(self, labeldtd, accesskeydtd):
    138          labelpo = self.convertunit(labeldtd)
    139          accesskeypo = self.convertunit(accesskeydtd)
    140          if labelpo is None:
    141              return accesskeypo
    142          if accesskeypo is None:
    143              return labelpo
    144          thepo = po.pounit(encoding="UTF-8")
    145          thepo.addlocations(labelpo.getlocations())
    146          thepo.addlocations(accesskeypo.getlocations())
    147          thepo.msgidcomment = thepo._extract_msgidcomments() + labelpo._extract_msgidcomments()
    148          thepo.msgidcomment = thepo._extract_msgidcomments() + accesskeypo._extract_msgidcomments()
    149          thepo.addnote(labelpo.getnotes("developer"), "developer")
    150          thepo.addnote(accesskeypo.getnotes("developer"), "developer")
    151          thepo.addnote(labelpo.getnotes("translator"), "translator")
    152          thepo.addnote(accesskeypo.getnotes("translator"), "translator")
    153          # redo the strings from original dtd...
    154          label = dtd.unquotefromdtd(labeldtd.definition).decode('UTF-8')
    155          accesskey = dtd.unquotefromdtd(accesskeydtd.definition).decode('UTF-8')
    156          label = accesskeyfn.combine(label, accesskey)
    157          if label is None:
    158              return None
    159          thepo.source = label
    160          thepo.target = ""
    161          return thepo
    162
    163 -    def findmixedentities(self, thedtdfile):
    164          """creates self.mixedentities from the dtd file..."""
    165          self.mixedentities = {} # those entities which have a .label/.title and .accesskey combined
    166          for entity in thedtdfile.index.keys():
    167              for labelsuffix in dtd.labelsuffixes:
    168                  if entity.endswith(labelsuffix):
    169                      entitybase = entity[:entity.rfind(labelsuffix)]
    170                      # see if there is a matching accesskey in this line, making this a
    171                      # mixed entity
    172                      for akeytype in dtd.accesskeysuffixes:
    173                          if thedtdfile.index.has_key(entitybase + akeytype):
    174                              # add both versions to the list of mixed entities
    175                              self.mixedentities[entity] = {}
    176                              self.mixedentities[entitybase+akeytype] = {}
    177                      # check if this could be a mixed entity (labelsuffix and ".accesskey")
    178
    179 -    def convertdtdunit(self, thedtdfile, thedtd, mixbucket="dtd"):
    180          """converts a dtd unit from thedtdfile to a po unit, handling mixed entities along the way..."""
    181          # keep track of whether accesskey and label were combined
    182          if thedtd.entity in self.mixedentities:
    183              # use special convertmixed unit which produces one pounit with
    184              # both combined for the label and None for the accesskey
    185              alreadymixed = self.mixedentities[thedtd.entity].get(mixbucket, None)
    186              if alreadymixed:
    187                  # we are successfully throwing this away...
    188                  return None
    189              elif alreadymixed is None:
    190                  # depending on what we come across first, work out the label and the accesskey
    191                  labeldtd, accesskeydtd = None, None
    192                  labelentity, accesskeyentity = None, None
    193                  for labelsuffix in dtd.labelsuffixes:
    194                      if thedtd.entity.endswith(labelsuffix):
    195                          entitybase = thedtd.entity[:thedtd.entity.rfind(labelsuffix)]
    196                          for akeytype in dtd.accesskeysuffixes:
    197                              if thedtdfile.index.has_key(entitybase + akeytype):
    198                                  labelentity, labeldtd = thedtd.entity, thedtd
    199                                  accesskeyentity = labelentity[:labelentity.rfind(labelsuffix)]+akeytype
    200                                  accesskeydtd = thedtdfile.index[accesskeyentity]
    201                                  break
    202                  else:
    203                      for akeytype in dtd.accesskeysuffixes:
    204                          if thedtd.entity.endswith(akeytype):
    205                              accesskeyentity, accesskeydtd = thedtd.entity, thedtd
    206                              for labelsuffix in dtd.labelsuffixes:
    207                                  labelentity = accesskeyentity[:accesskeyentity.rfind(akeytype)]+labelsuffix
    208                                  if thedtdfile.index.has_key(labelentity):
    209                                      labeldtd = thedtdfile.index[labelentity]
    210                                      break
    211                              else:
    212                                  labelentity = None
    213                                  accesskeyentity = None
    214                  thepo = self.convertmixedunit(labeldtd, accesskeydtd)
    215                  if thepo is not None:
    216                      if accesskeyentity is not None:
    217                          self.mixedentities[accesskeyentity][mixbucket] = True
    218                      if labelentity is not None:
    219                          self.mixedentities[labelentity][mixbucket] = True
    220                      return thepo
    221                  else:
    222                      # otherwise the mix failed. add each one separately and remember they weren't mixed
    223                      if accesskeyentity is not None:
    224                          self.mixedentities[accesskeyentity][mixbucket] = False
    225                      if labelentity is not None:
    226                          self.mixedentities[labelentity][mixbucket] = False
    227          return self.convertunit(thedtd)
    228
    229 -    def convertstore(self, thedtdfile):
    230          thetargetfile = po.pofile()
    231          targetheader = thetargetfile.makeheader(charset="UTF-8", encoding="8bit", x_accelerator_marker="&")
    232          targetheader.addnote("extracted from %s" % thedtdfile.filename, "developer")
    233          thetargetfile.addunit(targetheader)
    234          thedtdfile.makeindex()
    235          self.findmixedentities(thedtdfile)
    236          # go through the dtd and convert each unit
    237          for thedtd in thedtdfile.units:
    238              if thedtd.isnull():
    239                  continue
    240              thepo = self.convertdtdunit(thedtdfile, thedtd)
    241              if thepo is not None:
    242                  thetargetfile.addunit(thepo)
    243          thetargetfile.removeduplicates(self.duplicatestyle)
    244          return thetargetfile
    245
    246 -    def mergestore(self, origdtdfile, translateddtdfile):
    247          thetargetfile = po.pofile()
    248          targetheader = thetargetfile.makeheader(charset="UTF-8", encoding="8bit")
    249          targetheader.addnote("extracted from %s, %s" % (origdtdfile.filename, translateddtdfile.filename), "developer")
    250          thetargetfile.addunit(targetheader)
    251          origdtdfile.makeindex()
    252          self.findmixedentities(origdtdfile)
    253          translateddtdfile.makeindex()
    254          self.findmixedentities(translateddtdfile)
    255          # go through the dtd files and convert each unit
    256          for origdtd in origdtdfile.units:
    257              if origdtd.isnull():
    258                  continue
    259              origpo = self.convertdtdunit(origdtdfile, origdtd, mixbucket="orig")
    260              if origdtd.entity in self.mixedentities:
    261                  mixedentitydict = self.mixedentities[origdtd.entity]
    262                  if "orig" not in mixedentitydict:
    263                      # this means that the entity is mixed in the translation, but not the original - treat as unmixed
    264                      mixbucket = "orig"
    265                      del self.mixedentities[origdtd.entity]
    266                  elif mixedentitydict["orig"]:
    267                      # the original entity is already mixed successfully
    268                      mixbucket = "translate"
    269                  else:
    270                      # ??
    271                      mixbucket = "orig"
    272              else:
    273                  mixbucket = "translate"
    274              if origpo is None:
    275                  # this means its a mixed entity (with accesskey) that's already been dealt with)
    276                  continue
    277              if origdtd.entity in translateddtdfile.index:
    278                  translateddtd = translateddtdfile.index[origdtd.entity]
    279                  translatedpo = self.convertdtdunit(translateddtdfile, translateddtd, mixbucket=mixbucket)
    280              else:
    281                  translatedpo = None
    282              if origpo is not None:
    283                  if translatedpo is not None and not self.blankmsgstr:
    284                      origpo.target = translatedpo.source
    285                  thetargetfile.addunit(origpo)
    286          thetargetfile.removeduplicates(self.duplicatestyle)
    287          return thetargetfile
    288
    289 -def convertdtd(inputfile, outputfile, templatefile, pot=False, duplicatestyle="msgctxt"):
    290      """reads in inputfile and templatefile using dtd, converts using dtd2po, writes to outputfile"""
    291      inputstore = dtd.dtdfile(inputfile)
    292      convertor = dtd2po(blankmsgstr=pot, duplicatestyle=duplicatestyle)
    293      if templatefile is None:
    294          outputstore = convertor.convertstore(inputstore)
    295      else:
    296          templatestore = dtd.dtdfile(templatefile)
    297          outputstore = convertor.mergestore(templatestore, inputstore)
    298      if outputstore.isempty():
    299          return 0
    300      outputfile.write(str(outputstore))
    301      return 1
    302
    303 -def main(argv=None):
    304      from translate.convert import convert
    305      formats = {"dtd": ("po", convertdtd), ("dtd", "dtd"): ("po", convertdtd)}
    306      parser = convert.ConvertOptionParser(formats, usetemplates=True, usepots=True, description=__doc__)
    307      parser.add_duplicates_option()
    308      parser.passthrough.append("pot")
    309      parser.run(argv)
    310
    311  if __name__ == '__main__':
    312      main()
    313