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tclib.py


products/Sources/formale Sprachen/C/Firefox/third_party/libwebrtc/tools/grit/grit/tclib.py

# Copyright (c) 2012 The Chromium Authors. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. '''Adaptation of the extern.tclib classes for our needs. ''' from __future__ import print_function import functools import re import six from grit import exception from grit import lazy_re import grit.extern.tclib # Matches whitespace sequences which can be folded into a single whitespace # character. This matches single characters so that non-spaces are replaced # with spaces. _FOLD_WHITESPACE = re.compile(r'\s+') # Caches compiled regexp used to split tags in BaseMessage.__init__() _RE_CACHE = {} def Identity(i): return i class BaseMessage(object): '''Base class with methods shared by Message and Translation. ''' def __init__(self, text='', placeholders=[], description='', meaning=''): self.parts = [] self.placeholders = [] self.meaning = meaning self.dirty = True # True if self.id is (or might be) wrong self.id = 0 self.SetDescription(description) if text != '': if not placeholders or placeholders == []: self.AppendText(text) else: tag_map = {} for placeholder in placeholders: tag_map[placeholder.GetPresentation()] = [placeholder, 0] # This creates a regexp like '(TAG1|TAG2|TAG3)'. # The tags have to be sorted in order of decreasing length, so that # longer tags are substituted before shorter tags that happen to be # substrings of the longer tag. # E.g. "EXAMPLE_FOO_NAME" must be matched before "EXAMPLE_FOO", # otherwise "EXAMPLE_FOO" splits "EXAMPLE_FOO_NAME" too. tags = sorted(tag_map.keys(), key=functools.cmp_to_key( lambda x, y: len(x) - len(y) or ((x > y) - (x < y))), reverse=True) tag_re = '(' + '|'.join(tags) + ')' # This caching improves the time to build # chrome/app:generated_resources from 21.562s to 17.672s on Linux. compiled_re = _RE_CACHE.get(tag_re, None) if compiled_re is None: compiled_re = re.compile(tag_re) _RE_CACHE[tag_re] = compiled_re chunked_text = compiled_re.split(text) for chunk in chunked_text: if chunk: # ignore empty chunk if chunk in tag_map: self.AppendPlaceholder(tag_map[chunk][0]) tag_map[chunk][1] += 1 # increase placeholder use count else: self.AppendText(chunk) for key in tag_map: assert tag_map[key][1] != 0 def GetRealContent(self, escaping_function=Identity): '''Returns the original content, i.e. what your application and users will see. Specify a function to escape each translateable bit, if you like. ''' bits = [] for item in self.parts: if isinstance(item, six.string_types): bits.append(escaping_function(item)) else: bits.append(item.GetOriginal()) return ''.join(bits) def GetPresentableContent(self): presentable_content = [] for part in self.parts: if isinstance(part, Placeholder): presentable_content.append(part.GetPresentation()) else: presentable_content.append(part) return ''.join(presentable_content) def AppendPlaceholder(self, placeholder): assert isinstance(placeholder, Placeholder) dup = False for other in self.GetPlaceholders(): if other.presentation == placeholder.presentation: assert other.original == placeholder.original dup = True if not dup: self.placeholders.append(placeholder) self.parts.append(placeholder) self.dirty = True def AppendText(self, text): assert isinstance(text, six.string_types) assert text != '' self.parts.append(text) self.dirty = True def GetContent(self): '''Returns the parts of the message. You may modify parts if you wish. Note that you must not call GetId() on this object until you have finished modifying the contents. ''' self.dirty = True # user might modify content return self.parts def GetDescription(self): return self.description def SetDescription(self, description): self.description = _FOLD_WHITESPACE.sub(' ', description) def GetMeaning(self): return self.meaning def GetId(self): if self.dirty: self.id = self.GenerateId() self.dirty = False return self.id def GenerateId(self): return grit.extern.tclib.GenerateMessageId(self.GetPresentableContent(), self.meaning) def GetPlaceholders(self): return self.placeholders def FillTclibBaseMessage(self, msg): msg.SetDescription(self.description.encode('utf-8')) for part in self.parts: if isinstance(part, Placeholder): ph = grit.extern.tclib.Placeholder( part.presentation.encode('utf-8'), part.original.encode('utf-8'), part.example.encode('utf-8')) msg.AppendPlaceholder(ph) else: msg.AppendText(part.encode('utf-8')) class Message(BaseMessage): '''A message.''' def __init__(self, text='', placeholders=[], description='', meaning='', assigned_id=None): super(Message, self).__init__(text, placeholders, description, meaning) self.assigned_id = assigned_id def ToTclibMessage(self): msg = grit.extern.tclib.Message('utf-8', meaning=self.meaning) self.FillTclibBaseMessage(msg) return msg def GetId(self): '''Use the assigned id if we have one.''' if self.assigned_id: return self.assigned_id return super(Message, self).GetId() def HasAssignedId(self): '''Returns True if this message has an assigned id.''' return bool(self.assigned_id) class Translation(BaseMessage): '''A translation.''' def __init__(self, text='', id='', placeholders=[], description='', meaning=''): super(Translation, self).__init__(text, placeholders, description, meaning) self.id = id def GetId(self): assert id != '', "ID has not been set." return self.id def SetId(self, id): self.id = id def ToTclibMessage(self): msg = grit.extern.tclib.Message( 'utf-8', id=self.id, meaning=self.meaning) self.FillTclibBaseMessage(msg) return msg class Placeholder(grit.extern.tclib.Placeholder): '''Modifies constructor to accept a Unicode string ''' # Must match placeholder presentation names _NAME_RE = lazy_re.compile('^[A-Za-z0-9_]+$') def __init__(self, presentation, original, example): '''Creates a new placeholder. Args: presentation: 'USERNAME' original: '%s' example: 'Joi' ''' assert presentation != '' assert original != '' assert example != '' if not self._NAME_RE.match(presentation): raise exception.InvalidPlaceholderName(presentation) self.presentation = presentation self.original = original self.example = example def GetPresentation(self): return self.presentation def GetOriginal(self): return self.original def GetExample(self): return self.example

                                                                                                                                                                                                                                                                                                                                                                                                     

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