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1#!/usr/bin/env python
2# Copyright (c) 2012 The Chromium Authors. All rights reserved.
3# Use of this source code is governed by a BSD-style license that can be
4# found in the LICENSE file.
5
6'''Stuff to prevent conflicting shortcuts.
7'''
8
9from grit import lazy_re
10
11
12class ShortcutGroup(object):
13  '''Manages a list of cliques that belong together in a single shortcut
14  group.  Knows how to detect conflicting shortcut keys.
15  '''
16
17  # Matches shortcut keys, e.g. &J
18  SHORTCUT_RE = lazy_re.compile('([^&]|^)(&[A-Za-z])')
19
20  def __init__(self, name):
21    self.name = name
22    # Map of language codes to shortcut keys used (which is a map of
23    # shortcut keys to counts).
24    self.keys_by_lang = {}
25    # List of cliques in this group
26    self.cliques = []
27
28  def AddClique(self, c):
29    for existing_clique in self.cliques:
30      if existing_clique.GetId() == c.GetId():
31        # This happens e.g. when we have e.g.
32        # <if expr1><structure 1></if> <if expr2><structure 2></if>
33        # where only one will really be included in the output.
34        return
35
36    self.cliques.append(c)
37    for (lang, msg) in c.clique.items():
38      if lang not in self.keys_by_lang:
39        self.keys_by_lang[lang] = {}
40      keymap = self.keys_by_lang[lang]
41
42      content = msg.GetRealContent()
43      keys = [groups[1] for groups in self.SHORTCUT_RE.findall(content)]
44      for key in keys:
45        key = key.upper()
46        if key in keymap:
47          keymap[key] += 1
48        else:
49          keymap[key] = 1
50
51  def GenerateWarnings(self, tc_project):
52    # For any language that has more than one occurrence of any shortcut,
53    # make a list of the conflicting shortcuts.
54    problem_langs = {}
55    for (lang, keys) in self.keys_by_lang.items():
56      for (key, count) in keys.items():
57        if count > 1:
58          if lang not in problem_langs:
59            problem_langs[lang] = []
60          problem_langs[lang].append(key)
61
62    warnings = []
63    if len(problem_langs):
64      warnings.append("WARNING - duplicate keys exist in shortcut group %s" %
65                      self.name)
66      for (lang,keys) in problem_langs.items():
67        warnings.append("  %6s duplicates: %s" % (lang, ', '.join(keys)))
68    return warnings
69
70
71def GenerateDuplicateShortcutsWarnings(uberclique, tc_project):
72  '''Given an UberClique and a project name, will print out helpful warnings
73  if there are conflicting shortcuts within shortcut groups in the provided
74  UberClique.
75
76  Args:
77    uberclique: clique.UberClique()
78    tc_project: 'MyProjectNameInTheTranslationConsole'
79
80  Returns:
81    ['warning line 1', 'warning line 2', ...]
82  '''
83  warnings = []
84  groups = {}
85  for c in uberclique.AllCliques():
86    for group in c.shortcut_groups:
87      if group not in groups:
88        groups[group] = ShortcutGroup(group)
89      groups[group].AddClique(c)
90  for group in groups.values():
91    warnings += group.GenerateWarnings(tc_project)
92  return warnings
93
94