Mercurial > hg
annotate mercurial/ignore.py @ 24066:afdf5f6ab37a
pager: set an attribute on ui indicating that a pager is active
A subsequent patch will teach the color extension to do different things
depending on whether a pager is active. This patch leaves a breadcrumb
on the ui instance to allow it do that that.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Fri, 06 Feb 2015 12:07:56 -0800 |
parents | 0127366df8fe |
children | 8cf7f0c4cb14 |
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1 # ignore.py - ignored file handling for mercurial |
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2 # |
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3 # Copyright 2007 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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7 |
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8 from i18n import _ |
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9 import util, match |
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10 import re |
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11 |
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12 _commentre = None |
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13 |
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14 def ignorepats(lines): |
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15 '''parse lines (iterable) of .hgignore text, returning a tuple of |
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16 (patterns, parse errors). These patterns should be given to compile() |
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17 to be validated and converted into a match function.''' |
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18 syntaxes = {'re': 'relre:', 'regexp': 'relre:', 'glob': 'relglob:'} |
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19 syntax = 'relre:' |
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20 patterns = [] |
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21 warnings = [] |
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22 |
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23 for line in lines: |
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24 if "#" in line: |
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25 global _commentre |
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26 if not _commentre: |
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27 _commentre = re.compile(r'((^|[^\\])(\\\\)*)#.*') |
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28 # remove comments prefixed by an even number of escapes |
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29 line = _commentre.sub(r'\1', line) |
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30 # fixup properly escaped comments that survived the above |
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31 line = line.replace("\\#", "#") |
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32 line = line.rstrip() |
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33 if not line: |
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34 continue |
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35 |
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36 if line.startswith('syntax:'): |
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37 s = line[7:].strip() |
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38 try: |
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39 syntax = syntaxes[s] |
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40 except KeyError: |
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41 warnings.append(_("ignoring invalid syntax '%s'") % s) |
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42 continue |
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43 pat = syntax + line |
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44 for s, rels in syntaxes.iteritems(): |
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45 if line.startswith(rels): |
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46 pat = line |
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47 break |
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48 elif line.startswith(s+':'): |
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49 pat = rels + line[len(s) + 1:] |
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50 break |
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51 patterns.append(pat) |
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52 |
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53 return patterns, warnings |
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54 |
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55 def readpats(root, files, warn): |
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56 '''return a dict mapping ignore-file-name to list-of-patterns''' |
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57 |
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58 pats = {} |
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59 for f in files: |
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60 if f in pats: |
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61 continue |
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62 try: |
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63 pats[f] = [] |
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64 fp = open(f) |
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65 pats[f], warnings = ignorepats(fp) |
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66 fp.close() |
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67 for warning in warnings: |
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68 warn("%s: %s\n" % (f, warning)) |
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69 except IOError, inst: |
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70 if f != files[0]: |
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71 warn(_("skipping unreadable ignore file '%s': %s\n") % |
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72 (f, inst.strerror)) |
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73 return [(f, pats[f]) for f in files if f in pats] |
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74 |
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75 def ignore(root, files, warn): |
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76 '''return matcher covering patterns in 'files'. |
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77 |
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78 the files parsed for patterns include: |
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79 .hgignore in the repository root |
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80 any additional files specified in the [ui] section of ~/.hgrc |
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81 |
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82 trailing white space is dropped. |
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83 the escape character is backslash. |
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84 comments start with #. |
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85 empty lines are skipped. |
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86 |
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87 lines can be of the following formats: |
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88 |
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89 syntax: regexp # defaults following lines to non-rooted regexps |
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90 syntax: glob # defaults following lines to non-rooted globs |
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91 re:pattern # non-rooted regular expression |
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92 glob:pattern # non-rooted glob |
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93 pattern # pattern of the current default type''' |
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94 |
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95 pats = readpats(root, files, warn) |
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96 |
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97 allpats = [] |
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98 for f, patlist in pats: |
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99 allpats.extend(patlist) |
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100 if not allpats: |
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101 return util.never |
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102 |
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103 try: |
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104 ignorefunc = match.match(root, '', [], allpats) |
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105 except util.Abort: |
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106 # Re-raise an exception where the src is the right file |
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107 for f, patlist in pats: |
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108 try: |
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109 match.match(root, '', [], patlist) |
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110 except util.Abort, inst: |
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111 raise util.Abort('%s: %s' % (f, inst[0])) |
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112 |
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113 return ignorefunc |