Mercurial > hg
annotate mercurial/templatefilters.py @ 12957:9f2ac318b92e
util: clarify purpose of MBTextWrapper class
It's easy to get confused and scared of an Unicode monster when
skimming through this code: document that this is really just
about column-counting.
author | Nicolas Dumazet <nicdumz.commits@gmail.com> |
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date | Tue, 09 Nov 2010 13:43:35 +0900 |
parents | 48a4acd1ccf1 |
children | 57150dc5a9c7 |
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1 # template-filters.py - common template expansion filters |
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2 # |
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3 # Copyright 2005-2008 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 import cgi, re, os, time, urllib |
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9 import encoding, node, util |
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10 |
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11 def stringify(thing): |
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12 '''turn nested template iterator into string.''' |
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13 if hasattr(thing, '__iter__') and not isinstance(thing, str): |
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14 return "".join([stringify(t) for t in thing if t is not None]) |
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15 return str(thing) |
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16 |
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17 agescales = [("year", 3600 * 24 * 365), |
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18 ("month", 3600 * 24 * 30), |
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19 ("week", 3600 * 24 * 7), |
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20 ("day", 3600 * 24), |
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21 ("hour", 3600), |
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22 ("minute", 60), |
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23 ("second", 1)] |
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24 |
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25 def age(date): |
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26 '''turn a (timestamp, tzoff) tuple into an age string.''' |
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27 |
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28 def plural(t, c): |
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29 if c == 1: |
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30 return t |
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31 return t + "s" |
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32 def fmt(t, c): |
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33 return "%d %s" % (c, plural(t, c)) |
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34 |
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35 now = time.time() |
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36 then = date[0] |
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37 if then > now: |
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38 return 'in the future' |
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39 |
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40 delta = max(1, int(now - then)) |
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41 if delta > agescales[0][1] * 2: |
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42 return util.shortdate(date) |
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43 |
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44 for t, s in agescales: |
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45 n = delta // s |
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46 if n >= 2 or s == 1: |
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47 return '%s ago' % fmt(t, n) |
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48 |
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49 para_re = None |
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50 space_re = None |
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51 |
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52 def fill(text, width): |
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53 '''fill many paragraphs.''' |
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54 global para_re, space_re |
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55 if para_re is None: |
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56 para_re = re.compile('(\n\n|\n\\s*[-*]\\s*)', re.M) |
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57 space_re = re.compile(r' +') |
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58 |
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59 def findparas(): |
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60 start = 0 |
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61 while True: |
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62 m = para_re.search(text, start) |
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63 if not m: |
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64 uctext = unicode(text[start:], encoding.encoding) |
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65 w = len(uctext) |
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66 while 0 < w and uctext[w - 1].isspace(): |
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67 w -= 1 |
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68 yield (uctext[:w].encode(encoding.encoding), |
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69 uctext[w:].encode(encoding.encoding)) |
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70 break |
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71 yield text[start:m.start(0)], m.group(1) |
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72 start = m.end(1) |
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73 |
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74 return "".join([space_re.sub(' ', util.wrap(para, width=width)) + rest |
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75 for para, rest in findparas()]) |
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76 |
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77 def firstline(text): |
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78 '''return the first line of text''' |
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79 try: |
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80 return text.splitlines(True)[0].rstrip('\r\n') |
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81 except IndexError: |
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82 return '' |
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83 |
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84 def nl2br(text): |
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85 '''replace raw newlines with xhtml line breaks.''' |
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86 return text.replace('\n', '<br/>\n') |
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87 |
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88 def obfuscate(text): |
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89 text = unicode(text, encoding.encoding, 'replace') |
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90 return ''.join(['&#%d;' % ord(c) for c in text]) |
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91 |
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92 def domain(author): |
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93 '''get domain of author, or empty string if none.''' |
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94 f = author.find('@') |
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95 if f == -1: |
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96 return '' |
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97 author = author[f + 1:] |
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98 f = author.find('>') |
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99 if f >= 0: |
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100 author = author[:f] |
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101 return author |
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102 |
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103 def person(author): |
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104 '''get name of author, or else username.''' |
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105 if not '@' in author: |
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106 return author |
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107 f = author.find('<') |
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108 if f == -1: |
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109 return util.shortuser(author) |
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110 return author[:f].rstrip() |
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111 |
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112 def indent(text, prefix): |
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113 '''indent each non-empty line of text after first with prefix.''' |
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114 lines = text.splitlines() |
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115 num_lines = len(lines) |
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116 endswithnewline = text[-1:] == '\n' |
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117 def indenter(): |
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118 for i in xrange(num_lines): |
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119 l = lines[i] |
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120 if i and l.strip(): |
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121 yield prefix |
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122 yield l |
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123 if i < num_lines - 1 or endswithnewline: |
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124 yield '\n' |
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125 return "".join(indenter()) |
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126 |
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127 def permissions(flags): |
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128 if "l" in flags: |
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129 return "lrwxrwxrwx" |
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130 if "x" in flags: |
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131 return "-rwxr-xr-x" |
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132 return "-rw-r--r--" |
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133 |
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134 def xmlescape(text): |
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135 text = (text |
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136 .replace('&', '&') |
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137 .replace('<', '<') |
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138 .replace('>', '>') |
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139 .replace('"', '"') |
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140 .replace("'", ''')) # ' invalid in HTML |
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141 return re.sub('[\x00-\x08\x0B\x0C\x0E-\x1F]', ' ', text) |
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142 |
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143 def uescape(c): |
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144 if ord(c) < 0x80: |
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145 return c |
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146 else: |
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147 return '\\u%04x' % ord(c) |
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148 |
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149 _escapes = [ |
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150 ('\\', '\\\\'), ('"', '\\"'), ('\t', '\\t'), ('\n', '\\n'), |
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151 ('\r', '\\r'), ('\f', '\\f'), ('\b', '\\b'), |
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152 ] |
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153 |
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154 def jsonescape(s): |
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155 for k, v in _escapes: |
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156 s = s.replace(k, v) |
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157 return ''.join(uescape(c) for c in s) |
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158 |
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159 def json(obj): |
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160 if obj is None or obj is False or obj is True: |
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161 return {None: 'null', False: 'false', True: 'true'}[obj] |
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162 elif isinstance(obj, int) or isinstance(obj, float): |
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163 return str(obj) |
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164 elif isinstance(obj, str): |
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165 u = unicode(obj, encoding.encoding, 'replace') |
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166 return '"%s"' % jsonescape(u) |
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167 elif isinstance(obj, unicode): |
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168 return '"%s"' % jsonescape(obj) |
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169 elif hasattr(obj, 'keys'): |
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170 out = [] |
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171 for k, v in obj.iteritems(): |
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172 s = '%s: %s' % (json(k), json(v)) |
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173 out.append(s) |
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174 return '{' + ', '.join(out) + '}' |
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175 elif hasattr(obj, '__iter__'): |
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176 out = [] |
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177 for i in obj: |
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178 out.append(json(i)) |
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179 return '[' + ', '.join(out) + ']' |
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180 else: |
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181 raise TypeError('cannot encode type %s' % obj.__class__.__name__) |
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182 |
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183 def stripdir(text): |
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184 '''Treat the text as path and strip a directory level, if possible.''' |
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185 dir = os.path.dirname(text) |
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186 if dir == "": |
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187 return os.path.basename(text) |
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188 else: |
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189 return dir |
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190 |
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191 def nonempty(str): |
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192 return str or "(none)" |
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193 |
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194 filters = { |
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195 "addbreaks": nl2br, |
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196 "basename": os.path.basename, |
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197 "stripdir": stripdir, |
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198 "age": age, |
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199 "date": lambda x: util.datestr(x), |
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200 "domain": domain, |
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201 "email": util.email, |
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202 "escape": lambda x: cgi.escape(x, True), |
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203 "fill68": lambda x: fill(x, width=68), |
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204 "fill76": lambda x: fill(x, width=76), |
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205 "firstline": firstline, |
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206 "tabindent": lambda x: indent(x, '\t'), |
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207 "hgdate": lambda x: "%d %d" % x, |
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208 "isodate": lambda x: util.datestr(x, '%Y-%m-%d %H:%M %1%2'), |
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209 "isodatesec": lambda x: util.datestr(x, '%Y-%m-%d %H:%M:%S %1%2'), |
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210 "json": json, |
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211 "jsonescape": jsonescape, |
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212 "localdate": lambda x: (x[0], util.makedate()[1]), |
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213 "nonempty": nonempty, |
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214 "obfuscate": obfuscate, |
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215 "permissions": permissions, |
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216 "person": person, |
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217 "rfc822date": lambda x: util.datestr(x, "%a, %d %b %Y %H:%M:%S %1%2"), |
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218 "rfc3339date": lambda x: util.datestr(x, "%Y-%m-%dT%H:%M:%S%1:%2"), |
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219 "hex": node.hex, |
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220 "short": lambda x: x[:12], |
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221 "shortdate": util.shortdate, |
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222 "stringify": stringify, |
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223 "strip": lambda x: x.strip(), |
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224 "urlescape": lambda x: urllib.quote(x), |
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225 "user": lambda x: util.shortuser(x), |
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226 "stringescape": lambda x: x.encode('string_escape'), |
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227 "xmlescape": xmlescape, |
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228 } |