Mercurial > hg
annotate mercurial/templatefilters.py @ 8716:f3322bb29a0e
dirstate: don't complain about 0-length files
author | Matt Mackall <mpm@selenic.com> |
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date | Thu, 04 Jun 2009 16:21:09 -0500 |
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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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6 # GNU General Public License version 2, incorporated herein by reference. |
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7 |
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8 import cgi, re, os, time, urllib, textwrap |
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9 import util, encoding |
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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 = [("second", 1), |
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18 ("minute", 60), |
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19 ("hour", 3600), |
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20 ("day", 3600 * 24), |
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21 ("week", 3600 * 24 * 7), |
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22 ("month", 3600 * 24 * 30), |
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23 ("year", 3600 * 24 * 365)] |
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24 |
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25 agescales.reverse() |
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26 |
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27 def age(date): |
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28 '''turn a (timestamp, tzoff) tuple into an age string.''' |
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29 |
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30 def plural(t, c): |
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31 if c == 1: |
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32 return t |
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33 return t + "s" |
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34 def fmt(t, c): |
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35 return "%d %s" % (c, plural(t, c)) |
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36 |
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37 now = time.time() |
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38 then = date[0] |
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39 if then > now: |
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40 return 'in the future' |
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41 |
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42 delta = max(1, int(now - then)) |
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43 for t, s in agescales: |
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44 n = delta / s |
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45 if n >= 2 or s == 1: |
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46 return fmt(t, n) |
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47 |
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48 para_re = None |
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49 space_re = None |
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50 |
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51 def fill(text, width): |
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52 '''fill many paragraphs.''' |
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53 global para_re, space_re |
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54 if para_re is None: |
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55 para_re = re.compile('(\n\n|\n\\s*[-*]\\s*)', re.M) |
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56 space_re = re.compile(r' +') |
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57 |
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58 def findparas(): |
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59 start = 0 |
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60 while True: |
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61 m = para_re.search(text, start) |
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62 if not m: |
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63 w = len(text) |
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64 while w > start and text[w-1].isspace(): w -= 1 |
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65 yield text[start:w], text[w:] |
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66 break |
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67 yield text[start:m.start(0)], m.group(1) |
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68 start = m.end(1) |
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69 |
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70 return "".join([space_re.sub(' ', textwrap.fill(para, width)) + rest |
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71 for para, rest in findparas()]) |
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72 |
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73 def firstline(text): |
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74 '''return the first line of text''' |
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75 try: |
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76 return text.splitlines(1)[0].rstrip('\r\n') |
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77 except IndexError: |
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78 return '' |
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79 |
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80 def nl2br(text): |
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81 '''replace raw newlines with xhtml line breaks.''' |
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82 return text.replace('\n', '<br/>\n') |
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83 |
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84 def obfuscate(text): |
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85 text = unicode(text, encoding.encoding, 'replace') |
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86 return ''.join(['&#%d;' % ord(c) for c in text]) |
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87 |
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88 def domain(author): |
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89 '''get domain of author, or empty string if none.''' |
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90 f = author.find('@') |
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91 if f == -1: return '' |
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92 author = author[f+1:] |
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93 f = author.find('>') |
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94 if f >= 0: author = author[:f] |
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95 return author |
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96 |
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97 def person(author): |
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98 '''get name of author, or else username.''' |
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99 if not '@' in author: return author |
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100 f = author.find('<') |
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101 if f == -1: return util.shortuser(author) |
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102 return author[:f].rstrip() |
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103 |
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104 def indent(text, prefix): |
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105 '''indent each non-empty line of text after first with prefix.''' |
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106 lines = text.splitlines() |
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107 num_lines = len(lines) |
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108 def indenter(): |
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109 for i in xrange(num_lines): |
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110 l = lines[i] |
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111 if i and l.strip(): |
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112 yield prefix |
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113 yield l |
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114 if i < num_lines - 1 or text.endswith('\n'): |
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115 yield '\n' |
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116 return "".join(indenter()) |
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117 |
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118 def permissions(flags): |
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119 if "l" in flags: |
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120 return "lrwxrwxrwx" |
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121 if "x" in flags: |
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122 return "-rwxr-xr-x" |
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123 return "-rw-r--r--" |
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124 |
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125 def xmlescape(text): |
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126 text = (text |
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127 .replace('&', '&') |
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128 .replace('<', '<') |
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129 .replace('>', '>') |
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130 .replace('"', '"') |
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131 .replace("'", ''')) # ' invalid in HTML |
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132 return re.sub('[\x00-\x08\x0B\x0C\x0E-\x1F]', ' ', text) |
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133 |
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134 _escapes = [ |
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135 ('\\', '\\\\'), ('"', '\\"'), ('\t', '\\t'), ('\n', '\\n'), |
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136 ('\r', '\\r'), ('\f', '\\f'), ('\b', '\\b'), |
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137 ] |
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138 |
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139 def jsonescape(s): |
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140 for k, v in _escapes: |
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141 s = s.replace(k, v) |
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142 return s |
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143 |
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144 def json(obj): |
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145 if obj is None or obj is False or obj is True: |
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146 return {None: 'null', False: 'false', True: 'true'}[obj] |
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147 elif isinstance(obj, int) or isinstance(obj, float): |
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148 return str(obj) |
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149 elif isinstance(obj, str): |
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150 return '"%s"' % jsonescape(obj) |
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151 elif isinstance(obj, unicode): |
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152 return json(obj.encode('utf-8')) |
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153 elif hasattr(obj, 'keys'): |
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154 out = [] |
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155 for k, v in obj.iteritems(): |
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156 s = '%s: %s' % (json(k), json(v)) |
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157 out.append(s) |
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158 return '{' + ', '.join(out) + '}' |
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159 elif hasattr(obj, '__iter__'): |
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160 out = [] |
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161 for i in obj: |
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162 out.append(json(i)) |
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163 return '[' + ', '.join(out) + ']' |
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164 else: |
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165 raise TypeError('cannot encode type %s' % obj.__class__.__name__) |
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166 |
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167 def stripdir(text): |
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168 '''Treat the text as path and strip a directory level, if possible.''' |
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169 dir = os.path.dirname(text) |
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170 if dir == "": |
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171 return os.path.basename(text) |
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172 else: |
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173 return dir |
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174 |
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175 def nonempty(str): |
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176 return str or "(none)" |
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177 |
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178 filters = { |
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179 "addbreaks": nl2br, |
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180 "basename": os.path.basename, |
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181 "stripdir": stripdir, |
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182 "age": age, |
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183 "date": lambda x: util.datestr(x), |
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184 "domain": domain, |
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185 "email": util.email, |
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186 "escape": lambda x: cgi.escape(x, True), |
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187 "fill68": lambda x: fill(x, width=68), |
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188 "fill76": lambda x: fill(x, width=76), |
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189 "firstline": firstline, |
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190 "tabindent": lambda x: indent(x, '\t'), |
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191 "hgdate": lambda x: "%d %d" % x, |
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192 "isodate": lambda x: util.datestr(x, '%Y-%m-%d %H:%M %1%2'), |
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193 "isodatesec": lambda x: util.datestr(x, '%Y-%m-%d %H:%M:%S %1%2'), |
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194 "json": json, |
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195 "jsonescape": jsonescape, |
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196 "localdate": lambda x: (x[0], util.makedate()[1]), |
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197 "nonempty": nonempty, |
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198 "obfuscate": obfuscate, |
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199 "permissions": permissions, |
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200 "person": person, |
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201 "rfc822date": lambda x: util.datestr(x, "%a, %d %b %Y %H:%M:%S %1%2"), |
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202 "rfc3339date": lambda x: util.datestr(x, "%Y-%m-%dT%H:%M:%S%1:%2"), |
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203 "short": lambda x: x[:12], |
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204 "shortdate": util.shortdate, |
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205 "stringify": stringify, |
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206 "strip": lambda x: x.strip(), |
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207 "urlescape": lambda x: urllib.quote(x), |
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208 "user": lambda x: util.shortuser(x), |
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209 "stringescape": lambda x: x.encode('string_escape'), |
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210 "xmlescape": xmlescape, |
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211 } |