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annotate mercurial/templatefilters.py @ 25812:68822b7cdd01
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author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Wed, 11 Jul 2012 20:48:51 -0400 |
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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 |
10263 | 6 # GNU General Public License version 2 or any later version. |
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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 import hbisect |
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11 import templatekw |
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12 |
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13 def addbreaks(text): |
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14 """:addbreaks: Any text. Add an XHTML "<br />" tag before the end of |
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15 every line except the last. |
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16 """ |
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17 return text.replace('\n', '<br/>\n') |
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18 |
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19 agescales = [("year", 3600 * 24 * 365, 'Y'), |
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20 ("month", 3600 * 24 * 30, 'M'), |
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21 ("week", 3600 * 24 * 7, 'W'), |
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22 ("day", 3600 * 24, 'd'), |
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23 ("hour", 3600, 'h'), |
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24 ("minute", 60, 'm'), |
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25 ("second", 1, 's')] |
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26 |
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27 def age(date, abbrev=False): |
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28 """:age: Date. Returns a human-readable date/time difference between the |
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29 given date/time and the current date/time. |
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30 """ |
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31 |
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32 def plural(t, c): |
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33 if c == 1: |
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34 return t |
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35 return t + "s" |
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36 def fmt(t, c, a): |
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37 if abbrev: |
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38 return "%d%s" % (c, a) |
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39 return "%d %s" % (c, plural(t, c)) |
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40 |
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41 now = time.time() |
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42 then = date[0] |
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43 future = False |
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44 if then > now: |
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45 future = True |
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46 delta = max(1, int(then - now)) |
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47 if delta > agescales[0][1] * 30: |
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48 return 'in the distant future' |
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49 else: |
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50 delta = max(1, int(now - then)) |
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51 if delta > agescales[0][1] * 2: |
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52 return util.shortdate(date) |
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53 |
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54 for t, s, a in agescales: |
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55 n = delta // s |
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56 if n >= 2 or s == 1: |
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57 if future: |
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58 return '%s from now' % fmt(t, n, a) |
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59 return '%s ago' % fmt(t, n, a) |
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60 |
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61 def basename(path): |
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62 """:basename: Any text. Treats the text as a path, and returns the last |
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63 component of the path after splitting by the path separator |
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64 (ignoring trailing separators). For example, "foo/bar/baz" becomes |
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65 "baz" and "foo/bar//" becomes "bar". |
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66 """ |
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67 return os.path.basename(path) |
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68 |
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69 def count(i): |
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70 """:count: List or text. Returns the length as an integer.""" |
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71 return len(i) |
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72 |
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73 def datefilter(text): |
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74 """:date: Date. Returns a date in a Unix date format, including the |
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75 timezone: "Mon Sep 04 15:13:13 2006 0700". |
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76 """ |
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77 return util.datestr(text) |
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78 |
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79 def domain(author): |
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80 """:domain: Any text. Finds the first string that looks like an email |
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81 address, and extracts just the domain component. Example: ``User |
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82 <user@example.com>`` becomes ``example.com``. |
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83 """ |
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84 f = author.find('@') |
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85 if f == -1: |
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86 return '' |
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87 author = author[f + 1:] |
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88 f = author.find('>') |
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89 if f >= 0: |
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90 author = author[:f] |
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91 return author |
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92 |
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93 def email(text): |
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94 """:email: Any text. Extracts the first string that looks like an email |
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95 address. Example: ``User <user@example.com>`` becomes |
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96 ``user@example.com``. |
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97 """ |
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98 return util.email(text) |
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99 |
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100 def escape(text): |
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101 """:escape: Any text. Replaces the special XML/XHTML characters "&", "<" |
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102 and ">" with XML entities, and filters out NUL characters. |
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103 """ |
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104 return cgi.escape(text.replace('\0', ''), True) |
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105 |
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106 para_re = None |
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107 space_re = None |
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108 |
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109 def fill(text, width, initindent='', hangindent=''): |
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110 '''fill many paragraphs with optional indentation.''' |
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111 global para_re, space_re |
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112 if para_re is None: |
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113 para_re = re.compile('(\n\n|\n\\s*[-*]\\s*)', re.M) |
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114 space_re = re.compile(r' +') |
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115 |
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116 def findparas(): |
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117 start = 0 |
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118 while True: |
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119 m = para_re.search(text, start) |
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120 if not m: |
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121 uctext = unicode(text[start:], encoding.encoding) |
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122 w = len(uctext) |
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123 while 0 < w and uctext[w - 1].isspace(): |
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124 w -= 1 |
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125 yield (uctext[:w].encode(encoding.encoding), |
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126 uctext[w:].encode(encoding.encoding)) |
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127 break |
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128 yield text[start:m.start(0)], m.group(1) |
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129 start = m.end(1) |
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130 |
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131 return "".join([util.wrap(space_re.sub(' ', util.wrap(para, width)), |
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132 width, initindent, hangindent) + rest |
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133 for para, rest in findparas()]) |
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134 |
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135 def fill68(text): |
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136 """:fill68: Any text. Wraps the text to fit in 68 columns.""" |
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137 return fill(text, 68) |
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138 |
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139 def fill76(text): |
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140 """:fill76: Any text. Wraps the text to fit in 76 columns.""" |
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141 return fill(text, 76) |
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142 |
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143 def firstline(text): |
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144 """:firstline: Any text. Returns the first line of text.""" |
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145 try: |
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146 return text.splitlines(True)[0].rstrip('\r\n') |
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147 except IndexError: |
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148 return '' |
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149 |
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150 def hexfilter(text): |
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151 """:hex: Any text. Convert a binary Mercurial node identifier into |
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152 its long hexadecimal representation. |
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153 """ |
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154 return node.hex(text) |
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155 |
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156 def hgdate(text): |
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157 """:hgdate: Date. Returns the date as a pair of numbers: "1157407993 |
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158 25200" (Unix timestamp, timezone offset). |
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159 """ |
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160 return "%d %d" % text |
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161 |
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162 def isodate(text): |
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163 """:isodate: Date. Returns the date in ISO 8601 format: "2009-08-18 13:00 |
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164 +0200". |
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165 """ |
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166 return util.datestr(text, '%Y-%m-%d %H:%M %1%2') |
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167 |
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168 def isodatesec(text): |
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169 """:isodatesec: Date. Returns the date in ISO 8601 format, including |
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170 seconds: "2009-08-18 13:00:13 +0200". See also the rfc3339date |
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171 filter. |
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172 """ |
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173 return util.datestr(text, '%Y-%m-%d %H:%M:%S %1%2') |
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174 |
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175 def indent(text, prefix): |
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176 '''indent each non-empty line of text after first with prefix.''' |
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177 lines = text.splitlines() |
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178 num_lines = len(lines) |
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179 endswithnewline = text[-1:] == '\n' |
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180 def indenter(): |
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181 for i in xrange(num_lines): |
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182 l = lines[i] |
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183 if i and l.strip(): |
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184 yield prefix |
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185 yield l |
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186 if i < num_lines - 1 or endswithnewline: |
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187 yield '\n' |
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188 return "".join(indenter()) |
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189 |
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190 def json(obj): |
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191 if obj is None or obj is False or obj is True: |
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192 return {None: 'null', False: 'false', True: 'true'}[obj] |
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193 elif isinstance(obj, int) or isinstance(obj, float): |
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194 return str(obj) |
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195 elif isinstance(obj, str): |
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196 u = unicode(obj, encoding.encoding, 'replace') |
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197 return '"%s"' % jsonescape(u) |
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198 elif isinstance(obj, unicode): |
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199 return '"%s"' % jsonescape(obj) |
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200 elif util.safehasattr(obj, 'keys'): |
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201 out = [] |
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202 for k, v in sorted(obj.iteritems()): |
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203 s = '%s: %s' % (json(k), json(v)) |
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204 out.append(s) |
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205 return '{' + ', '.join(out) + '}' |
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206 elif util.safehasattr(obj, '__iter__'): |
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207 out = [] |
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208 for i in obj: |
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209 out.append(json(i)) |
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210 return '[' + ', '.join(out) + ']' |
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211 elif util.safehasattr(obj, '__call__'): |
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212 return json(obj()) |
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213 else: |
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214 raise TypeError('cannot encode type %s' % obj.__class__.__name__) |
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215 |
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216 def _uescape(c): |
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217 if ord(c) < 0x80: |
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218 return c |
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219 else: |
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220 return '\\u%04x' % ord(c) |
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221 |
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222 _escapes = [ |
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223 ('\\', '\\\\'), ('"', '\\"'), ('\t', '\\t'), ('\n', '\\n'), |
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224 ('\r', '\\r'), ('\f', '\\f'), ('\b', '\\b'), |
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225 ('<', '\\u003c'), ('>', '\\u003e'), ('\0', '\\u0000') |
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226 ] |
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227 |
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228 def jsonescape(s): |
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229 for k, v in _escapes: |
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230 s = s.replace(k, v) |
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231 return ''.join(_uescape(c) for c in s) |
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232 |
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233 def localdate(text): |
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234 """:localdate: Date. Converts a date to local date.""" |
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235 return (util.parsedate(text)[0], util.makedate()[1]) |
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236 |
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237 def lower(text): |
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238 """:lower: Any text. Converts the text to lowercase.""" |
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239 return encoding.lower(text) |
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240 |
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241 def nonempty(str): |
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242 """:nonempty: Any text. Returns '(none)' if the string is empty.""" |
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243 return str or "(none)" |
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244 |
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245 def obfuscate(text): |
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246 """:obfuscate: Any text. Returns the input text rendered as a sequence of |
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247 XML entities. |
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248 """ |
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249 text = unicode(text, encoding.encoding, 'replace') |
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250 return ''.join(['&#%d;' % ord(c) for c in text]) |
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251 |
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252 def permissions(flags): |
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253 if "l" in flags: |
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254 return "lrwxrwxrwx" |
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255 if "x" in flags: |
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256 return "-rwxr-xr-x" |
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257 return "-rw-r--r--" |
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258 |
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259 def person(author): |
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260 """:person: Any text. Returns the name before an email address, |
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261 interpreting it as per RFC 5322. |
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262 |
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263 >>> person('foo@bar') |
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264 'foo' |
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265 >>> person('Foo Bar <foo@bar>') |
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266 'Foo Bar' |
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267 >>> person('"Foo Bar" <foo@bar>') |
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268 'Foo Bar' |
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269 >>> person('"Foo \"buz\" Bar" <foo@bar>') |
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270 'Foo "buz" Bar' |
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271 >>> # The following are invalid, but do exist in real-life |
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272 ... |
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273 >>> person('Foo "buz" Bar <foo@bar>') |
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274 'Foo "buz" Bar' |
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275 >>> person('"Foo Bar <foo@bar>') |
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276 'Foo Bar' |
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277 """ |
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278 if '@' not in author: |
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279 return author |
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280 f = author.find('<') |
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281 if f != -1: |
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282 return author[:f].strip(' "').replace('\\"', '"') |
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283 f = author.find('@') |
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284 return author[:f].replace('.', ' ') |
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285 |
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286 def revescape(text): |
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287 """:revescape: Any text. Escapes all "special" characters, except @. |
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288 Forward slashes are escaped twice to prevent web servers from prematurely |
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289 unescaping them. For example, "@foo bar/baz" becomes "@foo%20bar%252Fbaz". |
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290 """ |
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291 return urllib.quote(text, safe='/@').replace('/', '%252F') |
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292 |
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293 def rfc3339date(text): |
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294 """:rfc3339date: Date. Returns a date using the Internet date format |
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295 specified in RFC 3339: "2009-08-18T13:00:13+02:00". |
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296 """ |
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297 return util.datestr(text, "%Y-%m-%dT%H:%M:%S%1:%2") |
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298 |
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299 def rfc822date(text): |
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300 """:rfc822date: Date. Returns a date using the same format used in email |
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301 headers: "Tue, 18 Aug 2009 13:00:13 +0200". |
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302 """ |
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303 return util.datestr(text, "%a, %d %b %Y %H:%M:%S %1%2") |
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304 |
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305 def short(text): |
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306 """:short: Changeset hash. Returns the short form of a changeset hash, |
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307 i.e. a 12 hexadecimal digit string. |
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308 """ |
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309 return text[:12] |
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310 |
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311 def shortbisect(text): |
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312 """:shortbisect: Any text. Treats `text` as a bisection status, and |
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313 returns a single-character representing the status (G: good, B: bad, |
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314 S: skipped, U: untested, I: ignored). Returns single space if `text` |
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315 is not a valid bisection status. |
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316 """ |
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317 return hbisect.shortlabel(text) or ' ' |
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318 |
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319 def shortdate(text): |
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320 """:shortdate: Date. Returns a date like "2006-09-18".""" |
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321 return util.shortdate(text) |
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322 |
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323 def splitlines(text): |
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324 """:splitlines: Any text. Split text into a list of lines.""" |
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325 return templatekw.showlist('line', text.splitlines(), 'lines') |
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326 |
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327 def stringescape(text): |
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328 return text.encode('string_escape') |
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329 |
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330 def stringify(thing): |
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331 """:stringify: Any type. Turns the value into text by converting values into |
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332 text and concatenating them. |
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333 """ |
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334 if util.safehasattr(thing, '__iter__') and not isinstance(thing, str): |
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335 return "".join([stringify(t) for t in thing if t is not None]) |
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336 if thing is None: |
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337 return "" |
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338 return str(thing) |
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339 |
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340 def strip(text): |
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341 """:strip: Any text. Strips all leading and trailing whitespace.""" |
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342 return text.strip() |
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343 |
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344 def stripdir(text): |
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345 """:stripdir: Treat the text as path and strip a directory level, if |
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346 possible. For example, "foo" and "foo/bar" becomes "foo". |
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347 """ |
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348 dir = os.path.dirname(text) |
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349 if dir == "": |
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350 return os.path.basename(text) |
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351 else: |
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352 return dir |
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353 |
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354 def tabindent(text): |
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355 """:tabindent: Any text. Returns the text, with every non-empty line |
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356 except the first starting with a tab character. |
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357 """ |
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358 return indent(text, '\t') |
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359 |
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360 def upper(text): |
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361 """:upper: Any text. Converts the text to uppercase.""" |
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362 return encoding.upper(text) |
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363 |
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364 def urlescape(text): |
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365 """:urlescape: Any text. Escapes all "special" characters. For example, |
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366 "foo bar" becomes "foo%20bar". |
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367 """ |
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368 return urllib.quote(text) |
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369 |
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370 def userfilter(text): |
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371 """:user: Any text. Returns a short representation of a user name or email |
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372 address.""" |
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373 return util.shortuser(text) |
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374 |
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375 def emailuser(text): |
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376 """:emailuser: Any text. Returns the user portion of an email address.""" |
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377 return util.emailuser(text) |
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378 |
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379 def xmlescape(text): |
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380 text = (text |
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381 .replace('&', '&') |
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382 .replace('<', '<') |
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383 .replace('>', '>') |
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384 .replace('"', '"') |
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385 .replace("'", ''')) # ' invalid in HTML |
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386 return re.sub('[\x00-\x08\x0B\x0C\x0E-\x1F]', ' ', text) |
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387 |
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388 filters = { |
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389 "addbreaks": addbreaks, |
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390 "age": age, |
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391 "basename": basename, |
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392 "count": count, |
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393 "date": datefilter, |
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394 "domain": domain, |
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395 "email": email, |
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396 "escape": escape, |
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397 "fill68": fill68, |
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398 "fill76": fill76, |
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399 "firstline": firstline, |
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400 "hex": hexfilter, |
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401 "hgdate": hgdate, |
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402 "isodate": isodate, |
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403 "isodatesec": isodatesec, |
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404 "json": json, |
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405 "jsonescape": jsonescape, |
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406 "localdate": localdate, |
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407 "lower": lower, |
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408 "nonempty": nonempty, |
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409 "obfuscate": obfuscate, |
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410 "permissions": permissions, |
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411 "person": person, |
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412 "revescape": revescape, |
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413 "rfc3339date": rfc3339date, |
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414 "rfc822date": rfc822date, |
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415 "short": short, |
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416 "shortbisect": shortbisect, |
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417 "shortdate": shortdate, |
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418 "splitlines": splitlines, |
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419 "stringescape": stringescape, |
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420 "stringify": stringify, |
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421 "strip": strip, |
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422 "stripdir": stripdir, |
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423 "tabindent": tabindent, |
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424 "upper": upper, |
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425 "urlescape": urlescape, |
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426 "user": userfilter, |
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427 "emailuser": emailuser, |
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Jesse Glick <jesse.glick@sun.com>
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428 "xmlescape": xmlescape, |
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429 } |
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430 |
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431 def websub(text, websubtable): |
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432 """:websub: Any text. Only applies to hgweb. Applies the regular |
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433 expression replacements defined in the websub section. |
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434 """ |
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435 if websubtable: |
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436 for regexp, format in websubtable: |
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437 text = regexp.sub(format, text) |
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438 return text |
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439 |
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440 # tell hggettext to extract docstrings from these functions: |
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441 i18nfunctions = filters.values() |