Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/templater.py @ 4641:54b735135fd3
Document empty environment variables not being passed to hooks under Windows.
author | Patrick Mezard <pmezard@gmail.com> |
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date | Wed, 20 Jun 2007 21:35:41 +0200 |
parents | 66a3fe30f9fc |
children | 35ad84669ca5 |
rev | line source |
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1 # templater.py - template expansion for output |
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2 # |
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3 # Copyright 2005, 2006 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 |
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6 # of the GNU General Public License, incorporated herein by reference. |
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7 |
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8 from demandload import demandload |
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9 from i18n import gettext as _ |
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10 from node import * |
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11 demandload(globals(), "cgi re sys os time urllib util textwrap") |
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12 |
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13 def parsestring(s, quoted=True): |
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14 '''parse a string using simple c-like syntax. |
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15 string must be in quotes if quoted is True.''' |
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16 if quoted: |
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17 if len(s) < 2 or s[0] != s[-1]: |
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18 raise SyntaxError(_('unmatched quotes')) |
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19 return s[1:-1].decode('string_escape') |
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20 |
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21 return s.decode('string_escape') |
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22 |
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23 class templater(object): |
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24 '''template expansion engine. |
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25 |
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26 template expansion works like this. a map file contains key=value |
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27 pairs. if value is quoted, it is treated as string. otherwise, it |
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28 is treated as name of template file. |
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29 |
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30 templater is asked to expand a key in map. it looks up key, and |
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31 looks for strings like this: {foo}. it expands {foo} by looking up |
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32 foo in map, and substituting it. expansion is recursive: it stops |
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33 when there is no more {foo} to replace. |
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34 |
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35 expansion also allows formatting and filtering. |
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36 |
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37 format uses key to expand each item in list. syntax is |
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38 {key%format}. |
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39 |
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40 filter uses function to transform value. syntax is |
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41 {key|filter1|filter2|...}.''' |
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42 |
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43 template_re = re.compile(r"(?:(?:#(?=[\w\|%]+#))|(?:{(?=[\w\|%]+})))" |
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44 r"(\w+)(?:(?:%(\w+))|((?:\|\w+)*))[#}]") |
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45 |
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46 def __init__(self, mapfile, filters={}, defaults={}, cache={}): |
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47 '''set up template engine. |
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48 mapfile is name of file to read map definitions from. |
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49 filters is dict of functions. each transforms a value into another. |
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50 defaults is dict of default map definitions.''' |
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51 self.mapfile = mapfile or 'template' |
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52 self.cache = cache.copy() |
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53 self.map = {} |
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54 self.base = (mapfile and os.path.dirname(mapfile)) or '' |
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55 self.filters = filters |
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56 self.defaults = defaults |
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57 |
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58 if not mapfile: |
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59 return |
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60 i = 0 |
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61 for l in file(mapfile): |
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62 l = l.strip() |
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63 i += 1 |
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64 if not l or l[0] in '#;': continue |
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65 m = re.match(r'([a-zA-Z_][a-zA-Z0-9_]*)\s*=\s*(.+)$', l) |
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66 if m: |
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67 key, val = m.groups() |
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68 if val[0] in "'\"": |
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69 try: |
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70 self.cache[key] = parsestring(val) |
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71 except SyntaxError, inst: |
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72 raise SyntaxError('%s:%s: %s' % |
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73 (mapfile, i, inst.args[0])) |
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74 else: |
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75 self.map[key] = os.path.join(self.base, val) |
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76 else: |
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77 raise SyntaxError(_("%s:%s: parse error") % (mapfile, i)) |
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78 |
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79 def __contains__(self, key): |
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80 return key in self.cache or key in self.map |
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81 |
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82 def __call__(self, t, **map): |
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83 '''perform expansion. |
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84 t is name of map element to expand. |
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85 map is added elements to use during expansion.''' |
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86 if not self.cache.has_key(t): |
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87 try: |
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88 self.cache[t] = file(self.map[t]).read() |
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89 except IOError, inst: |
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90 raise IOError(inst.args[0], _('template file %s: %s') % |
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91 (self.map[t], inst.args[1])) |
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92 tmpl = self.cache[t] |
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93 |
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94 while tmpl: |
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95 m = self.template_re.search(tmpl) |
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96 if not m: |
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97 yield tmpl |
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98 break |
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99 |
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100 start, end = m.span(0) |
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101 key, format, fl = m.groups() |
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102 |
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103 if start: |
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104 yield tmpl[:start] |
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105 tmpl = tmpl[end:] |
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106 |
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107 if key in map: |
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108 v = map[key] |
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109 else: |
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110 v = self.defaults.get(key, "") |
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111 if callable(v): |
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112 v = v(**map) |
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113 if format: |
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114 if not hasattr(v, '__iter__'): |
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115 raise SyntaxError(_("Error expanding '%s%s'") |
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116 % (key, format)) |
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117 lm = map.copy() |
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118 for i in v: |
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119 lm.update(i) |
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120 yield self(format, **lm) |
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121 else: |
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122 if fl: |
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123 for f in fl.split("|")[1:]: |
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124 v = self.filters[f](v) |
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125 yield v |
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126 |
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127 agescales = [("second", 1), |
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128 ("minute", 60), |
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129 ("hour", 3600), |
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130 ("day", 3600 * 24), |
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131 ("week", 3600 * 24 * 7), |
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132 ("month", 3600 * 24 * 30), |
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133 ("year", 3600 * 24 * 365)] |
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134 |
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135 agescales.reverse() |
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136 |
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137 def age(date): |
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138 '''turn a (timestamp, tzoff) tuple into an age string.''' |
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139 |
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140 def plural(t, c): |
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141 if c == 1: |
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142 return t |
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143 return t + "s" |
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144 def fmt(t, c): |
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145 return "%d %s" % (c, plural(t, c)) |
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146 |
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147 now = time.time() |
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148 then = date[0] |
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149 delta = max(1, int(now - then)) |
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150 |
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151 for t, s in agescales: |
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152 n = delta / s |
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153 if n >= 2 or s == 1: |
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154 return fmt(t, n) |
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155 |
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156 def stringify(thing): |
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157 '''turn nested template iterator into string.''' |
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158 if hasattr(thing, '__iter__'): |
3654 | 159 return "".join([stringify(t) for t in thing if t is not None]) |
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160 return str(thing) |
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161 |
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162 para_re = None |
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163 space_re = None |
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164 |
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165 def fill(text, width): |
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166 '''fill many paragraphs.''' |
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167 global para_re, space_re |
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168 if para_re is None: |
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169 para_re = re.compile('(\n\n|\n\\s*[-*]\\s*)', re.M) |
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170 space_re = re.compile(r' +') |
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171 |
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172 def findparas(): |
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173 start = 0 |
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174 while True: |
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175 m = para_re.search(text, start) |
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176 if not m: |
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177 w = len(text) |
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178 while w > start and text[w-1].isspace(): w -= 1 |
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179 yield text[start:w], text[w:] |
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180 break |
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181 yield text[start:m.start(0)], m.group(1) |
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182 start = m.end(1) |
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183 |
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184 return "".join([space_re.sub(' ', textwrap.fill(para, width)) + rest |
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185 for para, rest in findparas()]) |
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186 |
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187 def firstline(text): |
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188 '''return the first line of text''' |
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189 try: |
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190 return text.splitlines(1)[0].rstrip('\r\n') |
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191 except IndexError: |
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192 return '' |
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193 |
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194 def isodate(date): |
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195 '''turn a (timestamp, tzoff) tuple into an iso 8631 date and time.''' |
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196 return util.datestr(date, format='%Y-%m-%d %H:%M') |
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197 |
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198 def hgdate(date): |
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199 '''turn a (timestamp, tzoff) tuple into an hg cset timestamp.''' |
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200 return "%d %d" % date |
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201 |
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202 def nl2br(text): |
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203 '''replace raw newlines with xhtml line breaks.''' |
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204 return text.replace('\n', '<br/>\n') |
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205 |
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206 def obfuscate(text): |
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207 text = unicode(text, util._encoding, 'replace') |
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208 return ''.join(['&#%d;' % ord(c) for c in text]) |
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209 |
1904 | 210 def domain(author): |
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211 '''get domain of author, or empty string if none.''' |
1904 | 212 f = author.find('@') |
213 if f == -1: return '' | |
214 author = author[f+1:] | |
215 f = author.find('>') | |
216 if f >= 0: author = author[:f] | |
217 return author | |
218 | |
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219 def email(author): |
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220 '''get email of author.''' |
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221 r = author.find('>') |
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222 if r == -1: r = None |
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223 return author[author.find('<')+1:r] |
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224 |
1904 | 225 def person(author): |
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226 '''get name of author, or else username.''' |
1904 | 227 f = author.find('<') |
228 if f == -1: return util.shortuser(author) | |
229 return author[:f].rstrip() | |
230 | |
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231 def shortdate(date): |
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232 '''turn (timestamp, tzoff) tuple into iso 8631 date.''' |
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233 return util.datestr(date, format='%Y-%m-%d', timezone=False) |
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234 |
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235 def indent(text, prefix): |
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236 '''indent each non-empty line of text after first with prefix.''' |
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237 lines = text.splitlines() |
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238 num_lines = len(lines) |
3638
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parents:
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239 def indenter(): |
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240 for i in xrange(num_lines): |
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parents:
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241 l = lines[i] |
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242 if i and l.strip(): |
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243 yield prefix |
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parents:
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244 yield l |
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parents:
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245 if i < num_lines - 1 or text.endswith('\n'): |
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parents:
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246 yield '\n' |
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247 return "".join(indenter()) |
1987
04c17fc39c84
add changelog style to command line template.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1975
diff
changeset
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248 |
1896
f8f818a04f5b
move hgweb template code out to templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
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249 common_filters = { |
1904 | 250 "addbreaks": nl2br, |
2191
c2e43535d4d1
make templater bit more flexible and efficient for external users.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2189
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251 "basename": os.path.basename, |
1896
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move hgweb template code out to templater
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parents:
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252 "age": age, |
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parents:
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253 "date": lambda x: util.datestr(x), |
1905
0c760737b996
improve template errors when something is wrong.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1904
diff
changeset
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254 "domain": domain, |
1987
04c17fc39c84
add changelog style to command line template.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1975
diff
changeset
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255 "email": email, |
1904 | 256 "escape": lambda x: cgi.escape(x, True), |
1987
04c17fc39c84
add changelog style to command line template.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1975
diff
changeset
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257 "fill68": lambda x: fill(x, width=68), |
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parents:
1975
diff
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258 "fill76": lambda x: fill(x, width=76), |
2559
bf67d0f6531c
templater.firstline should handle empty strings
Brendan Cully <brendan@kublai.com>
parents:
2539
diff
changeset
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259 "firstline": firstline, |
1987
04c17fc39c84
add changelog style to command line template.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1975
diff
changeset
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260 "tabindent": lambda x: indent(x, '\t'), |
2519
deb466fa6957
add a new template function 'hgdate'
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
2470
diff
changeset
|
261 "hgdate": hgdate, |
1906
9dec2479622d
add iso date template filter.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1905
diff
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262 "isodate": isodate, |
1896
f8f818a04f5b
move hgweb template code out to templater
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parents:
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263 "obfuscate": obfuscate, |
1912
b288b4bb8448
hide some functions behind lambdas, so demandload is useful.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1909
diff
changeset
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264 "permissions": lambda x: x and "-rwxr-xr-x" or "-rw-r--r--", |
1904 | 265 "person": person, |
266 "rfc822date": lambda x: util.datestr(x, "%a, %d %b %Y %H:%M:%S"), | |
1912
b288b4bb8448
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1909
diff
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267 "short": lambda x: x[:12], |
1987
04c17fc39c84
add changelog style to command line template.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1975
diff
changeset
|
268 "shortdate": shortdate, |
04c17fc39c84
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1975
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269 "stringify": stringify, |
1904 | 270 "strip": lambda x: x.strip(), |
1912
b288b4bb8448
hide some functions behind lambdas, so demandload is useful.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1909
diff
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271 "urlescape": lambda x: urllib.quote(x), |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1909
diff
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272 "user": lambda x: util.shortuser(x), |
3457
fab28100ea88
Added extra changeset info to templater and map-cmdline.default.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3456
diff
changeset
|
273 "stringescape": lambda x: x.encode('string_escape'), |
1896
f8f818a04f5b
move hgweb template code out to templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
changeset
|
274 } |
1897
58b6784cf9f1
move hgweb.templatepath into templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1896
diff
changeset
|
275 |
1899
888d298ddb91
many small changes to templater.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1897
diff
changeset
|
276 def templatepath(name=None): |
1909
37b9f80a5fbb
add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1906
diff
changeset
|
277 '''return location of template file or directory (if no name). |
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parents:
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diff
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|
278 returns None if not found.''' |
2189
e3eba577a0ae
move changeset_templater into templater module.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2001
diff
changeset
|
279 |
2001
a439b7b51530
Windows py2exe version didn't handle names given to templatepath() correctly
Lee Cantey <lcantey@gmail.com>
parents:
1987
diff
changeset
|
280 # executable version (py2exe) doesn't support __file__ |
a439b7b51530
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Lee Cantey <lcantey@gmail.com>
parents:
1987
diff
changeset
|
281 if hasattr(sys, 'frozen'): |
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parents:
1987
diff
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|
282 module = sys.executable |
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parents:
1987
diff
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|
283 else: |
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Lee Cantey <lcantey@gmail.com>
parents:
1987
diff
changeset
|
284 module = __file__ |
1899
888d298ddb91
many small changes to templater.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1897
diff
changeset
|
285 for f in 'templates', '../templates': |
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parents:
1897
diff
changeset
|
286 fl = f.split('/') |
888d298ddb91
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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diff
changeset
|
287 if name: fl.append(name) |
2001
a439b7b51530
Windows py2exe version didn't handle names given to templatepath() correctly
Lee Cantey <lcantey@gmail.com>
parents:
1987
diff
changeset
|
288 p = os.path.join(os.path.dirname(module), *fl) |
1899
888d298ddb91
many small changes to templater.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1897
diff
changeset
|
289 if (name and os.path.exists(p)) or os.path.isdir(p): |
1897
58b6784cf9f1
move hgweb.templatepath into templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1896
diff
changeset
|
290 return os.path.normpath(p) |
2189
e3eba577a0ae
move changeset_templater into templater module.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2001
diff
changeset
|
291 |