Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/templater.py @ 2061:5987c1eac2ce
support nested repositories.
mercurial will not recurse into a subdirectory that contains a .hg
directory. it is treated as a separate repository.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Fri, 31 Mar 2006 17:00:09 -0800 |
parents | a439b7b51530 |
children | e3eba577a0ae |
rev | line source |
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1909
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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 import re |
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9 from demandload import demandload |
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10 from i18n import gettext as _ |
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11 demandload(globals(), "cStringIO cgi re sys os time urllib util textwrap") |
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12 |
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13 esctable = { |
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14 '\\': '\\', |
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15 'r': '\r', |
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16 't': '\t', |
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17 'n': '\n', |
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18 'v': '\v', |
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19 } |
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20 |
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21 def parsestring(s, quoted=True): |
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22 '''parse a string using simple c-like syntax. |
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23 string must be in quotes if quoted is True.''' |
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24 fp = cStringIO.StringIO() |
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25 if quoted: |
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26 first = s[0] |
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27 if len(s) < 2: raise SyntaxError(_('string too short')) |
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28 if first not in "'\"": raise SyntaxError(_('invalid quote')) |
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29 if s[-1] != first: raise SyntaxError(_('unmatched quotes')) |
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30 s = s[1:-1] |
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31 escape = False |
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32 for c in s: |
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33 if escape: |
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34 fp.write(esctable.get(c, c)) |
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35 escape = False |
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36 elif c == '\\': escape = True |
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37 elif quoted and c == first: raise SyntaxError(_('string ends early')) |
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38 else: fp.write(c) |
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39 if escape: raise SyntaxError(_('unterminated escape')) |
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40 return fp.getvalue() |
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41 |
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42 class templater(object): |
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43 '''template expansion engine. |
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44 |
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45 template expansion works like this. a map file contains key=value |
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46 pairs. if value is quoted, it is treated as string. otherwise, it |
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47 is treated as name of template file. |
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48 |
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49 templater is asked to expand a key in map. it looks up key, and |
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50 looks for atrings like this: {foo}. it expands {foo} by looking up |
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51 foo in map, and substituting it. expansion is recursive: it stops |
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52 when there is no more {foo} to replace. |
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53 |
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54 expansion also allows formatting and filtering. |
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55 |
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56 format uses key to expand each item in list. syntax is |
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57 {key%format}. |
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58 |
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59 filter uses function to transform value. syntax is |
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60 {key|filter1|filter2|...}.''' |
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61 |
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62 def __init__(self, mapfile, filters={}, defaults={}, cache={}): |
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63 '''set up template engine. |
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64 mapfile is name of file to read map definitions from. |
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65 filters is dict of functions. each transforms a value into another. |
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66 defaults is dict of default map definitions.''' |
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67 self.mapfile = mapfile or 'template' |
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68 self.cache = cache.copy() |
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69 self.map = {} |
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70 self.base = (mapfile and os.path.dirname(mapfile)) or '' |
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71 self.filters = filters |
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72 self.defaults = defaults |
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73 |
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74 if not mapfile: |
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75 return |
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76 i = 0 |
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77 for l in file(mapfile): |
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78 l = l.strip() |
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79 i += 1 |
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80 if not l or l[0] in '#;': continue |
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81 m = re.match(r'([a-zA-Z_][a-zA-Z0-9_]*)\s*=\s*(.+)$', l) |
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82 if m: |
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83 key, val = m.groups() |
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84 if val[0] in "'\"": |
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85 try: |
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86 self.cache[key] = parsestring(val) |
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87 except SyntaxError, inst: |
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88 raise SyntaxError('%s:%s: %s' % |
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89 (mapfile, i, inst.args[0])) |
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90 else: |
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91 self.map[key] = os.path.join(self.base, val) |
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92 else: |
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93 raise SyntaxError(_("%s:%s: parse error") % (mapfile, i)) |
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94 |
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95 def __contains__(self, key): |
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96 return key in self.cache |
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97 |
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98 def __call__(self, t, **map): |
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99 '''perform expansion. |
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100 t is name of map element to expand. |
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101 map is added elements to use during expansion.''' |
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102 m = self.defaults.copy() |
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103 m.update(map) |
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104 try: |
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105 tmpl = self.cache[t] |
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106 except KeyError: |
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107 try: |
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108 tmpl = self.cache[t] = file(self.map[t]).read() |
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109 except IOError, inst: |
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110 raise IOError(inst.args[0], _('template file %s: %s') % |
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111 (self.map[t], inst.args[1])) |
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112 return self.template(tmpl, self.filters, **m) |
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113 |
1904 | 114 template_re = re.compile(r"[#{]([a-zA-Z_][a-zA-Z0-9_]*)" |
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115 r"((%[a-zA-Z_][a-zA-Z0-9_]*)*)" |
1904 | 116 r"((\|[a-zA-Z_][a-zA-Z0-9_]*)*)[#}]") |
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117 |
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118 def template(self, tmpl, filters={}, **map): |
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119 lm = map.copy() |
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120 while tmpl: |
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121 m = self.template_re.search(tmpl) |
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122 if m: |
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123 start, end = m.span(0) |
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124 s, e = tmpl[start], tmpl[end - 1] |
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125 key = m.group(1) |
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126 if ((s == '#' and e != '#') or (s == '{' and e != '}')): |
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127 raise SyntaxError(_("'%s'/'%s' mismatch expanding '%s'") % |
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128 (s, e, key)) |
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129 if start: |
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130 yield tmpl[:start] |
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131 v = map.get(key, "") |
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132 v = callable(v) and v(**map) or v |
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133 |
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134 format = m.group(2) |
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135 fl = m.group(4) |
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136 |
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137 if format: |
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138 q = v.__iter__ |
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139 for i in q(): |
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140 lm.update(i) |
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141 yield self(format[1:], **lm) |
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142 |
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143 v = "" |
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144 |
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145 elif fl: |
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146 for f in fl.split("|")[1:]: |
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147 v = filters[f](v) |
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148 |
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149 yield v |
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150 tmpl = tmpl[end:] |
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151 else: |
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152 yield tmpl |
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153 break |
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154 |
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155 agescales = [("second", 1), |
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156 ("minute", 60), |
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157 ("hour", 3600), |
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158 ("day", 3600 * 24), |
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159 ("week", 3600 * 24 * 7), |
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160 ("month", 3600 * 24 * 30), |
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161 ("year", 3600 * 24 * 365)] |
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162 |
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163 agescales.reverse() |
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164 |
1909
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165 def age(date): |
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166 '''turn a (timestamp, tzoff) tuple into an age string.''' |
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167 |
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168 def plural(t, c): |
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169 if c == 1: |
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170 return t |
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171 return t + "s" |
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172 def fmt(t, c): |
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173 return "%d %s" % (c, plural(t, c)) |
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174 |
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175 now = time.time() |
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176 then = date[0] |
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177 delta = max(1, int(now - then)) |
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178 |
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179 for t, s in agescales: |
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180 n = delta / s |
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181 if n >= 2 or s == 1: |
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182 return fmt(t, n) |
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183 |
1987
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184 def stringify(thing): |
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185 '''turn nested template iterator into string.''' |
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186 cs = cStringIO.StringIO() |
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187 def walk(things): |
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188 for t in things: |
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189 if hasattr(t, '__iter__'): |
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190 walk(t) |
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191 else: |
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192 cs.write(t) |
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193 walk(thing) |
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194 return cs.getvalue() |
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195 |
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196 para_re = re.compile('(\n\n|\n\\s*[-*]\\s*)', re.M) |
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197 space_re = re.compile(r' +') |
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198 |
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199 def fill(text, width): |
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200 '''fill many paragraphs.''' |
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201 def findparas(): |
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202 start = 0 |
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203 while True: |
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204 m = para_re.search(text, start) |
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205 if not m: |
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206 w = len(text) |
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207 while w > start and text[w-1].isspace(): w -= 1 |
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208 yield text[start:w], text[w:] |
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209 break |
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210 yield text[start:m.start(0)], m.group(1) |
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211 start = m.end(1) |
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212 |
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213 fp = cStringIO.StringIO() |
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214 for para, rest in findparas(): |
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215 fp.write(space_re.sub(' ', textwrap.fill(para, width))) |
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216 fp.write(rest) |
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217 return fp.getvalue() |
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218 |
1906
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219 def isodate(date): |
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220 '''turn a (timestamp, tzoff) tuple into an iso 8631 date and time.''' |
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221 return util.datestr(date, format='%Y-%m-%d %H:%M') |
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222 |
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223 def nl2br(text): |
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224 '''replace raw newlines with xhtml line breaks.''' |
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225 return text.replace('\n', '<br/>\n') |
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226 |
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227 def obfuscate(text): |
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228 return ''.join(['&#%d;' % ord(c) for c in text]) |
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229 |
1904 | 230 def domain(author): |
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231 '''get domain of author, or empty string if none.''' |
1904 | 232 f = author.find('@') |
233 if f == -1: return '' | |
234 author = author[f+1:] | |
235 f = author.find('>') | |
236 if f >= 0: author = author[:f] | |
237 return author | |
238 | |
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239 def email(author): |
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240 '''get email of author.''' |
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241 r = author.find('>') |
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242 if r == -1: r = None |
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243 return author[author.find('<')+1:r] |
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244 |
1904 | 245 def person(author): |
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246 '''get name of author, or else username.''' |
1904 | 247 f = author.find('<') |
248 if f == -1: return util.shortuser(author) | |
249 return author[:f].rstrip() | |
250 | |
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251 def shortdate(date): |
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252 '''turn (timestamp, tzoff) tuple into iso 8631 date.''' |
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253 return util.datestr(date, format='%Y-%m-%d', timezone=False) |
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254 |
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255 def indent(text, prefix): |
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256 '''indent each non-empty line of text after first with prefix.''' |
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257 fp = cStringIO.StringIO() |
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258 lines = text.splitlines() |
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259 num_lines = len(lines) |
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260 for i in xrange(num_lines): |
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261 l = lines[i] |
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262 if i and l.strip(): fp.write(prefix) |
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263 fp.write(l) |
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264 if i < num_lines - 1 or text.endswith('\n'): |
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265 fp.write('\n') |
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266 return fp.getvalue() |
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267 |
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268 common_filters = { |
1904 | 269 "addbreaks": nl2br, |
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270 "age": age, |
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271 "date": lambda x: util.datestr(x), |
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272 "domain": domain, |
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273 "email": email, |
1904 | 274 "escape": lambda x: cgi.escape(x, True), |
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275 "fill68": lambda x: fill(x, width=68), |
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276 "fill76": lambda x: fill(x, width=76), |
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277 "firstline": lambda x: x.splitlines(1)[0].rstrip('\r\n'), |
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278 "tabindent": lambda x: indent(x, '\t'), |
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279 "isodate": isodate, |
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280 "obfuscate": obfuscate, |
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281 "permissions": lambda x: x and "-rwxr-xr-x" or "-rw-r--r--", |
1904 | 282 "person": person, |
283 "rfc822date": lambda x: util.datestr(x, "%a, %d %b %Y %H:%M:%S"), | |
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284 "short": lambda x: x[:12], |
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285 "shortdate": shortdate, |
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286 "stringify": stringify, |
1904 | 287 "strip": lambda x: x.strip(), |
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288 "urlescape": lambda x: urllib.quote(x), |
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289 "user": lambda x: util.shortuser(x), |
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290 } |
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291 |
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292 def templatepath(name=None): |
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293 '''return location of template file or directory (if no name). |
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294 returns None if not found.''' |
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295 # executable version (py2exe) doesn't support __file__ |
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296 if hasattr(sys, 'frozen'): |
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297 module = sys.executable |
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298 else: |
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299 module = __file__ |
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300 for f in 'templates', '../templates': |
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301 fl = f.split('/') |
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302 if name: fl.append(name) |
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303 p = os.path.join(os.path.dirname(module), *fl) |
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304 if (name and os.path.exists(p)) or os.path.isdir(p): |
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305 return os.path.normpath(p) |