Mercurial > hg > decoupage
annotate decoupage/formatters.py @ 77:ebf3d3c39cb7
fix this muthafuckin assertion
author | Jeff Hammel <jhammel@mozilla.com> |
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date | Tue, 16 Apr 2013 00:16:03 -0700 |
parents | 262fb90a54b4 |
children | a8a74f6bcf93 |
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1 #!/usr/bin/env python |
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2 |
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3 import random |
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4 import sys |
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5 from fnmatch import fnmatch |
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6 from pkg_resources import iter_entry_points |
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7 |
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8 ### abstract base classes for formatters |
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9 |
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10 class FormatterBase(object): |
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11 """ |
68 | 12 abstract base class if you want to use __init__ methods |
13 in the form of | |
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14 'arg1, arg2, arg3, kw1=foo, kw2=bar, kw3=baz |
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15 """ |
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16 |
10 | 17 defaults = {} # default values for attrs to be set on the instance |
68 | 18 |
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19 def __init__(self, string): |
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20 self._string = string |
10 | 21 args = [ i.strip() for i in string.split(',')] |
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22 for index, arg in enumerate(args): |
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23 if '=' in arg: |
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24 break |
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25 else: |
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26 self.args = args |
10 | 27 for key, default in self.defaults.items(): |
28 setattr(self, key, default) | |
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29 return |
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30 self.args = args[:index] |
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31 self.kw = dict([i.split('=', 1) for i in args[index:]]) |
10 | 32 for key, default in self.defaults.items(): |
33 value = self.kw.pop(key, default) | |
34 setattr(self, key, value) | |
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35 |
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36 |
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37 ### formatters |
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38 |
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39 class Ignore(object): |
27 | 40 """ |
68 | 41 ignore files of a glob patterns. |
28 | 42 These files will not be linked to in the template. |
27 | 43 e.g. /ignore = .* *.pdf # don't list dotfiles and PDFs |
44 """ | |
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45 |
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46 def __init__(self, ignore): |
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47 self.match = ignore.split() |
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48 |
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49 def __call__(self, request, data): |
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50 _files = [] |
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51 for f in data['files']: |
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52 for pattern in self.match: |
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53 if fnmatch(f['name'], pattern): |
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54 break |
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55 else: |
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56 _files.append(f) |
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57 data['files'] = _files |
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58 |
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59 |
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60 class All(object): |
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61 """ |
68 | 62 only pass files of a certain pattern; |
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63 the inverse of ignore |
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64 calling all with no arguments means only files with descriptions are used |
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65 """ |
68 | 66 |
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67 def __init__(self, pattern): |
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68 self.match = pattern.split() |
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69 |
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70 def __call__(self, request, data): |
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71 _files = [] |
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72 for f in data['files']: |
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73 if self.match: |
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74 for pattern in self.match: |
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75 if fnmatch(f['name'], pattern): |
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76 _files.append(f) |
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77 break |
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78 else: |
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79 # use only files where the description is not None |
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80 if f['description'] is not None: |
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81 _files.append(f) |
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82 data['files'] = _files |
68 | 83 |
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84 class Sort(FormatterBase): |
27 | 85 """ |
68 | 86 determines how to sort the files in a directory; |
27 | 87 right now only by case-insensitive alphabetically |
28 | 88 * reverse : reverse the order of the sorting |
27 | 89 """ |
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90 defaults = {'order': 'name'} |
68 | 91 |
22 | 92 def __init__(self, pattern): |
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93 FormatterBase.__init__(self, pattern) |
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94 self.orders = {'name': self.name, |
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95 'random': self.random, |
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96 } |
68 | 97 # TODO: date |
98 | |
22 | 99 def __call__(self, request, data): |
100 | |
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101 sort = self.orders.get(request.GET.get('order', self.order), self.name) |
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102 data['files'] = sort(data['files']) |
22 | 103 |
104 if 'reverse' in self.args: | |
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105 data['files'] = list(reversed(data['files'])) |
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106 |
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107 def name(self, files): |
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108 return sorted(files, key=lambda x: x['name'].lower()) |
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109 |
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110 def random(self, files): |
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111 random.shuffle(files) |
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112 return files |
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113 |
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114 |
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115 class Order(object): |
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116 """ |
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117 put the files in a particular order |
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118 """ |
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119 def __init__(self, pattern): |
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120 if '=' in pattern: |
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121 key, value = pattern.split('=', 1) |
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122 assert key == 'file' |
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123 self.file = value |
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124 else: |
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125 self.order = [i.strip() for i in pattern.split(',')] |
68 | 126 |
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127 def __call__(self, request, data): |
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128 |
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129 if self.file: |
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130 raise NotImplementedError |
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131 |
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132 files = [] |
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133 file_hash = dict([(i['name'], i) for i in data['files']]) |
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134 for f in self.order: |
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135 files.append(file_hash.get(f, None)) |
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136 files = [ i for i in files if i is not None ] |
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137 |
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138 |
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139 class FilenameDescription(FormatterBase): |
28 | 140 """ |
141 obtain the description from the filename | |
142 the file extension (if any) will be dropped and | |
143 spaces will be substituted for underscores | |
144 """ | |
145 # TODO : deal with CamelCaseFilenames | |
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146 |
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147 separators = ['_', '-'] # space substitute separators |
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148 lesser_words = [ 'or', 'a', 'the', 'on', 'of' ] # unimportant words |
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149 |
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150 def __call__(self, request, data): |
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151 for f in data['files']: |
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152 if f['description'] is None: |
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153 description = f['name'] |
28 | 154 if '.' in description: |
155 description = description.rsplit('.', 1)[0] | |
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156 decription = description.strip('_') |
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157 for separator in self.separators: |
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158 if separator in description: |
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159 description = ' '.join([(i in self.lesser_words) and i or i.title() |
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160 for i in description.split(separator)]) |
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161 description = description[0].upper() + description[1:] |
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162 f['description'] = description |
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163 |
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164 |
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165 class TitleDescription(FormatterBase): |
28 | 166 """ |
68 | 167 splits a description into a title and a description via a separator in |
168 the description. The template will now have an additional variable, | |
28 | 169 'title', per file |
170 Arguments: | |
171 * separator: what separator to use (':' by default) | |
172 """ | |
173 # XXX what about setting the page title? | |
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174 |
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175 defaults = { 'separator': ':' } |
68 | 176 |
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177 def __call__(self, request, data): |
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178 |
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179 # title webpage |
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180 title = self._string |
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181 if ':' in title: |
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182 _title, url = [i.strip() for i in title.split(':', 1)] |
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183 if '://' in url: |
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184 # XXX could also use urlparse |
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185 title = _title |
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186 data['link'] = url |
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187 data['title'] = title |
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188 |
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189 # title files |
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190 for f in data['files']: |
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191 if f['description'] and self.separator in f['description']: |
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192 title, description = f['description'].split(self.separator, 1) |
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193 title = title.strip() |
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194 description = description.strip() |
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195 if not title: |
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196 title = f['name'] |
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197 f['title'] = title |
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198 f['description'] = description |
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199 else: |
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200 f['title'] = f['description'] |
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201 f['description'] = None |
10 | 202 |
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203 class Links(FormatterBase): |
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204 """ |
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205 allow list of links per item: |
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206 foo.html = description of foo; [PDF]=foo.pdf; [TXT]=foo.txt |
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207 """ |
68 | 208 |
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209 fatal = False |
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210 defaults = { 'separator': ';' } |
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211 |
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212 |
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213 def __call__(self, request, data): |
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214 for f in data['files']: |
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215 if f['description'] and self.separator in f['description']: |
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216 description, links = f['description'].split(self.separator, 1) |
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217 links = links.rstrip().split(self.separator) |
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218 |
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219 if not min(['=' in link for link in links]): |
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220 message = """%s |
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221 |
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222 %s: misformatted description: %s (separator: %s)""" % (f, |
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223 self.__class__.__name__, |
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224 description, |
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225 self.separator) |
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226 if self.fatal: |
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227 raise AssertionError(message) |
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228 else: |
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229 print >> sys.stderr, message |
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230 continue |
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231 |
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232 f['description'] = description |
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233 |
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234 links = [link.split('=', 1) for link in links] |
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235 f['links'] = [{'text': text, 'link': link} |
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236 for text, link in links] |
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237 |
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238 |
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239 class Up(object): |
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240 """ |
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241 provides an up link to the path above: |
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242 /up = .. |
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243 """ |
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244 |
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245 def __init__(self, arg): |
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246 self.up = arg.strip() |
68 | 247 |
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248 def __call__(self, request, data): |
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249 path = request.path_info |
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250 if (path != '/') and self.up: |
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251 data['files'].insert(0, {'path': '..', |
65 | 252 'type': 'directory', |
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253 'name': path.rsplit('/', 1)[0] + '/', |
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254 'description': self.up}) |
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255 |
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256 class CSS(object): |
28 | 257 """specify CSS used (whitespace separated list)""" |
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258 |
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259 def __init__(self, arg): |
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260 self.css = arg.split() |
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261 def __call__(self, request, data): |
24 | 262 data['css'] = self.css |
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263 |
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264 class JavaScript(object): |
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265 """specify JS for the page""" |
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266 |
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267 def __init__(self, arg): |
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268 self.scripts = arg.split() |
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269 def __call__(self, request, data): |
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270 data['scripts'] = self.scripts |
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271 |
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272 class Favicon(object): |
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273 """specify favicons for the page""" |
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274 |
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275 def __init__(self, icon): |
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276 self.icon = icon |
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277 def __call__(self, request, data): |
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278 data['icon'] = self.icon |
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279 |
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280 class Include(object): |
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281 """include a file at the top of the body""" |
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282 |
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283 def __init__(self, arg): |
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284 self.include = arg |
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285 def __call__(self, request, data): |
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286 data['include'] = self.include |
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287 |
68 | 288 |
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289 def formatters(): |
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290 formatters = {} |
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291 for entry_point in iter_entry_points('decoupage.formatters'): |
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292 try: |
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293 formatter = entry_point.load() |
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294 except: |
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295 continue |
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296 formatters[entry_point.name] = formatter |
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297 return formatters |
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298 |
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299 def main(args=sys.argv[1:]): |
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300 for name, formatter in formatters().items(): |
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301 print '%s%s' % (name, formatter.__doc__ and ': ' + formatter.__doc__ or '') |
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302 |
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303 if __name__ == '__main__': |
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304 main() |