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annotate decoupage/formatters.py @ 67:fdb77c57bd22

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make sort formatter more extensible and add a random method
author Jeff Hammel <jhammel@mozilla.com>
date Fri, 18 Nov 2011 22:34:08 -0800
parents ac1dc088e37e
children 4094bee13154
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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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8 ### abstract base classes for formatters
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9
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10 class FormatterBase(object):
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11 """
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12 abstract base class if you want to use __init__ methods
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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
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17 defaults = {} # default values for attrs to be set on the instance
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19 def __init__(self, string):
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20 args = [ i.strip() for i in string.split(',')]
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21 for index, arg in enumerate(args):
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22 if '=' in arg:
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23 break
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24 else:
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25 self.args = args
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26 for key, default in self.defaults.items():
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27 setattr(self, key, default)
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28 return
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29 self.args = args[:index]
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30 self.kw = dict([i.split('=', 1) for i in args[index:]])
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31 for key, default in self.defaults.items():
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32 value = self.kw.pop(key, default)
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33 setattr(self, key, value)
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35
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36 ### formatters
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37
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38 class Ignore(object):
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39 """
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40 ignore files of a glob patterns.
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41 These files will not be linked to in the template.
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42 e.g. /ignore = .* *.pdf # don't list dotfiles and PDFs
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43 """
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45 def __init__(self, ignore):
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46 self.match = ignore.split()
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48 def __call__(self, request, data):
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49 _files = []
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50 for f in data['files']:
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51 for pattern in self.match:
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52 if fnmatch(f['name'], pattern):
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53 break
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54 else:
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55 _files.append(f)
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56 data['files'] = _files
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59 class All(object):
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60 """
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61 only pass files of a certain pattern;
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62 the inverse of ignore
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63 calling all with no arguments means only files with descriptions are used
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64 """
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66 def __init__(self, pattern):
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67 self.match = pattern.split()
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69 def __call__(self, request, data):
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70 _files = []
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71 for f in data['files']:
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72 if self.match:
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73 for pattern in self.match:
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74 if fnmatch(f['name'], pattern):
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75 _files.append(f)
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76 break
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77 else:
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78 # use only files where the description is not None
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79 if f['description'] is not None:
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80 _files.append(f)
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81 data['files'] = _files
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82
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83 class Sort(FormatterBase):
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84 """
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85 determines how to sort the files in a directory;
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86 right now only by case-insensitive alphabetically
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87 * reverse : reverse the order of the sorting
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88 """
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89 defaults = {'order': 'name'}
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90
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91 def __init__(self, pattern):
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92 FormatterBase.__init__(self, pattern)
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93 self.orders = {'name': self.name,
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94 'random': self.random,
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95 }
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96
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97 def __call__(self, request, data):
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98
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99 sort = self.orders.get(request.GET.get('order', self.order), self.name)
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100 data['files'] = sort(data['files'])
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101
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102 if 'reverse' in self.args:
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103 data['files'] = list(reversed(data['files']))
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104
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105 def name(self, files):
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106 return sorted(files, key=lambda x: x['name'].lower())
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107
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108 def random(self, files):
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109 random.shuffle(files)
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110 return files
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111
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112
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113 class Order(object):
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114 """
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115 put the files in a particular order
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116 """
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117 def __init__(self, pattern):
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118 if '=' in pattern:
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119 key, value = pattern.split('=', 1)
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120 assert key == 'file'
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121 self.file = value
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122 else:
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123 self.order = [i.strip() for i in pattern.split(',')]
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124
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125 def __call__(self, request, data):
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126
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127 if self.file:
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128 raise NotImplementedError
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129
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130 files = []
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131 file_hash = dict([(i['name'], i) for i in data['files']])
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132 for f in self.order:
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133 files.append(file_hash.get(f, None))
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134 files = [ i for i in files if i is not None ]
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135
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136
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137 class FilenameDescription(FormatterBase):
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138 """
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139 obtain the description from the filename
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140 the file extension (if any) will be dropped and
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141 spaces will be substituted for underscores
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142 """
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143 # TODO : deal with CamelCaseFilenames
0
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144
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145 separators = ['_', '-'] # space substitute separators
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146 lesser_words = [ 'or', 'a', 'the', 'on', 'of' ] # unimportant words
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147
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148 def __call__(self, request, data):
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149 for f in data['files']:
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150 if f['description'] is None:
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151 description = f['name']
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152 if '.' in description:
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153 description = description.rsplit('.', 1)[0]
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154 decription = description.strip('_')
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155 for separator in self.separators:
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156 if separator in description:
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157 description = ' '.join([(i in self.lesser_words) and i or i.title()
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158 for i in description.split(separator)])
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159 description = description[0].upper() + description[1:]
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160 f['description'] = description
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161
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162
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163 class TitleDescription(FormatterBase):
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164 """
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165 splits a description into a title and a description via a separator in
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166 the description. The template will now have an additional variable,
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167 'title', per file
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168 Arguments:
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169 * separator: what separator to use (':' by default)
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170 """
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171 # XXX what about setting the page title?
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172
0
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173 defaults = { 'separator': ':' }
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174
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175 def __call__(self, request, data):
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176 for f in data['files']:
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177 if f['description'] and self.separator in f['description']:
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178 title, description = f['description'].split(self.separator, 1)
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179 title = title.strip()
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180 description = description.strip()
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181 if not title:
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182 title = f['name']
0
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183 f['title'] = title
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184 f['description'] = description
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185 else:
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186 f['title'] = f['description']
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187 f['description'] = None
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188
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189 class Links(FormatterBase):
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190 """
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191 allow list of links per item:
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192 foo.html = description of foo; [PDF]=foo.pdf; [TXT]=foo.txt
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193 """
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194
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195 defaults = { 'separator': ';' }
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196
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197 def __call__(self, request, data):
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198 for f in data['files']:
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199 if f['description'] and self.separator in f['description']:
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200 f['description'], links = f['description'].split(self.separator, 1)
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201 links = links.split(self.separator)
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202 assert min(['=' in link for link in links])
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203 links = [ link.split('=', 1) for link in links ]
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204 f['links'] = [{ 'text': text, 'link': link }
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205 for text, link in links]
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206
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207
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208 class Up(object):
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209 """
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210 provides an up link to the path above:
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211 /up = ..
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212 """
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213
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214 def __init__(self, arg):
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215 self.up = arg.strip()
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216
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217 def __call__(self, request, data):
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218 path = request.path_info
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219 if (path != '/') and self.up:
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diff changeset
220 data['files'].insert(0, {'path': '..',
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221 'type': 'directory',
35
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diff changeset
222 'name': path.rsplit('/', 1)[0] + '/',
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diff changeset
223 'description': self.up})
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diff changeset
224
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225 class CSS(object):
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226 """specify CSS used (whitespace separated list)"""
16
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227
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228 def __init__(self, arg):
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229 self.css = arg.split()
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230 def __call__(self, request, data):
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231 data['css'] = self.css
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diff changeset
232
33
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233 class JavaScript(object):
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234 """specify JS for the page"""
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235
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236 def __init__(self, arg):
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diff changeset
237 self.scripts = arg.split()
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238 def __call__(self, request, data):
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diff changeset
239 data['scripts'] = self.scripts
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240
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241 class Favicon(object):
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242 """specify favicons for the page"""
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243
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244 def __init__(self, icon):
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245 self.icon = icon
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246 def __call__(self, request, data):
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diff changeset
247 data['icon'] = self.icon
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diff changeset
248
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249 class Include(object):
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250 """include a file at the top of the body"""
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251
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252 def __init__(self, arg):
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253 self.include = arg
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254 def __call__(self, request, data):
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255 data['include'] = self.include
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diff changeset
256
0
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257
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diff changeset
258 def formatters():
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diff changeset
259 formatters = {}
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260 for entry_point in iter_entry_points('decoupage.formatters'):
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diff changeset
261 try:
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diff changeset
262 formatter = entry_point.load()
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diff changeset
263 except:
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diff changeset
264 continue
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diff changeset
265 formatters[entry_point.name] = formatter
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diff changeset
266 return formatters
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diff changeset
267
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diff changeset
268 def main(args=sys.argv[1:]):
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269 for name, formatter in formatters().items():
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diff changeset
270 print '%s%s' % (name, formatter.__doc__ and ': ' + formatter.__doc__ or '')
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diff changeset
271
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272 if __name__ == '__main__':
ec2d0d850b83 add ability to print formatters with decoupage-formatters console_script
k0s <k0scist@gmail.com>
parents: 1
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273 main()