Mercurial > hg > contenttransformer

comparison contenttransformer/transformers.py @ 12:59496de89997

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allow graphviz to serve svg
author Jeff Hammel <jhammel@mozilla.com>
date Wed, 30 Jun 2010 22:01:50 -0700
parents a9ddcfc7c4e8
children 946176949bba
comparison
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11:ba52425d1250 12:59496de89997
30 30
31 def transform(self, request): 31 def transform(self, request):
32 return (self.to_type, self.content) 32 return (self.to_type, self.content)
33 33
34 class Graphviz(Transformer): 34 class Graphviz(Transformer):
35 content_types = { 'png': 'image/png',
36 'svg': 'image/svg+xml' }
37
38 def __init__(self, content, content_type, format='png'):
39 self.format=format
40 Transformer.__init__(self, content, content_type)
41
35 def transform(self, request): 42 def transform(self, request):
36 """create a Graphviz object""" 43 """create a Graphviz object"""
37 process = subprocess.Popen(['dot', '-Tpng'], 44 _format = request.GET.get('format', self.format)
45 assert _format in self.content_types, 'Unknown format: ' + _format
46 process = subprocess.Popen(['dot', '-T' + _format],
38 stdin=subprocess.PIPE, 47 stdin=subprocess.PIPE,
39 stdout=subprocess.PIPE) 48 stdout=subprocess.PIPE)
40 image, _ = process.communicate(self.content) 49 image, _ = process.communicate(self.content)
41 return ('image/png', image) 50 return (self.content_types[_format], image)
42 51
43 class RestructuredText(Transformer): 52 class RestructuredText(Transformer):
44 settings = { 'report_level': 5 } 53 settings = { 'report_level': 5 }
45 54
46 def transform(self, request): 55 def transform(self, request):