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annotate fontaine/renderer.py @ 7:e3d52edde00b

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Make renderers write to a provided output stream.
author Ludovic Chabant <ludovic@chabant.com>
date Wed, 04 Jan 2017 01:21:55 -0800
parents 6019eee799bf
children 02d2e4d8b0c1
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1
74b83e3d921e Add more states, add more tests.
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1 import re
3
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2 from fontaine.document import (
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3 TYPE_ACTION, TYPE_CENTEREDACTION, TYPE_CHARACTER, TYPE_DIALOG,
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4 TYPE_PARENTHETICAL, TYPE_TRANSITION, TYPE_LYRICS, TYPE_PAGEBREAK)
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5
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6
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7 class BaseDocumentRenderer:
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8 def __init__(self, text_renderer=None):
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9 self.text_renderer = text_renderer
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10 if not text_renderer:
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11 self.text_renderer = NullTextRenderer()
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12
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13 self._para_rdrs = {
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14 TYPE_ACTION: self.write_action,
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15 TYPE_CENTEREDACTION: self.write_centeredaction,
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16 TYPE_CHARACTER: self.write_character,
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17 TYPE_DIALOG: self.write_dialog,
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18 TYPE_PARENTHETICAL: self.write_parenthetical,
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19 TYPE_TRANSITION: self.write_transition,
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20 TYPE_LYRICS: self.write_lyrics,
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21 TYPE_PAGEBREAK: self.write_pagebreak,
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22 }
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23
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24 def _tr(self, text):
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25 return self.text_renderer.render_text(text)
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26
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27 def render_doc(self, doc, out):
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28 self.write_header(doc, out)
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29 self.render_title_page(doc.title_values, out)
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30 for s in doc.scenes:
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31 self.render_scene(s, out)
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32 self.write_footer(doc, out)
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33
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34 def render_title_page(self, values, out):
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35 # Render known metadata.
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36 title = values.get('title')
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37 credit = values.get('credit')
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38 author = values.get('author') or values.get('authors')
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39 source = values.get('source')
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40 center_text = '\n\n'.join([
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41 i for i in [title, credit, author, source]
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42 if i is not None])
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43 self.write_title_heading(self._tr(center_text), out)
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44
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45 ddate = values.get('date') or values.get('draft date')
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46 contact = values.get('contact')
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47 bottom_text = '\n\n'.join([
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48 i for i in [ddate, contact]
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49 if i is not None])
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50 self.write_title_footer(self._tr(bottom_text), out)
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51
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52 def render_scene(self, scene, out):
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53 if scene.header is not None:
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54 self.write_scene_heading(scene.header, out)
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55 for p in scene.paragraphs:
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56 rdr_func = self._para_rdrs[p.type]
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57 if p.type != TYPE_PAGEBREAK:
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58 rdr_func(self._tr(p.text), out)
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59 else:
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60 rdr_func(out)
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61
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62 def write_header(self, doc, out):
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63 pass
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64
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65 def write_footer(self, doc, out):
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66 pass
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67
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68 def write_title_heading(self, text, out):
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69 raise NotImplementedError()
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70
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71 def write_title_footer(self, text, out):
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72 raise NotImplementedError()
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73
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74 def write_scene_heading(self, text, out):
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75 raise NotImplementedError()
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76
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77 def write_action(self, text, out):
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78 raise NotImplementedError()
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79
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80 def write_centeredaction(self, text, out):
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81 raise NotImplementedError()
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82
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83 def write_character(self, text, out):
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84 raise NotImplementedError()
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85
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86 def write_dialog(self, text, out):
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87 raise NotImplementedError()
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88
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89 def write_parenthetical(self, text, out):
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90 raise NotImplementedError()
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91
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92 def write_transition(self, text, out):
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93 raise NotImplementedError()
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94
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95 def write_lyrics(self, text, out):
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96 raise NotImplementedError()
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97
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98 def write_pagebreak(self, out):
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99 raise NotImplementedError()
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100
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101
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102 RE_ITALICS = re.compile(
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103 r"(?P<before>^|\s)(?P<esc>\\)?\*(?P<text>.*[^\s\*])\*(?=[^a-zA-Z0-9\*]|$)")
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104 RE_BOLD = re.compile(
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105 r"(?P<before>^|\s)(?P<esc>\\)?\*\*(?P<text>.*[^\s])\*\*(?=[^a-zA-Z0-9]|$)")
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106 RE_UNDERLINE = re.compile(
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107 r"(?P<before>^|\s)(?P<esc>\\)?_(?P<text>.*[^\s])_(?=[^a-zA-Z0-9]|$)")
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108
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109
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110 class BaseTextRenderer:
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111 def render_text(self, text):
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112 # Replace bold stuff to catch double asterisks.
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113 text = RE_BOLD.sub(self._do_make_bold, text)
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114 text = RE_ITALICS.sub(self._do_make_italics, text)
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115 text = RE_UNDERLINE.sub(self._do_make_underline, text)
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116
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117 return text
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118
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119 def _do_make_italics(self, m):
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120 if m.group('esc'):
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121 return m.group('before') + '*' + m.group('text') + '*'
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122 return (
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123 m.group('before') +
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124 self.make_italics(m.group('text')))
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125
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126 def _do_make_bold(self, m):
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127 if m.group('esc'):
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128 return m.group('before') + '**' + m.group('text') + '**'
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129 return (
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130 m.group('before') +
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131 self.make_bold(m.group('text')))
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132
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133 def _do_make_underline(self, m):
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134 if m.group('esc'):
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135 return m.group('before') + '_' + m.group('text') + '_'
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136 return (
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137 m.group('before') +
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138 self.make_underline(m.group('text')))
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139
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140 def make_italics(self, text):
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141 raise NotImplementedError()
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142
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143 def make_bold(self, text):
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144 raise NotImplementedError()
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145
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146 def make_underline(self, text):
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147 raise NotImplementedError()
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148
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149
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150 class NullTextRenderer(BaseTextRenderer):
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151 def make_bold(self, text):
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152 return text
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153
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154 def make_italics(self, text):
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155 return text
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156
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157 def make_underline(self, text):
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158 return text