Mercurial > piecrust2

annotate piecrust/data/debug.py @ 298:b7ab1b503510

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data: Fix incorrect next/previous page URLs in pagination data. Consolidate splitting an URL between its first URL and its sub page number. Be careful about the index page's URL not losing its slash.
author Ludovic Chabant <ludovic@chabant.com>
date Wed, 11 Mar 2015 23:46:42 -0700
parents d7a548ebcd58
children bd56d9acd6ef
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3
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1 import re
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395eb38f2dfb Properly escape HTML characters in the debug info, add more options.
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2 import io
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3 import html
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4 import logging
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5 import collections
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6 from piecrust import APP_VERSION, PIECRUST_URL
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7 from piecrust.page import FLAG_RAW_CACHE_VALID
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9
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10 logger = logging.getLogger(__name__)
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13 css_id_re = re.compile(r'[^\w\d\-]+')
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15
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16 # CSS for the debug window.
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17 CSS_DEBUGWINDOW = """
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18 text-align: left;
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19 font-family: serif;
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20 font-style: normal;
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21 font-weight: normal;
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22 position: fixed;
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23 width: 50%;
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24 bottom: 0;
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25 right: 0;
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26 overflow: auto;
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27 max-height: 50%;
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28 box-shadow: 0 0 10px #633;
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29 """
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30
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31 CSS_PIPELINESTATUS = """
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32 background: #fff;
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33 color: #a22;
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34 """
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35
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36 CSS_DEBUGINFO = """
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37 padding: 1em;
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38 background: #a42;
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39 color: #fff;
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40 """
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41
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42 # HTML elements.
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43 CSS_P = 'margin: 0; padding: 0;'
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44 CSS_A = 'color: #fff; text-decoration: none;'
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45
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46 # Headers.
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47 CSS_BIGHEADER = 'margin: 0.5em 0; font-weight: bold;'
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48 CSS_HEADER = 'margin: 0.5em 0; font-weight: bold;'
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49
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50 # Data block elements.
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51 CSS_DATA = 'font-family: Courier, sans-serif; font-size: 0.9em;'
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52 CSS_DATABLOCK = 'margin-left: 2em;'
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53 CSS_VALUE = 'color: #fca;'
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54 CSS_DOC = 'color: #fa8; font-size: 0.9em;'
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55
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56 # 'Baked with PieCrust' text
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57 BRANDING_TEXT = 'Baked with <em><a href="%s">PieCrust</a> %s</em>.' % (
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58 PIECRUST_URL, APP_VERSION)
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59
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60
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61 def build_debug_info(page, data):
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62 """ Generates HTML debug info for the given page's data.
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63 """
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64 output = io.StringIO()
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65 try:
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66 _do_build_debug_info(page, data, output)
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67 return output.getvalue()
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68 finally:
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69 output.close()
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70
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71
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72 def _do_build_debug_info(page, data, output):
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73 app = page.app
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74
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75 print('<div id="piecrust-debug-info" style="%s">' % CSS_DEBUGWINDOW,
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76 file=output)
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77
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78 print('<div id="piecrust-debug-info-pipeline-status" style="%s">' %
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79 CSS_PIPELINESTATUS, file=output)
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80 print('</div>', file=output)
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81
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82 print('<div style="%s">' % CSS_DEBUGINFO, file=output)
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83 print('<p style="%s"><strong>PieCrust %s</strong> &mdash; ' %
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84 (CSS_P, APP_VERSION), file=output)
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85
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86 # If we have some execution info in the environment,
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87 # add more information.
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88 if page.flags & FLAG_RAW_CACHE_VALID:
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89 output.write('baked this morning')
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90 else:
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91 output.write('baked just now')
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92
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93 if app.cache.enabled:
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94 if app.env.was_cache_cleaned:
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95 output.write(', from a brand new cache')
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96 else:
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97 output.write(', from a valid cache')
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98 else:
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99 output.write(', with no cache')
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100
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101 output.write(', ')
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102 if app.env.start_time != 0:
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103 output.write('in __PIECRUST_TIMING_INFORMATION__')
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104 else:
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105 output.write('no timing information available')
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106
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107 print('</p>', file=output)
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108 print('</div>', file=output)
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109
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110 if data:
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111 print('<div style="%s padding-top: 0;">' % CSS_DEBUGINFO, file=output)
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112 print(('<p style="%s cursor: pointer;" onclick="var l = '
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113 'document.getElementById(\'piecrust-debug-details\'); '
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114 'if (l.style.display == \'none\') l.style.display = '
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115 '\'block\'; else l.style.display = \'none\';">' % CSS_P), file=output)
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116 print(('<span style="%s">Template engine data</span> '
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117 '&mdash; click to toggle</a>.</p>' % CSS_BIGHEADER), file=output)
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118
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119 print('<div id="piecrust-debug-details" style="display: none;">', file=output)
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120 print(('<p style="%s">The following key/value pairs are '
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121 'available in the layout\'s markup, and most are '
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122 'available in the page\'s markup.</p>' % CSS_DOC), file=output)
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123
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124 filtered_data = dict(data)
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125 for k in list(filtered_data.keys()):
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126 if k.startswith('__'):
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127 del filtered_data[k]
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128
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129 renderer = DebugDataRenderer(output)
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130 renderer.external_docs['data-site'] = (
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131 "This section comes from the site configuration file.")
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132 renderer.external_docs['data-page'] = (
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133 "This section comes from the page's configuration header.")
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134 renderer.renderData(filtered_data)
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135
5
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136 print('</div>', file=output)
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137 print('</div>', file=output)
3
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138
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139 print('</div>', file=output)
3
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140
219
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141 print('<script src="/__piecrust_static/piecrust-debug-info.js"></script>',
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diff changeset
142 file=output)
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143
3
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144
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145 class DebugDataRenderer(object):
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146 MAX_VALUE_LENGTH = 150
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147
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148 def __init__(self, output):
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149 self.indent = 0
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150 self.output = output
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151 self.external_docs = {}
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152
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153 def renderData(self, data):
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154 if not isinstance(data, dict):
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155 raise Exception("Expected top level data to be a dict.")
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156 self._writeLine('<div style="%s">' % CSS_DATA)
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157 self._renderDict(data, 'data')
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158 self._writeLine('</div>')
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159
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160 def _renderValue(self, data, path):
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161 if data is None:
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162 self._write('&lt;null&gt;')
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163 return
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164
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165 if isinstance(data, dict):
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166 self._renderCollapsableValueStart(path)
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167 with IndentScope(self):
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168 self._renderDict(data, path)
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169 self._renderCollapsableValueEnd()
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170 return
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171
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172 if isinstance(data, list):
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173 self._renderCollapsableValueStart(path)
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174 with IndentScope(self):
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175 self._renderList(data, path)
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176 self._renderCollapsableValueEnd()
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177 return
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178
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179 data_type = type(data)
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180 if data_type is bool:
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181 self._write('<span style="%s">%s</span>' % (CSS_VALUE,
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182 'true' if bool(data) else 'false'))
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183 return
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184
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185 if data_type is int:
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186 self._write('<span style="%s">%d</span>' % (CSS_VALUE, data))
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187 return
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188
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189 if data_type is float:
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190 self._write('<span style="%s">%4.2f</span>' % (CSS_VALUE, data))
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191 return
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192
7
343d08ef5668 More PieCrust 3 fixes, and a couple of miscellaneous bug fixes.
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193 if data_type is str:
3
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194 if len(data) > DebugDataRenderer.MAX_VALUE_LENGTH:
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195 data = data[:DebugDataRenderer.MAX_VALUE_LENGTH - 5]
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196 data += '[...]'
14
395eb38f2dfb Properly escape HTML characters in the debug info, add more options.
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197 data = html.escape(data)
3
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198 self._write('<span style="%s">%s</span>' % (CSS_VALUE, data))
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199 return
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200
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201 self._renderCollapsableValueStart(path)
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202 with IndentScope(self):
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203 self._renderObject(data, path)
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204 self._renderCollapsableValueEnd()
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205
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206 def _renderList(self, data, path):
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207 self._writeLine('<div style="%s">' % CSS_DATABLOCK)
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208 self._renderDoc(data, path)
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209 self._renderAttributes(data, path)
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210 rendered_count = self._renderIterable(data, path, lambda d: enumerate(d))
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211 if rendered_count == 0:
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212 self._writeLine('<p style="%s %s">(empty array)</p>' % (CSS_P, CSS_DOC))
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213 self._writeLine('</div>')
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214
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215 def _renderDict(self, data, path):
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216 self._writeLine('<div style="%s">' % CSS_DATABLOCK)
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217 self._renderDoc(data, path)
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218 self._renderAttributes(data, path)
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219 rendered_count = self._renderIterable(data, path,
5
474c9882decf Upgrade to Python 3.
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diff changeset
220 lambda d: sorted(iter(d.items()), key=lambda i: i[0]))
3
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221 if rendered_count == 0:
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222 self._writeLine('<p style="%s %s">(empty dictionary)</p>' % (CSS_P, CSS_DOC))
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223 self._writeLine('</div>')
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224
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225 def _renderObject(self, data, path):
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226 if hasattr(data.__class__, 'debug_render_func'):
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227 # This object wants to be rendered as a simple string...
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228 render_func_name = data.__class__.debug_render_func
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229 render_func = getattr(data, render_func_name)
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230 value = render_func()
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231 self._renderValue(value, path)
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232 return
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233
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234 self._writeLine('<div style="%s">' % CSS_DATABLOCK)
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235 self._renderDoc(data, path)
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236 rendered_attrs = self._renderAttributes(data, path)
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237
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238 if (hasattr(data, '__iter__') and
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239 hasattr(data.__class__, 'debug_render_items') and
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240 data.__class__.debug_render_items):
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241 rendered_count = self._renderIterable(data, path,
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242 lambda d: enumerate(d))
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243 if rendered_count == 0:
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244 self._writeLine('<p style="%s %s">(empty)</p>' % (CSS_P, CSS_DOC))
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245
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246 elif rendered_attrs == 0:
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247 self._writeLine('<p style="%s %s">(empty)</p>' % (CSS_P, CSS_DOC))
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248
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249 self._writeLine('</div>')
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250
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251 def _renderIterable(self, data, path, iter_func):
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252 rendered_count = 0
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253 with IndentScope(self):
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254 for i, item in iter_func(data):
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255 self._writeStart('<div>%s' % i)
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256 if item is not None:
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diff changeset
257 self._write(' : ')
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258 self._renderValue(item, self._makePath(path, i))
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259 self._writeEnd('</div>')
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diff changeset
260 rendered_count += 1
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261 return rendered_count
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262
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263 def _renderDoc(self, data, path):
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264 if hasattr(data.__class__, 'debug_render_doc'):
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265 self._writeLine('<span style="%s">&ndash; %s</span>' %
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266 (CSS_DOC, data.__class__.debug_render_doc))
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diff changeset
267
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268 doc = self.external_docs.get(path)
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diff changeset
269 if doc is not None:
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270 self._writeLine('<span style="%s">&ndash; %s</span>' %
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271 (CSS_DOC, doc))
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272
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273 def _renderAttributes(self, data, path):
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274 if not hasattr(data.__class__, 'debug_render'):
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275 return 0
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276
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277 attr_names = list(data.__class__.debug_render)
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278 if hasattr(data.__class__, 'debug_render_dynamic'):
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279 drd = data.__class__.debug_render_dynamic
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280 for ng in drd:
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281 name_gen = getattr(data, ng)
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282 attr_names += name_gen()
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283
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284 invoke_attrs = []
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285 if hasattr(data.__class__, 'debug_render_invoke'):
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286 invoke_attrs = list(data.__class__.debug_render_invoke)
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287 if hasattr(data.__class__, 'debug_render_invoke_dynamic'):
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288 drid = data.__class__.debug_render_invoke_dynamic
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289 for ng in drid:
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290 name_gen = getattr(data, ng)
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291 invoke_attrs += name_gen()
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292
14
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293 redirects = {}
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294 if hasattr(data.__class__, 'debug_render_redirect'):
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295 redirects = data.__class__.debug_render_redirect
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296
3
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297 rendered_count = 0
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298 for name in attr_names:
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299 value = None
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300 render_name = name
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301 should_call = name in invoke_attrs
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302
14
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diff changeset
303 if name in redirects:
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diff changeset
304 name = redirects[name]
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diff changeset
305
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diff changeset
306 query_instance = False
3
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diff changeset
307 try:
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308 attr = getattr(data.__class__, name)
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309 except AttributeError:
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310 # This could be an attribute on the instance itself, or some
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311 # dynamic attribute.
14
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diff changeset
312 query_instance = True
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diff changeset
313
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diff changeset
314 if query_instance:
3
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315 attr = getattr(data, name)
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diff changeset
316
5
474c9882decf Upgrade to Python 3.
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diff changeset
317 if isinstance(attr, collections.Callable):
3
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318 attr_func = getattr(data, name)
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319 argcount = attr_func.__code__.co_argcount
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320 var_names = attr_func.__code__.co_varnames
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diff changeset
321 if argcount == 1 and should_call:
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322 render_name += '()'
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diff changeset
323 value = attr_func()
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diff changeset
324 else:
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diff changeset
325 if should_call:
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diff changeset
326 logger.warning("Method '%s' should be invoked for "
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
327 "rendering, but it has %s arguments." %
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diff changeset
328 (name, argcount))
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329 should_call = False
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330 render_name += '(%s)' % ','.join(var_names[1:])
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diff changeset
331 elif should_call:
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diff changeset
332 value = getattr(data, name)
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diff changeset
333
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diff changeset
334 self._writeLine('<div>%s' % render_name)
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diff changeset
335 with IndentScope(self):
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diff changeset
336 if should_call:
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diff changeset
337 self._write(' : ')
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338 self._renderValue(value, self._makePath(path, name))
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339 self._writeLine('</div>')
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340 rendered_count += 1
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341
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342 return rendered_count
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diff changeset
343
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344 def _renderCollapsableValueStart(self, path):
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345 self._writeLine('<span style="cursor: pointer;" onclick="var l = '
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diff changeset
346 'document.getElementById(\'piecrust-debug-data-%s\'); '
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diff changeset
347 'if (l.style.display == \'none\') {'
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diff changeset
348 ' l.style.display = \'block\';'
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diff changeset
349 ' this.innerHTML = \'[-]\';'
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diff changeset
350 '} else {'
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diff changeset
351 ' l.style.display = \'none\';'
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diff changeset
352 ' this.innerHTML = \'[+]\';'
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diff changeset
353 '}">'
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354 '[+]'
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diff changeset
355 '</span>' %
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diff changeset
356 path)
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diff changeset
357 self._writeLine('<div style="display: none"'
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diff changeset
358 'id="piecrust-debug-data-%s">' % path)
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diff changeset
359
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diff changeset
360 def _renderCollapsableValueEnd(self):
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361 self._writeLine('</div>')
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diff changeset
362
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diff changeset
363 def _makePath(self, parent_path, key):
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diff changeset
364 return '%s-%s' % (parent_path, css_id_re.sub('-', str(key)))
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parents:
diff changeset
365
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diff changeset
366 def _writeLine(self, msg):
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diff changeset
367 self.output.write(self.indent * ' ')
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diff changeset
368 self.output.write(msg)
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diff changeset
369 self.output.write('\n')
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diff changeset
370
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diff changeset
371 def _writeStart(self, msg=None):
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diff changeset
372 self.output.write(self.indent * ' ')
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diff changeset
373 if msg is not None:
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diff changeset
374 self.output.write(msg)
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375
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diff changeset
376 def _write(self, msg):
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diff changeset
377 self.output.write(msg)
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diff changeset
378
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diff changeset
379 def _writeEnd(self, msg=None):
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diff changeset
380 if msg is not None:
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diff changeset
381 self.output.write(msg)
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diff changeset
382 self.output.write('\n')
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parents:
diff changeset
383
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parents:
diff changeset
384
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
385 class IndentScope(object):
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diff changeset
386 def __init__(self, target):
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diff changeset
387 self.target = target
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parents:
diff changeset
388
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diff changeset
389 def __enter__(self):
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diff changeset
390 self.target.indent += 1
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diff changeset
391 return self
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parents:
diff changeset
392
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
393 def __exit__(self, exc_type, exc_val, exc_tb):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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diff changeset
394 self.target.indent -= 1
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parents:
diff changeset
395