Mercurial > piecrust2
annotate piecrust/data/debug.py @ 3:f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
- Serving works, with debug window.
- Baking works, multi-threading, with dependency handling.
- Various things not implemented yet.
author | Ludovic Chabant <ludovic@chabant.com> |
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date | Sun, 10 Aug 2014 23:43:16 -0700 |
parents | |
children | 474c9882decf |
rev | line source |
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3
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
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1 import re |
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Gigantic change to basically make PieCrust 2 vaguely functional.
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2 import cgi |
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3 import logging |
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4 import StringIO |
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5 from piecrust import APP_VERSION, PIECRUST_URL |
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6 |
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7 |
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8 logger = logging.getLogger(__name__) |
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9 |
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10 |
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11 css_id_re = re.compile(r'[^\w\d\-]+') |
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12 |
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13 |
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14 # CSS for the debug window. |
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15 CSS_DEBUGINFO = """ |
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16 text-align: left; |
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17 font-style: normal; |
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18 padding: 1em; |
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19 background: #a42; |
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20 color: #fff; |
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21 position: fixed; |
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22 width: 50%; |
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23 bottom: 0; |
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24 right: 0; |
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25 overflow: auto; |
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26 max-height: 50%; |
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27 box-shadow: 0 0 10px #633; |
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28 """ |
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29 |
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30 # HTML elements. |
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31 CSS_P = 'margin: 0; padding: 0;' |
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32 CSS_A = 'color: #fff; text-decoration: none;' |
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33 |
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34 # Headers. |
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35 CSS_BIGHEADER = 'margin: 0.5em 0; font-weight: bold;' |
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36 CSS_HEADER = 'margin: 0.5em 0; font-weight: bold;' |
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37 |
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38 # Data block elements. |
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39 CSS_DATA = 'font-family: Courier, sans-serif; font-size: 0.9em;' |
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40 CSS_DATABLOCK = 'margin-left: 2em;' |
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41 CSS_VALUE = 'color: #fca;' |
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42 CSS_DOC = 'color: #fa8; font-size: 0.9em;' |
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43 |
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44 # 'Baked with PieCrust' text |
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45 BRANDING_TEXT = 'Baked with <em><a href="%s">PieCrust</a> %s</em>.' % ( |
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46 PIECRUST_URL, APP_VERSION) |
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47 |
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48 |
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49 def build_debug_info(page, data): |
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50 """ Generates HTML debug info for the given page's data. |
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51 """ |
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52 output = StringIO.StringIO() |
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53 try: |
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54 _do_build_debug_info(page, data, output) |
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55 return output.getvalue() |
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56 finally: |
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57 output.close() |
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58 |
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59 |
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60 def _do_build_debug_info(page, data, output): |
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61 app = page.app |
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62 exec_info = app.env.exec_info_stack.current_page_info |
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63 |
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64 print >>output, '<div id="piecrust-debug-info" style="%s">' % CSS_DEBUGINFO |
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65 |
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66 print >>output, '<div>' |
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67 print >>output, '<p style="%s"><strong>PieCrust %s</strong> — ' % (CSS_P, APP_VERSION) |
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68 |
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69 # If we have some execution info in the environment, |
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70 # add more information. |
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71 if exec_info: |
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72 if exec_info.was_cache_valid: |
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73 output.write('baked this morning') |
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74 else: |
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75 output.write('baked just now') |
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76 |
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77 if app.cache.enabled: |
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78 if app.env.was_cache_cleaned: |
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79 output.write(', from a brand new cache') |
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80 else: |
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81 output.write(', from a valid cache') |
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82 else: |
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83 output.write(', with no cache') |
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84 |
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85 else: |
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86 output.write('no caching information available') |
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87 |
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88 output.write(', ') |
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89 if app.env.start_time != 0: |
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90 output.write('in __PIECRUST_TIMING_INFORMATION__') |
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91 else: |
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92 output.write('no timing information available') |
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93 |
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94 print >>output, '</p>' |
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95 print >>output, '</div>' |
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96 |
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97 if data: |
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98 print >>output, '<div>' |
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99 print >>output, ('<p style="%s cursor: pointer;" onclick="var l = ' |
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100 'document.getElementById(\'piecrust-debug-details\'); ' |
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101 'if (l.style.display == \'none\') l.style.display = ' |
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102 '\'block\'; else l.style.display = \'none\';">' % CSS_P) |
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103 print >>output, ('<span style="%s">Template engine data</span> ' |
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104 '— click to toggle</a>.</p>' % CSS_BIGHEADER) |
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105 |
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106 print >>output, '<div id="piecrust-debug-details" style="display: none;">' |
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107 print >>output, ('<p style="%s">The following key/value pairs are ' |
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108 'available in the layout\'s markup, and most are ' |
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109 'available in the page\'s markup.</p>' % CSS_DOC) |
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110 |
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111 filtered_data = dict(data) |
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112 for k in filtered_data.keys(): |
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113 if k.startswith('__'): |
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114 del filtered_data[k] |
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115 |
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116 renderer = DebugDataRenderer(output) |
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117 renderer.external_docs['data-site'] = ( |
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118 "This section comes from the site configuration file.") |
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119 renderer.external_docs['data-page'] = ( |
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120 "This section comes from the page's configuration header.") |
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121 renderer.renderData(filtered_data) |
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122 |
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123 print >>output, '</div>' |
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124 print >>output, '</div>' |
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125 |
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126 print >>output, '</div>' |
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127 |
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128 |
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129 class DebugDataRenderer(object): |
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130 MAX_VALUE_LENGTH = 150 |
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131 |
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132 def __init__(self, output): |
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133 self.indent = 0 |
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134 self.output = output |
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135 self.external_docs = {} |
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136 |
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137 def renderData(self, data): |
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138 if not isinstance(data, dict): |
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139 raise Exception("Expected top level data to be a dict.") |
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140 self._writeLine('<div style="%s">' % CSS_DATA) |
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141 self._renderDict(data, 'data') |
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142 self._writeLine('</div>') |
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143 |
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144 def _renderValue(self, data, path): |
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145 if data is None: |
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146 self._write('<null>') |
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147 return |
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148 |
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149 if isinstance(data, dict): |
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150 self._renderCollapsableValueStart(path) |
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151 with IndentScope(self): |
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152 self._renderDict(data, path) |
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153 self._renderCollapsableValueEnd() |
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154 return |
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155 |
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156 if isinstance(data, list): |
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157 self._renderCollapsableValueStart(path) |
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158 with IndentScope(self): |
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159 self._renderList(data, path) |
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160 self._renderCollapsableValueEnd() |
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161 return |
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162 |
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163 data_type = type(data) |
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164 if data_type is bool: |
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165 self._write('<span style="%s">%s</span>' % (CSS_VALUE, |
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166 'true' if bool(data) else 'false')) |
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167 return |
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168 |
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169 if data_type is int: |
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170 self._write('<span style="%s">%d</span>' % (CSS_VALUE, data)) |
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171 return |
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172 |
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173 if data_type is float: |
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174 self._write('<span style="%s">%4.2f</span>' % (CSS_VALUE, data)) |
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175 return |
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176 |
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177 if data_type in (str, unicode): |
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178 if data_type == str: |
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179 data = data.decode('utf8') |
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180 if len(data) > DebugDataRenderer.MAX_VALUE_LENGTH: |
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181 data = data[:DebugDataRenderer.MAX_VALUE_LENGTH - 5] |
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182 data += '[...]' |
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183 data = cgi.escape(data).encode('ascii', 'xmlcharrefreplace') |
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184 self._write('<span style="%s">%s</span>' % (CSS_VALUE, data)) |
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185 return |
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186 |
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187 self._renderCollapsableValueStart(path) |
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188 with IndentScope(self): |
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189 self._renderObject(data, path) |
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190 self._renderCollapsableValueEnd() |
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191 |
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192 def _renderList(self, data, path): |
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193 self._writeLine('<div style="%s">' % CSS_DATABLOCK) |
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194 self._renderDoc(data, path) |
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195 self._renderAttributes(data, path) |
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196 rendered_count = self._renderIterable(data, path, lambda d: enumerate(d)) |
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197 if rendered_count == 0: |
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198 self._writeLine('<p style="%s %s">(empty array)</p>' % (CSS_P, CSS_DOC)) |
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199 self._writeLine('</div>') |
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200 |
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201 def _renderDict(self, data, path): |
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202 self._writeLine('<div style="%s">' % CSS_DATABLOCK) |
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203 self._renderDoc(data, path) |
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204 self._renderAttributes(data, path) |
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205 rendered_count = self._renderIterable(data, path, |
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206 lambda d: sorted(d.iteritems(), key=lambda i: i[0])) |
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207 if rendered_count == 0: |
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208 self._writeLine('<p style="%s %s">(empty dictionary)</p>' % (CSS_P, CSS_DOC)) |
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209 self._writeLine('</div>') |
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210 |
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211 def _renderObject(self, data, path): |
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212 if hasattr(data.__class__, 'debug_render_func'): |
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213 # This object wants to be rendered as a simple string... |
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214 render_func_name = data.__class__.debug_render_func |
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215 render_func = getattr(data, render_func_name) |
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216 value = render_func() |
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217 self._renderValue(value, path) |
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218 return |
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219 |
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220 self._writeLine('<div style="%s">' % CSS_DATABLOCK) |
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221 self._renderDoc(data, path) |
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222 rendered_attrs = self._renderAttributes(data, path) |
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223 |
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224 if (hasattr(data, '__iter__') and |
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225 hasattr(data.__class__, 'debug_render_items') and |
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226 data.__class__.debug_render_items): |
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227 rendered_count = self._renderIterable(data, path, |
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228 lambda d: enumerate(d)) |
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229 if rendered_count == 0: |
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230 self._writeLine('<p style="%s %s">(empty)</p>' % (CSS_P, CSS_DOC)) |
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231 |
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232 elif rendered_attrs == 0: |
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233 self._writeLine('<p style="%s %s">(empty)</p>' % (CSS_P, CSS_DOC)) |
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234 |
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235 self._writeLine('</div>') |
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236 |
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237 def _renderIterable(self, data, path, iter_func): |
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238 rendered_count = 0 |
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239 with IndentScope(self): |
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240 for i, item in iter_func(data): |
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241 self._writeStart('<div>%s' % i) |
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242 if item is not None: |
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243 self._write(' : ') |
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244 self._renderValue(item, self._makePath(path, i)) |
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245 self._writeEnd('</div>') |
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246 rendered_count += 1 |
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247 return rendered_count |
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248 |
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249 def _renderDoc(self, data, path): |
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250 if hasattr(data.__class__, 'debug_render_doc'): |
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251 self._writeLine('<span style="%s">– %s</span>' % |
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252 (CSS_DOC, data.__class__.debug_render_doc)) |
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253 |
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254 doc = self.external_docs.get(path) |
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255 if doc is not None: |
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256 self._writeLine('<span style="%s">– %s</span>' % |
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257 (CSS_DOC, doc)) |
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258 |
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259 def _renderAttributes(self, data, path): |
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260 if not hasattr(data.__class__, 'debug_render'): |
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261 return 0 |
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262 |
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263 attr_names = list(data.__class__.debug_render) |
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264 if hasattr(data.__class__, 'debug_render_dynamic'): |
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265 drd = data.__class__.debug_render_dynamic |
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266 for ng in drd: |
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267 name_gen = getattr(data, ng) |
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268 attr_names += name_gen() |
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269 |
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270 invoke_attrs = [] |
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271 if hasattr(data.__class__, 'debug_render_invoke'): |
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272 invoke_attrs = list(data.__class__.debug_render_invoke) |
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273 if hasattr(data.__class__, 'debug_render_invoke_dynamic'): |
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274 drid = data.__class__.debug_render_invoke_dynamic |
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275 for ng in drid: |
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276 name_gen = getattr(data, ng) |
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277 invoke_attrs += name_gen() |
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278 |
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279 rendered_count = 0 |
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280 for name in attr_names: |
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281 value = None |
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282 render_name = name |
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283 should_call = name in invoke_attrs |
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284 |
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285 try: |
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286 attr = getattr(data.__class__, name) |
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287 except AttributeError: |
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288 # This could be an attribute on the instance itself, or some |
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289 # dynamic attribute. |
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290 attr = getattr(data, name) |
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291 |
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292 if callable(attr): |
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293 attr_func = getattr(data, name) |
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294 argcount = attr_func.__code__.co_argcount |
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295 var_names = attr_func.__code__.co_varnames |
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296 if argcount == 1 and should_call: |
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297 render_name += '()' |
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298 value = attr_func() |
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299 else: |
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300 if should_call: |
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301 logger.warning("Method '%s' should be invoked for " |
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302 "rendering, but it has %s arguments." % |
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303 (name, argcount)) |
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304 should_call = False |
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305 render_name += '(%s)' % ','.join(var_names[1:]) |
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306 elif should_call: |
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307 value = getattr(data, name) |
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308 |
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309 self._writeLine('<div>%s' % render_name) |
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310 with IndentScope(self): |
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311 if should_call: |
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312 self._write(' : ') |
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313 self._renderValue(value, self._makePath(path, name)) |
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314 self._writeLine('</div>') |
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315 rendered_count += 1 |
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316 |
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317 return rendered_count |
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318 |
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319 def _renderCollapsableValueStart(self, path): |
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320 self._writeLine('<span style="cursor: pointer;" onclick="var l = ' |
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321 'document.getElementById(\'piecrust-debug-data-%s\'); ' |
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322 'if (l.style.display == \'none\') {' |
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323 ' l.style.display = \'block\';' |
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324 ' this.innerHTML = \'[-]\';' |
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325 '} else {' |
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326 ' l.style.display = \'none\';' |
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327 ' this.innerHTML = \'[+]\';' |
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328 '}">' |
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329 '[+]' |
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330 '</span>' % |
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331 path) |
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332 self._writeLine('<div style="display: none"' |
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333 'id="piecrust-debug-data-%s">' % path) |
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334 |
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335 def _renderCollapsableValueEnd(self): |
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336 self._writeLine('</div>') |
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337 |
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338 def _makePath(self, parent_path, key): |
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339 return '%s-%s' % (parent_path, css_id_re.sub('-', str(key))) |
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340 |
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341 def _writeLine(self, msg): |
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342 self.output.write(self.indent * ' ') |
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343 self.output.write(msg) |
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344 self.output.write('\n') |
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345 |
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346 def _writeStart(self, msg=None): |
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347 self.output.write(self.indent * ' ') |
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348 if msg is not None: |
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349 self.output.write(msg) |
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350 |
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Gigantic change to basically make PieCrust 2 vaguely functional.
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parents:
diff
changeset
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351 def _write(self, msg): |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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changeset
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352 self.output.write(msg) |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
353 |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
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354 def _writeEnd(self, msg=None): |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
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355 if msg is not None: |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
356 self.output.write(msg) |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
357 self.output.write('\n') |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
358 |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
359 |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
360 class IndentScope(object): |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
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361 def __init__(self, target): |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
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changeset
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362 self.target = target |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
363 |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
364 def __enter__(self): |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
365 self.target.indent += 1 |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
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366 return self |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
367 |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
368 def __exit__(self, exc_type, exc_val, exc_tb): |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
369 self.target.indent -= 1 |
f485ba500df3
Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff
changeset
|
370 |