Mercurial > piecrust2

annotate piecrust/pipelines/asset.py @ 1134:986ecdaa2a36

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url: New `url` command to get the URL of a page from its path.
author Ludovic Chabant <ludovic@chabant.com>
date Mon, 23 Apr 2018 21:37:27 -0700
parents 1a7f3ae09c53
children c8fb7b024faa
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1 import os
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2 import os.path
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3 import re
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4 import logging
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5 from piecrust.pipelines._procrecords import (
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6 AssetPipelineRecordEntry,
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7 add_asset_job_result, merge_job_result_into_record_entry)
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8 from piecrust.pipelines._proctree import (
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9 ProcessingTreeBuilder, ProcessingTreeRunner,
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10 get_node_name_tree, print_node,
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11 STATE_DIRTY)
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12 from piecrust.pipelines.base import ContentPipeline
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13 from piecrust.processing.base import ProcessorContext
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14 from piecrust.sources.fs import FSContentSourceBase
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15
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16
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17 logger = logging.getLogger(__name__)
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18
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19
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20 class AssetPipeline(ContentPipeline):
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21 PIPELINE_NAME = 'asset'
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22 RECORD_ENTRY_CLASS = AssetPipelineRecordEntry
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23
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24 def __init__(self, source, ppctx):
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25 if not isinstance(source, FSContentSourceBase):
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26 raise Exception(
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27 "The asset pipeline only support file-system sources.")
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28
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29 super().__init__(source, ppctx)
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30 self._ignore_patterns = []
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31 self._processors = None
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32 self._base_dir = source.fs_endpoint_path
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33
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34 def initialize(self):
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35 # Get the list of processors for this run.
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36 processors = self.app.plugin_loader.getProcessors()
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37 for flt in [
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38 self.app.config.get('pipelines/asset/processors'),
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39 self.source.config.get('processors')]:
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40 if flt is not None:
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41 logger.debug("Filtering processors to: %s" % flt)
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42 processors = get_filtered_processors(processors, flt)
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43
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44 # Invoke pre-processors.
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45 proc_ctx = ProcessorContext(self)
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46 for proc in processors:
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47 proc.onPipelineStart(proc_ctx)
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48
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49 # Add any extra processors registered in the `onPipelineStart` step.
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50 processors += proc_ctx.extra_processors
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51
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52 # Sort our processors by priority.
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53 processors.sort(key=lambda p: p.priority)
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54
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55 # Ok, that's the list of processors for this run.
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56 self._processors = processors
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57
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58 # Pre-processors can define additional ignore patterns so let's
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59 # add them to what we had already.
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60 ignores = self.app.config.get('pipelines/asset/ignore', [])
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61 ignores += proc_ctx.ignore_patterns
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62 self._ignore_patterns += make_re(ignores)
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63
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64 # Register timers.
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65 stats = self.app.env.stats
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66 stats.registerTimer('BuildProcessingTree', raise_if_registered=False)
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67 stats.registerTimer('RunProcessingTree', raise_if_registered=False)
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68
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69 def run(self, job, ctx, result):
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70 # Create the result stuff.
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71 item_spec = job['job_spec'][1]
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72 add_asset_job_result(result)
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73 result['item_spec'] = item_spec
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74
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75 # See if we need to ignore this item.
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76 rel_path = os.path.relpath(item_spec, self._base_dir)
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77 if re_matchany(rel_path, self._ignore_patterns):
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78 return
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79
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80 # Build the processing tree for this job.
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81 stats = self.app.env.stats
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82 with stats.timerScope('BuildProcessingTree'):
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83 builder = ProcessingTreeBuilder(self._processors)
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84 tree_root = builder.build(rel_path)
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85 result['flags'] |= AssetPipelineRecordEntry.FLAG_PREPARED
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86
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87 # Prepare and run the tree.
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88 out_dir = self.ctx.out_dir
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89 print_node(tree_root, recursive=True)
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90 leaves = tree_root.getLeaves()
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91 result['out_paths'] = [os.path.join(out_dir, l.path)
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92 for l in leaves]
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93 result['proc_tree'] = get_node_name_tree(tree_root)
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94 if tree_root.getProcessor().is_bypassing_structured_processing:
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95 result['flags'] |= (
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96 AssetPipelineRecordEntry.FLAG_BYPASSED_STRUCTURED_PROCESSING)
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97
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98 if self.ctx.force:
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99 tree_root.setState(STATE_DIRTY, True)
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100
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101 with stats.timerScope('RunProcessingTree'):
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102 runner = ProcessingTreeRunner(
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103 self._base_dir, self.tmp_dir, out_dir)
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104 if runner.processSubTree(tree_root):
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105 result['flags'] |= (
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106 AssetPipelineRecordEntry.FLAG_PROCESSED)
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107
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108 def handleJobResult(self, result, ctx):
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109 entry = self.createRecordEntry(result['item_spec'])
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110 merge_job_result_into_record_entry(entry, result)
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111 ctx.record.addEntry(entry)
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112
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113 def getDeletions(self, ctx):
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114 for prev, cur in ctx.record_history.diffs:
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115 if prev and not cur:
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116 for p in prev.out_paths:
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117 yield (p, 'previous asset was removed')
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118 elif prev and cur and cur.was_processed_successfully:
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119 diff = set(prev.out_paths) - set(cur.out_paths)
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120 for p in diff:
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121 yield (p, 'asset changed outputs')
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122
853
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123 def collapseRecords(self, ctx):
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124 for prev, cur in ctx.record_history.diffs:
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125 if prev and cur and not cur.was_processed:
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126 # This asset wasn't processed, so the information from
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127 # last time is still valid.
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128 cur.flags = (
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129 (prev.flags & ~AssetPipelineRecordEntry.FLAG_PROCESSED) |
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130 AssetPipelineRecordEntry.FLAG_COLLAPSED_FROM_LAST_RUN)
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131 cur.out_paths = list(prev.out_paths)
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132 cur.errors = list(prev.errors)
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133
854
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134 def shutdown(self):
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135 # Invoke post-processors.
854
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136 proc_ctx = ProcessorContext(self)
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137 for proc in self._processors:
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138 proc.onPipelineEnd(proc_ctx)
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139
852
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140
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141 split_processor_names_re = re.compile(r'[ ,]+')
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142
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143
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144 def get_filtered_processors(processors, authorized_names):
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145 if not authorized_names or authorized_names == 'all':
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146 return processors
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147
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148 if isinstance(authorized_names, str):
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149 authorized_names = split_processor_names_re.split(authorized_names)
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150
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151 procs = []
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152 has_star = 'all' in authorized_names
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153 for p in processors:
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154 for name in authorized_names:
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155 if name == p.PROCESSOR_NAME:
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156 procs.append(p)
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157 break
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158 if name == ('-%s' % p.PROCESSOR_NAME):
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159 break
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160 else:
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161 if has_star:
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162 procs.append(p)
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163 return procs
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164
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165
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166 def make_re(patterns):
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167 re_patterns = []
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168 for pat in patterns:
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169 if pat[0] == '/' and pat[-1] == '/' and len(pat) > 2:
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170 re_patterns.append(pat[1:-1])
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171 else:
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172 escaped_pat = (
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173 re.escape(pat)
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174 .replace(r'\*', r'[^/\\]*')
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175 .replace(r'\?', r'[^/\\]'))
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176 re_patterns.append(escaped_pat)
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177 return [re.compile(p) for p in re_patterns]
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178
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179
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180 def re_matchany(rel_path, patterns):
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181 # skip patterns use a forward slash regardless of the platform.
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182 rel_path = rel_path.replace('\\', '/')
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183 for pattern in patterns:
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184 if pattern.search(rel_path):
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185 return True
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186 return False
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187
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188
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189 re_ansicolors = re.compile('\033\\[\d+m')
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190
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191
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192 def _get_errors(ex, strip_colors=False):
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193 errors = []
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194 while ex is not None:
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195 msg = str(ex)
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196 if strip_colors:
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197 msg = re_ansicolors.sub('', msg)
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198 errors.append(msg)
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199 ex = ex.__cause__
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200 return errors
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parents:
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201