Mercurial > piecrust2

annotate piecrust/processing/base.py @ 550:6f216c1ab6b1

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bake: Add a flag to know which record entries got collapsed from last run. This makes it possible to find entries for things that were actually baked during the current run, as opposed to skipped because they were "clean".
author Ludovic Chabant <ludovic@chabant.com>
date Tue, 04 Aug 2015 21:22:30 -0700
parents c4b3a7fd2f87
children 4850f8c21b6e
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3
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1 import shutil
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2 import os.path
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3 import logging
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4
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5
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6 logger = logging.getLogger(__name__)
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7
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8
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9 PRIORITY_FIRST = -1
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10 PRIORITY_NORMAL = 0
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11 PRIORITY_LAST = 1
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12
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13
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14 class PipelineContext(object):
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15 def __init__(self, worker_id, app, out_dir, tmp_dir, force=None):
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16 self.worker_id = worker_id
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17 self.app = app
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18 self.out_dir = out_dir
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19 self.tmp_dir = tmp_dir
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20 self.force = force
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21 self.record = None
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22 self._additional_ignore_patterns = []
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23
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24 @property
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25 def is_first_worker(self):
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26 return self.worker_id == 0
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27
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28 @property
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29 def is_pipeline_process(self):
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30 return self.worker_id < 0
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31
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32 def addIgnorePatterns(self, patterns):
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33 self._additional_ignore_patterns += patterns
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34
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35
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36 class Processor(object):
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37 PROCESSOR_NAME = None
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38
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39 def __init__(self):
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40 self.priority = PRIORITY_NORMAL
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41 self.is_bypassing_structured_processing = False
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42 self.is_delegating_dependency_check = True
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43
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44 def initialize(self, app):
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45 self.app = app
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46
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47 def onPipelineStart(self, ctx):
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48 pass
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50 def onPipelineEnd(self, ctx):
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51 pass
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53 def matches(self, path):
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54 return False
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55
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56 def getDependencies(self, path):
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57 return None
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58
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59 def getOutputFilenames(self, filename):
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60 return None
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61
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62 def process(self, path, out_dir):
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63 pass
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65
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66 class CopyFileProcessor(Processor):
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67 PROCESSOR_NAME = 'copy'
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68
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69 def __init__(self):
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70 super(CopyFileProcessor, self).__init__()
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71 self.priority = PRIORITY_LAST
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72
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73 def matches(self, path):
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74 return True
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75
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76 def getOutputFilenames(self, filename):
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77 return [filename]
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78
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79 def process(self, path, out_dir):
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80 out_path = os.path.join(out_dir, os.path.basename(path))
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81 logger.debug("Copying: %s -> %s" % (path, out_path))
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82 shutil.copyfile(path, out_path)
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83 return True
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84
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85
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86 class SimpleFileProcessor(Processor):
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87 def __init__(self, extensions=None):
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88 super(SimpleFileProcessor, self).__init__()
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89 self.extensions = extensions or {}
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90
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91 def matches(self, path):
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92 for ext in self.extensions:
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93 if path.endswith('.' + ext):
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94 return True
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95 return False
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96
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97 def getOutputFilenames(self, filename):
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98 basename, ext = os.path.splitext(filename)
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99 ext = ext.lstrip('.')
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100 out_ext = self.extensions[ext]
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101 return ['%s.%s' % (basename, out_ext)]
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102
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103 def process(self, path, out_dir):
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104 _, in_name = os.path.split(path)
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105 out_name = self.getOutputFilenames(in_name)[0]
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106 out_path = os.path.join(out_dir, out_name)
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107 return self._doProcess(path, out_path)
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108
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109 def _doProcess(self, in_path, out_path):
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110 raise NotImplementedError()
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111
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113 class ExternalProcessException(Exception):
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114 def __init__(self, stderr_data):
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115 self.stderr_data = stderr_data
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116
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117 def __str__(self):
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118 return self.stderr_data
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119
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