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annotate piecrust/processing/compass.py @ 1172:aec9c6367c33

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cm: Remove generated Foodtruck assets from source control.
author Ludovic Chabant <ludovic@chabant.com>
date Fri, 04 Oct 2019 11:46:03 -0700
parents 12a1bd7af52e
children
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rev   line source
196
154b8df04829 processing: Add Compass and Sass processors.
Ludovic Chabant <ludovic@chabant.com>
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1 import os
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2 import os.path
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3 import logging
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4 import subprocess
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5 from piecrust.processing.base import Processor, PRIORITY_FIRST
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6 from piecrust.uriutil import multi_replace
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7
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8
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9 logger = logging.getLogger(__name__)
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10
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11
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12 class CompassProcessor(Processor):
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13 PROCESSOR_NAME = 'compass'
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14
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15 STATE_UNKNOWN = 0
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16 STATE_INACTIVE = 1
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17 STATE_ACTIVE = 2
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18
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19 def __init__(self):
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20 super(CompassProcessor, self).__init__()
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21 # Using a high priority is needed to get to the `.scss` files before
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22 # the Sass processor.
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23 self.priority = PRIORITY_FIRST
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24 self.is_bypassing_structured_processing = True
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25 self.is_delegating_dependency_check = False
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26 self._state = self.STATE_UNKNOWN
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27
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28 def initialize(self, app):
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29 super(CompassProcessor, self).initialize(app)
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30
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31 def onPipelineStart(self, ctx):
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32 super(CompassProcessor, self).onPipelineStart(ctx)
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33 self._maybeActivate(ctx)
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34
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35 def onPipelineEnd(self, ctx):
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36 super(CompassProcessor, self).onPipelineEnd(ctx)
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37 self._maybeRunCompass(ctx)
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38
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39 def matches(self, path):
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40 if self._state != self.STATE_ACTIVE:
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41 return False
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42
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43 _, ext = os.path.splitext(path)
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44 return ext == '.scss' or ext == '.sass'
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45
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46 def getDependencies(self, path):
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47 raise Exception("Compass processor should handle dependencies by "
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48 "itself.")
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49
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50 def getOutputFilenames(self, filename):
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51 raise Exception("Compass processor should handle outputs by itself.")
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52
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53 def process(self, path, out_dir):
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54 if path.startswith(self.app.theme_dir):
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55 if not self._runInTheme:
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56 logger.debug("Scheduling Compass execution in theme directory "
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57 "after the pipeline is done.")
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58 self._runInTheme = True
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59 else:
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60 if not self._runInSite:
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61 logger.debug("Scheduling Compass execution after the pipeline "
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62 "is done.")
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63 self._runInSite = True
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64
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65 def _maybeActivate(self, ctx):
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66 if self._state != self.STATE_UNKNOWN:
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67 return
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68
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69 config = self.app.config.get('compass')
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70 if config is None or not config.get('enable'):
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71 self._state = self.STATE_INACTIVE
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72 return
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73
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74 logger.debug("Activating Compass processing for SCSS/SASS files.")
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75 self._state = self.STATE_ACTIVE
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76
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77 bin_path = config.get('bin', 'compass')
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78
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79 config_path = config.get('config_path', 'config.rb')
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80 config_path = os.path.join(self.app.root_dir, config_path)
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81 if not os.path.exists(config_path):
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82 raise Exception("Can't find Compass configuration file: %s" %
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83 config_path)
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84 self._args = '%s compile --config "%s"' % (bin_path, config_path)
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85
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86 frameworks = config.get('frameworks', [])
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87 if not isinstance(frameworks, list):
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88 frameworks = frameworks.split(',')
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89 for f in frameworks:
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90 self._args += ' --load %s' % f
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91
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92 custom_args = config.get('options')
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93 if custom_args:
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94 self._args += ' ' + custom_args
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95
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96 out_dir = ctx.out_dir
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97 tmp_dir = os.path.join(ctx.tmp_dir, 'compass')
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98 self._args = multi_replace(
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99 self._args,
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100 {'%out_dir%': out_dir,
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101 '%tmp_dir%': tmp_dir})
196
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102
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103 self._runInSite = False
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104 self._runInTheme = False
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105
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106 def _maybeRunCompass(self, ctx):
196
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107 if self._state != self.STATE_ACTIVE:
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108 return
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109
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110 logger.debug("Running Compass with:")
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111 logger.debug(self._args)
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112
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113 prev_cwd = os.getcwd()
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114 os.chdir(self.app.root_dir)
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115 try:
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116 retcode = subprocess.call(self._args, shell=True)
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117 except FileNotFoundError as ex:
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118 logger.error("Tried running Compass with command: %s" %
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119 self._args)
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120 raise Exception("Error running Compass. "
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121 "Did you install it?") from ex
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122 finally:
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123 os.chdir(prev_cwd)
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124
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125 if retcode != 0:
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126 raise Exception("Error occured in Compass. Please check "
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127 "log messages above for more information.")
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128 return True
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129