Mercurial > piecrust2

annotate piecrust/processing/compressors.py @ 1131:32f71dbf5cb1

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Added tag 3.1.1 for changeset 71627dd7d2f1
author Ludovic Chabant <ludovic@chabant.com>
date Wed, 28 Feb 2018 20:44:23 -0800
parents a3dec0fbd9ce
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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cba781477bd0 processing: Add `concat`, `uglifyjs` and `cleancss` processors.
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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 platform
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5 import subprocess
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6 from piecrust.processing.base import Processor, SimpleFileProcessor
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8
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9 logger = logging.getLogger(__name__)
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12 class CleanCssProcessor(Processor):
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13 PROCESSOR_NAME = 'cleancss'
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14
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15 def __init__(self):
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16 super(CleanCssProcessor, self).__init__()
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17 self._conf = None
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18
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19 def matches(self, path):
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20 return path.endswith('.css') and not path.endswith('.min.css')
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21
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22 def getOutputFilenames(self, filename):
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23 self._ensureInitialized()
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24 basename, _ = os.path.splitext(filename)
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25 return ['%s%s' % (basename, self._conf['out_ext'])]
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27 def process(self, path, out_dir):
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28 self._ensureInitialized()
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29
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30 _, in_name = os.path.split(path)
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31 out_name = self.getOutputFilenames(in_name)[0]
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32 out_path = os.path.join(out_dir, out_name)
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34 args = [self._conf['bin'], '-o', out_path]
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35 args += self._conf['options']
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36 args.append(path)
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37 logger.debug("Cleaning CSS file: %s" % args)
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38
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39 try:
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40 retcode = subprocess.call(args)
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41 except FileNotFoundError as ex:
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42 logger.error("Tried running CleanCSS processor with command: %s" %
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43 args)
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44 raise Exception("Error running CleanCSS processor. "
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45 "Did you install it?") from ex
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46 if retcode != 0:
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47 raise Exception("Error occured in CleanCSS. Please check "
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48 "log messages above for more information.")
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49 return True
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50
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51 def _ensureInitialized(self):
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52 if self._conf is not None:
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53 return
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54
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55 bin_name = 'cleancss'
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56 if platform.system() == 'Windows':
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57 bin_name += '.cmd'
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58
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59 self._conf = self.app.config.get('cleancss') or {}
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60 self._conf.setdefault('bin', bin_name)
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61 self._conf.setdefault('options', ['--skip-rebase'])
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62 self._conf.setdefault('out_ext', '.css')
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63 if len(self._conf['out_ext']) > 0 and self._conf['out_ext'][0] != '.':
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64 self._conf['out_ext'] = '.' + self._conf['out_ext']
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65 if not isinstance(self._conf['options'], list):
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66 raise Exception("The `cleancss/options` configuration setting "
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67 "must be an array of arguments.")
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69
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70 class UglifyJSProcessor(SimpleFileProcessor):
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71 PROCESSOR_NAME = 'uglifyjs'
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72
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73 def __init__(self):
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74 super(UglifyJSProcessor, self).__init__({'js': 'js'})
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75 self._conf = None
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76
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77 def matches(self, path):
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78 return path.endswith('.js') and not path.endswith('.min.js')
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79
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80 def _doProcess(self, in_path, out_path):
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81 self._ensureInitialized()
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82
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83 args = [self._conf['bin'], in_path, '-o', out_path]
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84 args += self._conf['options']
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85 logger.debug("Uglifying JS file: %s" % args)
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86
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87 try:
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88 retcode = subprocess.call(args)
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89 except FileNotFoundError as ex:
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90 logger.error("Tried running UglifyJS processor with command: %s" %
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91 args)
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92 raise Exception("Error running UglifyJS processor. "
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93 "Did you install it?") from ex
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94 if retcode != 0:
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95 raise Exception("Error occured in UglifyJS. Please check "
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96 "log messages above for more information.")
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97 return True
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98
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99 def _ensureInitialized(self):
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100 if self._conf is not None:
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101 return
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102
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103 bin_name = 'uglifyjs'
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104 if platform.system() == 'Windows':
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105 bin_name += '.cmd'
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106
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107 self._conf = self.app.config.get('uglifyjs') or {}
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108 self._conf.setdefault('bin', bin_name)
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109 self._conf.setdefault('options', ['--compress'])
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110 if not isinstance(self._conf['options'], list):
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111 raise Exception("The `uglify/options` configuration setting "
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112 "must be an array of arguments.")