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annotate piecrust/processing/requirejs.py @ 1155:fac4483867a5

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author Ludovic Chabant <ludovic@chabant.com>
date Tue, 11 Jun 2019 15:11:39 -0700
parents 4850f8c21b6e
children
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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, PRIORITY_FIRST, FORCE_BUILD
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9 logger = logging.getLogger(__name__)
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12 class RequireJSProcessor(Processor):
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13 PROCESSOR_NAME = 'requirejs'
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14
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15 def __init__(self):
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16 super(RequireJSProcessor, self).__init__()
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17 self.is_bypassing_structured_processing = True
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18 self._conf = None
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20 def initialize(self, app):
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21 super(RequireJSProcessor, self).initialize(app)
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22
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23 self._conf = app.config.get('requirejs')
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24 if self._conf is None:
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25 return
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27 if 'build_path' not in self._conf:
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28 raise Exception("You need to specify `requirejs/build_path` "
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29 "for RequireJS.")
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30 self._conf.setdefault('bin', 'r.js')
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31 self._conf.setdefault('out_path', self._conf['build_path'])
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32
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33 def onPipelineStart(self, ctx):
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34 super(RequireJSProcessor, self).onPipelineStart(ctx)
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36 if self._conf is None:
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37 return
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38
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39 logger.debug("Adding Javascript suppressor to build pipeline.")
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40 skip = _JavascriptSkipProcessor(self._conf['build_path'])
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41 ctx.extra_processors.append(skip)
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42
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43 def matches(self, path):
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44 if self._conf is None:
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45 return False
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46 return path == self._conf['build_path']
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47
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48 def getDependencies(self, path):
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49 return FORCE_BUILD
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50
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51 def process(self, path, out_dir):
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52 args = [self._conf['bin'], '-o', path]
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53 shell = (platform.system() == 'Windows')
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54 cwd = self.app.root_dir
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55 logger.debug("Running RequireJS: %s" % ' '.join(args))
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56 try:
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57 retcode = subprocess.call(args, shell=shell, cwd=cwd)
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58 except FileNotFoundError as ex:
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59 logger.error("Tried running RequireJS processor "
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60 "with command: %s" % args)
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61 raise Exception("Error running RequireJS. "
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62 "Did you install it?") from ex
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63 if retcode != 0:
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64 raise Exception("Error occured in RequireJS compiler. "
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65 "Please check log messages above for "
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66 "more information.")
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67 return True
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70 class _JavascriptSkipProcessor(Processor):
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71 PROCESSOR_NAME = 'requirejs_javascript_skip'
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72
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73 def __init__(self, except_path=None):
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74 super(_JavascriptSkipProcessor, self).__init__()
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75 self.priority = PRIORITY_FIRST
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76 self.is_bypassing_structured_processing = True
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77 self._except_path = except_path
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79 def matches(self, path):
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80 _, ext = os.path.splitext(path)
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81 return ext == '.js' and path != self._except_path
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82
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83 def process(self, in_path, out_path):
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84 return False
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85