Mercurial > piecrust2

annotate piecrust/processing/util.py @ 661:2f780b191541

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author Ludovic Chabant <ludovic@chabant.com>
date Tue, 01 Mar 2016 22:26:09 -0800
parents cba781477bd0
children 46025a1b5434
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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206
cba781477bd0 processing: Add `concat`, `uglifyjs` and `cleancss` processors.
Ludovic Chabant <ludovic@chabant.com>
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1 import os.path
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2 import time
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3 import logging
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4 import yaml
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5 from piecrust.processing.base import Processor
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7
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8 logger = logging.getLogger(__name__)
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10
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11 class _ConcatInfo(object):
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12 timestamp = 0
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13 files = None
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14 delim = "\n"
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16
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17 class ConcatProcessor(Processor):
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18 PROCESSOR_NAME = 'concat'
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19
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20 def __init__(self):
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21 super(ConcatProcessor, self).__init__()
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22 self._cache = {}
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23
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24 def matches(self, path):
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25 return path.endswith('.concat')
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26
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27 def getDependencies(self, path):
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28 info = self._load(path)
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29 return info.files
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30
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31 def getOutputFilenames(self, filename):
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32 return [filename[:-7]]
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33
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34 def process(self, path, out_dir):
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35 dirname, filename = os.path.split(path)
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36 out_path = os.path.join(out_dir, filename[:-7])
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37 info = self._load(path)
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38 if not info.files:
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39 raise Exception("No files specified in: %s" %
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40 os.path.relpath(path, self.app.root_dir))
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41
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42 logger.debug("Concatenating %d files to: %s" %
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43 (len(info.files), out_path))
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44 encoded_delim = info.delim.encode('utf8')
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45 with open(out_path, 'wb') as ofp:
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46 for p in info.files:
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47 with open(p, 'rb') as ifp:
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48 ofp.write(ifp.read())
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49 if info.delim:
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50 ofp.write(encoded_delim)
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51 return True
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52
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53 def _load(self, path):
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54 cur_time = time.time()
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55 info = self._cache.get(path)
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56 if (info is not None and
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57 (cur_time - info.timestamp <= 1 or
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58 os.path.getmtime(path) < info.timestamp)):
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59 return info
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60
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61 if info is None:
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62 info = _ConcatInfo()
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63 self._cache[path] = info
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64
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65 with open(path, 'r') as fp:
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66 config = yaml.load(fp)
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67
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68 info.files = config.get('files', [])
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69 info.delim = config.get('delim', "\n")
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70 info.timestamp = cur_time
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71
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72 path_mode = config.get('path_mode', 'relative')
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73 if path_mode == 'relative':
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74 dirname, _ = os.path.split(path)
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75 info.files = [os.path.join(dirname, f) for f in info.files]
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76 elif path_mode == 'absolute':
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77 info.files = [os.path.join(self.app.root_dir, f)
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78 for f in info.files]
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79 else:
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80 raise Exception("Unknown path mode: %s" % path_mode)
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81
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82 return info
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83