Mercurial > piecrust2

annotate piecrust/processing/less.py @ 147:ab6e7e0e9d44

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Pass date information to routing when building URLs. This is so that URLs with dates in them can be built even when the date information is not coming from the source metadata, but from the page's config.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 29 Nov 2014 21:00:44 -0800
parents 0811f92cbdc7
children b4724e577a8c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
1 import os
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
2 import os.path
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
3 import json
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
4 import hashlib
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
5 import logging
17
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
6 import platform
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
7 import subprocess
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
8 from piecrust.processing.base import SimpleFileProcessor
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
9 from piecrust.processing.tree import FORCE_BUILD
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
10
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
11
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
12 logger = logging.getLogger(__name__)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
13
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
14
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
15 class LessProcessor(SimpleFileProcessor):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
16 PROCESSOR_NAME = 'less'
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
17
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
18 def __init__(self):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
19 super(LessProcessor, self).__init__({'less': 'css'})
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
20 self._conf = None
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
21 self._map_dir = None
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
22
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
23 def onPipelineStart(self, pipeline):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
24 self._map_dir = os.path.join(pipeline.tmp_dir, 'less')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
25 if not os.path.isdir(self._map_dir):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
26 os.makedirs(self._map_dir)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
27
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
28 def getDependencies(self, path):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
29 map_path = self._getMapPath(path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
30 try:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
31 with open(map_path, 'r') as f:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
32 dep_map = json.load(f)
119
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
33
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
34 # Check the version, since the `sources` list has changed
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
35 # meanings over time.
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
36 if dep_map.get('version') != 3:
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
37 logger.warning("Unknown LESS map version. Force rebuilding.")
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
38 return FORCE_BUILD
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
39
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
40 # Get the sources, but make all paths absolute.
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
41 sources = dep_map.get('sources')
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
42 path_dir = os.path.dirname(path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
43 def _makeAbs(p):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
44 return os.path.join(path_dir, p)
119
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
45 deps = list(map(_makeAbs, sources))
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
46 return [map_path] + deps
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
47 except IOError:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
48 # Map file not found... rebuild.
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
49 logger.debug("No map file found for LESS file '%s' at '%s'. "
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
50 "Rebuilding" % (path, map_path))
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
51 return FORCE_BUILD
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
52
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
53 def _doProcess(self, in_path, out_path):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
54 self._ensureInitialized()
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
55
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
56 map_path = self._getMapPath(in_path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
57 map_path = os.path.relpath(map_path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
58 args = [self._conf['bin'], '--source-map=%s' % map_path]
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
59 args += self._conf['options']
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
60 args.append(in_path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
61 args.append(out_path)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
62 logger.debug("Processing LESS file: %s" % args)
17
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
63
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
64 # On Windows, we need to run the process in a shell environment
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
65 # otherwise it looks like `PATH` isn't taken into account.
116
1c13f3389fcb Cosmetic fix.
Ludovic Chabant <ludovic@chabant.com>
parents: 17
diff changeset
66 shell = (platform.system() == 'Windows')
17
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
67 try:
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
68 retcode = subprocess.call(args, shell=shell)
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
69 except FileNotFoundError as ex:
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
70 logger.error("Tried running LESS processor with command: %s" %
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
71 args)
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
72 raise Exception("Error running LESS processor. "
de6a296744f7 The LESS compiler must be launched in a shell on Windows.
Ludovic Chabant <ludovic@chabant.com>
parents: 7
diff changeset
73 "Did you install it?") from ex
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
74 if retcode != 0:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
75 raise Exception("Error occured in LESS compiler. Please check "
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
76 "log messages above for more information.")
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
77 return True
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
78
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
79 def _ensureInitialized(self):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
80 if self._conf is not None:
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
81 return
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
82
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
83 self._conf = self.app.config.get('less') or {}
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
84 self._conf.setdefault('bin', 'lessc')
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
85 self._conf.setdefault('options',
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
86 ['--compress'])
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
87 if not isinstance(self._conf['options'], list):
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
88 raise Exception("The `less/options` configuration setting "
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
89 "must be an array of arguments.")
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
90
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
91 def _getMapPath(self, path):
119
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
92 map_name = "%s_%s.map" % (
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
93 os.path.basename(path),
0811f92cbdc7 Slightly more robust dependency handling for the LESS processor.
Ludovic Chabant <ludovic@chabant.com>
parents: 116
diff changeset
94 hashlib.md5(path.encode('utf8')).hexdigest())
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
95 map_path = os.path.join(self._map_dir, map_name)
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
96 return map_path
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
97