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annotate piecrust/data/assetor.py @ 1138:c8fb7b024faa

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bake: Disable `uglifyjs` and `cleancss` by default. There's a good chance a new user doesn't have them installed.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 20 May 2018 22:20:00 -0700
parents 29c51b981c17
children 0aeb6f18d6a0
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6
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1 import os
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2 import os.path
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3 import json
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4 import logging
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5 from piecrust.sources.base import REL_ASSETS
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6 from piecrust.uriutil import multi_replace
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9 logger = logging.getLogger(__name__)
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12 class UnsupportedAssetsError(Exception):
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13 pass
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15
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16 class _AssetInfo:
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17 def __init__(self, content_item, uri):
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18 self.content_item = content_item
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19 self.uri = uri
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20
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21 def __str__(self):
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22 return self.uri
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23
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24 def as_json(self):
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25 with open(self.content_item.spec, 'r', encoding='utf8') as fp:
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26 return json.load(fp)
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28
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29 class Assetor:
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30 debug_render_doc = """Helps render URLs to files in the current page's
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31 asset folder."""
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32 debug_render = []
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33 debug_render_dynamic = ['_debugRenderAssetNames']
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34
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35 def __init__(self, page):
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36 self._page = page
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37 self._cache_map = None
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38 self._cache_list = None
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40 def __getattr__(self, name):
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41 try:
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42 self._cacheAssets()
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43 return self._cache_map[name]
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44 except KeyError:
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45 raise AttributeError()
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46
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47 def __getitem__(self, name):
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48 self._cacheAssets()
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49 return self._cache_map[name]
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50
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51 def __contains__(self, name):
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52 self._cacheAssets()
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53 return name in self._cache_map
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54
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55 def __iter__(self):
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56 self._cacheAssets()
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57 return iter(self._cache_list)
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58
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59 def __len__(self):
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60 self._cacheAssets()
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61 return len(self._cache_map)
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62
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63 def _getAssetNames(self):
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64 self._cacheAssets()
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65 return self._cache_map.keys()
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66
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67 def _getAssetItems(self):
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68 self._cacheAssets()
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69 return map(lambda i: i.content_item, self._cache_map.values())
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70
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71 def _debugRenderAssetNames(self):
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72 self._cacheAssets()
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73 return list(self._cache_map.keys())
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74
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75 def _cacheAssets(self):
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76 if self._cache_map is not None:
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77 return
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78
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79 source = self._page.source
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80 content_item = self._page.content_item
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81 assets = source.getRelatedContents(content_item, REL_ASSETS)
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82
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83 self._cache_map = {}
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84 self._cache_list = []
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85
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86 if assets is None:
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87 return
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88
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89 app = source.app
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90 root_dir = app.root_dir
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91 asset_url_format = app.config.get('site/asset_url_format')
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92 if not asset_url_format:
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93 raise Exception("No asset URL format was specified.")
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94
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95 page_uri = self._page.getUri()
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96 pretty_urls = app.config.get('site/pretty_urls')
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97 if not pretty_urls:
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98 page_uri, _ = os.path.splitext(page_uri)
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99
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100 uri_build_tokens = {
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101 '%path%': None,
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102 '%filename%': None,
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103 '%page_uri%': page_uri
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104 }
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105
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106 for a in assets:
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107 name = a.metadata['name']
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108 if name in self._cache_map:
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109 raise UnsupportedAssetsError(
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110 "An asset with name '%s' already exists for item '%s'. "
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111 "Do you have multiple assets with colliding names?" %
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112 (name, content_item.spec))
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113
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114 # TODO: this assumes a file-system source!
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115 uri_build_tokens['%path%'] = \
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116 os.path.relpath(a.spec, root_dir).replace('\\', '/')
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117 uri_build_tokens['%filename%'] = a.metadata.get('filename')
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118 uri = multi_replace(asset_url_format, uri_build_tokens)
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119
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120 self._cache_map[name] = _AssetInfo(a, uri)
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121 self._cache_list.append(uri)
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122
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123 stack = app.env.render_ctx_stack
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124 cur_ctx = stack.current_ctx
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diff changeset
125 if cur_ctx is not None:
989
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 975
diff changeset
126 cur_ctx.render_info['used_assets'] = True
3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
127