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annotate piecrust/data/assetor.py @ 173:0a86a7a6b284

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routes: Actually match metadata when finding routes, fix problems with paths. When we look for a route that matches a given page, we now look at the source metadata that comes with that page, and compare it to the metadata we need to build URIs. Also, when matching URIs, we handle the case where a 'path'-component in our pattern may be completely empty, and thus we may be missing some trailing slashes in the URI.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 03 Jan 2015 21:10:44 -0800
parents 0445a2232de7
children 9f3fc17e71e1
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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 from piecrust.uriutil import multi_replace
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7 logger = logging.getLogger(__name__)
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10 class UnsupportedAssetsError(Exception):
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11 pass
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14 def build_base_url(app, uri, rel_assets_path):
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15 base_url_format = app.env.base_asset_url_format
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16 rel_assets_path = rel_assets_path.replace('\\', '/')
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62c7a97c8340 Get the un-paginated URL of a page early and pass that around.
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18 # Remove any extension since we'll be copying assets into the 1st
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19 # sub-page's folder.
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20 pretty = app.config.get('site/pretty_urls')
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21 if not pretty:
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22 uri, _ = os.path.splitext(uri)
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24 base_url = multi_replace(
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25 base_url_format,
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26 {
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27 '%path%': rel_assets_path,
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28 '%uri%': uri})
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29 return base_url.rstrip('/') + '/'
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32 class Assetor(object):
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33 ASSET_DIR_SUFFIX = '-assets'
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35 debug_render_doc = """Helps render URLs to files in the current page's
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36 asset folder."""
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37 debug_render = []
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38 debug_render_dynamic = ['_debugRenderAssetNames']
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39
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40 def __init__(self, page, uri):
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41 self._page = page
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42 self._uri = uri
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43 self._cache = None
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44
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45 def __getattr__(self, name):
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46 try:
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47 self._cacheAssets()
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48 return self._cache[name][0]
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49 except KeyError:
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50 raise AttributeError()
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51
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52 def __getitem__(self, key):
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53 self._cacheAssets()
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54 return self._cache[key][0]
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56 def __iter__(self):
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57 self._cacheAssets()
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58 return map(lambda i: i[0], self._cache.values())
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59
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60 def _debugRenderAssetNames(self):
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61 self._cacheAssets()
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62 return list(self._cache.keys())
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63
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64 def _cacheAssets(self):
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65 if self._cache is not None:
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66 return
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67
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68 self._cache = {}
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69 name, ext = os.path.splitext(self._page.path)
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70 assets_dir = name + Assetor.ASSET_DIR_SUFFIX
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71 if not os.path.isdir(assets_dir):
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72 return
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74 rel_assets_dir = os.path.relpath(assets_dir, self._page.app.root_dir)
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75 base_url = build_base_url(self._page.app, self._uri, rel_assets_dir)
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76 for fn in os.listdir(assets_dir):
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77 full_fn = os.path.join(assets_dir, fn)
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78 if not os.path.isfile(full_fn):
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79 raise Exception("Skipping: %s" % full_fn)
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80 continue
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82 name, ext = os.path.splitext(fn)
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83 if name in self._cache:
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84 raise UnsupportedAssetsError(
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85 "Multiple asset files are named '%s'." % name)
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86 self._cache[name] = (base_url + fn, full_fn)
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87
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88 cpi = self._page.app.env.exec_info_stack.current_page_info
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89 if cpi is not None:
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90 used_assets = list(map(lambda i: i[1], self._cache.values()))
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91 cpi.render_ctx.used_assets = used_assets
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92