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annotate piecrust/data/assetor.py @ 3:f485ba500df3

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Gigantic change to basically make PieCrust 2 vaguely functional. - Serving works, with debug window. - Baking works, multi-threading, with dependency handling. - Various things not implemented yet.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 10 Aug 2014 23:43:16 -0700
parents
children 474c9882decf
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3
f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
Ludovic Chabant <ludovic@chabant.com>
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1 import os.path
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2 import logging
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3 from piecrust.uriutil import multi_replace
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6 logger = logging.getLogger(__name__)
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9 def build_base_url(app, uri, assets_path):
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10 base_url_format = app.env.base_asset_url_format
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11 site_root = app.config.get('site/root')
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12 rel_path = os.path.relpath(assets_path, app.root_dir)
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13 pretty = app.config.get('site/pretty_urls')
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14 if not pretty:
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15 uri, _ = os.path.splitext(uri)
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16 base_url = multi_replace(
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17 base_url_format,
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18 {
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19 '%site_root%': site_root,
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20 '%path%': rel_path,
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21 '%uri%': uri})
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22 return base_url.rstrip('/') + '/'
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25 class Assetor(object):
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26 ASSET_DIR_SUFFIX = '-assets'
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28 debug_render_doc = """Helps render URLs to files in the current page's
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29 asset folder."""
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30 debug_render = []
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31 debug_render_dynamic = ['_debugRenderAssetNames']
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32
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33 def __init__(self, page, uri):
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34 self._page = page
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35 self._uri = uri
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36 self._cache = None
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37
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38 def __getattr__(self, name):
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39 try:
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40 self._cacheAssets()
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41 return self._cache[name]
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42 except KeyError:
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43 raise AttributeError()
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44
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45 def __getitem__(self, key):
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46 self._cacheAssets()
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47 return self._cache[key]
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48
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49 def __iter__(self):
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50 self._cacheAssets()
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51 return self._cache.__iter__()
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52
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53 def iterkeys(self):
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54 return self.__iter__(self)
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55
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56 def _debugRenderAssetNames(self):
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57 self._cacheAssets()
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58 return self._cache.keys()
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59
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60 def _cacheAssets(self):
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61 if self._cache is not None:
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62 return
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63
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64 self._cache = {}
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65 name, ext = os.path.splitext(self._page.path)
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66 assets_dir = name + Assetor.ASSET_DIR_SUFFIX
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67 if not os.path.isdir(assets_dir):
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68 return
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70 base_url = build_base_url(self._page.app, self._uri, assets_dir)
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71 for _, __, filenames in os.walk(assets_dir):
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72 for fn in filenames:
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73 name, ext = os.path.splitext(fn)
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74 self._cache[name] = base_url + fn
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75