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annotate piecrust/importing/wordpress.py @ 535:03c3a77fda60 2.0.0b2

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prepare: More help about scaffolding.
author Ludovic Chabant <ludovic@chabant.com>
date Wed, 29 Jul 2015 09:13:54 -0700
parents dd25bd3ce1f9
children 4850f8c21b6e
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1 import os.path
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2 import logging
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3 import datetime
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4 import yaml
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5 from collections import OrderedDict
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6 from piecrust import CONFIG_PATH
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7 from piecrust.configuration import (
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8 ConfigurationLoader, ConfigurationDumper, merge_dicts)
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9 from piecrust.importing.base import Importer, create_page, download_asset
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10 from piecrust.sources.base import MODE_CREATING
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11
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12
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13 logger = logging.getLogger(__name__)
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14
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15
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16 class WordpressImporterBase(Importer):
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17 def setupParser(self, parser, app):
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18 parser.add_argument(
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19 '--pages-source',
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20 default="pages",
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21 help="The source to store pages in.")
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22 parser.add_argument(
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23 '--posts-source',
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24 default="posts",
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25 help="The source to store posts in.")
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26 parser.add_argument(
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27 '--default-post-layout',
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28 help="The default layout to use for posts.")
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29 parser.add_argument(
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30 '--default-post-category',
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31 help="The default category to use for posts.")
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32 parser.add_argument(
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33 '--default-page-layout',
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34 help="The default layout to use for pages.")
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35 parser.add_argument(
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36 '--default-page-category',
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37 help="The default category to use for pages.")
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38
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39 def importWebsite(self, app, args):
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40 impl = self._getImplementation(app, args)
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41 return impl.importWebsite()
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42
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43 def _getImplementation(self, app, args):
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44 raise NotImplementedError()
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47 class _ImporterBase(object):
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48 def __init__(self, app, args):
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49 self.app = app
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50 self._cat_map = {}
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51 self._author_map = {}
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52 self._pages_source = app.getSource(args.pages_source)
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53 self._posts_source = app.getSource(args.posts_source)
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54
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55 def importWebsite(self):
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56 ctx = self._open()
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57
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58 # Site configuration.
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59 logger.info("Generating site configuration...")
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60 site_config = self._getSiteConfig(ctx)
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61 site_config.setdefault('site', {})
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62 site_config['site'].update({
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63 'post_url': '%year%/%month%/%slug%',
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64 'category_url': 'category/%category%'})
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65
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66 site_config_path = os.path.join(self.app.root_dir, CONFIG_PATH)
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67 with open(site_config_path, 'r') as fp:
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68 cfg_data = yaml.load(fp, Loader=ConfigurationLoader)
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69
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70 cfg_data = cfg_data or {}
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71 merge_dicts(cfg_data, site_config)
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72
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73 with open(site_config_path, 'w') as fp:
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74 yaml.dump(cfg_data, fp, default_flow_style=False,
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75 allow_unicode=True,
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76 Dumper=ConfigurationDumper)
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77
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78 # Content
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79 for p in self._getPosts(ctx):
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80 if p['type'] == 'attachment':
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81 self._createAsset(p)
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82 else:
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83 self._createPost(p)
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84
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85 self._close(ctx)
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86
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87 def _open(self):
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88 raise NotImplementedError()
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89
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90 def _close(self, ctx):
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91 pass
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92
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93 def _getSiteConfig(self, ctx):
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94 raise NotImplementedError()
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95
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96 def _getPosts(self, ctx):
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97 raise NotImplementedError()
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98
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99 def _createAsset(self, asset_info):
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100 download_asset(self.app, asset_info['url'])
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101
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102 def _createPost(self, post_info):
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103 post_dt = post_info['datetime']
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104 finder = {
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105 'year': post_dt.year,
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106 'month': post_dt.month,
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107 'day': post_dt.day,
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108 'slug': post_info['slug']}
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109 if post_info['type'] == 'post':
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110 source = self._posts_source
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111 elif post_info['type'] == 'page':
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112 source = self._pages_source
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113 else:
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114 raise Exception("Unknown post type: %s" % post_info['type'])
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115 factory = source.findPageFactory(finder, MODE_CREATING)
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116
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117 metadata = post_info['metadata'].copy()
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118 for name in ['title', 'author', 'status', 'post_id', 'post_guid',
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119 'description', 'categories']:
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120 val = post_info.get(name)
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121 if val is not None:
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122 metadata[name] = val
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123
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124 content = post_info['content']
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125 excerpt = post_info['excerpt']
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126 text = content
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127 if excerpt is not None and excerpt.strip() != '':
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128 text = "%s\n\n---excerpt---\n\n%s" % (content, excerpt)
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129
314
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130 status = metadata.get('status')
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131 if status == 'publish':
363
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132 path = factory.path
314
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133 create_page(self.app, path, metadata, text)
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134 elif status == 'draft':
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135 filename = '-'.join(metadata['title'].split(' ')) + '.html'
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136 path = os.path.join(self.app.root_dir, 'drafts', filename)
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137 create_page(self.app, path, metadata, text)
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138 else:
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139 logger.warning("Ignoring post with status: %s" % status)
302
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140
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141
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142 class _XmlImporter(_ImporterBase):
300
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143 ns_wp = {'wp': 'http://wordpress.org/export/1.2/'}
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144 ns_dc = {'dc': "http://purl.org/dc/elements/1.1/"}
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145 ns_excerpt = {'excerpt': "http://wordpress.org/export/1.2/excerpt/"}
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146 ns_content = {'content': "http://purl.org/rss/1.0/modules/content/"}
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147
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148 def __init__(self, app, args):
302
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149 super(_XmlImporter, self).__init__(app, args)
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150 self.path = args.xml_path
300
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151
302
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152 def _open(self):
300
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153 if not os.path.exists(self.path):
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154 raise Exception("No such file: %s" % self.path)
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155
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156 try:
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157 import xml.etree.ElementTree as ET
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158 except ImportError:
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159 logger.error("You don't seem to have any support for ElementTree "
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160 "XML parsing.")
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161 return 1
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162
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163 with open(self.path, 'r', encoding='utf8') as fp:
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164 xml = fp.read()
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165 xml = xml.replace(chr(0x1e), '')
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166 xml = xml.replace(chr(0x10), '')
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167 tree = ET.fromstring(xml)
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168 channel = tree.find('channel')
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169
302
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170 return channel
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171
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172 def _getSiteConfig(self, channel):
300
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173 # Get basic site information
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174 title = find_text(channel, 'title')
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175 description = find_text(channel, 'description')
302
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176 site_config = OrderedDict({
300
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177 'site': {
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178 'title': title,
302
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179 'description': description}
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180 })
300
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181
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182 # Get authors' names.
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183 authors = {}
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184 for a in channel.findall('wp:author', self.ns_wp):
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185 login = find_text(a, 'wp:author_login', self.ns_wp)
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186 authors[login] = {
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187 'email': find_text(a, 'wp:author_email', self.ns_wp),
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188 'display_name': find_text(a, 'wp:author_display_name',
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189 self.ns_wp),
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190 'first_name': find_text(a, 'wp:author_first_name',
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191 self.ns_wp),
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192 'last_name': find_text(a, 'wp:author_last_name',
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193 self.ns_wp),
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194 'author_id': find_text(a, 'wp:author_id',
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195 self.ns_wp)}
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196 site_config['site']['authors'] = authors
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197
302
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198 return site_config
300
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199
302
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200 def _getPosts(self, channel):
300
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201 for i in channel.findall('item'):
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202 post_type = find_text(i, 'wp:post_type', self.ns_wp)
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203 if post_type == 'attachment':
302
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204 yield self._getAssetInfo(i)
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205 else:
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206 yield self._getPostInfo(i)
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207
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208 def _getAssetInfo(self, node):
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209 url = find_text(node, 'wp:attachment_url', self.ns_wp)
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210 return {'type': 'attachment', 'url': url}
300
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211
302
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212 def _getPostInfo(self, node):
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213 post_date_str = find_text(node, 'wp:post_date', self.ns_wp)
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214 post_date = datetime.datetime.strptime(post_date_str,
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215 '%Y-%m-%d %H:%M:%S')
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216 post_name = find_text(node, 'wp:post_name', self.ns_wp)
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217 post_type = find_text(node, 'wp:post_type', self.ns_wp)
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218 post_info = {
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219 'type': post_type,
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220 'slug': post_name,
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221 'datetime': post_date}
300
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222
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223 title = find_text(node, 'title')
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224 creator = find_text(node, 'dc:creator', self.ns_dc)
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225 status = find_text(node, 'wp:status', self.ns_wp)
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226 post_id = find_text(node, 'wp:post_id', self.ns_wp)
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227 guid = find_text(node, 'guid')
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228 description = find_text(node, 'description')
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229 # TODO: menu order, parent, password, sticky
302
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diff changeset
230 post_info.update({
300
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231 'title': title,
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232 'author': creator,
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233 'status': status,
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234 'post_id': post_id,
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235 'post_guid': guid,
302
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236 'description': description})
300
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237
302
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238 categories = []
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239 for c in node.findall('category'):
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240 nicename = str(c.attrib.get('nicename'))
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241 categories.append(nicename)
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242 post_info['categories'] = categories
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243
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244 metadata = {}
300
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245 for m in node.findall('wp:postmeta', self.ns_wp):
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246 key = find_text(m, 'wp:meta_key', self.ns_wp)
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247 metadata[key] = find_text(m, 'wp:meta_value', self.ns_wp)
302
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248 post_info['metadata'] = metadata
300
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249
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250 content = find_text(node, 'content:encoded', self.ns_content)
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251 excerpt = find_text(node, 'excerpt:encoded', self.ns_excerpt)
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252 post_info.update({
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253 'content': content,
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254 'excerpt': excerpt})
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255
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256 return post_info
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257
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258
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259 class WordpressXmlImporter(WordpressImporterBase):
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260 name = 'wordpress-xml'
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261 description = "Imports a Wordpress blog from an exported XML archive."
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262
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263 def setupParser(self, parser, app):
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264 super(WordpressXmlImporter, self).setupParser(parser, app)
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265 parser.add_argument(
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266 'xml_path',
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267 help="The path to the exported XML archive file.")
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268
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269 def _getImplementation(self, app, args):
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270 return _XmlImporter(app, args)
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271
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272
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273 def find_text(parent, child_name, namespaces=None):
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274 return str(parent.find(child_name, namespaces).text)
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275