Mercurial > piecrust2

annotate piecrust/commands/builtin/scaffolding.py @ 778:5e91bc0e3b4d

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internal: Move admin panel code into the piecrust package.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 16 Jul 2016 15:02:24 +0200
parents 2bb3c1a04e98
children 4850f8c21b6e
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1 import os
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2 import os.path
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3 import re
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4 import io
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5 import time
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6 import glob
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7 import logging
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8 import textwrap
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9 from piecrust import RESOURCES_DIR
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10 from piecrust.chefutil import print_help_item
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11 from piecrust.commands.base import ExtendableChefCommand, ChefCommandExtension
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12 from piecrust.sources.base import MODE_CREATING
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13 from piecrust.sources.interfaces import IPreparingSource
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14 from piecrust.uriutil import multi_replace
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15
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16
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17 logger = logging.getLogger(__name__)
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18
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19
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20 def make_title(slug):
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21 slug = re.sub(r'[\-_]', ' ', slug)
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22 return slug.title()
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24
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25 class PrepareCommand(ExtendableChefCommand):
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26 """ Chef command for creating pages with some default content.
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27 """
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28 def __init__(self):
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29 super(PrepareCommand, self).__init__()
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30 self.name = 'prepare'
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31 self.description = "Prepares new content for your website."
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32
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33 def setupParser(self, parser, app):
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34 # Don't setup anything if this is a null app
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35 # (for when `chef` is run from outside a website)
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36 if app.root_dir is None:
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37 return
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38
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39 subparsers = parser.add_subparsers()
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40 for src in app.sources:
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41 if not isinstance(src, IPreparingSource):
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42 logger.debug("Skipping source '%s' because it's not "
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43 "preparable." % src.name)
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44 continue
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45 if src.is_theme_source:
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46 logger.debug("Skipping source '%s' because it's a theme "
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47 "source." % src.name)
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48 continue
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49 p = subparsers.add_parser(
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50 src.item_name,
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51 help=("Creates an empty page in the '%s' source." %
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52 src.name))
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53 src.setupPrepareParser(p, app)
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54 p.add_argument('-t', '--template', default='default',
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55 help="The template to use, which will change the "
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56 "generated text and header. Run `chef help "
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57 "scaffolding` for more information.")
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58 p.set_defaults(source=src)
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59 p.set_defaults(sub_func=self._doRun)
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61 def checkedRun(self, ctx):
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62 if ctx.app.root_dir is None:
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63 raise SiteNotFoundError(theme=ctx.app.theme_site)
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64
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65 if not hasattr(ctx.args, 'sub_func'):
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66 ctx.parser.parse_args(['prepare', '--help'])
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67 return
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68 ctx.args.sub_func(ctx)
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69
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70 def _doRun(self, ctx):
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71 if not hasattr(ctx.args, 'source'):
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72 raise Exception("No source specified. "
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73 "Please run `chef prepare -h` for usage.")
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74
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75 app = ctx.app
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76 source = ctx.args.source
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77 metadata = source.buildMetadata(ctx.args)
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78 factory = source.findPageFactory(metadata, MODE_CREATING)
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79 path = factory.path
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80 name, ext = os.path.splitext(path)
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81 if ext == '.*':
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82 path = '%s.%s' % (
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83 name,
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84 app.config.get('site/default_auto_format'))
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85 if os.path.exists(path):
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86 raise Exception("'%s' already exists." % path)
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87
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88 tpl_name = ctx.args.template
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89 extensions = self.getExtensions(app)
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90 ext = next(
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91 filter(
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92 lambda e: tpl_name in e.getTemplateNames(ctx.app),
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93 extensions),
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94 None)
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95 if ext is None:
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96 raise Exception("No such page template: %s" % tpl_name)
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97
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98 tpl_text = ext.getTemplate(ctx.app, tpl_name)
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99 if tpl_text is None:
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100 raise Exception("Error loading template: %s" % tpl_name)
100
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101 title = (metadata.get('slug') or metadata.get('path') or
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102 'Untitled page')
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103 title = make_title(title)
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104 tokens = {
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105 '%title%': title,
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106 '%time.today%': time.strftime('%Y/%m/%d'),
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107 '%time.now%': time.strftime('%H:%M:%S')}
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108 tpl_text = multi_replace(tpl_text, tokens)
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109
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110 logger.info("Creating page: %s" % os.path.relpath(path, app.root_dir))
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111 if not os.path.exists(os.path.dirname(path)):
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112 os.makedirs(os.path.dirname(path), 0o755)
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113
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114 with open(path, 'w') as f:
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115 f.write(tpl_text)
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116
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117 editor = ctx.app.config.get('prepare/editor')
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118 editor_type = ctx.app.config.get('prepare/editor_type', 'exe')
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119 if editor:
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120 import shlex
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121 shell = False
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122 args = '%s "%s"' % (editor, path)
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123 if '%path%' in editor:
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124 args = editor.replace('%path%', path)
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125
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126 if editor_type.lower() == 'shell':
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127 shell = True
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128 else:
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129 args = shlex.split(args)
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130
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131 import subprocess
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132 logger.info("Running: %s" % args)
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133 subprocess.Popen(args, shell=shell)
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134
100
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135
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136 class DefaultPrepareTemplatesCommandExtension(ChefCommandExtension):
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137 """ Provides the default scaffolding templates to the `prepare`
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138 command.
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139 """
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140 def __init__(self):
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141 super(DefaultPrepareTemplatesCommandExtension, self).__init__()
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142 self.command_name = 'prepare'
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143
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144 def getTemplateNames(self, app):
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145 return ['default', 'rss', 'atom']
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146
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147 def getTemplateDescription(self, app, name):
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148 descs = {
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149 'default': "The default template, for a simple page.",
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150 'rss': "A fully functional RSS feed.",
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151 'atom': "A fully functional Atom feed."}
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152 return descs[name]
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153
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154 def getTemplate(self, app, name):
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155 assert name in ['default', 'rss', 'atom']
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156 src_path = os.path.join(RESOURCES_DIR, 'prepare', '%s.html' % name)
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157 with open(src_path, 'r', encoding='utf8') as fp:
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158 return fp.read()
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159
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160
187
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161 class UserDefinedPrepareTemplatesCommandExtension(ChefCommandExtension):
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162 """ Provides user-defined scaffolding templates to the `prepare`
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163 command.
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164 """
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165 def __init__(self):
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166 super(UserDefinedPrepareTemplatesCommandExtension, self).__init__()
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167 self.command_name = 'prepare'
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168
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169 def _getTemplatesDir(self, app):
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170 return os.path.join(app.root_dir, 'scaffold/pages')
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171
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172 def supports(self, app):
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173 if not app.root_dir:
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174 return False
187
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175 return os.path.isdir(self._getTemplatesDir(app))
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176
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177 def getTemplateNames(self, app):
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178 names = os.listdir(self._getTemplatesDir(app))
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179 return map(lambda n: os.path.splitext(n)[0], names)
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180
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181 def getTemplateDescription(self, app, name):
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182 return "User-defined template."
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183
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184 def getTemplate(self, app, name):
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185 templates_dir = self._getTemplatesDir(app)
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186 pattern = os.path.join(templates_dir, '%s.*' % name)
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187 matches = glob.glob(pattern)
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188 if not matches:
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189 raise Exception("No such page scaffolding template: %s" % name)
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190 if len(matches) > 1:
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191 raise Exception(
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192 "More than one scaffolding template has name: %s" % name)
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193 with open(matches[0], 'r', encoding='utf8') as fp:
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194 return fp.read()
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195
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196
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197 class DefaultPrepareTemplatesHelpTopic(ChefCommandExtension):
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198 """ Provides help topics for the `prepare` command.
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199 """
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200 command_name = 'help'
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201
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202 def getHelpTopics(self):
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203 return [('scaffolding',
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204 "Available templates for the 'prepare' command.")]
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205
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206 def getHelpTopic(self, topic, app):
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207 with io.StringIO() as tplh:
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208 extensions = app.plugin_loader.getCommandExtensions()
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209 for e in extensions:
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210 if e.command_name == 'prepare' and e.supports(app):
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211 for n in e.getTemplateNames(app):
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212 d = e.getTemplateDescription(app, n)
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213 print_help_item(tplh, n, d)
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214 help_list = tplh.getvalue()
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215
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216 help_txt = (
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217 textwrap.fill(
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218 "Running the 'prepare' command will let "
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219 "PieCrust setup a page for you in the correct place, with "
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220 "some hopefully useful default text.") +
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221 "\n\n" +
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222 textwrap.fill("The following templates are available:") +
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223 "\n\n" +
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224 help_list +
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225 "\n" +
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226 "You can add user-defined templates by creating pages in a "
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227 "`scaffold/pages` sub-directory in your website.")
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228 return help_txt
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229