Mercurial > piecrust2

annotate piecrust/commands/builtin/scaffolding.py @ 886:dcdec4b951a1

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admin: Get the admin panel working again.
author Ludovic Chabant <ludovic@chabant.com>
date Tue, 20 Jun 2017 21:13:08 -0700
parents 58ae026b4c31
children c445a3d5d950
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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.commands.base import ExtendableChefCommand, ChefCommandExtension
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5
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6
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7 logger = logging.getLogger(__name__)
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8
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9
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10 class PrepareCommand(ExtendableChefCommand):
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11 """ Chef command for creating pages with some default content.
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12 """
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13 def __init__(self):
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14 super(PrepareCommand, self).__init__()
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15 self.name = 'prepare'
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16 self.description = "Prepares new content for your website."
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17
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18 def setupParser(self, parser, app):
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19 # Don't setup anything if this is a null app
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20 # (for when `chef` is run from outside a website)
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21 if app.root_dir is None:
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22 return
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23
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24 from piecrust.sources.interfaces import IPreparingSource
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25
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26 subparsers = parser.add_subparsers()
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27 for src in app.sources:
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28 if not isinstance(src, IPreparingSource):
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29 logger.debug("Skipping source '%s' because it's not "
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30 "preparable." % src.name)
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31 continue
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32 if src.is_theme_source:
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33 logger.debug("Skipping source '%s' because it's a theme "
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34 "source." % src.name)
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35 continue
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36 p = subparsers.add_parser(
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37 src.config['item_name'],
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38 help=("Creates an empty page in the '%s' source." %
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39 src.name))
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40 src.setupPrepareParser(p, app)
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41 p.add_argument('-t', '--template', default='default',
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42 help="The template to use, which will change the "
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43 "generated text and header. Run `chef help "
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44 "scaffolding` for more information.")
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45 p.add_argument('-f', '--force', action='store_true',
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46 help="Overwrite any existing content.")
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47 p.set_defaults(source=src)
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48 p.set_defaults(sub_func=self._doRun)
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49
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50 def checkedRun(self, ctx):
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51 from piecrust.pathutil import SiteNotFoundError
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52
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53 if ctx.app.root_dir is None:
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54 raise SiteNotFoundError(theme=ctx.app.theme_site)
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55
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56 if not hasattr(ctx.args, 'sub_func'):
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57 ctx.parser.parse_args(['prepare', '--help'])
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58 return
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59 ctx.args.sub_func(ctx)
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60
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61 def _doRun(self, ctx):
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62 import time
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63 from piecrust.uriutil import multi_replace
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64 from piecrust.sources.fs import FSContentSourceBase
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65
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66 if not hasattr(ctx.args, 'source'):
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67 raise Exception("No source specified. "
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68 "Please run `chef prepare -h` for usage.")
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70 app = ctx.app
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71 tpl_name = ctx.args.template
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72 extensions = self.getExtensions(app)
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73 ext = next(
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74 filter(
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75 lambda e: tpl_name in e.getTemplateNames(app),
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76 extensions),
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77 None)
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78 if ext is None:
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79 raise Exception("No such page template: %s" % tpl_name)
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80 tpl_text = ext.getTemplate(app, tpl_name)
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81 if tpl_text is None:
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82 raise Exception("Error loading template: %s" % tpl_name)
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83
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84 source = ctx.args.source
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85 content_item = source.createContent(ctx.args)
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86
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87 config_tokens = {
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88 '%title%': "Untitled Content",
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89 '%time.today%': time.strftime('%Y/%m/%d'),
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90 '%time.now%': time.strftime('%H:%M:%S')
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91 }
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92 config = content_item.metadata.get('config')
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93 if config:
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94 for k, v in config.items():
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95 config_tokens['%%%s%%' % k] = v
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96 tpl_text = multi_replace(tpl_text, config_tokens)
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97
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98 logger.info("Creating content: %s" % content_item.spec)
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99 mode = 'w' if ctx.args.force else 'x'
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100 with content_item.open(mode) as f:
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101 f.write(tpl_text)
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102
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103 # If this was a file-system content item, see if we need to auto-open
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104 # an editor on it.
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105 editor = ctx.app.config.get('prepare/editor')
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106 editor_type = ctx.app.config.get('prepare/editor_type', 'exe')
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107 if editor and isinstance(source, FSContentSourceBase):
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108 import shlex
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109 shell = False
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110 args = '%s "%s"' % (editor, content_item.spec)
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111 if '%path%' in editor:
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112 args = editor.replace('%path%', content_item.spec)
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113
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114 if editor_type.lower() == 'shell':
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115 shell = True
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116 else:
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117 args = shlex.split(args)
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118
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119 import subprocess
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120 logger.info("Running: %s" % args)
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121 subprocess.Popen(args, shell=shell)
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122
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123
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124 class DefaultPrepareTemplatesCommandExtension(ChefCommandExtension):
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125 """ Provides the default scaffolding templates to the `prepare`
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126 command.
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127 """
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128 def __init__(self):
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129 super(DefaultPrepareTemplatesCommandExtension, self).__init__()
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130 self.command_name = 'prepare'
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131
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132 def getTemplateNames(self, app):
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133 return ['default', 'rss', 'atom']
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134
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135 def getTemplateDescription(self, app, name):
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136 descs = {
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137 'default': "The default template, for a simple page.",
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138 'rss': "A fully functional RSS feed.",
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139 'atom': "A fully functional Atom feed."}
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140 return descs[name]
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141
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142 def getTemplate(self, app, name):
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143 from piecrust import RESOURCES_DIR
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144
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145 assert name in ['default', 'rss', 'atom']
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146 src_path = os.path.join(RESOURCES_DIR, 'prepare', '%s.html' % name)
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147 with open(src_path, 'r', encoding='utf8') as fp:
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148 return fp.read()
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149
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150
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151 class UserDefinedPrepareTemplatesCommandExtension(ChefCommandExtension):
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152 """ Provides user-defined scaffolding templates to the `prepare`
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153 command.
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154 """
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155 def __init__(self):
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156 super(UserDefinedPrepareTemplatesCommandExtension, self).__init__()
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157 self.command_name = 'prepare'
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158
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159 def _getTemplatesDir(self, app):
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160 return os.path.join(app.root_dir, 'scaffold/pages')
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161
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162 def supports(self, app):
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163 if not app.root_dir:
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164 return False
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165 return os.path.isdir(self._getTemplatesDir(app))
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166
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167 def getTemplateNames(self, app):
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168 names = os.listdir(self._getTemplatesDir(app))
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169 return map(lambda n: os.path.splitext(n)[0], names)
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170
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171 def getTemplateDescription(self, app, name):
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172 return "User-defined template."
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173
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174 def getTemplate(self, app, name):
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175 import glob
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176
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177 templates_dir = self._getTemplatesDir(app)
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178 pattern = os.path.join(templates_dir, '%s.*' % name)
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179 matches = glob.glob(pattern)
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180 if not matches:
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181 raise Exception("No such page scaffolding template: %s" % name)
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182 if len(matches) > 1:
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183 raise Exception(
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184 "More than one scaffolding template has name: %s" % name)
187
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185 with open(matches[0], 'r', encoding='utf8') as fp:
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186 return fp.read()
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187
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188
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189 class DefaultPrepareTemplatesHelpTopic(ChefCommandExtension):
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190 """ Provides help topics for the `prepare` command.
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191 """
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192 command_name = 'help'
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193
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194 def getHelpTopics(self):
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195 return [('scaffolding',
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196 "Available templates for the 'prepare' command.")]
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197
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198 def getHelpTopic(self, topic, app):
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199 import io
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200 import textwrap
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201 from piecrust.chefutil import print_help_item
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202
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203 with io.StringIO() as tplh:
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204 extensions = app.plugin_loader.getCommandExtensions()
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205 for e in extensions:
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206 if e.command_name == 'prepare' and e.supports(app):
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207 for n in e.getTemplateNames(app):
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208 d = e.getTemplateDescription(app, n)
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209 print_help_item(tplh, n, d)
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210 help_list = tplh.getvalue()
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211
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212 help_txt = (
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213 textwrap.fill(
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214 "Running the 'prepare' command will let "
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215 "PieCrust setup a page for you in the correct place, with "
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216 "some hopefully useful default text.") +
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217 "\n\n" +
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218 textwrap.fill("The following templates are available:") +
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219 "\n\n" +
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220 help_list +
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221 "\n" +
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222 "You can add user-defined templates by creating pages in a "
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223 "`scaffold/pages` sub-directory in your website.")
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224 return help_txt
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225