Mercurial > piecrust2

annotate piecrust/commands/builtin/scaffolding.py @ 1152:74c0c7483986

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copyasset: Add `copyasset` command.
author Ludovic Chabant <ludovic@chabant.com>
date Sat, 19 Jan 2019 17:40:13 -0800
parents a85b2827ba1a
children aad9b5a0a809
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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 (
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5 ChefCommand, ExtendableChefCommand, ChefCommandExtension)
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6
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7
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8 logger = logging.getLogger(__name__)
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9
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10
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11 class PrepareCommand(ExtendableChefCommand):
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12 """ Chef command for creating pages with some default content.
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13 """
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14 def __init__(self):
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15 super(PrepareCommand, self).__init__()
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16 self.name = 'prepare'
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17 self.description = "Prepares new content for your website."
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18
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19 def setupParser(self, parser, app):
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20 # Don't setup anything if this is a null app
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21 # (for when `chef` is run from outside a website)
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22 if app.root_dir is None:
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23 return
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24
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25 from piecrust.sources.interfaces import IPreparingSource
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26
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27 subparsers = parser.add_subparsers()
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28 for src in app.sources:
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29 if not isinstance(src, IPreparingSource):
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30 logger.debug("Skipping source '%s' because it's not "
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31 "preparable." % src.name)
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32 continue
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33 if src.is_theme_source:
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34 logger.debug("Skipping source '%s' because it's a theme "
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35 "source." % src.name)
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36 continue
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37 p = subparsers.add_parser(
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38 src.config['item_name'],
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39 help=("Creates an empty page in the '%s' source." %
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40 src.name))
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41 src.setupPrepareParser(p, app)
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42 p.add_argument('-t', '--template', default='default',
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43 help="The template to use, which will change the "
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44 "generated text and header. Run `chef help "
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45 "scaffolding` for more information.")
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46 p.add_argument('-f', '--force', action='store_true',
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47 help="Overwrite any existing content.")
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48 p.set_defaults(source=src)
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49 p.set_defaults(sub_func=self._doRun)
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50
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51 def checkedRun(self, ctx):
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52 from piecrust.pathutil import SiteNotFoundError
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53
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54 if ctx.app.root_dir is None:
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55 raise SiteNotFoundError(theme=ctx.app.theme_site)
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56
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57 if not hasattr(ctx.args, 'sub_func'):
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58 ctx.parser.parse_args(['prepare', '--help'])
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59 return
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60 ctx.args.sub_func(ctx)
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61
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62 def _doRun(self, ctx):
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63 import time
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64 from piecrust.uriutil import multi_replace
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65 from piecrust.sources.fs import FSContentSourceBase
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66
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67 if not hasattr(ctx.args, 'source'):
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68 raise Exception("No source specified. "
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69 "Please run `chef prepare -h` for usage.")
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70
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71 app = ctx.app
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72 tpl_name = ctx.args.template
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73 extensions = self.getExtensions(app)
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74 ext = next(
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75 filter(
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76 lambda e: tpl_name in e.getTemplateNames(app),
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77 extensions),
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78 None)
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79 if ext is None:
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80 raise Exception("No such page template: %s" % tpl_name)
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81 tpl_text = ext.getTemplate(app, tpl_name)
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82 if tpl_text is None:
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83 raise Exception("Error loading template: %s" % tpl_name)
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84
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85 source = ctx.args.source
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86 content_item = source.createContent(vars(ctx.args))
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87 if content_item is None:
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88 raise Exception("Can't create item.")
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89
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90 config_tokens = {
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91 '%title%': "Untitled Content",
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92 '%time.today%': time.strftime('%Y/%m/%d'),
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93 '%time.now%': time.strftime('%H:%M:%S')
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94 }
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95 config = content_item.metadata.get('config')
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96 if config:
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97 for k, v in config.items():
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98 config_tokens['%%%s%%' % k] = v
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99 tpl_text = multi_replace(tpl_text, config_tokens)
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100
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101 logger.info("Creating content: %s" % content_item.spec)
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102 mode = 'w' if ctx.args.force else 'x'
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103 with source.openItem(content_item, mode) as f:
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104 f.write(tpl_text)
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105
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106 # If this was a file-system content item, see if we need to auto-open
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107 # an editor on it.
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108 editor = ctx.app.config.get('prepare/editor')
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109 editor_type = ctx.app.config.get('prepare/editor_type', 'exe')
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110 if editor and isinstance(source, FSContentSourceBase):
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111 import shlex
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112 shell = False
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113 args = '%s "%s"' % (editor, content_item.spec)
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114 if '%path%' in editor:
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115 args = editor.replace('%path%', content_item.spec)
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116
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117 if editor_type.lower() == 'shell':
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118 shell = True
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119 else:
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120 args = shlex.split(args)
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121
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122 import subprocess
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123 logger.info("Running: %s" % args)
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124 subprocess.Popen(args, shell=shell)
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125
100
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126
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127 class DefaultPrepareTemplatesCommandExtension(ChefCommandExtension):
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128 """ Provides the default scaffolding templates to the `prepare`
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129 command.
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130 """
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131 def __init__(self):
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132 super(DefaultPrepareTemplatesCommandExtension, self).__init__()
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133 self.command_name = 'prepare'
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134
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135 def getTemplateNames(self, app):
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136 return ['default', 'rss', 'atom']
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137
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138 def getTemplateDescription(self, app, name):
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139 descs = {
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140 'default': "The default template, for a simple page.",
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141 'rss': "A fully functional RSS feed.",
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142 'atom': "A fully functional Atom feed."}
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143 return descs[name]
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144
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145 def getTemplate(self, app, name):
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146 from piecrust import RESOURCES_DIR
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147
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148 assert name in ['default', 'rss', 'atom']
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149 src_path = os.path.join(RESOURCES_DIR, 'prepare', '%s.html' % name)
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150 with open(src_path, 'r', encoding='utf8') as fp:
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151 return fp.read()
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152
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153
187
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154 class UserDefinedPrepareTemplatesCommandExtension(ChefCommandExtension):
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155 """ Provides user-defined scaffolding templates to the `prepare`
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156 command.
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157 """
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158 def __init__(self):
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159 super(UserDefinedPrepareTemplatesCommandExtension, self).__init__()
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160 self.command_name = 'prepare'
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161
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162 def _getTemplatesDir(self, app):
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163 return os.path.join(app.root_dir, 'scaffold/pages')
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164
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165 def supports(self, app):
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166 if not app.root_dir:
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167 return False
187
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168 return os.path.isdir(self._getTemplatesDir(app))
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169
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170 def getTemplateNames(self, app):
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171 names = os.listdir(self._getTemplatesDir(app))
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172 return map(lambda n: os.path.splitext(n)[0], names)
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173
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174 def getTemplateDescription(self, app, name):
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175 return "User-defined template."
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176
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177 def getTemplate(self, app, name):
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178 import glob
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179
187
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180 templates_dir = self._getTemplatesDir(app)
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181 pattern = os.path.join(templates_dir, '%s.*' % name)
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182 matches = glob.glob(pattern)
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183 if not matches:
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184 raise Exception("No such page scaffolding template: %s" % name)
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185 if len(matches) > 1:
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186 raise Exception(
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187 "More than one scaffolding template has name: %s" % name)
187
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188 with open(matches[0], 'r', encoding='utf8') as fp:
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189 return fp.read()
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190
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191
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192 class DefaultPrepareTemplatesHelpTopic(ChefCommandExtension):
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193 """ Provides help topics for the `prepare` command.
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194 """
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195 command_name = 'help'
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196
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197 def getHelpTopics(self):
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198 return [('scaffolding',
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199 "Available templates for the 'prepare' command.")]
100
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200
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201 def getHelpTopic(self, topic, app):
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202 import io
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203 import textwrap
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204 from piecrust.chefutil import print_help_item
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205
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206 with io.StringIO() as tplh:
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207 extensions = app.plugin_loader.getCommandExtensions()
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208 for e in extensions:
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209 if e.command_name == 'prepare' and e.supports(app):
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210 for n in e.getTemplateNames(app):
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211 d = e.getTemplateDescription(app, n)
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212 print_help_item(tplh, n, d)
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213 help_list = tplh.getvalue()
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214
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215 help_txt = (
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216 textwrap.fill(
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217 "Running the 'prepare' command will let "
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218 "PieCrust setup a page for you in the correct place, with "
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219 "some hopefully useful default text.") +
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220 "\n\n" +
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221 textwrap.fill("The following templates are available:") +
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222 "\n\n" +
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223 help_list +
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224 "\n" +
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225 "You can add user-defined templates by creating pages in a "
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226 "`scaffold/pages` sub-directory in your website.")
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227 return help_txt
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228
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229
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230 class CopyAssetCommand(ChefCommand):
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231 """ Chef command for copying files into a page's assets folder.
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232 """
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233 def __init__(self):
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234 super().__init__()
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235 self.name = 'copyasset'
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236 self.description = "Copies files into a page's assets folder."
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237
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238 def setupParser(self, parser, app):
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239 parser.add_argument('path',
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240 help="The path to the asset file.")
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241 parser.add_argument('page',
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242 help="The path to the page file.")
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243 parser.add_argument('-n', '--rename',
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244 help=("Rename the file so that it will be known "
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245 "by this name in the `{{assets}}` syntax."))
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246
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247 def checkedRun(self, ctx):
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248 # TODO: suppor other types of sources...
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249 import shutil
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250 from piecrust.sources import mixins
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251
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252 item = None
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253 spec = ctx.args.page
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254 for src in ctx.app.sources:
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255 if not isinstance(src, mixins.SimpleAssetsSubDirMixin):
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256 logger.warning(
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257 "Ignoring source '%s' because it's not supported yet." %
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258 src.name)
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259 continue
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260
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261 try:
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262 item = src.findContentFromSpec(spec)
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263 break
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264 except Exception as ex:
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265 logger.warning(
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266 "Ignoring source '%s' because it raised an error: %s" %
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267 src.name, ex)
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268 continue
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269
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270 if item is None:
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271 raise Exception("No such page: %s" % ctx.args.page)
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272
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273 spec_no_ext, _ = os.path.splitext(item.spec)
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274 assets_dir = spec_no_ext + mixins.assets_suffix
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275 if not os.path.isdir(assets_dir):
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276 logger.info("Creating directory: %s" % assets_dir)
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277 os.makedirs(assets_dir)
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278
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279 dest_name, dest_ext = os.path.splitext(os.path.basename(ctx.args.path))
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280 dest_name = ctx.args.rename or dest_name
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281
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282 dest_path = os.path.join(assets_dir, dest_name + dest_ext)
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283 logger.info("Copying '%s' to '%s'." % (ctx.args.path, dest_path))
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diff changeset
284 shutil.copy2(ctx.args.path, dest_path)