Mercurial > piecrust2

annotate piecrust/commands/builtin/themes.py @ 891:f13d618cfec6

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themes: Allow keeping local overrides when copying a theme locally.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 02 Jul 2017 22:19:58 -0700
parents 58ae026b4c31
children 727110ea112a
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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 import THEME_DIR, THEME_CONFIG_PATH, THEME_INFO_PATH
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5 from piecrust.commands.base import ChefCommand
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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 ThemesCommand(ChefCommand):
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12 def __init__(self):
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13 super(ThemesCommand, self).__init__()
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14 self.name = 'themes'
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15 self.description = "Manage the themes for the current website."
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16
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17 def setupParser(self, parser, app):
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18 subparsers = parser.add_subparsers()
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19 p = subparsers.add_parser(
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20 'info',
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21 help="Provides information about the current theme.")
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22 p.set_defaults(sub_func=self._info)
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23
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24 p = subparsers.add_parser(
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25 'override',
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26 help="Copies the current theme to the website for "
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27 "customization.")
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28 p.set_defaults(sub_func=self._overrideTheme)
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29
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30 p = subparsers.add_parser(
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31 'link',
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32 help="Makes a given theme the active one for the current "
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33 "website by creating a symbolic link to it from the "
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34 "'theme' directory.")
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35 p.add_argument(
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36 'theme_dir',
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37 help="The directory of the theme to link.")
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38 p.set_defaults(sub_func=self._linkTheme)
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39
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40 p = subparsers.add_parser(
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41 'unlink',
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42 help="Removes the currently active theme for the website. "
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43 "This removes the symbolic link to the theme, if any, or "
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44 "deletes the theme folder if it was copied locally.")
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45 p.set_defaults(sub_func=self._unlinkTheme)
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46
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47 def checkedRun(self, ctx):
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48 from piecrust.pathutil import SiteNotFoundError
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49
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50 if ctx.app.root_dir is None:
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51 raise SiteNotFoundError(theme=ctx.app.theme_site)
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52
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53 if not hasattr(ctx.args, 'sub_func'):
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54 ctx.parser.parse_args(['themes', '--help'])
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55 return
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56 ctx.args.sub_func(ctx)
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57
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58 def _info(self, ctx):
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59 import yaml
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60
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61 theme_dir = ctx.app.theme_dir
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62 if not os.path.exists(theme_dir):
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63 logger.info("Using default theme, from: %s" % ctx.app.theme_dir)
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64 elif theme_dir.startswith(ctx.app.root_dir):
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65 if os.path.islink(theme_dir):
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66 target = os.readlink(theme_dir)
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67 target = os.path.join(os.path.dirname(theme_dir), target)
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68 logger.info("Using local theme, from: %s" % target)
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69 else:
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70 logger.info("Using local theme.")
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71 else:
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72 logger.info("Using theme from: %s" % theme_dir)
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73
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74 info_path = os.path.join(theme_dir, THEME_CONFIG_PATH)
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75 if os.path.exists(info_path):
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76 info = None
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77 with open(info_path, 'r', encoding='utf8') as fp:
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78 theme_cfg = yaml.load(fp.read())
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79 if isinstance(theme_cfg, dict):
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80 info = theme_cfg.get('theme')
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81 if info:
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82 logger.info("Theme info:")
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83 for k, v in info.items():
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84 logger.info(" - %s: %s" % (str(k), str(v)))
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85
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86 def _overrideTheme(self, ctx):
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87 import shutil
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88
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89 theme_dir = ctx.app.theme_dir
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90 if not theme_dir:
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91 logger.error("There is no theme currently applied.")
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92 return 1
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93
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94 copies = []
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95 app_dir = ctx.app.root_dir
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96 for dirpath, dirnames, filenames in os.walk(theme_dir):
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97 rel_dirpath = os.path.relpath(dirpath, theme_dir)
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98 for name in filenames:
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99 if (dirpath == theme_dir and
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100 name in [THEME_CONFIG_PATH, THEME_INFO_PATH]):
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101 continue
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102 src_path = os.path.join(dirpath, name)
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103 dst_path = os.path.join(app_dir, rel_dirpath, name)
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104 copies.append((src_path, dst_path))
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105
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106 conflicts = set()
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107 for c in copies:
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108 if os.path.exists(c[1]):
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109 conflicts.add(c[1])
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110 if conflicts:
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111 logger.warning("Some website files override theme files:")
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112 for c in conflicts:
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113 logger.warning(os.path.relpath(c, app_dir))
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114 logger.warning("")
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115 logger.warning("The local website files will be preserved, and "
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116 "the conflicting theme files won't be copied "
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117 "locally.")
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118
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119 for c in copies:
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120 if not c[1] in conflicts:
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121 logger.info(os.path.relpath(c[1], app_dir))
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122 os.makedirs(os.path.dirname(c[1]), exist_ok=True)
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123 shutil.copy2(c[0], c[1])
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124
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125 def _linkTheme(self, ctx):
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126 if not os.path.isdir(ctx.args.theme_dir):
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127 logger.error("Invalid theme directory: %s" % ctx.args.theme_dir)
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128 return 1
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129
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130 msg = ("A theme already exists, and will be deleted. "
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131 "Are you sure? [Y/n]")
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132 self._doUnlinkTheme(ctx.app.root_dir, msg)
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133
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134 theme_dir = os.path.join(ctx.app.root_dir, THEME_DIR)
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135 try:
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136 os.symlink(ctx.args.theme_dir, theme_dir)
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137 except (NotImplementedError, OSError) as ex:
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138 if ctx.args.link_only:
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139 logger.error("Couldn't symlink the theme: %s" % ex)
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140 return 1
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141
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142 def _unlinkTheme(self, ctx):
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143 msg = ("The active theme is local. Are you sure you want "
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144 "to delete the theme directory? [Y/n]")
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145 self._doUnlinkTheme(ctx.app.root_dir, msg)
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146
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147 def _doUnlinkTheme(self, root_dir, delete_message):
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148 import shutil
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149
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150 theme_dir = os.path.join(root_dir, THEME_DIR)
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151
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152 if os.path.islink(theme_dir):
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153 logger.debug("Unlinking: %s" % theme_dir)
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154 os.unlink(theme_dir)
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155 return True
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156
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157 if os.path.isdir(theme_dir):
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158 logger.warning(delete_message)
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159 ans = input()
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160 if len(ans) > 0 and ans.lower() not in ['y', 'yes']:
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161 return 1
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162
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163 logger.debug("Deleting: %s" % theme_dir)
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164 shutil.rmtree(theme_dir)
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165
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166 return True
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167
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168 return False
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169