Mercurial > libervia-backend
annotate sat/tools/common/template.py @ 3713:f97be63871e4 v0.8.0
v0.8.0 release
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Tue, 30 Nov 2021 23:31:07 +0100 |
| parents | be6d91572633 |
| children | dd1d1a582438 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
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3 # SAT: an XMPP client |
| 3479 | 4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) |
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5 |
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6 # This program is free software: you can redistribute it and/or modify |
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7 # it under the terms of the GNU Affero General Public License as published by |
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8 # the Free Software Foundation, either version 3 of the License, or |
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9 # (at your option) any later version. |
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10 |
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11 # This program is distributed in the hope that it will be useful, |
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 # GNU Affero General Public License for more details. |
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15 |
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16 # You should have received a copy of the GNU Affero General Public License |
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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18 |
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19 """Template generation""" |
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20 |
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21 import os.path |
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22 import time |
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23 import re |
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24 import json |
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25 from pathlib import Path |
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26 from collections import namedtuple |
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27 from typing import Optional, List, Tuple |
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28 from xml.sax.saxutils import quoteattr |
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29 from babel import support |
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30 from babel import Locale |
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31 from babel.core import UnknownLocaleError |
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32 import pygments |
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33 from pygments import lexers |
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34 from pygments import formatters |
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35 from sat.core.constants import Const as C |
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36 from sat.core.i18n import _ |
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37 from sat.core import exceptions |
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38 from sat.tools import config |
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39 from sat.tools.common import date_utils |
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40 from sat.core.log import getLogger |
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41 |
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42 log = getLogger(__name__) |
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43 |
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44 try: |
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45 import sat_templates |
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46 except ImportError: |
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47 raise exceptions.MissingModule( |
| 3028 | 48 "sat_templates module is not available, please install it or check your path to " |
| 49 "use template engine" | |
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50 ) |
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51 else: |
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52 sat_templates # to avoid pyflakes warning |
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53 |
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54 try: |
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55 import jinja2 |
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56 except: |
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57 raise exceptions.MissingModule( |
| 3028 | 58 "Missing module jinja2, please install it from http://jinja.pocoo.org or with " |
| 59 "pip install jinja2" | |
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60 ) |
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61 |
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62 from lxml import etree |
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63 from jinja2 import Markup as safe |
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64 from jinja2 import is_undefined |
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65 from jinja2 import utils |
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66 from jinja2 import TemplateNotFound |
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67 from jinja2 import contextfilter |
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68 from jinja2.loaders import split_template_path |
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69 |
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70 HTML_EXT = ("html", "xhtml") |
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71 RE_ATTR_ESCAPE = re.compile(r"[^a-z_-]") |
| 3028 | 72 SITE_RESERVED_NAMES = ("sat",) |
| 73 TPL_RESERVED_CHARS = r"()/." | |
| 74 RE_TPL_RESERVED_CHARS = re.compile("[" + TPL_RESERVED_CHARS + "]") | |
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75 BROWSER_DIR = "_browser" |
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76 BROWSER_META_FILE = "browser_meta.json" |
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77 |
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78 TemplateData = namedtuple("TemplateData", ['site', 'theme', 'path']) |
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79 |
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80 |
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81 class TemplateLoader(jinja2.BaseLoader): |
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82 """A template loader which handle site, theme and absolute paths""" |
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83 # TODO: list_templates should be implemented |
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84 |
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85 def __init__(self, sites_paths, sites_themes, trusted=False): |
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86 """ |
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87 @param trusted(bool): if True, absolue template paths will be allowed |
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88 be careful when using this option and sure that you can trust the template, |
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89 as this allow the template to open any file on the system that the |
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90 launching user can access. |
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91 """ |
| 3028 | 92 if not sites_paths or not "" in sites_paths: |
| 93 raise exceptions.InternalError("Invalid sites_paths") | |
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94 super(jinja2.BaseLoader, self).__init__() |
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95 self.sites_paths = sites_paths |
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96 self.sites_themes = sites_themes |
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97 self.trusted = trusted |
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98 |
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99 @staticmethod |
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100 def parse_template(template): |
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101 """Parse template path and return site, theme and path |
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102 |
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103 @param template_path(unicode): path to template with parenthesis syntax |
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104 The site and/or theme can be specified in parenthesis just before the path |
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105 e.g.: (some_theme)path/to/template.html |
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106 (/some_theme)path/to/template.html (equivalent to previous one) |
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107 (other_site/other_theme)path/to/template.html |
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108 (other_site/)path/to/template.html (defaut theme for other_site) |
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109 /absolute/path/to/template.html (in trusted environment only) |
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110 @return (TemplateData): |
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111 site, theme and template_path. |
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112 if site is empty, SàT Templates are used |
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113 site and theme can be both None if absolute path is used |
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114 Relative path is the path from theme root dir e.g. blog/articles.html |
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115 """ |
| 3028 | 116 if template.startswith("("): |
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117 # site and/or theme are specified |
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118 try: |
| 3028 | 119 theme_end = template.index(")") |
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120 except IndexError: |
| 3028 | 121 raise ValueError("incorrect site/theme in template") |
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122 theme_data = template[1:theme_end] |
| 3028 | 123 theme_splitted = theme_data.split('/') |
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124 if len(theme_splitted) == 1: |
| 3028 | 125 site, theme = "", theme_splitted[0] |
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126 elif len(theme_splitted) == 2: |
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127 site, theme = theme_splitted |
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128 else: |
| 3028 | 129 raise ValueError("incorrect site/theme in template") |
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130 template_path = template[theme_end+1:] |
| 3028 | 131 if not template_path or template_path.startswith("/"): |
| 132 raise ValueError("incorrect template path") | |
| 133 elif template.startswith("/"): | |
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134 # this is an absolute path, so we have no site and no theme |
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135 site = None |
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136 theme = None |
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137 template_path = template |
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138 else: |
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139 # a default template |
| 3028 | 140 site = "" |
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141 theme = C.TEMPLATE_THEME_DEFAULT |
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142 template_path = template |
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143 |
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144 if site is not None: |
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145 site = site.strip() |
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146 if not site: |
| 3028 | 147 site = "" |
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148 elif site in SITE_RESERVED_NAMES: |
| 3028 | 149 raise ValueError(_("{site} can't be used as site name, " |
| 150 "it's reserved.").format(site=site)) | |
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151 |
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152 if theme is not None: |
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153 theme = theme.strip() |
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154 if not theme: |
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155 theme = C.TEMPLATE_THEME_DEFAULT |
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156 if RE_TPL_RESERVED_CHARS.search(theme): |
| 3028 | 157 raise ValueError(_("{theme} contain forbidden char. Following chars " |
| 158 "are forbidden: {reserved}").format( | |
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159 theme=theme, reserved=TPL_RESERVED_CHARS)) |
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160 |
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161 return TemplateData(site, theme, template_path) |
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162 |
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163 @staticmethod |
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164 def getSitesAndThemes( |
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165 site: str, |
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166 theme: str, |
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167 settings: Optional[dict] = None, |
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168 ) -> List[Tuple[str, str]]: |
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169 """Get sites and themes to check for template/file |
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170 |
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171 Will add default theme and default site in search list when suitable. Settings' |
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172 `fallback` can be used to modify behaviour: themes in this list will then be used |
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173 instead of default (it can also be empty list or None, in which case no fallback |
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174 is used). |
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175 |
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176 @param site: site requested |
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177 @param theme: theme requested |
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178 @return: site and theme couples to check |
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179 """ |
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180 if settings is None: |
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181 settings = {} |
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182 sites_and_themes = [[site, theme]] |
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183 fallback = settings.get("fallback", [C.TEMPLATE_THEME_DEFAULT]) |
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184 for fb_theme in fallback: |
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185 if theme != fb_theme: |
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186 sites_and_themes.append([site, fb_theme]) |
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187 if site: |
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188 for fb_theme in fallback: |
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189 sites_and_themes.append(["", fb_theme]) |
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190 return sites_and_themes |
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191 |
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192 def _get_template_f(self, site, theme, path_elts): |
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193 """Look for template and return opened file if found |
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194 |
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195 @param site(unicode): names of site to check |
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196 (default site will also checked) |
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197 @param theme(unicode): theme to check (default theme will also be checked) |
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198 @param path_elts(iterable[str]): elements of template path |
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199 @return (tuple[(File, None), (str, None)]): a tuple with: |
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200 - opened template, or None if not found |
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201 - absolute file path, or None if not found |
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202 """ |
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203 if site is None: |
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204 raise exceptions.InternalError( |
| 3028 | 205 "_get_template_f must not be used with absolute path") |
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206 settings = self.sites_themes[site][theme]['settings'] |
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207 for site_to_check, theme_to_check in self.getSitesAndThemes( |
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208 site, theme, settings): |
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209 try: |
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210 base_path = self.sites_paths[site_to_check] |
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211 except KeyError: |
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212 log.warning(_("Unregistered site requested: {site_to_check}").format( |
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213 site_to_check=site_to_check)) |
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214 filepath = os.path.join( |
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215 base_path, |
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216 C.TEMPLATE_TPL_DIR, |
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217 theme_to_check, |
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218 *path_elts |
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219 ) |
| 3028 | 220 f = utils.open_if_exists(filepath, 'r') |
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221 if f is not None: |
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222 return f, filepath |
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223 return None, None |
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224 |
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225 def get_source(self, environment, template): |
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226 """Retrieve source handling site and themes |
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227 |
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228 If the path is absolute it is used directly if in trusted environment |
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229 else and exception is raised. |
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230 if the path is just relative, "default" theme is used. |
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231 @raise PermissionError: absolute path used in untrusted environment |
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232 """ |
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233 site, theme, template_path = self.parse_template(template) |
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234 |
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235 if site is None: |
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236 # we have an abolute template |
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237 if theme is not None: |
| 3028 | 238 raise exceptions.InternalError("We can't have a theme with absolute " |
| 239 "template.") | |
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240 if not self.trusted: |
| 3028 | 241 log.error(_("Absolute template used while unsecure is disabled, hack " |
| 242 "attempt? Template: {template}").format(template=template)) | |
| 243 raise exceptions.PermissionError("absolute template is not allowed") | |
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244 filepath = template_path |
| 3028 | 245 f = utils.open_if_exists(filepath, 'r') |
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246 else: |
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247 # relative path, we have to deal with site and theme |
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248 assert theme and template_path |
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249 path_elts = split_template_path(template_path) |
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250 # if we have non default site, we check it first, else we only check default |
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251 f, filepath = self._get_template_f(site, theme, path_elts) |
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252 |
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253 if f is None: |
| 3028 | 254 if (site is not None and path_elts[0] == "error" |
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255 and os.path.splitext(template_path)[1][1:] in HTML_EXT): |
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256 # if an HTML error is requested but doesn't exist, we try again |
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257 # with base error. |
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258 f, filepath = self._get_template_f( |
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259 site, theme, ("error", "base.html")) |
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260 if f is None: |
| 3028 | 261 raise exceptions.InternalError("error/base.html should exist") |
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262 else: |
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263 raise TemplateNotFound(template) |
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264 |
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265 try: |
| 3028 | 266 contents = f.read() |
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267 finally: |
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268 f.close() |
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269 |
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270 mtime = os.path.getmtime(filepath) |
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271 |
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272 def uptodate(): |
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273 try: |
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274 return os.path.getmtime(filepath) == mtime |
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275 except OSError: |
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276 return False |
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277 |
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278 return contents, filepath, uptodate |
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279 |
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280 |
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281 class Indexer(object): |
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282 """Index global to a page""" |
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283 |
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284 def __init__(self): |
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285 self._indexes = {} |
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286 |
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287 def next(self, value): |
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288 if value not in self._indexes: |
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289 self._indexes[value] = 0 |
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290 return 0 |
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291 self._indexes[value] += 1 |
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292 return self._indexes[value] |
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293 |
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294 def current(self, value): |
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295 return self._indexes.get(value) |
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296 |
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297 |
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298 class ScriptsHandler(object): |
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299 def __init__(self, renderer, template_data): |
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300 self.renderer = renderer |
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301 self.template_data = template_data |
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302 self.scripts = [] # we don't use a set because order may be important |
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303 |
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304 def include(self, library_name, attribute="defer"): |
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305 """Mark that a script need to be imported. |
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306 |
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307 Must be used before base.html is extended, as <script> are generated there. |
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308 If called several time with the same library, it will be imported once. |
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309 @param library_name(unicode): name of the library to import |
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310 @param loading: |
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311 """ |
| 3028 | 312 if attribute not in ("defer", "async", ""): |
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313 raise exceptions.DataError( |
| 3028 | 314 _('Invalid attribute, please use one of "defer", "async" or ""') |
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315 ) |
| 3028 | 316 if not library_name.endswith(".js"): |
| 317 library_name = library_name + ".js" | |
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318 if (library_name, attribute) not in self.scripts: |
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319 self.scripts.append((library_name, attribute)) |
| 3028 | 320 return "" |
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321 |
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322 def generate_scripts(self): |
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323 """Generate the <script> elements |
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324 |
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325 @return (unicode): <scripts> HTML tags |
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326 """ |
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327 scripts = [] |
| 3028 | 328 tpl = "<script src={src} {attribute}></script>" |
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329 for library, attribute in self.scripts: |
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330 library_path = self.renderer.getStaticPath(self.template_data, library) |
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331 if library_path is None: |
| 3028 | 332 log.warning(_("Can't find {libary} javascript library").format( |
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333 library=library)) |
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334 continue |
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335 path = self.renderer.getFrontURL(library_path) |
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336 scripts.append(tpl.format(src=quoteattr(path), attribute=attribute)) |
| 3028 | 337 return safe("\n".join(scripts)) |
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338 |
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339 |
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340 class Environment(jinja2.Environment): |
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341 |
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342 def get_template(self, name, parent=None, globals=None): |
| 3028 | 343 if name[0] not in ('/', '('): |
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344 # if name is not an absolute path or a full template name (this happen on |
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345 # extend or import during rendering), we convert it to a full template name. |
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346 # This is needed to handle cache correctly when a base template is overriden. |
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347 # Without that, we could not distinguish something like base/base.html if |
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348 # it's launched from some_site/some_theme or from [default]/default |
| 3028 | 349 name = "({site}/{theme}){template}".format( |
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350 site=self._template_data.site, |
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351 theme=self._template_data.theme, |
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352 template=name) |
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353 |
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354 return super(Environment, self).get_template(name, parent, globals) |
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355 |
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356 |
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357 class Renderer(object): |
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358 |
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359 def __init__(self, host, front_url_filter=None, trusted=False, private=False): |
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360 """ |
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361 @param front_url_filter(callable): filter to retrieve real url of a directory/file |
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362 The callable will get a two arguments: |
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363 - a dict with a "template_data" key containing TemplateData instance of |
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364 current template. Only site and theme should be necessary. |
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365 - the relative URL of the file to retrieve, relative from theme root |
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366 None to use default filter which return real path on file |
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367 Need to be specified for web rendering, to reflect URL seen by end user |
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368 @param trusted(bool): if True, allow to access absolute path |
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369 Only set to True if environment is safe (e.g. command line tool) |
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370 @param private(bool): if True, also load sites from sites_path_private_dict |
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371 """ |
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372 self.host = host |
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373 self.trusted = trusted |
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374 self.sites_paths = { |
| 3028 | 375 "": os.path.dirname(sat_templates.__file__), |
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376 } |
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377 self.sites_themes = { |
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378 } |
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379 conf = config.parseMainConf() |
| 3028 | 380 public_sites = config.getConfig(conf, None, "sites_path_public_dict", {}) |
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381 sites_data = [public_sites] |
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382 if private: |
| 3028 | 383 private_sites = config.getConfig(conf, None, "sites_path_private_dict", {}) |
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384 sites_data.append(private_sites) |
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385 for sites in sites_data: |
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386 normalised = {} |
| 3028 | 387 for name, path in sites.items(): |
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388 if RE_TPL_RESERVED_CHARS.search(name): |
| 3028 | 389 log.warning(_("Can't add \"{name}\" site, it contains forbidden " |
| 390 "characters. Forbidden characters are {forbidden}.") | |
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391 .format(name=name, forbidden=TPL_RESERVED_CHARS)) |
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392 continue |
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393 path = os.path.expanduser(os.path.normpath(path)) |
| 3028 | 394 if not path or not path.startswith("/"): |
| 395 log.warning(_("Can't add \"{name}\" site, it should map to an " | |
| 396 "absolute path").format(name=name)) | |
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397 continue |
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398 normalised[name] = path |
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399 self.sites_paths.update(normalised) |
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400 |
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401 for site, site_path in self.sites_paths.items(): |
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402 tpl_path = Path(site_path) / C.TEMPLATE_TPL_DIR |
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403 for p in tpl_path.iterdir(): |
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404 if not p.is_dir(): |
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405 continue |
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406 log.debug(f"theme found for {site or 'default site'}: {p.name}") |
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407 theme_data = self.sites_themes.setdefault(site, {})[p.name] = { |
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408 'path': p, |
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409 'settings': {}} |
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410 theme_settings = p / "settings.json" |
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411 if theme_settings.is_file: |
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412 try: |
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413 with theme_settings.open() as f: |
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414 settings = json.load(f) |
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415 except Exception as e: |
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416 log.warning(_( |
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417 "Can't load theme settings at {path}: {e}").format( |
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418 path=theme_settings, e=e)) |
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419 else: |
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420 log.debug( |
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421 f"found settings for theme {p.name!r} at {theme_settings}") |
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422 fallback = settings.get("fallback") |
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423 if fallback is None: |
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424 settings["fallback"] = [] |
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425 elif isinstance(fallback, str): |
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426 settings["fallback"] = [fallback] |
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427 elif not isinstance(fallback, list): |
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428 raise ValueError( |
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429 'incorrect type for "fallback" in settings ' |
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430 f'({type(fallback)}) at {theme_settings}: {fallback}' |
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431 ) |
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432 theme_data['settings'] = settings |
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433 browser_path = p / BROWSER_DIR |
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434 if browser_path.is_dir(): |
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435 theme_data['browser_path'] = browser_path |
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436 browser_meta_path = browser_path / BROWSER_META_FILE |
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437 if browser_meta_path.is_file(): |
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438 try: |
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439 with browser_meta_path.open() as f: |
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440 theme_data['browser_meta'] = json.load(f) |
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441 except Exception as e: |
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442 log.error( |
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443 f"Can't parse browser metadata at {browser_meta_path}: {e}" |
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444 ) |
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445 continue |
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446 |
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447 self.env = Environment( |
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448 loader=TemplateLoader( |
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449 sites_paths=self.sites_paths, |
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450 sites_themes=self.sites_themes, |
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451 trusted=trusted |
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452 ), |
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453 autoescape=jinja2.select_autoescape(["html", "xhtml", "xml"]), |
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454 trim_blocks=True, |
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455 lstrip_blocks=True, |
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456 extensions=["jinja2.ext.i18n"], |
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457 ) |
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458 self.env._template_data = None |
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459 self._locale_str = C.DEFAULT_LOCALE |
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460 self._locale = Locale.parse(self._locale_str) |
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461 self.installTranslations() |
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462 |
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463 # we want to have access to SàT constants in templates |
| 3028 | 464 self.env.globals["C"] = C |
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465 |
|
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466 # custom filters |
| 3028 | 467 self.env.filters["next_gidx"] = self._next_gidx |
| 468 self.env.filters["cur_gidx"] = self._cur_gidx | |
| 469 self.env.filters["date_fmt"] = self._date_fmt | |
| 470 self.env.filters["xmlui_class"] = self._xmlui_class | |
| 471 self.env.filters["attr_escape"] = self.attr_escape | |
| 472 self.env.filters["item_filter"] = self._item_filter | |
| 473 self.env.filters["adv_format"] = self._adv_format | |
| 474 self.env.filters["dict_ext"] = self._dict_ext | |
| 475 self.env.filters["highlight"] = self.highlight | |
| 476 self.env.filters["front_url"] = (self._front_url if front_url_filter is None | |
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477 else front_url_filter) |
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478 # custom tests |
| 3028 | 479 self.env.tests["in_the_past"] = self._in_the_past |
| 480 self.icons_path = os.path.join(host.media_dir, "fonts/fontello/svg") | |
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481 |
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482 # policies |
| 3028 | 483 self.env.policies["ext.i18n.trimmed"] = True |
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484 self.env.policies["json.dumps_kwargs"] = { |
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485 "sort_keys": True, |
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486 # if object can't be serialised, we use None |
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487 "default": lambda o: o.to_json() if hasattr(o, "to_json") else None |
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488 } |
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489 |
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490 def getFrontURL(self, template_data, path=None): |
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491 """Give front URL (i.e. URL seen by end-user) of a path |
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492 |
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493 @param template_data[TemplateData]: data of current template |
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494 @param path(unicode, None): relative path of file to get, |
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495 if set, will remplate template_data.path |
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496 """ |
| 3028 | 497 return self.env.filters["front_url"]({"template_data": template_data}, |
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498 path or template_data.path) |
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499 |
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500 def installTranslations(self): |
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501 # TODO: support multi translation |
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502 # for now, only translations in sat_templates are handled |
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503 self.translations = {} |
| 3028 | 504 for site_key, site_path in self.sites_paths.items(): |
| 505 site_prefix = "[{}] ".format(site_key) if site_key else '' | |
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506 i18n_dir = os.path.join(site_path, "i18n") |
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507 for lang_dir in os.listdir(i18n_dir): |
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508 lang_path = os.path.join(i18n_dir, lang_dir) |
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509 if not os.path.isdir(lang_path): |
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510 continue |
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511 po_path = os.path.join(lang_path, "LC_MESSAGES/sat.mo") |
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512 try: |
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513 locale = Locale.parse(lang_dir) |
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514 with open(po_path, "rb") as f: |
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515 try: |
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516 translations = self.translations[locale] |
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517 except KeyError: |
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518 self.translations[locale] = support.Translations(f, "sat") |
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519 else: |
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520 translations.merge(support.Translations(f, "sat")) |
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521 except EnvironmentError: |
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522 log.error( |
| 3028 | 523 _("Can't find template translation at {path}").format( |
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524 path=po_path)) |
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525 except UnknownLocaleError as e: |
| 3028 | 526 log.error(_("{site}Invalid locale name: {msg}").format( |
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527 site=site_prefix, msg=e)) |
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528 else: |
| 3028 | 529 log.info(_("{site}loaded {lang} templates translations").format( |
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530 site = site_prefix, |
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531 lang=lang_dir)) |
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532 |
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533 default_locale = Locale.parse(self._locale_str) |
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534 if default_locale not in self.translations: |
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535 # default locale disable gettext, |
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536 # so we can use None instead of a Translations instance |
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537 self.translations[default_locale] = None |
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538 |
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539 self.env.install_null_translations(True) |
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540 # we generate a tuple of locales ordered by display name that templates can access |
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541 # through the "locales" variable |
| 3028 | 542 self.locales = tuple(sorted(list(self.translations.keys()), |
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543 key=lambda l: l.language_name.lower())) |
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544 |
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545 |
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546 def setLocale(self, locale_str): |
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547 """set current locale |
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548 |
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549 change current translation locale and self self._locale and self._locale_str |
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550 """ |
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551 if locale_str == self._locale_str: |
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552 return |
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553 if locale_str == "en": |
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554 # we default to GB English when it's not specified |
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555 # one of the main reason is to avoid the nonsense U.S. short date format |
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556 locale_str = "en_GB" |
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557 try: |
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558 locale = Locale.parse(locale_str) |
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559 except ValueError as e: |
| 3028 | 560 log.warning(_("invalid locale value: {msg}").format(msg=e)) |
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561 locale_str = self._locale_str = C.DEFAULT_LOCALE |
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562 locale = Locale.parse(locale_str) |
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563 |
| 3028 | 564 locale_str = str(locale) |
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565 if locale_str != C.DEFAULT_LOCALE: |
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566 try: |
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567 translations = self.translations[locale] |
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568 except KeyError: |
| 3028 | 569 log.warning(_("Can't find locale {locale}".format(locale=locale))) |
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570 locale_str = C.DEFAULT_LOCALE |
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571 locale = Locale.parse(self._locale_str) |
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572 else: |
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573 self.env.install_gettext_translations(translations, True) |
| 3028 | 574 log.debug(_("Switched to {lang}").format(lang=locale.english_name)) |
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575 |
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576 if locale_str == C.DEFAULT_LOCALE: |
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577 self.env.install_null_translations(True) |
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578 |
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579 self._locale = locale |
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580 self._locale_str = locale_str |
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581 |
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582 def getThemeAndRoot(self, template): |
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583 """retrieve theme and root dir of a given template |
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584 |
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585 @param template(unicode): template to parse |
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586 @return (tuple[unicode, unicode]): theme and absolute path to theme's root dir |
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587 @raise NotFound: requested site has not been found |
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588 """ |
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589 # FIXME: check use in jp, and include site |
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590 site, theme, __ = self.env.loader.parse_template(template) |
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591 if site is None: |
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592 # absolute template |
| 3028 | 593 return "", os.path.dirname(template) |
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594 try: |
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595 site_root_dir = self.sites_paths[site] |
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596 except KeyError: |
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597 raise exceptions.NotFound |
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598 return theme, os.path.join(site_root_dir, C.TEMPLATE_TPL_DIR, theme) |
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599 |
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600 def getThemesData(self, site_name): |
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601 try: |
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602 return self.sites_themes[site_name] |
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603 except KeyError: |
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604 raise exceptions.NotFound(f"no theme found for {site_name}") |
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605 |
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606 def getStaticPath( |
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607 self, |
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608 template_data: TemplateData, |
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609 filename: str, |
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610 settings: Optional[dict]=None |
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611 ) -> Optional[TemplateData]: |
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612 """Retrieve path of a static file if it exists with current theme or default |
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613 |
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614 File will be looked at <site_root_dir>/<theme_dir>/<static_dir>/filename, |
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615 then <site_root_dir>/<default_theme_dir>/<static_dir>/filename anf finally |
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616 <default_site>/<default_theme_dir>/<static_dir> (i.e. sat_templates). |
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617 In case of absolute URL, base dir of template is used as base. For instance if |
|
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618 template is an absolute template to "/some/path/template.html", file will be |
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619 checked at "/some/path/<filename>" |
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620 @param template_data: data of current template |
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621 @param filename: name of the file to retrieve |
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622 @param settings: theme settings, can be used to modify behaviour |
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623 @return: built template data instance where .path is |
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624 the relative path to the file, from theme root dir. |
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625 None if not found. |
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626 """ |
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627 if template_data.site is None: |
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628 # we have an absolue path |
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629 if (not template_data.theme is None |
| 3028 | 630 or not template_data.path.startswith('/')): |
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631 raise exceptions.InternalError( |
| 3028 | 632 "invalid template data, was expecting absolute URL") |
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633 static_dir = os.path.dirname(template_data.path) |
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634 file_path = os.path.join(static_dir, filename) |
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635 if os.path.exists(file_path): |
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636 return TemplateData(site=None, theme=None, path=file_path) |
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637 else: |
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638 return None |
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639 |
|
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640 sites_and_themes = TemplateLoader.getSitesAndThemes(template_data.site, |
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641 template_data.theme, |
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642 settings) |
|
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643 for site, theme in sites_and_themes: |
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644 site_root_dir = self.sites_paths[site] |
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645 relative_path = os.path.join(C.TEMPLATE_STATIC_DIR, filename) |
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646 absolute_path = os.path.join(site_root_dir, C.TEMPLATE_TPL_DIR, |
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647 theme, relative_path) |
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648 if os.path.exists(absolute_path): |
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649 return TemplateData(site=site, theme=theme, path=relative_path) |
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650 |
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651 return None |
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652 |
|
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653 def _appendCSSPaths( |
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654 self, |
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655 template_data: TemplateData, |
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656 css_files: list, |
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657 css_files_noscript: list, |
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658 name_root: str, |
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659 settings: dict |
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660 |
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661 ) -> None: |
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662 """Append found css to css_files and css_files_noscript |
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663 |
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664 @param css_files: list to fill of relative path to found css file |
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665 @param css_files_noscript: list to fill of relative path to found css file |
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666 with "_noscript" suffix |
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667 """ |
| 3028 | 668 name = name_root + ".css" |
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669 css_path = self.getStaticPath(template_data, name, settings) |
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670 if css_path is not None: |
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671 css_files.append(self.getFrontURL(css_path)) |
| 3028 | 672 noscript_name = name_root + "_noscript.css" |
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673 noscript_path = self.getStaticPath( |
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674 template_data, noscript_name, settings) |
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675 if noscript_path is not None: |
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676 css_files_noscript.append(self.getFrontURL(noscript_path)) |
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677 |
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678 def getCSSFiles(self, template_data): |
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679 """Retrieve CSS files to use according template_data |
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680 |
|
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681 For each element of the path, a .css file is looked for in /static, and returned |
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682 if it exists. |
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683 Previous element are kept by replacing '/' with '_'. |
|
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684 styles_extra.css, styles.css, highlight.css and fonts.css are always used if they |
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685 exist. |
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686 For each found file, if a file with the same name and "_noscript" suffix exists, |
| 3267 | 687 it will be returned is second part of resulting tuple. |
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688 For instance, if template_data is (some_site, some_theme, blog/articles.html), |
| 3267 | 689 following files are returned, each time trying [some_site root] first, |
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690 then default site (i.e. sat_templates) root: |
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691 - some_theme/static/styles.css is returned if it exists |
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692 else default/static/styles.css |
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693 - some_theme/static/blog.css is returned if it exists |
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694 else default/static/blog.css (if it exists too) |
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695 - some_theme/static/blog_articles.css is returned if it exists |
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|
696 else default/static/blog_articles.css (if it exists too) |
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697 and for each found files, if same file with _noscript suffix exists, it is put |
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|
698 in noscript list (for instance (some_theme/static/styles_noscript.css)). |
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699 The behaviour may be changed with theme settings: if "fallback" is set, specified |
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|
700 themes will be checked instead of default. The theme will be checked in given |
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|
701 order, and "fallback" may be None or empty list to not check anything. |
|
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|
702 @param template_data(TemplateData): data of the current template |
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|
703 @return (tuple[list[unicode], list[unicode]]): a tuple with: |
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|
704 - front URLs of CSS files to use |
|
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|
705 - front URLs of CSS files to use when scripts are not enabled |
|
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706 """ |
|
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707 # TODO: some caching would be nice |
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708 css_files = [] |
|
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|
709 css_files_noscript = [] |
| 3028 | 710 path_elems = template_data.path.split('/') |
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711 path_elems[-1] = os.path.splitext(path_elems[-1])[0] |
|
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|
712 site = template_data.site |
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713 if site is None: |
|
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|
714 # absolute path |
|
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|
715 settings = {} |
|
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716 else: |
|
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717 settings = self.sites_themes[site][template_data.theme]['settings'] |
|
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|
718 |
|
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|
719 css_path = self.getStaticPath(template_data, 'fonts.css', settings) |
|
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|
720 if css_path is not None: |
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|
721 css_files.append(self.getFrontURL(css_path)) |
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722 |
| 3028 | 723 for name_root in ('styles', 'styles_extra', 'highlight'): |
|
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|
724 self._appendCSSPaths( |
|
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|
725 template_data, css_files, css_files_noscript, name_root, settings) |
| 2683 | 726 |
| 3028 | 727 for idx in range(len(path_elems)): |
| 728 name_root = "_".join(path_elems[:idx+1]) | |
|
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|
729 self._appendCSSPaths( |
|
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|
730 template_data, css_files, css_files_noscript, name_root, settings) |
|
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|
731 |
|
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|
732 return css_files, css_files_noscript |
|
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|
733 |
|
2403
dec31114c402
template: improved date formatter:
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|
734 ## custom filters ## |
|
dec31114c402
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|
735 |
|
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|
736 @contextfilter |
|
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|
737 def _front_url(self, ctx, relative_url): |
|
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|
738 """Get front URL (URL seen by end-user) from a relative URL |
|
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|
739 |
|
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|
740 This default method return absolute full path |
|
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|
741 """ |
| 3028 | 742 template_data = ctx['template_data'] |
|
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|
743 if template_data.site is None: |
|
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|
744 assert template_data.theme is None |
| 3028 | 745 assert template_data.path.startswith("/") |
|
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|
746 return os.path.join(os.path.dirname(template_data.path, relative_url)) |
|
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|
747 |
|
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|
748 site_root_dir = self.sites_paths[template_data.site] |
|
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|
749 return os.path.join(site_root_dir, C.TEMPLATE_TPL_DIR, template_data.theme, |
|
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|
750 relative_url) |
|
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changeset
|
751 |
|
2675
39d187f3698d
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Goffi <goffi@goffi.org>
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changeset
|
752 @contextfilter |
|
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|
753 def _next_gidx(self, ctx, value): |
|
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|
754 """Use next current global index as suffix""" |
|
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|
755 next_ = ctx["gidx"].next(value) |
| 3028 | 756 return value if next_ == 0 else "{}_{}".format(value, next_) |
|
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|
757 |
|
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|
758 @contextfilter |
|
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|
759 def _cur_gidx(self, ctx, value): |
|
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|
760 """Use current current global index as suffix""" |
|
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|
761 current = ctx["gidx"].current(value) |
| 3028 | 762 return value if not current else "{}_{}".format(value, current) |
|
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|
763 |
|
3311
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tools (common/template): use `to_json` instead of `json` + added missing args to `date_fmt`
Goffi <goffi@goffi.org>
parents:
3306
diff
changeset
|
764 def _date_fmt(self, timestamp, fmt="short", date_only=False, auto_limit=7, |
|
29f8122f00f3
tools (common/template): use `to_json` instead of `json` + added missing args to `date_fmt`
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changeset
|
765 auto_old_fmt="short", auto_new_fmt="relative"): |
|
2599
5b26033c49a8
tools (common): moved date_fmt function from template filters to new date_utils module, so it can be used everywhere.
Goffi <goffi@goffi.org>
parents:
2562
diff
changeset
|
766 if is_undefined(fmt): |
| 3028 | 767 fmt = "short" |
|
2453
84e84a46b014
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changeset
|
768 try: |
|
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|
769 return date_utils.date_fmt( |
|
2907
8ca12f30f61f
template (filters): set locale when using "date_fmt"
Goffi <goffi@goffi.org>
parents:
2906
diff
changeset
|
770 timestamp, fmt, date_only, auto_limit, auto_old_fmt, |
|
8ca12f30f61f
template (filters): set locale when using "date_fmt"
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changeset
|
771 locale_str = self._locale_str |
|
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|
772 ) |
|
2453
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parents:
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diff
changeset
|
773 except Exception as e: |
| 3028 | 774 log.warning(_("Can't parse date: {msg}").format(msg=e)) |
|
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|
775 return timestamp |
|
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diff
changeset
|
776 |
|
2384
d14c1a3e3244
template: new "xmlui_class" filter compute class names from name/values of requested fields.
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
777 def attr_escape(self, text): |
|
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changeset
|
778 """escape a text to a value usable as an attribute |
|
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|
779 |
|
d14c1a3e3244
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changeset
|
780 remove spaces, and put in lower case |
|
d14c1a3e3244
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changeset
|
781 """ |
| 3028 | 782 return RE_ATTR_ESCAPE.sub("_", text.strip().lower())[:50] |
|
2384
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changeset
|
783 |
|
d14c1a3e3244
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Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
784 def _xmlui_class(self, xmlui_item, fields): |
|
d14c1a3e3244
template: new "xmlui_class" filter compute class names from name/values of requested fields.
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changeset
|
785 """return classes computed from XMLUI fields name |
|
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|
786 |
|
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changeset
|
787 will return a string with a series of escaped {name}_{value} separated by spaces. |
|
d14c1a3e3244
template: new "xmlui_class" filter compute class names from name/values of requested fields.
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changeset
|
788 @param xmlui_item(xmlui.XMLUIPanel): XMLUI containing the widgets to use |
|
d14c1a3e3244
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changeset
|
789 @param fields(iterable(unicode)): names of the widgets to use |
|
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changeset
|
790 @return (unicode, None): computer string to use as class attribute value |
|
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|
791 None if no field was specified |
|
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changeset
|
792 """ |
|
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|
793 classes = [] |
|
d14c1a3e3244
template: new "xmlui_class" filter compute class names from name/values of requested fields.
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|
794 for name in fields: |
|
d14c1a3e3244
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|
795 escaped_name = self.attr_escape(name) |
|
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|
796 try: |
|
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changeset
|
797 for value in xmlui_item.widgets[name].values: |
|
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|
798 classes.append(escaped_name + "_" + self.attr_escape(value)) |
|
2384
d14c1a3e3244
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changeset
|
799 except KeyError: |
|
2624
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changeset
|
800 log.debug( |
| 3028 | 801 _('ignoring field "{name}": it doesn\'t exists').format(name=name) |
|
2624
56f94936df1e
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|
802 ) |
|
2384
d14c1a3e3244
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Goffi <goffi@goffi.org>
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2323
diff
changeset
|
803 continue |
| 3028 | 804 return " ".join(classes) or None |
|
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d14c1a3e3244
template: new "xmlui_class" filter compute class names from name/values of requested fields.
Goffi <goffi@goffi.org>
parents:
2323
diff
changeset
|
805 |
|
2675
39d187f3698d
template: import contextfilter as module attribute
Goffi <goffi@goffi.org>
parents:
2671
diff
changeset
|
806 @contextfilter |
|
2422
5425cf18929b
template: fixed the use of eval_context_filter in item_filter
Goffi <goffi@goffi.org>
parents:
2414
diff
changeset
|
807 def _item_filter(self, ctx, item, filters): |
| 2402 | 808 """return item's value, filtered if suitable |
| 809 | |
| 810 @param item(object): item to filter | |
| 811 value must have name and value attributes, | |
| 812 mostly used for XMLUI items | |
| 813 @param filters(dict[unicode, (callable, dict, None)]): map of name => filter | |
| 814 if filter is None, return the value unchanged | |
| 815 if filter is a callable, apply it | |
| 816 if filter is a dict, it can have following keys: | |
| 817 - filters: iterable of filters to apply | |
|
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818 - filters_args: kwargs of filters in the same order as filters (use empty |
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|
819 dict if needed) |
| 2402 | 820 - template: template to format where {value} is the filtered value |
| 821 """ | |
| 822 value = item.value | |
| 823 filter_ = filters.get(item.name, None) | |
| 824 if filter_ is None: | |
| 825 return value | |
| 826 elif isinstance(filter_, dict): | |
| 3028 | 827 filters_args = filter_.get("filters_args") |
| 828 for idx, f_name in enumerate(filter_.get("filters", [])): | |
|
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829 kwargs = filters_args[idx] if filters_args is not None else {} |
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830 filter_func = self.env.filters[f_name] |
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831 try: |
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832 eval_context_filter = filter_func.evalcontextfilter |
|
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833 except AttributeError: |
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834 eval_context_filter = False |
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835 |
|
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836 if eval_context_filter: |
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837 value = filter_func(ctx.eval_ctx, value, **kwargs) |
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838 else: |
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839 value = filter_func(value, **kwargs) |
| 3028 | 840 template = filter_.get("template") |
|
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841 if template: |
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842 # format will return a string, so we need to check first |
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843 # if the value is safe or not, and re-mark it after formatting |
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844 is_safe = isinstance(value, safe) |
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845 value = template.format(value=value) |
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846 if is_safe: |
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847 value = safe(value) |
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848 return value |
| 2402 | 849 |
|
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850 def _adv_format(self, value, template, **kwargs): |
|
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|
851 """Advancer formatter |
|
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852 |
|
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853 like format() method, but take care or special values like None |
|
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|
854 @param value(unicode): value to format |
|
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855 @param template(None, unicode): template to use with format() method. |
|
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|
856 It will be formatted using value=value and **kwargs |
|
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857 None to return value unchanged |
|
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858 @return (unicode): formatted value |
|
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859 """ |
|
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860 if template is None: |
|
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|
861 return value |
|
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862 # jinja use string when no special char is used, so we have to convert to unicode |
| 3028 | 863 return str(template).format(value=value, **kwargs) |
|
2391
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|
864 |
|
2425
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865 def _dict_ext(self, source_dict, extra_dict, key=None): |
|
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866 """extend source_dict with extra dict and return the result |
|
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867 |
|
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|
868 @param source_dict(dict): dictionary to extend |
|
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869 @param extra_dict(dict, None): dictionary to use to extend first one |
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870 None to return source_dict unmodified |
|
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871 @param key(unicode, None): if specified extra_dict[key] will be used |
|
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872 if it doesn't exists, a copy of unmodified source_dict is returned |
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873 @return (dict): resulting dictionary |
|
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874 """ |
|
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875 if extra_dict is None: |
|
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|
876 return source_dict |
|
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|
877 if key is not None: |
|
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|
878 extra_dict = extra_dict.get(key, {}) |
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879 ret = source_dict.copy() |
|
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|
880 ret.update(extra_dict) |
|
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|
881 return ret |
|
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|
882 |
|
2454
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883 def highlight(self, code, lexer_name=None, lexer_opts=None, html_fmt_opts=None): |
|
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|
884 """Do syntax highlighting on code |
|
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885 |
|
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|
886 Under the hood, pygments is used, check its documentation for options possible |
|
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|
887 values. |
|
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|
888 @param code(unicode): code or markup to highlight |
|
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889 @param lexer_name(unicode, None): name of the lexer to use |
|
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|
890 None to autodetect it |
|
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891 @param html_fmt_opts(dict, None): kword arguments to use for HtmlFormatter |
|
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|
892 @return (unicode): HTML markup with highlight classes |
|
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893 """ |
|
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894 if lexer_opts is None: |
|
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|
895 lexer_opts = {} |
|
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|
896 if html_fmt_opts is None: |
|
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897 html_fmt_opts = {} |
|
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|
898 if lexer_name is None: |
|
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|
899 lexer = lexers.guess_lexer(code, **lexer_opts) |
|
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|
900 else: |
|
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|
901 lexer = lexers.get_lexer_by_name(lexer_name, **lexer_opts) |
|
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|
902 formatter = formatters.HtmlFormatter(**html_fmt_opts) |
|
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|
903 return safe(pygments.highlight(code, lexer, formatter)) |
|
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|
904 |
|
2403
dec31114c402
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|
905 ## custom tests ## |
|
dec31114c402
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|
906 |
|
dec31114c402
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|
907 def _in_the_past(self, timestamp): |
|
dec31114c402
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|
908 """check if a date is in the past |
|
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|
909 |
|
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|
910 @param timestamp(unicode, int): unix time |
|
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|
911 @return (bool): True if date is in the past |
|
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|
912 """ |
|
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|
913 return time.time() > int(timestamp) |
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|
914 |
| 2515 | 915 ## template methods ## |
| 916 | |
| 917 def _icon_defs(self, *names): | |
|
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918 """Define svg icons which will be used in the template. |
|
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919 |
|
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|
920 Their name is used as id |
|
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|
921 """ |
|
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922 svg_elt = etree.Element( |
|
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923 "svg", |
|
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924 nsmap={None: "http://www.w3.org/2000/svg"}, |
|
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925 width="0", |
|
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|
926 height="0", |
|
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|
927 style="display: block", |
|
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|
928 ) |
|
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|
929 defs_elt = etree.SubElement(svg_elt, "defs") |
| 2515 | 930 for name in names: |
| 3028 | 931 path = os.path.join(self.icons_path, name + ".svg") |
| 2515 | 932 icon_svg_elt = etree.parse(path).getroot() |
| 933 # we use icon name as id, so we can retrieve them easily | |
|
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|
934 icon_svg_elt.set("id", name) |
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|
935 if not icon_svg_elt.tag == "{http://www.w3.org/2000/svg}svg": |
| 3028 | 936 raise exceptions.DataError("invalid SVG element") |
| 2515 | 937 defs_elt.append(icon_svg_elt) |
|
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|
938 return safe(etree.tostring(svg_elt, encoding="unicode")) |
| 2515 | 939 |
|
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940 def _icon_use(self, name, cls=""): |
| 3028 | 941 return safe('<svg class="svg-icon{cls}" xmlns="http://www.w3.org/2000/svg" ' |
| 942 'viewBox="0 0 100 100">\n' | |
| 943 ' <use href="#{name}"/>' | |
| 944 '</svg>\n'.format(name=name, cls=(" " + cls) if cls else "")) | |
| 2515 | 945 |
|
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946 def _icon_from_client(self, client): |
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947 """Get icon name to represent a disco client""" |
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948 if client is None: |
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949 return 'desktop' |
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950 elif 'pc' in client: |
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951 return 'desktop' |
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952 elif 'phone' in client: |
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953 return 'mobile' |
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954 elif 'web' in client: |
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955 return 'globe' |
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956 elif 'console' in client: |
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957 return 'terminal' |
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958 else: |
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959 return 'desktop' |
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960 |
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961 def render(self, template, site=None, theme=None, locale=C.DEFAULT_LOCALE, |
| 3028 | 962 media_path="", css_files=None, css_inline=False, **kwargs): |
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963 """Render a template |
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964 |
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965 @param template(unicode): template to render (e.g. blog/articles.html) |
| 3267 | 966 @param site(unicode): site name |
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967 None or empty string for defaut site (i.e. SàT templates) |
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968 @param theme(unicode): template theme |
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969 @param media_path(unicode): prefix of the SàT media path/URL to use for |
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970 template root. Must end with a u'/' |
| 3267 | 971 @param css_files(list[unicode],None): CSS files to use |
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972 CSS files must be in static dir of the template |
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973 use None for automatic selection of CSS files based on template category |
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974 None is recommended. General static/style.css and theme file name will be |
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975 used. |
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976 @param css_inline(bool): if True, CSS will be embedded in the HTML page |
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977 @param **kwargs: variable to transmit to the template |
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978 """ |
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979 if not template: |
| 3028 | 980 raise ValueError("template can't be empty") |
|
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981 if site is not None or theme is not None: |
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982 # user wants to set site and/or theme, so we add it to the template path |
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983 if site is None: |
| 3028 | 984 site = '' |
|
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985 if theme is None: |
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986 theme = C.TEMPLATE_THEME_DEFAULT |
| 3028 | 987 if template[0] == "(": |
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988 raise ValueError( |
| 3028 | 989 "you can't specify site or theme in template path and in argument " |
| 990 "at the same time" | |
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991 ) |
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992 |
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993 template_data = TemplateData(site, theme, template) |
| 3028 | 994 template = "({site}/{theme}){template}".format( |
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995 site=site, theme=theme, template=template) |
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996 else: |
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997 template_data = self.env.loader.parse_template(template) |
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998 |
|
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999 # we need to save template_data in environment, to load right templates when they |
|
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1000 # are referenced from other templates (e.g. import) |
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1001 # FIXME: this trick will not work anymore if we use async templates (it works |
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1002 # here because we know that the rendering will be blocking until we unset |
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1003 # _template_data) |
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1004 self.env._template_data = template_data |
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1005 |
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1006 template_source = self.env.get_template(template) |
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1007 |
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1008 if css_files is None: |
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1009 css_files, css_files_noscript = self.getCSSFiles(template_data) |
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1010 |
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1011 kwargs["icon_defs"] = self._icon_defs |
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1012 kwargs["icon"] = self._icon_use |
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1013 kwargs["icon_from_client"] = self._icon_from_client |
| 2515 | 1014 |
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1015 if css_inline: |
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1016 css_contents = [] |
| 3028 | 1017 for files, suffix in ((css_files, ""), |
| 1018 (css_files_noscript, "_noscript")): | |
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1019 site_root_dir = self.sites_paths[template_data.site] |
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1020 for css_file in files: |
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1021 css_file_path = os.path.join(site_root_dir, css_file) |
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1022 with open(css_file_path) as f: |
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1023 css_contents.append(f.read()) |
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1024 if css_contents: |
| 3028 | 1025 kwargs["css_content" + suffix] = "\n".join(css_contents) |
|
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1026 |
|
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1027 scripts_handler = ScriptsHandler(self, template_data) |
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1028 self.setLocale(locale) |
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1029 |
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1030 # XXX: theme used in template arguments is the requested theme, which may differ |
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1031 # from actual theme if the template doesn't exist in the requested theme. |
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1032 rendered = template_source.render( |
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1033 template_data=template_data, |
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1034 media_path=media_path, |
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1035 css_files=css_files, |
|
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1036 css_files_noscript=css_files_noscript, |
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1037 locale=self._locale, |
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1038 locales=self.locales, |
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1039 gidx=Indexer(), |
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1040 script=scripts_handler, |
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1041 **kwargs |
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1042 ) |
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1043 self.env._template_data = None |
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1044 return rendered |