Mercurial > libervia-backend
annotate sat/tools/common/template.py @ 3177:f4914ce9d47d
jp (blog/edit): added `--no-publish` argument.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Tue, 18 Feb 2020 18:17:18 +0100 |
| parents | 559a625a236b |
| children | 8ec5ddb4e759 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
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3 |
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4 # SAT: a jabber client |
| 3136 | 5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org) |
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6 |
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7 # This program is free software: you can redistribute it and/or modify |
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8 # it under the terms of the GNU Affero General Public License as published by |
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9 # the Free Software Foundation, either version 3 of the License, or |
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10 # (at your option) any later version. |
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11 |
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12 # This program is distributed in the hope that it will be useful, |
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU Affero General Public License for more details. |
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16 |
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17 # You should have received a copy of the GNU Affero General Public License |
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 """Template generation""" |
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21 |
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22 import os.path |
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23 from collections import namedtuple |
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24 from sat.core.constants import Const as C |
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25 from sat.core.i18n import _ |
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26 from sat.core import exceptions |
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27 from sat.tools import config |
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28 from sat.tools.common import date_utils |
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29 from sat.core.log import getLogger |
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30 from xml.sax.saxutils import quoteattr |
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31 import time |
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32 import re |
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33 from babel import support |
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34 from babel import Locale |
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35 from babel.core import UnknownLocaleError |
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36 import pygments |
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37 from pygments import lexers |
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38 from pygments import formatters |
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39 |
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40 log = getLogger(__name__) |
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41 |
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42 try: |
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43 import sat_templates |
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44 except ImportError: |
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45 raise exceptions.MissingModule( |
| 3028 | 46 "sat_templates module is not available, please install it or check your path to " |
| 47 "use template engine" | |
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48 ) |
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49 else: |
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50 sat_templates # to avoid pyflakes warning |
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51 |
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52 try: |
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53 import jinja2 |
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54 except: |
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55 raise exceptions.MissingModule( |
| 3028 | 56 "Missing module jinja2, please install it from http://jinja.pocoo.org or with " |
| 57 "pip install jinja2" | |
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58 ) |
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59 |
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60 from jinja2 import Markup as safe |
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61 from jinja2 import is_undefined |
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62 from jinja2 import utils |
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63 from jinja2 import TemplateNotFound |
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64 from jinja2 import contextfilter |
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65 from jinja2.loaders import split_template_path |
| 2515 | 66 from lxml import etree |
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67 |
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68 HTML_EXT = ("html", "xhtml") |
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69 RE_ATTR_ESCAPE = re.compile(r"[^a-z_-]") |
| 3028 | 70 SITE_RESERVED_NAMES = ("sat",) |
| 71 TPL_RESERVED_CHARS = r"()/." | |
| 72 RE_TPL_RESERVED_CHARS = re.compile("[" + TPL_RESERVED_CHARS + "]") | |
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73 |
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74 TemplateData = namedtuple("TemplateData", ['site', 'theme', 'path']) |
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75 |
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76 |
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77 class TemplateLoader(jinja2.BaseLoader): |
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78 """A template loader which handle site, theme and absolute paths""" |
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79 # TODO: list_templates should be implemented |
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80 |
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81 def __init__(self, sites_paths, trusted=False): |
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82 """ |
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83 @param trusted(bool): if True, absolue template paths will be allowed |
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84 be careful when using this option and sure that you can trust the template, |
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85 as this allow the template to open any file on the system that the |
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86 launching user can access. |
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87 """ |
| 3028 | 88 if not sites_paths or not "" in sites_paths: |
| 89 raise exceptions.InternalError("Invalid sites_paths") | |
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90 super(jinja2.BaseLoader, self).__init__() |
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91 self.sites_paths = sites_paths |
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92 self.trusted = trusted |
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93 |
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94 @staticmethod |
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95 def parse_template(template): |
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96 """Parse template path and return site, theme and path |
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97 |
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98 @param template_path(unicode): path to template with parenthesis syntax |
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99 The site and/or theme can be specified in parenthesis just before the path |
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100 e.g.: (some_theme)path/to/template.html |
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101 (/some_theme)path/to/template.html (equivalent to previous one) |
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102 (other_site/other_theme)path/to/template.html |
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103 (other_site/)path/to/template.html (defaut theme for other_site) |
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104 /absolute/path/to/template.html (in trusted environment only) |
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105 @return (TemplateData): |
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106 site, theme and template_path. |
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107 if site is empty, SàT Templates are used |
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108 site and theme can be both None if absolute path is used |
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109 Relative path is the path from theme root dir e.g. blog/articles.html |
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110 """ |
| 3028 | 111 if template.startswith("("): |
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112 # site and/or theme are specified |
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113 try: |
| 3028 | 114 theme_end = template.index(")") |
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115 except IndexError: |
| 3028 | 116 raise ValueError("incorrect site/theme in template") |
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117 theme_data = template[1:theme_end] |
| 3028 | 118 theme_splitted = theme_data.split('/') |
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119 if len(theme_splitted) == 1: |
| 3028 | 120 site, theme = "", theme_splitted[0] |
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121 elif len(theme_splitted) == 2: |
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122 site, theme = theme_splitted |
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123 else: |
| 3028 | 124 raise ValueError("incorrect site/theme in template") |
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125 template_path = template[theme_end+1:] |
| 3028 | 126 if not template_path or template_path.startswith("/"): |
| 127 raise ValueError("incorrect template path") | |
| 128 elif template.startswith("/"): | |
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129 # this is an absolute path, so we have no site and no theme |
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130 site = None |
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131 theme = None |
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132 template_path = template |
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133 else: |
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134 # a default template |
| 3028 | 135 site = "" |
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136 theme = C.TEMPLATE_THEME_DEFAULT |
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137 template_path = template |
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138 |
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139 if site is not None: |
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140 site = site.strip() |
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141 if not site: |
| 3028 | 142 site = "" |
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143 elif site in SITE_RESERVED_NAMES: |
| 3028 | 144 raise ValueError(_("{site} can't be used as site name, " |
| 145 "it's reserved.").format(site=site)) | |
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146 |
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147 if theme is not None: |
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148 theme = theme.strip() |
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149 if not theme: |
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150 theme = C.TEMPLATE_THEME_DEFAULT |
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151 if RE_TPL_RESERVED_CHARS.search(theme): |
| 3028 | 152 raise ValueError(_("{theme} contain forbidden char. Following chars " |
| 153 "are forbidden: {reserved}").format( | |
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154 theme=theme, reserved=TPL_RESERVED_CHARS)) |
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155 |
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156 return TemplateData(site, theme, template_path) |
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157 |
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158 @staticmethod |
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159 def getSitesAndThemes(site, theme): |
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160 """Get sites and themes to check for template/file |
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161 |
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162 Will add default theme and default site in search list when suitable |
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163 @param site(unicode): site requested |
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164 @param theme(unicode): theme requested |
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165 @return (list[tuple[unicode, unicode]]): site and theme couples to check |
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166 """ |
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167 sites_and_themes = [[site, theme]] |
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168 if theme != C.TEMPLATE_THEME_DEFAULT: |
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169 sites_and_themes.append([site, C.TEMPLATE_THEME_DEFAULT]) |
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170 if site: |
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171 # the site is not the default one, so we add default at the end |
| 3028 | 172 sites_and_themes.append(['', C.TEMPLATE_THEME_DEFAULT]) |
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173 return sites_and_themes |
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174 |
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175 def _get_template_f(self, site, theme, path_elts): |
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176 """Look for template and return opened file if found |
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177 |
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178 @param site(unicode): names of site to check |
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179 (default site will also checked) |
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180 @param theme(unicode): theme to check (default theme will also be checked) |
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181 @param path_elts(iterable[str]): elements of template path |
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182 @return (tuple[(File, None), (str, None)]): a tuple with: |
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183 - opened template, or None if not found |
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184 - absolute file path, or None if not found |
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185 """ |
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186 if site is None: |
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187 raise exceptions.InternalError( |
| 3028 | 188 "_get_template_f must not be used with absolute path") |
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189 for site, theme in self.getSitesAndThemes(site, theme): |
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190 try: |
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191 base_path = self.sites_paths[site] |
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192 except KeyError: |
| 3028 | 193 log.warning(_("Unregistered site requested: {site}").format( |
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194 site=site)) |
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195 filepath = os.path.join(base_path, C.TEMPLATE_TPL_DIR, theme, *path_elts) |
| 3028 | 196 f = utils.open_if_exists(filepath, 'r') |
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197 if f is not None: |
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198 return f, filepath |
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199 return None, None |
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200 |
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201 def get_source(self, environment, template): |
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202 """Retrieve source handling site and themes |
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203 |
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204 If the path is absolute it is used directly if in trusted environment |
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205 else and exception is raised. |
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206 if the path is just relative, "default" theme is used. |
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207 @raise PermissionError: absolute path used in untrusted environment |
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208 """ |
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209 site, theme, template_path = self.parse_template(template) |
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210 |
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211 if site is None: |
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212 # we have an abolute template |
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213 if theme is not None: |
| 3028 | 214 raise exceptions.InternalError("We can't have a theme with absolute " |
| 215 "template.") | |
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216 if not self.trusted: |
| 3028 | 217 log.error(_("Absolute template used while unsecure is disabled, hack " |
| 218 "attempt? Template: {template}").format(template=template)) | |
| 219 raise exceptions.PermissionError("absolute template is not allowed") | |
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220 filepath = template_path |
| 3028 | 221 f = utils.open_if_exists(filepath, 'r') |
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222 else: |
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223 # relative path, we have to deal with site and theme |
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224 assert theme and template_path |
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225 path_elts = split_template_path(template_path) |
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226 # if we have non default site, we check it first, else we only check default |
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227 f, filepath = self._get_template_f(site, theme, path_elts) |
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228 |
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229 if f is None: |
| 3028 | 230 if (site is not None and path_elts[0] == "error" |
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231 and os.path.splitext(template_path)[1][1:] in HTML_EXT): |
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232 # if an HTML error is requested but doesn't exist, we try again |
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233 # with base error. |
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234 f, filepath = self._get_template_f( |
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235 site, theme, ("error", "base.html")) |
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236 if f is None: |
| 3028 | 237 raise exceptions.InternalError("error/base.html should exist") |
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238 else: |
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239 raise TemplateNotFound(template) |
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240 |
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241 try: |
| 3028 | 242 contents = f.read() |
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243 finally: |
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244 f.close() |
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245 |
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246 mtime = os.path.getmtime(filepath) |
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247 |
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248 def uptodate(): |
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249 try: |
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250 return os.path.getmtime(filepath) == mtime |
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251 except OSError: |
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252 return False |
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253 |
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254 return contents, filepath, uptodate |
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255 |
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256 |
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257 class Indexer(object): |
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258 """Index global to a page""" |
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259 |
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260 def __init__(self): |
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261 self._indexes = {} |
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262 |
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263 def next(self, value): |
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264 if value not in self._indexes: |
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265 self._indexes[value] = 0 |
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266 return 0 |
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267 self._indexes[value] += 1 |
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268 return self._indexes[value] |
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269 |
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270 def current(self, value): |
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271 return self._indexes.get(value) |
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272 |
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273 |
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274 class ScriptsHandler(object): |
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275 def __init__(self, renderer, template_data): |
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276 self.renderer = renderer |
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277 self.template_data = template_data |
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278 self.scripts = [] # we don't use a set because order may be important |
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279 |
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280 def include(self, library_name, attribute="defer"): |
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281 """Mark that a script need to be imported. |
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282 |
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283 Must be used before base.html is extended, as <script> are generated there. |
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284 If called several time with the same library, it will be imported once. |
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285 @param library_name(unicode): name of the library to import |
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286 @param loading: |
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287 """ |
| 3028 | 288 if attribute not in ("defer", "async", ""): |
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289 raise exceptions.DataError( |
| 3028 | 290 _('Invalid attribute, please use one of "defer", "async" or ""') |
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291 ) |
| 3028 | 292 if not library_name.endswith(".js"): |
| 293 library_name = library_name + ".js" | |
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294 if (library_name, attribute) not in self.scripts: |
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295 self.scripts.append((library_name, attribute)) |
| 3028 | 296 return "" |
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297 |
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298 def generate_scripts(self): |
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299 """Generate the <script> elements |
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300 |
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301 @return (unicode): <scripts> HTML tags |
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302 """ |
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303 scripts = [] |
| 3028 | 304 tpl = "<script src={src} {attribute}></script>" |
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305 for library, attribute in self.scripts: |
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306 library_path = self.renderer.getStaticPath(self.template_data, library) |
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307 if library_path is None: |
| 3028 | 308 log.warning(_("Can't find {libary} javascript library").format( |
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309 library=library)) |
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310 continue |
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311 path = self.renderer.getFrontURL(library_path) |
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312 scripts.append(tpl.format(src=quoteattr(path), attribute=attribute)) |
| 3028 | 313 return safe("\n".join(scripts)) |
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314 |
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315 |
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316 class Environment(jinja2.Environment): |
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317 |
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318 def get_template(self, name, parent=None, globals=None): |
| 3028 | 319 if name[0] not in ('/', '('): |
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320 # if name is not an absolute path or a full template name (this happen on |
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321 # extend or import during rendering), we convert it to a full template name. |
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322 # This is needed to handle cache correctly when a base template is overriden. |
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323 # Without that, we could not distinguish something like base/base.html if |
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324 # it's launched from some_site/some_theme or from [default]/default |
| 3028 | 325 name = "({site}/{theme}){template}".format( |
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326 site=self._template_data.site, |
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327 theme=self._template_data.theme, |
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328 template=name) |
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329 |
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330 return super(Environment, self).get_template(name, parent, globals) |
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331 |
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332 |
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333 class Renderer(object): |
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334 |
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335 def __init__(self, host, front_url_filter=None, trusted=False, private=False): |
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336 """ |
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337 @param front_url_filter(callable): filter to retrieve real url of a directory/file |
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338 The callable will get a two arguments: |
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339 - a dict with a "template_data" key containing TemplateData instance of |
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340 current template. Only site and theme should be necessary. |
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341 - the relative URL of the file to retrieve, relative from theme root |
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342 None to use default filter which return real path on file |
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343 Need to be specified for web rendering, to reflect URL seen by end user |
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344 @param trusted(bool): if True, allow to access absolute path |
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345 Only set to True if environment is safe (e.g. command line tool) |
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346 @param private(bool): if True, also load sites from sites_path_private_dict |
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347 """ |
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348 self.host = host |
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349 self.trusted = trusted |
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350 self.sites_paths = { |
| 3028 | 351 "": os.path.dirname(sat_templates.__file__), |
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352 } |
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353 conf = config.parseMainConf() |
| 3028 | 354 public_sites = config.getConfig(conf, None, "sites_path_public_dict", {}) |
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355 sites_data = [public_sites] |
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356 if private: |
| 3028 | 357 private_sites = config.getConfig(conf, None, "sites_path_private_dict", {}) |
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358 sites_data.append(private_sites) |
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359 for sites in sites_data: |
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360 normalised = {} |
| 3028 | 361 for name, path in sites.items(): |
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362 if RE_TPL_RESERVED_CHARS.search(name): |
| 3028 | 363 log.warning(_("Can't add \"{name}\" site, it contains forbidden " |
| 364 "characters. Forbidden characters are {forbidden}.") | |
|
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365 .format(name=name, forbidden=TPL_RESERVED_CHARS)) |
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366 continue |
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367 path = os.path.expanduser(os.path.normpath(path)) |
| 3028 | 368 if not path or not path.startswith("/"): |
| 369 log.warning(_("Can't add \"{name}\" site, it should map to an " | |
| 370 "absolute path").format(name=name)) | |
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371 continue |
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372 normalised[name] = path |
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373 self.sites_paths.update(normalised) |
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374 |
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375 self.env = Environment( |
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376 loader=TemplateLoader(sites_paths=self.sites_paths, trusted=trusted), |
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377 autoescape=jinja2.select_autoescape(["html", "xhtml", "xml"]), |
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378 trim_blocks=True, |
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379 lstrip_blocks=True, |
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380 extensions=["jinja2.ext.i18n"], |
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381 ) |
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382 self.env._template_data = None |
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383 self._locale_str = C.DEFAULT_LOCALE |
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384 self._locale = Locale.parse(self._locale_str) |
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385 self.installTranslations() |
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386 |
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387 # we want to have access to SàT constants in templates |
| 3028 | 388 self.env.globals["C"] = C |
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389 |
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390 # custom filters |
| 3028 | 391 self.env.filters["next_gidx"] = self._next_gidx |
| 392 self.env.filters["cur_gidx"] = self._cur_gidx | |
| 393 self.env.filters["date_fmt"] = self._date_fmt | |
| 394 self.env.filters["xmlui_class"] = self._xmlui_class | |
| 395 self.env.filters["attr_escape"] = self.attr_escape | |
| 396 self.env.filters["item_filter"] = self._item_filter | |
| 397 self.env.filters["adv_format"] = self._adv_format | |
| 398 self.env.filters["dict_ext"] = self._dict_ext | |
| 399 self.env.filters["highlight"] = self.highlight | |
| 400 self.env.filters["front_url"] = (self._front_url if front_url_filter is None | |
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401 else front_url_filter) |
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402 # custom tests |
| 3028 | 403 self.env.tests["in_the_past"] = self._in_the_past |
| 404 self.icons_path = os.path.join(host.media_dir, "fonts/fontello/svg") | |
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405 |
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406 # policies |
| 3028 | 407 self.env.policies["ext.i18n.trimmed"] = True |
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408 |
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409 def getFrontURL(self, template_data, path=None): |
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410 """Give front URL (i.e. URL seen by end-user) of a path |
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411 |
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412 @param template_data[TemplateData]: data of current template |
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413 @param path(unicode, None): relative path of file to get, |
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414 if set, will remplate template_data.path |
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415 """ |
| 3028 | 416 return self.env.filters["front_url"]({"template_data": template_data}, |
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417 path or template_data.path) |
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418 |
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419 def installTranslations(self): |
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420 # TODO: support multi translation |
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421 # for now, only translations in sat_templates are handled |
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422 self.translations = {} |
| 3028 | 423 for site_key, site_path in self.sites_paths.items(): |
| 424 site_prefix = "[{}] ".format(site_key) if site_key else '' | |
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425 i18n_dir = os.path.join(site_path, "i18n") |
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426 for lang_dir in os.listdir(i18n_dir): |
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427 lang_path = os.path.join(i18n_dir, lang_dir) |
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428 if not os.path.isdir(lang_path): |
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429 continue |
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430 po_path = os.path.join(lang_path, "LC_MESSAGES/sat.mo") |
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431 try: |
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432 locale = Locale.parse(lang_dir) |
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433 with open(po_path, "rb") as f: |
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434 try: |
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435 translations = self.translations[locale] |
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436 except KeyError: |
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437 self.translations[locale] = support.Translations(f, "sat") |
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438 else: |
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439 translations.merge(support.Translations(f, "sat")) |
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440 except EnvironmentError: |
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441 log.error( |
| 3028 | 442 _("Can't find template translation at {path}").format( |
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443 path=po_path)) |
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444 except UnknownLocaleError as e: |
| 3028 | 445 log.error(_("{site}Invalid locale name: {msg}").format( |
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446 site=site_prefix, msg=e)) |
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447 else: |
| 3028 | 448 log.info(_("{site}loaded {lang} templates translations").format( |
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449 site = site_prefix, |
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450 lang=lang_dir)) |
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451 |
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452 default_locale = Locale.parse(self._locale_str) |
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453 if default_locale not in self.translations: |
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454 # default locale disable gettext, |
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455 # so we can use None instead of a Translations instance |
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456 self.translations[default_locale] = None |
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457 |
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458 self.env.install_null_translations(True) |
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459 # we generate a tuple of locales ordered by display name that templates can access |
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460 # through the "locales" variable |
| 3028 | 461 self.locales = tuple(sorted(list(self.translations.keys()), |
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462 key=lambda l: l.language_name.lower())) |
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463 |
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464 |
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465 def setLocale(self, locale_str): |
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466 """set current locale |
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467 |
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468 change current translation locale and self self._locale and self._locale_str |
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469 """ |
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470 if locale_str == self._locale_str: |
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471 return |
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472 if locale_str == "en": |
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473 # we default to GB English when it's not specified |
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474 # one of the main reason is to avoid the nonsense U.S. short date format |
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475 locale_str = "en_GB" |
|
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476 try: |
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477 locale = Locale.parse(locale_str) |
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478 except ValueError as e: |
| 3028 | 479 log.warning(_("invalid locale value: {msg}").format(msg=e)) |
|
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480 locale_str = self._locale_str = C.DEFAULT_LOCALE |
|
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481 locale = Locale.parse(locale_str) |
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482 |
| 3028 | 483 locale_str = str(locale) |
|
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484 if locale_str != C.DEFAULT_LOCALE: |
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485 try: |
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486 translations = self.translations[locale] |
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487 except KeyError: |
| 3028 | 488 log.warning(_("Can't find locale {locale}".format(locale=locale))) |
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489 locale_str = C.DEFAULT_LOCALE |
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490 locale = Locale.parse(self._locale_str) |
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491 else: |
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492 self.env.install_gettext_translations(translations, True) |
| 3028 | 493 log.debug(_("Switched to {lang}").format(lang=locale.english_name)) |
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494 |
|
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495 if locale_str == C.DEFAULT_LOCALE: |
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496 self.env.install_null_translations(True) |
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497 |
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498 self._locale = locale |
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499 self._locale_str = locale_str |
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500 |
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501 def getThemeAndRoot(self, template): |
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502 """retrieve theme and root dir of a given tempalte |
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503 |
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504 @param template(unicode): template to parse |
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505 @return (tuple[unicode, unicode]): theme and absolute path to theme's root dir |
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506 @raise NotFound: requested site has not been found |
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507 """ |
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508 # FIXME: check use in jp, and include site |
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509 site, theme, __ = self.env.loader.parse_template(template) |
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510 if site is None: |
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511 # absolute template |
| 3028 | 512 return "", os.path.dirname(template) |
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513 try: |
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514 site_root_dir = self.sites_paths[site] |
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515 except KeyError: |
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516 raise exceptions.NotFound |
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517 return theme, os.path.join(site_root_dir, C.TEMPLATE_TPL_DIR, theme) |
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518 |
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519 def getStaticPath(self, template_data, filename): |
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520 """Retrieve path of a static file if it exists with current theme or default |
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521 |
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522 File will be looked at <site_root_dir>/<theme_dir>/<static_dir>/filename, |
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523 then <site_root_dir>/<default_theme_dir>/<static_dir>/filename anf finally |
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524 <default_site>/<default_theme_dir>/<static_dir> (i.e. sat_templates). |
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525 In case of absolue URL, base dir of template is used as base. For instance if |
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526 template is an absolute template to "/some/path/template.html", file will be |
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527 checked at "/some/path/<filename>" |
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528 @param template_data(TemplateData): data of current template |
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529 @return (TemplateData, None): built template data instance where .path is |
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530 the relative path to the file, from theme root dir. |
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531 None if not found. |
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532 """ |
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533 if template_data.site is None: |
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534 # we have and absolue path |
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535 if (not template_data.theme is None |
| 3028 | 536 or not template_data.path.startswith('/')): |
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537 raise exceptions.InternalError( |
| 3028 | 538 "invalid template data, was expecting absolute URL") |
|
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539 static_dir = os.path.dirname(template_data.path) |
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540 file_path = os.path.join(static_dir, filename) |
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541 if os.path.exists(file_path): |
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542 return TemplateData(site=None, theme=None, path=file_path) |
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543 else: |
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544 return None |
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545 |
|
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546 sites_and_themes = TemplateLoader.getSitesAndThemes(template_data.site, |
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547 template_data.theme) |
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548 for site, theme in sites_and_themes: |
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549 site_root_dir = self.sites_paths[site] |
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550 relative_path = os.path.join(C.TEMPLATE_STATIC_DIR, filename) |
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551 absolute_path = os.path.join(site_root_dir, C.TEMPLATE_TPL_DIR, |
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552 theme, relative_path) |
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553 if os.path.exists(absolute_path): |
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554 return TemplateData(site=site, theme=theme, path=relative_path) |
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555 |
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556 return None |
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557 |
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558 def _appendCSSPaths(self, template_data, css_files, css_files_noscript, name_root): |
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559 """Append found css to css_files and css_files_noscript |
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560 |
|
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561 @param css_files(list): list to fill of relative path to found css file |
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562 @param css_files_noscript(list): list to fill of relative path to found css file |
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563 with "_noscript" suffix |
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564 """ |
| 3028 | 565 name = name_root + ".css" |
|
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566 css_path = self.getStaticPath(template_data, name) |
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567 if css_path is not None: |
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568 css_files.append(self.getFrontURL(css_path)) |
| 3028 | 569 noscript_name = name_root + "_noscript.css" |
|
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570 noscript_path = self.getStaticPath(template_data, noscript_name) |
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571 if noscript_path is not None: |
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572 css_files_noscript.append(self.getFrontURL(noscript_path)) |
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573 |
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574 def getCSSFiles(self, template_data): |
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575 """Retrieve CSS files to use according template_data |
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576 |
|
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577 For each element of the path, a .css file is looked for in /static, and returned |
|
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578 if it exists. |
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579 Previous element are kept by replacing '/' with '_'. |
|
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580 styles_extra.css, styles.css, highlight.css and fonts.css are always used if they |
|
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|
581 exist. |
|
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582 For each found file, if a file with the same name and "_noscript" suffix exists, |
|
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|
583 it will be return is second part of resulting tuple. |
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584 For instance, if template_data is (some_site, some_theme, blog/articles.html), |
|
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585 following files are returned, earch time trying [some_site root] first, |
|
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586 then default site (i.e. sat_templates) root: |
|
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587 - some_theme/static/styles.css is returned if it exists |
|
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588 else default/static/styles.css |
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589 - some_theme/static/blog.css is returned if it exists |
|
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590 else default/static/blog.css (if it exists too) |
|
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591 - some_theme/static/blog_articles.css is returned if it exists |
|
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592 else default/static/blog_articles.css (if it exists too) |
|
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593 and for each found files, if same file with _noscript suffix exists, it is put |
|
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594 in noscript list (for instance (some_theme/static/styles_noscript.css)). |
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595 @param template_data(TemplateData): data of the current template |
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596 @return (tuple[list[unicode], list[unicode]]): a tuple with: |
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597 - front URLs of CSS files to use |
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598 - front URLs of CSS files to use when scripts are not enabled |
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599 """ |
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600 # TODO: some caching would be nice |
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601 css_files = [] |
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602 css_files_noscript = [] |
| 3028 | 603 path_elems = template_data.path.split('/') |
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604 path_elems[-1] = os.path.splitext(path_elems[-1])[0] |
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605 |
| 3028 | 606 css_path = self.getStaticPath(template_data, 'fonts.css') |
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607 if css_path is not None: |
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608 css_files.append(self.getFrontURL(css_path)) |
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609 |
| 3028 | 610 for name_root in ('styles', 'styles_extra', 'highlight'): |
| 2683 | 611 self._appendCSSPaths(template_data, css_files, css_files_noscript, name_root) |
| 612 | |
| 3028 | 613 for idx in range(len(path_elems)): |
| 614 name_root = "_".join(path_elems[:idx+1]) | |
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615 self._appendCSSPaths(template_data, css_files, css_files_noscript, name_root) |
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616 |
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617 return css_files, css_files_noscript |
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618 |
|
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619 ## custom filters ## |
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620 |
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621 @contextfilter |
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622 def _front_url(self, ctx, relative_url): |
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623 """Get front URL (URL seen by end-user) from a relative URL |
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624 |
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625 This default method return absolute full path |
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626 """ |
| 3028 | 627 template_data = ctx['template_data'] |
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628 if template_data.site is None: |
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629 assert template_data.theme is None |
| 3028 | 630 assert template_data.path.startswith("/") |
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631 return os.path.join(os.path.dirname(template_data.path, relative_url)) |
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632 |
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633 site_root_dir = self.sites_paths[template_data.site] |
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634 return os.path.join(site_root_dir, C.TEMPLATE_TPL_DIR, template_data.theme, |
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635 relative_url) |
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636 |
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637 @contextfilter |
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638 def _next_gidx(self, ctx, value): |
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639 """Use next current global index as suffix""" |
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640 next_ = ctx["gidx"].next(value) |
| 3028 | 641 return value if next_ == 0 else "{}_{}".format(value, next_) |
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642 |
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643 @contextfilter |
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644 def _cur_gidx(self, ctx, value): |
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645 """Use current current global index as suffix""" |
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646 current = ctx["gidx"].current(value) |
| 3028 | 647 return value if not current else "{}_{}".format(value, current) |
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648 |
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649 def _date_fmt(self, timestamp, fmt="short", date_only=False, auto_limit=None, |
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650 auto_old_fmt=None): |
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651 if is_undefined(fmt): |
| 3028 | 652 fmt = "short" |
|
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653 try: |
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654 return date_utils.date_fmt( |
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655 timestamp, fmt, date_only, auto_limit, auto_old_fmt, |
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656 locale_str = self._locale_str |
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657 ) |
|
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658 except Exception as e: |
| 3028 | 659 log.warning(_("Can't parse date: {msg}").format(msg=e)) |
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660 return timestamp |
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661 |
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662 def attr_escape(self, text): |
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663 """escape a text to a value usable as an attribute |
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664 |
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665 remove spaces, and put in lower case |
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666 """ |
| 3028 | 667 return RE_ATTR_ESCAPE.sub("_", text.strip().lower())[:50] |
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668 |
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669 def _xmlui_class(self, xmlui_item, fields): |
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670 """return classes computed from XMLUI fields name |
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671 |
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672 will return a string with a series of escaped {name}_{value} separated by spaces. |
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673 @param xmlui_item(xmlui.XMLUIPanel): XMLUI containing the widgets to use |
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674 @param fields(iterable(unicode)): names of the widgets to use |
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675 @return (unicode, None): computer string to use as class attribute value |
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676 None if no field was specified |
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677 """ |
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678 classes = [] |
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679 for name in fields: |
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680 escaped_name = self.attr_escape(name) |
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681 try: |
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682 for value in xmlui_item.widgets[name].values: |
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683 classes.append(escaped_name + "_" + self.attr_escape(value)) |
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684 except KeyError: |
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685 log.debug( |
| 3028 | 686 _('ignoring field "{name}": it doesn\'t exists').format(name=name) |
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687 ) |
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688 continue |
| 3028 | 689 return " ".join(classes) or None |
|
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690 |
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691 @contextfilter |
|
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692 def _item_filter(self, ctx, item, filters): |
| 2402 | 693 """return item's value, filtered if suitable |
| 694 | |
| 695 @param item(object): item to filter | |
| 696 value must have name and value attributes, | |
| 697 mostly used for XMLUI items | |
| 698 @param filters(dict[unicode, (callable, dict, None)]): map of name => filter | |
| 699 if filter is None, return the value unchanged | |
| 700 if filter is a callable, apply it | |
| 701 if filter is a dict, it can have following keys: | |
| 702 - filters: iterable of filters to apply | |
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703 - filters_args: kwargs of filters in the same order as filters (use empty |
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704 dict if needed) |
| 2402 | 705 - template: template to format where {value} is the filtered value |
| 706 """ | |
| 707 value = item.value | |
| 708 filter_ = filters.get(item.name, None) | |
| 709 if filter_ is None: | |
| 710 return value | |
| 711 elif isinstance(filter_, dict): | |
| 3028 | 712 filters_args = filter_.get("filters_args") |
| 713 for idx, f_name in enumerate(filter_.get("filters", [])): | |
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714 kwargs = filters_args[idx] if filters_args is not None else {} |
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715 filter_func = self.env.filters[f_name] |
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716 try: |
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717 eval_context_filter = filter_func.evalcontextfilter |
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718 except AttributeError: |
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719 eval_context_filter = False |
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720 |
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721 if eval_context_filter: |
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722 value = filter_func(ctx.eval_ctx, value, **kwargs) |
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723 else: |
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724 value = filter_func(value, **kwargs) |
| 3028 | 725 template = filter_.get("template") |
|
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Goffi <goffi@goffi.org>
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diff
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|
726 if template: |
|
5425cf18929b
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|
727 # format will return a string, so we need to check first |
|
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|
728 # if the value is safe or not, and re-mark it after formatting |
|
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|
729 is_safe = isinstance(value, safe) |
|
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|
730 value = template.format(value=value) |
|
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|
731 if is_safe: |
|
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|
732 value = safe(value) |
|
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|
733 return value |
| 2402 | 734 |
|
2391
07e1543d6992
template: new "adv_format" filter which use Python's format and return whole value if template is None
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|
735 def _adv_format(self, value, template, **kwargs): |
|
07e1543d6992
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|
736 """Advancer formatter |
|
07e1543d6992
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|
737 |
|
07e1543d6992
template: new "adv_format" filter which use Python's format and return whole value if template is None
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|
738 like format() method, but take care or special values like None |
|
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|
739 @param value(unicode): value to format |
|
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|
740 @param template(None, unicode): template to use with format() method. |
|
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|
741 It will be formatted using value=value and **kwargs |
|
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|
742 None to return value unchanged |
|
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|
743 @return (unicode): formatted value |
|
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|
744 """ |
|
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|
745 if template is None: |
|
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|
746 return value |
|
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|
747 # jinja use string when no special char is used, so we have to convert to unicode |
| 3028 | 748 return str(template).format(value=value, **kwargs) |
|
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|
749 |
|
2425
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template: added dict_ext filter to extend a dictionary
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|
750 def _dict_ext(self, source_dict, extra_dict, key=None): |
|
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|
751 """extend source_dict with extra dict and return the result |
|
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|
752 |
|
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|
753 @param source_dict(dict): dictionary to extend |
|
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|
754 @param extra_dict(dict, None): dictionary to use to extend first one |
|
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|
755 None to return source_dict unmodified |
|
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|
756 @param key(unicode, None): if specified extra_dict[key] will be used |
|
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|
757 if it doesn't exists, a copy of unmodified source_dict is returned |
|
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|
758 @return (dict): resulting dictionary |
|
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|
759 """ |
|
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changeset
|
760 if extra_dict is None: |
|
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|
761 return source_dict |
|
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|
762 if key is not None: |
|
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|
763 extra_dict = extra_dict.get(key, {}) |
|
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|
764 ret = source_dict.copy() |
|
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|
765 ret.update(extra_dict) |
|
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|
766 return ret |
|
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Goffi <goffi@goffi.org>
parents:
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changeset
|
767 |
|
2454
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
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|
768 def highlight(self, code, lexer_name=None, lexer_opts=None, html_fmt_opts=None): |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
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parents:
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changeset
|
769 """Do syntax highlighting on code |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
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changeset
|
770 |
|
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|
771 Under the hood, pygments is used, check its documentation for options possible |
|
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|
772 values. |
|
2454
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|
773 @param code(unicode): code or markup to highlight |
|
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core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
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|
774 @param lexer_name(unicode, None): name of the lexer to use |
|
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parents:
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|
775 None to autodetect it |
|
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core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
parents:
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changeset
|
776 @param html_fmt_opts(dict, None): kword arguments to use for HtmlFormatter |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
parents:
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changeset
|
777 @return (unicode): HTML markup with highlight classes |
|
06ff33052354
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Goffi <goffi@goffi.org>
parents:
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|
778 """ |
|
06ff33052354
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Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
779 if lexer_opts is None: |
|
06ff33052354
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Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
780 lexer_opts = {} |
|
06ff33052354
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parents:
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changeset
|
781 if html_fmt_opts is None: |
|
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parents:
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changeset
|
782 html_fmt_opts = {} |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
parents:
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changeset
|
783 if lexer_name is None: |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
784 lexer = lexers.guess_lexer(code, **lexer_opts) |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
parents:
2453
diff
changeset
|
785 else: |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
786 lexer = lexers.get_lexer_by_name(lexer_name, **lexer_opts) |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
787 formatter = formatters.HtmlFormatter(**html_fmt_opts) |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
788 return safe(pygments.highlight(code, lexer, formatter)) |
|
06ff33052354
core, template (filters): added pygments as a dependency + new highlight filter to use it.
Goffi <goffi@goffi.org>
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diff
changeset
|
789 |
|
2403
dec31114c402
template: improved date formatter:
Goffi <goffi@goffi.org>
parents:
2402
diff
changeset
|
790 ## custom tests ## |
|
dec31114c402
template: improved date formatter:
Goffi <goffi@goffi.org>
parents:
2402
diff
changeset
|
791 |
|
dec31114c402
template: improved date formatter:
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
792 def _in_the_past(self, timestamp): |
|
dec31114c402
template: improved date formatter:
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
793 """check if a date is in the past |
|
dec31114c402
template: improved date formatter:
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
794 |
|
dec31114c402
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parents:
2402
diff
changeset
|
795 @param timestamp(unicode, int): unix time |
|
dec31114c402
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Goffi <goffi@goffi.org>
parents:
2402
diff
changeset
|
796 @return (bool): True if date is in the past |
|
dec31114c402
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Goffi <goffi@goffi.org>
parents:
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|
797 """ |
|
dec31114c402
template: improved date formatter:
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
798 return time.time() > int(timestamp) |
|
dec31114c402
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Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
799 |
| 2515 | 800 ## template methods ## |
| 801 | |
| 802 def _icon_defs(self, *names): | |
|
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|
803 """Define svg icons which will be used in the template. |
|
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|
804 |
|
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|
805 Their name is used as id |
|
0fa217fafabf
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|
806 """ |
|
2624
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|
807 svg_elt = etree.Element( |
|
56f94936df1e
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parents:
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|
808 "svg", |
|
56f94936df1e
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Goffi <goffi@goffi.org>
parents:
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changeset
|
809 nsmap={None: "http://www.w3.org/2000/svg"}, |
|
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Goffi <goffi@goffi.org>
parents:
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|
810 width="0", |
|
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parents:
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changeset
|
811 height="0", |
|
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|
812 style="display: block", |
|
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parents:
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changeset
|
813 ) |
|
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parents:
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diff
changeset
|
814 defs_elt = etree.SubElement(svg_elt, "defs") |
| 2515 | 815 for name in names: |
| 3028 | 816 path = os.path.join(self.icons_path, name + ".svg") |
| 2515 | 817 icon_svg_elt = etree.parse(path).getroot() |
| 818 # we use icon name as id, so we can retrieve them easily | |
|
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|
819 icon_svg_elt.set("id", name) |
|
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|
820 if not icon_svg_elt.tag == "{http://www.w3.org/2000/svg}svg": |
| 3028 | 821 raise exceptions.DataError("invalid SVG element") |
| 2515 | 822 defs_elt.append(icon_svg_elt) |
|
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|
823 return safe(etree.tostring(svg_elt, encoding="unicode")) |
| 2515 | 824 |
|
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|
825 def _icon_use(self, name, cls=""): |
| 3028 | 826 return safe('<svg class="svg-icon{cls}" xmlns="http://www.w3.org/2000/svg" ' |
| 827 'viewBox="0 0 100 100">\n' | |
| 828 ' <use href="#{name}"/>' | |
| 829 '</svg>\n'.format(name=name, cls=(" " + cls) if cls else "")) | |
| 2515 | 830 |
|
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|
831 def render(self, template, site=None, theme=None, locale=C.DEFAULT_LOCALE, |
| 3028 | 832 media_path="", css_files=None, css_inline=False, **kwargs): |
|
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|
833 """Render a template |
|
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|
834 |
|
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|
835 @param template(unicode): template to render (e.g. blog/articles.html) |
|
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|
836 @param site(unicide): site name |
|
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|
837 None or empty string for defaut site (i.e. SàT templates) |
|
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|
838 @param theme(unicode): template theme |
|
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|
839 @param media_path(unicode): prefix of the SàT media path/URL to use for |
|
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|
840 template root. Must end with a u'/' |
|
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|
841 @param css_files(list[unicode],None): CSS files to used |
|
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|
842 CSS files must be in static dir of the template |
|
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|
843 use None for automatic selection of CSS files based on template category |
|
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|
844 None is recommended. General static/style.css and theme file name will be |
|
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|
845 used. |
|
2159
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846 @param css_inline(bool): if True, CSS will be embedded in the HTML page |
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847 @param **kwargs: variable to transmit to the template |
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848 """ |
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849 if not template: |
| 3028 | 850 raise ValueError("template can't be empty") |
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851 if site is not None or theme is not None: |
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852 # user wants to set site and/or theme, so we add it to the template path |
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853 if site is None: |
| 3028 | 854 site = '' |
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855 if theme is None: |
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856 theme = C.TEMPLATE_THEME_DEFAULT |
| 3028 | 857 if template[0] == "(": |
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858 raise ValueError( |
| 3028 | 859 "you can't specify site or theme in template path and in argument " |
| 860 "at the same time" | |
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861 ) |
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862 |
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863 template_data = TemplateData(site, theme, template) |
| 3028 | 864 template = "({site}/{theme}){template}".format( |
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865 site=site, theme=theme, template=template) |
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866 else: |
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867 template_data = self.env.loader.parse_template(template) |
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868 |
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869 # we need to save template_data in environment, to load right templates when they |
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870 # are referenced from other templates (e.g. import) |
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871 # FIXME: this trick will not work anymore if we use async templates (it works |
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872 # here because we know that the rendering will be blocking until we unset |
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873 # _template_data) |
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874 self.env._template_data = template_data |
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875 |
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876 template_source = self.env.get_template(template) |
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877 |
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878 if css_files is None: |
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879 css_files, css_files_noscript = self.getCSSFiles(template_data) |
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880 |
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881 kwargs["icon_defs"] = self._icon_defs |
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882 kwargs["icon"] = self._icon_use |
| 2515 | 883 |
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884 if css_inline: |
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885 css_contents = [] |
| 3028 | 886 for files, suffix in ((css_files, ""), |
| 887 (css_files_noscript, "_noscript")): | |
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888 site_root_dir = self.sites_paths[template_data.site] |
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889 for css_file in files: |
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890 css_file_path = os.path.join(site_root_dir, css_file) |
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891 with open(css_file_path) as f: |
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892 css_contents.append(f.read()) |
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893 if css_contents: |
| 3028 | 894 kwargs["css_content" + suffix] = "\n".join(css_contents) |
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895 |
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896 scripts_handler = ScriptsHandler(self, template_data) |
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897 self.setLocale(locale) |
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898 |
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899 # XXX: theme used in template arguments is the requested theme, which may differ |
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900 # from actual theme if the template doesn't exist in the requested theme. |
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901 rendered = template_source.render( |
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902 template_data=template_data, |
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903 media_path=media_path, |
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904 css_files=css_files, |
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905 css_files_noscript=css_files_noscript, |
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906 locale=self._locale, |
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907 locales=self.locales, |
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908 gidx=Indexer(), |
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909 script=scripts_handler, |
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910 **kwargs |
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911 ) |
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912 self.env._template_data = None |
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913 return rendered |