libervia-backend: src/tools/common/template.py annotate

annotate src/tools/common/template.py @ 2236:4b1873ce6b61

jp (event): event handling commands, first draft

author	Goffi <goffi@goffi.org>
date	Thu, 27 Apr 2017 01:02:05 +0200
parents	f472179305a1
children	e09048cb7595

rev	line source
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	1 #!/usr/bin/env python2
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	2 # -- coding: utf-8 --
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	3
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	4 # SAT: a jabber client
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	5 # Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org)
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	6
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	7 # This program is free software: you can redistribute it and/or modify
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	8 # it under the terms of the GNU Affero General Public License as published by
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	9 # the Free Software Foundation, either version 3 of the License, or
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	10 # (at your option) any later version.
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	11
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	12 # This program is distributed in the hope that it will be useful,
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	15 # GNU Affero General Public License for more details.
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	16
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	17 # You should have received a copy of the GNU Affero General Public License
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	19
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	20 """ template generation """
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	21
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	22 from sat.core.constants import Const as C
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	23 from sat.core import exceptions
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	24 from sat.core.log import getLogger
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	25 log = getLogger(__name__)
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	26 import os.path
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	27 try:
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	28 import sat_templates
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	29 except ImportError:
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	30 raise exceptions.MissingModule(u'sat_templates module is not available, please install it or check your path to use template engine')
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	31 else:
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	32 sat_templates # to avoid pyflakes warning
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	33
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	34 try:
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	35 import jinja2
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	36 except:
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	37 raise exceptions.MissingModule(u'Missing module jinja2, please install it from http://jinja.pocoo.org or with pip install jinja2')
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	38
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	39 HTML_EXT = ('html', 'xhtml')
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	40 # TODO: handle external path (an additional search path for templates should be settable by user
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	41 # TODO: handle absolute URL (should be used for trusted use cases) only (e.g. jp) for security reason
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	42
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	43
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	44 class TemplateLoader(jinja2.FileSystemLoader):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	45
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	46 def __init__(self):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	47 searchpath = os.path.dirname(sat_templates.__file__)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	48 super(TemplateLoader, self).__init__(searchpath, followlinks=True)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	49
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	50 def parse_template(self, template):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	51 """parse template path and return theme and relative URL
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	52
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	53 @param template_path(unicode): path to template with parenthesis syntax
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	54 @return (tuple[(unicode,None),unicode]): theme and template_path
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	55 theme can be None if relative path is used
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	56 relative path is the path from search path with theme specified
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	57 e.g. default/blog/articles.html
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	58 """
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	59 if template.startswith(u'('):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	60 try:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	61 theme_end = template.index(u')')
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	62 except IndexError:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	63 raise ValueError(u"incorrect theme in template")
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	64 theme = template[1:theme_end]
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	65 template = template[theme_end+1:]
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	66 if not template or template.startswith(u'/'):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	67 raise ValueError(u"incorrect path after template name")
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	68 template = os.path.join(theme, template)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	69 elif template.startswith(u'/'):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	70 # absolute path means no template
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	71 theme = None
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	72 raise NotImplementedError(u'absolute path is not implemented yet')
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	73 else:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	74 theme = C.TEMPLATE_THEME_DEFAULT
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	75 template = os.path.join(theme, template)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	76 return theme, template
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	77
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	78 def get_default_template(self, theme, template_path):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	79 """return default template path
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	80
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	81 @param theme(unicode): theme used
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	82 @param template_path(unicode): path to the not found template
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	83 @return (unicode, None): default path or None if there is not
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	84 """
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	85 ext = os.path.splitext(template_path)[1][1:]
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	86 path_elems = template_path.split(u'/')
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	87 if ext in HTML_EXT:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	88 if path_elems[1] == u'error':
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	89 # if an inexisting error page is requested, we return base page
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	90 default_path = os.path.join(theme, u'error/base.html')
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	91 return default_path
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	92 if theme != C.TEMPLATE_THEME_DEFAULT:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	93 # if template doesn't exists for this theme, we try with default
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	94 return os.path.join(C.TEMPLATE_THEME_DEFAULT, path_elems[1:])
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	95
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	96 def get_source(self, environment, template):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	97 """relative path to template dir, with special theme handling
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	98
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	99 if the path is just relative, "default" theme is used.
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	100 The theme can be specified in parenthesis just before the path
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	101 e.g.: (some_theme)path/to/template.html
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	102 """
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	103 theme, template_path = self.parse_template(template)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	104 try:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	105 return super(TemplateLoader, self).get_source(environment, template_path)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	106 except jinja2.exceptions.TemplateNotFound as e:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	107 # in some special cases, a defaut template is returned if nothing is found
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	108 if theme is not None:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	109 default_path = self.get_default_template(theme, template_path)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	110 if default_path is not None:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	111 return super(TemplateLoader, self).get_source(environment, default_path)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	112 # if no default template is found, we re-raise the error
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	113 raise e
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	114
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	115
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	116 class Renderer(object):
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	117
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	118 def __init__(self, host):
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	119 self.host = host
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	120 self.base_dir = os.path.dirname(sat_templates.__file__) # FIXME: should be modified if we handle use extra dirs
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	121 self.env = jinja2.Environment(
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	122 loader=TemplateLoader(),
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	123 autoescape=jinja2.select_autoescape(['html', 'xhtml', 'xml']),
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	124 trim_blocks=True,
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	125 lstrip_blocks=True,
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	126 )
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	127 # we want to have access to SàT constants in templates
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	128 self.env.globals[u'C'] = C
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	129
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	130 def getThemeAndRoot(self, template):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	131 """retrieve theme and root dir of a given tempalte
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	132
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	133 @param template(unicode): template to parse
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	134 @return (tuple[unicode, unicode]): theme and absolute path to theme's root dir
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	135 """
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	136 theme, dummy = self.env.loader.parse_template(template)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	137 return theme, os.path.join(self.base_dir, theme)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	138
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	139 def _appendCSSIfExists(self, css_files, template_root_dir, theme, name, is_default):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	140 """append CSS file to list if it exists, else try with default theme
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	141
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	142 CSS file will be looked at [theme]/static/[name].css, and then default
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	143 if not found.
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	144 @param css_files(list): list of CSS file to be completed
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	145 @param template_root_dir(unicode): absolute path to template root used
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	146 @param theme(unicode): name of the template theme used
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	147 @param name(unicode): name of the CSS file to look for
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	148 @param is_default(bool): True if theme is the default theme
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	149 """
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	150 css_path = os.path.join(theme, C.TEMPLATE_STATIC_DIR, name + '.css')
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	151 if os.path.exists(os.path.join(template_root_dir, css_path)):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	152 css_files.append(css_path)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	153 elif not is_default:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	154 css_path = os.path.join(C.TEMPLATE_THEME_DEFAULT, C.TEMPLATE_STATIC_DIR, name + '.css')
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	155 if os.path.exists(os.path.join(template_root_dir, css_path)):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	156 css_files.append(css_path)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	157
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	158 def getCSSFiles(self, template_path, template_root_dir):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	159 """retrieve CSS files to use according to theme and template path
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	160
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	161 for each element of the path, a .css file is looked for in /static, and returned if it exists.
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	162 previous element are kept by replacing '/' with '_', and styles.css is always returned.
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	163 For instance, if template_path is some_theme/blog/articles.html:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	164 some_theme/static/styles.css is returned if it exists else default/static/styles.css
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	165 some_theme/static/blog.css is returned if it exists else default/static/blog.css (if it exists too)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	166 some_theme/static/blog_articles.css is returned if it exists else default/static/blog_articles.css (if it exists too)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	167 @param template_path(unicode): relative path to template file (e.g. some_theme/blog/articles.html)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	168 @param template_root_dir(unicode): absolute path of the theme root dir used
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	169 @return list[unicode]: relative path to CSS files to use
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	170 """
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	171 # TODO: some caching would be nice
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	172 css_files = []
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	173 path_elems = template_path.split(u'/')
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	174 theme = path_elems.pop(0)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	175 is_default = theme == C.TEMPLATE_THEME_DEFAULT
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	176 self._appendCSSIfExists(css_files, template_root_dir, theme, u'styles', is_default)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	177
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	178 for idx, path in enumerate(path_elems):
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	179 self._appendCSSIfExists(css_files, template_root_dir, theme, u'_'.join(path_elems[:idx+1]), is_default)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	180
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	181 return css_files
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	182
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	183 def render(self, template, theme=None, root_path=u'', css_files=None, css_inline=False, **kwargs):
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	184 """render a template
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	185
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	186 @param template(unicode): template to render (e.g. blog/articles.html)
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	187 @param theme(unicode): template theme
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	188 @param root_path(unicode): prefix of the path/URL to use for template root
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	189 must end with a u'/'
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	190 @param css_files(list[unicode],None): CSS files to used
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	191 CSS files must be in static dir of the template
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	192 use None for automatic selection of CSS files based on template category
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	193 None is recommended. General static/style.css and theme file name will be used.
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	194 @param css_inline(bool): if True, CSS will be embedded in the HTML page
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	195 @param **kwargs: variable to transmit to the template
5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	196 """
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	197 if not template:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	198 raise ValueError(u"template can't be empty")
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	199 if theme is not None:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	200 # use want to set a theme, we add it to the template path
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	201 if template[0] == u'(':
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	202 raise ValueError(u"you can't specify theme in template path and in argument at the same time")
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	203 elif template[0] == u'/':
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	204 raise ValueError(u"you can't specify theme with absolute paths")
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	205 template= u'(' + theme + u')' + template
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	206 else:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	207 theme, dummy = self.env.loader.parse_template(template)
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	208
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	209 template_source = self.env.get_template(template)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	210 template_root_dir = os.path.normpath(self.base_dir) # FIXME: should be modified if we handle use extra dirs
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	211 # XXX: template_path may have a different theme as first element than theme if a default page is used
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	212 template_path = template_source.filename[len(template_root_dir)+1:]
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	213
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	214 if css_files is None:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	215 css_files = self.getCSSFiles(template_path, template_root_dir)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	216
2159 5734b0994cf0 core (tools/common): template renderer first draft: Goffi <goffi@goffi.org> parents: diff changeset	217 if css_inline:
2169 f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	218 css_contents = []
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	219 for css_file in css_files:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	220 css_file_path = os.path.join(template_root_dir, css_file)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	221 with open(css_file_path) as f:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	222 css_contents.append(f.read())
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	223 if css_contents:
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	224 kwargs['css_content'] = '\n'.join(css_contents)
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	225 # XXX: theme used in template arguments is the requested theme, which may differ from actual theme
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	226 # if the template doesn't exist in the requested theme.
f472179305a1 tools(templates): workflow improvments: Goffi <goffi@goffi.org> parents: 2159 diff changeset	227 return template_source.render(theme=theme, root_path=root_path, css_files=css_files, **kwargs)

Mercurial > libervia-backend

annotate src/tools/common/template.py @ 2236:4b1873ce6b61