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annotate frontends/src/jp/output_template.py @ 2248:a81261cee29b

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jp (output/template): initialize template rendered only if a rendering is actually needed
author Goffi <goffi@goffi.org>
date Sun, 21 May 2017 15:52:23 +0200
parents 4ec72927a222
children 18d71226b3a8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #! /usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # jp: a SàT command line tool
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5 # Copyright (C) 2009-2016 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 """Standard outputs"""
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20
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21
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22 from sat_frontends.jp.constants import Const as C
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23 from sat.core.i18n import _
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24 from sat.tools.common import template
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25 import webbrowser
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26 import tempfile
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27 import os.path
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28
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29 __outputs__ = ["Template"]
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30 TEMPLATE = u'template'
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31 OPTIONS = {u'template', u'browser', u'inline-css'}
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32
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33
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34 class Template(object):
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35 """outputs data using SàT templates"""
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36
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37 def __init__(self, jp):
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38 self.host = jp
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39 jp.register_output(C.OUTPUT_COMPLEX, TEMPLATE, self.render)
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40
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41 def render(self, data):
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42 """render output data using requested template
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43
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44 template to render the data can be either command's TEMPLATE or
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45 template output_option requested by user.
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46 @param data(dict): data is a dict which map from variable name to use in template
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47 to the variable itself.
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48 command's template_data_mapping attribute will be used if it exists to convert
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49 data to a dict usable by the template.
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50 """
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51 self.renderer = template.Renderer(self.host)
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52 cmd = self.host.command
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53 options = self.host.parse_output_options()
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54 self.host.check_output_options(OPTIONS, options)
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55 try:
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56 template_path = cmd.TEMPLATE
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57 except AttributeError:
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58 if not 'template' in cmd.args.output_opts:
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59 self.host.disp(u'no default template set for this command, '
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60 u'you need to specify a template using --oo template=[path/to/template.html',
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61 error=True)
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62 self.host.quit(C.EXIT_BAD_ARG)
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63 try:
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64 template_path = options['template']
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65 except KeyError:
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66 # template is not specified, we use default one
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67 pass
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68 if template_path is None:
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69 self.host.disp(u"Can't parse template, please check its syntax",
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70 error=True)
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71 self.host.quit(C.EXIT_BAD_ARG)
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72
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73 try:
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74 mapping_cb = cmd.template_data_mapping
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75 except AttributeError:
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76 kwargs = data
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77 else:
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78 kwargs = mapping_cb(data)
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79
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80 css_inline = u'inline-css' in options
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81 rendered = self.renderer.render(template_path, css_inline=css_inline, **kwargs)
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82
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83 if 'browser' in options:
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84 template_name = os.path.basename(template_path)
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85 tmp_dir = tempfile.mkdtemp()
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86 self.host.disp(_(u"Browser opening requested.\nTemporary files are put in the following directory, "
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87 u"you'll have to delete it yourself once finished viewing: {}").format(tmp_dir))
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88 tmp_file = os.path.join(tmp_dir, template_name)
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89 with open(tmp_file, 'w') as f:
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90 f.write(rendered.encode('utf-8'))
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91 theme, theme_root_path = self.renderer.getThemeAndRoot(template_path)
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92 static_dir = os.path.join(theme_root_path, C.TEMPLATE_STATIC_DIR)
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93 if os.path.exists(static_dir):
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94 import shutil
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95 shutil.copytree(static_dir, os.path.join(tmp_dir, theme, C.TEMPLATE_STATIC_DIR))
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96 webbrowser.open(tmp_file)
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97 else:
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98 self.host.disp(rendered)