3 Helper code for file writing with optional compression.
5 @contact: Debian FTPMaster <ftpmaster@debian.org>
6 @copyright: 2011 Torsten Werner <twerner@debian.org>
7 @license: GNU General Public License version 2 or later
10 ################################################################################
12 # This program is free software; you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation; either version 2 of the License, or
15 # (at your option) any later version.
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 # GNU General Public License for more details.
22 # You should have received a copy of the GNU General Public License
23 # along with this program; if not, write to the Free Software
24 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 ################################################################################
28 from daklib.config import Config
30 from subprocess import check_call
34 class BaseFileWriter(object):
36 Base class for compressed and uncompressed file writing.
38 def __init__(self, template, **keywords):
40 The template argument is a string template like
41 "dists/%(suite)s/%(component)s/Contents-%(architecture)s.gz" that
42 should be relative to the archive's root directory. The keywords
43 include strings for suite, component, architecture and booleans
44 uncompressed, gzip, bzip2.
46 compression = keywords.get('compression', ['none'])
47 self.uncompressed = 'none' in compression
48 self.gzip = 'gzip' in compression
49 self.bzip2 = 'bzip2' in compression
50 self.xz = 'xz' in compression
51 root_dir = Config()['Dir::Root']
52 relative_dir = template % keywords
53 self.path = os.path.join(root_dir, relative_dir)
57 Returns a file object for writing.
59 # create missing directories
61 os.makedirs(os.path.dirname(self.path))
64 self.file = open(self.path + '.new', 'w')
67 # internal helper function
68 def rename(self, filename):
69 tempfilename = filename + '.new'
70 os.chmod(tempfilename, 0o664)
71 os.rename(tempfilename, filename)
75 Closes the file object and does the compression and rename work.
79 check_call('gzip -9cn --rsyncable <%s.new >%s.gz.new' % (self.path, self.path),
81 self.rename('%s.gz' % self.path)
83 check_call('bzip2 -9 <%s.new >%s.bz2.new' % (self.path, self.path), shell = True)
84 self.rename('%s.bz2' % self.path)
86 check_call('xz -c <{0}.new >{0}.xz.new'.format(self.path), shell=True)
87 self.rename('{0}.xz'.format(self.path))
89 self.rename(self.path)
91 os.unlink(self.path + '.new')
93 class BinaryContentsFileWriter(BaseFileWriter):
94 def __init__(self, **keywords):
96 The value of the keywords suite, component, and architecture are
97 strings. The value of component may be omitted if not applicable.
98 Output files are gzip compressed only.
101 'compression': ['gzip'],
103 flags.update(keywords)
104 if flags['debtype'] == 'deb':
105 template = "dists/%(suite)s/%(component)s/Contents-%(architecture)s"
107 template = "dists/%(suite)s/%(component)s/Contents-udeb-%(architecture)s"
108 BaseFileWriter.__init__(self, template, **flags)
110 class SourceContentsFileWriter(BaseFileWriter):
111 def __init__(self, **keywords):
113 The value of the keywords suite and component are strings.
114 Output files are gzip compressed only.
117 'compression': ['gzip'],
119 flags.update(keywords)
120 template = "dists/%(suite)s/%(component)s/Contents-source"
121 BaseFileWriter.__init__(self, template, **flags)
123 class PackagesFileWriter(BaseFileWriter):
124 def __init__(self, **keywords):
126 The value of the keywords suite, component, debtype and architecture
127 are strings. Output files are gzip compressed only.
130 'compression': ['gzip', 'bzip2'],
132 flags.update(keywords)
133 if flags['debtype'] == 'deb':
134 template = "dists/%(suite)s/%(component)s/binary-%(architecture)s/Packages"
136 template = "dists/%(suite)s/%(component)s/debian-installer/binary-%(architecture)s/Packages"
137 BaseFileWriter.__init__(self, template, **flags)
139 class SourcesFileWriter(BaseFileWriter):
140 def __init__(self, **keywords):
142 The value of the keywords suite and component are strings. Output
143 files are gzip compressed only.
146 'compression': ['gzip', 'bzip2'],
148 flags.update(keywords)
149 template = "dists/%(suite)s/%(component)s/source/Sources"
150 BaseFileWriter.__init__(self, template, **flags)
152 class TranslationFileWriter(BaseFileWriter):
153 def __init__(self, **keywords):
155 The value of the keywords suite, component and language are strings.
156 Output files are bzip2 compressed only.
159 'compression': ['bzip2'],
162 flags.update(keywords)
163 template = "dists/%(suite)s/%(component)s/i18n/Translation-%(language)s"
164 super(TranslationFileWriter, self).__init__(template, **flags)