author | Nishanth Amuluru <nishanth@fossee.in> |
Sat, 08 Jan 2011 11:20:57 +0530 | |
changeset 69 | c6bca38c1cbf |
permissions | -rw-r--r-- |
69
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# darcs.py - darcs support for the convert extension |
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# |
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# Copyright 2007-2009 Matt Mackall <mpm@selenic.com> and others |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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|
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from common import NoRepo, checktool, commandline, commit, converter_source |
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from mercurial.i18n import _ |
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from mercurial import encoding, util |
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import os, shutil, tempfile, re |
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|
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# The naming drift of ElementTree is fun! |
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|
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try: |
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from xml.etree.cElementTree import ElementTree, XMLParser |
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except ImportError: |
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try: |
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from xml.etree.ElementTree import ElementTree, XMLParser |
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except ImportError: |
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try: |
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from elementtree.cElementTree import ElementTree, XMLParser |
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except ImportError: |
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try: |
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from elementtree.ElementTree import ElementTree, XMLParser |
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except ImportError: |
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ElementTree = None |
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class darcs_source(converter_source, commandline): |
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def __init__(self, ui, path, rev=None): |
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converter_source.__init__(self, ui, path, rev=rev) |
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commandline.__init__(self, ui, 'darcs') |
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# check for _darcs, ElementTree so that we can easily skip |
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# test-convert-darcs if ElementTree is not around |
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if not os.path.exists(os.path.join(path, '_darcs')): |
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raise NoRepo(_("%s does not look like a darcs repository") % path) |
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checktool('darcs') |
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version = self.run0('--version').splitlines()[0].strip() |
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if version < '2.1': |
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raise util.Abort(_('darcs version 2.1 or newer needed (found %r)') % |
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version) |
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if ElementTree is None: |
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raise util.Abort(_("Python ElementTree module is not available")) |
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self.path = os.path.realpath(path) |
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self.lastrev = None |
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self.changes = {} |
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self.parents = {} |
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self.tags = {} |
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# Check darcs repository format |
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format = self.format() |
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if format: |
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if format in ('darcs-1.0', 'hashed'): |
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raise NoRepo(_("%s repository format is unsupported, " |
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"please upgrade") % format) |
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else: |
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self.ui.warn(_('failed to detect repository format!')) |
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def before(self): |
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self.tmppath = tempfile.mkdtemp( |
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prefix='convert-' + os.path.basename(self.path) + '-') |
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output, status = self.run('init', repodir=self.tmppath) |
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self.checkexit(status) |
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tree = self.xml('changes', xml_output=True, summary=True, |
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repodir=self.path) |
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tagname = None |
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child = None |
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for elt in tree.findall('patch'): |
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node = elt.get('hash') |
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name = elt.findtext('name', '') |
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if name.startswith('TAG '): |
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tagname = name[4:].strip() |
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elif tagname is not None: |
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self.tags[tagname] = node |
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tagname = None |
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self.changes[node] = elt |
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self.parents[child] = [node] |
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child = node |
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self.parents[child] = [] |
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def after(self): |
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self.ui.debug('cleaning up %s\n' % self.tmppath) |
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shutil.rmtree(self.tmppath, ignore_errors=True) |
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def recode(self, s, encoding=None): |
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if isinstance(s, unicode): |
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# XMLParser returns unicode objects for anything it can't |
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# encode into ASCII. We convert them back to str to get |
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# recode's normal conversion behavior. |
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s = s.encode('latin-1') |
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return super(darcs_source, self).recode(s, encoding) |
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|
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def xml(self, cmd, **kwargs): |
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# NOTE: darcs is currently encoding agnostic and will print |
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# patch metadata byte-for-byte, even in the XML changelog. |
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etree = ElementTree() |
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# While we are decoding the XML as latin-1 to be as liberal as |
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# possible, etree will still raise an exception if any |
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# non-printable characters are in the XML changelog. |
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parser = XMLParser(encoding='latin-1') |
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fp = self._run(cmd, **kwargs) |
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etree.parse(fp, parser=parser) |
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self.checkexit(fp.close()) |
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return etree.getroot() |
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|
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def format(self): |
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output, status = self.run('show', 'repo', no_files=True, |
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repodir=self.path) |
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self.checkexit(status) |
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116 |
m = re.search(r'^\s*Format:\s*(.*)$', output, re.MULTILINE) |
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117 |
if not m: |
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118 |
return None |
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119 |
return ','.join(sorted(f.strip() for f in m.group(1).split(','))) |
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120 |
|
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121 |
def manifest(self): |
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122 |
man = [] |
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123 |
output, status = self.run('show', 'files', no_directories=True, |
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124 |
repodir=self.tmppath) |
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125 |
self.checkexit(status) |
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126 |
for line in output.split('\n'): |
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127 |
path = line[2:] |
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128 |
if path: |
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129 |
man.append(path) |
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130 |
return man |
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131 |
|
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132 |
def getheads(self): |
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133 |
return self.parents[None] |
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134 |
|
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135 |
def getcommit(self, rev): |
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136 |
elt = self.changes[rev] |
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137 |
date = util.strdate(elt.get('local_date'), '%a %b %d %H:%M:%S %Z %Y') |
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138 |
desc = elt.findtext('name') + '\n' + elt.findtext('comment', '') |
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139 |
# etree can return unicode objects for name, comment, and author, |
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140 |
# so recode() is used to ensure str objects are emitted. |
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141 |
return commit(author=self.recode(elt.get('author')), |
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142 |
date=util.datestr(date), |
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143 |
desc=self.recode(desc).strip(), |
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144 |
parents=self.parents[rev]) |
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145 |
|
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146 |
def pull(self, rev): |
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147 |
output, status = self.run('pull', self.path, all=True, |
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148 |
match='hash %s' % rev, |
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149 |
no_test=True, no_posthook=True, |
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150 |
external_merge='/bin/false', |
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151 |
repodir=self.tmppath) |
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152 |
if status: |
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153 |
if output.find('We have conflicts in') == -1: |
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154 |
self.checkexit(status, output) |
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155 |
output, status = self.run('revert', all=True, repodir=self.tmppath) |
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156 |
self.checkexit(status, output) |
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157 |
|
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158 |
def getchanges(self, rev): |
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159 |
copies = {} |
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160 |
changes = [] |
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161 |
man = None |
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162 |
for elt in self.changes[rev].find('summary').getchildren(): |
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163 |
if elt.tag in ('add_directory', 'remove_directory'): |
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|
164 |
continue |
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165 |
if elt.tag == 'move': |
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166 |
if man is None: |
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|
167 |
man = self.manifest() |
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168 |
source, dest = elt.get('from'), elt.get('to') |
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169 |
if source in man: |
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|
170 |
# File move |
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|
171 |
changes.append((source, rev)) |
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|
172 |
changes.append((dest, rev)) |
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|
173 |
copies[dest] = source |
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|
174 |
else: |
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|
175 |
# Directory move, deduce file moves from manifest |
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|
176 |
source = source + '/' |
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|
177 |
for f in man: |
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|
178 |
if not f.startswith(source): |
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|
179 |
continue |
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|
180 |
fdest = dest + '/' + f[len(source):] |
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|
181 |
changes.append((f, rev)) |
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|
182 |
changes.append((fdest, rev)) |
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|
183 |
copies[fdest] = f |
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|
184 |
else: |
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|
185 |
changes.append((elt.text.strip(), rev)) |
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|
186 |
self.pull(rev) |
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|
187 |
self.lastrev = rev |
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|
188 |
return sorted(changes), copies |
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|
189 |
|
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|
190 |
def getfile(self, name, rev): |
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|
191 |
if rev != self.lastrev: |
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|
192 |
raise util.Abort(_('internal calling inconsistency')) |
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|
193 |
path = os.path.join(self.tmppath, name) |
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|
194 |
data = open(path, 'rb').read() |
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|
195 |
mode = os.lstat(path).st_mode |
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|
196 |
mode = (mode & 0111) and 'x' or '' |
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|
197 |
return data, mode |
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|
198 |
|
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|
199 |
def gettags(self): |
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|
200 |
return self.tags |