iframe-proxy | Sunbelt Computer Software

History

248 lines (202 loc) · 7.93 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

"""distutils.archive_util

Utility functions for creating archive files (tarballs, zip files,

that sort of thing)."""

import os

from warnings import warn

import sys

try:

import zipfile

except ImportError:

zipfile = None

from distutils.errors import DistutilsExecError

from distutils.spawn import spawn

from distutils.dir_util import mkpath

from distutils import log

try:

from pwd import getpwnam

except ImportError:

getpwnam = None

try:

from grp import getgrnam

except ImportError:

getgrnam = None

def _get_gid(name):

"""Returns a gid, given a group name."""

if getgrnam is None or name is None:

return None

try:

result = getgrnam(name)

except KeyError:

result = None

if result is not None:

return result[2]

return None

def _get_uid(name):

"""Returns an uid, given a user name."""

if getpwnam is None or name is None:

return None

try:

result = getpwnam(name)

except KeyError:

result = None

if result is not None:

return result[2]

return None

def make_tarball(base_name, base_dir, compress="gzip", verbose=0, dry_run=0,

owner=None, group=None):

"""Create a (possibly compressed) tar file from all the files under

'base_dir'.

'compress' must be "gzip" (the default), "bzip2", "xz", "compress", or

None. ("compress" will be deprecated in Python 3.2)

'owner' and 'group' can be used to define an owner and a group for the

archive that is being built. If not provided, the current owner and group

will be used.

The output tar file will be named 'base_dir' + ".tar", possibly plus

the appropriate compression extension (".gz", ".bz2", ".xz" or ".Z").

Returns the output filename.

"""

tar_compression = {'gzip': 'gz', 'bzip2': 'bz2', 'xz': 'xz', None: '',

'compress': ''}

compress_ext = {'gzip': '.gz', 'bzip2': '.bz2', 'xz': '.xz',

'compress': '.Z'}

# flags for compression program, each element of list will be an argument

if compress is not None and compress not in compress_ext.keys():

raise ValueError(

"bad value for 'compress': must be None, 'gzip', 'bzip2', "

"'xz' or 'compress'")

archive_name = base_name + '.tar'

if compress != 'compress':

archive_name += compress_ext.get(compress, '')

mkpath(os.path.dirname(archive_name), dry_run=dry_run)

# creating the tarball

import tarfile # late import so Python build itself doesn't break

log.info('Creating tar archive')

uid = _get_uid(owner)

gid = _get_gid(group)

def _set_uid_gid(tarinfo):

if gid is not None:

tarinfo.gid = gid

tarinfo.gname = group

if uid is not None:

tarinfo.uid = uid

tarinfo.uname = owner

return tarinfo

if not dry_run:

tar = tarfile.open(archive_name, 'w|%s' % tar_compression[compress])

try:

tar.add(base_dir, filter=_set_uid_gid)

finally:

tar.close()

# compression using `compress`

if compress == 'compress':

warn("'compress' will be deprecated.", PendingDeprecationWarning)

# the option varies depending on the platform

compressed_name = archive_name + compress_ext[compress]

if sys.platform == 'win32':

cmd = [compress, archive_name, compressed_name]

else:

cmd = [compress, '-f', archive_name]

spawn(cmd, dry_run=dry_run)

return compressed_name

return archive_name

def make_zipfile(base_name, base_dir, verbose=0, dry_run=0):

"""Create a zip file from all the files under 'base_dir'.

The output zip file will be named 'base_name' + ".zip". Uses either the

"zipfile" Python module (if available) or the InfoZIP "zip" utility

(if installed and found on the default search path). If neither tool is

available, raises DistutilsExecError. Returns the name of the output zip

file.

"""

zip_filename = base_name + ".zip"

mkpath(os.path.dirname(zip_filename), dry_run=dry_run)

# If zipfile module is not available, try spawning an external

# 'zip' command.

if zipfile is None:

if verbose:

zipoptions = "-r"

else:

zipoptions = "-rq"

try:

spawn(["zip", zipoptions, zip_filename, base_dir],

dry_run=dry_run)

except DistutilsExecError:

# XXX really should distinguish between "couldn't find

# external 'zip' command" and "zip failed".

raise DistutilsExecError(("unable to create zip file '%s': "

"could neither import the 'zipfile' module nor "

"find a standalone zip utility") % zip_filename)

else:

log.info("creating '%s' and adding '%s' to it",

zip_filename, base_dir)

if not dry_run:

try:

zip = zipfile.ZipFile(zip_filename, "w",

compression=zipfile.ZIP_DEFLATED)

except RuntimeError:

zip = zipfile.ZipFile(zip_filename, "w",

compression=zipfile.ZIP_STORED)

for dirpath, dirnames, filenames in os.walk(base_dir):

for name in filenames:

path = os.path.normpath(os.path.join(dirpath, name))

if os.path.isfile(path):

zip.write(path, path)

log.info("adding '%s'" % path)

zip.close()

return zip_filename

ARCHIVE_FORMATS = {

'gztar': (make_tarball, [('compress', 'gzip')], "gzip'ed tar-file"),

'bztar': (make_tarball, [('compress', 'bzip2')], "bzip2'ed tar-file"),

'xztar': (make_tarball, [('compress', 'xz')], "xz'ed tar-file"),

'ztar': (make_tarball, [('compress', 'compress')], "compressed tar file"),

'tar': (make_tarball, [('compress', None)], "uncompressed tar file"),

'zip': (make_zipfile, [],"ZIP file")

}

def check_archive_formats(formats):

"""Returns the first format from the 'format' list that is unknown.

If all formats are known, returns None

"""

for format in formats:

if format not in ARCHIVE_FORMATS:

return format

return None

def make_archive(base_name, format, root_dir=None, base_dir=None, verbose=0,

dry_run=0, owner=None, group=None):

"""Create an archive file (eg. zip or tar).

'base_name' is the name of the file to create, minus any format-specific

extension; 'format' is the archive format: one of "zip", "tar", "gztar",

"bztar", "xztar", or "ztar".

'root_dir' is a directory that will be the root directory of the

archive; ie. we typically chdir into 'root_dir' before creating the

archive. 'base_dir' is the directory where we start archiving from;

ie. 'base_dir' will be the common prefix of all files and

directories in the archive. 'root_dir' and 'base_dir' both default

to the current directory. Returns the name of the archive file.

'owner' and 'group' are used when creating a tar archive. By default,

uses the current owner and group.

"""

save_cwd = os.getcwd()

if root_dir is not None:

log.debug("changing into '%s'", root_dir)

base_name = os.path.abspath(base_name)

if not dry_run:

os.chdir(root_dir)

if base_dir is None:

base_dir = os.curdir

kwargs = {'dry_run': dry_run}

try:

format_info = ARCHIVE_FORMATS[format]

except KeyError:

raise ValueError("unknown archive format '%s'" % format)

func = format_info[0]

for arg, val in format_info[1]:

kwargs[arg] = val

if format != 'zip':

kwargs['owner'] = owner

kwargs['group'] = group

try:

filename = func(base_name, base_dir, **kwargs)

finally:

if root_dir is not None:

log.debug("changing back to '%s'", save_cwd)

os.chdir(save_cwd)

return filename

Sunbelt Computer Software

PL/B Language Development and Support

Navigation Menu

Uh oh!

Uh oh!

Sunbelt Computer Software

PL/B Language Development and Support

Uh oh!

Uh oh!

FilesExpand file tree

archive_util.py

Latest commit

History

archive_util.py

File metadata and controls