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79 lines
2.9 KiB
Python
79 lines
2.9 KiB
Python
"""tarball
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Tool-specific initialization for tarball.
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"""
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## Commands to tackle a command based implementation:
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##to unpack on the fly...
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##gunzip < FILE.tar.gz | tar xvf -
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##to pack on the fly...
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##tar cvf - FILE-LIST | gzip -c > FILE.tar.gz
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import os.path
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import SCons.Builder
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import SCons.Node.FS
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import SCons.Util
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try:
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import gzip
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import tarfile
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internal_targz = 1
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except ImportError:
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internal_targz = 0
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TARGZ_DEFAULT_COMPRESSION_LEVEL = 9
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if internal_targz:
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def targz(target, source, env):
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def archive_name( path ):
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path = os.path.normpath( os.path.abspath( path ) )
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common_path = os.path.commonprefix( (base_dir, path) )
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archive_name = path[len(common_path):]
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return archive_name
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def visit(tar, dirname, names):
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for name in names:
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path = os.path.join(dirname, name)
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if os.path.isfile(path):
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tar.add(path, archive_name(path) )
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compression = env.get('TARGZ_COMPRESSION_LEVEL',TARGZ_DEFAULT_COMPRESSION_LEVEL)
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base_dir = os.path.normpath( env.get('TARGZ_BASEDIR', env.Dir('.')).abspath )
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target_path = str(target[0])
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fileobj = gzip.GzipFile( target_path, 'wb', compression )
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tar = tarfile.TarFile(os.path.splitext(target_path)[0], 'w', fileobj)
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for source in source:
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source_path = str(source)
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if source.isdir():
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os.path.walk(source_path, visit, tar)
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else:
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tar.add(source_path, archive_name(source_path) ) # filename, arcname
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tar.close()
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targzAction = SCons.Action.Action(targz, varlist=['TARGZ_COMPRESSION_LEVEL','TARGZ_BASEDIR'])
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def makeBuilder( emitter = None ):
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return SCons.Builder.Builder(action = SCons.Action.Action('$TARGZ_COM', '$TARGZ_COMSTR'),
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source_factory = SCons.Node.FS.Entry,
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source_scanner = SCons.Defaults.DirScanner,
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suffix = '$TARGZ_SUFFIX',
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multi = 1)
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TarGzBuilder = makeBuilder()
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def generate(env):
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"""Add Builders and construction variables for zip to an Environment.
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The following environnement variables may be set:
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TARGZ_COMPRESSION_LEVEL: integer, [0-9]. 0: no compression, 9: best compression (same as gzip compression level).
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TARGZ_BASEDIR: base-directory used to determine archive name (this allow archive name to be relative
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to something other than top-dir).
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"""
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env['BUILDERS']['TarGz'] = TarGzBuilder
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env['TARGZ_COM'] = targzAction
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env['TARGZ_COMPRESSION_LEVEL'] = TARGZ_DEFAULT_COMPRESSION_LEVEL # range 0-9
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env['TARGZ_SUFFIX'] = '.tar.gz'
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env['TARGZ_BASEDIR'] = env.Dir('.') # Sources archive name are made relative to that directory.
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def exists(env):
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return internal_targz
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