cleaned distutils.file_util
This commit is contained in:
Tarek Ziadé
parent
eea9d0d846
commit
9ad7bbc637
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@ -16,43 +16,42 @@ _copy_action = { None: 'copying',
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def _copy_file_contents(src, dst, buffer_size=16*1024):
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"""Copy the file 'src' to 'dst'; both must be filenames. Any error
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opening either file, reading from 'src', or writing to 'dst', raises
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DistutilsFileError. Data is read/written in chunks of 'buffer_size'
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bytes (default 16k). No attempt is made to handle anything apart from
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regular files.
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"""Copy the file 'src' to 'dst'.
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Both must be filenames. Any error opening either file, reading from
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'src', or writing to 'dst', raises DistutilsFileError. Data is
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read/written in chunks of 'buffer_size' bytes (default 16k). No attempt
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is made to handle anything apart from regular files.
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"""
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# Stolen from shutil module in the standard library, but with
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# custom error-handling added.
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fsrc = None
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fdst = None
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try:
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try:
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fsrc = open(src, 'rb')
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except os.error, (errno, errstr):
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raise DistutilsFileError, \
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"could not open '%s': %s" % (src, errstr)
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raise DistutilsFileError("could not open '%s': %s" % (src, errstr))
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if os.path.exists(dst):
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try:
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os.unlink(dst)
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except os.error, (errno, errstr):
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raise DistutilsFileError, \
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"could not delete '%s': %s" % (dst, errstr)
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raise DistutilsFileError(
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"could not delete '%s': %s" % (dst, errstr))
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try:
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fdst = open(dst, 'wb')
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except os.error, (errno, errstr):
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raise DistutilsFileError, \
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"could not create '%s': %s" % (dst, errstr)
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raise DistutilsFileError(
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"could not create '%s': %s" % (dst, errstr))
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while 1:
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try:
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buf = fsrc.read(buffer_size)
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except os.error, (errno, errstr):
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raise DistutilsFileError, \
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"could not read from '%s': %s" % (src, errstr)
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raise DistutilsFileError(
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"could not read from '%s': %s" % (src, errstr))
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if not buf:
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break
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@ -60,8 +59,8 @@ def _copy_file_contents (src, dst, buffer_size=16*1024):
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try:
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fdst.write(buf)
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except os.error, (errno, errstr):
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raise DistutilsFileError, \
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"could not write to '%s': %s" % (dst, errstr)
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raise DistutilsFileError(
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"could not write to '%s': %s" % (dst, errstr))
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finally:
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if fdst:
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@ -69,25 +68,18 @@ def _copy_file_contents (src, dst, buffer_size=16*1024):
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if fsrc:
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fsrc.close()
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# _copy_file_contents()
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def copy_file(src, dst, preserve_mode=1, preserve_times=1, update=0,
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link=None, verbose=1, dry_run=0):
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"""Copy a file 'src' to 'dst'.
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def copy_file (src, dst,
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preserve_mode=1,
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preserve_times=1,
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update=0,
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link=None,
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verbose=1,
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dry_run=0):
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"""Copy a file 'src' to 'dst'. If 'dst' is a directory, then 'src' is
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copied there with the same name; otherwise, it must be a filename. (If
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the file exists, it will be ruthlessly clobbered.) If 'preserve_mode'
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is true (the default), the file's mode (type and permission bits, or
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whatever is analogous on the current platform) is copied. If
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'preserve_times' is true (the default), the last-modified and
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last-access times are copied as well. If 'update' is true, 'src' will
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only be copied if 'dst' does not exist, or if 'dst' does exist but is
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older than 'src'.
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If 'dst' is a directory, then 'src' is copied there with the same name;
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otherwise, it must be a filename. (If the file exists, it will be
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ruthlessly clobbered.) If 'preserve_mode' is true (the default),
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the file's mode (type and permission bits, or whatever is analogous on
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the current platform) is copied. If 'preserve_times' is true (the
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default), the last-modified and last-access times are copied as well.
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If 'update' is true, 'src' will only be copied if 'dst' does not exist,
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or if 'dst' does exist but is older than 'src'.
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'link' allows you to make hard links (os.link) or symbolic links
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(os.symlink) instead of copying: set it to "hard" or "sym"; if it is
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@ -113,8 +105,8 @@ def copy_file (src, dst,
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from stat import ST_ATIME, ST_MTIME, ST_MODE, S_IMODE
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if not os.path.isfile(src):
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raise DistutilsFileError, \
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"can't copy '%s': doesn't exist or not a regular file" % src
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raise DistutilsFileError(
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"can't copy '%s': doesn't exist or not a regular file" % src)
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if os.path.isdir(dst):
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dir = dst
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@ -130,8 +122,7 @@ def copy_file (src, dst,
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try:
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action = _copy_action[link]
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except KeyError:
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raise ValueError, \
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"invalid value '%s' for 'link' argument" % link
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raise ValueError("invalid value '%s' for 'link' argument" % link)
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if verbose >= 1:
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if os.path.basename(dst) == os.path.basename(src):
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@ -148,8 +139,8 @@ def copy_file (src, dst,
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try:
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macostools.copy(src, dst, 0, preserve_times)
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except os.error, exc:
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raise DistutilsFileError, \
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"could not copy '%s' to '%s': %s" % (src, dst, exc[-1])
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raise DistutilsFileError(
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"could not copy '%s' to '%s': %s" % (src, dst, exc[-1]))
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# If linking (hard or symbolic), use the appropriate system call
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# (Unix only, of course, but that's the caller's responsibility)
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@ -176,17 +167,13 @@ def copy_file (src, dst,
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return (dst, 1)
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# copy_file ()
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# XXX I suspect this is Unix-specific -- need porting help!
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def move_file (src, dst,
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verbose=1,
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dry_run=0):
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def move_file (src, dst, verbose=1, dry_run=0):
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"""Move a file 'src' to 'dst'.
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"""Move a file 'src' to 'dst'. If 'dst' is a directory, the file will
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be moved into it with the same name; otherwise, 'src' is just renamed
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to 'dst'. Return the new full name of the file.
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If 'dst' is a directory, the file will be moved into it with the same
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name; otherwise, 'src' is just renamed to 'dst'. Return the new
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full name of the file.
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Handles cross-device moves on Unix using 'copy_file()'. What about
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other systems???
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@ -201,20 +188,19 @@ def move_file (src, dst,
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return dst
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if not isfile(src):
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raise DistutilsFileError, \
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"can't move '%s': not a regular file" % src
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raise DistutilsFileError("can't move '%s': not a regular file" % src)
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if isdir(dst):
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dst = os.path.join(dst, basename(src))
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elif exists(dst):
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raise DistutilsFileError, \
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"can't move '%s': destination '%s' already exists" % \
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(src, dst)
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raise DistutilsFileError(
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"can't move '%s': destination '%s' already exists" %
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(src, dst))
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if not isdir(dirname(dst)):
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raise DistutilsFileError, \
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raise DistutilsFileError(
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"can't move '%s': destination '%s' not a valid path" % \
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(src, dst)
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(src, dst))
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copy_it = 0
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try:
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@ -223,8 +209,8 @@ def move_file (src, dst,
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if num == errno.EXDEV:
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copy_it = 1
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else:
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raise DistutilsFileError, \
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"couldn't move '%s' to '%s': %s" % (src, dst, msg)
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raise DistutilsFileError(
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"couldn't move '%s' to '%s': %s" % (src, dst, msg))
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if copy_it:
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copy_file(src, dst, verbose=verbose)
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@ -235,15 +221,12 @@ def move_file (src, dst,
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os.unlink(dst)
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except os.error:
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pass
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raise DistutilsFileError, \
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raise DistutilsFileError(
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("couldn't move '%s' to '%s' by copy/delete: " +
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"delete '%s' failed: %s") % \
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(src, dst, src, msg)
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"delete '%s' failed: %s") %
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(src, dst, src, msg))
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return dst
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# move_file ()
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def write_file (filename, contents):
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"""Create a file with the specified name and write 'contents' (a
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