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Viewing changes to bzrlib/_readdir_pyx.pyx

  • Committer: Andrew Bennetts
  • Date: 2010-01-15 03:58:20 UTC
  • mfrom: (4963 +trunk)
  • mto: (4973.1.1 integration)
  • mto: This revision was merged to the branch mainline in revision 4975.
  • Revision ID: andrew.bennetts@canonical.com-20100115035820-ilb3t36swgzq6v1l
Merge lp:bzr.

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bzrlib/_readdir_pyx.pyx
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cdef extern from 'Python.h':
 
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    int PyErr_CheckSignals() except -1
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    char * PyString_AS_STRING(object)
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    ctypedef int Py_ssize_t # Required for older pyrex versions
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    ctypedef struct PyObject:
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        return result
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cdef raise_os_error(int errnum, char *msg_prefix, path):
 
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    if errnum == EINTR:
 
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        PyErr_CheckSignals()
 
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    raise OSError(errnum, msg_prefix + strerror(errnum), path)
 
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cdef _read_dir(path):
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    """Like os.listdir, this reads the contents of a directory.
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        # passing full paths every time.
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        orig_dir_fd = open(".", O_RDONLY, 0)
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        if orig_dir_fd == -1:
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            raise OSError(errno, "open: " + strerror(errno), ".")
 
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            raise_os_error(errno, "open: ", ".")
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        if -1 == chdir(path):
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            raise OSError(errno, "chdir: " + strerror(errno), path)
 
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            raise_os_error(errno, "chdir: ", path)
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    else:
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        orig_dir_fd = -1
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    try:
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        the_dir = opendir(".")
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        if NULL == the_dir:
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            raise OSError(errno, "opendir: " + strerror(errno), path)
 
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            raise_os_error(errno, "opendir: ", path)
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        try:
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            result = []
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            entry = &sentinel
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                    errno = 0
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                    entry = readdir(the_dir)
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                    if entry == NULL and (errno == EAGAIN or errno == EINTR):
 
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                        if errno == EINTR:
 
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                            PyErr_CheckSignals()
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                        # try again
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                        continue
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                    else:
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                        # we consider ENOTDIR to be 'no error'.
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                        continue
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                    else:
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                        raise OSError(errno, "readdir: " + strerror(errno), path)
 
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                        raise_os_error(errno, "readdir: ", path)
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                name = entry.d_name
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                if not (name[0] == c"." and (
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                    (name[1] == 0) or 
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                    stat_result = lstat(entry.d_name, &statvalue._st)
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                    if stat_result != 0:
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                        if errno != ENOENT:
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                            raise OSError(errno, "lstat: " + strerror(errno),
 
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                            raise_os_error(errno, "lstat: ",
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                                path + "/" + entry.d_name)
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                        else:
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                            # the file seems to have disappeared after being
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                        statvalue, None))
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        finally:
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            if -1 == closedir(the_dir):
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                raise OSError(errno, "closedir: " + strerror(errno), path)
 
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                raise_os_error(errno, "closedir: ", path)
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    finally:
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        if -1 != orig_dir_fd:
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            failed = False
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                # try to close the original directory anyhow
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                failed = True
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            if -1 == close(orig_dir_fd) or failed:
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                raise OSError(errno, "return to orig_dir: " + strerror(errno))
 
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                raise_os_error(errno, "return to orig_dir: ", "")
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    return result
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