diff options
Diffstat (limited to 'Lib/uu.py')
| -rwxr-xr-x | Lib/uu.py | 110 |
1 files changed, 57 insertions, 53 deletions
@@ -92,66 +92,70 @@ def decode(in_file, out_file=None, mode=None, quiet=False): # # Open the input file, if needed. # + opened_files = [] if in_file == '-': in_file = sys.stdin.buffer elif isinstance(in_file, str): in_file = open(in_file, 'rb') - # - # Read until a begin is encountered or we've exhausted the file - # - while True: - hdr = in_file.readline() - if not hdr: - raise Error('No valid begin line found in input file') - if not hdr.startswith(b'begin'): - continue - hdrfields = hdr.split(b' ', 2) - if len(hdrfields) == 3 and hdrfields[0] == b'begin': + opened_files.append(in_file) + + try: + # + # Read until a begin is encountered or we've exhausted the file + # + while True: + hdr = in_file.readline() + if not hdr: + raise Error('No valid begin line found in input file') + if not hdr.startswith(b'begin'): + continue + hdrfields = hdr.split(b' ', 2) + if len(hdrfields) == 3 and hdrfields[0] == b'begin': + try: + int(hdrfields[1], 8) + break + except ValueError: + pass + if out_file is None: + # If the filename isn't ASCII, what's up with that?!? + out_file = hdrfields[2].rstrip(b' \t\r\n\f').decode("ascii") + if os.path.exists(out_file): + raise Error('Cannot overwrite existing file: %s' % out_file) + if mode is None: + mode = int(hdrfields[1], 8) + # + # Open the output file + # + if out_file == '-': + out_file = sys.stdout.buffer + elif isinstance(out_file, str): + fp = open(out_file, 'wb') try: - int(hdrfields[1], 8) - break - except ValueError: + os.path.chmod(out_file, mode) + except AttributeError: pass - if out_file is None: - # If the filename isn't ASCII, what's up with that?!? - out_file = hdrfields[2].rstrip(b' \t\r\n\f').decode("ascii") - if os.path.exists(out_file): - raise Error('Cannot overwrite existing file: %s' % out_file) - if mode is None: - mode = int(hdrfields[1], 8) - # - # Open the output file - # - opened = False - if out_file == '-': - out_file = sys.stdout.buffer - elif isinstance(out_file, str): - fp = open(out_file, 'wb') - try: - os.path.chmod(out_file, mode) - except AttributeError: - pass - out_file = fp - opened = True - # - # Main decoding loop - # - s = in_file.readline() - while s and s.strip(b' \t\r\n\f') != b'end': - try: - data = binascii.a2b_uu(s) - except binascii.Error as v: - # Workaround for broken uuencoders by /Fredrik Lundh - nbytes = (((s[0]-32) & 63) * 4 + 5) // 3 - data = binascii.a2b_uu(s[:nbytes]) - if not quiet: - sys.stderr.write("Warning: %s\n" % v) - out_file.write(data) + out_file = fp + opened_files.append(out_file) + # + # Main decoding loop + # s = in_file.readline() - if not s: - raise Error('Truncated input file') - if opened: - out_file.close() + while s and s.strip(b' \t\r\n\f') != b'end': + try: + data = binascii.a2b_uu(s) + except binascii.Error as v: + # Workaround for broken uuencoders by /Fredrik Lundh + nbytes = (((s[0]-32) & 63) * 4 + 5) // 3 + data = binascii.a2b_uu(s[:nbytes]) + if not quiet: + sys.stderr.write("Warning: %s\n" % v) + out_file.write(data) + s = in_file.readline() + if not s: + raise Error('Truncated input file') + finally: + for f in opened_files: + f.close() def test(): """uuencode/uudecode main program""" |