mirror of https://github.com/python/cpython
72 lines
1.6 KiB
Python
72 lines
1.6 KiB
Python
|
# Extract files from a SHAR archive.
|
||
|
|
# Run this on the Mac.
|
||
|
|
# Usage:
|
||
|
|
# >>> import unshar
|
||
|
|
# >>> f = open('SHAR')
|
||
|
|
# >>> unshar.unshar(f)
|
||
|
|
|
||
|
|
import string
|
||
|
|
|
||
|
|
def unshar(fp, verbose=0, overwrite=0):
|
||
|
|
ofp = None
|
||
|
|
file = None
|
||
|
|
while 1:
|
||
|
|
line = fp.readline()
|
||
|
|
if verbose > 3: print 'Got:', `line`
|
||
|
|
if line[:1] == 'X':
|
||
|
|
# Most common case first
|
||
|
|
if ofp: ofp.write(line[1:])
|
||
|
|
continue
|
||
|
|
if not line:
|
||
|
|
if verbose: print 'EOF'
|
||
|
|
if ofp:
|
||
|
|
print 'Unterminated file -- closing'
|
||
|
|
ofp.close()
|
||
|
|
ofp = None
|
||
|
|
break
|
||
|
|
if line[0] == '#':
|
||
|
|
if verbose: print line,
|
||
|
|
continue
|
||
|
|
if line[:14] == 'sed "s/^X//" >':
|
||
|
|
if verbose: print "!!!", `line`
|
||
|
|
i = string.find(line, "'")
|
||
|
|
j = string.find(line, "'", i+1)
|
||
|
|
if i >= 0 and j > i:
|
||
|
|
file = line[i+1:j]
|
||
|
|
if '/' in file:
|
||
|
|
words = string.splitfields(file, '/')
|
||
|
|
for funny in '', '.':
|
||
|
|
while funny in words: words.remove(funny)
|
||
|
|
for i in range(len(words)):
|
||
|
|
if words[i] == '..': words[i] = ''
|
||
|
|
words.insert(0, '')
|
||
|
|
file = string.joinfields(words, ':')
|
||
|
|
try:
|
||
|
|
ofp = open(file, 'r')
|
||
|
|
ofp.close()
|
||
|
|
ofp = None
|
||
|
|
over = 1
|
||
|
|
except IOError:
|
||
|
|
over = 0
|
||
|
|
if over and not overwrite:
|
||
|
|
print 'Skipping', file, '(already exists) ...'
|
||
|
|
continue
|
||
|
|
ofp = open(file, 'w')
|
||
|
|
if over:
|
||
|
|
print 'Overwriting', file, '...'
|
||
|
|
else:
|
||
|
|
print 'Writing', file, '...'
|
||
|
|
continue
|
||
|
|
if line == 'END_OF_FILE\n':
|
||
|
|
if not file:
|
||
|
|
print 'Unexpected END_OF_FILE marker'
|
||
|
|
if ofp:
|
||
|
|
print 'done'
|
||
|
|
ofp.close()
|
||
|
|
ofp = None
|
||
|
|
else:
|
||
|
|
print 'done skipping'
|
||
|
|
file = None
|
||
|
|
continue
|
||
|
|
if verbose: print "...", `line`
|