hashplit.py

#!/usr/bin/env python

# Hashplit 2010-04-14: Split a file into separate files using
# directives of the form # file <filename>

import re
import sys

if len(sys.argv) != 2:
    exit("""hashplit: Split a file into sub-files
Usage: hashplit <file>
Identify the start of each subfile inside <file> with a line of the form:
# file <subfile>
""")
in_filename = sys.argv[1]

print("hashplit is reading "+ in_filename)

in_file = open(in_filename, "r")

filename = False
files = {}
for line in in_file:
    match = re.match("# file (?P<filename>.*)", line)
    if match:
        filename = match.group("filename")
    if filename:
        if filename not in files:
            files[filename] = ""
        files[filename] += line

for filename in files:
    print("hashplit is writing "+ filename)
    out_file = open(filename, "w")
    out_file.write(files[filename])
    out_file.close()