add

#!/usr/bin/python

# update-index.c:add_file_to_cache
import os
import subprocess
import sys

import index

filenames = subprocess.check_output(['find'] + sys.argv[1:] + ['!', '-type', 'd']).splitlines() # for directories
entries = index.read_index()
for filename in filenames:
    entries = [e for e in entries if e[0] != filename]
    if os.path.exists(filename):
        if os.path.islink(filename): # for symlinks
            mode = 0120000
            with open('.zit/blob.tmp', 'w') as f:
                f.write(os.readlink(filename))
            sha1 = subprocess.check_output(['hash-object', 'blob', '.zit/blob.tmp']).strip()
        else:
            if os.access(filename, os.X_OK): # for executable files
                mode = 0100755
            else:
                mode = 0100644
            sha1 = subprocess.check_output(['hash-object', 'blob', filename]).strip()
        entries.append((filename, mode, bytearray.fromhex(sha1)))
entries.sort()

index.write_index(entries)