tracim/tg2env/bin/pilconvert.py

#!/home/daccorsi/sources/protos/pboard/tg2env/bin/python
#
# The Python Imaging Library.
# $Id$
#
# convert image files
#
# History:
# 0.1   96-04-20 fl     Created
# 0.2   96-10-04 fl     Use draft mode when converting images
# 0.3   96-12-30 fl     Optimize output (PNG, JPEG)
# 0.4   97-01-18 fl     Made optimize an option (PNG, JPEG)
# 0.5   98-12-30 fl     Fixed -f option (from Anthony Baxter)
#

import site
import getopt, string, sys

from PIL import Image

def usage():
    print "PIL Convert 0.5/1998-12-30 -- convert image files"
    print "Usage: pilconvert [option] infile outfile"
    print
    print "Options:"
    print
    print "  -c <format>  convert to format (default is given by extension)"
    print
    print "  -g           convert to greyscale"
    print "  -p           convert to palette image (using standard palette)"
    print "  -r           convert to rgb"
    print
    print "  -o           optimize output (trade speed for size)"
    print "  -q <value>   set compression quality (0-100, JPEG only)"
    print
    print "  -f           list supported file formats"
    sys.exit(1)

if len(sys.argv) == 1:
    usage()

try:
    opt, argv = getopt.getopt(sys.argv[1:], "c:dfgopq:r")
except getopt.error, v:
    print v
    sys.exit(1)

format = None
convert = None

options = { }

for o, a in opt:

    if o == "-f":
        Image.init()
        id = Image.ID[:]
        id.sort()
        print "Supported formats (* indicates output format):"
        for i in id:
            if Image.SAVE.has_key(i):
                print i+"*",
            else:
                print i,
        sys.exit(1)

    elif o == "-c":
        format = a

    if o == "-g":
        convert = "L"
    elif o == "-p":
        convert = "P"
    elif o == "-r":
        convert = "RGB"

    elif o == "-o":
        options["optimize"] = 1
    elif o == "-q":
        options["quality"] = string.atoi(a)

if len(argv) != 2:
    usage()

try:
    im = Image.open(argv[0])
    if convert and im.mode != convert:
        im.draft(convert, im.size)
        im = im.convert(convert)
    if format:
        apply(im.save, (argv[1], format), options)
    else:
        apply(im.save, (argv[1],), options)
except:
    print "cannot convert image",
    print "(%s:%s)" % (sys.exc_type, sys.exc_value)