#! /usr/bin/env python

"""\
usage: ttcompile [-hvbf] [-i input-TTF] scr [target]
       ttcompile [-hvbf] [-i input-TTF] src1 ... srcN directory

    Translate one or more TTX files (as output by ttdump) to a TrueType
    font file.

    Options:
    -h Help: print this message
    -i TrueType-input-file: specify a TT file to be merged with the TTX file.
       This option is only valid when at most one TTX file is specified.
    -b Don't recalc glyph boundig boxes: use the values in the TTX file as-is.
    -f Force overwriting existing files.
    -v Verbose: messages will be written to stdout about what is being done
"""

import sys, os, getopt
from fontTools import ttLib

def usage():
	print __doc__
	sys.exit(2)

def makeOutputFileName(xmlPath, outputDir):
	dir, file = os.path.split(xmlPath)
	file, ext = os.path.splitext(file)
	if outputDir:
		dir = outputDir
	return os.path.join(dir, file + ".ttf")

try:
	options, args = getopt.getopt(sys.argv[1:], "hvbfi:")
except getopt.GetoptError:
	usage()

# default values
verbose = 0
ttInFile = None
recalcBBoxes = 1
forceOverwrite = 0

for option, value in options:
	if option == "-i":
		ttInFile = value
	elif option == "-v":
		verbose = 1
	elif option == "-h":
		print __doc__
		sys.exit(0)
	elif option == "-b":
		recalcBBoxes = 0
	elif option == "-f":
		forceOverwrite = 1

if not args:
	usage()

if ttInFile and len(args) > 2:
	print "Must specify exactly one TTX source file when using -i"
	sys.exit(2)


nargs = len(args)
if nargs == 1:
	files = [(args[0], makeOutputFileName(args[0], None))]
elif nargs == 2:
	xmlPath = args[0]
	outPath = args[1]
	if os.path.isdir(outPath):
		outPath = makeOutputFileName(xmlPath, outPath)
	files = [(xmlPath, outPath)]
else:
	outputDir = args[-1]
	if not os.path.isdir(outputDir):
		print "last argument must be an existing directory"
		sys.exit(2)
	files = []
	for xmlPath in args[:-1]:
		files.append((xmlPath, makeOutputFileName(xmlPath, outputDir)))


for xmlPath, ttPath in files:
	if not forceOverwrite and os.path.exists(ttPath):
		answer = raw_input('Overwrite "%s"? ' % ttPath)
		if not answer[:1] in ("Y", "y"):
			print "skipped."
			continue
	
	print 'Compiling "%s" to "%s"...' % (xmlPath, ttPath)
	
	tt = ttLib.TTFont(ttInFile, recalcBBoxes=recalcBBoxes, verbose=verbose)
	tt.importXML(xmlPath)
	tt.save(ttPath)

	if verbose:
		import time
		print "%s finished at" % sys.argv[0], time.strftime("%H:%M:%S", time.localtime(time.time()))