font-awesome-to-png.py

#!/usr/bin/env python

#
# font-awesome-to-png.py
#
# Exports Font Awesome icons as PNG images.
#
# Copyright (c) 2012-2014 Michal Wojciechowski (http://odyniec.net/)
#
# Font Awesome - http://fortawesome.github.com/Font-Awesome
#

if __name__ != '__main__':
    exit(0);

import sys, argparse
from os import path, access, R_OK
from uchr import u, uchr
from export_icon import export_icon
from export_iconmap import export_iconmap
# Mapping of icon names to character codes
from icons import icons

class ListAction(argparse.Action):
    def __call__(self, parser, namespace, values, option_string=None):
        for icon in sorted(icons.keys()):
            print(icon)
        exit(0)


class ListUpdateAction(argparse.Action):
    def __call__(self, parser, namespace, values, option_string=None):
        print("icons = {")
        for icon in sorted(icons.keys()):
            print(u'    "%s": u("\\u%x"),' % (icon, ord(icons[icon])))
        print("}")
        exit(0)

class LoadCSSAction(argparse.Action):
    def __call__(self, parser, namespace, values, option_string=None):
        global icons
        icons = export_iconmap(values, namespace.prefix)

parser = argparse.ArgumentParser(
        description="Exports Font Awesome icons as PNG images.")

parser.add_argument("icon", type=str, nargs="+",
        help="The name(s) of the icon(s) to export (or \"ALL\" for all icons)")
parser.add_argument("--color", type=str, default="black",
        help="Color (HTML color code or name, default: black)")
parser.add_argument("--filename", type=str,
        help="The name of the output file (it must end with \".png\"). If " +
        "all files are exported, it is used as a prefix.")
parser.add_argument("--font", type=str, default="fontawesome-webfont.ttf",
        help="Font file to use (default: fontawesome-webfont.ttf)")
parser.add_argument("--prefix", type=str, default="fa-", help="CSS prefix")
parser.add_argument("--css", type=str, default="", action=LoadCSSAction,
        help="Path to the CSS file defining icon names (instead of the " +
        "predefined list)")
parser.add_argument("--list", nargs=0, action=ListAction,
        help="List available icon names and exit")
parser.add_argument("--list-update", nargs=0, action=ListUpdateAction,
        help=argparse.SUPPRESS)
parser.add_argument("--size", type=int, default=16,
        help="Icon size in pixels (default: 16)")

args = parser.parse_args()
prefix = args.prefix
icon = args.icon
size = args.size
font = args.font
color = args.color

if args.font:
    if not path.isfile(args.font) or not access(args.font, R_OK):
        print >> sys.stderr, ("Error: Font file (%s) can't be opened"
                % (args.font))
        exit(1)

if args.icon == [ "ALL" ]:
    # Export all icons
    selected_icons = sorted(icons.keys())
else:
    selected_icons = []

    # Icon name was given
    for icon in args.icon:
        # Strip the "icon-" prefix, if present
        if icon.startswith("icon-"):
            icon = icon[5:]

        if icon in icons:
            selected_icons.append(icon)
        else:
            print >> sys.stderr, "Error: Unknown icon name (%s)" % (icon)
            sys.exit(1)

for icon in selected_icons:
    if len(selected_icons) > 1:
        # Exporting multiple icons -- treat the filename option as name prefix
        filename = (args.filename or "") + icon + ".png"
    else:
        # Exporting one icon
        if args.filename:
            filename = args.filename
        else:
            filename = icon + ".png"

    print("Exporting icon \"%s\" as %s (%ix%i pixels)" %
            (icon, filename, size, size))

    export_icon(icons, icon, size, filename, font, color)