#!/usr/bin/python
# -*- coding: UTF-8 -*-
#    MIT License
#
#    Copyright (c) 2018-2020, Alexey Dynda
#
#    Permission is hereby granted, free of charge, to any person obtaining a copy
#    of this software and associated documentation files (the "Software"), to deal
#    in the Software without restriction, including without limitation the rights
#    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#    copies of the Software, and to permit persons to whom the Software is
#    furnished to do so, subject to the following conditions:
#
#    The above copyright notice and this permission notice shall be included in all
#    copies or substantial portions of the Software.
#
#    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#    SOFTWARE.
#
###################################################################################
# Linux:
#     Fixing pip
#     curl https://bootstrap.pypa.io/get-pip.py | python2
#     sudo pip install freetype-py
# Win32:
#     pip install freetype_py-2.0.0.post6-py2.py3-none-win32.whl
#
# Get fonts
# wget https://ftp.gnu.org/gnu/freefont/freefont-ttf-20120503.zip

import re
import sys
import codecs
from modules import glcdsource
from modules import fontgenerator

def print_help_and_exit():
    print("Usage: ttf_fonts.py [args] > outputFile")
    print("args:")
    print("      --ttf S   use ttf name as source")
    print("      --glcd S  use glcd file as as source")
    print("      -s <N>    font size (this is not pixels!) ")
    print("      -SB <N>   limit size in pixels to value (pixels will be cut)")
    print("      -fh       fixed height")
    print("      -fw       fixed width")
    print("      -g <S> <E> add chars group to the font")
    print("                where <S> - first char hex or binary code, or char symbol")
    print("                      <E> - chars count minus 1 (integer), or char symbol")
    print("      -f old    old format 1.7.6 and below")
    print("      -f new    new format 1.7.8 and above")
    print("      -d        Print demo text to console")
    print("      -t text   Use text as demo text")
    print("      --demo-only Prints demo text to console and exits")
    print("Examples:")
    print("   [convert ttf font to old format]")
    print("      ttf_fonts.py --ttf FreeSans.ttf -s 8 -f old > font.h")
    print("   [convert ttf font to new format with demo text and print to console]")
    print("      ttf_fonts.py --ttf FreeSans.ttf -d -f new")
    print("   [convert GLCD font generated file to new format]")
    print("      ttf_fonts.py --glcd font.c -f new > font.h")
    exit(1)

if len(sys.argv) < 2:
    print_help_and_exit()

fsize = 8
fold = False
flimit_bottom = 0
fwidth = False
fheight = False
fname = ""
fgroups = []
TTF = False
GLCD = False
demo_text = False
demo_text_ = "World!q01"
generate_font = True
source = None

# parse args
idx = 1
while idx < len(sys.argv):
    opt = sys.argv[idx]
    if opt == "--ttf":
        TTF = True
        idx += 1
        fname = sys.argv[idx]
    elif opt == "--glcd":
        GLCD = True
        idx += 1
        fname = sys.argv[idx]
    elif opt == "-s":
        idx += 1
        fsize = int(sys.argv[idx])
    elif opt == "-SB":
        idx +=1
        flimit_bottom = int(sys.argv[idx])
    elif opt == "-fh":
        fheight = True
    elif opt == "-fw":
        fwidth = True
    elif opt == "-f":
        idx += 1
        if sys.argv[idx] == "old":
            fold = True
    elif opt == "-g":
        idx += 1
        _start_char = sys.argv[idx]
        if re.search(r'0x\d*', _start_char) is not None:
            code = int(_start_char, 16)
            _start_char = unichr(code)
        elif _start_char.isdigit() and len(_start_char) > 1:
            if sys.version_info < (3, 0):
                _start_char = unichr(int(_start_char))
            else:
                _start_char = chr(int(_start_char))
        else:
            if sys.version_info < (3, 0):
                _start_char = _start_char.decode("utf-8")
        idx += 1
        _end_char = sys.argv[idx]
        if _end_char.isdigit():
            if sys.version_info < (3, 0):
                _end_char = unichr(ord(_start_char) + int(_end_char))
            else:
                _end_char = chr(ord(_start_char) + int(_end_char))
        else:
            if sys.version_info < (3, 0):
                _end_char = _end_char.decode("utf-8")
        fgroups.append( (_start_char, _end_char ) )
    elif opt == "-d":
        demo_text = True
    elif opt == "-t":
        idx += 1
        demo_text_ = sys.argv[idx]
    elif opt == "--demo-only":
        generate_font = False
        demo_text = True
    else:
        print("Unknown option: {0}".format(opt))
        print_help_and_exit()
    idx += 1

if TTF:
    from modules import ttfsource
    source = ttfsource.TTFSource(fname, fsize)
    if len(fgroups) == 0:
        fgroups.append((' ', unichr(127)))
    for g in fgroups:
        source.add_chars(g[0], g[1])

if GLCD:
    source = glcdsource.GLCDSource(fname, fsize, "utf8")

if source is None:
    print_help_and_exit()

if fwidth:
    source.expand_chars_h()
if fheight:
    source.expand_chars_v()
if flimit_bottom > 0:
    source.deflate_chars_bottom( flimit_bottom )

font = fontgenerator.Generator( source )
if fold:
    source.expand_chars()
    if demo_text:
        if sys.version_info < (3, 0):
            source.printString(demo_text_.decode("utf-8"))
        else:
            source.printString(demo_text_)
    if generate_font:
        font.generate_fixed_old()
else:
    if demo_text:
        if sys.version_info < (3, 0):
            source.printString(demo_text_.decode("utf-8"))
        else:
            source.printString(demo_text_)
    if generate_font:
        font.generate_new_format()