toilet/tools/caca2tlf.c

338 lines
8.8 KiB
C

/*
* caca2tlf Create a TOIlet font from a libcaca font
* Copyright (c) 2006 Sam Hocevar <sam@hocevar.net>
* All Rights Reserved
*
* $Id$
*
* This program is free software. It comes without any warranty, to
* the extent permitted by applicable law. You can redistribute it
* and/or modify it under the terms of the Do What The Fuck You Want
* To Public License, Version 2, as published by Sam Hocevar. See
* http://sam.zoy.org/wtfpl/COPYING for more details.
*/
/*
* This is the main program entry point.
*/
#include "config.h"
#if defined(HAVE_INTTYPES_H)
# include <inttypes.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <caca.h>
enum mode { GRAY, HALFBLOCKS, QUARTERBLOCKS } mode;
enum charset { SPACES, ASCII, UTF8 } charset;
static void list_fonts(void);
static void add_char(unsigned long int);
caca_font_t *f;
caca_canvas_t *out, *onechar;
uint32_t const *blocks;
uint8_t * image;
unsigned int w, h, gw, fgw, gh, iw, ih;
int main(int argc, char *argv[])
{
char *flag1, *flag2;
unsigned int b, i;
if(argc < 2)
{
fprintf(stderr,
"Usage: %s [--half|--quarter] [--spaces|--ascii|--utf8] <font>\n",
argv[0]);
list_fonts();
return -1;
}
if((!strcmp(argv[1], "--half") || !strcmp(argv[1], "-h")) && argc > 2)
{
flag1 = "--half ";
mode = HALFBLOCKS;
argv++; argc--;
}
else if((!strcmp(argv[1], "--quarter") || !strcmp(argv[1], "-q")) && argc > 2)
{
flag1 = "--quarter ";
mode = QUARTERBLOCKS;
argv++; argc--;
}
else
{
flag1 = "";
mode = GRAY;
}
if((!strcmp(argv[1], "--spaces") || !strcmp(argv[1], "-s")) && argc > 2)
{
flag2 = "--spaces ";
charset = SPACES;
argv++; argc--;
}
else if((!strcmp(argv[1], "--ascii") || !strcmp(argv[1], "-a")) && argc > 2)
{
flag2 = "--ascii ";
charset = ASCII;
argv++; argc--;
}
else if((!strcmp(argv[1], "--utf8") || !strcmp(argv[1], "-u")) && argc > 2)
{
flag2 = "--utf8 ";
charset = UTF8;
argv++; argc--;
}
else
{
flag2 = "";
charset = ASCII;
}
f = caca_load_font(argv[1], 0);
if(!f)
{
fprintf(stderr, "Font \"%s\" not found.\n", argv[1]);
list_fonts();
return -2;
}
w = caca_get_font_width(f);
h = caca_get_font_height(f);
iw = w * 2 + 1;
ih = h + 1;
switch(mode)
{
case GRAY:
gw = w;
fgw = w * 2;
gh = h;
break;
case HALFBLOCKS:
gw = w;
fgw = w * 2;
gh = (h + 1) / 2;
break;
case QUARTERBLOCKS:
gw = (w + 1) / 2;
fgw = (w * 2 + 1) / 2;
gh = (h + 1) / 2;
break;
}
blocks = caca_get_font_blocks(f);
onechar = caca_create_canvas(0, 0);
caca_set_color_ansi(onechar, CACA_WHITE, CACA_BLACK);
image = malloc(4 * iw * ih);
out = caca_create_canvas(0, 0);
printf("tlf2a$ %u %u %u -1 4 0 0 0\n", gh, gh - 1, fgw + 2);
printf("=============================================="
"==================================\n");
printf(" This font was automatically generated using:\n");
printf(" %% caca2tlf %s%s\"%s\"\n", flag1, flag2, argv[1]);
printf("=============================================="
"==================================\n");
for(i = 32; i < 127; i++)
add_char(i);
add_char(196);
add_char(214);
add_char(220);
add_char(228);
add_char(246);
add_char(252);
add_char(223);
for(b = 0, i = 0; blocks[i + 1]; i += 2)
{
int j, n = (int)(blocks[i + 1] - blocks[i]);
for(j = 0; j < n; j++)
{
char buf[7];
unsigned int len;
unsigned long int ch = blocks[i] + j;
if(ch <= 127 || ch == 196 || ch == 214 || ch == 220
|| ch == 228 || ch == 246 || ch == 252 || ch == 223)
continue;
len = caca_utf32_to_utf8(buf, ch);
buf[len] = '\0';
printf("0x%.04lX %s\n", ch, buf);
add_char(ch);
}
}
caca_free_canvas(out);
caca_free_canvas(onechar);
free(image);
caca_free_font(f);
return 0;
}
static void list_fonts(void)
{
char const * const * fonts;
unsigned int i;
fprintf(stderr, "Available fonts:\n");
fonts = caca_get_font_list();
for(i = 0; fonts[i]; i++)
fprintf(stderr, " \"%s\"\n", fonts[i]);
}
static void add_char(unsigned long int ch)
{
static char const * chars[][16] =
{
{ "_", "_", "_", "_", " " },
{ " ", "_", "_", "_" },
{ " ", "_", "_", "_", "_", "_", "_", "_",
"_", "_", "_", "_", "_", "_", "_", "_" },
{ "#", "$", ":", ".", " " },
{ " ", "\"", "m", "#" },
{ " ", "`", "'", "\"", ",", "[", "/", "P",
".", "\\", "]", "T", "m", "b", "d", "W" },
{ "", "", "", "", " " },
{ " ", "", "", "" },
{ " ", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "" }
};
static uint8_t fgs[][4] =
{
{ CACA_DEFAULT, CACA_DARKGRAY, CACA_LIGHTGRAY, CACA_WHITE },
{ CACA_DEFAULT, CACA_DEFAULT, CACA_DEFAULT, CACA_DEFAULT },
};
static uint8_t bgs[][4] =
{
{ CACA_DEFAULT, CACA_DARKGRAY, CACA_LIGHTGRAY, CACA_WHITE },
{ CACA_DEFAULT, CACA_DEFAULT, CACA_DEFAULT, CACA_DEFAULT },
};
char const **str;
void *buf;
size_t len;
unsigned int x, y, myw, mygw;
int coff = 0, aoff = 0;
int full = caca_utf32_is_fullwidth(ch);
caca_set_canvas_size(onechar, full ? 2 : 1, 1);
caca_put_char(onechar, 0, 0, ch);
caca_render_canvas(onechar, f, image, iw, ih, 4 * iw);
myw = full ? 2 * w : w;
mygw = full ? fgw : gw;
caca_set_canvas_size(out, (full ? fgw : gw) + 2, gh);
caca_clear_canvas(out);
switch(charset)
{
case SPACES:
coff = 0; aoff = 0;
break;
case ASCII:
coff = 3; aoff = 1;
break;
case UTF8:
coff = 6; aoff = 1;
break;
}
switch(mode)
{
case GRAY:
str = chars[coff];
for(y = 0; y < h; y++)
for(x = 0; x < myw; x++)
{
uint8_t c = image[4 * (x + y * iw) + 2];
if(c >= 0xc0)
{
caca_set_color_ansi(out, fgs[aoff][3], bgs[aoff][3]);
caca_put_str(out, x, y, str[0]);
}
else if(c >= 0x90)
{
caca_set_color_ansi(out, fgs[aoff][2], bgs[aoff][2]);
caca_put_str(out, x, y, str[0]);
}
else if(c >= 0x80)
{
caca_set_color_ansi(out, fgs[aoff][2], bgs[aoff][2]);
caca_put_str(out, x, y, str[1]);
}
else if(c >= 0x40)
{
caca_set_color_ansi(out, fgs[aoff][1], bgs[aoff][1]);
caca_put_str(out, x, y, str[2]);
}
else if(c >= 0x20)
{
caca_set_color_ansi(out, fgs[aoff][1], bgs[aoff][1]);
caca_put_str(out, x, y, str[3]);
}
else
{
caca_set_color_ansi(out, fgs[aoff][0], bgs[aoff][0]);
caca_put_str(out, x, y, str[4]);
}
}
break;
case HALFBLOCKS:
str = chars[coff + 1];
for(y = 0; y < gh; y++)
for(x = 0; x < mygw; x++)
{
uint8_t p1 = image[4 * (x + y * 2 * iw) + 2];
uint8_t p2 = image[4 * (x + (y * 2 + 1) * iw) + 2];
caca_put_str(out, x, y, str[(p1 > 0x80) + 2 * (p2 > 0x80)]);
}
break;
case QUARTERBLOCKS:
str = chars[coff + 2];
for(y = 0; y < gh; y++)
for(x = 0; x < mygw; x++)
{
uint8_t p1 = image[4 * (x * 2 + y * 2 * iw) + 2];
uint8_t p2 = image[4 * (x * 2 + 1 + y * 2 * iw) + 2];
uint8_t p3 = image[4 * (x * 2 + (y * 2 + 1) * iw) + 2];
uint8_t p4 = image[4 * (x * 2 + 1 + (y * 2 + 1) * iw) + 2];
caca_put_str(out, x, y, str[(p1 > 0x80) + 2 * (p2 > 0x80) +
4 * (p3 > 0x80) + 8 * (p4 > 0x80)]);
}
break;
}
caca_set_color_ansi(out, CACA_DEFAULT, CACA_DEFAULT);
if(ch == ' ' || ch == 0xa0)
{
caca_draw_line(out, mygw - 1, 0, mygw - 1, gh - 1, '$');
caca_draw_line(out, mygw / 2, 0, mygw / 2, gh - 1, '$');
}
caca_draw_line(out, mygw, 0, mygw, gh - 1, '@');
caca_put_char(out, mygw + 1, gh - 1, '@');
buf = caca_export_canvas_to_memory(out, "utf8", &len);
fwrite(buf, len, 1, stdout);
free(buf);
}