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/* BOGL - Ben's Own Graphics Library.
Written by Ben Pfaff <pfaffben@debian.org>.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA. */
#define _GNU_SOURCE 1
#include <ctype.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wctype.h>
#include "bogl.h"
#include "bogl-font.h"
static void print_glyph (u_int32_t *content, int height, int w);
static int bogl_write_font(int fd, struct bogl_font *font);
int
main (int argc, char *argv[])
{
struct bogl_font *font;
int index_size = 0;
int content_size = 0;
int i, j, k, cp, n;
char buf[MB_LEN_MAX+1];
setlocale (LC_ALL, "");
/* Check for proper usage. */
if (!((argc == 2) || (argc == 3 && !strcmp (argv[1], "-b"))))
{
fprintf (stderr, "Usage:\n%s font.bdf > font.c\n"
"%s -b font.bdf > font.bgf\n", argv[0], argv[0]);
return EXIT_FAILURE;
}
/* Read font file. */
font = bogl_read_bdf (argc == 2 ? argv[1] : argv[2]);
if (!font)
{
fputs (bogl_error (), stderr);
return EXIT_FAILURE;
}
/* Write BGF font if -b. */
if (argc == 3)
{
if (bogl_write_font (1, font))
{
fputs ("bogl_write_font failed\n", stderr);
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
/* Output header. */
printf ("/* Generated by bdftobogl. Do not modify! */\n");
printf ("#include \"bogl.h\"\n");
/* Output offsets, and get index_size and content_size. */
printf ("\n/* Offsets into index. */\n");
printf ("static int _%s_offset[%d] = {\n", font->name, font->index_mask+1);
for (i = 0; i <= font->index_mask; i++)
{
printf (" %d, /* (0x%x) */\n", font->offset[i], i);
for (j = font->offset[i]; font->index[j] != 0; j += 2)
{
k = font->index[j+1] +
font->height * (((font->index[j] & font->index_mask) + 31) / 32);
if (k > content_size)
content_size = k;
}
if (j > index_size)
index_size = j;
}
++index_size;
printf ("};\n");
/* Output index. */
printf ("\n/* Index into content data. */\n");
printf ("static int _%s_index[%d] = {\n", font->name, index_size);
i = 0;
while (i < index_size)
if (font->index[i] == 0)
printf (" %d,\n", font->index[i++]);
else if (i < index_size - 1)
{
printf (" 0x%x, %d,\n", font->index[i], font->index[i+1]);
i += 2;
}
else
printf (" %d, /* Hm... */\n", font->index[i++]);
printf ("};\n");
/* Print out each character's picture and data. */
printf ("\n/* Font character content data. */\n");
printf ("static u_int32_t _%s_content[] = {\n\n", font->name);
cp = 0;
while (cp < content_size)
{
int width = 0;
for (i = 0; i <= font->index_mask; i++)
for (j = font->offset[i]; font->index[j] != 0; j += 2)
if (font->index[j+1] == cp)
{
wchar_t wc = (font->index[j] & ~font->index_mask) | i;
int w = font->index[j] & font->index_mask;
if (iswprint(wc))
{
wctomb(0, 0);
n = wctomb(buf, wc);
buf[(n == -1) ? 0 : n] = '\0';
printf ("/* %d: character %s (0x%lx), width %d */\n",
cp, buf, (long)wc, w);
}
else
printf ("/* %d: unprintable character 0x%lx, width %d */\n",
cp, (long)wc, w);
if (w > width)
width = w;
}
if (width && cp + font->height * ((width + 31) / 32) <= content_size)
{
print_glyph (&font->content[cp], font->height, width);
printf ("\n");
cp += font->height * ((width + 31) / 32);
}
else
printf ("0x%08x,\n", font->content[cp++]);
}
printf ("};\n\n");
/* Print the font structure definition. */
printf ("/* Exported structure definition. */\n");
printf ("const struct bogl_font font_%s = {\n", font->name);
printf (" \"%s\",\n", font->name);
printf (" %d,\n", font->height);
printf (" 0x%x,\n", font->index_mask);
printf (" _%s_offset,\n", font->name);
printf (" _%s_index,\n", font->name);
printf (" _%s_content,\n", font->name);
printf ("};\n");
return EXIT_SUCCESS;
}
/* Print a picture of the glyph for human inspection, then the hex
data for machine consumption. */
static void
print_glyph (u_int32_t *content, int height, int width)
{
int i, j;
printf ("/* +");
for (i = 0; i < width; i++)
printf ("-");
printf ("+\n");
for (i = 0; i < height; i++)
{
printf (" |");
for (j = 0; j < width; j++)
putchar (content[i+(j/32)*height] & (1 << (31-j%32)) ? '*' : ' ');
printf ("|\n");
}
printf (" +");
for (i = 0; i < width; i++)
printf ("-");
printf ("+ */\n");
for (i = 0; i < height*((width+31)/32); i++)
printf ("0x%08x,\n", content[i]);
}
/* Write with repeated attempts and return number of bytes not written. */
static size_t my_write(int fd, const void *buf, size_t count)
{
ssize_t n;
while (count > 0 && (n = write(fd, buf, count)) != -1)
buf += n, count -= n;
return count;
}
const unsigned char zero_buf[16];
/* Write BGF font and return non-zero on failure. */
static int bogl_write_font(int fd, struct bogl_font *font)
{
struct bogl_font font1;
int i, j, k, index_size, content_size, name_len, name_pad;
if (my_write(fd, "BGF1", 4))
return 1;
memcpy(&font1, font, sizeof(font1));
/* Get index_size and content_size. */
index_size = content_size = 0;
for (i = 0; i <= font->index_mask; i++) {
for (j = font->offset[i]; font->index[j] != 0; j += 2) {
k = font->index[j+1] +
font->height * (((font->index[j] & font->index_mask) + 31) / 32);
if (k > content_size)
content_size = k;
}
if (j > index_size)
index_size = j;
}
++index_size;
name_len = strlen (font->name) + 1;
name_pad = sizeof (long) - (name_len % sizeof (long));
if (name_pad == sizeof (long))
name_pad = 0;
font1.name = (void *)0 + 4 + sizeof(font1);
font1.offset = (void *)font1.name + name_len + name_pad;
font1.index = (void *)font1.offset + (font->index_mask + 1) * sizeof(int);
font1.content = (void *)font1.index + index_size * sizeof(int);
if (my_write(fd, &font1, sizeof(font1)) ||
my_write(fd, font->name, name_len) ||
my_write(fd, zero_buf, name_pad) ||
my_write(fd, font->offset, (font->index_mask + 1) * sizeof(int)) ||
my_write(fd, font->index, index_size * sizeof(int)) ||
my_write(fd, font->content, content_size * sizeof(u_int32_t)))
return 1;
return 0;
}
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