82 lines
2 KiB
C
82 lines
2 KiB
C
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/* Convert standard binary font to codepage format */
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#include <stdio.h>
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#include <stdlib.h>
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int fontheight;
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int sfontsize;
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int font_nuchars;
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unsigned char sfontbuf[32 * 256];
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unsigned char tfontbuf[32 * 256];
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FILE *sf;
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FILE *tf;
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int
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main (int argc, char **argv)
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{
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int i;
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if (argc != 4)
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{
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printf ("Syntax: convfont fontfile fontheight vgafontfile\n");
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printf (
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"\nconvfont - convert standard format binary font to codepage format\n"
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"The converted font is written to vgafontfile.\n");
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printf (
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"A binary font file of any number of characters up to 256 can be used, although\n"
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"at least defining the first 128 characters is a good idea. The fontheight\n"
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"should be in the range 1-32.\n"
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);
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return 1;
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}
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if ((sf = fopen (argv[1], "rb")) == NULL)
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{
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printf ("convfont: Unable to open file.\n");
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return 1;
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}
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if ((tf = fopen (argv[3], "wb")) == NULL)
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{
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printf ("convfont: Unable to create file.\n");
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return 1;
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}
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fontheight = atoi (argv[2]);
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if (fontheight < 1 || fontheight > 32)
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{
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printf ("convfont: Invalid fontheight.\n");
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return 1;
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}
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fseek (sf, 0, SEEK_END);
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sfontsize = ftell (sf);
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fseek (sf, 0, SEEK_SET);
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font_nuchars = sfontsize / fontheight;
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printf ("Converting %d characters\n", font_nuchars);
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if (font_nuchars < 1 || font_nuchars > 256)
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{
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printf ("convfont: Invalid number of characters in font.\n");
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return 1;
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}
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fread (sfontbuf, 1, sfontsize, sf);
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fclose (sf);
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for (i = 0; i < font_nuchars; i++)
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{
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int j;
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for (j = 0; j < fontheight; j++)
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tfontbuf[i * 32 + j] =
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sfontbuf[i * fontheight + j];
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for (j = 0; j < 32 - fontheight; j++)
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tfontbuf[i * 32 + fontheight] = 0;
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}
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/* clear remaining characters */
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for (i = font_nuchars * 32; i < 32 * 256; i++)
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tfontbuf[i] = 0;
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printf ("Writing font file.\n");
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fwrite (tfontbuf, 1, 32 * 256, tf);
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fclose (tf);
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return 0;
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}
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