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/* fontdump.c -- an "xxd -i" workalike for dumping binary fonts as source code */

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#include <stdio.h>

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#include <stdlib.h>

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#include <string.h>

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static int

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hexdump(FILE *fo, FILE *fi)

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{

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	int c, n;

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	n = 0;

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	c = fgetc(fi);

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	while (c != -1)

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	{

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		n += fprintf(fo, "%d,", c);

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		if (n > 72) {

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			fprintf(fo, "\n");

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			n = 0;

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		}

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		c = fgetc(fi);

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	}

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	return n;

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}

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int

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main(int argc, char **argv)

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{

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	FILE *fo;

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	FILE *fi;

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	char fontname[256];

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	char origname[256];

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	char *basename;

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	char *p;

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	int i, len;

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	if (argc < 3)

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	{

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		fprintf(stderr, "usage: fontdump output.c input.dat\n");

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		return 1;

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	}

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	fo = fopen(argv[1], "wb");

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	if (!fo)

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	{

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		fprintf(stderr, "fontdump: could not open output file '%s'\n", argv[1]);

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		return 1;

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	}

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	fprintf(fo, "#ifndef __STRICT_ANSI__\n");

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	fprintf(fo, "#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__)\n");

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	fprintf(fo, "#if !defined(__clang__) && !defined(__ICC)\n");

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	fprintf(fo, "#define HAVE_INCBIN\n");

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	fprintf(fo, "#endif\n");

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	fprintf(fo, "#endif\n");

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	fprintf(fo, "#endif\n");

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	for (i = 2; i < argc; i++)

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	{

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		fi = fopen(argv[i], "rb");

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		if (!fi)

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		{

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			fclose(fo);

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			fprintf(stderr, "fontdump: could not open input file '%s'\n", argv[i]);

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			return 1;

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		}

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		basename = strrchr(argv[i], '/');

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		if (!basename)

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			basename = strrchr(argv[i], '\\');

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		if (basename)

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			basename++;

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		else

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			basename = argv[i];

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		strcpy(origname, basename);

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		p = strrchr(origname, '.');

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		if (p) *p = 0;

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		strcpy(fontname, origname);

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		p = fontname;

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		while (*p)

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		{

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			if (*p == '/' || *p == '.' || *p == '\\' || *p == '-')

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				*p = '_';

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			p ++;

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		}

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		fseek(fi, 0, SEEK_END);

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		len = ftell(fi);

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		fseek(fi, 0, SEEK_SET);

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		if (getenv("verbose"))

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			printf("\t{\"%s\",pdf_font_%s,%d},\n", origname, fontname, len);

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		fprintf(fo, "\n#ifdef HAVE_INCBIN\n");

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		fprintf(fo, "extern const unsigned char pdf_font_%s[%d];\n", fontname, len);

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		fprintf(fo, "asm(\".globl pdf_font_%s\");\n", fontname);

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		fprintf(fo, "asm(\".balign 8\");\n");

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		fprintf(fo, "asm(\"pdf_font_%s:\");\n", fontname);

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		fprintf(fo, "asm(\".incbin \\\"%s\\\"\");\n", argv[i]);

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		fprintf(fo, "#else\n");

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		fprintf(fo, "static const unsigned char pdf_font_%s[%d] = {\n", fontname, len);

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		hexdump(fo, fi);

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		fprintf(fo, "};\n");

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		fprintf(fo, "#endif\n");

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		fclose(fi);

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	}

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	if (fclose(fo))

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	{

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		fprintf(stderr, "fontdump: could not close output file '%s'\n", argv[1]);

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		return 1;

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	}

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	return 0;

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}

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