/* $Id: ttf.c,v 1.1 2010/07/04 18:08:07 khorben Exp $ */
/* Copyright (c) 2010 khorben of Uberwall */
/* 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 version 2 of the License.
 *
 * 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 */



#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include "plugin.h"


/* ttf */
/* types */
#pragma pack(1)
struct header
{
	uint32_t scalertype;
	uint16_t numtables;
	uint16_t searchrange;
	uint16_t entryselector;
	uint16_t rangeshift;
};
#pragma pack()

/* variables */
/* magic */
static unsigned char sig1[] = "\x74\x72\x75\x65";
static unsigned char sig2[] = "\x00\x01\x00\x00";
static unsigned char sig3[] = "\x74\x79\x70\x31";

static PluginMagic ttf_magic[] =
{
	{ 0,	0,	sig1,	sizeof(sig1)-1	},
	{ 0,	0,	sig2,	sizeof(sig2)-1	},
	{ 0,	0,	sig3,	sizeof(sig3)-1	},
	{ 0,	0,	NULL,	0		}
};


/* functions */
static int ttf_callback(PluginHelper * ph, int signature, FILE * fp);


/* plugin */
Plugin plugin =
{
	PT_DATA,
	"TTF",
	ttf_magic,
	ttf_callback
};


/* private */
static int _callback_header(PluginHelper * ph, struct header * hdr);

static int ttf_callback(PluginHelper * ph, int signature, FILE * fp)
{
	int score = 0;
	struct header buf;

	if(fread(&buf, sizeof(buf), 1, fp) != 1)
		return -1;
	buf.scalertype = htob32(buf.scalertype);
	buf.numtables = htob16(buf.numtables);
	score += _callback_header(ph, &buf);
	return score;
}

static int _callback_header(PluginHelper * ph, struct header * hdr)
{
	ph->printf(ph, "scaler 0x%08x, %u tables\n", hdr->scalertype,
			hdr->numtables);
	return 0;
}