/* font.c -- general font init and clean up codes * Copyright (C) 1996 Li-Da Lho, All right reserved   */#include <stdio.h>#include <stdlib.h>#include <string.h>#include "config.h"#include "ttf.h"#include "ttfutil.h"#ifdef MEMCHECK#include <dmalloc.h>#endif/* 	$Id: font.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $	 */#ifndef lintstatic char vcid[] = "$Id: font.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $";#endif /* lint */static void ttfInitInterpreter(TTFontPtr font);TTFontPtr ttfInitFont(char *filename){    TTFontPtr font;    font = (TTFontPtr) calloc(1,sizeof(TTFont));    font->ttfname = filename;    if ((font->fp = fopen (filename,"r")) == NULL)	{	    fprintf(stderr,"Can't open ttf file %s\n",filename);	    free(font);	    return NULL;	}        ttfLoadFont(font, 0);    return font;}void ttfLoadFont(TTFontPtr font, ULONG offset){    if (fseek(font->fp,offset,SEEK_SET) != 0)	ttfError("Fseek Failed\n");    /* offset table */    font->version = ttfGetFixed(font->fp);    font->numTables = ttfGetUSHORT(font->fp);    ttfInitTableDir(font,offset);        ttfLoadRequiredTables(font);    ttfLoadOptionalTables(font);    ttfInitInterpreter(font);    /* initialize the reference count to 1 */    font->refcount = (int *) calloc(1, sizeof(int));    *(font->refcount) = 1;}void ttfFreeFont(TTFontPtr font){    ttfFreeRequiredTables(font);        ttfFreeOptionalTables(font);        ttfFreeTableDir(font->dir);    free(font->refcount);    free(font);}void ttfLoadRequiredTables(TTFontPtr font){    ttfInitCMAP(font);    ttfInitNAME(font);    ttfInitMAXP(font);    ttfInitHEAD(font);    ttfInitLOCA(font);    ttfInitGlyphCache(font);    ttfInitGLYF(font);    ttfInitHHEA(font);    ttfInitHMTX(font);    ttfInitPOST(font);    ttfInitOS2(font);}void ttfFreeRequiredTables(TTFontPtr font){    ttfFreeCMAP(font->cmap);    ttfFreeNAME(font->name);    ttfCleanUpGlyphCache(font);    ttfFreeLOCA(font->loca);    ttfFreeHEAD(font->head);    ttfFreeMAXP(font->maxp);    ttfFreeHMTX(font->hmtx);    ttfFreeHHEA(font->hhea);         ttfFreePOST(font->post);    ttfFreeOS2(font->os2);}void ttfLoadOptionalTables(TTFontPtr font){    ttfInitCVT(font);    ttfInitFPGM(font);    ttfInitGASP(font);    ttfInitHDMX(font);    ttfInitKERN(font);    ttfInitPREP(font);    ttfInitLTSH(font);    ttfInitPCLT(font);    ttfInitVDMX(font);    ttfInitVHEA(font);    ttfInitVMTX(font);}void ttfFreeOptionalTables(TTFontPtr font){    ttfFreeCVT(font->cvt);    ttfFreeFPGM(font->fpgm);    ttfFreeGASP(font->gasp);    ttfFreeHDMX(font->hdmx);    ttfFreeKERN(font->kern);    ttfFreePREP(font->prep);    ttfFreeLTSH(font->ltsh);    ttfFreePCLT(font->pclt);    ttfFreeVDMX(font->vdmx);    ttfFreeVHEA(font->vhea);    ttfFreeVMTX(font->vmtx);}/* make a clone of the origional font * This is use for fonts that support more than one encoding scheme * * Problems:  *       1. which of those members can be shared between two instances *       2. How can we free a font safely */TTFontPtr ttfCloneFont(TTFontPtr font){    TTFontPtr newfont;    newfont = (TTFontPtr) calloc(1,sizeof(TTFont));        memcpy(newfont, font, sizeof(TTFont));    newfont->refcount += 1;    return newfont;}static void ttfInitInterpreter(TTFontPtr font){    ttfInitStorageArea(font);    ttfInitStack(font);    ttfInitGraphicsState(font);    }