/**
 * $Id$
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2009 Blender Foundation.
 * All rights reserved.
 * 
 * Contributor(s): Blender Foundation.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <ft2build.h>

#include FT_FREETYPE_H
#include FT_GLYPH_H

#include "MEM_guardedalloc.h"

#include "DNA_listBase.h"
#include "DNA_vec_types.h"

#include "BKE_utildefines.h"

#include "BLI_blenlib.h"
#include "BLI_linklist.h"	/* linknode */
#include "BLI_string.h"

#include "BIF_gl.h"

#include "blf_internal_types.h"

static ListBase global_font_dir= { NULL, NULL };

DirBLF *blf_dir_find(const char *path)
{
	DirBLF *p;
	
	p= global_font_dir.first;
	while (p) {
		if (!strcmp(p->path, path))
			return(p);
		p= p->next;
	}
	return(NULL);
}

void BLF_dir_add(const char *path)
{
	DirBLF *dir;
	
	dir= blf_dir_find(path);
	if (dir) /* already in the list ? just return. */
		return;
	
	dir= (DirBLF *)MEM_mallocN(sizeof(DirBLF), "BLF_dir_add");
	dir->path= BLI_strdup(path);
	BLI_addhead(&global_font_dir, dir);
}

void BLF_dir_rem(const char *path)
{
	DirBLF *dir;
	
	dir= blf_dir_find(path);
	if (dir) {
		BLI_remlink(&global_font_dir, dir);
		MEM_freeN(dir->path);
		MEM_freeN(dir);
	}
}

char **BLF_dir_get(int *ndir)
{
	DirBLF *p;
	char **dirs;
	char *path;
	int i, count;
	
	count= BLI_countlist(&global_font_dir);
	if (!count)
		return(NULL);
	
	dirs= (char **)MEM_mallocN(sizeof(char *) * count, "BLF_dir_get");
	p= global_font_dir.first;
	i= 0;
	while (p) {
		path= BLI_strdup(p->path);
		dirs[i]= path;
		p= p->next;
	}
	*ndir= i;
	return(dirs);
}

void BLF_dir_free(char **dirs, int count)
{
	char *path;
	int i;
	
	for (i= 0; i < count; i++) {
		path= dirs[i];
		MEM_freeN(path);
	}
	MEM_freeN(dirs);
}

char *blf_dir_search(char *file)
{
	DirBLF *dir;
	char full_path[FILE_MAXDIR+FILE_MAXFILE];
	char *s;
	
	dir= global_font_dir.first;
	s= NULL;
	while (dir) {
		BLI_join_dirfile(full_path, dir->path, file);
		if (BLI_exist(full_path)) {
			s= (char *)MEM_mallocN(strlen(full_path)+1,"blf_dir_search");
			strcpy(s, full_path);
			break;
		}
		dir= dir->next;
	}
	
	if (!s) {
		/* check the current directory, why not ? */
		if (BLI_exist(file))
			s= BLI_strdup(file);
	}
	
	return(s);
}

int blf_dir_split(const char *str, char *file, int *size)
{
	int i, len;
	char *s;
	
	/* Window, Linux or Mac, this is always / */
	s= strrchr(str, '/');
	if (s) {
		len= s - str;
		for (i= 0; i < len; i++)
			file[i]= str[i];

		file[i]= '.';
		file[i+1]= 't';
		file[i+2]= 't';
		file[i+3]= 'f';
		file[i+4]= '\0';
		s++;
		*size= atoi(s);
		return(1);
	}
	return(0);
}

/* Some font have additional file with metrics information,
 * in general, the extension of the file is: .afm or .pfm
 */
char *blf_dir_metrics_search(char *filename)
{
	char *mfile;
	char *s;

	mfile= BLI_strdup(filename);
	s= strrchr(mfile, '.');
	if (s) {
		if (strlen(s) < 4) {
			MEM_freeN(mfile);
			return(NULL);
		}
		s++;
		s[0]= 'a';
		s[1]= 'f';
		s[2]= 'm';

		/* first check .afm */
		if (BLI_exist(s))
			return(s);

		/* and now check .pfm */
		s[0]= 'p';

		if (BLI_exist(s))
			return(s);
	}
	MEM_freeN(mfile);
	return(NULL);
}