blf_dir.c

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/*
 * $Id: blf_dir.c 36594 2011-05-10 13:11:36Z campbellbarton $
 *
 * ***** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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_vec_types.h"

#include "BKE_utildefines.h"

#include "BLI_blenlib.h"

#include "BIF_gl.h"

#include "BLF_api.h"
#include "blf_internal_types.h"
#include "blf_internal.h"

static ListBase global_font_dir= { NULL, NULL };

static DirBLF *blf_dir_find(const char *path)
{
        DirBLF *p;
        
        p= global_font_dir.first;
        while (p) {
                if (BLI_path_cmp(p->path, path) == 0)
                        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(const char *file)
{
        DirBLF *dir;
        char full_path[FILE_MAXDIR+FILE_MAXFILE];
        char *s= NULL;

        for(dir=global_font_dir.first; dir; dir= dir->next) {
                BLI_join_dirfile(full_path, sizeof(full_path), dir->path, file);
                if (BLI_exist(full_path)) {
                        s= BLI_strdup(full_path);
                        break;
                }
        }

        if (!s) {
                /* check the current directory, why not ? */
                if (BLI_exist(file))
                        s= BLI_strdup(file);
        }
        
        return(s);
}

#if 0 // UNUSED
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);
}
#endif

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