blf_dir.c

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/*
 * ***** 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_callocN(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_callocN(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_MAX];
    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_exists(full_path)) {
            s= BLI_strdup(full_path);
            break;
        }
    }

    if (!s) {
        /* check the current directory, why not ? */
        if (BLI_exists(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 (BLI_strnlen(s, 4) < 4) {
            MEM_freeN(mfile);
            return NULL;
        }
        s++;
        s[0]= 'a';
        s[1]= 'f';
        s[2]= 'm';

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

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

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