filetype.cpp

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/*
 * Copyright 2008 François Revol <mmu_man@users.sourceforge.net>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf 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.
 *
 * NetSurf 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, see <http://www.gnu.org/licenses/>.
 */
 
#define __STDBOOL_H__   1
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
 
#include <Mime.h>
#include <NodeInfo.h>
#include <String.h>
 
extern "C" {
#include "utils/log.h"
#include "utils/hashtable.h"
#include "utils/utils.h"
}
 
#include "beos/filetype.h"
#include "beos/gui.h"
 
static struct {
        const char *type;
        const char *ext1;
        const char *ext2;
} default_types[] = {
        { "text/plain", "txt", NULL },
        { "text/html", "htm", "html" },
        { "text/css", "css", NULL },
        { "image/gif", "gif", NULL },
        { "image/jpeg", "jpg", "jpeg" },
        { "image/png", "png", NULL },
        { "image/jng", "jng", NULL },
        { NULL, NULL, NULL }
};
 
void beos_fetch_filetype_init(void)
{
        BMimeType m;
        status_t err;
        int i;
 
        // make sure we have basic mime types in the database
        for (i = 0; default_types[i].type; i++) {
                if (m.SetTo(default_types[i].type) < B_OK)
                        continue;
                if (m.IsInstalled())
                        continue;
                err = m.Install();
                if (err < B_OK) {
                        beos_warn_user("Mime", strerror(err));
                        continue;
                }
                // the mime db doesn't know about it yet
                BMessage extensions('exts');
                if (default_types[i].ext1)
                        extensions.AddString("extensions", default_types[i].ext1);
                if (default_types[i].ext2)
                        extensions.AddString("extensions", default_types[i].ext2);
                err = m.SetFileExtensions(&extensions);
                if (err < B_OK) {
                        beos_warn_user("Mime", strerror(err));
                }
        }
}
 
void beos_fetch_filetype_fin(void)
{
}
 
const char *fetch_filetype(const char *unix_path)
{
        // struct stat statbuf;
        status_t err;
        int i;
        // NOT THREADSAFE
        static char type[B_MIME_TYPE_LENGTH];
 
        // override reading the mime type for known types
        // avoids getting CSS files as text/x-source-code
        // even though it's the mime sniffer rules that should be fixed.
        BString ext(unix_path);
        ext.Remove(0, ext.FindLast('.') + 1);
        for (i = 0; default_types[i].type; i++) {
                if (ext == default_types[i].ext1)
                        return default_types[i].type;
                if (ext == default_types[i].ext2)
                        return default_types[i].type;
        }
 
        BEntry entry(unix_path, true);
        BNode node(&entry);
        err = node.InitCheck();
        if (err < B_OK)
                return "text/plain";
 
        if (node.IsDirectory())
                return "application/x-netsurf-directory";
 
        BNodeInfo info(&node);
        err = info.InitCheck();
        if (err < B_OK)
                return "test/plain";
 
        err = info.GetType(type);
        if (err < B_OK) {
                // not there yet, sniff and retry
                err = update_mime_info(unix_path, false, true, false);
                if (err < B_OK)
                        return "text/plain";
                err = info.GetType(type);
                if (err < B_OK)
                        return "text/plain";
        }
        
        return type;
}