* a new directory access module. It parses a directory with dirent and builds

  a m3u 'file' which it feeds to the m3u demuxer.
  Problems: - it requires a dir to end with /
            - if i enabled it, all files would use the m3u demuxer for some
            strange reason. i've spent a day hunting this down, reboot-
            strapping and doing who knows what. I'm sick of it now.
            Someone else can give it a try, if he wants to.

modules/access/directory.c

+/*****************************************************************************
+ * directory.c: expands a directory (directory: access plug-in)
+ *****************************************************************************
+ * Copyright (C) 2001, 2002 VideoLAN
+ * $Id: directory.c,v 1.1 2003/03/24 00:12:51 hartman Exp $
+ *
+ * Authors: Derk-Jan Hartman <thedj@users.sourceforge.net>
+ *
+ * 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, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <vlc/vlc.h>
+#include <vlc/input.h>
+
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_SYS_TYPES_H
+#   include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#   include <sys/stat.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#   include <errno.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#   include <fcntl.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#   include <unistd.h>
+#elif defined( WIN32 ) && !defined( UNDER_CE )
+#   include <io.h>
+#endif
+
+#if (!defined( WIN32 ) || defined(__MINGW32__))
+/* Mingw has its own version of dirent */
+#   include <dirent.h>
+#endif
+
+/*****************************************************************************
+ * Constants and structures
+ *****************************************************************************/
+#define MAX_DIR_SIZE 50000
+
+typedef struct _input_directory_s
+{
+    char		p_dir_buffer[MAX_DIR_SIZE];
+    int			i_buf_pos;
+    int			i_buf_length;
+} _input_directory_t;
+
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int     Open   ( vlc_object_t * );
+static void    Close  ( vlc_object_t * );
+
+static ssize_t Read   ( input_thread_t *, byte_t *, size_t );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+
+vlc_module_begin();
+    set_description( _("Standard filesystem directory reading") );
+    set_capability( "access", 55 );
+    add_shortcut( "directory" );
+    add_shortcut( "dir" );
+    set_callbacks( Open, Close );
+vlc_module_end();
+
+
+/*****************************************************************************
+ * Open: open the directory
+ *****************************************************************************/
+static int Open( vlc_object_t *p_this )
+{
+    input_thread_t *		p_input = (input_thread_t *)p_this;
+    char *			psz_name = p_input->psz_name;
+    _input_directory_t *	p_access_data;
+#ifdef HAVE_SYS_STAT_H
+    int                 	i_stat;
+    struct stat         	stat_info;
+#endif
+    DIR *			p_current_dir;
+    struct dirent *		p_dir_content;
+    int				i_pos=0;
+    
+    /* Initialize access plug-in structures. */
+    if( p_input->i_mtu == 0 )
+    {
+        /* Improve speed. */
+        p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
+    }
+
+    p_input->pf_read = Read;
+    p_input->pf_set_program = NULL;
+    p_input->pf_set_area = NULL;
+    p_input->pf_seek = NULL;
+    p_input->psz_demux = "m3u";
+
+#ifdef HAVE_SYS_STAT_H
+    if( ( i_stat = stat( psz_name, &stat_info )) == (-1) || !S_ISDIR( stat_info.st_mode ) )
+    {
+#   ifdef HAVE_ERRNO_H
+        msg_Warn( p_input, "cannot stat() directory `%s' (%s)",
+                  psz_name, strerror(errno));
+#   else
+        msg_Warn( p_input, "cannot stat() directory `%s'", psz_name );
+#   endif
+        return VLC_EGENERIC;
+    }
+#endif
+
+    if( psz_name[strlen(psz_name)-1] != '/' )
+    {
+        /* add the / char */
+    }
+
+    msg_Dbg( p_input, "opening directory `%s'", psz_name );
+    p_access_data = malloc( sizeof(_input_directory_t) );
+    p_input->p_access_data = (void *)p_access_data;
+    if( p_access_data == NULL )
+    {
+        msg_Err( p_input, "out of memory" );
+        return VLC_ENOMEM;
+    }
+        
+    /* have to cd into this dir */
+    p_current_dir = opendir( psz_name );
+    
+    if( p_current_dir == NULL )
+    {
+        /* something went bad, get out of here ! */
+#   ifdef HAVE_ERRNO_H
+        msg_Warn( p_input, "cannot open directory `%s' (%s)",
+                  psz_name, strerror(errno));
+#   else
+        msg_Warn( p_input, "cannot open directory `%s'", psz_name );
+#   endif
+        free( p_access_data );
+        return VLC_EGENERIC;
+    }
+    
+    p_dir_content = readdir( p_current_dir );
+
+    /* while we still have entries in the directory */
+    while( p_dir_content != NULL && i_pos < MAX_DIR_SIZE )
+    {
+        /* if it is "." or "..", forget it */
+        if( ( strcmp( p_dir_content->d_name, "." ) != 0 ) &&
+            ( strcmp( p_dir_content->d_name, ".." ) != 0 ) )
+        {
+            msg_Dbg( p_input, "%s", p_dir_content->d_name );
+            memcpy( &p_access_data->p_dir_buffer[i_pos], p_dir_content->d_name, strlen( p_dir_content->d_name ) );
+            i_pos += strlen( p_dir_content->d_name );
+            p_access_data->p_dir_buffer[i_pos] = '\n';
+            i_pos++;
+        }
+        p_dir_content = readdir( p_current_dir );
+    }
+    p_access_data->p_dir_buffer[i_pos] = '\0';
+    i_pos++;
+    p_access_data->i_buf_length = i_pos;
+    p_access_data->i_buf_pos = 0;
+    
+    closedir( p_current_dir );
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close: close the target
+ *****************************************************************************/
+static void Close( vlc_object_t * p_this )
+{
+    input_thread_t * p_input = (input_thread_t *)p_this;
+    _input_directory_t * p_access_data = (_input_directory_t *)p_input->p_access_data;
+
+    msg_Info( p_input, "closing `%s/%s://%s'", 
+              p_input->psz_access, p_input->psz_demux, p_input->psz_name );
+
+    free( p_access_data );
+}
+
+/*****************************************************************************
+ * Read: read directory and output to demux.
+ *****************************************************************************/
+static ssize_t Read( input_thread_t * p_input, byte_t * p_buffer, size_t i_len )
+{
+    _input_directory_t * p_access_data = (_input_directory_t *)p_input->p_access_data;
+    int i_ret = 0;
+    unsigned int i_remaining = p_access_data->i_buf_length - p_access_data->i_buf_pos +1;
+    
+    if( i_remaining > 0 )
+    {
+        i_ret = (i_len > i_remaining) ? i_remaining : i_len;
+        memcpy( p_buffer, &p_access_data->p_dir_buffer[p_access_data->i_buf_pos], i_ret );
+        p_access_data->i_buf_pos += i_ret;
+        return (ssize_t) i_ret;
+    }
+    
+    p_input->stream.b_connected = VLC_TRUE;
+    return 0;
+}