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|
/*****************************************************************************
* simple.c - The OSD Menu simple parser code.
*****************************************************************************
* Copyright (C) 2005-2008 M2X
* $Id: f76924217dc9fdb24e1fd655586180ab820c6523 $
*
* Authors: Jean-Paul Saman
*
* 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.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_osd.h>
#include <vlc_fs.h>
#include <limits.h>
#include "osd_menu.h"
int osd_parser_simpleOpen( vlc_object_t *p_this );
/*****************************************************************************
* Simple parser open function
*****************************************************************************/
int osd_parser_simpleOpen( vlc_object_t *p_this )
{
osd_menu_t *p_menu = (osd_menu_t *) p_this;
osd_button_t *p_current = NULL; /* button currently processed */
osd_button_t *p_prev = NULL; /* previous processed button */
FILE *fd = NULL;
int result = 0;
if( !p_menu ) return VLC_ENOOBJ;
msg_Dbg( p_this, "opening osdmenu definition file %s", p_menu->psz_file );
fd = vlc_fopen( p_menu->psz_file, "r" );
if( !fd )
{
msg_Err( p_this, "failed to open osdmenu definition file %s",
p_menu->psz_file );
return VLC_EGENERIC;
}
/* Read first line */
if( !feof( fd ) )
{
char action[25] = "";
char cmd[25] = "";
char path[PATH_MAX] = "";
char *psz_path = NULL;
size_t i_len = 0;
long pos = 0;
result = fscanf(fd, "%24s %255s", action, path );
/* override images path ? */
psz_path = var_InheritString( p_this, "osdmenu-file-path" );
if( psz_path )
{
/* psz_path is not null and therefor path cannot be NULL
* it might be null terminated.
*/
strncpy( path, psz_path, PATH_MAX );
free( psz_path );
psz_path = NULL;
}
/* NULL terminate before asking the length of path[] */
path[PATH_MAX-1] = '\0';
i_len = strlen(path);
/* Protect against buffer overflow:
* max index is PATH_MAX-1 and we increment by 1 after
* so PATH_MAX-2 is the bigest we can have */
if( i_len > PATH_MAX - 2 )
i_len = PATH_MAX - 2;
#if defined(WIN32) || defined(UNDER_CE)
if( (i_len > 0) && path[i_len] != '\\' )
path[i_len] = '\\';
#else
if( (i_len > 0) && path[i_len] != '/' )
path[i_len] = '/';
#endif
path[i_len+1] = '\0';
if( result == 0 || result == EOF )
goto error;
msg_Dbg( p_this, "osdmenu dir %s", path );
if( i_len == 0 )
p_menu = osd_MenuNew( p_menu, NULL, 0, 0 );
else
p_menu = osd_MenuNew( p_menu, path, 0, 0 );
/* Peek for 'style' argument */
pos = ftell( fd );
if( pos < 0 )
goto error;
result = fscanf(fd, "%24s %24s", cmd, action );
if( result == 0 || result == EOF )
goto error;
msg_Dbg( p_this, "osdmenu %s %s", cmd, action );
if( strncmp( cmd, "style", 5 ) == 0 )
{
if( strncmp( action, "default", 7) == 0 )
{
p_menu->i_style = OSD_MENU_STYLE_SIMPLE;
}
else if( strncmp( action, "concat", 6) == 0 )
{
p_menu->i_style = OSD_MENU_STYLE_CONCAT;
}
}
else
{
result = fseek( fd, pos, SEEK_SET );
if( result < 0 )
goto error;
}
}
if( !p_menu )
goto error;
/* read successive lines */
while( !feof( fd ) )
{
osd_state_t *p_state_current = NULL; /* button state currently processed */
osd_state_t *p_state_prev = NULL; /* previous state processed button */
char cmd[25] = "";
char action[25] = "";
char state[25] = "";
char file[256] = "";
char path[PATH_MAX] = "";
int i_x = 0;
int i_y = 0;
result = fscanf( fd, "%24s %24s (%d,%d)", cmd, action, &i_x, &i_y );
if( result == 0 )
goto error;
if( strncmp( &cmd[0], "action", 6 ) != 0 )
break;
msg_Dbg( p_this, " + %s hotkey=%s (%d,%d)", cmd, action, i_x, i_y );
p_prev = p_current;
p_current = osd_ButtonNew( action, i_x, i_y );
if( !p_current )
goto error;
if( p_prev )
p_prev->p_next = p_current;
else
p_menu->p_button = p_current;
p_current->p_prev = p_prev;
/* parse all states */
while( !feof( fd ) )
{
char type[25] = "";
result = fscanf( fd, "\t%24s", state );
if( result == 0 )
goto error;
/* FIXME: We only parse one level deep now */
if( strncmp( state, "action", 6 ) == 0 )
{
osd_button_t *p_up = NULL;
result = fscanf( fd, "%24s (%d,%d)", action, &i_x, &i_y );
if( result == 0 )
goto error;
/* create new button */
p_up = osd_ButtonNew( action, i_x, i_y );
if( !p_up )
goto error;
/* Link to list */
p_up->p_down = p_current;
p_current->p_up = p_up;
msg_Dbg( p_this, " + (menu up) hotkey=%s (%d,%d)", action, i_x, i_y );
/* Parse type state */
result = fscanf( fd, "\t%24s %24s", cmd, type );
if( result == 0 )
goto error;
if( strncmp( cmd, "type", 4 ) == 0 )
{
if( strncmp( type, "volume", 6 ) == 0 )
{
p_menu->p_state->p_volume = p_up;
msg_Dbg( p_this, " + type=%s", type );
}
}
/* Parse range state */
result = fscanf( fd, "\t%24s", state );
if( result == 0 )
goto error;
/* Parse the range state */
if( strncmp( state, "range", 5 ) == 0 )
{
osd_state_t *p_range_current = NULL; /* range state currently processed */
osd_state_t *p_range_prev = NULL; /* previous state processed range */
int i_index = 0;
p_up->b_range = true;
result = fscanf( fd, "\t%24s", action );
if( result == 0 )
goto error;
result = fscanf( fd, "\t%d", &i_index );
if( result == 0 )
goto error;
msg_Dbg( p_this, " + (menu up) hotkey down %s, file=%s%s",
action, p_menu->psz_path, file );
free( p_up->psz_action_down );
p_up->psz_action_down = strdup( action );
/* Parse range contstruction :
* range <hotkey>
* <state1> <file1>
*
* <stateN> <fileN>
* end
*/
while( !feof( fd ) )
{
result = fscanf( fd, "\t%255s", file );
if( result == 0 )
goto error;
if( strncmp( file, "end", 3 ) == 0 )
break;
p_range_prev = p_range_current;
if( p_menu->psz_path )
{
size_t i_path_size = strlen( p_menu->psz_path );
size_t i_file_size = strlen( file );
if( (i_path_size + i_file_size >= PATH_MAX) ||
(i_path_size >= PATH_MAX) )
goto error;
strncpy( path, p_menu->psz_path, i_path_size );
strncpy( &path[i_path_size], file,
PATH_MAX - (i_path_size + i_file_size) );
path[ i_path_size + i_file_size ] = '\0';
p_range_current = osd_StateNew( p_menu, path, "pressed" );
}
else /* absolute paths are used. */
p_range_current = osd_StateNew( p_menu, file, "pressed" );
if( !p_range_current )
goto error;
if( !p_range_current->p_pic )
{
osd_StatesFree( p_menu, p_range_current );
goto error;
}
p_range_current->i_x = i_x;
p_range_current->i_y = i_y;
/* increment the number of ranges for this button */
p_up->i_ranges++;
if( p_range_prev )
p_range_prev->p_next = p_range_current;
else
p_up->p_states = p_range_current;
p_range_current->p_prev = p_range_prev;
msg_Dbg( p_this, " |- range=%d, file=%s%s",
p_up->i_ranges,
p_menu->psz_path, file );
}
if( i_index > 0 )
{
osd_state_t *p_range = NULL;
/* Find the default index for state range */
p_range = p_up->p_states;
while( (--i_index > 0) && p_range->p_next )
{
osd_state_t *p_temp = NULL;
p_temp = p_range->p_next;
p_range = p_temp;
}
p_up->p_current_state = p_range;
}
else p_up->p_current_state = p_up->p_states;
}
result = fscanf( fd, "\t%24s", state );
if( result == 0 )
goto error;
if( strncmp( state, "end", 3 ) != 0 )
goto error;
/* Continue at the beginning of the while() */
continue;
}
/* Parse the range state */
if( strncmp( state, "range", 5 ) == 0 )
{
osd_state_t *p_range_current = NULL; /* range state currently processed */
osd_state_t *p_range_prev = NULL; /* previous state processed range */
int i_index = 0;
p_current->b_range = true;
result = fscanf( fd, "\t%24s", action );
if( result == 0 )
goto error;
result = fscanf( fd, "\t%d", &i_index );
if( result == 0 )
goto error;
msg_Dbg( p_this, " + hotkey down %s, file=%s%s",
action, p_menu->psz_path, file );
free( p_current->psz_action_down );
p_current->psz_action_down = strdup( action );
/* Parse range contstruction :
* range <hotkey>
* <state1> <file1>
*
* <stateN> <fileN>
* end
*/
while( !feof( fd ) )
{
result = fscanf( fd, "\t%255s", file );
if( result == 0 )
goto error;
if( strncmp( file, "end", 3 ) == 0 )
break;
p_range_prev = p_range_current;
if( p_menu->psz_path )
{
size_t i_path_size = strlen( p_menu->psz_path );
size_t i_file_size = strlen( file );
if( (i_path_size + i_file_size >= PATH_MAX) ||
(i_path_size >= PATH_MAX) )
goto error;
strncpy( path, p_menu->psz_path, i_path_size );
strncpy( &path[i_path_size], file,
PATH_MAX - (i_path_size + i_file_size) );
path[ i_path_size + i_file_size ] = '\0';
p_range_current = osd_StateNew( p_menu, path, "pressed" );
}
else /* absolute paths are used. */
p_range_current = osd_StateNew( p_menu, file, "pressed" );
if( !p_range_current )
goto error;
if( !p_range_current->p_pic )
{
osd_StatesFree( p_menu, p_range_current );
goto error;
}
p_range_current->i_x = i_x;
p_range_current->i_y = i_y;
/* increment the number of ranges for this button */
p_current->i_ranges++;
if( p_range_prev )
p_range_prev->p_next = p_range_current;
else
p_current->p_states = p_range_current;
p_range_current->p_prev = p_range_prev;
msg_Dbg( p_this, " |- range=%d, file=%s%s",
p_current->i_ranges,
p_menu->psz_path, file );
}
if( i_index > 0 )
{
osd_state_t *p_range = NULL;
/* Find the default index for state range */
p_range = p_current->p_states;
while( (--i_index > 0) && p_range->p_next )
{
osd_state_t *p_temp = NULL;
p_temp = p_range->p_next;
p_range = p_temp;
}
p_current->p_current_state = p_range;
}
else p_current->p_current_state = p_current->p_states;
/* Continue at the beginning of the while() */
continue;
}
if( strncmp( state, "end", 3 ) == 0 )
break;
result = fscanf( fd, "\t%255s", file );
if( result == 0 )
goto error;
p_state_prev = p_state_current;
if( ( strncmp( ppsz_button_states[0], state, strlen(ppsz_button_states[0]) ) != 0 ) &&
( strncmp( ppsz_button_states[1], state, strlen(ppsz_button_states[1]) ) != 0 ) &&
( strncmp( ppsz_button_states[2], state, strlen(ppsz_button_states[2]) ) != 0 ) )
{
msg_Err( p_this, "invalid button state %s for button %s "
"expected %u: unselect, select or pressed)",
state, action, (unsigned)strlen(state));
goto error;
}
if( p_menu->psz_path )
{
size_t i_path_size = strlen( p_menu->psz_path );
size_t i_file_size = strlen( file );
if( (i_path_size + i_file_size >= PATH_MAX) ||
(i_path_size >= PATH_MAX) )
goto error;
strncpy( path, p_menu->psz_path, i_path_size );
strncpy( &path[i_path_size], file,
PATH_MAX - (i_path_size + i_file_size) );
path[ i_path_size + i_file_size ] = '\0';
p_state_current = osd_StateNew( p_menu, path, state );
}
else /* absolute paths are used. */
p_state_current = osd_StateNew( p_menu, file, state );
if( !p_state_current )
goto error;
if( !p_state_current->p_pic )
{
osd_StatesFree( p_menu, p_state_current );
goto error;
}
p_state_current->i_x = i_x;
p_state_current->i_y = i_y;
if( p_state_prev )
p_state_prev->p_next = p_state_current;
else
p_current->p_states = p_state_current;
p_state_current->p_prev = p_state_prev;
msg_Dbg( p_this, " |- state=%s, file=%s%s", state,
p_menu->psz_path, file );
}
p_current->p_current_state = p_current->p_states;
}
/* Find the last button and store its pointer.
* The OSD menu behaves like a roundrobin list.
*/
p_current = p_menu->p_button;
while( p_current && p_current->p_next )
{
osd_button_t *p_temp = NULL;
p_temp = p_current->p_next;
p_current = p_temp;
}
p_menu->p_last_button = p_current;
fclose( fd );
return VLC_SUCCESS;
error:
msg_Err( p_menu, "parsing file failed (returned %d)", result );
if( p_menu )
osd_MenuFree( p_menu );
fclose( fd );
return VLC_EGENERIC;
}
|
