/* libquvi
* Copyright (C) 2012,2013 Toni Gundogdu <legatvs@gmail.com>
*
* This file is part of libquvi <http://quvi.sourceforge.net/>.
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* This library 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General
* Public License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
/*
* NOTE: The error messages produced in these functions are intended for
* developers. They would typically be seen when a new script is
* being developed or an old one is being maintained.
*
* These messages should be clear, indicating the actual error,
* minimizing the time spent on locating the problem in the script.
*/
#include "config.h"
#include <lauxlib.h>
#include <glib.h>
#include "quvi.h"
/* -- */
#include "_quvi_s.h"
#include "_quvi_playlist_s.h"
#include "_quvi_script_s.h"
/* -- */
#include "lua/setfield.h"
#include "lua/chk.h"
#include "lua/def.h"
#include "misc/playlist.h"
static const gchar script_func[] = "parse";
static gpointer _playlist_media_new()
{
_quvi_playlist_media_t qpm = g_new0(struct _quvi_playlist_media_s, 1);
qpm->title = g_string_new(NULL);
qpm->url = g_string_new(NULL);
return (qpm);
}
static gboolean _new_media(lua_State *l, _quvi_playlist_t qp,
const gchar *script_path, const gint i,
_quvi_playlist_media_t *qpm)
{
*qpm = _playlist_media_new();
lua_pushnil(l);
while (lua_next(l, LI_KEY)) /* For each qargs.media */
{
l_chk_assign_n(l, PSM_DURATION_MS, &(*qpm)->duration_ms);
l_chk_assign_s(l, PSM_TITLE, (*qpm)->title, TRUE, FALSE);
l_chk_assign_s(l, PSM_URL, (*qpm)->url, TRUE, TRUE);
lua_pop(l, 1);
}
if ((*qpm)->url->len ==0)
{
m_playlist_media_free(*qpm);
*qpm = NULL;
}
return ( ((*qpm)->url->len >0) ? TRUE:FALSE);
}
/* For each qargs.media */
static void _foreach_media(lua_State *l, _quvi_playlist_t qp,
const gchar *script_path)
{
_quvi_playlist_media_t qpm;
gint i;
i = 0;
lua_pushnil(l);
while (lua_next(l, LI_KEY))
{
if (lua_istable(l, LI_VALUE))
{
if (_new_media(l, qp, script_path, ++i, &qpm) == TRUE)
qp->media = g_slist_prepend(qp->media, qpm);
}
lua_pop(l, 1);
}
qp->media = g_slist_reverse(qp->media);
}
/* Check for qargs.media */
static void _chk_media(lua_State *l, _quvi_playlist_t qp,
const gchar *script_path)
{
lua_pushstring(l, PS_MEDIA);
lua_gettable(l, LI_KEY);
if (lua_istable(l, LI_VALUE))
_foreach_media(l, qp, script_path);
else
{
g_warning("%s: %s: should return a dictionary containing "
"the `qargs.%s' dictionary",
script_path, script_func, PS_MEDIA);
}
lua_pop(l, 1);
}
static void _chk_optional(lua_State *l, _quvi_playlist_t qp)
{
lua_pushnil(l);
while (lua_next(l, LI_KEY))
{
l_chk_assign_s(l, PS_THUMB_URL, qp->url.thumbnail, TRUE, TRUE);
l_chk_assign_s(l, PS_ID, qp->id.playlist, TRUE, FALSE);
l_chk_assign_s(l, PS_TITLE, qp->title, TRUE, FALSE);
lua_pop(l, 1);
}
}
extern gint c_reset(_quvi_t);
QuviError l_exec_playlist_script_parse(gpointer p, GSList *sl)
{
_quvi_playlist_t qp;
_quvi_script_t qs;
lua_State *l;
qp = (_quvi_playlist_t) p;
l = qp->handle.quvi->handle.lua;
c_reset(qp->handle.quvi);
qs = (_quvi_script_t) sl->data;
lua_getglobal(l, script_func);
if (!lua_isfunction(l, -1))
{
luaL_error(l, "%s: the function `%s' was not found",
qs->fpath->str, script_func);
}
lua_newtable(l);
l_set_reg_userdata(l, USERDATA_QUVI_T, (gpointer) qp->handle.quvi);
l_setfield_s(l, PS_INPUT_URL, qp->url.input->str, -1);
if (lua_pcall(l, 1, 1, 0))
{
g_string_assign(qp->handle.quvi->status.errmsg, lua_tostring(l, -1));
return (QUVI_ERROR_SCRIPT);
}
if (!lua_istable(l, -1))
{
static const gchar *_E =
"%s: %s: must return a dictionary, this is typically the `qargs'";
luaL_error(l, _E, qs->fpath->str, script_func);
}
_chk_optional(l, qp);
_chk_media(l, qp, qs->fpath->str);
lua_pop(l, 1);
return (QUVI_OK);
}
/* vim: set ts=2 sw=2 tw=72 expandtab: */