/* libquvi
* Copyright (C) 2012 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_scan_s.h"
#include "_quvi_script_s.h"
/* -- */
#include "lua/setfield.h"
#include "lua/def.h"
static const gchar script_func[] = "parse";
static void _foreach_media_url(lua_State *l, _quvi_scan_t qs,
const gchar *script_path)
{
lua_pushnil(l);
while (lua_next(l, LI_KEY))
{
if (lua_isstring(l, LI_KEY) && lua_isstring(l, LI_VALUE))
{
const gchar *url = lua_tostring(l, LI_VALUE);
qs->url.media = g_slist_prepend(qs->url.media, g_strdup(url));
}
lua_pop(l, 1);
}
qs->url.media = g_slist_reverse(qs->url.media);
}
/* Check for 'qargs.media_url'. */
static void _chk_media_url(lua_State *l, _quvi_scan_t qs,
const gchar *script_path)
{
lua_pushstring(l, SS_MEDIA_URL);
lua_gettable(l, LI_KEY);
if (lua_istable(l, LI_VALUE))
_foreach_media_url(l, qs, script_path);
else
{
g_warning("%s: %s: should return a dictionary containing "
"the `qargs.%s'",
script_path, script_func, SS_MEDIA_URL);
}
lua_pop(l, 1);
}
QuviError l_exec_scan_script_parse(gpointer p, gpointer _qss,
const gchar *data)
{
_quvi_script_t qss;
_quvi_scan_t qs;
lua_State *l;
qss = (_quvi_script_t) _qss;
qs = (_quvi_scan_t) p;
l = qs->handle.quvi->handle.lua;
lua_pushnil(l);
if (luaL_dofile(l, qss->fpath->str))
luaL_error(l, "%s", lua_tostring(l, -1));
lua_getglobal(l, script_func);
if (!lua_isfunction(l, -1))
{
luaL_error(l, "%s: the function `%s' was not found",
qss->fpath->str, script_func);
}
lua_newtable(l);
l_set_reg_userdata(l, USERDATA_QUVI_T, (gpointer) qs->handle.quvi);
l_setfield_s(l, SS_INPUT_URL, qs->url.input->str, -1);
l_setfield_s(l, SS_CONTENT, data, -1);
if (lua_pcall(l, 1, 1, 0))
{
g_string_assign(qs->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, qss->fpath->str, script_func);
}
_chk_media_url(l, qs, qss->fpath->str);
lua_pop(l, 1);
return (QUVI_OK);
}
/* vim: set ts=2 sw=2 tw=72 expandtab: */