151 lines
3.4 KiB
C
151 lines
3.4 KiB
C
/*
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* gluon-web Template - Lua binding
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*
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* Copyright (C) 2009 Jo-Philipp Wich <jow@openwrt.org>
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* Copyright (C) 2018 Matthias Schiffer <mschiffer@universe-factory.net>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "template_parser.h"
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#include "template_utils.h"
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#include "template_lmo.h"
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#include <lualib.h>
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#include <lauxlib.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#define TEMPLATE_CATALOG "gluon.web.template.parser.catalog"
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static int template_L_do_parse(lua_State *L, struct template_parser *parser, const char *chunkname)
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{
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int lua_status, rv;
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if (!parser)
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{
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lua_pushnil(L);
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lua_pushinteger(L, errno);
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lua_pushstring(L, strerror(errno));
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return 3;
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}
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lua_status = lua_load(L, template_reader, parser, chunkname);
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if (lua_status == 0)
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rv = 1;
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else
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rv = template_error(L, parser);
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template_close(parser);
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return rv;
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}
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static int template_L_parse(lua_State *L)
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{
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const char *file = luaL_checkstring(L, 1);
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struct template_parser *parser = template_open(file);
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return template_L_do_parse(L, parser, file);
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}
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static int template_L_parse_string(lua_State *L)
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{
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size_t len;
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const char *str = luaL_checklstring(L, 1, &len);
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struct template_parser *parser = template_string(str, len);
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return template_L_do_parse(L, parser, "[string]");
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}
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static int template_L_pcdata(lua_State *L)
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{
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size_t inlen, outlen;
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char *out;
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const char *in = luaL_checklstring(L, 1, &inlen);
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if (!pcdata(in, inlen, &out, &outlen))
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return 0;
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lua_pushlstring(L, out, outlen);
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free(out);
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return 1;
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}
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static int template_L_load_catalog(lua_State *L)
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{
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const char *file = luaL_checkstring(L, 1);
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lmo_catalog_t *cat = lua_newuserdata(L, sizeof(*cat));
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if (!lmo_load(cat, file)) {
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lua_pop(L, 1);
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return 0;
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}
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luaL_getmetatable(L, TEMPLATE_CATALOG);
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lua_setmetatable(L, -2);
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return 1;
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}
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static int template_catalog_call(lua_State *L)
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{
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size_t inlen, outlen;
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lmo_catalog_t *cat = luaL_checkudata(L, 1, TEMPLATE_CATALOG);
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const char *in = luaL_checklstring(L, 2, &inlen), *out;
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if (!lmo_translate(cat, in, inlen, &out, &outlen))
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return 0;
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lua_pushlstring(L, out, outlen);
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return 1;
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}
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static int template_catalog_gc(lua_State *L)
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{
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lmo_catalog_t *cat = luaL_checkudata(L, 1, TEMPLATE_CATALOG);
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lmo_unload(cat);
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return 0;
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}
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static const luaL_reg R[] = {
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{ "parse", template_L_parse },
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{ "parse_string", template_L_parse_string },
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{ "pcdata", template_L_pcdata },
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{ "load_catalog", template_L_load_catalog },
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{}
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};
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static const luaL_reg template_catalog_methods[] = {
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{ "__call", template_catalog_call },
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{ "__gc", template_catalog_gc },
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{}
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};
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__attribute__ ((visibility("default")))
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LUALIB_API int luaopen_gluon_web_template_parser(lua_State *L) {
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luaL_register(L, "gluon.web.template.parser", R);
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luaL_newmetatable(L, TEMPLATE_CATALOG);
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luaL_register(L, NULL, template_catalog_methods);
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lua_pop(L, 1);
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return 1;
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}
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