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mk_lua_util.c
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/
mk_lua_util.c
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Monkey HTTP Server
* ==================
* Copyright 2001-2014 Monkey Software LLC <eduardo@monkey.io>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mk_lua.h"
/* parse url encoded strings into two tables and pushes them into the
stack */
void mk_lua_urlencoded_to_table(lua_State *L, char *qs)
{
char *key;
char *value;
char *strtok_state;
int t;
key = strtok_r(qs, "&", &strtok_state);
while (key) {
value = strchr(key, '=');
if (value) {
*value = '\0'; /* Split the string in two */
value++; /* Skip passed the = */
}
else {
value = "1";
}
/*
store the key and values into tables
*/
lua_getfield(L, -1, key); /* [VALUE, table<s,t>, table<s,s>] */
/* borrowed from apache mod_lua */
t = lua_type(L, -1);
switch (t) {
case LUA_TNIL:
case LUA_TNONE:{
lua_pop(L, 1); /* [table<s,t>, table<s,s>] */
lua_newtable(L); /* [array, table<s,t>, table<s,s>] */
lua_pushnumber(L, 1); /* [1, array, table<s,t>, table<s,s>] */
lua_pushstring(L, value); /* [string, 1, array, table<s,t>, table<s,s>] */
lua_settable(L, -3); /* [array, table<s,t>, table<s,s>] */
lua_setfield(L, -2, key); /* [table<s,t>, table<s,s>] */
break;
}
case LUA_TTABLE:{
/* [array, table<s,t>, table<s,s>] */
int size = lua_rawlen(L, -1);
lua_pushnumber(L, size + 1); /* [#, array, table<s,t>, table<s,s>] */
lua_pushstring(L, value); /* [string, #, array, table<s,t>, table<s,s>] */
lua_settable(L, -3); /* [array, table<s,t>, table<s,s>] */
lua_setfield(L, -2, key); /* [table<s,t>, table<s,s>] */
break;
}
}
/* L is [table<s,t>, table<s,s>] */
/* build simple */
lua_getfield(L, -2, key); /* [VALUE, table<s,s>, table<s,t>] */
if (lua_isnoneornil(L, -1)) { /* only set if not already set */
lua_pop(L, 1); /* [table<s,s>, table<s,t>]] */
lua_pushstring(L, value); /* [string, table<s,s>, table<s,t>] */
lua_setfield(L, -3, key); /* [table<s,s>, table<s,t>] */
}
else {
lua_pop(L, 1);
}
key = strtok_r(NULL, "&", &strtok_state);
}
}