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readblock support var size

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云风
2012-09-06 18:14:59 +08:00
parent 0cb0232690
commit 58b4bb384f
1 changed files with 26 additions and 12 deletions
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38
connection/lua-socket.c
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@@ -231,6 +231,7 @@ _readline(lua_State *L) {
/*
userdata buffer
intteger header
function (msg, sz, ...)
...
*/
@@ -243,27 +244,40 @@ _readblock(lua_State *L) {
if (size < 2) {
return 0;
}
int header_size = luaL_checkinteger(L,2);
uint8_t * buf = (uint8_t *)buffer->buffer + buffer->read;
uint16_t len = buf[0] << 8 | buf[1];
if (size < 2 + len) {
uint16_t len;
if (header_size == 2) {
len = buf[0] << 8 | buf[1];
} else {
if (header_size != 4) {
return luaL_error(L, "header size must be 2 or 4");
}
len = buf[0] << 24 | buf[1] << 16 | buf[2] << 8 | buf[3];
}
if (size < header_size + len) {
return 0;
}
if (top == 2) {
lua_pushlightuserdata(L, buffer->buffer + buffer->read + 2);
if (top == 3) {
lua_pushlightuserdata(L, buffer->buffer + buffer->read + header_size);
lua_pushinteger(L, len);
lua_call(L,2,LUA_MULTRET);
buffer->read += len + header_size;
return lua_gettop(L) - 2;
} else {
lua_pushlightuserdata(L, buffer->buffer + buffer->read + 2);
lua_insert(L,3);
lua_pushvalue(L,3);
lua_replace(L,1);
lua_pushlightuserdata(L, buffer->buffer + buffer->read + header_size);
lua_replace(L,2);
lua_pushinteger(L, len);
lua_insert(L,4);
lua_call(L,top,LUA_MULTRET);
lua_replace(L,3);
lua_call(L,top-1,LUA_MULTRET);
buffer->read += len + header_size;
return lua_gettop(L);
}
buffer->read += len + 2;
return lua_gettop(L) - 1;
}
int