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#include <lighttpd/core_lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include <sys/stat.h>
#define LUA_CHUNK "liChunk*"
#define LUA_CHUNKQUEUE "liChunkQueue*"
static void init_chunk_mt(lua_State *L) {
/* TODO */
}
typedef int (*lua_ChunkQueue_Attrib)(liChunkQueue *cq, lua_State *L);
static int lua_chunkqueue_attr_read_is_closed(liChunkQueue *cq, lua_State *L) {
lua_pushboolean(L, cq->is_closed);
return 1;
}
static int lua_chunkqueue_attr_write_is_closed(liChunkQueue *cq, lua_State *L) {
cq->is_closed = lua_toboolean(L, 3);
return 0;
}
#define AR(m) { #m, lua_chunkqueue_attr_read_##m, NULL }
#define AW(m) { #m, NULL, lua_chunkqueue_attr_write_##m }
#define ARW(m) { #m, lua_chunkqueue_attr_read_##m, lua_chunkqueue_attr_write_##m }
static const struct {
const char* key;
lua_ChunkQueue_Attrib read_attr, write_attr;
} chunkqueue_attribs[] = {
ARW(is_closed),
{ NULL, NULL, NULL }
};
static int lua_chunkqueue_index(lua_State *L) {
liChunkQueue *cq;
const char *key;
int i;
if (lua_gettop(L) != 2) {
lua_pushstring(L, "incorrect number of arguments");
lua_error(L);
}
if (li_lua_metatable_index(L)) return 1;
cq = li_lua_get_chunkqueue(L, 1);
if (!cq) return 0;
if (lua_isnumber(L, 2)) return 0;
if (!lua_isstring(L, 2)) return 0;
key = lua_tostring(L, 2);
for (i = 0; chunkqueue_attribs[i].key ; i++) {
if (0 == strcmp(key, chunkqueue_attribs[i].key)) {
if (chunkqueue_attribs[i].read_attr)
return chunkqueue_attribs[i].read_attr(cq, L);
break;
}
}
lua_pushstring(L, "cannot read attribute ");
lua_pushstring(L, key);
lua_pushstring(L, " in chunkqueue");
lua_concat(L, 3);
lua_error(L);
return 0;
}
static int lua_chunkqueue_newindex(lua_State *L) {
liChunkQueue *cq;
const char *key;
int i;
if (lua_gettop(L) != 3) {
lua_pushstring(L, "incorrect number of arguments");
lua_error(L);
}
cq = li_lua_get_chunkqueue(L, 1);
if (!cq) return 0;
if (lua_isnumber(L, 2)) return 0;
if (!lua_isstring(L, 2)) return 0;
key = lua_tostring(L, 2);
for (i = 0; chunkqueue_attribs[i].key ; i++) {
if (0 == strcmp(key, chunkqueue_attribs[i].key)) {
if (chunkqueue_attribs[i].write_attr)
return chunkqueue_attribs[i].write_attr(cq, L);
break;
}
}
lua_pushstring(L, "cannot write attribute ");
lua_pushstring(L, key);
lua_pushstring(L, "in chunkqueue");
lua_concat(L, 3);
lua_error(L);
return 0;
}
static int lua_chunkqueue_add(lua_State *L) {
liChunkQueue *cq;
const char *s;
size_t len;
luaL_checkany(L, 2);
cq = li_lua_get_chunkqueue(L, 1);
if (cq == NULL) return 0;
if (!lua_isstring(L, 2)) {
lua_pushliteral(L, "chunkqueue add expects simple string");
lua_error(L);
return -1;
}
s = lua_tolstring(L, 2, &len);
li_chunkqueue_append_mem(cq, s, len);
return 0;
}
static int _lua_chunkqueue_add_file(lua_State *L, gboolean tempfile) {
liChunkQueue *cq;
const char *filename;
GString g_filename;
size_t len;
struct stat st;
int fd, err;
goffset start, length;
luaL_checkany(L, 2);
cq = li_lua_get_chunkqueue(L, 1);
if (cq == NULL) return 0;
if (!lua_isstring(L, 2)) {
lua_pushliteral(L, "chunkqueue:add expects filename as first parameter");
lua_error(L);
return -1;
}
filename = lua_tolstring(L, 2, &len);
g_filename = li_const_gstring(filename, len);
if (LI_HANDLER_GO_ON != li_stat_cache_get_sync(NULL, &g_filename, &st, &err, &fd)) {
lua_pushliteral(L, "chunkqueue:add couldn't open file: ");
lua_pushvalue(L, 2);
lua_concat(L, 2);
lua_error(L);
return -1;
}
start = 0;
length = st.st_size;
if (lua_gettop(L) >= 3) {
if (!lua_isnumber(L, 3)) {
lua_pushliteral(L, "chunkqueue:add expects number (or nothing) as second parameter");
lua_error(L);
close(fd);
return -1;
}
start = lua_tonumber(L, 3);
}
if (lua_gettop(L) >= 4) {
if (!lua_isnumber(L, 4)) {
lua_pushliteral(L, "chunkqueue:add expects number (or nothing) as third parameter");
lua_error(L);
close(fd);
return -1;
}
length = lua_tonumber(L, 3);
}
if (start < 0 || start >= st.st_size || length < 0 || start + length > st.st_size) {
lua_pushliteral(L, "chunkqueue:add: Invalid start/length values");
lua_error(L);
close(fd);
return -1;
}
if (tempfile) {
li_chunkqueue_append_tempfile_fd(cq, g_string_new_len(filename, len), start, length, fd);
} else {
li_chunkqueue_append_file_fd(cq, NULL, start, length, fd);
}
return 0;
}
static int lua_chunkqueue_add_file(lua_State *L) {
return _lua_chunkqueue_add_file(L, FALSE);
}
static int lua_chunkqueue_add_temp_file(lua_State *L) {
return _lua_chunkqueue_add_file(L, TRUE);
}
static int lua_chunkqueue_reset(lua_State *L) {
liChunkQueue *cq;
cq = li_lua_get_chunkqueue(L, 1);
li_chunkqueue_reset(cq);
return 0;
}
static int lua_chunkqueue_steal_all(lua_State *L) {
liChunkQueue *cq, *cq_from;
cq = li_lua_get_chunkqueue(L, 1);
cq_from = li_lua_get_chunkqueue(L, 2);
if (!cq_from) {
lua_pushliteral(L, "Expected source chunkqueue to steal from");
return lua_error(L);
}
li_chunkqueue_steal_all(cq, cq_from);
return 0;
}
static int lua_chunkqueue_skip_all(lua_State *L) {
liChunkQueue *cq;
cq = li_lua_get_chunkqueue(L, 1);
li_chunkqueue_skip_all(cq);
return 0;
}
static const luaL_Reg chunkqueue_mt[] = {
{ "__index", lua_chunkqueue_index },
{ "__newindex", lua_chunkqueue_newindex },
{ "add", lua_chunkqueue_add },
{ "add_file", lua_chunkqueue_add_file },
{ "add_temp_file", lua_chunkqueue_add_temp_file },
{ "reset", lua_chunkqueue_reset },
{ "steal_all", lua_chunkqueue_steal_all },
{ "skip_all", lua_chunkqueue_skip_all },
{ NULL, NULL }
};
static void init_chunkqueue_mt(lua_State *L) {
luaL_register(L, NULL, chunkqueue_mt);
}
void li_lua_init_chunk_mt(lua_State *L) {
if (luaL_newmetatable(L, LUA_CHUNK)) {
init_chunk_mt(L);
}
lua_pop(L, 1);
if (luaL_newmetatable(L, LUA_CHUNKQUEUE)) {
init_chunkqueue_mt(L);
}
lua_pop(L, 1);
}
liChunk* li_lua_get_chunk(lua_State *L, int ndx) {
if (!lua_isuserdata(L, ndx)) return NULL;
if (!lua_getmetatable(L, ndx)) return NULL;
luaL_getmetatable(L, LUA_CHUNK);
if (lua_isnil(L, -1) || lua_isnil(L, -2) || !lua_equal(L, -1, -2)) {
lua_pop(L, 2);
return NULL;
}
lua_pop(L, 2);
return *(liChunk**) lua_touserdata(L, ndx);
}
int li_lua_push_chunk(lua_State *L, liChunk *c) {
liChunk **pc;
if (NULL == c) {
lua_pushnil(L);
return 1;
}
pc = (liChunk**) lua_newuserdata(L, sizeof(liChunk*));
*pc = c;
if (luaL_newmetatable(L, LUA_CHUNK)) {
init_chunk_mt(L);
}
lua_setmetatable(L, -2);
return 1;
}
liChunkQueue* li_lua_get_chunkqueue(lua_State *L, int ndx) {
if (!lua_isuserdata(L, ndx)) return NULL;
if (!lua_getmetatable(L, ndx)) return NULL;
luaL_getmetatable(L, LUA_CHUNKQUEUE);
if (lua_isnil(L, -1) || lua_isnil(L, -2) || !lua_equal(L, -1, -2)) {
lua_pop(L, 2);
return NULL;
}
lua_pop(L, 2);
return *(liChunkQueue**) lua_touserdata(L, ndx);
}
int li_lua_push_chunkqueue(lua_State *L, liChunkQueue *cq) {
liChunkQueue **pcq;
if (NULL == cq) {
lua_pushnil(L);
return 1;
}
pcq = (liChunkQueue**) lua_newuserdata(L, sizeof(liChunkQueue*));
*pcq = cq;
if (luaL_newmetatable(L, LUA_CHUNKQUEUE)) {
init_chunkqueue_mt(L);
}
lua_setmetatable(L, -2);
return 1;
}