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/*
** Lua eXtended system library
*/
#define lxsyslib_c
#define LUA_LIB
#include <lua/lprefix.h>
#include <errno.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <lua/lua.h>
#include <lua/lauxlib.h>
#include <lua/lualib.h>
#include "lxlib.h"
static void setintfield (lua_State *L, const char *key, int value) {
lua_pushinteger(L, value);
lua_setfield(L, -2, key);
}
static void setstrfield (lua_State *L, const char *key, const char* value) {
lua_pushstring(L, value);
lua_setfield(L, -2, key);
}
static int sys_dbg_print(lua_State *L) {
const char *str = luaL_checkstring(L, 1);
sc_dbg_print(str);
return 0;
}
static int sys_yield(lua_State *L) {
sc_yield();
return 0;
}
static int sys_exit(lua_State *L) {
int code = luaL_checkinteger(L, 1);
sc_exit(code);
return 0;
}
static int sys_usleep(lua_State *L) {
int usecs = luaL_checkinteger(L, 1);
sc_usleep(usecs);
return 0;
}
/*
Missing syscalls :
- sys_new_thread, exit_thread -> into specific threading library
- mmap, mmap_file, mchmap, munmap -> into specific memory-related library ??
*/
static int sys_create(lua_State *L) {
const char *name = luaL_checkstring(L, 1);
int type = luaL_checkinteger(L, 2);
lua_pushboolean(L, sc_create(name, type));
return 1;
}
static int sys_delete(lua_State *L) {
const char *name = luaL_checkstring(L, 1);
lua_pushboolean(L, sc_delete(name));
return 1;
}
static int sys_move(lua_State *L) {
const char *oldname = luaL_checkstring(L, 1);
const char *newname = luaL_checkstring(L, 2);
lua_pushboolean(L, sc_move(oldname, newname));
return 1;
}
static int sys_stat(lua_State *L) {
const char* name = luaL_checkstring(L, 1);
stat_t s;
if (sc_stat(name, &s)) {
lua_createtable(L, 0, 3);
setintfield(L, "type", s.type);
setintfield(L, "access", s.access);
setintfield(L, "size", s.size);
} else {
lua_pushnil(L);
}
return 1;
}
static int sys_open(lua_State *L) {
const char* name = luaL_checkstring(L, 1);
int mode = luaL_checkinteger(L, 2);
fd_t fh = sc_open(name, mode);
if (fh) {
lua_pushinteger(L, fh);
} else {
lua_pushnil(L);
}
return 1;
}
static int sys_close(lua_State *L) {
int fd = luaL_checkinteger(L, 1);
sc_close(fd);
return 0;
}
static int sys_read(lua_State *L) {
int fd = luaL_checkinteger(L, 1);
int offset = luaL_checkinteger(L, 2);
int len = luaL_checkinteger(L, 3);
luaL_Buffer b;
char* bufptr = luaL_buffinitsize(L, &b, len);
int ret = sc_read(fd, offset, len, bufptr);
luaL_pushresultsize(&b, ret);
lua_pushinteger(L, ret);
return 2;
}
static int sys_write(lua_State *L) {
int fd = luaL_checkinteger(L, 1);
int offset = luaL_checkinteger(L, 2);
const char* str = luaL_checkstring(L, 3);
int len = luaL_len(L, 3);
int ret = sc_write(fd, offset, len, str);
lua_pushinteger(L, ret);
return 1;
}
static int sys_readdir(lua_State *L) {
int fd = luaL_checkinteger(L, 1);
int ent_no = luaL_checkinteger(L, 2);
dirent_t d;
bool ret = sc_readdir(fd, ent_no, &d);
if (ret) {
lua_createtable(L, 0, 4);
setstrfield(L, "name", d.name);
setintfield(L, "type", d.st.type);
setintfield(L, "access", d.st.access);
setintfield(L, "size", d.st.size);
} else {
lua_pushnil(L);
}
return 1;
}
static int sys_stat_open(lua_State *L) {
int fd = luaL_checkinteger(L, 1);
stat_t s;
if (sc_stat_open(fd, &s)) {
lua_createtable(L, 0, 3);
setintfield(L, "type", s.type);
setintfield(L, "access", s.access);
setintfield(L, "size", s.size);
} else {
lua_pushnil(L);
}
return 1;
}
static int sys_ioctl(lua_State *L) {
// TODO
return 0;
}
static int sys_fctl(lua_State *L) {
// TODO
return 0;
}
static int sys_select(lua_State *L) {
// TODO
return 0;
}
static const luaL_Reg syslib[] = {
{"dbg_print", sys_dbg_print},
{"yield", sys_yield},
{"exit", sys_exit},
{"usleep", sys_usleep},
{"create", sys_create},
{"delete", sys_delete},
{"move", sys_move},
{"stat", sys_stat},
{"open", sys_open},
{"close", sys_close},
{"read", sys_read},
{"write", sys_write},
{"readdir", sys_readdir},
{"stat_open", sys_stat_open},
{NULL, NULL}
};
/* }====================================================== */
LUAMOD_API int lx_open_sys (lua_State *L) {
luaL_newlib(L, syslib);
return 1;
}
/* vim: set sts=2 ts=2 sw=2 tw=0 et :*/
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