static int io_popen (lua_State *L) {
const char *filename = luaL_checkstring(L, 1);
const char *mode = luaL_optstring(L, 2, "r");
int *pf = newfile(L);
*pf = lua_popen(L, filename, fs_mode2flag(mode));
return (*pf == FS_OPEN_OK - 1) ? pushresult(L, 0, filename) : 1;
}
// Lua: compile(filename) -- compile lua file into lua bytecode, and save to .lc
static int node_compile( lua_State* L )
{
Proto* f;
int file_fd = FS_OPEN_OK - 1;
size_t len;
const char *fname = luaL_checklstring( L, 1, &len );
if ( len > FS_NAME_MAX_LENGTH )
return luaL_error(L, "filename too long");
char output[FS_NAME_MAX_LENGTH];
c_strcpy(output, fname);
// check here that filename end with ".lua".
if (len < 4 || (c_strcmp( output + len - 4, ".lua") != 0) )
return luaL_error(L, "not a .lua file");
output[c_strlen(output) - 2] = 'c';
output[c_strlen(output) - 1] = '\0';
NODE_DBG(output);
NODE_DBG("\n");
if (luaL_loadfsfile(L, fname) != 0) {
return luaL_error(L, lua_tostring(L, -1));
}
f = toproto(L, -1);
int stripping = 1; /* strip debug information? */
file_fd = fs_open(output, fs_mode2flag("w+"));
if (file_fd < FS_OPEN_OK)
{
return luaL_error(L, "cannot open/write to file");
}
lua_lock(L);
int result = luaU_dump(L, f, writer, &file_fd, stripping);
lua_unlock(L);
if (fs_flush(file_fd) < 0) { // result codes aren't propagated by flash_fs.h
// overwrite Lua error, like writer() does in case of a file io error
result = 1;
}
fs_close(file_fd);
file_fd = FS_OPEN_OK - 1;
if (result == LUA_ERR_CC_INTOVERFLOW) {
return luaL_error(L, "value too big or small for target integer type");
}
if (result == LUA_ERR_CC_NOTINTEGER) {
return luaL_error(L, "target lua_Number is integral but fractional value found");
}
if (result == 1) { // result status generated by writer() or fs_flush() fail
return luaL_error(L, "writing to file failed");
}
return 0;
}
static int g_iofile (lua_State *L, int f, const char *mode) {
if (!lua_isnoneornil(L, 1)) {
const char *filename = lua_tostring(L, 1);
if (filename) {
int *pf = newfile(L);
*pf = fs_open(filename, fs_mode2flag(mode));
if (*pf == FS_OPEN_OK - 1)
fileerror(L, 1, filename);
}
else {
tofile(L); /* check that it's a valid file handle */
lua_pushvalue(L, 1);
}
LUA_IO_SETFIELD(f);
}
/* return current value */
LUA_IO_GETFIELD(f);
return 1;
}
// Lua: open(filename, mode)
static int file_open( lua_State* L )
{
size_t len;
if((FS_OPEN_OK - 1)!=file_fd){
fs_close(file_fd);
file_fd = FS_OPEN_OK - 1;
}
const char *fname = luaL_checklstring( L, 1, &len );
if( len > FS_NAME_MAX_LENGTH )
return luaL_error(L, "filename too long");
const char *mode = luaL_optstring(L, 2, "r");
file_fd = fs_open(fname, fs_mode2flag(mode));
if(file_fd < FS_OPEN_OK){
file_fd = FS_OPEN_OK - 1;
lua_pushnil(L);
} else {
lua_pushboolean(L, 1);
}
return 1;
}
