645 lines
15 KiB
C
645 lines
15 KiB
C
// Module for interfacing with file system
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#include "module.h"
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#include "lauxlib.h"
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#include "lmem.h"
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#include "platform.h"
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#include "c_types.h"
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#include "vfs.h"
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#include "c_string.h"
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#include <alloca.h>
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#define FILE_READ_CHUNK 1024
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// use this time/date in absence of a timestamp
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#define FILE_TIMEDEF_YEAR 1970
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#define FILE_TIMEDEF_MON 01
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#define FILE_TIMEDEF_DAY 01
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#define FILE_TIMEDEF_HOUR 00
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#define FILE_TIMEDEF_MIN 00
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#define FILE_TIMEDEF_SEC 00
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static int file_fd = 0;
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static int file_fd_ref = LUA_NOREF;
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static int rtc_cb_ref = LUA_NOREF;
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typedef struct _file_fd_ud {
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int fd;
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} file_fd_ud;
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static void table2tm( lua_State *L, vfs_time *tm )
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{
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int idx = lua_gettop( L );
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// extract items from table
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lua_getfield( L, idx, "year" );
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lua_getfield( L, idx, "mon" );
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lua_getfield( L, idx, "day" );
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lua_getfield( L, idx, "hour" );
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lua_getfield( L, idx, "min" );
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lua_getfield( L, idx, "sec" );
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tm->year = luaL_optint( L, ++idx, FILE_TIMEDEF_YEAR );
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tm->mon = luaL_optint( L, ++idx, FILE_TIMEDEF_MON );
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tm->day = luaL_optint( L, ++idx, FILE_TIMEDEF_DAY );
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tm->hour = luaL_optint( L, ++idx, FILE_TIMEDEF_HOUR );
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tm->min = luaL_optint( L, ++idx, FILE_TIMEDEF_MIN );
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tm->sec = luaL_optint( L, ++idx, FILE_TIMEDEF_SEC );
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// remove items from stack
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lua_pop( L, 6 );
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}
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static sint32_t file_rtc_cb( vfs_time *tm )
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{
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sint32_t res = VFS_RES_ERR;
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if (rtc_cb_ref != LUA_NOREF) {
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lua_State *L = lua_getstate();
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lua_rawgeti( L, LUA_REGISTRYINDEX, rtc_cb_ref );
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lua_call( L, 0, 1 );
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if (lua_type( L, lua_gettop( L ) ) == LUA_TTABLE) {
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table2tm( L, tm );
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res = VFS_RES_OK;
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}
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// pop item returned by callback
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lua_pop( L, 1 );
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}
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return res;
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}
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// Lua: on()
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static int file_on(lua_State *L)
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{
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enum events{
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ON_RTC = 0
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};
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const char *const eventnames[] = {"rtc", NULL};
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int event = luaL_checkoption(L, 1, "rtc", eventnames);
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switch (event) {
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case ON_RTC:
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luaL_unref(L, LUA_REGISTRYINDEX, rtc_cb_ref);
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if ((lua_type(L, 2) == LUA_TFUNCTION) ||
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(lua_type(L, 2) == LUA_TLIGHTFUNCTION)) {
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lua_pushvalue(L, 2); // copy argument (func) to the top of stack
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rtc_cb_ref = luaL_ref(L, LUA_REGISTRYINDEX);
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vfs_register_rtc_cb(file_rtc_cb);
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} else {
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rtc_cb_ref = LUA_NOREF;
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vfs_register_rtc_cb(NULL);
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}
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break;
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default:
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break;
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}
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return 0;
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}
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// Lua: close()
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static int file_close( lua_State* L )
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{
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int need_pop = FALSE;
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file_fd_ud *ud;
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if (lua_type( L, 1 ) != LUA_TUSERDATA) {
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// fall back to last opened file
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if (file_fd_ref != LUA_NOREF) {
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lua_rawgeti( L, LUA_REGISTRYINDEX, file_fd_ref );
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// top of stack is now default file descriptor
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ud = (file_fd_ud *)luaL_checkudata(L, -1, "file.obj");
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lua_pop( L, 1 );
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} else {
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// no default file currently opened
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return 0;
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}
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} else {
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ud = (file_fd_ud *)luaL_checkudata(L, 1, "file.obj");
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}
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// unref default file descriptor
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luaL_unref( L, LUA_REGISTRYINDEX, file_fd_ref );
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file_fd_ref = LUA_NOREF;
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if(ud->fd){
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vfs_close(ud->fd);
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// mark as closed
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ud->fd = 0;
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}
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return 0;
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}
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static int file_obj_free( lua_State *L )
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{
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file_fd_ud *ud = (file_fd_ud *)luaL_checkudata(L, 1, "file.obj");
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if (ud->fd) {
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// close file if it's still open
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vfs_close(ud->fd);
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ud->fd = 0;
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}
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return 0;
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}
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// Lua: format()
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static int file_format( lua_State* L )
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{
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size_t len;
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file_close(L);
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if( !vfs_format() )
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{
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NODE_ERR( "\n*** ERROR ***: unable to format. FS might be compromised.\n" );
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NODE_ERR( "It is advised to re-flash the NodeMCU image.\n" );
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luaL_error(L, "Failed to format file system");
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}
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else{
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NODE_ERR( "format done.\n" );
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}
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return 0;
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}
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static int file_fscfg (lua_State *L)
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{
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uint32_t phys_addr, phys_size;
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vfs_fscfg("/FLASH", &phys_addr, &phys_size);
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lua_pushinteger (L, phys_addr);
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lua_pushinteger (L, phys_size);
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return 2;
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}
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// Lua: open(filename, mode)
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static int file_open( lua_State* L )
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{
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size_t len;
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// unref last file descriptor to allow gc'ing if not kept by user script
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luaL_unref( L, LUA_REGISTRYINDEX, file_fd_ref );
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file_fd_ref = LUA_NOREF;
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const char *fname = luaL_checklstring( L, 1, &len );
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const char *basename = vfs_basename( fname );
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luaL_argcheck(L, c_strlen(basename) <= FS_OBJ_NAME_LEN && c_strlen(fname) == len, 1, "filename invalid");
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const char *mode = luaL_optstring(L, 2, "r");
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file_fd = vfs_open(fname, mode);
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if(!file_fd){
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lua_pushnil(L);
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} else {
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file_fd_ud *ud = (file_fd_ud *) lua_newuserdata( L, sizeof( file_fd_ud ) );
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ud->fd = file_fd;
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luaL_getmetatable( L, "file.obj" );
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lua_setmetatable( L, -2 );
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// store reference to opened file
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lua_pushvalue( L, -1 );
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file_fd_ref = luaL_ref( L, LUA_REGISTRYINDEX );
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}
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return 1;
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}
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// Lua: list()
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static int file_list( lua_State* L )
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{
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vfs_dir *dir;
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if (dir = vfs_opendir("")) {
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lua_newtable( L );
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struct vfs_stat stat;
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while (vfs_readdir(dir, &stat) == VFS_RES_OK) {
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lua_pushinteger(L, stat.size);
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lua_setfield(L, -2, stat.name);
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}
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vfs_closedir(dir);
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return 1;
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}
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return 0;
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}
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static int get_file_obj( lua_State *L, int *argpos )
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{
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if (lua_type( L, 1 ) == LUA_TUSERDATA) {
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file_fd_ud *ud = (file_fd_ud *)luaL_checkudata(L, 1, "file.obj");
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*argpos = 2;
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return ud->fd;
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} else {
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*argpos = 1;
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return file_fd;
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}
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}
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#define GET_FILE_OBJ int argpos; \
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int fd = get_file_obj( L, &argpos );
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static int file_seek (lua_State *L)
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{
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GET_FILE_OBJ;
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static const int mode[] = {VFS_SEEK_SET, VFS_SEEK_CUR, VFS_SEEK_END};
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static const char *const modenames[] = {"set", "cur", "end", NULL};
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if(!fd)
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return luaL_error(L, "open a file first");
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int op = luaL_checkoption(L, argpos, "cur", modenames);
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long offset = luaL_optlong(L, ++argpos, 0);
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op = vfs_lseek(fd, offset, mode[op]);
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if (op < 0)
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lua_pushnil(L); /* error */
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else
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lua_pushinteger(L, vfs_tell(fd));
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return 1;
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}
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// Lua: exists(filename)
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static int file_exists( lua_State* L )
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{
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size_t len;
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const char *fname = luaL_checklstring( L, 1, &len );
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const char *basename = vfs_basename( fname );
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luaL_argcheck(L, c_strlen(basename) <= FS_OBJ_NAME_LEN && c_strlen(fname) == len, 1, "filename invalid");
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struct vfs_stat stat;
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lua_pushboolean(L, vfs_stat((char *)fname, &stat) == VFS_RES_OK ? 1 : 0);
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return 1;
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}
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// Lua: remove(filename)
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static int file_remove( lua_State* L )
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{
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size_t len;
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const char *fname = luaL_checklstring( L, 1, &len );
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const char *basename = vfs_basename( fname );
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luaL_argcheck(L, c_strlen(basename) <= FS_OBJ_NAME_LEN && c_strlen(fname) == len, 1, "filename invalid");
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vfs_remove((char *)fname);
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return 0;
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}
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// Lua: flush()
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static int file_flush( lua_State* L )
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{
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GET_FILE_OBJ;
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if(!fd)
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return luaL_error(L, "open a file first");
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if(vfs_flush(fd) == 0)
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lua_pushboolean(L, 1);
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else
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lua_pushnil(L);
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return 1;
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}
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// Lua: rename("oldname", "newname")
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static int file_rename( lua_State* L )
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{
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size_t len;
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const char *oldname = luaL_checklstring( L, 1, &len );
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const char *basename = vfs_basename( oldname );
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luaL_argcheck(L, c_strlen(basename) <= FS_OBJ_NAME_LEN && c_strlen(oldname) == len, 1, "filename invalid");
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const char *newname = luaL_checklstring( L, 2, &len );
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basename = vfs_basename( newname );
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luaL_argcheck(L, c_strlen(basename) <= FS_OBJ_NAME_LEN && c_strlen(newname) == len, 2, "filename invalid");
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if(0 <= vfs_rename( oldname, newname )){
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lua_pushboolean(L, 1);
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} else {
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lua_pushboolean(L, 0);
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}
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return 1;
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}
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// Lua: stat(filename)
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static int file_stat( lua_State* L )
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{
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size_t len;
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const char *fname = luaL_checklstring( L, 1, &len );
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luaL_argcheck( L, c_strlen(fname) <= FS_OBJ_NAME_LEN && c_strlen(fname) == len, 1, "filename invalid" );
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struct vfs_stat stat;
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if (vfs_stat( (char *)fname, &stat ) != VFS_RES_OK) {
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lua_pushnil( L );
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return 1;
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}
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lua_createtable( L, 0, 7 );
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lua_pushinteger( L, stat.size );
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lua_setfield( L, -2, "size" );
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lua_pushstring( L, stat.name );
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lua_setfield( L, -2, "name" );
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lua_pushboolean( L, stat.is_dir );
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lua_setfield( L, -2, "is_dir" );
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lua_pushboolean( L, stat.is_rdonly );
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lua_setfield( L, -2, "is_rdonly" );
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lua_pushboolean( L, stat.is_hidden );
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lua_setfield( L, -2, "is_hidden" );
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lua_pushboolean( L, stat.is_sys );
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lua_setfield( L, -2, "is_sys" );
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lua_pushboolean( L, stat.is_arch );
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lua_setfield( L, -2, "is_arch" );
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// time stamp as sub-table
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lua_createtable( L, 0, 6 );
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lua_pushinteger( L, stat.tm_valid ? stat.tm.year : FILE_TIMEDEF_YEAR );
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lua_setfield( L, -2, "year" );
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lua_pushinteger( L, stat.tm_valid ? stat.tm.mon : FILE_TIMEDEF_MON );
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lua_setfield( L, -2, "mon" );
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lua_pushinteger( L, stat.tm_valid ? stat.tm.day : FILE_TIMEDEF_DAY );
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lua_setfield( L, -2, "day" );
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lua_pushinteger( L, stat.tm_valid ? stat.tm.hour : FILE_TIMEDEF_HOUR );
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lua_setfield( L, -2, "hour" );
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lua_pushinteger( L, stat.tm_valid ? stat.tm.min : FILE_TIMEDEF_MIN );
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lua_setfield( L, -2, "min" );
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lua_pushinteger( L, stat.tm_valid ? stat.tm.sec : FILE_TIMEDEF_SEC );
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lua_setfield( L, -2, "sec" );
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lua_setfield( L, -2, "time" );
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return 1;
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}
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// g_read()
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static int file_g_read( lua_State* L, int n, int16_t end_char, int fd )
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{
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static char *heap_mem = NULL;
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// free leftover memory
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if (heap_mem) {
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luaM_free(L, heap_mem);
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heap_mem = NULL;
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}
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if(n <= 0)
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n = FILE_READ_CHUNK;
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if(end_char < 0 || end_char >255)
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end_char = EOF;
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if(!fd)
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return luaL_error(L, "open a file first");
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char *p;
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int i;
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if (n > LUAL_BUFFERSIZE) {
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// get buffer from heap
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p = heap_mem = luaM_malloc(L, n);
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} else {
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// small chunks go onto the stack
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p = alloca(n);
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}
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n = vfs_read(fd, p, n);
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// bypass search if no end character provided
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if (n > 0 && end_char != EOF) {
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for (i = 0; i < n; ++i)
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if (p[i] == end_char)
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{
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++i;
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break;
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}
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} else {
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i = n;
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}
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if (i == 0 || n == VFS_RES_ERR) {
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if (heap_mem) {
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luaM_free(L, heap_mem);
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heap_mem = NULL;
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}
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return 0;
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}
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vfs_lseek(fd, -(n - i), VFS_SEEK_CUR);
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lua_pushlstring(L, p, i);
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if (heap_mem) {
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luaM_free(L, heap_mem);
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heap_mem = NULL;
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}
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return 1;
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}
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// Lua: read()
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// file.read() will read all byte in file
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// file.read(10) will read 10 byte from file, or EOF is reached.
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// file.read('q') will read until 'q' or EOF is reached.
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static int file_read( lua_State* L )
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{
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unsigned need_len = FILE_READ_CHUNK;
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int16_t end_char = EOF;
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size_t el;
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GET_FILE_OBJ;
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if( lua_type( L, argpos ) == LUA_TNUMBER )
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{
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need_len = ( unsigned )luaL_checkinteger( L, argpos );
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}
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else if(lua_isstring(L, argpos))
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{
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const char *end = luaL_checklstring( L, argpos, &el );
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if(el!=1){
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return luaL_error( L, "wrong arg range" );
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}
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end_char = (int16_t)end[0];
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}
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return file_g_read(L, need_len, end_char, fd);
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}
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// Lua: readline()
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static int file_readline( lua_State* L )
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{
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GET_FILE_OBJ;
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return file_g_read(L, LUAL_BUFFERSIZE, '\n', fd);
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}
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// Lua: write("string")
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static int file_write( lua_State* L )
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{
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GET_FILE_OBJ;
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if(!fd)
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return luaL_error(L, "open a file first");
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size_t l, rl;
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const char *s = luaL_checklstring(L, argpos, &l);
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rl = vfs_write(fd, s, l);
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if(rl==l)
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lua_pushboolean(L, 1);
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else
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lua_pushnil(L);
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return 1;
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}
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// Lua: writeline("string")
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static int file_writeline( lua_State* L )
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{
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GET_FILE_OBJ;
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if(!fd)
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return luaL_error(L, "open a file first");
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size_t l, rl;
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const char *s = luaL_checklstring(L, argpos, &l);
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rl = vfs_write(fd, s, l);
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if(rl==l){
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rl = vfs_write(fd, "\n", 1);
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if(rl==1)
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lua_pushboolean(L, 1);
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else
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lua_pushnil(L);
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}
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else{
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lua_pushnil(L);
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}
|
|
return 1;
|
|
}
|
|
|
|
// Lua: fsinfo()
|
|
static int file_fsinfo( lua_State* L )
|
|
{
|
|
u32_t total, used;
|
|
if (vfs_fsinfo("", &total, &used)) {
|
|
return luaL_error(L, "file system failed");
|
|
}
|
|
NODE_DBG("total: %d, used:%d\n", total, used);
|
|
if(total>0x7FFFFFFF || used>0x7FFFFFFF || used > total)
|
|
{
|
|
return luaL_error(L, "file system error");
|
|
}
|
|
lua_pushinteger(L, total-used);
|
|
lua_pushinteger(L, used);
|
|
lua_pushinteger(L, total);
|
|
return 3;
|
|
}
|
|
|
|
typedef struct {
|
|
vfs_vol *vol;
|
|
} volume_type;
|
|
|
|
// Lua: vol = file.mount("/SD0")
|
|
static int file_mount( lua_State *L )
|
|
{
|
|
const char *ldrv = luaL_checkstring( L, 1 );
|
|
int num = luaL_optint( L, 2, -1 );
|
|
volume_type *vol = (volume_type *)lua_newuserdata( L, sizeof( volume_type ) );
|
|
|
|
if (vol->vol = vfs_mount( ldrv, num )) {
|
|
/* set its metatable */
|
|
luaL_getmetatable(L, "vfs.vol");
|
|
lua_setmetatable(L, -2);
|
|
return 1;
|
|
} else {
|
|
// remove created userdata
|
|
lua_pop( L, 1 );
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// Lua: success = file.chdir("/SD0/")
|
|
static int file_chdir( lua_State *L )
|
|
{
|
|
const char *path = luaL_checkstring( L, 1 );
|
|
|
|
lua_pushboolean( L, 0 <= vfs_chdir( path ) );
|
|
return 1;
|
|
}
|
|
|
|
static int file_vol_umount( lua_State *L )
|
|
{
|
|
volume_type *vol = luaL_checkudata( L, 1, "file.vol" );
|
|
luaL_argcheck( L, vol, 1, "volume expected" );
|
|
|
|
lua_pushboolean( L, 0 <= vfs_umount( vol->vol ) );
|
|
|
|
// invalidate vfs descriptor, it has been free'd anyway
|
|
vol->vol = NULL;
|
|
return 1;
|
|
}
|
|
|
|
|
|
static const LUA_REG_TYPE file_obj_map[] =
|
|
{
|
|
{ LSTRKEY( "close" ), LFUNCVAL( file_close ) },
|
|
{ LSTRKEY( "read" ), LFUNCVAL( file_read ) },
|
|
{ LSTRKEY( "readline" ), LFUNCVAL( file_readline ) },
|
|
{ LSTRKEY( "write" ), LFUNCVAL( file_write ) },
|
|
{ LSTRKEY( "writeline" ), LFUNCVAL( file_writeline ) },
|
|
{ LSTRKEY( "seek" ), LFUNCVAL( file_seek ) },
|
|
{ LSTRKEY( "flush" ), LFUNCVAL( file_flush ) },
|
|
{ LSTRKEY( "__gc" ), LFUNCVAL( file_obj_free ) },
|
|
{ LSTRKEY( "__index" ), LROVAL( file_obj_map ) },
|
|
{ LNILKEY, LNILVAL }
|
|
};
|
|
|
|
static const LUA_REG_TYPE file_vol_map[] =
|
|
{
|
|
{ LSTRKEY( "umount" ), LFUNCVAL( file_vol_umount )},
|
|
//{ LSTRKEY( "getfree" ), LFUNCVAL( file_vol_getfree )},
|
|
//{ LSTRKEY( "getlabel" ), LFUNCVAL( file_vol_getlabel )},
|
|
//{ LSTRKEY( "__gc" ), LFUNCVAL( file_vol_free ) },
|
|
{ LSTRKEY( "__index" ), LROVAL( file_vol_map ) },
|
|
{ LNILKEY, LNILVAL }
|
|
};
|
|
|
|
// Module function map
|
|
static const LUA_REG_TYPE file_map[] = {
|
|
{ LSTRKEY( "list" ), LFUNCVAL( file_list ) },
|
|
{ LSTRKEY( "open" ), LFUNCVAL( file_open ) },
|
|
{ LSTRKEY( "close" ), LFUNCVAL( file_close ) },
|
|
{ LSTRKEY( "write" ), LFUNCVAL( file_write ) },
|
|
{ LSTRKEY( "writeline" ), LFUNCVAL( file_writeline ) },
|
|
{ LSTRKEY( "read" ), LFUNCVAL( file_read ) },
|
|
{ LSTRKEY( "readline" ), LFUNCVAL( file_readline ) },
|
|
#ifdef BUILD_SPIFFS
|
|
{ LSTRKEY( "format" ), LFUNCVAL( file_format ) },
|
|
{ LSTRKEY( "fscfg" ), LFUNCVAL( file_fscfg ) },
|
|
#endif
|
|
{ LSTRKEY( "remove" ), LFUNCVAL( file_remove ) },
|
|
{ LSTRKEY( "seek" ), LFUNCVAL( file_seek ) },
|
|
{ LSTRKEY( "flush" ), LFUNCVAL( file_flush ) },
|
|
{ LSTRKEY( "rename" ), LFUNCVAL( file_rename ) },
|
|
{ LSTRKEY( "exists" ), LFUNCVAL( file_exists ) },
|
|
{ LSTRKEY( "fsinfo" ), LFUNCVAL( file_fsinfo ) },
|
|
{ LSTRKEY( "on" ), LFUNCVAL( file_on ) },
|
|
{ LSTRKEY( "stat" ), LFUNCVAL( file_stat ) },
|
|
#ifdef BUILD_FATFS
|
|
{ LSTRKEY( "mount" ), LFUNCVAL( file_mount ) },
|
|
{ LSTRKEY( "chdir" ), LFUNCVAL( file_chdir ) },
|
|
#endif
|
|
{ LNILKEY, LNILVAL }
|
|
};
|
|
|
|
int luaopen_file( lua_State *L ) {
|
|
luaL_rometatable( L, "file.vol", (void *)file_vol_map );
|
|
luaL_rometatable( L, "file.obj", (void *)file_obj_map );
|
|
return 0;
|
|
}
|
|
|
|
NODEMCU_MODULE(FILE, "file", file_map, luaopen_file);
|