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@@ -1,895 +1,895 @@
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-/*
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-** LuaFileSystem
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-** Copyright Kepler Project 2003 (http://www.keplerproject.org/luafilesystem)
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-**
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-** File system manipulation library.
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-** This library offers these functions:
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-** lfs.attributes (filepath [, attributename])
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-** lfs.chdir (path)
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-** lfs.currentdir ()
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-** lfs.dir (path)
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-** lfs.lock (fh, mode)
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-** lfs.lock_dir (path)
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-** lfs.mkdir (path)
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-** lfs.rmdir (path)
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-** lfs.setmode (filepath, mode)
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-** lfs.symlinkattributes (filepath [, attributename]) -- thanks to Sam Roberts
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-** lfs.touch (filepath [, atime [, mtime]])
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-** lfs.unlock (fh)
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-**
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-** $Id: lfs.c,v 1.61 2009/07/04 02:10:16 mascarenhas Exp $
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-*/
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-
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-#ifdef _MSC_VER
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-#ifndef _CRT_SECURE_NO_WARNINGS
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-#define _CRT_SECURE_NO_WARNINGS /* disable Visual Studio compiler warnings for using standard C functions */
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-#endif
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-#endif
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-
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-#ifndef _WIN32
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-#ifndef _AIX
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-#define _FILE_OFFSET_BITS 64 /* Linux, Solaris and HP-UX */
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-#else
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-#define _LARGE_FILES 1 /* AIX */
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-#endif
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-#endif
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-
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-#define _LARGEFILE64_SOURCE
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-
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-#include <errno.h>
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-#include <stdio.h>
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-#include <string.h>
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-#include <stdlib.h>
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-#include <time.h>
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-#include <sys/stat.h>
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-
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-#ifdef _WIN32
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-#include <direct.h>
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-#include <windows.h>
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-#include <io.h>
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-#include <sys/locking.h>
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-#ifdef __BORLANDC__
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- #include <utime.h>
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-#else
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- #include <sys/utime.h>
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-#endif
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-#include <fcntl.h>
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-#else
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-#include <unistd.h>
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-#include <dirent.h>
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-#include <fcntl.h>
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-#include <sys/types.h>
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-#include <utime.h>
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-#endif
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-
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-#include <lua.h>
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-#include <lauxlib.h>
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-#include <lualib.h>
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-
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-#include "lfs.h"
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-
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-#define LFS_VERSION "1.6.2"
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-#define LFS_LIBNAME "lfs"
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-
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-#if LUA_VERSION_NUM < 502
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-# define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
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-#endif
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-
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-/* Define 'strerror' for systems that do not implement it */
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-#ifdef NO_STRERROR
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-#define strerror(_) "System unable to describe the error"
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-#endif
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-
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-/* Define 'getcwd' for systems that do not implement it */
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-#ifdef NO_GETCWD
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-#define getcwd(p,s) NULL
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-#define getcwd_error "Function 'getcwd' not provided by system"
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-#else
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-#define getcwd_error strerror(errno)
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- #ifdef _WIN32
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- /* MAX_PATH seems to be 260. Seems kind of small. Is there a better one? */
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- #define LFS_MAXPATHLEN MAX_PATH
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- #else
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- /* For MAXPATHLEN: */
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- #include <sys/param.h>
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- #define LFS_MAXPATHLEN MAXPATHLEN
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- #endif
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-#endif
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-
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-#define DIR_METATABLE "directory metatable"
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-typedef struct dir_data {
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- int closed;
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-#ifdef _WIN32
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- long hFile;
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- char pattern[MAX_PATH+1];
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-#else
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- DIR *dir;
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-#endif
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-} dir_data;
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-
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-#define LOCK_METATABLE "lock metatable"
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-
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-#ifdef _WIN32
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- #ifdef __BORLANDC__
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- #define lfs_setmode(L,file,m) ((void)L, setmode(_fileno(file), m))
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- #define STAT_STRUCT struct stati64
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- #else
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- #define lfs_setmode(L,file,m) ((void)L, _setmode(_fileno(file), m))
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- #define STAT_STRUCT struct _stati64
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- #endif
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-#define STAT_FUNC _stati64
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-#define LSTAT_FUNC STAT_FUNC
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-#else
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-#define _O_TEXT 0
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-#define _O_BINARY 0
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-#define lfs_setmode(L,file,m) ((void)L, (void)file, (void)m, 0)
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-#define STAT_STRUCT struct stat
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-#define STAT_FUNC stat
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-#define LSTAT_FUNC lstat
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-#endif
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-
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-/*
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-** Utility functions
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-*/
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-static int pusherror(lua_State *L, const char *info)
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-{
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- lua_pushnil(L);
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- if (info==NULL)
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- lua_pushstring(L, strerror(errno));
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- else
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- lua_pushfstring(L, "%s: %s", info, strerror(errno));
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- lua_pushinteger(L, errno);
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- return 3;
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-}
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-
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-static int pushresult(lua_State *L, int i, const char *info)
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-{
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- if (i==-1)
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- return pusherror(L, info);
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- lua_pushinteger(L, i);
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- return 1;
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-}
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-
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-
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-/*
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-** This function changes the working (current) directory
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-*/
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-static int change_dir (lua_State *L) {
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- const char *path = luaL_checkstring(L, 1);
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- if (chdir(path)) {
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- lua_pushnil (L);
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- lua_pushfstring (L,"Unable to change working directory to '%s'\n%s\n",
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- path, chdir_error);
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- return 2;
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- } else {
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- lua_pushboolean (L, 1);
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- return 1;
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- }
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-}
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-
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-/*
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-** This function returns the current directory
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-** If unable to get the current directory, it returns nil
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-** and a string describing the error
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-*/
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-static int get_dir (lua_State *L) {
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- char *path;
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- /* Passing (NULL, 0) is not guaranteed to work. Use a temp buffer and size instead. */
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- char buf[LFS_MAXPATHLEN];
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- if ((path = getcwd(buf, LFS_MAXPATHLEN)) == NULL) {
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- lua_pushnil(L);
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- lua_pushstring(L, getcwd_error);
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- return 2;
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- }
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- else {
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- lua_pushstring(L, path);
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- return 1;
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- }
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-}
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-
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-/*
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-** Check if the given element on the stack is a file and returns it.
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-*/
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-static FILE *check_file (lua_State *L, int idx, const char *funcname) {
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- FILE **fh = (FILE **)luaL_checkudata (L, idx, "FILE*");
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- if (fh == NULL) {
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- luaL_error (L, "%s: not a file", funcname);
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- return 0;
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- } else if (*fh == NULL) {
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- luaL_error (L, "%s: closed file", funcname);
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- return 0;
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- } else
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- return *fh;
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-}
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-
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-
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-/*
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-**
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-*/
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-static int _file_lock (lua_State *L, FILE *fh, const char *mode, const long start, long len, const char *funcname) {
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- int code;
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-#ifdef _WIN32
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- /* lkmode valid values are:
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- LK_LOCK Locks the specified bytes. If the bytes cannot be locked, the program immediately tries again after 1 second. If, after 10 attempts, the bytes cannot be locked, the constant returns an error.
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- LK_NBLCK Locks the specified bytes. If the bytes cannot be locked, the constant returns an error.
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- LK_NBRLCK Same as _LK_NBLCK.
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- LK_RLCK Same as _LK_LOCK.
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- LK_UNLCK Unlocks the specified bytes, which must have been previously locked.
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-
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- Regions should be locked only briefly and should be unlocked before closing a file or exiting the program.
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-
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- http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt__locking.asp
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- */
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- int lkmode;
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- switch (*mode) {
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- case 'r': lkmode = LK_NBLCK; break;
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- case 'w': lkmode = LK_NBLCK; break;
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- case 'u': lkmode = LK_UNLCK; break;
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- default : return luaL_error (L, "%s: invalid mode", funcname);
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- }
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- if (!len) {
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- fseek (fh, 0L, SEEK_END);
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- len = ftell (fh);
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- }
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- fseek (fh, start, SEEK_SET);
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-#ifdef __BORLANDC__
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- code = locking (fileno(fh), lkmode, len);
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-#else
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- code = _locking (fileno(fh), lkmode, len);
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-#endif
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-#else
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- struct flock f;
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- switch (*mode) {
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- case 'w': f.l_type = F_WRLCK; break;
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- case 'r': f.l_type = F_RDLCK; break;
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- case 'u': f.l_type = F_UNLCK; break;
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- default : return luaL_error (L, "%s: invalid mode", funcname);
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- }
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- f.l_whence = SEEK_SET;
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- f.l_start = (off_t)start;
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- f.l_len = (off_t)len;
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- code = fcntl (fileno(fh), F_SETLK, &f);
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-#endif
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- return (code != -1);
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-}
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-
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-#ifdef _WIN32
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-typedef struct lfs_Lock {
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- HANDLE fd;
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-} lfs_Lock;
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-static int lfs_lock_dir(lua_State *L) {
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- size_t pathl; HANDLE fd;
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- lfs_Lock *lock;
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- char *ln;
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- const char *lockfile = "/lockfile.lfs";
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- const char *path = luaL_checklstring(L, 1, &pathl);
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- ln = (char*)malloc(pathl + strlen(lockfile) + 1);
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- if(!ln) {
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- lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2;
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- }
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- strcpy(ln, path); strcat(ln, lockfile);
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- /* Use "CreateFileA" to use the Multi-Byte-Character version, even if the rest of the project uses the Unicode (UTF16) version */
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- if((fd = CreateFileA(ln, GENERIC_WRITE, 0, NULL, CREATE_NEW,
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- FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE, NULL)) == INVALID_HANDLE_VALUE) {
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- int en = GetLastError();
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- free(ln); lua_pushnil(L);
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- if(en == ERROR_FILE_EXISTS || en == ERROR_SHARING_VIOLATION)
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- lua_pushstring(L, "File exists");
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- else
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- lua_pushstring(L, strerror(en));
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- return 2;
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- }
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- free(ln);
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- lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
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- lock->fd = fd;
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- luaL_getmetatable (L, LOCK_METATABLE);
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- lua_setmetatable (L, -2);
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- return 1;
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-}
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-static int lfs_unlock_dir(lua_State *L) {
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- lfs_Lock *lock = luaL_checkudata(L, 1, LOCK_METATABLE);
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- CloseHandle(lock->fd);
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- return 0;
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-}
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-#else
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-typedef struct lfs_Lock {
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- char *ln;
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-} lfs_Lock;
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-static int lfs_lock_dir(lua_State *L) {
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- lfs_Lock *lock;
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- size_t pathl;
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- char *ln;
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- const char *lockfile = "/lockfile.lfs";
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- const char *path = luaL_checklstring(L, 1, &pathl);
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- lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
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- ln = (char*)malloc(pathl + strlen(lockfile) + 1);
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- if(!ln) {
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- lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2;
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- }
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- strcpy(ln, path); strcat(ln, lockfile);
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- if(symlink("lock", ln) == -1) {
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- free(ln); lua_pushnil(L);
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- lua_pushstring(L, strerror(errno)); return 2;
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- }
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- lock->ln = ln;
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- luaL_getmetatable (L, LOCK_METATABLE);
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- lua_setmetatable (L, -2);
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- return 1;
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-}
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-static int lfs_unlock_dir(lua_State *L) {
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- lfs_Lock *lock = luaL_checkudata(L, 1, LOCK_METATABLE);
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- if(lock->ln) {
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- unlink(lock->ln);
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- free(lock->ln);
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- lock->ln = NULL;
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- }
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- return 0;
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-}
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-#endif
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-
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-static int lfs_g_setmode (lua_State *L, FILE *f, int arg) {
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- static const int mode[] = {_O_BINARY, _O_TEXT};
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- static const char *const modenames[] = {"binary", "text", NULL};
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- int op = luaL_checkoption(L, arg, NULL, modenames);
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- int res = lfs_setmode(L, f, mode[op]);
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- if (res != -1) {
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- int i;
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- lua_pushboolean(L, 1);
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- for (i = 0; modenames[i] != NULL; i++) {
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- if (mode[i] == res) {
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- lua_pushstring(L, modenames[i]);
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- goto exit;
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- }
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- }
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- lua_pushnil(L);
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- exit:
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- return 2;
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- } else {
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- int en = errno;
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- lua_pushnil(L);
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- lua_pushfstring(L, "%s", strerror(en));
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- lua_pushinteger(L, en);
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- return 3;
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- }
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-}
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-
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-static int lfs_f_setmode(lua_State *L) {
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- return lfs_g_setmode(L, check_file(L, 1, "setmode"), 2);
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-}
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-
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-/*
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-** Locks a file.
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-** @param #1 File handle.
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-** @param #2 String with lock mode ('w'rite, 'r'ead).
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-** @param #3 Number with start position (optional).
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-** @param #4 Number with length (optional).
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-*/
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-static int file_lock (lua_State *L) {
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- FILE *fh = check_file (L, 1, "lock");
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- const char *mode = luaL_checkstring (L, 2);
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- const long start = luaL_optlong (L, 3, 0);
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- long len = luaL_optlong (L, 4, 0);
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- if (_file_lock (L, fh, mode, start, len, "lock")) {
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- lua_pushboolean (L, 1);
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- return 1;
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- } else {
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- lua_pushnil (L);
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- lua_pushfstring (L, "%s", strerror(errno));
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- return 2;
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- }
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-}
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-
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-
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-/*
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-** Unlocks a file.
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-** @param #1 File handle.
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-** @param #2 Number with start position (optional).
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-** @param #3 Number with length (optional).
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-*/
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-static int file_unlock (lua_State *L) {
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- FILE *fh = check_file (L, 1, "unlock");
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- const long start = luaL_optlong (L, 2, 0);
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- long len = luaL_optlong (L, 3, 0);
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- if (_file_lock (L, fh, "u", start, len, "unlock")) {
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- lua_pushboolean (L, 1);
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- return 1;
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- } else {
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- lua_pushnil (L);
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|
|
- lua_pushfstring (L, "%s", strerror(errno));
|
|
|
- return 2;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Creates a link.
|
|
|
-** @param #1 Object to link to.
|
|
|
-** @param #2 Name of link.
|
|
|
-** @param #3 True if link is symbolic (optional).
|
|
|
-*/
|
|
|
-static int make_link(lua_State *L)
|
|
|
-{
|
|
|
-#ifndef _WIN32
|
|
|
- const char *oldpath = luaL_checkstring(L, 1);
|
|
|
- const char *newpath = luaL_checkstring(L, 2);
|
|
|
- return pushresult(L,
|
|
|
- (lua_toboolean(L,3) ? symlink : link)(oldpath, newpath), NULL);
|
|
|
-#else
|
|
|
- return pusherror(L, "make_link is not supported on Windows");
|
|
|
-#endif
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Creates a directory.
|
|
|
-** @param #1 Directory path.
|
|
|
-*/
|
|
|
-static int make_dir (lua_State *L) {
|
|
|
- const char *path = luaL_checkstring (L, 1);
|
|
|
- int fail;
|
|
|
-#ifdef _WIN32
|
|
|
- fail = _mkdir (path);
|
|
|
-#else
|
|
|
- fail = mkdir (path, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP |
|
|
|
- S_IWGRP | S_IXGRP | S_IROTH | S_IXOTH );
|
|
|
-#endif
|
|
|
- if (fail) {
|
|
|
- lua_pushnil (L);
|
|
|
- lua_pushfstring (L, "%s", strerror(errno));
|
|
|
- return 2;
|
|
|
- }
|
|
|
- lua_pushboolean (L, 1);
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
-** Removes a directory.
|
|
|
-** @param #1 Directory path.
|
|
|
-*/
|
|
|
-static int remove_dir (lua_State *L) {
|
|
|
- const char *path = luaL_checkstring (L, 1);
|
|
|
- int fail;
|
|
|
-
|
|
|
- fail = rmdir (path);
|
|
|
-
|
|
|
- if (fail) {
|
|
|
- lua_pushnil (L);
|
|
|
- lua_pushfstring (L, "%s", strerror(errno));
|
|
|
- return 2;
|
|
|
- }
|
|
|
- lua_pushboolean (L, 1);
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
-** Directory iterator
|
|
|
-*/
|
|
|
-static int dir_iter (lua_State *L) {
|
|
|
-#ifdef _WIN32
|
|
|
- struct _finddata_t c_file;
|
|
|
-#else
|
|
|
- struct dirent *entry;
|
|
|
-#endif
|
|
|
- dir_data *d = (dir_data *)luaL_checkudata (L, 1, DIR_METATABLE);
|
|
|
- luaL_argcheck (L, d->closed == 0, 1, "closed directory");
|
|
|
-#ifdef _WIN32
|
|
|
- if (d->hFile == 0L) { /* first entry */
|
|
|
- if ((d->hFile = _findfirst (d->pattern, &c_file)) == -1L) {
|
|
|
- lua_pushnil (L);
|
|
|
- lua_pushstring (L, strerror (errno));
|
|
|
- d->closed = 1;
|
|
|
- return 2;
|
|
|
- } else {
|
|
|
- lua_pushstring (L, c_file.name);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- } else { /* next entry */
|
|
|
- if (_findnext (d->hFile, &c_file) == -1L) {
|
|
|
- /* no more entries => close directory */
|
|
|
- _findclose (d->hFile);
|
|
|
- d->closed = 1;
|
|
|
- return 0;
|
|
|
- } else {
|
|
|
- lua_pushstring (L, c_file.name);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- }
|
|
|
-#else
|
|
|
- if ((entry = readdir (d->dir)) != NULL) {
|
|
|
- lua_pushstring (L, entry->d_name);
|
|
|
- return 1;
|
|
|
- } else {
|
|
|
- /* no more entries => close directory */
|
|
|
- closedir (d->dir);
|
|
|
- d->closed = 1;
|
|
|
- return 0;
|
|
|
- }
|
|
|
-#endif
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Closes directory iterators
|
|
|
-*/
|
|
|
-static int dir_close (lua_State *L) {
|
|
|
- dir_data *d = (dir_data *)lua_touserdata (L, 1);
|
|
|
-#ifdef _WIN32
|
|
|
- if (!d->closed && d->hFile) {
|
|
|
- _findclose (d->hFile);
|
|
|
- }
|
|
|
-#else
|
|
|
- if (!d->closed && d->dir) {
|
|
|
- closedir (d->dir);
|
|
|
- }
|
|
|
-#endif
|
|
|
- d->closed = 1;
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Factory of directory iterators
|
|
|
-*/
|
|
|
-static int dir_iter_factory (lua_State *L) {
|
|
|
- const char *path = luaL_checkstring (L, 1);
|
|
|
- dir_data *d;
|
|
|
- lua_pushcfunction (L, dir_iter);
|
|
|
- d = (dir_data *) lua_newuserdata (L, sizeof(dir_data));
|
|
|
- luaL_getmetatable (L, DIR_METATABLE);
|
|
|
- lua_setmetatable (L, -2);
|
|
|
- d->closed = 0;
|
|
|
-#ifdef _WIN32
|
|
|
- d->hFile = 0L;
|
|
|
- if (strlen(path) > MAX_PATH-2)
|
|
|
- luaL_error (L, "path too long: %s", path);
|
|
|
- else
|
|
|
- sprintf (d->pattern, "%s/*", path);
|
|
|
-#else
|
|
|
- d->dir = opendir (path);
|
|
|
- if (d->dir == NULL)
|
|
|
- luaL_error (L, "cannot open %s: %s", path, strerror (errno));
|
|
|
-#endif
|
|
|
- return 2;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Creates directory metatable.
|
|
|
-*/
|
|
|
-static int dir_create_meta (lua_State *L) {
|
|
|
- luaL_newmetatable (L, DIR_METATABLE);
|
|
|
-
|
|
|
- /* Method table */
|
|
|
- lua_newtable(L);
|
|
|
- lua_pushcfunction (L, dir_iter);
|
|
|
- lua_setfield(L, -2, "next");
|
|
|
- lua_pushcfunction (L, dir_close);
|
|
|
- lua_setfield(L, -2, "close");
|
|
|
-
|
|
|
- /* Metamethods */
|
|
|
- lua_setfield(L, -2, "__index");
|
|
|
- lua_pushcfunction (L, dir_close);
|
|
|
- lua_setfield (L, -2, "__gc");
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
-** Creates lock metatable.
|
|
|
-*/
|
|
|
-static int lock_create_meta (lua_State *L) {
|
|
|
- luaL_newmetatable (L, LOCK_METATABLE);
|
|
|
-
|
|
|
- /* Method table */
|
|
|
- lua_newtable(L);
|
|
|
- lua_pushcfunction(L, lfs_unlock_dir);
|
|
|
- lua_setfield(L, -2, "free");
|
|
|
-
|
|
|
- /* Metamethods */
|
|
|
- lua_setfield(L, -2, "__index");
|
|
|
- lua_pushcfunction(L, lfs_unlock_dir);
|
|
|
- lua_setfield(L, -2, "__gc");
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-#ifdef _WIN32
|
|
|
- #ifndef S_ISDIR
|
|
|
- #define S_ISDIR(mode) (mode&_S_IFDIR)
|
|
|
- #endif
|
|
|
- #ifndef S_ISREG
|
|
|
- #define S_ISREG(mode) (mode&_S_IFREG)
|
|
|
- #endif
|
|
|
- #ifndef S_ISLNK
|
|
|
- #define S_ISLNK(mode) (0)
|
|
|
- #endif
|
|
|
- #ifndef S_ISSOCK
|
|
|
- #define S_ISSOCK(mode) (0)
|
|
|
- #endif
|
|
|
- #ifndef S_ISFIFO
|
|
|
- #define S_ISFIFO(mode) (0)
|
|
|
- #endif
|
|
|
- #ifndef S_ISCHR
|
|
|
- #define S_ISCHR(mode) (mode&_S_IFCHR)
|
|
|
- #endif
|
|
|
- #ifndef S_ISBLK
|
|
|
- #define S_ISBLK(mode) (0)
|
|
|
- #endif
|
|
|
-#endif
|
|
|
-/*
|
|
|
-** Convert the inode protection mode to a string.
|
|
|
-*/
|
|
|
-#ifdef _WIN32
|
|
|
-static const char *mode2string (unsigned short mode) {
|
|
|
-#else
|
|
|
-static const char *mode2string (mode_t mode) {
|
|
|
-#endif
|
|
|
- if ( S_ISREG(mode) )
|
|
|
- return "file";
|
|
|
- else if ( S_ISDIR(mode) )
|
|
|
- return "directory";
|
|
|
- else if ( S_ISLNK(mode) )
|
|
|
- return "link";
|
|
|
- else if ( S_ISSOCK(mode) )
|
|
|
- return "socket";
|
|
|
- else if ( S_ISFIFO(mode) )
|
|
|
- return "named pipe";
|
|
|
- else if ( S_ISCHR(mode) )
|
|
|
- return "char device";
|
|
|
- else if ( S_ISBLK(mode) )
|
|
|
- return "block device";
|
|
|
- else
|
|
|
- return "other";
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Set access time and modification values for file
|
|
|
-*/
|
|
|
-static int file_utime (lua_State *L) {
|
|
|
- const char *file = luaL_checkstring (L, 1);
|
|
|
- struct utimbuf utb, *buf;
|
|
|
-
|
|
|
- if (lua_gettop (L) == 1) /* set to current date/time */
|
|
|
- buf = NULL;
|
|
|
- else {
|
|
|
- utb.actime = (time_t)luaL_optnumber (L, 2, 0);
|
|
|
- utb.modtime = (time_t)luaL_optnumber (L, 3, utb.actime);
|
|
|
- buf = &utb;
|
|
|
- }
|
|
|
- if (utime (file, buf)) {
|
|
|
- lua_pushnil (L);
|
|
|
- lua_pushfstring (L, "%s", strerror (errno));
|
|
|
- return 2;
|
|
|
- }
|
|
|
- lua_pushboolean (L, 1);
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/* inode protection mode */
|
|
|
-static void push_st_mode (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushstring (L, mode2string (info->st_mode));
|
|
|
-}
|
|
|
-/* device inode resides on */
|
|
|
-static void push_st_dev (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_dev);
|
|
|
-}
|
|
|
-/* inode's number */
|
|
|
-static void push_st_ino (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_ino);
|
|
|
-}
|
|
|
-/* number of hard links to the file */
|
|
|
-static void push_st_nlink (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_nlink);
|
|
|
-}
|
|
|
-/* user-id of owner */
|
|
|
-static void push_st_uid (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_uid);
|
|
|
-}
|
|
|
-/* group-id of owner */
|
|
|
-static void push_st_gid (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_gid);
|
|
|
-}
|
|
|
-/* device type, for special file inode */
|
|
|
-static void push_st_rdev (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_rdev);
|
|
|
-}
|
|
|
-/* time of last access */
|
|
|
-static void push_st_atime (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, info->st_atime);
|
|
|
-}
|
|
|
-/* time of last data modification */
|
|
|
-static void push_st_mtime (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, info->st_mtime);
|
|
|
-}
|
|
|
-/* time of last file status change */
|
|
|
-static void push_st_ctime (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, info->st_ctime);
|
|
|
-}
|
|
|
-/* file size, in bytes */
|
|
|
-static void push_st_size (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_size);
|
|
|
-}
|
|
|
-#ifndef _WIN32
|
|
|
-/* blocks allocated for file */
|
|
|
-static void push_st_blocks (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_blocks);
|
|
|
-}
|
|
|
-/* optimal file system I/O blocksize */
|
|
|
-static void push_st_blksize (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushnumber (L, (lua_Number)info->st_blksize);
|
|
|
-}
|
|
|
-#endif
|
|
|
-static void push_invalid (lua_State *L, STAT_STRUCT *info) {
|
|
|
- luaL_error(L, "invalid attribute name");
|
|
|
-#ifndef _WIN32
|
|
|
- info->st_blksize = 0; /* never reached */
|
|
|
-#endif
|
|
|
-}
|
|
|
-
|
|
|
- /*
|
|
|
-** Convert the inode protection mode to a permission list.
|
|
|
-*/
|
|
|
-
|
|
|
-#ifdef _WIN32
|
|
|
-static const char *perm2string (unsigned short mode) {
|
|
|
- static char perms[10] = "---------\0";
|
|
|
- int i;
|
|
|
- for (i=0;i<9;i++) perms[i]='-';
|
|
|
- if (mode & _S_IREAD)
|
|
|
- { perms[0] = 'r'; perms[3] = 'r'; perms[6] = 'r'; }
|
|
|
- if (mode & _S_IWRITE)
|
|
|
- { perms[1] = 'w'; perms[4] = 'w'; perms[7] = 'w'; }
|
|
|
- if (mode & _S_IEXEC)
|
|
|
- { perms[2] = 'x'; perms[5] = 'x'; perms[8] = 'x'; }
|
|
|
- return perms;
|
|
|
-}
|
|
|
-#else
|
|
|
-static const char *perm2string (mode_t mode) {
|
|
|
- static char perms[10] = "---------\0";
|
|
|
- int i;
|
|
|
- for (i=0;i<9;i++) perms[i]='-';
|
|
|
- if (mode & S_IRUSR) perms[0] = 'r';
|
|
|
- if (mode & S_IWUSR) perms[1] = 'w';
|
|
|
- if (mode & S_IXUSR) perms[2] = 'x';
|
|
|
- if (mode & S_IRGRP) perms[3] = 'r';
|
|
|
- if (mode & S_IWGRP) perms[4] = 'w';
|
|
|
- if (mode & S_IXGRP) perms[5] = 'x';
|
|
|
- if (mode & S_IROTH) perms[6] = 'r';
|
|
|
- if (mode & S_IWOTH) perms[7] = 'w';
|
|
|
- if (mode & S_IXOTH) perms[8] = 'x';
|
|
|
- return perms;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-/* permssions string */
|
|
|
-static void push_st_perm (lua_State *L, STAT_STRUCT *info) {
|
|
|
- lua_pushstring (L, perm2string (info->st_mode));
|
|
|
-}
|
|
|
-
|
|
|
-typedef void (*_push_function) (lua_State *L, STAT_STRUCT *info);
|
|
|
-
|
|
|
-struct _stat_members {
|
|
|
- const char *name;
|
|
|
- _push_function push;
|
|
|
-};
|
|
|
-
|
|
|
-struct _stat_members members[] = {
|
|
|
- { "mode", push_st_mode },
|
|
|
- { "dev", push_st_dev },
|
|
|
- { "ino", push_st_ino },
|
|
|
- { "nlink", push_st_nlink },
|
|
|
- { "uid", push_st_uid },
|
|
|
- { "gid", push_st_gid },
|
|
|
- { "rdev", push_st_rdev },
|
|
|
- { "access", push_st_atime },
|
|
|
- { "modification", push_st_mtime },
|
|
|
- { "change", push_st_ctime },
|
|
|
- { "size", push_st_size },
|
|
|
- { "permissions", push_st_perm },
|
|
|
-#ifndef _WIN32
|
|
|
- { "blocks", push_st_blocks },
|
|
|
- { "blksize", push_st_blksize },
|
|
|
-#endif
|
|
|
- { NULL, push_invalid }
|
|
|
-};
|
|
|
-
|
|
|
-/*
|
|
|
-** Get file or symbolic link information
|
|
|
-*/
|
|
|
-static int _file_info_ (lua_State *L, int (*st)(const char*, STAT_STRUCT*)) {
|
|
|
- int i;
|
|
|
- STAT_STRUCT info;
|
|
|
- const char *file = luaL_checkstring (L, 1);
|
|
|
-
|
|
|
- if (st(file, &info)) {
|
|
|
- lua_pushnil (L);
|
|
|
- lua_pushfstring (L, "cannot obtain information from file `%s'", file);
|
|
|
- return 2;
|
|
|
- }
|
|
|
- if (lua_isstring (L, 2)) {
|
|
|
- int v;
|
|
|
- const char *member = lua_tostring (L, 2);
|
|
|
- if (strcmp (member, "mode") == 0) v = 0;
|
|
|
-#ifndef _WIN32
|
|
|
- else if (strcmp (member, "blocks") == 0) v = 11;
|
|
|
- else if (strcmp (member, "blksize") == 0) v = 12;
|
|
|
-#endif
|
|
|
- else /* look for member */
|
|
|
- for (v = 1; members[v].name; v++)
|
|
|
- if (*members[v].name == *member)
|
|
|
- break;
|
|
|
- /* push member value and return */
|
|
|
- members[v].push (L, &info);
|
|
|
- return 1;
|
|
|
- } else if (!lua_istable (L, 2))
|
|
|
- /* creates a table if none is given */
|
|
|
- lua_newtable (L);
|
|
|
- /* stores all members in table on top of the stack */
|
|
|
- for (i = 0; members[i].name; i++) {
|
|
|
- lua_pushstring (L, members[i].name);
|
|
|
- members[i].push (L, &info);
|
|
|
- lua_rawset (L, -3);
|
|
|
- }
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Get file information using stat.
|
|
|
-*/
|
|
|
-static int file_info (lua_State *L) {
|
|
|
- return _file_info_ (L, STAT_FUNC);
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Get symbolic link information using lstat.
|
|
|
-*/
|
|
|
-static int link_info (lua_State *L) {
|
|
|
- return _file_info_ (L, LSTAT_FUNC);
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/*
|
|
|
-** Assumes the table is on top of the stack.
|
|
|
-*/
|
|
|
-static void set_info (lua_State *L) {
|
|
|
- lua_pushliteral (L, "_COPYRIGHT");
|
|
|
- lua_pushliteral (L, "Copyright (C) 2003-2012 Kepler Project");
|
|
|
- lua_settable (L, -3);
|
|
|
- lua_pushliteral (L, "_DESCRIPTION");
|
|
|
- lua_pushliteral (L, "LuaFileSystem is a Lua library developed to complement the set of functions related to file systems offered by the standard Lua distribution");
|
|
|
- lua_settable (L, -3);
|
|
|
- lua_pushliteral (L, "_VERSION");
|
|
|
- lua_pushliteral (L, "LuaFileSystem "LFS_VERSION);
|
|
|
- lua_settable (L, -3);
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-static const struct luaL_Reg fslib[] = {
|
|
|
- {"attributes", file_info},
|
|
|
- {"chdir", change_dir},
|
|
|
- {"currentdir", get_dir},
|
|
|
- {"dir", dir_iter_factory},
|
|
|
- {"link", make_link},
|
|
|
- {"lock", file_lock},
|
|
|
- {"mkdir", make_dir},
|
|
|
- {"rmdir", remove_dir},
|
|
|
- {"symlinkattributes", link_info},
|
|
|
- {"setmode", lfs_f_setmode},
|
|
|
- {"touch", file_utime},
|
|
|
- {"unlock", file_unlock},
|
|
|
- {"lock_dir", lfs_lock_dir},
|
|
|
- {NULL, NULL},
|
|
|
-};
|
|
|
-
|
|
|
-int luaopen_lfs (lua_State *L) {
|
|
|
- dir_create_meta (L);
|
|
|
- lock_create_meta (L);
|
|
|
- luaL_newlib (L, fslib);
|
|
|
- lua_pushvalue(L, -1);
|
|
|
- lua_setglobal(L, LFS_LIBNAME);
|
|
|
- set_info (L);
|
|
|
- return 1;
|
|
|
-}
|
|
|
+/*
|
|
|
+** LuaFileSystem
|
|
|
+** Copyright Kepler Project 2003 (http://www.keplerproject.org/luafilesystem)
|
|
|
+**
|
|
|
+** File system manipulation library.
|
|
|
+** This library offers these functions:
|
|
|
+** lfs.attributes (filepath [, attributename])
|
|
|
+** lfs.chdir (path)
|
|
|
+** lfs.currentdir ()
|
|
|
+** lfs.dir (path)
|
|
|
+** lfs.lock (fh, mode)
|
|
|
+** lfs.lock_dir (path)
|
|
|
+** lfs.mkdir (path)
|
|
|
+** lfs.rmdir (path)
|
|
|
+** lfs.setmode (filepath, mode)
|
|
|
+** lfs.symlinkattributes (filepath [, attributename]) -- thanks to Sam Roberts
|
|
|
+** lfs.touch (filepath [, atime [, mtime]])
|
|
|
+** lfs.unlock (fh)
|
|
|
+**
|
|
|
+** $Id: lfs.c,v 1.61 2009/07/04 02:10:16 mascarenhas Exp $
|
|
|
+*/
|
|
|
+
|
|
|
+#ifdef _MSC_VER
|
|
|
+#ifndef _CRT_SECURE_NO_WARNINGS
|
|
|
+#define _CRT_SECURE_NO_WARNINGS /* disable Visual Studio compiler warnings for using standard C functions */
|
|
|
+#endif
|
|
|
+#endif
|
|
|
+
|
|
|
+#ifndef _WIN32
|
|
|
+#ifndef _AIX
|
|
|
+#define _FILE_OFFSET_BITS 64 /* Linux, Solaris and HP-UX */
|
|
|
+#else
|
|
|
+#define _LARGE_FILES 1 /* AIX */
|
|
|
+#endif
|
|
|
+#endif
|
|
|
+
|
|
|
+#define _LARGEFILE64_SOURCE
|
|
|
+
|
|
|
+#include <errno.h>
|
|
|
+#include <stdio.h>
|
|
|
+#include <string.h>
|
|
|
+#include <stdlib.h>
|
|
|
+#include <time.h>
|
|
|
+#include <sys/stat.h>
|
|
|
+
|
|
|
+#ifdef _WIN32
|
|
|
+#include <direct.h>
|
|
|
+#include <windows.h>
|
|
|
+#include <io.h>
|
|
|
+#include <sys/locking.h>
|
|
|
+#ifdef __BORLANDC__
|
|
|
+ #include <utime.h>
|
|
|
+#else
|
|
|
+ #include <sys/utime.h>
|
|
|
+#endif
|
|
|
+#include <fcntl.h>
|
|
|
+#else
|
|
|
+#include <unistd.h>
|
|
|
+#include <dirent.h>
|
|
|
+#include <fcntl.h>
|
|
|
+#include <sys/types.h>
|
|
|
+#include <utime.h>
|
|
|
+#endif
|
|
|
+
|
|
|
+#include <lua.h>
|
|
|
+#include <lauxlib.h>
|
|
|
+#include <lualib.h>
|
|
|
+
|
|
|
+#include "lfs.h"
|
|
|
+
|
|
|
+#define LFS_VERSION "1.6.2"
|
|
|
+#define LFS_LIBNAME "lfs"
|
|
|
+
|
|
|
+#if LUA_VERSION_NUM < 502
|
|
|
+# define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
|
|
|
+#endif
|
|
|
+
|
|
|
+/* Define 'strerror' for systems that do not implement it */
|
|
|
+#ifdef NO_STRERROR
|
|
|
+#define strerror(_) "System unable to describe the error"
|
|
|
+#endif
|
|
|
+
|
|
|
+/* Define 'getcwd' for systems that do not implement it */
|
|
|
+#ifdef NO_GETCWD
|
|
|
+#define getcwd(p,s) NULL
|
|
|
+#define getcwd_error "Function 'getcwd' not provided by system"
|
|
|
+#else
|
|
|
+#define getcwd_error strerror(errno)
|
|
|
+ #ifdef _WIN32
|
|
|
+ /* MAX_PATH seems to be 260. Seems kind of small. Is there a better one? */
|
|
|
+ #define LFS_MAXPATHLEN MAX_PATH
|
|
|
+ #else
|
|
|
+ /* For MAXPATHLEN: */
|
|
|
+ #include <sys/param.h>
|
|
|
+ #define LFS_MAXPATHLEN MAXPATHLEN
|
|
|
+ #endif
|
|
|
+#endif
|
|
|
+
|
|
|
+#define DIR_METATABLE "directory metatable"
|
|
|
+typedef struct dir_data {
|
|
|
+ int closed;
|
|
|
+#ifdef _WIN32
|
|
|
+ long hFile;
|
|
|
+ char pattern[MAX_PATH+1];
|
|
|
+#else
|
|
|
+ DIR *dir;
|
|
|
+#endif
|
|
|
+} dir_data;
|
|
|
+
|
|
|
+#define LOCK_METATABLE "lock metatable"
|
|
|
+
|
|
|
+#ifdef _WIN32
|
|
|
+ #ifdef __BORLANDC__
|
|
|
+ #define lfs_setmode(L,file,m) ((void)L, setmode(_fileno(file), m))
|
|
|
+ #define STAT_STRUCT struct stati64
|
|
|
+ #else
|
|
|
+ #define lfs_setmode(L,file,m) ((void)L, _setmode(_fileno(file), m))
|
|
|
+ #define STAT_STRUCT struct _stati64
|
|
|
+ #endif
|
|
|
+#define STAT_FUNC _stati64
|
|
|
+#define LSTAT_FUNC STAT_FUNC
|
|
|
+#else
|
|
|
+#define _O_TEXT 0
|
|
|
+#define _O_BINARY 0
|
|
|
+#define lfs_setmode(L,file,m) ((void)L, (void)file, (void)m, 0)
|
|
|
+#define STAT_STRUCT struct stat
|
|
|
+#define STAT_FUNC stat
|
|
|
+#define LSTAT_FUNC lstat
|
|
|
+#endif
|
|
|
+
|
|
|
+/*
|
|
|
+** Utility functions
|
|
|
+*/
|
|
|
+static int pusherror(lua_State *L, const char *info)
|
|
|
+{
|
|
|
+ lua_pushnil(L);
|
|
|
+ if (info==NULL)
|
|
|
+ lua_pushstring(L, strerror(errno));
|
|
|
+ else
|
|
|
+ lua_pushfstring(L, "%s: %s", info, strerror(errno));
|
|
|
+ lua_pushinteger(L, errno);
|
|
|
+ return 3;
|
|
|
+}
|
|
|
+
|
|
|
+static int pushresult(lua_State *L, int i, const char *info)
|
|
|
+{
|
|
|
+ if (i==-1)
|
|
|
+ return pusherror(L, info);
|
|
|
+ lua_pushinteger(L, i);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** This function changes the working (current) directory
|
|
|
+*/
|
|
|
+static int change_dir (lua_State *L) {
|
|
|
+ const char *path = luaL_checkstring(L, 1);
|
|
|
+ if (chdir(path)) {
|
|
|
+ lua_pushnil (L);
|
|
|
+ lua_pushfstring (L,"Unable to change working directory to '%s'\n%s\n",
|
|
|
+ path, chdir_error);
|
|
|
+ return 2;
|
|
|
+ } else {
|
|
|
+ lua_pushboolean (L, 1);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+** This function returns the current directory
|
|
|
+** If unable to get the current directory, it returns nil
|
|
|
+** and a string describing the error
|
|
|
+*/
|
|
|
+static int get_dir (lua_State *L) {
|
|
|
+ char *path;
|
|
|
+ /* Passing (NULL, 0) is not guaranteed to work. Use a temp buffer and size instead. */
|
|
|
+ char buf[LFS_MAXPATHLEN];
|
|
|
+ if ((path = getcwd(buf, LFS_MAXPATHLEN)) == NULL) {
|
|
|
+ lua_pushnil(L);
|
|
|
+ lua_pushstring(L, getcwd_error);
|
|
|
+ return 2;
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ lua_pushstring(L, path);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+** Check if the given element on the stack is a file and returns it.
|
|
|
+*/
|
|
|
+static FILE *check_file (lua_State *L, int idx, const char *funcname) {
|
|
|
+ FILE **fh = (FILE **)luaL_checkudata (L, idx, "FILE*");
|
|
|
+ if (fh == NULL) {
|
|
|
+ luaL_error (L, "%s: not a file", funcname);
|
|
|
+ return 0;
|
|
|
+ } else if (*fh == NULL) {
|
|
|
+ luaL_error (L, "%s: closed file", funcname);
|
|
|
+ return 0;
|
|
|
+ } else
|
|
|
+ return *fh;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+**
|
|
|
+*/
|
|
|
+static int _file_lock (lua_State *L, FILE *fh, const char *mode, const long start, long len, const char *funcname) {
|
|
|
+ int code;
|
|
|
+#ifdef _WIN32
|
|
|
+ /* lkmode valid values are:
|
|
|
+ LK_LOCK Locks the specified bytes. If the bytes cannot be locked, the program immediately tries again after 1 second. If, after 10 attempts, the bytes cannot be locked, the constant returns an error.
|
|
|
+ LK_NBLCK Locks the specified bytes. If the bytes cannot be locked, the constant returns an error.
|
|
|
+ LK_NBRLCK Same as _LK_NBLCK.
|
|
|
+ LK_RLCK Same as _LK_LOCK.
|
|
|
+ LK_UNLCK Unlocks the specified bytes, which must have been previously locked.
|
|
|
+
|
|
|
+ Regions should be locked only briefly and should be unlocked before closing a file or exiting the program.
|
|
|
+
|
|
|
+ http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt__locking.asp
|
|
|
+ */
|
|
|
+ int lkmode;
|
|
|
+ switch (*mode) {
|
|
|
+ case 'r': lkmode = LK_NBLCK; break;
|
|
|
+ case 'w': lkmode = LK_NBLCK; break;
|
|
|
+ case 'u': lkmode = LK_UNLCK; break;
|
|
|
+ default : return luaL_error (L, "%s: invalid mode", funcname);
|
|
|
+ }
|
|
|
+ if (!len) {
|
|
|
+ fseek (fh, 0L, SEEK_END);
|
|
|
+ len = ftell (fh);
|
|
|
+ }
|
|
|
+ fseek (fh, start, SEEK_SET);
|
|
|
+#ifdef __BORLANDC__
|
|
|
+ code = locking (fileno(fh), lkmode, len);
|
|
|
+#else
|
|
|
+ code = _locking (fileno(fh), lkmode, len);
|
|
|
+#endif
|
|
|
+#else
|
|
|
+ struct flock f;
|
|
|
+ switch (*mode) {
|
|
|
+ case 'w': f.l_type = F_WRLCK; break;
|
|
|
+ case 'r': f.l_type = F_RDLCK; break;
|
|
|
+ case 'u': f.l_type = F_UNLCK; break;
|
|
|
+ default : return luaL_error (L, "%s: invalid mode", funcname);
|
|
|
+ }
|
|
|
+ f.l_whence = SEEK_SET;
|
|
|
+ f.l_start = (off_t)start;
|
|
|
+ f.l_len = (off_t)len;
|
|
|
+ code = fcntl (fileno(fh), F_SETLK, &f);
|
|
|
+#endif
|
|
|
+ return (code != -1);
|
|
|
+}
|
|
|
+
|
|
|
+#ifdef _WIN32
|
|
|
+typedef struct lfs_Lock {
|
|
|
+ HANDLE fd;
|
|
|
+} lfs_Lock;
|
|
|
+static int lfs_lock_dir(lua_State *L) {
|
|
|
+ size_t pathl; HANDLE fd;
|
|
|
+ lfs_Lock *lock;
|
|
|
+ char *ln;
|
|
|
+ const char *lockfile = "/lockfile.lfs";
|
|
|
+ const char *path = luaL_checklstring(L, 1, &pathl);
|
|
|
+ ln = (char*)malloc(pathl + strlen(lockfile) + 1);
|
|
|
+ if(!ln) {
|
|
|
+ lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2;
|
|
|
+ }
|
|
|
+ strcpy(ln, path); strcat(ln, lockfile);
|
|
|
+ /* Use "CreateFileA" to use the Multi-Byte-Character version, even if the rest of the project uses the Unicode (UTF16) version */
|
|
|
+ if((fd = CreateFileA(ln, GENERIC_WRITE, 0, NULL, CREATE_NEW,
|
|
|
+ FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE, NULL)) == INVALID_HANDLE_VALUE) {
|
|
|
+ int en = GetLastError();
|
|
|
+ free(ln); lua_pushnil(L);
|
|
|
+ if(en == ERROR_FILE_EXISTS || en == ERROR_SHARING_VIOLATION)
|
|
|
+ lua_pushstring(L, "File exists");
|
|
|
+ else
|
|
|
+ lua_pushstring(L, strerror(en));
|
|
|
+ return 2;
|
|
|
+ }
|
|
|
+ free(ln);
|
|
|
+ lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
|
|
|
+ lock->fd = fd;
|
|
|
+ luaL_getmetatable (L, LOCK_METATABLE);
|
|
|
+ lua_setmetatable (L, -2);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+static int lfs_unlock_dir(lua_State *L) {
|
|
|
+ lfs_Lock *lock = luaL_checkudata(L, 1, LOCK_METATABLE);
|
|
|
+ CloseHandle(lock->fd);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+#else
|
|
|
+typedef struct lfs_Lock {
|
|
|
+ char *ln;
|
|
|
+} lfs_Lock;
|
|
|
+static int lfs_lock_dir(lua_State *L) {
|
|
|
+ lfs_Lock *lock;
|
|
|
+ size_t pathl;
|
|
|
+ char *ln;
|
|
|
+ const char *lockfile = "/lockfile.lfs";
|
|
|
+ const char *path = luaL_checklstring(L, 1, &pathl);
|
|
|
+ lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
|
|
|
+ ln = (char*)malloc(pathl + strlen(lockfile) + 1);
|
|
|
+ if(!ln) {
|
|
|
+ lua_pushnil(L); lua_pushstring(L, strerror(errno)); return 2;
|
|
|
+ }
|
|
|
+ strcpy(ln, path); strcat(ln, lockfile);
|
|
|
+ if(symlink("lock", ln) == -1) {
|
|
|
+ free(ln); lua_pushnil(L);
|
|
|
+ lua_pushstring(L, strerror(errno)); return 2;
|
|
|
+ }
|
|
|
+ lock->ln = ln;
|
|
|
+ luaL_getmetatable (L, LOCK_METATABLE);
|
|
|
+ lua_setmetatable (L, -2);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+static int lfs_unlock_dir(lua_State *L) {
|
|
|
+ lfs_Lock *lock = luaL_checkudata(L, 1, LOCK_METATABLE);
|
|
|
+ if(lock->ln) {
|
|
|
+ unlink(lock->ln);
|
|
|
+ free(lock->ln);
|
|
|
+ lock->ln = NULL;
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+#endif
|
|
|
+
|
|
|
+static int lfs_g_setmode (lua_State *L, FILE *f, int arg) {
|
|
|
+ static const int mode[] = {_O_BINARY, _O_TEXT};
|
|
|
+ static const char *const modenames[] = {"binary", "text", NULL};
|
|
|
+ int op = luaL_checkoption(L, arg, NULL, modenames);
|
|
|
+ int res = lfs_setmode(L, f, mode[op]);
|
|
|
+ if (res != -1) {
|
|
|
+ int i;
|
|
|
+ lua_pushboolean(L, 1);
|
|
|
+ for (i = 0; modenames[i] != NULL; i++) {
|
|
|
+ if (mode[i] == res) {
|
|
|
+ lua_pushstring(L, modenames[i]);
|
|
|
+ goto exit;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ lua_pushnil(L);
|
|
|
+ exit:
|
|
|
+ return 2;
|
|
|
+ } else {
|
|
|
+ int en = errno;
|
|
|
+ lua_pushnil(L);
|
|
|
+ lua_pushfstring(L, "%s", strerror(en));
|
|
|
+ lua_pushinteger(L, en);
|
|
|
+ return 3;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static int lfs_f_setmode(lua_State *L) {
|
|
|
+ return lfs_g_setmode(L, check_file(L, 1, "setmode"), 2);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+** Locks a file.
|
|
|
+** @param #1 File handle.
|
|
|
+** @param #2 String with lock mode ('w'rite, 'r'ead).
|
|
|
+** @param #3 Number with start position (optional).
|
|
|
+** @param #4 Number with length (optional).
|
|
|
+*/
|
|
|
+static int file_lock (lua_State *L) {
|
|
|
+ FILE *fh = check_file (L, 1, "lock");
|
|
|
+ const char *mode = luaL_checkstring (L, 2);
|
|
|
+ const long start = luaL_optlong (L, 3, 0);
|
|
|
+ long len = luaL_optlong (L, 4, 0);
|
|
|
+ if (_file_lock (L, fh, mode, start, len, "lock")) {
|
|
|
+ lua_pushboolean (L, 1);
|
|
|
+ return 1;
|
|
|
+ } else {
|
|
|
+ lua_pushnil (L);
|
|
|
+ lua_pushfstring (L, "%s", strerror(errno));
|
|
|
+ return 2;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Unlocks a file.
|
|
|
+** @param #1 File handle.
|
|
|
+** @param #2 Number with start position (optional).
|
|
|
+** @param #3 Number with length (optional).
|
|
|
+*/
|
|
|
+static int file_unlock (lua_State *L) {
|
|
|
+ FILE *fh = check_file (L, 1, "unlock");
|
|
|
+ const long start = luaL_optlong (L, 2, 0);
|
|
|
+ long len = luaL_optlong (L, 3, 0);
|
|
|
+ if (_file_lock (L, fh, "u", start, len, "unlock")) {
|
|
|
+ lua_pushboolean (L, 1);
|
|
|
+ return 1;
|
|
|
+ } else {
|
|
|
+ lua_pushnil (L);
|
|
|
+ lua_pushfstring (L, "%s", strerror(errno));
|
|
|
+ return 2;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Creates a link.
|
|
|
+** @param #1 Object to link to.
|
|
|
+** @param #2 Name of link.
|
|
|
+** @param #3 True if link is symbolic (optional).
|
|
|
+*/
|
|
|
+static int make_link(lua_State *L)
|
|
|
+{
|
|
|
+#ifndef _WIN32
|
|
|
+ const char *oldpath = luaL_checkstring(L, 1);
|
|
|
+ const char *newpath = luaL_checkstring(L, 2);
|
|
|
+ return pushresult(L,
|
|
|
+ (lua_toboolean(L,3) ? symlink : link)(oldpath, newpath), NULL);
|
|
|
+#else
|
|
|
+ return pusherror(L, "make_link is not supported on Windows");
|
|
|
+#endif
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Creates a directory.
|
|
|
+** @param #1 Directory path.
|
|
|
+*/
|
|
|
+static int make_dir (lua_State *L) {
|
|
|
+ const char *path = luaL_checkstring (L, 1);
|
|
|
+ int fail;
|
|
|
+#ifdef _WIN32
|
|
|
+ fail = _mkdir (path);
|
|
|
+#else
|
|
|
+ fail = mkdir (path, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP |
|
|
|
+ S_IWGRP | S_IXGRP | S_IROTH | S_IXOTH );
|
|
|
+#endif
|
|
|
+ if (fail) {
|
|
|
+ lua_pushnil (L);
|
|
|
+ lua_pushfstring (L, "%s", strerror(errno));
|
|
|
+ return 2;
|
|
|
+ }
|
|
|
+ lua_pushboolean (L, 1);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+** Removes a directory.
|
|
|
+** @param #1 Directory path.
|
|
|
+*/
|
|
|
+static int remove_dir (lua_State *L) {
|
|
|
+ const char *path = luaL_checkstring (L, 1);
|
|
|
+ int fail;
|
|
|
+
|
|
|
+ fail = rmdir (path);
|
|
|
+
|
|
|
+ if (fail) {
|
|
|
+ lua_pushnil (L);
|
|
|
+ lua_pushfstring (L, "%s", strerror(errno));
|
|
|
+ return 2;
|
|
|
+ }
|
|
|
+ lua_pushboolean (L, 1);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+** Directory iterator
|
|
|
+*/
|
|
|
+static int dir_iter (lua_State *L) {
|
|
|
+#ifdef _WIN32
|
|
|
+ struct _finddata_t c_file;
|
|
|
+#else
|
|
|
+ struct dirent *entry;
|
|
|
+#endif
|
|
|
+ dir_data *d = (dir_data *)luaL_checkudata (L, 1, DIR_METATABLE);
|
|
|
+ luaL_argcheck (L, d->closed == 0, 1, "closed directory");
|
|
|
+#ifdef _WIN32
|
|
|
+ if (d->hFile == 0L) { /* first entry */
|
|
|
+ if ((d->hFile = _findfirst (d->pattern, &c_file)) == -1L) {
|
|
|
+ lua_pushnil (L);
|
|
|
+ lua_pushstring (L, strerror (errno));
|
|
|
+ d->closed = 1;
|
|
|
+ return 2;
|
|
|
+ } else {
|
|
|
+ lua_pushstring (L, c_file.name);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+ } else { /* next entry */
|
|
|
+ if (_findnext (d->hFile, &c_file) == -1L) {
|
|
|
+ /* no more entries => close directory */
|
|
|
+ _findclose (d->hFile);
|
|
|
+ d->closed = 1;
|
|
|
+ return 0;
|
|
|
+ } else {
|
|
|
+ lua_pushstring (L, c_file.name);
|
|
|
+ return 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+#else
|
|
|
+ if ((entry = readdir (d->dir)) != NULL) {
|
|
|
+ lua_pushstring (L, entry->d_name);
|
|
|
+ return 1;
|
|
|
+ } else {
|
|
|
+ /* no more entries => close directory */
|
|
|
+ closedir (d->dir);
|
|
|
+ d->closed = 1;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+#endif
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Closes directory iterators
|
|
|
+*/
|
|
|
+static int dir_close (lua_State *L) {
|
|
|
+ dir_data *d = (dir_data *)lua_touserdata (L, 1);
|
|
|
+#ifdef _WIN32
|
|
|
+ if (!d->closed && d->hFile) {
|
|
|
+ _findclose (d->hFile);
|
|
|
+ }
|
|
|
+#else
|
|
|
+ if (!d->closed && d->dir) {
|
|
|
+ closedir (d->dir);
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ d->closed = 1;
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Factory of directory iterators
|
|
|
+*/
|
|
|
+static int dir_iter_factory (lua_State *L) {
|
|
|
+ const char *path = luaL_checkstring (L, 1);
|
|
|
+ dir_data *d;
|
|
|
+ lua_pushcfunction (L, dir_iter);
|
|
|
+ d = (dir_data *) lua_newuserdata (L, sizeof(dir_data));
|
|
|
+ luaL_getmetatable (L, DIR_METATABLE);
|
|
|
+ lua_setmetatable (L, -2);
|
|
|
+ d->closed = 0;
|
|
|
+#ifdef _WIN32
|
|
|
+ d->hFile = 0L;
|
|
|
+ if (strlen(path) > MAX_PATH-2)
|
|
|
+ luaL_error (L, "path too long: %s", path);
|
|
|
+ else
|
|
|
+ sprintf (d->pattern, "%s/*", path);
|
|
|
+#else
|
|
|
+ d->dir = opendir (path);
|
|
|
+ if (d->dir == NULL)
|
|
|
+ luaL_error (L, "cannot open %s: %s", path, strerror (errno));
|
|
|
+#endif
|
|
|
+ return 2;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Creates directory metatable.
|
|
|
+*/
|
|
|
+static int dir_create_meta (lua_State *L) {
|
|
|
+ luaL_newmetatable (L, DIR_METATABLE);
|
|
|
+
|
|
|
+ /* Method table */
|
|
|
+ lua_newtable(L);
|
|
|
+ lua_pushcfunction (L, dir_iter);
|
|
|
+ lua_setfield(L, -2, "next");
|
|
|
+ lua_pushcfunction (L, dir_close);
|
|
|
+ lua_setfield(L, -2, "close");
|
|
|
+
|
|
|
+ /* Metamethods */
|
|
|
+ lua_setfield(L, -2, "__index");
|
|
|
+ lua_pushcfunction (L, dir_close);
|
|
|
+ lua_setfield (L, -2, "__gc");
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+** Creates lock metatable.
|
|
|
+*/
|
|
|
+static int lock_create_meta (lua_State *L) {
|
|
|
+ luaL_newmetatable (L, LOCK_METATABLE);
|
|
|
+
|
|
|
+ /* Method table */
|
|
|
+ lua_newtable(L);
|
|
|
+ lua_pushcfunction(L, lfs_unlock_dir);
|
|
|
+ lua_setfield(L, -2, "free");
|
|
|
+
|
|
|
+ /* Metamethods */
|
|
|
+ lua_setfield(L, -2, "__index");
|
|
|
+ lua_pushcfunction(L, lfs_unlock_dir);
|
|
|
+ lua_setfield(L, -2, "__gc");
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+#ifdef _WIN32
|
|
|
+ #ifndef S_ISDIR
|
|
|
+ #define S_ISDIR(mode) (mode&_S_IFDIR)
|
|
|
+ #endif
|
|
|
+ #ifndef S_ISREG
|
|
|
+ #define S_ISREG(mode) (mode&_S_IFREG)
|
|
|
+ #endif
|
|
|
+ #ifndef S_ISLNK
|
|
|
+ #define S_ISLNK(mode) (0)
|
|
|
+ #endif
|
|
|
+ #ifndef S_ISSOCK
|
|
|
+ #define S_ISSOCK(mode) (0)
|
|
|
+ #endif
|
|
|
+ #ifndef S_ISFIFO
|
|
|
+ #define S_ISFIFO(mode) (0)
|
|
|
+ #endif
|
|
|
+ #ifndef S_ISCHR
|
|
|
+ #define S_ISCHR(mode) (mode&_S_IFCHR)
|
|
|
+ #endif
|
|
|
+ #ifndef S_ISBLK
|
|
|
+ #define S_ISBLK(mode) (0)
|
|
|
+ #endif
|
|
|
+#endif
|
|
|
+/*
|
|
|
+** Convert the inode protection mode to a string.
|
|
|
+*/
|
|
|
+#ifdef _WIN32
|
|
|
+static const char *mode2string (unsigned short mode) {
|
|
|
+#else
|
|
|
+static const char *mode2string (mode_t mode) {
|
|
|
+#endif
|
|
|
+ if ( S_ISREG(mode) )
|
|
|
+ return "file";
|
|
|
+ else if ( S_ISDIR(mode) )
|
|
|
+ return "directory";
|
|
|
+ else if ( S_ISLNK(mode) )
|
|
|
+ return "link";
|
|
|
+ else if ( S_ISSOCK(mode) )
|
|
|
+ return "socket";
|
|
|
+ else if ( S_ISFIFO(mode) )
|
|
|
+ return "named pipe";
|
|
|
+ else if ( S_ISCHR(mode) )
|
|
|
+ return "char device";
|
|
|
+ else if ( S_ISBLK(mode) )
|
|
|
+ return "block device";
|
|
|
+ else
|
|
|
+ return "other";
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Set access time and modification values for file
|
|
|
+*/
|
|
|
+static int file_utime (lua_State *L) {
|
|
|
+ const char *file = luaL_checkstring (L, 1);
|
|
|
+ struct utimbuf utb, *buf;
|
|
|
+
|
|
|
+ if (lua_gettop (L) == 1) /* set to current date/time */
|
|
|
+ buf = NULL;
|
|
|
+ else {
|
|
|
+ utb.actime = (time_t)luaL_optnumber (L, 2, 0);
|
|
|
+ utb.modtime = (time_t)luaL_optnumber (L, 3, utb.actime);
|
|
|
+ buf = &utb;
|
|
|
+ }
|
|
|
+ if (utime (file, buf)) {
|
|
|
+ lua_pushnil (L);
|
|
|
+ lua_pushfstring (L, "%s", strerror (errno));
|
|
|
+ return 2;
|
|
|
+ }
|
|
|
+ lua_pushboolean (L, 1);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/* inode protection mode */
|
|
|
+static void push_st_mode (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushstring (L, mode2string (info->st_mode));
|
|
|
+}
|
|
|
+/* device inode resides on */
|
|
|
+static void push_st_dev (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_dev);
|
|
|
+}
|
|
|
+/* inode's number */
|
|
|
+static void push_st_ino (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_ino);
|
|
|
+}
|
|
|
+/* number of hard links to the file */
|
|
|
+static void push_st_nlink (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_nlink);
|
|
|
+}
|
|
|
+/* user-id of owner */
|
|
|
+static void push_st_uid (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_uid);
|
|
|
+}
|
|
|
+/* group-id of owner */
|
|
|
+static void push_st_gid (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_gid);
|
|
|
+}
|
|
|
+/* device type, for special file inode */
|
|
|
+static void push_st_rdev (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_rdev);
|
|
|
+}
|
|
|
+/* time of last access */
|
|
|
+static void push_st_atime (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, info->st_atime);
|
|
|
+}
|
|
|
+/* time of last data modification */
|
|
|
+static void push_st_mtime (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, info->st_mtime);
|
|
|
+}
|
|
|
+/* time of last file status change */
|
|
|
+static void push_st_ctime (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, info->st_ctime);
|
|
|
+}
|
|
|
+/* file size, in bytes */
|
|
|
+static void push_st_size (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_size);
|
|
|
+}
|
|
|
+#ifndef _WIN32
|
|
|
+/* blocks allocated for file */
|
|
|
+static void push_st_blocks (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_blocks);
|
|
|
+}
|
|
|
+/* optimal file system I/O blocksize */
|
|
|
+static void push_st_blksize (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushnumber (L, (lua_Number)info->st_blksize);
|
|
|
+}
|
|
|
+#endif
|
|
|
+static void push_invalid (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ luaL_error(L, "invalid attribute name");
|
|
|
+#ifndef _WIN32
|
|
|
+ info->st_blksize = 0; /* never reached */
|
|
|
+#endif
|
|
|
+}
|
|
|
+
|
|
|
+ /*
|
|
|
+** Convert the inode protection mode to a permission list.
|
|
|
+*/
|
|
|
+
|
|
|
+#ifdef _WIN32
|
|
|
+static const char *perm2string (unsigned short mode) {
|
|
|
+ static char perms[10] = "---------\0";
|
|
|
+ int i;
|
|
|
+ for (i=0;i<9;i++) perms[i]='-';
|
|
|
+ if (mode & _S_IREAD)
|
|
|
+ { perms[0] = 'r'; perms[3] = 'r'; perms[6] = 'r'; }
|
|
|
+ if (mode & _S_IWRITE)
|
|
|
+ { perms[1] = 'w'; perms[4] = 'w'; perms[7] = 'w'; }
|
|
|
+ if (mode & _S_IEXEC)
|
|
|
+ { perms[2] = 'x'; perms[5] = 'x'; perms[8] = 'x'; }
|
|
|
+ return perms;
|
|
|
+}
|
|
|
+#else
|
|
|
+static const char *perm2string (mode_t mode) {
|
|
|
+ static char perms[10] = "---------\0";
|
|
|
+ int i;
|
|
|
+ for (i=0;i<9;i++) perms[i]='-';
|
|
|
+ if (mode & S_IRUSR) perms[0] = 'r';
|
|
|
+ if (mode & S_IWUSR) perms[1] = 'w';
|
|
|
+ if (mode & S_IXUSR) perms[2] = 'x';
|
|
|
+ if (mode & S_IRGRP) perms[3] = 'r';
|
|
|
+ if (mode & S_IWGRP) perms[4] = 'w';
|
|
|
+ if (mode & S_IXGRP) perms[5] = 'x';
|
|
|
+ if (mode & S_IROTH) perms[6] = 'r';
|
|
|
+ if (mode & S_IWOTH) perms[7] = 'w';
|
|
|
+ if (mode & S_IXOTH) perms[8] = 'x';
|
|
|
+ return perms;
|
|
|
+}
|
|
|
+#endif
|
|
|
+
|
|
|
+/* permssions string */
|
|
|
+static void push_st_perm (lua_State *L, STAT_STRUCT *info) {
|
|
|
+ lua_pushstring (L, perm2string (info->st_mode));
|
|
|
+}
|
|
|
+
|
|
|
+typedef void (*_push_function) (lua_State *L, STAT_STRUCT *info);
|
|
|
+
|
|
|
+struct _stat_members {
|
|
|
+ const char *name;
|
|
|
+ _push_function push;
|
|
|
+};
|
|
|
+
|
|
|
+struct _stat_members members[] = {
|
|
|
+ { "mode", push_st_mode },
|
|
|
+ { "dev", push_st_dev },
|
|
|
+ { "ino", push_st_ino },
|
|
|
+ { "nlink", push_st_nlink },
|
|
|
+ { "uid", push_st_uid },
|
|
|
+ { "gid", push_st_gid },
|
|
|
+ { "rdev", push_st_rdev },
|
|
|
+ { "access", push_st_atime },
|
|
|
+ { "modification", push_st_mtime },
|
|
|
+ { "change", push_st_ctime },
|
|
|
+ { "size", push_st_size },
|
|
|
+ { "permissions", push_st_perm },
|
|
|
+#ifndef _WIN32
|
|
|
+ { "blocks", push_st_blocks },
|
|
|
+ { "blksize", push_st_blksize },
|
|
|
+#endif
|
|
|
+ { NULL, push_invalid }
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+** Get file or symbolic link information
|
|
|
+*/
|
|
|
+static int _file_info_ (lua_State *L, int (*st)(const char*, STAT_STRUCT*)) {
|
|
|
+ int i;
|
|
|
+ STAT_STRUCT info;
|
|
|
+ const char *file = luaL_checkstring (L, 1);
|
|
|
+
|
|
|
+ if (st(file, &info)) {
|
|
|
+ lua_pushnil (L);
|
|
|
+ lua_pushfstring (L, "cannot obtain information from file `%s'", file);
|
|
|
+ return 2;
|
|
|
+ }
|
|
|
+ if (lua_isstring (L, 2)) {
|
|
|
+ int v;
|
|
|
+ const char *member = lua_tostring (L, 2);
|
|
|
+ if (strcmp (member, "mode") == 0) v = 0;
|
|
|
+#ifndef _WIN32
|
|
|
+ else if (strcmp (member, "blocks") == 0) v = 11;
|
|
|
+ else if (strcmp (member, "blksize") == 0) v = 12;
|
|
|
+#endif
|
|
|
+ else /* look for member */
|
|
|
+ for (v = 1; members[v].name; v++)
|
|
|
+ if (*members[v].name == *member)
|
|
|
+ break;
|
|
|
+ /* push member value and return */
|
|
|
+ members[v].push (L, &info);
|
|
|
+ return 1;
|
|
|
+ } else if (!lua_istable (L, 2))
|
|
|
+ /* creates a table if none is given */
|
|
|
+ lua_newtable (L);
|
|
|
+ /* stores all members in table on top of the stack */
|
|
|
+ for (i = 0; members[i].name; i++) {
|
|
|
+ lua_pushstring (L, members[i].name);
|
|
|
+ members[i].push (L, &info);
|
|
|
+ lua_rawset (L, -3);
|
|
|
+ }
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Get file information using stat.
|
|
|
+*/
|
|
|
+static int file_info (lua_State *L) {
|
|
|
+ return _file_info_ (L, STAT_FUNC);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Get symbolic link information using lstat.
|
|
|
+*/
|
|
|
+static int link_info (lua_State *L) {
|
|
|
+ return _file_info_ (L, LSTAT_FUNC);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+** Assumes the table is on top of the stack.
|
|
|
+*/
|
|
|
+static void set_info (lua_State *L) {
|
|
|
+ lua_pushliteral (L, "_COPYRIGHT");
|
|
|
+ lua_pushliteral (L, "Copyright (C) 2003-2012 Kepler Project");
|
|
|
+ lua_settable (L, -3);
|
|
|
+ lua_pushliteral (L, "_DESCRIPTION");
|
|
|
+ lua_pushliteral (L, "LuaFileSystem is a Lua library developed to complement the set of functions related to file systems offered by the standard Lua distribution");
|
|
|
+ lua_settable (L, -3);
|
|
|
+ lua_pushliteral (L, "_VERSION");
|
|
|
+ lua_pushliteral (L, "LuaFileSystem "LFS_VERSION);
|
|
|
+ lua_settable (L, -3);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static const struct luaL_Reg fslib[] = {
|
|
|
+ {"attributes", file_info},
|
|
|
+ {"chdir", change_dir},
|
|
|
+ {"currentdir", get_dir},
|
|
|
+ {"dir", dir_iter_factory},
|
|
|
+ {"link", make_link},
|
|
|
+ {"lock", file_lock},
|
|
|
+ {"mkdir", make_dir},
|
|
|
+ {"rmdir", remove_dir},
|
|
|
+ {"symlinkattributes", link_info},
|
|
|
+ {"setmode", lfs_f_setmode},
|
|
|
+ {"touch", file_utime},
|
|
|
+ {"unlock", file_unlock},
|
|
|
+ {"lock_dir", lfs_lock_dir},
|
|
|
+ {NULL, NULL},
|
|
|
+};
|
|
|
+
|
|
|
+int luaopen_lfs (lua_State *L) {
|
|
|
+ dir_create_meta (L);
|
|
|
+ lock_create_meta (L);
|
|
|
+ luaL_newlib (L, fslib);
|
|
|
+ lua_pushvalue(L, -1);
|
|
|
+ lua_setglobal(L, LFS_LIBNAME);
|
|
|
+ set_info (L);
|
|
|
+ return 1;
|
|
|
+}
|
bel2125