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@@ -0,0 +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;
|
|
|
+}
|
bel