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-rw-r--r--3rdparty/luafilesystem/src/lfs.c1324
1 files changed, 797 insertions, 527 deletions
diff --git a/3rdparty/luafilesystem/src/lfs.c b/3rdparty/luafilesystem/src/lfs.c
index 4eed5d99a9c..95ab63b4329 100644
--- a/3rdparty/luafilesystem/src/lfs.c
+++ b/3rdparty/luafilesystem/src/lfs.c
@@ -1,33 +1,37 @@
/*
** LuaFileSystem
-** Copyright Kepler Project 2003 (http://www.keplerproject.org/luafilesystem)
+** Copyright Kepler Project 2003 - 2020
+** (http://keplerproject.github.io/luafilesystem)
**
** File system manipulation library.
** This library offers these functions:
-** lfs.attributes (filepath [, attributename])
+** lfs.attributes (filepath [, attributename | attributetable])
** lfs.chdir (path)
** lfs.currentdir ()
** lfs.dir (path)
+** lfs.link (old, new[, symlink])
** 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.symlinkattributes (filepath [, attributename])
** lfs.touch (filepath [, atime [, mtime]])
** lfs.unlock (fh)
-**
-** $Id: lfs.c,v 1.61 2009/07/04 02:10:16 mascarenhas Exp $
*/
#ifndef LFS_DO_NOT_USE_LARGE_FILE
#ifndef _WIN32
#ifndef _AIX
-#define _FILE_OFFSET_BITS 64 /* Linux, Solaris and HP-UX */
+#define _FILE_OFFSET_BITS 64 /* Linux, Solaris and HP-UX */
#else
-#define _LARGE_FILES 1 /* AIX */
+#define _LARGE_FILES 1 /* AIX */
+#endif
#endif
#endif
+
+#ifdef _WIN32
+#define _WIN32_WINNT 0x600
#endif
#ifndef LFS_DO_NOT_USE_LARGE_FILE
@@ -42,28 +46,39 @@
#include <sys/stat.h>
#ifdef _WIN32
+
#include <direct.h>
#include <windows.h>
#include <io.h>
#include <sys/locking.h>
+
#ifdef __BORLANDC__
- #include <utime.h>
+#include <utime.h>
#else
- #include <sys/utime.h>
+#include <sys/utime.h>
#endif
+
#include <fcntl.h>
+
+/* MAX_PATH seems to be 260. Seems kind of small. Is there a better one? */
+#define LFS_MAXPATHLEN MAX_PATH
+
#else
+
#include <unistd.h>
#include <dirent.h>
#include <fcntl.h>
#include <sys/types.h>
#include <utime.h>
-#endif
+#include <sys/param.h> /* for MAXPATHLEN */
-#ifdef __GNU__
-#ifndef MAXPATHLEN
-#define MAXPATHLEN 1024
+#ifdef MAXPATHLEN
+#define LFS_MAXPATHLEN MAXPATHLEN
+#else
+#include <limits.h> /* for _POSIX_PATH_MAX */
+#define LFS_MAXPATHLEN _POSIX_PATH_MAX
#endif
+
#endif
#include <lua.h>
@@ -72,10 +87,10 @@
#include "lfs.h"
-#define LFS_VERSION "1.6.3"
+#define LFS_VERSION "1.8.0"
#define LFS_LIBNAME "lfs"
-#if LUA_VERSION_NUM >= 503 /* Lua 5.3 */
+#if LUA_VERSION_NUM >= 503 /* Lua 5.3+ */
#ifndef luaL_optlong
#define luaL_optlong luaL_optinteger
@@ -83,8 +98,10 @@
#endif
-#if LUA_VERSION_NUM < 502
-# define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
+#if LUA_VERSION_NUM >= 502
+#define new_lib(L, l) (luaL_newlib(L, l))
+#else
+#define new_lib(L, l) (lua_newtable(L), luaL_register(L, NULL, l))
#endif
/* Define 'strerror' for systems that do not implement it */
@@ -92,91 +109,165 @@
#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;
+ int closed;
#ifdef _WIN32
- intptr_t hFile;
- char pattern[MAX_PATH+1];
+ intptr_t hFile;
+ char pattern[MAX_PATH + 1];
#else
- DIR *dir;
+ 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
+
+#ifdef __BORLANDC__
+#define lfs_setmode(file, m) (setmode(_fileno(file), m))
+#define STAT_STRUCT struct stati64
+#else
+#define lfs_setmode(file, m) (_setmode(_fileno(file), m))
+#define STAT_STRUCT struct _stati64
+#endif
+
+#ifndef _S_IFLNK
+#define _S_IFLNK 0x400
+#endif
+
+#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) (mode&_S_IFLNK)
+#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
+
#define STAT_FUNC _stati64
-#define LSTAT_FUNC STAT_FUNC
+#define LSTAT_FUNC lfs_win32_lstat
+
#else
+
#define _O_TEXT 0
#define _O_BINARY 0
-#define lfs_setmode(L,file,m) ((void)L, (void)file, (void)m, 0)
+#define lfs_setmode(file, m) ((void)file, (void)m, 0)
#define STAT_STRUCT struct stat
#define STAT_FUNC stat
#define LSTAT_FUNC lstat
+
+#endif
+
+#ifdef _WIN32
+#define lfs_mkdir _mkdir
+#else
+#define lfs_mkdir(path) (mkdir((path), \
+ S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH | S_IXOTH))
+#endif
+
+#ifdef _WIN32
+
+int lfs_win32_pusherror(lua_State * L)
+{
+ int en = GetLastError();
+ 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;
+}
+
+#define TICKS_PER_SECOND 10000000
+#define EPOCH_DIFFERENCE 11644473600LL
+time_t windowsToUnixTime(FILETIME ft)
+{
+ ULARGE_INTEGER uli;
+ uli.LowPart = ft.dwLowDateTime;
+ uli.HighPart = ft.dwHighDateTime;
+ return (time_t) (uli.QuadPart / TICKS_PER_SECOND - EPOCH_DIFFERENCE);
+}
+
+int lfs_win32_lstat(const char *path, STAT_STRUCT * buffer)
+{
+ WIN32_FILE_ATTRIBUTE_DATA win32buffer;
+ if (GetFileAttributesEx(path, GetFileExInfoStandard, &win32buffer)) {
+ if (!(win32buffer.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
+ return STAT_FUNC(path, buffer);
+ }
+ buffer->st_mode = _S_IFLNK;
+ buffer->st_dev = 0;
+ buffer->st_ino = 0;
+ buffer->st_nlink = 0;
+ buffer->st_uid = 0;
+ buffer->st_gid = 0;
+ buffer->st_rdev = 0;
+ buffer->st_atime = windowsToUnixTime(win32buffer.ftLastAccessTime);
+ buffer->st_mtime = windowsToUnixTime(win32buffer.ftLastWriteTime);
+ buffer->st_ctime = windowsToUnixTime(win32buffer.ftCreationTime);
+ buffer->st_size = 0;
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
#endif
/*
** Utility functions
*/
-static int pusherror(lua_State *L, const char *info)
+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;
+ 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;
}
-#ifndef _WIN32
-static int pushresult(lua_State *L, int i, const char *info)
+static int pushresult(lua_State * L, int res, const char *info)
{
- if (i==-1)
- return pusherror(L, info);
- lua_pushinteger(L, i);
- return 1;
+ if (res == -1) {
+ return pusherror(L, info);
+ } else {
+ lua_pushboolean(L, 1);
+ return 1;
+ }
}
-#endif
+
+
/*
** 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;
- }
+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;
+ }
}
/*
@@ -184,39 +275,62 @@ static int change_dir (lua_State *L) {
** 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;
+static int get_dir(lua_State * L)
+{
+#ifdef NO_GETCWD
+ lua_pushnil(L);
+ lua_pushstring(L, "Function 'getcwd' not provided by system");
+ return 2;
+#else
+ char *path = NULL;
+ /* Passing (NULL, 0) is not guaranteed to work.
+ Use a temp buffer and size instead. */
+ size_t size = LFS_MAXPATHLEN; /* initial buffer size */
+ int result;
+ while (1) {
+ char *path2 = realloc(path, size);
+ if (!path2) { /* failed to allocate */
+ result = pusherror(L, "get_dir realloc() failed");
+ break;
+ }
+ path = path2;
+ if (getcwd(path, size) != NULL) {
+ /* success, push the path to the Lua stack */
+ lua_pushstring(L, path);
+ result = 1;
+ break;
+ }
+ if (errno != ERANGE) { /* unexpected error */
+ result = pusherror(L, "get_dir getcwd() failed");
+ break;
+ }
+ /* ERANGE = insufficient buffer capacity, double size and retry */
+ size *= 2;
}
+ free(path);
+ return result;
+#endif
}
/*
** 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) {
+static FILE *check_file(lua_State * L, int idx, const char *funcname)
+{
#if LUA_VERSION_NUM == 501
- FILE **fh = (FILE **)luaL_checkudata (L, idx, "FILE*");
- if (*fh == NULL) {
- luaL_error (L, "%s: closed file", funcname);
- return 0;
- } else
- return *fh;
-#elif LUA_VERSION_NUM >= 502 && LUA_VERSION_NUM <= 503
- luaL_Stream *fh = (luaL_Stream *)luaL_checkudata (L, idx, "FILE*");
- if (fh->closef == 0 || fh->f == NULL) {
- luaL_error (L, "%s: closed file", funcname);
- return 0;
- } else
- return fh->f;
+ FILE **fh = (FILE **) luaL_checkudata(L, idx, "FILE*");
+ if (*fh == NULL) {
+ luaL_error(L, "%s: closed file", funcname);
+ return 0;
+ } else
+ return *fh;
+#elif LUA_VERSION_NUM >= 502 && LUA_VERSION_NUM <= 504
+ luaL_Stream *fh = (luaL_Stream *) luaL_checkudata(L, idx, "FILE*");
+ if (fh->closef == 0 || fh->f == NULL) {
+ luaL_error(L, "%s: closed file", funcname);
+ return 0;
+ } else
+ return fh->f;
#else
#error unsupported Lua version
#endif
@@ -226,90 +340,114 @@ static FILE *check_file (lua_State *L, int idx, const char *funcname) {
/*
**
*/
-static int _file_lock (lua_State *L, FILE *fh, const char *mode, const long start, long len, const char *funcname) {
- int code;
+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);
+ /* 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);
+ code = locking(fileno(fh), lkmode, len);
#else
- code = _locking (fileno(fh), lkmode, len);
+ 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);
+ 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);
+ 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;
+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);
- 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;
+ 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);
+ fd = CreateFile(ln, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
+ FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE, NULL);
free(ln);
- lock = (lfs_Lock*)lua_newuserdata(L, sizeof(lfs_Lock));
+ if (fd == INVALID_HANDLE_VALUE) {
+ return lfs_win32_pusherror(L);
+ }
+ lock = (lfs_Lock *) lua_newuserdata(L, sizeof(lfs_Lock));
lock->fd = fd;
- luaL_getmetatable (L, LOCK_METATABLE);
- lua_setmetatable (L, -2);
+ luaL_getmetatable(L, LOCK_METATABLE);
+ lua_setmetatable(L, -2);
return 1;
}
-static int lfs_unlock_dir(lua_State *L) {
- lfs_Lock *lock = (lfs_Lock *)luaL_checkudata(L, 1, LOCK_METATABLE);
- if(lock->fd != INVALID_HANDLE_VALUE) {
+
+static int lfs_unlock_dir(lua_State * L)
+{
+ lfs_Lock *lock = (lfs_Lock *) luaL_checkudata(L, 1, LOCK_METATABLE);
+ if (lock->fd != INVALID_HANDLE_VALUE) {
CloseHandle(lock->fd);
- lock->fd=INVALID_HANDLE_VALUE;
+ lock->fd = INVALID_HANDLE_VALUE;
}
return 0;
}
@@ -317,30 +455,38 @@ static int lfs_unlock_dir(lua_State *L) {
typedef struct lfs_Lock {
char *ln;
} lfs_Lock;
-static int lfs_lock_dir(lua_State *L) {
+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;
+ 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;
+ 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);
+ luaL_getmetatable(L, LOCK_METATABLE);
+ lua_setmetatable(L, -2);
return 1;
}
-static int lfs_unlock_dir(lua_State *L) {
- lfs_Lock *lock = (lfs_Lock *)luaL_checkudata(L, 1, LOCK_METATABLE);
- if(lock->ln) {
+
+static int lfs_unlock_dir(lua_State * L)
+{
+ lfs_Lock *lock = (lfs_Lock *) luaL_checkudata(L, 1, LOCK_METATABLE);
+ if (lock->ln) {
unlink(lock->ln);
free(lock->ln);
lock->ln = NULL;
@@ -349,33 +495,30 @@ static int lfs_unlock_dir(lua_State *L) {
}
#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};
+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]);
+ int res = lfs_setmode(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;
+ return 2;
}
}
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;
+ return pusherror(L, NULL);
}
}
-static int lfs_f_setmode(lua_State *L) {
+static int lfs_f_setmode(lua_State * L)
+{
return lfs_g_setmode(L, check_file(L, 1, "setmode"), 2);
}
@@ -386,19 +529,20 @@ static int lfs_f_setmode(lua_State *L) {
** @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 = (long) luaL_optinteger (L, 3, 0);
- long len = (long) luaL_optinteger (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;
- }
+static int file_lock(lua_State * L)
+{
+ FILE *fh = check_file(L, 1, "lock");
+ const char *mode = luaL_checkstring(L, 2);
+ const long start = (long) luaL_optinteger(L, 3, 0);
+ long len = (long) luaL_optinteger(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;
+ }
}
@@ -408,18 +552,19 @@ static int file_lock (lua_State *L) {
** @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 = (long) luaL_optinteger (L, 2, 0);
- long len = (long) luaL_optinteger (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;
- }
+static int file_unlock(lua_State * L)
+{
+ FILE *fh = check_file(L, 1, "unlock");
+ const long start = (long) luaL_optinteger(L, 2, 0);
+ long len = (long) luaL_optinteger(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;
+ }
}
@@ -429,15 +574,40 @@ static int file_unlock (lua_State *L) {
** @param #2 Name of link.
** @param #3 True if link is symbolic (optional).
*/
-static int make_link(lua_State *L)
+static int make_link(lua_State * L)
{
+ const char *oldpath = luaL_checkstring(L, 1);
+ const char *newpath = luaL_checkstring(L, 2);
#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);
+ return pushresult(L,
+ (lua_toboolean(L, 3) ? symlink : link) (oldpath,
+ newpath),
+ NULL);
#else
- return pusherror(L, "make_link is not supported on Windows");
+ int symbolic = lua_toboolean(L, 3);
+ STAT_STRUCT oldpathinfo;
+ int is_dir = 0;
+ if (STAT_FUNC(oldpath, &oldpathinfo) == 0) {
+ is_dir = S_ISDIR(oldpathinfo.st_mode) != 0;
+ }
+ if (!symbolic && is_dir) {
+ lua_pushnil(L);
+ lua_pushstring(L,
+ "hard links to directories are not supported on Windows");
+ return 2;
+ }
+
+ int result = symbolic ? CreateSymbolicLink(newpath, oldpath, is_dir)
+ : CreateHardLink(newpath, oldpath, NULL);
+
+ if (result) {
+ return pushresult(L, result, NULL);
+ } else {
+ lua_pushnil(L);
+ lua_pushstring(L, symbolic ? "make_link CreateSymbolicLink() failed"
+ : "make_link CreateHardLink() failed");
+ return 2;
+ }
#endif
}
@@ -446,22 +616,10 @@ static int make_link(lua_State *L)
** 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;
+static int make_dir(lua_State * L)
+{
+ const char *path = luaL_checkstring(L, 1);
+ return pushresult(L, lfs_mkdir(path), NULL);
}
@@ -469,65 +627,57 @@ static int make_dir (lua_State *L) {
** 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;
+static int remove_dir(lua_State * L)
+{
+ const char *path = luaL_checkstring(L, 1);
+ return pushresult(L, rmdir(path), NULL);
}
/*
** Directory iterator
*/
-static int dir_iter (lua_State *L) {
+static int dir_iter(lua_State * L)
+{
#ifdef _WIN32
- struct _finddata_t c_file;
+ struct _finddata_t c_file;
#else
- struct dirent *entry;
+ struct dirent *entry;
#endif
- dir_data *d = (dir_data *)luaL_checkudata (L, 1, DIR_METATABLE);
- luaL_argcheck (L, d->closed == 0, 1, "closed directory");
+ 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;
- }
- }
+ 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;
- }
+ 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
}
@@ -535,378 +685,498 @@ static int dir_iter (lua_State *L) {
/*
** Closes directory iterators
*/
-static int dir_close (lua_State *L) {
- dir_data *d = (dir_data *)lua_touserdata (L, 1);
+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);
- }
+ if (!d->closed && d->hFile) {
+ _findclose(d->hFile);
+ }
#else
- if (!d->closed && d->dir) {
- closedir (d->dir);
- }
+ if (!d->closed && d->dir) {
+ closedir(d->dir);
+ }
#endif
- d->closed = 1;
- return 0;
+ 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;
+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);
+ 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));
+ d->dir = opendir(path);
+ if (d->dir == NULL)
+ luaL_error(L, "cannot open %s: %s", path, strerror(errno));
+#endif
+#if LUA_VERSION_NUM >= 504
+ lua_pushnil(L);
+ lua_pushvalue(L, -2);
+ return 4;
+#else
+ return 2;
#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;
+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");
+
+#if LUA_VERSION_NUM >= 504
+ lua_pushcfunction(L, dir_close);
+ lua_setfield(L, -2, "__close");
+#endif
+ 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;
+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) {
+static const char *mode2string(unsigned short mode)
+{
#else
-static const char *mode2string (mode_t mode) {
+static const char *mode2string(mode_t mode)
+{
#endif
- if ( S_ISREG(mode) )
+ if (S_ISREG(mode))
return "file";
- else if ( S_ISDIR(mode) )
+ else if (S_ISDIR(mode))
return "directory";
- else if ( S_ISLNK(mode) )
- return "link";
- else if ( S_ISSOCK(mode) )
+ 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 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";
+ return "other";
}
/*
-** Set access time and modification values for file
+** Set access time and modification values for a file.
+** @param #1 File path.
+** @param #2 Access time in seconds, current time is used if missing.
+** @param #3 Modification time in seconds, access time is used if missing.
*/
-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 = luaL_optnumber (L, 2, 0);
- utb.modtime = (time_t) luaL_optinteger (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;
+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_optinteger(L, 3, utb.actime);
+ buf = &utb;
+ }
+
+ return pushresult(L, utime(file, buf), NULL);
}
/* inode protection mode */
-static void push_st_mode (lua_State *L, STAT_STRUCT *info) {
- lua_pushstring (L, mode2string (info->st_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_pushinteger (L, (lua_Integer) info->st_dev);
+static void push_st_dev(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_dev);
}
+
/* inode's number */
-static void push_st_ino (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer) info->st_ino);
+static void push_st_ino(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_ino);
}
+
/* number of hard links to the file */
-static void push_st_nlink (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer)info->st_nlink);
+static void push_st_nlink(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_nlink);
}
+
/* user-id of owner */
-static void push_st_uid (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer)info->st_uid);
+static void push_st_uid(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_uid);
}
+
/* group-id of owner */
-static void push_st_gid (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer)info->st_gid);
+static void push_st_gid(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_gid);
}
+
/* device type, for special file inode */
-static void push_st_rdev (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer) info->st_rdev);
+static void push_st_rdev(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_rdev);
}
+
/* time of last access */
-static void push_st_atime (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer) info->st_atime);
+static void push_st_atime(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_atime);
}
+
/* time of last data modification */
-static void push_st_mtime (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer) info->st_mtime);
+static void push_st_mtime(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_mtime);
}
+
/* time of last file status change */
-static void push_st_ctime (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer) info->st_ctime);
+static void push_st_ctime(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_ctime);
}
+
/* file size, in bytes */
-static void push_st_size (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer)info->st_size);
+static void push_st_size(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_size);
}
+
#ifndef _WIN32
/* blocks allocated for file */
-static void push_st_blocks (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer)info->st_blocks);
+static void push_st_blocks(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_blocks);
}
+
/* optimal file system I/O blocksize */
-static void push_st_blksize (lua_State *L, STAT_STRUCT *info) {
- lua_pushinteger (L, (lua_Integer)info->st_blksize);
+static void push_st_blksize(lua_State * L, STAT_STRUCT * info)
+{
+ lua_pushinteger(L, (lua_Integer) info->st_blksize);
}
#endif
/*
-** Convert the inode protection mode to a permission list.
-*/
+ ** Convert the inode protection mode to a permission list.
+ */
#ifdef _WIN32
-static const char *perm2string (unsigned short mode) {
+static const char *perm2string(unsigned short mode)
+{
static char perms[10] = "---------";
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'; }
+ 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 const char *perm2string(mode_t mode)
+{
static char perms[10] = "---------";
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';
+ 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));
+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);
+typedef void (*_push_function)(lua_State * L, STAT_STRUCT * info);
struct _stat_members {
- const char *name;
- _push_function push;
+ 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 },
+ { "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 },
+ { "blocks", push_st_blocks },
+ { "blksize", push_st_blksize },
#endif
- { NULL, NULL }
+ { NULL, NULL }
};
/*
** Get file or symbolic link information
*/
-static int _file_info_ (lua_State *L, int (*st)(const char*, STAT_STRUCT*)) {
- STAT_STRUCT info;
- const char *file = luaL_checkstring (L, 1);
- int i;
-
- if (st(file, &info)) {
- lua_pushnil (L);
- lua_pushfstring (L, "cannot obtain information from file `%s'", file);
- return 2;
- }
- if (lua_isstring (L, 2)) {
- const char *member = lua_tostring (L, 2);
- for (i = 0; members[i].name; i++) {
- if (strcmp(members[i].name, member) == 0) {
- /* push member value and return */
- members[i].push (L, &info);
- return 1;
- }
- }
- /* member not found */
- return luaL_error(L, "invalid attribute name");
- }
- /* creates a table if none is given */
- if (!lua_istable (L, 2)) {
- 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);
- }
+static int _file_info_(lua_State * L,
+ int (*st)(const char *, STAT_STRUCT *))
+{
+ STAT_STRUCT info;
+ const char *file = luaL_checkstring(L, 1);
+ int i;
+
+ if (st(file, &info)) {
+ lua_pushnil(L);
+ lua_pushfstring(L, "cannot obtain information from file '%s': %s",
+ file, strerror(errno));
+ lua_pushinteger(L, errno);
+ return 3;
+ }
+ if (lua_isstring(L, 2)) {
+ const char *member = lua_tostring(L, 2);
+ for (i = 0; members[i].name; i++) {
+ if (strcmp(members[i].name, member) == 0) {
+ /* push member value and return */
+ members[i].push(L, &info);
return 1;
+ }
+ }
+ /* member not found */
+ return luaL_error(L, "invalid attribute name '%s'", member);
+ }
+ /* creates a table if none is given, removes extra arguments */
+ lua_settop(L, 2);
+ if (!lua_istable(L, 2)) {
+ 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);
+static int file_info(lua_State * L)
+{
+ return _file_info_(L, STAT_FUNC);
}
/*
+** Push the symlink target to the top of the stack.
+** Assumes the file name is at position 1 of the stack.
+** Returns 1 if successful (with the target on top of the stack),
+** 0 on failure (with stack unchanged, and errno set).
+*/
+static int push_link_target(lua_State * L)
+{
+ const char *file = luaL_checkstring(L, 1);
+#ifdef _WIN32
+ HANDLE h = CreateFile(file, GENERIC_READ,
+ FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+ OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+ if (h == INVALID_HANDLE_VALUE) {
+ return lfs_win32_pusherror(L);
+ }
+#endif
+ char *target = NULL;
+ int tsize, size = 256; /* size = initial buffer capacity */
+ int ok = 0;
+ while (!ok) {
+ char *target2 = realloc(target, size);
+ if (!target2) { /* failed to allocate */
+ break;
+ }
+ target = target2;
+#ifdef _WIN32
+ tsize = GetFinalPathNameByHandle(h, target, size, FILE_NAME_OPENED);
+#else
+ tsize = readlink(file, target, size);
+#endif
+ if (tsize < 0) { /* a readlink() error occurred */
+ break;
+ }
+ if (tsize < size) {
+#ifdef _WIN32
+ if (tsize > 4 && strncmp(target, "\\\\?\\", 4) == 0) {
+ memmove_s(target, tsize - 3, target + 4, tsize - 3);
+ tsize -= 4;
+ }
+#endif
+ ok = 1;
+ break;
+ }
+ /* possibly truncated readlink() result, double size and retry */
+ size *= 2;
+ }
+ if (ok) {
+ target[tsize] = '\0';
+ lua_pushlstring(L, target, tsize);
+ }
+#ifdef _WIN32
+ CloseHandle(h);
+#endif
+ free(target);
+ return ok;
+}
+
+/*
** Get symbolic link information using lstat.
*/
-static int link_info (lua_State *L) {
- return _file_info_ (L, LSTAT_FUNC);
+static int link_info(lua_State * L)
+{
+ int ret;
+ if (lua_isstring(L, 2) && (strcmp(lua_tostring(L, 2), "target") == 0)) {
+ int ok = push_link_target(L);
+ return ok ? 1 : pusherror(L, "could not obtain link target");
+ }
+ ret = _file_info_(L, LSTAT_FUNC);
+ if (ret == 1 && lua_type(L, -1) == LUA_TTABLE) {
+ int ok = push_link_target(L);
+ if (ok) {
+ lua_setfield(L, -2, "target");
+ }
+ }
+ return ret;
}
/*
** 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 void set_info(lua_State * L)
+{
+ lua_pushliteral(L, "Copyright (C) 2003-2017 Kepler Project");
+ lua_setfield(L, -2, "_COPYRIGHT");
+ 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_setfield(L, -2, "_DESCRIPTION");
+ lua_pushliteral(L, "LuaFileSystem " LFS_VERSION);
+ lua_setfield(L, -2, "_VERSION");
}
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},
+ { "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;
+LFS_EXPORT int luaopen_lfs(lua_State * L)
+{
+ dir_create_meta(L);
+ lock_create_meta(L);
+ new_lib(L, fslib);
+ lua_pushvalue(L, -1);
+ lua_setglobal(L, LFS_LIBNAME);
+ set_info(L);
+ return 1;
}