Hello, I was just building a little application that tries to mimic "touch"
behaviour in Windows, its source is attached to this message.
Since it is a command line utility I'm building it in the following way,
without specifying -mwindows:
x86_64-w64-mingw32-g++ -D_UNICODE -DUNICODE -municode touch.cpp
Which fails, it looks for wWinMain() even though it isn't an application
with a graphical interface. Specifying -mconsole leads to the same result.
I was able to build the utility, adding manually a wWinMain() and using the
CommandLineToArgvW() function because the program depends on "argc" and
"argv". I thought it was "fixed", but the built executable doesn't work,
behaves as if there were always no arguments to it (shows usage).
Finding that strange... I looked at the subsystem of the binary which is
reported as a console application:
$ x86_64-w64-mingw32-objdump.exe -x a.exe | findstr /i "^subsystem"
Subsystem 00000003 (Windows CUI)
How come the compiler expects a wWinMain() function when it is a console
application?
PS. Sources origin:
http://www.codeproject.com/Articles/3258/Touch-for-Windows
// touch.cpp : Defines the entry point for the console application.
//
#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>
#include <io.h>
#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
#include <windows.h>
// Matches the command line arguments/options
#define OPT_MODIFY_ATIME (1 << 0)
#define OPT_MODIFY_MTIME (1 << 1)
#define OPT_MODIFY_CTIME (1 << 2)
#define OPT_NO_CREATE (1 << 3)
#define OPT_USE_TEMPLATE (1 << 4)
#define OPT_USER_TIME (1 << 5)
#define OPT_DIR_IF_NOT_EXIST (1 << 6)
// The magic function which does all the touching
static DWORD touch(LPCTSTR lpszFile, FILETIME* atime, FILETIME* mtime, FILETIME* ctime, WORD wOpts)
{
SetLastError(ERROR_SUCCESS);
DWORD dwFileAttributes = GetFileAttributes(lpszFile);
DWORD dwErr = GetLastError();
if(dwFileAttributes == INVALID_FILE_ATTRIBUTES && dwErr != ERROR_FILE_NOT_FOUND)
return dwErr;
bool bUpdateOrCreateDirectory =
(OPT_DIR_IF_NOT_EXIST & wOpts) && dwFileAttributes == INVALID_FILE_ATTRIBUTES ||
dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY && dwFileAttributes != INVALID_FILE_ATTRIBUTES;
// If there is no directory, create it!
if(bUpdateOrCreateDirectory && dwFileAttributes == INVALID_FILE_ATTRIBUTES) {
SetLastError(ERROR_SUCCESS);
BOOL bResult = CreateDirectory(lpszFile, NULL);
if(!bResult) {
DWORD dwErr = GetLastError();
if(dwErr != ERROR_ALREADY_EXISTS)
return dwErr;
} else {
// We're done, because we obviously created a directory!
return ERROR_SUCCESS;
}
}
SetLastError(ERROR_SUCCESS);
HANDLE hFile = CreateFile(
lpszFile,
GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
((wOpts & OPT_NO_CREATE) || bUpdateOrCreateDirectory) ? OPEN_EXISTING : OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL | (bUpdateOrCreateDirectory ? FILE_FLAG_BACKUP_SEMANTICS : 0),
0);
DWORD dwRetVal = GetLastError();
// Check for CreateFile() special cases
if(hFile == INVALID_HANDLE_VALUE) {
if((wOpts & OPT_NO_CREATE) && dwRetVal == ERROR_FILE_NOT_FOUND)
return ERROR_SUCCESS; // not an error
else if(dwRetVal == ERROR_ALREADY_EXISTS)
dwRetVal = ERROR_SUCCESS; // not an error according to MSDN docs
return dwRetVal;
}
// Is there any template timestamp?
if(atime || mtime || ctime) {
BOOL bResult = SetFileTime(
hFile,
(wOpts & OPT_MODIFY_CTIME) ? ctime : NULL,
(wOpts & OPT_MODIFY_ATIME) ? atime : NULL,
(wOpts & OPT_MODIFY_MTIME) ? mtime : NULL
);
if(bResult)
dwRetVal = ERROR_SUCCESS;
else
dwRetVal = GetLastError();
}
CloseHandle(hFile);
return dwRetVal;
}
// Prints the usage/help and an optional error message
static void ShowUsage(LPCTSTR lpszErrorMessage = NULL)
{
if(lpszErrorMessage)
_tprintf(_T("Error: %s\n"), lpszErrorMessage);
_tprintf(_T("Usage: touch [-h] [-a] [-C] [-m] [-c] [-r file] [-d] [-t [[CC]YY]MMDDhhmm[.SS]] <file> [file 2] [file 3] ... [file N]\n"));
_tprintf(_T(" -a: Modify access time\n"));
_tprintf(_T(" -C: Modify creation time\n"));
_tprintf(_T(" -m: Modify modification time\n"));
_tprintf(_T(" -c: Do not create file if not found\n"));
_tprintf(_T(" -r: Use file or directory as time source\n"));
_tprintf(_T(" -d: If target doesn't exist, create a directory\n"));
_tprintf(_T(" -t: Use specified time instead of current time\n"));
_tprintf(_T(" -h: This help text\n"));
_tprintf(_T("\n"));
_tprintf(_T("Options -r and -t are mutually exclusive.\n"));
_tprintf(_T("By default, all times will be modified (access, creation and modification).\n"));
}
// Prints a message translated from a Windows Error code, then prints the usage
static void PrintError(LPCTSTR lpszInfo, DWORD err)
{
_tprintf(_T("Error: %s: "), lpszInfo);
LPVOID lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL);
_tprintf(_T("%s\n"), (LPCTSTR)lpMsgBuf);
LocalFree( lpMsgBuf );
}
static bool IsGlobPattern(LPCTSTR lpszGlob)
{
return _tcschr(lpszGlob, _T('*')) != NULL || _tcschr(lpszGlob, _T('?'));
}
// Parses the command line arguments. This function expects
// that "argv[0]" is not included. (argv[0] = name of called executable)
static bool ParseOptions(int argc, LPTSTR argv[],
int& iFileArg,
LPTSTR& lpszTemplateFile,
LPTSTR& lpszTime,
WORD& wOpts)
{
lpszTime = lpszTemplateFile = NULL;
wOpts = 0;
if(!argc) {
ShowUsage(_T("No file(s) specified"));
return false;
} else if(argc == 1) {
if(!_tcscmp(argv[0], _T("-h"))) {
ShowUsage(_T("Help Requested"));
return false;
} else if(argv[0][0] == _T('-')) {
ShowUsage(_T("Not enough arguments"));
return false;
}
iFileArg = 0;
} else {
int i;
for(i = 0; i < argc; ++i) {
LPTSTR curr_arg = argv[i];
LPTSTR next_arg = (i + 1 < (argc - 1) ? argv[i + 1] : NULL);
if(curr_arg[0] == '-') {
if(!_tcscmp(curr_arg, _T("-a"))) {
wOpts |= OPT_MODIFY_ATIME;
} else if(!_tcscmp(curr_arg, _T("-C"))) {
wOpts |= OPT_MODIFY_CTIME;
} else if(!_tcscmp(curr_arg, _T("-m"))) {
wOpts |= OPT_MODIFY_MTIME;
} else if(!_tcscmp(curr_arg, _T("-c"))) {
wOpts |= OPT_NO_CREATE;
} else if(!_tcscmp(curr_arg, _T("-d"))) {
wOpts |= OPT_DIR_IF_NOT_EXIST;
} else if(!_tcscmp(curr_arg, _T("-r"))) {
wOpts |= OPT_USE_TEMPLATE;
lpszTemplateFile = next_arg;
++i;
} else if(!_tcscmp(curr_arg, _T("-t"))) {
wOpts |= OPT_USER_TIME;
lpszTime = next_arg;
++i;
} else if(!_tcscmp(curr_arg, _T("-h"))) {
ShowUsage(_T("Help Requested"));
return false;
} else {
ShowUsage(_T("Unknown argument"));
return false;
}
} else
break;
}
iFileArg = i;
}
if(iFileArg >= argc) {
ShowUsage(_T("No file(s) specified!"));
return false;
}
if((wOpts & OPT_USE_TEMPLATE) && (wOpts & OPT_USER_TIME)) {
ShowUsage(_T("You may not specify both -r and -t"));
return false;
}
if((wOpts & OPT_USE_TEMPLATE) && !lpszTemplateFile) {
ShowUsage(_T("You must specify a file name together with -r"));
return false;
}
if((wOpts & OPT_USER_TIME) && !lpszTime) {
ShowUsage(_T("You must specify a timestamp together with -t"));
return false;
}
// If -a, -C and -m wasn't specified, then all of them are implied
if(!(wOpts & OPT_MODIFY_ATIME) &&
!(wOpts & OPT_MODIFY_MTIME) &&
!(wOpts & OPT_MODIFY_CTIME))
wOpts |= (OPT_MODIFY_ATIME | OPT_MODIFY_MTIME | OPT_MODIFY_CTIME);
return true;
}
// Gets file times from a file
static bool GetFileTimes(LPCTSTR lpszTemplateFileName,
FILETIME* tsAtime,
FILETIME* tsMtime,
FILETIME* tsCtime)
{
HANDLE hFile = CreateFile(
lpszTemplateFileName,
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_BACKUP_SEMANTICS,
0);
if(INVALID_HANDLE_VALUE == hFile) {
PrintError(lpszTemplateFileName, GetLastError());
ShowUsage();
return false;
}
if(!GetFileTime(hFile, tsCtime, tsAtime, tsMtime)) {
PrintError(lpszTemplateFileName, GetLastError());
ShowUsage();
CloseHandle(hFile);
return false;
}
CloseHandle(hFile);
return true;
}
// Parses a date/time string into a FILETIME structure
// Parses the syntax: [[CC]YY]MMDDhhmm[.SS]
// Warning: This is no masterpiece. No regular expressions or any other
// fancy features used.
static bool ParseTime(LPCTSTR lpszTime, FILETIME* ts)
{
size_t nLen = _tcslen(lpszTime);
// Verify length
if(nLen < 8 || nLen > 15) {
ShowUsage(_T("Invalid time format"));
return false;
}
// Verify format
bool bSeenDot = false;
size_t nDotIndex = size_t(-1);
for(size_t i = 0; i < nLen; ++i) {
if(lpszTime[i] == _T('.')) {
if(bSeenDot) {
ShowUsage(_T("Invalid time format"));
return false;
} else {
bSeenDot = true;
nDotIndex = i;
}
} else if(!_istdigit(lpszTime[i])) {
ShowUsage(_T("Invalid time format"));
return false;
}
}
size_t nBeforeDotLength;
size_t nAfterDotLength;
if(bSeenDot) {
nBeforeDotLength = nDotIndex;
nAfterDotLength = nLen - (nDotIndex + 1);
} else {
nBeforeDotLength = nLen;
nAfterDotLength = 0;
}
if(bSeenDot && nAfterDotLength != 2 ||
nBeforeDotLength != 8 && nBeforeDotLength != 10 && nBeforeDotLength != 12) {
ShowUsage(_T("Invalid time format"));
return false;
}
WORD nCentury;
WORD nYear;
WORD nMonth;
WORD nDay;
WORD nHour;
WORD nMinute;
WORD nSeconds;
int nIndex = 0;
// First get defaults for century and year (= this year) in case uses did not specify them
SYSTEMTIME st;
GetSystemTime(&st);
nCentury = st.wYear / 100;
nYear = st.wYear % 100;
switch(nBeforeDotLength) { // Cases fall through... (no typo!)
case 12:
nCentury = (lpszTime[nIndex++] - _T('0')) * 10;
nCentury += (lpszTime[nIndex++] - _T('0'));
case 10:
nYear = (lpszTime[nIndex++] - _T('0')) * 10;
nYear += (lpszTime[nIndex++] - _T('0'));
case 8:
nMonth = (lpszTime[nIndex++] - _T('0')) * 10;
nMonth += (lpszTime[nIndex++] - _T('0'));
nDay = (lpszTime[nIndex++] - _T('0')) * 10;
nDay += (lpszTime[nIndex++] - _T('0'));
nHour = (lpszTime[nIndex++] - _T('0')) * 10;
nHour += (lpszTime[nIndex++] - _T('0'));
nMinute = (lpszTime[nIndex++] - _T('0')) * 10;
nMinute += (lpszTime[nIndex++] - _T('0'));
break;
default: // Should not end up here!
ShowUsage(_T("Invalid time format"));
return false;
}
if(2 == nAfterDotLength) {
nSeconds = (lpszTime[nDotIndex + 1] - _T('0')) * 10;
nSeconds += (lpszTime[nDotIndex + 2] - _T('0'));
} else {
nSeconds = 0;
}
st.wYear = nCentury * 100 + nYear;
st.wMonth = nMonth;
st.wDay = nDay;
st.wHour = nHour;
st.wMinute = nMinute;
st.wSecond = nSeconds;
st.wMilliseconds = 0;
FILETIME ft;
if(!SystemTimeToFileTime(&st, &ft)) {
PrintError(_T("Specified date"), GetLastError());
ShowUsage();
return false;
}
if(!LocalFileTimeToFileTime(&ft, ts)) {
PrintError(_T("Specified date"), GetLastError());
ShowUsage();
return false;
}
return true;
}
int _tmain(int argc, LPTSTR argv[])
{
LPTSTR lpszTemplateFile;
LPTSTR lpszTime;
int iFileArg;
WORD wOpts;
FILETIME tsUserTime;
FILETIME tsATime;
FILETIME tsMTime;
FILETIME tsCTime;
if(!ParseOptions(argc - 1, argv + 1, iFileArg, lpszTemplateFile, lpszTime, wOpts))
return -1;
++iFileArg; // Adjust for executable
if(wOpts & OPT_USER_TIME) {
if(!ParseTime(lpszTime, &tsUserTime))
return -1;
tsATime = tsMTime = tsCTime = tsUserTime;
} else if(wOpts & OPT_USE_TEMPLATE) {
if(!GetFileTimes(lpszTemplateFile, &tsATime, &tsMTime, &tsCTime))
return -1;
} else {
SYSTEMTIME now;
GetSystemTime(&now);
if(!SystemTimeToFileTime(&now, &tsUserTime)) {
PrintError(_T("SystemTimeToFileTime()"), GetLastError());
ShowUsage();
return -1;
}
tsATime = tsMTime = tsCTime = tsUserTime;
}
for(int i = iFileArg; i < argc; ++i) {
LPCTSTR lpszFile = argv[i];
TCHAR szPath[_MAX_PATH];
TCHAR szDrive[_MAX_DRIVE];
TCHAR szDir[_MAX_DIR];
TCHAR szFname[_MAX_FNAME];
TCHAR szExt[_MAX_EXT];
#ifdef _UNICODE
struct _wfinddata_t sFile;
#else
struct _finddata_t sFile;
#endif
if(IsGlobPattern(lpszFile)) {
_tfullpath(szPath, lpszFile, _MAX_PATH);
_tsplitpath(szPath, szDrive, szDir, szFname, szExt);
intptr_t hFile = _tfindfirst(szPath, &sFile);
if(hFile != -1L) {
do {
if(sFile.attrib & _A_SUBDIR) continue;
TCHAR szIterPath[_MAX_PATH];
TCHAR szIterFname[_MAX_FNAME];
TCHAR szIterExt[_MAX_EXT];
_tsplitpath(sFile.name, NULL, NULL, szIterFname, szIterExt);
_tmakepath(szIterPath, szDrive, szDir, szIterFname, szIterExt);
DWORD dwResult = touch(
szIterPath,
(wOpts & OPT_MODIFY_ATIME) ? &tsATime : NULL,
(wOpts & OPT_MODIFY_MTIME) ? &tsMTime : NULL,
(wOpts & OPT_MODIFY_CTIME) ? &tsCTime : NULL,
wOpts
);
if(ERROR_SUCCESS != dwResult) {
PrintError(szIterPath, dwResult);
}
} while(_tfindnext(hFile, &sFile) == 0);
_findclose(hFile);
}
} else {
DWORD dwResult = touch(
lpszFile,
(wOpts & OPT_MODIFY_ATIME) ? &tsATime : NULL,
(wOpts & OPT_MODIFY_MTIME) ? &tsMTime : NULL,
(wOpts & OPT_MODIFY_CTIME) ? &tsCTime : NULL,
wOpts
);
if(ERROR_SUCCESS != dwResult) {
PrintError(lpszFile, dwResult);
}
}
}
return 0;
}
// touch.cpp : Defines the entry point for the console application.
//
#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>
#include <io.h>
#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
#include <windows.h>
#include <shellapi.h>
// Matches the command line arguments/options
#define OPT_MODIFY_ATIME (1 << 0)
#define OPT_MODIFY_MTIME (1 << 1)
#define OPT_MODIFY_CTIME (1 << 2)
#define OPT_NO_CREATE (1 << 3)
#define OPT_USE_TEMPLATE (1 << 4)
#define OPT_USER_TIME (1 << 5)
#define OPT_DIR_IF_NOT_EXIST (1 << 6)
// The magic function which does all the touching
static DWORD touch(LPCTSTR lpszFile, FILETIME* atime, FILETIME* mtime, FILETIME* ctime, WORD wOpts)
{
SetLastError(ERROR_SUCCESS);
DWORD dwFileAttributes = GetFileAttributes(lpszFile);
DWORD dwErr = GetLastError();
if(dwFileAttributes == INVALID_FILE_ATTRIBUTES && dwErr != ERROR_FILE_NOT_FOUND)
return dwErr;
bool bUpdateOrCreateDirectory =
(OPT_DIR_IF_NOT_EXIST & wOpts) && dwFileAttributes == INVALID_FILE_ATTRIBUTES ||
dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY && dwFileAttributes != INVALID_FILE_ATTRIBUTES;
// If there is no directory, create it!
if(bUpdateOrCreateDirectory && dwFileAttributes == INVALID_FILE_ATTRIBUTES) {
SetLastError(ERROR_SUCCESS);
BOOL bResult = CreateDirectory(lpszFile, NULL);
if(!bResult) {
DWORD dwErr = GetLastError();
if(dwErr != ERROR_ALREADY_EXISTS)
return dwErr;
} else {
// We're done, because we obviously created a directory!
return ERROR_SUCCESS;
}
}
SetLastError(ERROR_SUCCESS);
HANDLE hFile = CreateFile(
lpszFile,
GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
((wOpts & OPT_NO_CREATE) || bUpdateOrCreateDirectory) ? OPEN_EXISTING : OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL | (bUpdateOrCreateDirectory ? FILE_FLAG_BACKUP_SEMANTICS : 0),
0);
DWORD dwRetVal = GetLastError();
// Check for CreateFile() special cases
if(hFile == INVALID_HANDLE_VALUE) {
if((wOpts & OPT_NO_CREATE) && dwRetVal == ERROR_FILE_NOT_FOUND)
return ERROR_SUCCESS; // not an error
else if(dwRetVal == ERROR_ALREADY_EXISTS)
dwRetVal = ERROR_SUCCESS; // not an error according to MSDN docs
return dwRetVal;
}
// Is there any template timestamp?
if(atime || mtime || ctime) {
BOOL bResult = SetFileTime(
hFile,
(wOpts & OPT_MODIFY_CTIME) ? ctime : NULL,
(wOpts & OPT_MODIFY_ATIME) ? atime : NULL,
(wOpts & OPT_MODIFY_MTIME) ? mtime : NULL
);
if(bResult)
dwRetVal = ERROR_SUCCESS;
else
dwRetVal = GetLastError();
}
CloseHandle(hFile);
return dwRetVal;
}
// Prints the usage/help and an optional error message
static void ShowUsage(LPCTSTR lpszErrorMessage = NULL)
{
if(lpszErrorMessage)
_tprintf(_T("Error: %s\n"), lpszErrorMessage);
_tprintf(_T("Usage: touch [-h] [-a] [-C] [-m] [-c] [-r file] [-d] [-t [[CC]YY]MMDDhhmm[.SS]] <file> [file 2] [file 3] ... [file N]\n"));
_tprintf(_T(" -a: Modify access time\n"));
_tprintf(_T(" -C: Modify creation time\n"));
_tprintf(_T(" -m: Modify modification time\n"));
_tprintf(_T(" -c: Do not create file if not found\n"));
_tprintf(_T(" -r: Use file or directory as time source\n"));
_tprintf(_T(" -d: If target doesn't exist, create a directory\n"));
_tprintf(_T(" -t: Use specified time instead of current time\n"));
_tprintf(_T(" -h: This help text\n"));
_tprintf(_T("\n"));
_tprintf(_T("Options -r and -t are mutually exclusive.\n"));
_tprintf(_T("By default, all times will be modified (access, creation and modification).\n"));
}
// Prints a message translated from a Windows Error code, then prints the usage
static void PrintError(LPCTSTR lpszInfo, DWORD err)
{
_tprintf(_T("Error: %s: "), lpszInfo);
LPVOID lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL);
_tprintf(_T("%s\n"), (LPCTSTR)lpMsgBuf);
LocalFree( lpMsgBuf );
}
static bool IsGlobPattern(LPCTSTR lpszGlob)
{
return _tcschr(lpszGlob, _T('*')) != NULL || _tcschr(lpszGlob, _T('?'));
}
// Parses the command line arguments. This function expects
// that "argv[0]" is not included. (argv[0] = name of called executable)
static bool ParseOptions(int argc, LPTSTR argv[],
int& iFileArg,
LPTSTR& lpszTemplateFile,
LPTSTR& lpszTime,
WORD& wOpts)
{
lpszTime = lpszTemplateFile = NULL;
wOpts = 0;
if(!argc) {
ShowUsage(_T("No file(s) specified"));
return false;
} else if(argc == 1) {
if(!_tcscmp(argv[0], _T("-h"))) {
ShowUsage(_T("Help Requested"));
return false;
} else if(argv[0][0] == _T('-')) {
ShowUsage(_T("Not enough arguments"));
return false;
}
iFileArg = 0;
} else {
int i;
for(i = 0; i < argc; ++i) {
LPTSTR curr_arg = argv[i];
LPTSTR next_arg = (i + 1 < (argc - 1) ? argv[i + 1] : NULL);
if(curr_arg[0] == '-') {
if(!_tcscmp(curr_arg, _T("-a"))) {
wOpts |= OPT_MODIFY_ATIME;
} else if(!_tcscmp(curr_arg, _T("-C"))) {
wOpts |= OPT_MODIFY_CTIME;
} else if(!_tcscmp(curr_arg, _T("-m"))) {
wOpts |= OPT_MODIFY_MTIME;
} else if(!_tcscmp(curr_arg, _T("-c"))) {
wOpts |= OPT_NO_CREATE;
} else if(!_tcscmp(curr_arg, _T("-d"))) {
wOpts |= OPT_DIR_IF_NOT_EXIST;
} else if(!_tcscmp(curr_arg, _T("-r"))) {
wOpts |= OPT_USE_TEMPLATE;
lpszTemplateFile = next_arg;
++i;
} else if(!_tcscmp(curr_arg, _T("-t"))) {
wOpts |= OPT_USER_TIME;
lpszTime = next_arg;
++i;
} else if(!_tcscmp(curr_arg, _T("-h"))) {
ShowUsage(_T("Help Requested"));
return false;
} else {
ShowUsage(_T("Unknown argument"));
return false;
}
} else
break;
}
iFileArg = i;
}
if(iFileArg >= argc) {
ShowUsage(_T("No file(s) specified!"));
return false;
}
if((wOpts & OPT_USE_TEMPLATE) && (wOpts & OPT_USER_TIME)) {
ShowUsage(_T("You may not specify both -r and -t"));
return false;
}
if((wOpts & OPT_USE_TEMPLATE) && !lpszTemplateFile) {
ShowUsage(_T("You must specify a file name together with -r"));
return false;
}
if((wOpts & OPT_USER_TIME) && !lpszTime) {
ShowUsage(_T("You must specify a timestamp together with -t"));
return false;
}
// If -a, -C and -m wasn't specified, then all of them are implied
if(!(wOpts & OPT_MODIFY_ATIME) &&
!(wOpts & OPT_MODIFY_MTIME) &&
!(wOpts & OPT_MODIFY_CTIME))
wOpts |= (OPT_MODIFY_ATIME | OPT_MODIFY_MTIME | OPT_MODIFY_CTIME);
return true;
}
// Gets file times from a file
static bool GetFileTimes(LPCTSTR lpszTemplateFileName,
FILETIME* tsAtime,
FILETIME* tsMtime,
FILETIME* tsCtime)
{
HANDLE hFile = CreateFile(
lpszTemplateFileName,
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_BACKUP_SEMANTICS,
0);
if(INVALID_HANDLE_VALUE == hFile) {
PrintError(lpszTemplateFileName, GetLastError());
ShowUsage();
return false;
}
if(!GetFileTime(hFile, tsCtime, tsAtime, tsMtime)) {
PrintError(lpszTemplateFileName, GetLastError());
ShowUsage();
CloseHandle(hFile);
return false;
}
CloseHandle(hFile);
return true;
}
// Parses a date/time string into a FILETIME structure
// Parses the syntax: [[CC]YY]MMDDhhmm[.SS]
// Warning: This is no masterpiece. No regular expressions or any other
// fancy features used.
static bool ParseTime(LPCTSTR lpszTime, FILETIME* ts)
{
size_t nLen = _tcslen(lpszTime);
// Verify length
if(nLen < 8 || nLen > 15) {
ShowUsage(_T("Invalid time format"));
return false;
}
// Verify format
bool bSeenDot = false;
size_t nDotIndex = size_t(-1);
for(size_t i = 0; i < nLen; ++i) {
if(lpszTime[i] == _T('.')) {
if(bSeenDot) {
ShowUsage(_T("Invalid time format"));
return false;
} else {
bSeenDot = true;
nDotIndex = i;
}
} else if(!_istdigit(lpszTime[i])) {
ShowUsage(_T("Invalid time format"));
return false;
}
}
size_t nBeforeDotLength;
size_t nAfterDotLength;
if(bSeenDot) {
nBeforeDotLength = nDotIndex;
nAfterDotLength = nLen - (nDotIndex + 1);
} else {
nBeforeDotLength = nLen;
nAfterDotLength = 0;
}
if(bSeenDot && nAfterDotLength != 2 ||
nBeforeDotLength != 8 && nBeforeDotLength != 10 && nBeforeDotLength != 12) {
ShowUsage(_T("Invalid time format"));
return false;
}
WORD nCentury;
WORD nYear;
WORD nMonth;
WORD nDay;
WORD nHour;
WORD nMinute;
WORD nSeconds;
int nIndex = 0;
// First get defaults for century and year (= this year) in case uses did not specify them
SYSTEMTIME st;
GetSystemTime(&st);
nCentury = st.wYear / 100;
nYear = st.wYear % 100;
switch(nBeforeDotLength) { // Cases fall through... (no typo!)
case 12:
nCentury = (lpszTime[nIndex++] - _T('0')) * 10;
nCentury += (lpszTime[nIndex++] - _T('0'));
case 10:
nYear = (lpszTime[nIndex++] - _T('0')) * 10;
nYear += (lpszTime[nIndex++] - _T('0'));
case 8:
nMonth = (lpszTime[nIndex++] - _T('0')) * 10;
nMonth += (lpszTime[nIndex++] - _T('0'));
nDay = (lpszTime[nIndex++] - _T('0')) * 10;
nDay += (lpszTime[nIndex++] - _T('0'));
nHour = (lpszTime[nIndex++] - _T('0')) * 10;
nHour += (lpszTime[nIndex++] - _T('0'));
nMinute = (lpszTime[nIndex++] - _T('0')) * 10;
nMinute += (lpszTime[nIndex++] - _T('0'));
break;
default: // Should not end up here!
ShowUsage(_T("Invalid time format"));
return false;
}
if(2 == nAfterDotLength) {
nSeconds = (lpszTime[nDotIndex + 1] - _T('0')) * 10;
nSeconds += (lpszTime[nDotIndex + 2] - _T('0'));
} else {
nSeconds = 0;
}
st.wYear = nCentury * 100 + nYear;
st.wMonth = nMonth;
st.wDay = nDay;
st.wHour = nHour;
st.wMinute = nMinute;
st.wSecond = nSeconds;
st.wMilliseconds = 0;
FILETIME ft;
if(!SystemTimeToFileTime(&st, &ft)) {
PrintError(_T("Specified date"), GetLastError());
ShowUsage();
return false;
}
if(!LocalFileTimeToFileTime(&ft, ts)) {
PrintError(_T("Specified date"), GetLastError());
ShowUsage();
return false;
}
return true;
}
//int _tmain(int argc, LPTSTR argv[])
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow)
{
LPTSTR lpszTemplateFile;
LPTSTR lpszTime;
int iFileArg;
WORD wOpts;
FILETIME tsUserTime;
FILETIME tsATime;
FILETIME tsMTime;
FILETIME tsCTime;
int argc;
LPTSTR *argv = CommandLineToArgvW(lpCmdLine, &argc);
if(!ParseOptions(argc - 1, argv + 1, iFileArg, lpszTemplateFile, lpszTime, wOpts))
return -1;
++iFileArg; // Adjust for executable
if(wOpts & OPT_USER_TIME) {
if(!ParseTime(lpszTime, &tsUserTime))
return -1;
tsATime = tsMTime = tsCTime = tsUserTime;
} else if(wOpts & OPT_USE_TEMPLATE) {
if(!GetFileTimes(lpszTemplateFile, &tsATime, &tsMTime, &tsCTime))
return -1;
} else {
SYSTEMTIME now;
GetSystemTime(&now);
if(!SystemTimeToFileTime(&now, &tsUserTime)) {
PrintError(_T("SystemTimeToFileTime()"), GetLastError());
ShowUsage();
return -1;
}
tsATime = tsMTime = tsCTime = tsUserTime;
}
for(int i = iFileArg; i < argc; ++i) {
LPCTSTR lpszFile = argv[i];
TCHAR szPath[_MAX_PATH];
TCHAR szDrive[_MAX_DRIVE];
TCHAR szDir[_MAX_DIR];
TCHAR szFname[_MAX_FNAME];
TCHAR szExt[_MAX_EXT];
#ifdef _UNICODE
struct _wfinddata_t sFile;
#else
struct _finddata_t sFile;
#endif
if(IsGlobPattern(lpszFile)) {
_tfullpath(szPath, lpszFile, _MAX_PATH);
_tsplitpath(szPath, szDrive, szDir, szFname, szExt);
intptr_t hFile = _tfindfirst(szPath, &sFile);
if(hFile != -1L) {
do {
if(sFile.attrib & _A_SUBDIR) continue;
TCHAR szIterPath[_MAX_PATH];
TCHAR szIterFname[_MAX_FNAME];
TCHAR szIterExt[_MAX_EXT];
_tsplitpath(sFile.name, NULL, NULL, szIterFname, szIterExt);
_tmakepath(szIterPath, szDrive, szDir, szIterFname, szIterExt);
DWORD dwResult = touch(
szIterPath,
(wOpts & OPT_MODIFY_ATIME) ? &tsATime : NULL,
(wOpts & OPT_MODIFY_MTIME) ? &tsMTime : NULL,
(wOpts & OPT_MODIFY_CTIME) ? &tsCTime : NULL,
wOpts
);
if(ERROR_SUCCESS != dwResult) {
PrintError(szIterPath, dwResult);
}
} while(_tfindnext(hFile, &sFile) == 0);
_findclose(hFile);
}
} else {
DWORD dwResult = touch(
lpszFile,
(wOpts & OPT_MODIFY_ATIME) ? &tsATime : NULL,
(wOpts & OPT_MODIFY_MTIME) ? &tsMTime : NULL,
(wOpts & OPT_MODIFY_CTIME) ? &tsCTime : NULL,
wOpts
);
if(ERROR_SUCCESS != dwResult) {
PrintError(lpszFile, dwResult);
}
}
}
return 0;
}
------------------------------------------------------------------------------
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