108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <wchar.h>
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/* Print "message: last Win32 error" to stderr. */
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void
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oops(const wchar_t *message)
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{
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wchar_t *buf;
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DWORD error;
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buf = NULL;
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error = GetLastError();
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FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
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FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL, error, 0, (wchar_t *)&buf, 0, NULL);
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if (buf) {
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fwprintf(stderr, L"%ls: %ls", message, buf);
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LocalFree(buf);
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} else {
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/* FormatMessageW failed. */
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fwprintf(stderr, L"%ls: unknown error 0x%x\n",
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message, error);
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}
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}
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int
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setmodtime(const wchar_t *path)
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{
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FILETIME modtime;
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SYSTEMTIME st;
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HANDLE fh;
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wchar_t date[80], time[80];
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fh = CreateFileW(path, GENERIC_READ | FILE_WRITE_ATTRIBUTES,
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0, NULL, OPEN_EXISTING, 0, NULL);
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if (fh == INVALID_HANDLE_VALUE) {
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oops(path);
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return 1;
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}
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/*
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* Use GetFileTime() to get the file modification time.
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*/
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if (GetFileTime(fh, NULL, NULL, &modtime) == 0)
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goto fail;
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FileTimeToSystemTime(&modtime, &st);
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if (GetDateFormatW(LOCALE_USER_DEFAULT, DATE_LONGDATE, &st, NULL,
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date, sizeof date / sizeof date[0]) == 0 ||
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GetTimeFormatW(LOCALE_USER_DEFAULT, 0, &st, NULL,
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time, sizeof time / sizeof time[0]) == 0)
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goto fail;
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wprintf(L"%ls: Last modified at %s at %s (UTC).\n",
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path, date, time);
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/*
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* Use SetFileTime() to change the file modification time
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* to the current time.
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*/
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GetSystemTime(&st);
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if (GetDateFormatW(LOCALE_USER_DEFAULT, DATE_LONGDATE, &st, NULL,
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date, sizeof date / sizeof date[0]) == 0 ||
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GetTimeFormatW(LOCALE_USER_DEFAULT, 0, &st, NULL,
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time, sizeof time / sizeof time[0]) == 0)
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goto fail;
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SystemTimeToFileTime(&st, &modtime);
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if (SetFileTime(fh, NULL, NULL, &modtime) == 0)
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goto fail;
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wprintf(L"%ls: Changed to %s at %s (UTC).\n", path, date, time);
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CloseHandle(fh);
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return 0;
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fail:
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oops(path);
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CloseHandle(fh);
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return 1;
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}
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/*
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* Show the file modification time, and change it to the current time.
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*/
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int
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main()
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{
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int argc, i, r;
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wchar_t **argv;
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/* MinGW never provides wmain(argc, argv). */
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argv = CommandLineToArgvW(GetCommandLineW(), &argc);
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if (argv == NULL) {
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oops(L"CommandLineToArgvW");
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exit(1);
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}
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if (argc < 2) {
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fwprintf(stderr, L"usage: %ls file...\n", argv[0]);
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exit(1);
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}
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r = 0;
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for (i = 1; argv[i] != NULL; i++)
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if (setmodtime(argv[i])) r = 1;
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return r;
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}
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