feat: print elapsed time on fpack/funpack completion

tools/fpack.c

@@ -12,15 +12,33 @@
 #include <sys/stat.h>
 
 #ifdef _WIN32
+#include <windows.h>
 #define PROGRAM_NAME "fpack.exe"
 #define fpack_fseek64(f, off, whence) _fseeki64((f), (off), (whence))
 #define fpack_ftell64(f) _ftelli64((f))
 #else
+#include <time.h>
 #define PROGRAM_NAME "fpack"
 #define fpack_fseek64(f, off, whence) fseeko((f), (off_t)(off), (whence))
 #define fpack_ftell64(f) ftello((f))
 #endif
 
+static double now_seconds(void)
+{
+#ifdef _WIN32
+	LARGE_INTEGER freq, count;
+
+	QueryPerformanceFrequency(&freq);
+	QueryPerformanceCounter(&count);
+	return (double)count.QuadPart / (double)freq.QuadPart;
+#else
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	return (double)ts.tv_sec + (double)ts.tv_nsec / 1e9;
+#endif
+}
+
 #define FPACK_QUIET    (1u << 0)
 #define FPACK_VERBOSE  (1u << 1)
 #define FPACK_PROGRESS (1u << 2)
@@ -258,6 +276,7 @@ int main(int argc, char **argv)
 	size_t base_len;
 	struct fpk_writer *w;
 	int c;
+	double start_time;
 
 	while ((c = getopt_long(argc, argv, "o:pqvh", long_opts, NULL)) != -1) {
 		switch (c) {
@@ -287,6 +306,8 @@ int main(int argc, char **argv)
 	input_dir = argv[optind];
 	output = output_arg ? dup_str(output_arg) : derive_output_name(input_dir);
 
+	start_time = now_seconds();
+
 	base_len = strlen(input_dir);
 	while (base_len > 0 && IS_PATH_SEP(input_dir[base_len - 1]))
 		base_len--;
@@ -324,7 +345,8 @@ int main(int argc, char **argv)
 		printf("\n");
 
 	if (!(flags & FPACK_QUIET))
-		printf("wrote: %s (%lu entries)\n", output, (unsigned long)entry_count);
+		printf("wrote: %s (%lu entries) in %.3fs\n", output,
+		       (unsigned long)entry_count, now_seconds() - start_time);
 
 	free(output);
 	return 0;