feat: print elapsed time on fpack/funpack completion

tools/funpack.c

@@ -1,3 +1,7 @@
+#if !defined(_WIN32)
+#define _POSIX_C_SOURCE 200809L
+#endif
+
 #include "fpk.h"
 #include <errno.h>
 #include <getopt.h>
@@ -8,17 +12,31 @@
 
 #ifdef _WIN32
 #include <direct.h>
+#include <windows.h>
 #define MKDIR(path) _mkdir(path)
-#else
-#define MKDIR(path) mkdir(path, 0755)
-#endif
-
-#ifdef _WIN32
 #define PROGRAM_NAME "funpack.exe"
 #else
+#include <time.h>
+#define MKDIR(path) mkdir(path, 0755)
 #define PROGRAM_NAME "funpack"
 #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 FUNPACK_LIST     (1u << 0)
 #define FUNPACK_PROGRESS (1u << 1)
 #define FUNPACK_QUIET    (1u << 2)
@@ -192,6 +210,7 @@ int main(int argc, char **argv)
 	uint64_t count;
 	uint64_t i;
 	int c;
+	double start_time;
 
 	while ((c = getopt_long(argc, argv, "d:lpqvh", long_opts, NULL)) != -1) {
 		switch (c) {
@@ -223,6 +242,8 @@ int main(int argc, char **argv)
 
 	input = argv[optind];
 
+	start_time = now_seconds();
+
 	pak = fpk_open(input);
 	if (!pak) {
 		fprintf(stderr, "funpack: cannot open: %s\n", input);
@@ -289,8 +310,8 @@ int main(int argc, char **argv)
 		printf("\n");
 
 	if (!(flags & FUNPACK_QUIET))
-		printf("unpacked: %s -> %s (%lu entries)\n", input, out_dir,
-		       (unsigned long)count);
+		printf("unpacked: %s -> %s (%lu entries) in %.3fs\n", input, out_dir,
+		       (unsigned long)count, now_seconds() - start_time);
 
 	free(out_dir);
 	return 0;