Add a base implementation of SHA-256 support

diff --git a/t/helper/test-chmtime.c b/t/helper/test-chmtime.c
index e760256406fa9c2fe0f9b2cde0ffb97ff11c6cab..aa22af48c2a6f48a81a6306a1850f5b5256fa319 100644 (file)
--- a/t/helper/test-chmtime.c
+++ b/t/helper/test-chmtime.c
@@ -5,32 +5,43 @@
  *
  * The mtime can be changed to an absolute value:
  *
- *     test-chmtime =<seconds> file...
+ *     test-tool chmtime =<seconds> file...
  *
  * Relative to the current time as returned by time(3):
  *
- *     test-chmtime =+<seconds> (or =-<seconds>) file...
+ *     test-tool chmtime =+<seconds> (or =-<seconds>) file...
  *
  * Or relative to the current mtime of the file:
  *
- *     test-chmtime <seconds> file...
- *     test-chmtime +<seconds> (or -<seconds>) file...
+ *     test-tool chmtime <seconds> file...
+ *     test-tool chmtime +<seconds> (or -<seconds>) file...
  *
  * Examples:
  *
- * To just print the mtime use --verbose and set the file mtime offset to 0:
+ * To print the mtime and the file name use --verbose and set
+ * the file mtime offset to 0:
  *
- *     test-chmtime -v +0 file
+ *     test-tool chmtime -v +0 file
+ *
+ * To print only the mtime use --get:
+ *
+ *     test-tool chmtime --get file
  *
  * To set the mtime to current time:
  *
- *     test-chmtime =+0 file
+ *     test-tool chmtime =+0 file
+ *
+ * To set the file mtime offset to +1 and print the new value:
+ *
+ *     test-tool chmtime --get +1 file
  *
  */
+#include "test-tool.h"
 #include "git-compat-util.h"
 #include <utime.h>
 
-static const char usage_str[] = "-v|--verbose (+|=|=+|=-|-)<seconds> <file>...";
+static const char usage_str[] =
+       "(-v|--verbose|-g|--get) (+|=|=+|=-|-)<seconds> <file>...";
 
 static int timespec_arg(const char *arg, long int *set_time, int *set_eq)
 {
@@ -46,7 +57,6 @@ static int timespec_arg(const char *arg, long int *set_time, int *set_eq)
        }
        *set_time = strtol(timespec, &test, 10);
        if (*test) {
-               fprintf(stderr, "Not a base-10 integer: %s\n", arg + 1);
                return 0;
        }
        if ((*set_eq && *set_time < 0) || *set_eq == 2) {
@@ -56,9 +66,10 @@ static int timespec_arg(const char *arg, long int *set_time, int *set_eq)
        return 1;
 }
 
-int cmd_main(int argc, const char **argv)
+int cmd__chmtime(int argc, const char **argv)
 {
        static int verbose;
+       static int get;
 
        int i = 1;
        /* no mtime change by default */
@@ -68,18 +79,34 @@ int cmd_main(int argc, const char **argv)
        if (argc < 3)
                goto usage;
 
-       if (strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) {
+       if (strcmp(argv[i], "--get") == 0 || strcmp(argv[i], "-g") == 0) {
+               get = 1;
+               ++i;
+       } else if (strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) {
                verbose = 1;
                ++i;
        }
-       if (timespec_arg(argv[i], &set_time, &set_eq))
+
+       if (i == argc) {
+               goto usage;
+       }
+
+       if (timespec_arg(argv[i], &set_time, &set_eq)) {
                ++i;
-       else
+       } else {
+               if (get == 0) {
+                       fprintf(stderr, "Not a base-10 integer: %s\n", argv[i] + 1);
+                       goto usage;
+               }
+       }
+
+       if (i == argc)
                goto usage;
 
        for (; i < argc; i++) {
                struct stat sb;
                struct utimbuf utb;
+               uintmax_t mtime;
 
                if (stat(argv[i], &sb) < 0) {
                        fprintf(stderr, "Failed to stat %s: %s\n",
@@ -99,8 +126,10 @@ int cmd_main(int argc, const char **argv)
                utb.actime = sb.st_atime;
                utb.modtime = set_eq ? set_time : sb.st_mtime + set_time;
 
-               if (verbose) {
-                       uintmax_t mtime = utb.modtime < 0 ? 0: utb.modtime;
+               mtime = utb.modtime < 0 ? 0: utb.modtime;
+               if (get) {
+                       printf("%"PRIuMAX"\n", mtime);
+               } else if (verbose) {
                        printf("%"PRIuMAX"\t%s\n", mtime, argv[i]);
                }