t6035-merge-dir-to-symlink depends on SYMLINKS prerequisite

diff --git a/usage.c b/usage.c
index a5fc4ec5fae66823266862fa0254474696c220e6..b6aea45280bf2aa4c06a0130f912a61377165016 100644 (file)
--- a/usage.c
+++ b/usage.c
@@ -7,7 +7,7 @@
 
 static void report(const char *prefix, const char *err, va_list params)
 {
-       char msg[256];
+       char msg[1024];
        vsnprintf(msg, sizeof(msg), err, params);
        fprintf(stderr, "%s%s\n", prefix, msg);
 }
@@ -41,27 +41,11 @@ static void (*die_routine)(const char *err, va_list params) NORETURN = die_built
 static void (*error_routine)(const char *err, va_list params) = error_builtin;
 static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
 
-void set_usage_routine(void (*routine)(const char *err) NORETURN)
-{
-       usage_routine = routine;
-}
-
 void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN)
 {
        die_routine = routine;
 }
 
-void set_error_routine(void (*routine)(const char *err, va_list params))
-{
-       error_routine = routine;
-}
-
-void set_warn_routine(void (*routine)(const char *warn, va_list params))
-{
-       warn_routine = routine;
-}
-
-
 void usage(const char *err)
 {
        usage_routine(err);
@@ -76,6 +60,34 @@ void die(const char *err, ...)
        va_end(params);
 }
 
+void die_errno(const char *fmt, ...)
+{
+       va_list params;
+       char fmt_with_err[1024];
+       char str_error[256], *err;
+       int i, j;
+
+       err = strerror(errno);
+       for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) {
+               if ((str_error[j++] = err[i++]) != '%')
+                       continue;
+               if (j < sizeof(str_error) - 1) {
+                       str_error[j++] = '%';
+               } else {
+                       /* No room to double the '%', so we overwrite it with
+                        * '\0' below */
+                       j--;
+                       break;
+               }
+       }
+       str_error[j] = 0;
+       snprintf(fmt_with_err, sizeof(fmt_with_err), "%s: %s", fmt, str_error);
+
+       va_start(params, fmt);
+       die_routine(fmt_with_err, params);
+       va_end(params);
+}
+
 int error(const char *err, ...)
 {
        va_list params;