usage.c: move format processing out of die_errno()

[thirdparty/git.git] / usage.c

diff --git a/usage.c b/usage.c
index 82ff13163b542aab07e68bfa1056dc46316634a1..8675d72f30a1c3e98d890a8b1b6f111a1293258f 100644 (file)
--- a/usage.c
+++ b/usage.c
@@ -109,19 +109,11 @@ void NORETURN die(const char *err, ...)
        va_end(params);
 }
 
-void NORETURN die_errno(const char *fmt, ...)
+static const char *fmt_with_err(char *buf, int n, const char *fmt)
 {
-       va_list params;
-       char fmt_with_err[1024];
        char str_error[256], *err;
        int i, j;
 
-       if (die_is_recursing()) {
-               fputs("fatal: recursion detected in die_errno handler\n",
-                       stderr);
-               exit(128);
-       }
-
        err = strerror(errno);
        for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) {
                if ((str_error[j++] = err[i++]) != '%')
@@ -136,10 +128,23 @@ void NORETURN die_errno(const char *fmt, ...)
                }
        }
        str_error[j] = 0;
-       snprintf(fmt_with_err, sizeof(fmt_with_err), "%s: %s", fmt, str_error);
+       snprintf(buf, n, "%s: %s", fmt, str_error);
+       return buf;
+}
+
+void NORETURN die_errno(const char *fmt, ...)
+{
+       char buf[1024];
+       va_list params;
+
+       if (die_is_recursing()) {
+               fputs("fatal: recursion detected in die_errno handler\n",
+                       stderr);
+               exit(128);
+       }
 
        va_start(params, fmt);
-       die_routine(fmt_with_err, params);
+       die_routine(fmt_with_err(buf, sizeof(buf), fmt), params);
        va_end(params);
 }