diff options
Diffstat (limited to 'usage.c')
| -rw-r--r-- | usage.c | 50 |
1 files changed, 31 insertions, 19 deletions
@@ -7,9 +7,9 @@ static void report(const char *prefix, const char *err, va_list params) { - fputs(prefix, stderr); - vfprintf(stderr, err, params); - fputs("\n", stderr); + char msg[1024]; + vsnprintf(msg, sizeof(msg), err, params); + fprintf(stderr, "%s%s\n", prefix, msg); } static NORETURN void usage_builtin(const char *err) @@ -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; |