Handle all arguments, split out int parsing function

1 files changed, 34 insertions, 0 deletions

diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..2425576
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,34 @@
+#define _GNU_SOURCE
+#include <bsd/string.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "yawa.h"
+#include "utils.h"
+
+int
+parse_int(char *string, char *arg)
+{
+	errno = 0;
+	char *endptr;
+	long val = strtol(string, &endptr, 10);
+	if (errno != 0)
+	{
+		char *errormsg;
+		asprintf(&errormsg, "parse_int: failed to parse %s", arg);
+
+		perror(errormsg);
+		free(errormsg);
+		exit(-2);
+	}
+
+	if (endptr == string)
+	{
+		fprintf(stderr, "Valid %s not found\n", arg);
+		exit(-2);
+	}
+	return (int)val;
+}