Initial

1 files changed, 44 insertions, 0 deletions

diff --git a/util.h b/util.h
new file mode 100644
index 0000000..4c51c76
--- /dev/null
+++ b/util.h
@@ -0,0 +1,44 @@
+#ifndef XLNCH_UTIL_H
+#define XLNCH_UTIL_H
+
+#include <stdarg.h>
+
+#define MAX(A, B) ((A) > (B) ? (A) : (B))
+
+void die(const char *fmt, ...) {
+	va_list ap;
+
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	va_end(ap);
+
+	if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
+		fputc(' ', stderr);
+		perror(NULL);
+	} else {
+		fputc('\n', stderr);
+	}
+
+	exit(1);
+}
+
+void trim(char * str)
+{
+    int i;
+    int begin = 0;
+    int end = strlen(str) - 1;
+
+    while (isspace((unsigned char) str[begin]))
+        begin++;
+
+    while (isspace((unsigned char) str[end]) && (end >= begin))
+        end--;
+
+    /* Shift all characters back to the start of the string array. */
+    for (i = begin; i <= end; i++)
+        str[i - begin] = str[i];
+
+    str[i - begin] = '\0';
+}
+
+#endif /* XLNCH_UTIL_H */