1 files changed, 50 insertions, 0 deletions
diff --git a/lib/Utils/xatonum.cpp b/lib/Utils/xatonum.cpp
new file mode 100644
index 0000000..b096ca8
--- /dev/null
+++ b/lib/Utils/xatonum.cpp
@@ -0,0 +1,50 @@
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
+ *
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ */
+#include "abrtlib.h"
+
+unsigned xatou(const char *numstr)
+{
+	unsigned r;
+	int old_errno;
+	char *e;
+
+	if (*numstr < '0' || *numstr > '9')
+		goto inval;
+
+	old_errno = errno;
+	errno = 0;
+	r = strtoul(numstr, &e, 10);
+	if (errno || numstr == e || *e != '\0')
+		goto inval; /* error / no digits / illegal trailing chars */
+	errno = old_errno; /* Ok.  So restore errno. */
+	return r;
+
+ inval:
+	error_msg_and_die("invalid number '%s'", numstr);
+}
+
+int xatoi_u(const char *numstr)
+{
+	unsigned r = xatou(numstr);
+	if (r > (unsigned)INT_MAX)
+		error_msg_and_die("invalid number '%s'", numstr);
+	return r;
+}
+
+int xatoi(const char *numstr)
+{
+	unsigned r;
+
+	if (*numstr != '-')
+		return xatoi_u(numstr);
+
+	r = xatou(numstr + 1);
+	if (r > (unsigned)INT_MAX + 1)
+		error_msg_and_die("invalid number '%s'", numstr);
+	return - (int)r;
+}