1 files changed, 39 insertions, 0 deletions
diff --git a/src/fe_utils/option_utils.c b/src/fe_utils/option_utils.c
index e19a495dba7..3e7e512ad91 100644
--- a/src/fe_utils/option_utils.c
+++ b/src/fe_utils/option_utils.c
@@ -12,6 +12,8 @@
 
 #include "postgres_fe.h"
 
+#include "common/logging.h"
+#include "common/string.h"
 #include "fe_utils/option_utils.h"
 
 /*
@@ -36,3 +38,40 @@ handle_help_version_opts(int argc, char *argv[],
 		}
 	}
 }
+
+/*
+ * option_parse_int
+ *
+ * Parse integer value for an option.  If the parsing is successful, returns
+ * true and stores the result in *result if that's given; if parsing fails,
+ * returns false.
+ */
+bool
+option_parse_int(const char *optarg, const char *optname,
+				 int min_range, int max_range,
+				 int *result)
+{
+	char	   *endptr;
+	int			val;
+
+	errno = 0;
+	val = strtoint(optarg, &endptr, 10);
+
+	if (*endptr)
+	{
+		pg_log_error("invalid value \"%s\" for option %s",
+					 optarg, optname);
+		return false;
+	}
+
+	if (errno == ERANGE || val < min_range || val > max_range)
+	{
+		pg_log_error("%s must be in range %d..%d",
+					 optname, min_range, max_range);
+		return false;
+	}
+
+	if (result)
+		*result = val;
+	return true;
+}