From 105a1b94bd9d5a0f10752e135671f4e9a4b0d8da Mon Sep 17 00:00:00 2001
From: Paul Gilbert
Date: Fri, 17 May 2019 13:51:43 -1000
Subject: GLK: TADS2: Added code for output, run, various miscellaneous

---
 common/util.cpp |  6 ++++++
 common/util.h   | 10 ++++++++++
 2 files changed, 16 insertions(+)

(limited to 'common')

diff --git a/common/util.cpp b/common/util.cpp
index 62a1baf6ac..a6c7958a0d 100644
--- a/common/util.cpp
+++ b/common/util.cpp
@@ -23,6 +23,7 @@
 #define FORBIDDEN_SYMBOL_EXCEPTION_isalnum
 #define FORBIDDEN_SYMBOL_EXCEPTION_isalpha
 #define FORBIDDEN_SYMBOL_EXCEPTION_isdigit
+#define FORBIDDEN_SYMBOL_EXCEPTION_isxdigit
 #define FORBIDDEN_SYMBOL_EXCEPTION_isnumber
 #define FORBIDDEN_SYMBOL_EXCEPTION_islower
 #define FORBIDDEN_SYMBOL_EXCEPTION_isspace
@@ -132,6 +133,11 @@ bool isDigit(int c) {
 	return isdigit((byte)c);
 }
 
+bool isXDigit(int c) {
+	ENSURE_ASCII_CHAR(c);
+	return isxdigit((byte)c);
+}
+
 bool isLower(int c) {
 	ENSURE_ASCII_CHAR(c);
 	return islower((byte)c);
diff --git a/common/util.h b/common/util.h
index 77d7523034..5f853da43a 100644
--- a/common/util.h
+++ b/common/util.h
@@ -141,6 +141,16 @@ bool isAlpha(int c);
  */
 bool isDigit(int c);
 
+/**
+ * Test whether the given character is a hwzadecimal-digit (0-9 or A-F).
+ * If the parameter is outside the range of a signed or unsigned char, then
+ * false is returned.
+ *
+ * @param c		the character to test
+ * @return		true if the character is a hexadecimal-digit, false otherwise.
+ */
+bool isXDigit(int c);
+
 /**
  * Test whether the given character is a lower-case letter (a-z).
  * If the parameter is outside the range of a signed or unsigned char, then
-- 
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