1 files changed, 106 insertions, 0 deletions
diff --git a/extension/ordchr.c b/extension/ordchr.c
new file mode 100644
index 00000000..037bfa37
--- /dev/null
+++ b/extension/ordchr.c
@@ -0,0 +1,106 @@
+/*
+ * ordchr.c - Builtin functions that provide ord() and chr() functions.
+ *
+ * Arnold Robbins
+ * arnold@skeeve.com
+ * 8/2001
+ */
+
+/*
+ * Copyright (C) 2001 the Free Software Foundation, Inc.
+ * 
+ * This file is part of GAWK, the GNU implementation of the
+ * AWK Programming Language.
+ * 
+ * GAWK is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * GAWK is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ */
+
+#include "awk.h"
+
+/*  do_ord --- return numeric value of first char of string */
+
+static NODE *
+do_ord(tree)
+NODE *tree;
+{
+	NODE *str;
+	int ret = -1;
+
+	if  (do_lint && tree->param_cnt > 1)
+		lintwarn("ord: called with too many arguments");
+
+	str = get_argument(tree, 0);
+	if (str != NULL) {
+		(void) force_string(str);
+		ret = str->stptr[0];
+		free_temp(str);
+	} else if (do_lint)
+		lintwarn("ord: called with no arguments");
+
+
+	/* Set the return value */
+	set_value(tmp_number((AWKNUM) ret));
+
+	/* Just to make the interpreter happy */
+	return tmp_number((AWKNUM) 0);
+}
+
+/*  do_chr --- turn numeric value into a string */
+
+static NODE *
+do_chr(tree)
+NODE *tree;
+{
+	NODE *num;
+	unsigned int ret = 0;
+	AWKNUM val = 0.0;
+	char str[2];
+
+	str[0] = str[1] = '\0';
+
+	if  (do_lint && tree->param_cnt > 1)
+		lintwarn("chr: called with too many arguments");
+
+	num = get_argument(tree, 0);
+	if (num != NULL) {
+		val = force_number(num);
+		ret = val;	/* convert to int */
+		free_temp(num);
+		ret &= 0xff;
+		str[0] = ret;
+		str[1] = '\0';
+	} else if (do_lint)
+		lintwarn("chr: called with no arguments");
+
+
+	/* Set the return value */
+	set_value(tmp_string(str, 1));
+
+	/* Just to make the interpreter happy */
+	return tmp_number((AWKNUM) 0);
+}
+
+/* dlload --- load new builtins in this library */
+
+NODE *
+dlload(tree, dl)
+NODE *tree;
+void *dl;
+{
+	make_builtin("ord", do_ord, 1);
+	make_builtin("chr", do_chr, 1);
+
+	return tmp_number((AWKNUM) 0);
+}