2 files changed, 150 insertions, 0 deletions
diff --git a/lib/isc/nls/Makefile.in b/lib/isc/nls/Makefile.in
new file mode 100644
index 0000000..704dead
--- /dev/null
+++ b/lib/isc/nls/Makefile.in
@@ -0,0 +1,29 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+srcdir =	@srcdir@
+VPATH =		@srcdir@
+top_srcdir =	@top_srcdir@
+
+CINCLUDES =	-I../unix/include \
+		-I${srcdir}/../unix/include \
+		-I../include \
+		-I${srcdir}/../include
+
+CDEFINES =
+CWARNINGS =
+
+OBJS =		msgcat.@O@
+
+SRCS =		msgcat.c
+
+SUBDIRS =
+TARGETS =	${OBJS}
+
+@BIND9_MAKE_RULES@
diff --git a/lib/isc/nls/msgcat.c b/lib/isc/nls/msgcat.c
new file mode 100644
index 0000000..ab09b94
--- /dev/null
+++ b/lib/isc/nls/msgcat.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+/*! \file msgcat.c */
+
+#include <config.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+
+#include <isc/magic.h>
+#include <isc/msgcat.h>
+#include <isc/util.h>
+
+#ifdef HAVE_CATGETS
+#include <nl_types.h>		/* Required for nl_catd. */
+#endif
+
+/*
+ * Implementation Notes:
+ *
+ *	We use malloc() and free() instead of isc_mem_get() and isc_mem_put()
+ *	because we don't want to require a memory context to be specified
+ *	in order to use a message catalog.
+ */
+
+struct isc_msgcat {
+	unsigned int	magic;
+#ifdef HAVE_CATGETS
+	nl_catd		catalog;
+#endif
+};
+
+#define MSGCAT_MAGIC			ISC_MAGIC('M', 'C', 'a', 't')
+#define VALID_MSGCAT(m)			ISC_MAGIC_VALID(m, MSGCAT_MAGIC)
+
+void
+isc_msgcat_open(const char *name, isc_msgcat_t **msgcatp) {
+	isc_msgcat_t *msgcat;
+
+	/*
+	 * Open a message catalog.
+	 */
+
+	REQUIRE(name != NULL);
+	REQUIRE(msgcatp != NULL && *msgcatp == NULL);
+
+	msgcat = malloc(sizeof(*msgcat));
+	if (msgcat == NULL) {
+		*msgcatp = NULL;
+		return;
+	}
+
+#ifdef HAVE_CATGETS
+	/*
+	 * We don't check if catopen() fails because we don't care.
+	 * If it does fail, then when we call catgets(), it will use
+	 * the default string.
+	 */
+	msgcat->catalog = catopen(name, 0);
+#endif
+	msgcat->magic = MSGCAT_MAGIC;
+
+	*msgcatp = msgcat;
+}
+
+void
+isc_msgcat_close(isc_msgcat_t **msgcatp) {
+	isc_msgcat_t *msgcat;
+
+	/*
+	 * Close a message catalog.
+	 */
+
+	REQUIRE(msgcatp != NULL);
+	msgcat = *msgcatp;
+	REQUIRE(VALID_MSGCAT(msgcat) || msgcat == NULL);
+
+	if (msgcat != NULL) {
+#ifdef HAVE_CATGETS
+		if (msgcat->catalog != (nl_catd)(-1))
+			(void)catclose(msgcat->catalog);
+#endif
+		msgcat->magic = 0;
+		free(msgcat);
+	}
+
+	*msgcatp = NULL;
+}
+
+const char *
+isc_msgcat_get(isc_msgcat_t *msgcat, int set, int message,
+	       const char *default_text)
+{
+	/*
+	 * Get message 'message' from message set 'set' in 'msgcat'.  If it
+	 * is not available, use 'default'.
+	 */
+
+	REQUIRE(VALID_MSGCAT(msgcat) || msgcat == NULL);
+	REQUIRE(set > 0);
+	REQUIRE(message > 0);
+	REQUIRE(default_text != NULL);
+
+#ifdef HAVE_CATGETS
+	if (msgcat == NULL)
+		return (default_text);
+	return (catgets(msgcat->catalog, set, message, default_text));
+#else
+	return (default_text);
+#endif
+}