patch-2.4.0-test5 linux/fs/nls/nls_utf8.c

• Lines: 61
• Date: Tue Jul 18 22:48:33 2000
• Orig file: v2.4.0-test4/linux/fs/nls/nls_utf8.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test4/linux/fs/nls/nls_utf8.c linux/fs/nls/nls_utf8.c
@@ -0,0 +1,60 @@
+/*
+ * Module for handling utf8 just like any other charset.
+ * By Urban Widmark 2000
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/nls.h>
+#include <linux/errno.h>
+
+static unsigned char identity[256];
+
+static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
+{
+	int n;
+
+	if ( (n = utf8_wctomb(out, uni, boundlen)) == -1) {
+		*out = '?';
+		return -EINVAL;
+	}
+	return n;
+}
+
+static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
+{
+	int n;
+
+	if ( (n = utf8_mbtowc(uni, rawstring, boundlen)) == -1) {
+		*uni = 0x003f;	/* ? */
+		n = -EINVAL;
+	}
+	return n;
+}
+
+static struct nls_table table = {
+	"utf8",
+	uni2char,
+	char2uni,
+	identity,	/* no conversion */
+	identity,
+	THIS_MODULE,
+};
+
+static int __init init_nls_utf8(void)
+{
+	int i;
+	for (i=0; i<256; i++)
+		identity[i] = i;
+
+        return register_nls(&table);
+}
+
+static void __exit exit_nls_utf8(void)
+{
+        unregister_nls(&table);
+}
+
+module_init(init_nls_utf8)
+module_exit(exit_nls_utf8)