1 files changed, 124 insertions, 0 deletions
diff --git a/sys/libkern/iconv_xlat.c b/sys/libkern/iconv_xlat.c
new file mode 100644
index 0000000..6dd2800
--- /dev/null
+++ b/sys/libkern/iconv_xlat.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2000-2001, Boris Popov
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    This product includes software developed by Boris Popov.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/iconv.h>
+
+#include "iconv_converter_if.h"
+
+/*
+ * "XLAT" converter
+ */
+
+#ifdef MODULE_DEPEND
+MODULE_DEPEND(iconv_xlat, libiconv, 1, 1, 1);
+#endif
+
+/*
+ * XLAT converter instance
+ */
+struct iconv_xlat {
+	KOBJ_FIELDS;
+	u_char *		d_table;
+	struct iconv_cspair *	d_csp;
+};
+
+static int
+iconv_xlat_open(struct iconv_converter_class *dcp,
+	struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp)
+{
+	struct iconv_xlat *dp;
+
+	dp = (struct iconv_xlat *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK);
+	dp->d_table = csp->cp_data;
+	dp->d_csp = csp;
+	csp->cp_refcount++;
+	*dpp = (void*)dp;
+	return 0;
+}
+
+static int
+iconv_xlat_close(void *data)
+{
+	struct iconv_xlat *dp = data;
+
+	dp->d_csp->cp_refcount--;
+	kobj_delete((struct kobj*)data, M_ICONV);
+	return 0;
+}
+
+static int
+iconv_xlat_conv(void *d2p, const char **inbuf,
+	size_t *inbytesleft, char **outbuf, size_t *outbytesleft)
+{
+	struct iconv_xlat *dp = (struct iconv_xlat*)d2p;
+	const char *src;
+	char *dst;
+	int n, r;
+
+	if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL)
+		return 0;
+	r = n = min(*inbytesleft, *outbytesleft);
+	src = *inbuf;
+	dst = *outbuf;
+	while(r--)
+		*dst++ = dp->d_table[(u_char)*src++];
+	*inbuf += n;
+	*outbuf += n;
+	*inbytesleft += n;
+	*outbytesleft -= n;
+	return 0;
+}
+
+static const char *
+iconv_xlat_name(struct iconv_converter_class *dcp)
+{
+	return "xlat";
+}
+
+static kobj_method_t iconv_xlat_methods[] = {
+	KOBJMETHOD(iconv_converter_open,	iconv_xlat_open),
+	KOBJMETHOD(iconv_converter_close,	iconv_xlat_close),
+	KOBJMETHOD(iconv_converter_conv,	iconv_xlat_conv),
+#if 0
+	KOBJMETHOD(iconv_converter_init,	iconv_xlat_init),
+	KOBJMETHOD(iconv_converter_done,	iconv_xlat_done),
+#endif
+	KOBJMETHOD(iconv_converter_name,	iconv_xlat_name),
+	{0, 0}
+};
+
+KICONV_CONVERTER(xlat, sizeof(struct iconv_xlat));