From 74cea548874cbfd7f90834dca6e73e63a42bd6d8 Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Sun, 27 Oct 2002 09:24:47 +0000
Subject: [PATCH] Arrgh! _Another_ missed commit. I really must do something
 about this bad habit of mine :-/

git-svn-id: svn://svn.tartarus.org/sgt/putty@2149 cda61777-01e9-0310-a592-d414129be87e
---
 ldiscucs.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 ldiscucs.c

diff --git a/ldiscucs.c b/ldiscucs.c
new file mode 100644
index 00000000..2e19adcc
--- /dev/null
+++ b/ldiscucs.c
@@ -0,0 +1,80 @@
+/*
+ * ldisc.c: PuTTY line discipline. Sits between the input coming
+ * from keypresses in the window, and the output channel leading to
+ * the back end. Implements echo and/or local line editing,
+ * depending on what's currently configured.
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+
+#include "putty.h"
+#include "terminal.h"
+#include "ldisc.h"
+
+void lpage_send(void *handle,
+		int codepage, char *buf, int len, int interactive)
+{
+    Ldisc ldisc = (Ldisc)handle;
+    wchar_t *widebuffer = 0;
+    int widesize = 0;
+    int wclen;
+
+    if (codepage < 0) {
+	ldisc_send(ldisc, buf, len, interactive);
+	return;
+    }
+
+    widesize = len * 2;
+    widebuffer = smalloc(widesize * sizeof(wchar_t));
+
+    wclen = mb_to_wc(codepage, 0, buf, len, widebuffer, widesize);
+    luni_send(ldisc, widebuffer, wclen, interactive);
+
+    sfree(widebuffer);
+}
+
+void luni_send(void *handle, wchar_t * widebuf, int len, int interactive)
+{
+    Ldisc ldisc = (Ldisc)handle;
+    int ratio = (in_utf(ldisc->term))?3:1;
+    char *linebuffer;
+    int linesize;
+    int i;
+    char *p;
+
+    linesize = len * ratio * 2;
+    linebuffer = smalloc(linesize * sizeof(wchar_t));
+
+    if (in_utf(ldisc->term)) {
+	/* UTF is a simple algorithm */
+	for (p = linebuffer, i = 0; i < len; i++) {
+	    wchar_t ch = widebuf[i];
+	    /* We only deal with 16-bit wide chars */
+	    if ((ch&0xF800) == 0xD800) ch = '.';
+
+	    if (ch < 0x80) {
+		*p++ = (char) (ch);
+	    } else if (ch < 0x800) {
+		*p++ = (0xC0 | (ch >> 6));
+		*p++ = (0x80 | (ch & 0x3F));
+	    } else {
+		*p++ = (0xE0 | (ch >> 12));
+		*p++ = (0x80 | ((ch >> 6) & 0x3F));
+		*p++ = (0x80 | (ch & 0x3F));
+	    }
+	}
+    } else {
+	int rv;
+	rv = wc_to_mb(line_codepage, 0, widebuf, len,
+		      linebuffer, linesize, NULL, NULL);
+	if (rv >= 0)
+	    p = linebuffer + rv;
+	else
+	    p = linebuffer;
+    }
+    if (p > linebuffer)
+	ldisc_send(ldisc, linebuffer, p - linebuffer, interactive);
+
+    sfree(linebuffer);
+}
-- 
2.11.0