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

diff --git a/ldiscucs.c b/ldiscucs.c
new file mode 100644 (file)
index 0000000..2e19adc
--- /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);
+}