From 029664574763aa7725e490b2754aa00e74d8fdce Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Tue, 12 Jul 2016 12:34:03 -0400
Subject: console: added initial reader (terminal-to-client) logic.

---
 src/console/ptyc_console_reader.c | 158 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 156 insertions(+), 2 deletions(-)

(limited to 'src/console')

diff --git a/src/console/ptyc_console_reader.c b/src/console/ptyc_console_reader.c
index 3afab13..0ce4900 100644
--- a/src/console/ptyc_console_reader.c
+++ b/src/console/ptyc_console_reader.c
@@ -12,8 +12,162 @@
 #include <ptycon/ptycon.h>
 #include "ptycon_driver_impl.h"
 
+typedef nt_unicode_conversion_params_utf16_to_utf8 uc_conv_params;
+
+static size_t ptyc_translate_keyboard_event(
+	nt_input_record *	rec,
+	unsigned char *		ch,
+	wchar16_t *		wch)
+{
+	wchar16_t	src[2];
+	wchar16_t	recwch;
+	uint32_t	nbytes;
+	uc_conv_params	params = {0,0,0,0,0,0,0,0,0};
+
+	if (!rec->key_event.key_down)
+		return 0;
+
+	if (!(recwch = rec->key_event.unicode_char))
+		return 0;
+
+	if (*wch) {
+		if ((recwch < 0xDC00) || (recwch >= 0xE000)) {
+			*wch = 0;
+			return 0;
+		} else {
+			src[0] = *wch;
+			src[1] = recwch;
+			*wch   = 0;
+			nbytes = 2*sizeof(wchar16_t);
+		}
+	} else if ((recwch >= 0xD800) && (recwch < 0xDC00)) {
+		*wch = recwch;
+		return 0;
+
+	} else {
+		src[0] = recwch;
+		nbytes = sizeof(wchar16_t);
+	}
+
+	params.src		 = src;
+	params.src_size_in_bytes = nbytes;
+	params.dst		 = ch;
+	params.dst_size_in_bytes = 4;
+
+	ntapi->uc_convert_unicode_stream_utf16_to_utf8(
+		&params);
+
+	return params.bytes_written;
+}
+
+static size_t ptyc_translate_mouse_event(
+	nt_input_record *	rec,
+	unsigned char *		ch)
+{
+	(void)rec;
+	(void)ch;
+	return 0;
+}
+
+static size_t ptyc_translate_window_event(nt_input_record * rec)
+{
+	(void)rec;
+	return 0;
+}
+
+static size_t ptyc_translate_menu_event(nt_input_record * rec)
+{
+	(void)rec;
+	return 0;
+}
+
+static size_t ptyc_translate_focus_event(nt_input_record * rec)
+{
+	(void)rec;
+	return 0;
+}
+
+static size_t ptyc_translate_event(
+	nt_input_record *	rec,
+	unsigned char *		ch,
+	wchar16_t *		wch)
+{
+	switch (rec->event_type) {
+		case NT_KEY_EVENT:
+			return ptyc_translate_keyboard_event(
+				rec,ch,wch);
+
+		case NT_MOUSE_EVENT:
+			return ptyc_translate_mouse_event(
+				rec,ch);
+
+		case NT_WINDOW_BUFFER_SIZE_EVENT:
+			return ptyc_translate_window_event(rec);
+
+		case NT_MENU_EVENT:
+			return ptyc_translate_menu_event(rec);
+
+		case NT_FOCUS_EVENT:
+			return ptyc_translate_focus_event(rec);
+	}
+
+	return 0;
+}
+
 int ptyc_console_reader(struct ptyc_driver_ctx_impl * ictx)
 {
-	(void)ictx;
-	return ntapi->tt_wait_for_dummy_event();
+	int32_t		status;
+	void *		hwait;
+	nt_iosb		iosb;
+	uint32_t	nevents;
+	size_t		nbytes;
+	wchar16_t	wch;
+	unsigned char *	ch;
+	unsigned	i;
+
+	if ((status = ntapi->tt_create_private_event(
+			&hwait,
+			NT_NOTIFICATION_EVENT,
+			NT_EVENT_NOT_SIGNALED)))
+		return status;
+
+	do {
+		if (!(ntcon->read_console_input_utf16(
+				ictx->tctx.hin,
+				ictx->tctx.input.events,
+				PTYC_RAW_EVENTS,
+				&nevents)))
+			return NT_STATUS_ALREADY_DISCONNECTED;
+
+		for (ch=ictx->tctx.input.stream, i=0; i<nevents; i++)
+			ch += ptyc_translate_event(
+				&ictx->tctx.input.events[i],
+				ch,&wch);
+
+		nbytes = ch - ictx->tctx.input.stream;
+		ch     = ictx->tctx.input.stream;
+
+		for (; nbytes; ) {
+			status = ntapi->pty_write(
+				ictx->cctx.hptm,
+				hwait,0,0,
+				&iosb,
+				ch,nbytes,
+				0,0);
+
+			if (status == NT_STATUS_PENDING)
+				status = ntapi->zw_wait_for_single_object(
+					hwait,NT_SYNC_ALERTABLE,0);
+
+			if (status || iosb.status) {
+				ntapi->zw_close(hwait);
+				return status ? status : iosb.status;
+			}
+
+			ch     += iosb.info;
+			nbytes -= iosb.info;
+		}
+	} while (1);
+
+	return NT_STATUS_INTERNAL_ERROR;
 }
-- 
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