0.6.6

CMakeLists.txt

@@ -124,7 +124,7 @@ set(SOURCE_FILES
         user/persist.h
         include/helpers.h
         user/syscfg.c
-        user/syscfg.h)
+        user/syscfg.h user/ansi_utf.c user/ansi_utf.h)
 
 include_directories(include)
 include_directories(user)
@@ -145,6 +145,7 @@ add_definitions(
         -DFLAG_GZIP=2
         -DADMIN_PASSWORD="asdf"
         -DGIT_HASH="blabla"
+        -DDEBUG_ANSI=1
         -DESPFS_HEATSHRINK)
 
 add_executable(esp_vt100_firmware ${SOURCE_FILES})

Makefile

@@ -65,8 +65,15 @@ LIBS += esphttpd
 # compiler flags using during compilation of source files
 CFLAGS		= -Os -ggdb -std=gnu99 -Werror -Wpointer-arith -Wundef -Wall -Wl,-EL -fno-inline-functions \
 		-nostdlib -mlongcalls -mtext-section-literals  -D__ets__ -DICACHE_FLASH \
-		-Wno-address -Wno-unused -DHTTPD_MAX_BACKLOG_SIZE=8192 -DADMIN_PASSWORD=$(ADMIN_PASSWORD) \
-		-DGIT_HASH='"$(shell git rev-parse --short HEAD)"'
+		-Wno-address -Wno-unused
+
+CFLAGS += -DHTTPD_MAX_BACKLOG_SIZE=10240
+CFLAGS += -DGIT_HASH='"$(shell git rev-parse --short HEAD)"'
+CFLAGS += -DADMIN_PASSWORD=$(ADMIN_PASSWORD)
+
+# Debug logging
+CFLAGS += -DDEBUG_ANSI=1
+CFLAGS += -DDEBUG_INPUT=1
 
 # linker flags used to generate the main object file
 LDFLAGS		= -nostdlib -Wl,--no-check-sections -u call_user_start -Wl,-static

html_orig/css/app.css

@@ -1152,9 +1152,6 @@ body.term #botnav {
   position: absolute;
   top: -9999px; }
 
-.nb {
-  font-weight: normal !important; }
-
 .theme-0 .fg0 {
   color: #111213; }
 .theme-0 .bg0 {
@@ -1548,6 +1545,24 @@ body.term #botnav {
 .bold {
   font-weight: bold !important; }
 
+.faint span {
+  opacity: 0.6; }
+
+.italic {
+  font-style: italic; }
+
+.under {
+  text-decoration: underline; }
+
+.strike {
+  text-decoration: line-through; }
+
+.underline.strike {
+  text-decoration: underline line-through; }
+
+.blink-hide .blink {
+  color: transparent; }
+
 .Row.color-preview {
   font-family: monospace;
   font-size: 16pt;

html_orig/js/app.js

@@ -1022,6 +1022,70 @@ $.ready(function() {
 		}, 1);
 	}
 });
+
+
+/*! http://mths.be/fromcodepoint v0.1.0 by @mathias */
+if (!String.fromCodePoint) {
+	(function() {
+		var defineProperty = (function() {
+			// IE 8 only supports `Object.defineProperty` on DOM elements
+			try {
+				var object = {};
+				var $defineProperty = Object.defineProperty;
+				var result = $defineProperty(object, object, object) && $defineProperty;
+			} catch(error) {}
+			return result;
+		}());
+		var stringFromCharCode = String.fromCharCode;
+		var floor = Math.floor;
+		var fromCodePoint = function() {
+			var MAX_SIZE = 0x4000;
+			var codeUnits = [];
+			var highSurrogate;
+			var lowSurrogate;
+			var index = -1;
+			var length = arguments.length;
+			if (!length) {
+				return '';
+			}
+			var result = '';
+			while (++index < length) {
+				var codePoint = Number(arguments[index]);
+				if (
+					!isFinite(codePoint) ||       // `NaN`, `+Infinity`, or `-Infinity`
+					codePoint < 0 ||              // not a valid Unicode code point
+					codePoint > 0x10FFFF ||       // not a valid Unicode code point
+					floor(codePoint) != codePoint // not an integer
+				) {
+					throw RangeError('Invalid code point: ' + codePoint);
+				}
+				if (codePoint <= 0xFFFF) { // BMP code point
+					codeUnits.push(codePoint);
+				} else { // Astral code point; split in surrogate halves
+					// http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+					codePoint -= 0x10000;
+					highSurrogate = (codePoint >> 10) + 0xD800;
+					lowSurrogate = (codePoint % 0x400) + 0xDC00;
+					codeUnits.push(highSurrogate, lowSurrogate);
+				}
+				if (index + 1 == length || codeUnits.length > MAX_SIZE) {
+					result += stringFromCharCode.apply(null, codeUnits);
+					codeUnits.length = 0;
+				}
+			}
+			return result;
+		};
+		if (defineProperty) {
+			defineProperty(String, 'fromCodePoint', {
+				'value': fromCodePoint,
+				'configurable': true,
+				'writable': true
+			});
+		} else {
+			String.fromCodePoint = fromCodePoint;
+		}
+	}());
+}
 // Generated from PHP locale file
 var _tr = {
     "wifi.connected_ip_is": "Connected, IP is ",
@@ -1200,7 +1264,7 @@ var Screen = (function () {
 		y: 0,
 		fg: 7,           // colors 0-15
 		bg: 0,
-		bold: false,
+		attrs: 0,
 		suppress: false, // do not turn on in blink interval (for safe moving)
 		hidden: false    // do not show
 	};
@@ -1208,35 +1272,19 @@ var Screen = (function () {
 	var screen = [];
 	var blinkIval;
 
-	/** Clear screen */
-	function _clear() {
-		for (var i = W*H-1; i>=0; i--) {
-			var cell = screen[i];
-			cell.t = ' ';
-			cell.bg = cursor.bg;
-			cell.fg = cursor.fg;
-			cell.bold = false;
-			_draw(cell);
-		}
-	}
-
-	/** Set text and color at XY */
-	function _cellAt(y, x) {
-		return screen[y*W+x];
-	}
+	var frakturExceptions = {
+		'C': '\u212d',
+		'H': '\u210c',
+		'I': '\u2111',
+		'R': '\u211c',
+		'Z': '\u2128',
+	};
 
 	/** Get cell under cursor */
 	function _curCell() {
 		return screen[cursor.y*W + cursor.x];
 	}
 
-	/** Enable or disable cursor visibility */
-	function _cursorEnable(enable) {
-		cursor.hidden = !enable;
-		cursor.a &= enable;
-		_draw(_curCell());
-	}
-
 	/** Safely move cursor */
 	function cursorSet(y, x) {
 		// Hide and prevent from showing up during the move
@@ -1255,13 +1303,44 @@ var Screen = (function () {
 			inv = cursor.a && cursor.x == cell.x && cursor.y == cell.y;
 		}
 
-		var e = cell.e, fg, bg;
+		var elem = cell.e, fg, bg, cn, t;
 		// Colors
 		fg = inv ? cell.bg : cell.fg;
 		bg = inv ? cell.fg : cell.bg;
 		// Update
-		e.innerText = (cell.t + ' ')[0];
-		e.className = 'fg' + fg + ' bg' + bg + (cell.bold ? ' bold' : '');
+		elem.textContent = t = (cell.t + ' ')[0];
+
+		cn = 'fg' + fg + ' bg' + bg;
+		if (cell.attrs & (1<<0)) cn += ' bold';
+		if (cell.attrs & (1<<2)) cn += ' italic';
+		if (cell.attrs & (1<<3)) cn += ' under';
+		if (cell.attrs & (1<<4)) cn += ' blink';
+		if (cell.attrs & (1<<5)) {
+			cn += ' fraktur';
+			// perform substitution
+			if (t >= 'a' && t <= 'z') {
+				t = String.fromCodePoint(0x1d51e - 97 + t.charCodeAt(0));
+			}
+			else if (t >= 'A' && t <= 'Z') {
+				// this set is incomplete, some exceptions are needed
+				if (frakturExceptions.hasOwnProperty(t)) {
+					t = frakturExceptions[t];
+				} else {
+					t = String.fromCodePoint(0x1d504 - 65 + t.charCodeAt(0));
+				}
+			}
+			elem.textContent = t;
+		}
+		if (cell.attrs & (1<<6)) cn += ' strike';
+
+		if (cell.attrs & (1<<1)) {
+			cn += ' faint';
+			// faint requires special html - otherwise it would also dim the background.
+			// we use opacity on the text...
+			elem.innerHTML = '<span>' + e(elem.textContent) + '</span>';
+		}
+
+		elem.className = cn;
 	}
 
 	/** Show entire screen */
@@ -1305,6 +1384,7 @@ var Screen = (function () {
 				t: ' ',
 				fg: cursor.fg,
 				bg: cursor.bg,
+				attrs: 0,
 				e: e,
 				x: i % W,
 				y: Math.floor(i / W),
@@ -1328,6 +1408,15 @@ var Screen = (function () {
 				_draw(_curCell(), cursor.a);
 			}
 		}, 500);
+
+		// blink attribute
+		setInterval(function () {
+			$('#screen').removeClass('blink-hide');
+			setTimeout(function() {
+				$('#screen').addClass('blink-hide');
+			}, 800); // 200 ms ON
+		}, 1000);
+
 		inited = true;
 	}
 
@@ -1336,11 +1425,18 @@ var Screen = (function () {
 		return (s.charCodeAt(i++) - 1) + (s.charCodeAt(i) - 1) * 127;
 	}
 
-	var SEQ_SET_COLOR = 1;
+	/** Decode three-byte number */
+	function parse3B(s, i) {
+		return (s.charCodeAt(i) - 1) + (s.charCodeAt(i+1) - 1) * 127 + (s.charCodeAt(i+2) - 1) * 127 * 127;
+	}
+
+	var SEQ_SET_COLOR_ATTR = 1;
 	var SEQ_REPEAT = 2;
+	var SEQ_SET_COLOR = 3;
+	var SEQ_SET_ATTR = 4;
 
 	function _load_content(str) {
-		var i = 0, ci = 0, j, jc, num, num2, t = ' ', fg, bg, bold, cell;
+		var i = 0, ci = 0, j, jc, num, num2, t = ' ', fg, bg, attrs, cell;
 
 		if (!inited) _init();
 
@@ -1362,25 +1458,31 @@ var Screen = (function () {
 		num = parse2B(str, i); i += 2; // fg bg bold hidden
 		cursor.fg = num & 0x0F;
 		cursor.bg = (num & 0xF0) >> 4;
-		cursor.bold = !!(num & 0x100);
-		cursor.hidden = !(num & 0x200);
-		// console.log("FG ",cursor.fg, ", BG ", cursor.bg,", BOLD ", cursor.bold, ", HIDE ", cursor.hidden);
+		cursor.hidden = !(num & 0x100);
 
 		fg = cursor.fg;
 		bg = cursor.bg;
-		bold = cursor.bold;
+		attrs = 0;
 
 		// Here come the content
 		while(i < str.length && ci<W*H) {
 
 			j = str[i++];
 			jc = j.charCodeAt(0);
-			if (jc == SEQ_SET_COLOR) {
+			if (jc == SEQ_SET_COLOR_ATTR) {
+				num = parse3B(str, i); i += 3;
+				fg = num & 0x0F;
+				bg = (num & 0xF0) >> 4;
+				attrs = (num & 0xFF00)>>8;
+			}
+			else if (jc == SEQ_SET_COLOR) {
 				num = parse2B(str, i); i += 2;
 				fg = num & 0x0F;
 				bg = (num & 0xF0) >> 4;
-				bold = !!(num & 0x100);
-				// console.log("Switch to ",fg,bg,bold);
+			}
+			else if (jc == SEQ_SET_ATTR) {
+				num = parse2B(str, i); i += 2;
+				attrs = num & 0xFF;
 			}
 			else if (jc == SEQ_REPEAT) {
 				num = parse2B(str, i); i += 2;
@@ -1390,7 +1492,7 @@ var Screen = (function () {
 					cell.fg = fg;
 					cell.bg = bg;
 					cell.t = t;
-					cell.bold = bold;
+					cell.attrs = attrs;
 				}
 			}
 			else {
@@ -1399,7 +1501,7 @@ var Screen = (function () {
 				t = cell.t = j;
 				cell.fg = fg;
 				cell.bg = bg;
-				cell.bold = bold;
+				cell.attrs = attrs;
 				// console.log("Symbol ", j);
 			}
 		}
@@ -1450,12 +1552,14 @@ var Conn = (function() {
 		console.warn("SOCKET CLOSED, code "+evt.code+". Reconnecting...");
 		setTimeout(function() {
 			init();
-		}, 1000);
+		}, 200);
+		// this happens when the buffer gets fucked up via invalid unicode.
+		// we basically use polling instead of socket then
 	}
 
 	function onMessage(evt) {
 		try {
-			console.log("RX: ", evt.data);
+			//console.log("RX: ", evt.data);
 			// Assume all our messages are screen updates
 			Screen.load(evt.data);
 		} catch(e) {
@@ -1530,6 +1634,7 @@ var Input = (function() {
 			//console.log("Down ", code, e);
 			switch(code) {
 				case 8: sendStrMsg('\x08'); break;
+				case 9: sendStrMsg('\x09'); break;
 				case 10:
 				case 13: sendStrMsg('\x0d\x0a'); break;
 				case 27: sendStrMsg('\x1b'); break; // this allows to directly enter control sequences

html_orig/jssrc/appcommon.js

@@ -123,3 +123,67 @@ $.ready(function() {
 		}, 1);
 	}
 });
+
+
+/*! http://mths.be/fromcodepoint v0.1.0 by @mathias */
+if (!String.fromCodePoint) {
+	(function() {
+		var defineProperty = (function() {
+			// IE 8 only supports `Object.defineProperty` on DOM elements
+			try {
+				var object = {};
+				var $defineProperty = Object.defineProperty;
+				var result = $defineProperty(object, object, object) && $defineProperty;
+			} catch(error) {}
+			return result;
+		}());
+		var stringFromCharCode = String.fromCharCode;
+		var floor = Math.floor;
+		var fromCodePoint = function() {
+			var MAX_SIZE = 0x4000;
+			var codeUnits = [];
+			var highSurrogate;
+			var lowSurrogate;
+			var index = -1;
+			var length = arguments.length;
+			if (!length) {
+				return '';
+			}
+			var result = '';
+			while (++index < length) {
+				var codePoint = Number(arguments[index]);
+				if (
+					!isFinite(codePoint) ||       // `NaN`, `+Infinity`, or `-Infinity`
+					codePoint < 0 ||              // not a valid Unicode code point
+					codePoint > 0x10FFFF ||       // not a valid Unicode code point
+					floor(codePoint) != codePoint // not an integer
+				) {
+					throw RangeError('Invalid code point: ' + codePoint);
+				}
+				if (codePoint <= 0xFFFF) { // BMP code point
+					codeUnits.push(codePoint);
+				} else { // Astral code point; split in surrogate halves
+					// http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+					codePoint -= 0x10000;
+					highSurrogate = (codePoint >> 10) + 0xD800;
+					lowSurrogate = (codePoint % 0x400) + 0xDC00;
+					codeUnits.push(highSurrogate, lowSurrogate);
+				}
+				if (index + 1 == length || codeUnits.length > MAX_SIZE) {
+					result += stringFromCharCode.apply(null, codeUnits);
+					codeUnits.length = 0;
+				}
+			}
+			return result;
+		};
+		if (defineProperty) {
+			defineProperty(String, 'fromCodePoint', {
+				'value': fromCodePoint,
+				'configurable': true,
+				'writable': true
+			});
+		} else {
+			String.fromCodePoint = fromCodePoint;
+		}
+	}());
+}

html_orig/jssrc/term.js

@@ -8,7 +8,7 @@ var Screen = (function () {
 		y: 0,
 		fg: 7,           // colors 0-15
 		bg: 0,
-		bold: false,
+		attrs: 0,
 		suppress: false, // do not turn on in blink interval (for safe moving)
 		hidden: false    // do not show
 	};
@@ -16,35 +16,19 @@ var Screen = (function () {
 	var screen = [];
 	var blinkIval;
 
-	/** Clear screen */
-	function _clear() {
-		for (var i = W*H-1; i>=0; i--) {
-			var cell = screen[i];
-			cell.t = ' ';
-			cell.bg = cursor.bg;
-			cell.fg = cursor.fg;
-			cell.bold = false;
-			_draw(cell);
-		}
-	}
-
-	/** Set text and color at XY */
-	function _cellAt(y, x) {
-		return screen[y*W+x];
-	}
+	var frakturExceptions = {
+		'C': '\u212d',
+		'H': '\u210c',
+		'I': '\u2111',
+		'R': '\u211c',
+		'Z': '\u2128',
+	};
 
 	/** Get cell under cursor */
 	function _curCell() {
 		return screen[cursor.y*W + cursor.x];
 	}
 
-	/** Enable or disable cursor visibility */
-	function _cursorEnable(enable) {
-		cursor.hidden = !enable;
-		cursor.a &= enable;
-		_draw(_curCell());
-	}
-
 	/** Safely move cursor */
 	function cursorSet(y, x) {
 		// Hide and prevent from showing up during the move
@@ -63,13 +47,44 @@ var Screen = (function () {
 			inv = cursor.a && cursor.x == cell.x && cursor.y == cell.y;
 		}
 
-		var e = cell.e, fg, bg;
+		var elem = cell.e, fg, bg, cn, t;
 		// Colors
 		fg = inv ? cell.bg : cell.fg;
 		bg = inv ? cell.fg : cell.bg;
 		// Update
-		e.innerText = (cell.t + ' ')[0];
-		e.className = 'fg' + fg + ' bg' + bg + (cell.bold ? ' bold' : '');
+		elem.textContent = t = (cell.t + ' ')[0];
+
+		cn = 'fg' + fg + ' bg' + bg;
+		if (cell.attrs & (1<<0)) cn += ' bold';
+		if (cell.attrs & (1<<2)) cn += ' italic';
+		if (cell.attrs & (1<<3)) cn += ' under';
+		if (cell.attrs & (1<<4)) cn += ' blink';
+		if (cell.attrs & (1<<5)) {
+			cn += ' fraktur';
+			// perform substitution
+			if (t >= 'a' && t <= 'z') {
+				t = String.fromCodePoint(0x1d51e - 97 + t.charCodeAt(0));
+			}
+			else if (t >= 'A' && t <= 'Z') {
+				// this set is incomplete, some exceptions are needed
+				if (frakturExceptions.hasOwnProperty(t)) {
+					t = frakturExceptions[t];
+				} else {
+					t = String.fromCodePoint(0x1d504 - 65 + t.charCodeAt(0));
+				}
+			}
+			elem.textContent = t;
+		}
+		if (cell.attrs & (1<<6)) cn += ' strike';
+
+		if (cell.attrs & (1<<1)) {
+			cn += ' faint';
+			// faint requires special html - otherwise it would also dim the background.
+			// we use opacity on the text...
+			elem.innerHTML = '<span>' + e(elem.textContent) + '</span>';
+		}
+
+		elem.className = cn;
 	}
 
 	/** Show entire screen */
@@ -113,6 +128,7 @@ var Screen = (function () {
 				t: ' ',
 				fg: cursor.fg,
 				bg: cursor.bg,
+				attrs: 0,
 				e: e,
 				x: i % W,
 				y: Math.floor(i / W),
@@ -136,6 +152,15 @@ var Screen = (function () {
 				_draw(_curCell(), cursor.a);
 			}
 		}, 500);
+
+		// blink attribute
+		setInterval(function () {
+			$('#screen').removeClass('blink-hide');
+			setTimeout(function() {
+				$('#screen').addClass('blink-hide');
+			}, 800); // 200 ms ON
+		}, 1000);
+
 		inited = true;
 	}
 
@@ -144,11 +169,18 @@ var Screen = (function () {
 		return (s.charCodeAt(i++) - 1) + (s.charCodeAt(i) - 1) * 127;
 	}
 
-	var SEQ_SET_COLOR = 1;
+	/** Decode three-byte number */
+	function parse3B(s, i) {
+		return (s.charCodeAt(i) - 1) + (s.charCodeAt(i+1) - 1) * 127 + (s.charCodeAt(i+2) - 1) * 127 * 127;
+	}
+
+	var SEQ_SET_COLOR_ATTR = 1;
 	var SEQ_REPEAT = 2;
+	var SEQ_SET_COLOR = 3;
+	var SEQ_SET_ATTR = 4;
 
 	function _load_content(str) {
-		var i = 0, ci = 0, j, jc, num, num2, t = ' ', fg, bg, bold, cell;
+		var i = 0, ci = 0, j, jc, num, num2, t = ' ', fg, bg, attrs, cell;
 
 		if (!inited) _init();
 
@@ -170,25 +202,31 @@ var Screen = (function () {
 		num = parse2B(str, i); i += 2; // fg bg bold hidden
 		cursor.fg = num & 0x0F;
 		cursor.bg = (num & 0xF0) >> 4;
-		cursor.bold = !!(num & 0x100);
-		cursor.hidden = !(num & 0x200);
-		// console.log("FG ",cursor.fg, ", BG ", cursor.bg,", BOLD ", cursor.bold, ", HIDE ", cursor.hidden);
+		cursor.hidden = !(num & 0x100);
 
 		fg = cursor.fg;
 		bg = cursor.bg;
-		bold = cursor.bold;
+		attrs = 0;
 
 		// Here come the content
 		while(i < str.length && ci<W*H) {
 
 			j = str[i++];
 			jc = j.charCodeAt(0);
-			if (jc == SEQ_SET_COLOR) {
+			if (jc == SEQ_SET_COLOR_ATTR) {
+				num = parse3B(str, i); i += 3;
+				fg = num & 0x0F;
+				bg = (num & 0xF0) >> 4;
+				attrs = (num & 0xFF00)>>8;
+			}
+			else if (jc == SEQ_SET_COLOR) {
 				num = parse2B(str, i); i += 2;
 				fg = num & 0x0F;
 				bg = (num & 0xF0) >> 4;
-				bold = !!(num & 0x100);
-				// console.log("Switch to ",fg,bg,bold);
+			}
+			else if (jc == SEQ_SET_ATTR) {
+				num = parse2B(str, i); i += 2;
+				attrs = num & 0xFF;
 			}
 			else if (jc == SEQ_REPEAT) {
 				num = parse2B(str, i); i += 2;
@@ -198,7 +236,7 @@ var Screen = (function () {
 					cell.fg = fg;
 					cell.bg = bg;
 					cell.t = t;
-					cell.bold = bold;
+					cell.attrs = attrs;
 				}
 			}
 			else {
@@ -207,7 +245,7 @@ var Screen = (function () {
 				t = cell.t = j;
 				cell.fg = fg;
 				cell.bg = bg;
-				cell.bold = bold;
+				cell.attrs = attrs;
 				// console.log("Symbol ", j);
 			}
 		}
@@ -258,12 +296,14 @@ var Conn = (function() {
 		console.warn("SOCKET CLOSED, code "+evt.code+". Reconnecting...");
 		setTimeout(function() {
 			init();
-		}, 1000);
+		}, 200);
+		// this happens when the buffer gets fucked up via invalid unicode.
+		// we basically use polling instead of socket then
 	}
 
 	function onMessage(evt) {
 		try {
-			console.log("RX: ", evt.data);
+			//console.log("RX: ", evt.data);
 			// Assume all our messages are screen updates
 			Screen.load(evt.data);
 		} catch(e) {
@@ -338,6 +378,7 @@ var Input = (function() {
 			//console.log("Down ", code, e);
 			switch(code) {
 				case 8: sendStrMsg('\x08'); break;
+				case 9: sendStrMsg('\x09'); break;
 				case 10:
 				case 13: sendStrMsg('\x0d\x0a'); break;
 				case 27: sendStrMsg('\x1b'); break; // this allows to directly enter control sequences

html_orig/sass/pages/_term.scss

@@ -86,11 +86,6 @@ body.term {
 	top: -9999px;
 }
 
-// "non-bold"
-.nb {
-	font-weight: normal !important;
-}
-
 // Tango
 .theme-0 {
 	$term-colors:
@@ -163,10 +158,36 @@ body.term {
 	}
 }
 
+// Attributes
 .bold {
 	font-weight: bold !important;
 }
 
+.faint span { // content of faint is wrapped in span
+	opacity: 0.6;
+}
+
+.italic {
+	font-style: italic;
+}
+
+.under {
+	text-decoration: underline;
+}
+
+.strike {
+	text-decoration: line-through;
+}
+
+.underline.strike {
+	text-decoration: underline line-through;
+}
+
+.blink-hide .blink {
+	color: transparent;
+}
+//
+
 .Row.color-preview {
 	font-family: monospace;
 	font-size: 16pt;

user/ansi_parser.c

@@ -11,23 +11,27 @@ static const char _ansi_actions[] = {
 	0, 1, 0, 1, 1, 1, 2, 1, 
 	3, 1, 4, 1, 5, 1, 6, 1, 
 	7, 1, 8, 1, 9, 1, 10, 1, 
-	11, 1, 12, 1, 13, 1, 14, 2, 
-	9, 10, 2, 9, 11
+	11, 1, 12, 1, 13, 1, 14, 1, 
+	15, 1, 16, 1, 17, 2, 2, 5, 
+	2, 10, 11, 2, 10, 12
 };
 
 static const char _ansi_eof_actions[] = {
 	0, 13, 13, 13, 13, 13, 13, 13, 
 	13, 13, 13, 13, 13, 13, 13, 13, 
 	13, 13, 13, 13, 13, 13, 13, 13, 
-	13, 13, 0, 0, 0, 0, 0
+	13, 13, 13, 13, 13, 13, 0, 0, 
+	0, 0, 0, 0, 0, 0, 0
 };
 
 static const int ansi_start = 1;
-static const int ansi_first_final = 26;
+static const int ansi_first_final = 30;
 static const int ansi_error = 0;
 
-static const int ansi_en_CSI_body = 3;
-static const int ansi_en_OSC_body = 5;
+static const int ansi_en_CSI_body = 5;
+static const int ansi_en_OSC_body = 7;
+static const int ansi_en_TITLE_body = 27;
+static const int ansi_en_charsetcmd_body = 29;
 static const int ansi_en_main = 1;
 
 
@@ -42,10 +46,39 @@ static void ICACHE_FLASH_ATTR
 resetParserCb(void *arg) {
 	if (cs != ansi_start) {
 		cs = ansi_start;
-		warn("Parser timeout, state reset");
+		apars_reset_utf8buffer();
+		ansi_warn("Parser timeout, state reset");
 	}
 }
 
+#define HISTORY_LEN 16
+
+#if DEBUG_ANSI
+static char history[HISTORY_LEN + 1];
+#endif
+
+void ICACHE_FLASH_ATTR
+apars_handle_badseq(void)
+{
+#if DEBUG_ANSI
+	char buf1[HISTORY_LEN*3+2];
+	char buf2[HISTORY_LEN*3+2];
+	char *b1 = buf1;
+	char *b2 = buf2;
+	char c;
+
+	for(int i=0;i<HISTORY_LEN;i++) {
+		c = history[i];
+		b1 += sprintf(b1, "%2X ", c);
+		if (c < 32 || c > 127) c = '.';
+		b2 += sprintf(b2, "%c  ", c);
+	}
+
+	ansi_dbg("Context: %s", buf2);
+	ansi_dbg("         %s", buf1);
+#endif
+}
+
 /**
  * \brief Linear ANSI chars stream parser
  *
@@ -65,6 +98,7 @@ ansi_parser(const char *newdata, size_t len)
 	// The CSI code is built here
 	static char csi_leading;      //!< Leading char, 0 if none
 	static int  csi_ni;           //!< Number of the active digit
+	static int  csi_cnt;          //!< Digit count
 	static int  csi_n[CSI_N_MAX]; //!< Param digits
 	static char csi_char;         //!< CSI action char (end)
 	static char osc_buffer[OSC_CHAR_MAX];
@@ -80,24 +114,35 @@ ansi_parser(const char *newdata, size_t len)
 	// Init Ragel on the first run
 	if (cs == -1) {
 		
-/* #line 84 "user/ansi_parser.c" */
+/* #line 118 "user/ansi_parser.c" */
 	{
 	cs = ansi_start;
 	}
 
-/* #line 57 "user/ansi_parser.rl" */
+/* #line 87 "user/ansi_parser.rl" */
+
+#if DEBUG_ANSI
+		memset(history, 0, sizeof(history));
+#endif
 	}
 
-	// schedule state reset
+	// schedule state reset after idle timeout
 	if (termconf->parser_tout_ms > 0) {
 		os_timer_disarm(&resetTim);
 		os_timer_setfn(&resetTim, resetParserCb, NULL);
 		os_timer_arm(&resetTim, termconf->parser_tout_ms, 0);
 	}
 
+#if DEBUG_ANSI
+	for(int i=len; i<HISTORY_LEN; i++) {
+		history[i-len] = history[i];
+	}
+	strcpy(&history[HISTORY_LEN-len], newdata);
+#endif
+
 	// The parser
 	
-/* #line 101 "user/ansi_parser.c" */
+/* #line 146 "user/ansi_parser.c" */
 	{
 	const char *_acts;
 	unsigned int _nacts;
@@ -114,254 +159,329 @@ case 1:
 	goto tr0;
 case 2:
 	switch( (*p) ) {
-		case 55: goto tr3;
-		case 56: goto tr4;
-		case 91: goto tr5;
-		case 93: goto tr6;
-		case 99: goto tr7;
+		case 32: goto tr3;
+		case 35: goto tr4;
+		case 91: goto tr7;
+		case 93: goto tr8;
+		case 107: goto tr9;
 	}
-	goto tr2;
-case 0:
-	goto _out;
-case 26:
-	if ( (*p) == 27 )
-		goto tr1;
-	goto tr0;
-case 3:
-	if ( (*p) == 59 )
-		goto tr10;
 	if ( (*p) < 60 ) {
 		if ( (*p) > 47 ) {
 			if ( 48 <= (*p) && (*p) <= 57 )
-				goto tr9;
-		} else if ( (*p) >= 32 )
-			goto tr8;
-	} else if ( (*p) > 64 ) {
+				goto tr6;
+		} else if ( (*p) >= 40 )
+			goto tr5;
+	} else if ( (*p) > 62 ) {
 		if ( (*p) > 90 ) {
 			if ( 97 <= (*p) && (*p) <= 122 )
-				goto tr11;
+				goto tr6;
 		} else if ( (*p) >= 65 )
-			goto tr11;
+			goto tr6;
 	} else
-		goto tr8;
+		goto tr6;
 	goto tr2;
-case 4:
-	if ( (*p) == 59 )
+case 0:
+	goto _out;
+case 3:
+	if ( 70 <= (*p) && (*p) <= 71 )
 		goto tr10;
-	if ( (*p) < 65 ) {
-		if ( 48 <= (*p) && (*p) <= 57 )
-			goto tr9;
-	} else if ( (*p) > 90 ) {
-		if ( 97 <= (*p) && (*p) <= 122 )
-			goto tr11;
-	} else
-		goto tr11;
 	goto tr2;
-case 27:
+case 30:
+	if ( (*p) == 27 )
+		goto tr1;
+	goto tr0;
+case 4:
+	if ( 48 <= (*p) && (*p) <= 57 )
+		goto tr11;
 	goto tr2;
 case 5:
 	switch( (*p) ) {
-		case 66: goto tr12;
-		case 84: goto tr13;
-		case 87: goto tr14;
+		case 59: goto tr14;
+		case 64: goto tr15;
 	}
+	if ( (*p) < 60 ) {
+		if ( (*p) > 47 ) {
+			if ( 48 <= (*p) && (*p) <= 57 )
+				goto tr13;
+		} else if ( (*p) >= 32 )
+			goto tr12;
+	} else if ( (*p) > 63 ) {
+		if ( (*p) > 90 ) {
+			if ( 96 <= (*p) && (*p) <= 122 )
+				goto tr16;
+		} else if ( (*p) >= 65 )
+			goto tr16;
+	} else
+		goto tr12;
 	goto tr2;
 case 6:
-	if ( (*p) == 84 )
-		goto tr15;
-	goto tr2;
-case 7:
-	if ( (*p) == 78 )
+	if ( (*p) == 59 )
+		goto tr14;
+	if ( (*p) < 64 ) {
+		if ( 48 <= (*p) && (*p) <= 57 )
+			goto tr13;
+	} else if ( (*p) > 90 ) {
+		if ( 96 <= (*p) && (*p) <= 122 )
+			goto tr16;
+	} else
 		goto tr16;
 	goto tr2;
-case 8:
+case 31:
+	goto tr2;
+case 32:
+	if ( (*p) == 59 )
+		goto tr14;
+	if ( (*p) < 64 ) {
 		if ( 48 <= (*p) && (*p) <= 57 )
-		goto tr17;
+			goto tr13;
+	} else if ( (*p) > 90 ) {
+		if ( 96 <= (*p) && (*p) <= 122 )
+			goto tr16;
+	} else
+		goto tr16;
+	goto tr2;
+case 7:
+	switch( (*p) ) {
+		case 48: goto tr17;
+		case 66: goto tr18;
+		case 84: goto tr19;
+		case 87: goto tr20;
+	}
+	goto tr2;
+case 8:
+	if ( (*p) == 59 )
+		goto tr21;
 	goto tr2;
 case 9:
-	if ( (*p) == 61 )
-		goto tr18;
-	goto tr2;
-case 10:
-	if ( (*p) == 27 )
-		goto tr2;
-	goto tr19;
-case 11:
 	switch( (*p) ) {
-		case 7: goto tr20;
-		case 27: goto tr21;
+		case 7: goto tr23;
+		case 27: goto tr24;
 	}
-	goto tr19;
-case 28:
-	switch( (*p) ) {
-		case 7: goto tr20;
-		case 27: goto tr21;
-	}
-	goto tr19;
-case 12:
-	if ( (*p) == 92 )
 	goto tr22;
-	goto tr2;
-case 29:
-	goto tr2;
-case 13:
-	if ( (*p) == 73 )
-		goto tr23;
-	goto tr2;
-case 14:
-	if ( (*p) == 84 )
-		goto tr24;
-	goto tr2;
-case 15:
-	if ( (*p) == 76 )
+case 33:
+	switch( (*p) ) {
+		case 7: goto tr23;
+		case 27: goto tr24;
+	}
+	goto tr22;
+case 10:
+	if ( (*p) == 92 )
 		goto tr25;
 	goto tr2;
-case 16:
-	if ( (*p) == 69 )
+case 34:
+	goto tr2;
+case 11:
+	if ( (*p) == 84 )
 		goto tr26;
 	goto tr2;
-case 17:
-	if ( (*p) == 61 )
+case 12:
+	if ( (*p) == 78 )
 		goto tr27;
 	goto tr2;
-case 18:
-	if ( (*p) == 27 )
+case 13:
+	if ( 48 <= (*p) && (*p) <= 57 )
+		goto tr28;
 	goto tr2;
-	goto tr28;
-case 19:
+case 14:
+	if ( (*p) == 61 )
+		goto tr29;
+	goto tr2;
+case 15:
 	switch( (*p) ) {
-		case 7: goto tr29;
-		case 27: goto tr30;
+		case 7: goto tr31;
+		case 27: goto tr32;
 	}
-	goto tr28;
-case 30:
+	goto tr30;
+case 35:
 	switch( (*p) ) {
-		case 7: goto tr29;
-		case 27: goto tr30;
+		case 7: goto tr31;
+		case 27: goto tr32;
 	}
-	goto tr28;
-case 20:
+	goto tr30;
+case 16:
 	if ( (*p) == 92 )
-		goto tr31;
+		goto tr33;
+	goto tr2;
+case 17:
+	if ( (*p) == 73 )
+		goto tr34;
+	goto tr2;
+case 18:
+	if ( (*p) == 84 )
+		goto tr35;
+	goto tr2;
+case 19:
+	if ( (*p) == 76 )
+		goto tr36;
+	goto tr2;
+case 20:
+	if ( (*p) == 69 )
+		goto tr37;
 	goto tr2;
 case 21:
-	if ( 48 <= (*p) && (*p) <= 57 )
-		goto tr32;
+	if ( (*p) == 61 )
+		goto tr38;
 	goto tr2;
 case 22:
-	if ( (*p) == 59 )
-		goto tr33;
 	if ( 48 <= (*p) && (*p) <= 57 )
-		goto tr32;
+		goto tr39;
 	goto tr2;
 case 23:
+	if ( (*p) == 59 )
+		goto tr40;
 	if ( 48 <= (*p) && (*p) <= 57 )
-		goto tr34;
+		goto tr39;
 	goto tr2;
 case 24:
-	switch( (*p) ) {
-		case 7: goto tr35;
-		case 27: goto tr36;
-	}
 	if ( 48 <= (*p) && (*p) <= 57 )
-		goto tr34;
+		goto tr41;
 	goto tr2;
 case 25:
+	switch( (*p) ) {
+		case 7: goto tr42;
+		case 27: goto tr43;
+	}
+	if ( 48 <= (*p) && (*p) <= 57 )
+		goto tr41;
+	goto tr2;
+case 26:
 	if ( (*p) == 92 )
-		goto tr35;
+		goto tr42;
+	goto tr2;
+case 27:
+	switch( (*p) ) {
+		case 7: goto tr45;
+		case 27: goto tr46;
+	}
+	goto tr44;
+case 36:
+	switch( (*p) ) {
+		case 7: goto tr45;
+		case 27: goto tr46;
+	}
+	goto tr44;
+case 28:
+	if ( (*p) == 92 )
+		goto tr47;
+	goto tr2;
+case 37:
+	goto tr2;
+case 29:
+	goto tr48;
+case 38:
 	goto tr2;
 	}
 
 	tr2: cs = 0; goto f0;
 	tr0: cs = 1; goto f1;
 	tr1: cs = 2; goto _again;
-	tr8: cs = 4; goto f7;
-	tr9: cs = 4; goto f8;
-	tr10: cs = 4; goto f9;
-	tr12: cs = 6; goto _again;
-	tr15: cs = 7; goto _again;
-	tr16: cs = 8; goto _again;
-	tr17: cs = 9; goto f8;
-	tr18: cs = 10; goto _again;
-	tr19: cs = 11; goto f11;
-	tr21: cs = 12; goto _again;
-	tr13: cs = 13; goto _again;
-	tr23: cs = 14; goto _again;
-	tr24: cs = 15; goto _again;
-	tr25: cs = 16; goto _again;
-	tr26: cs = 17; goto _again;
-	tr27: cs = 18; goto _again;
-	tr28: cs = 19; goto f11;
-	tr30: cs = 20; goto _again;
-	tr14: cs = 21; goto _again;
-	tr32: cs = 22; goto f8;
-	tr33: cs = 23; goto f9;
-	tr34: cs = 24; goto f8;
-	tr36: cs = 25; goto _again;
-	tr3: cs = 26; goto f2;
-	tr4: cs = 26; goto f3;
-	tr5: cs = 26; goto f4;
-	tr6: cs = 26; goto f5;
-	tr7: cs = 26; goto f6;
-	tr11: cs = 27; goto f10;
-	tr20: cs = 28; goto f12;
-	tr22: cs = 29; goto f13;
-	tr31: cs = 29; goto f15;
-	tr35: cs = 29; goto f16;
-	tr29: cs = 30; goto f14;
+	tr3: cs = 3; goto _again;
+	tr4: cs = 4; goto _again;
+	tr12: cs = 6; goto f9;
+	tr13: cs = 6; goto f10;
+	tr14: cs = 6; goto f11;
+	tr17: cs = 8; goto _again;
+	tr21: cs = 9; goto _again;
+	tr22: cs = 9; goto f14;
+	tr24: cs = 10; goto _again;
+	tr18: cs = 11; goto _again;
+	tr26: cs = 12; goto _again;
+	tr27: cs = 13; goto _again;
+	tr28: cs = 14; goto f10;
+	tr29: cs = 15; goto _again;
+	tr30: cs = 15; goto f14;
+	tr32: cs = 16; goto _again;
+	tr19: cs = 17; goto _again;
+	tr34: cs = 18; goto _again;
+	tr35: cs = 19; goto _again;
+	tr36: cs = 20; goto _again;
+	tr37: cs = 21; goto _again;
+	tr20: cs = 22; goto _again;
+	tr39: cs = 23; goto f10;
+	tr40: cs = 24; goto f11;
+	tr41: cs = 25; goto f10;
+	tr43: cs = 26; goto _again;
+	tr44: cs = 27; goto f14;
+	tr46: cs = 28; goto _again;
+	tr5: cs = 30; goto f2;
+	tr6: cs = 30; goto f3;
+	tr7: cs = 30; goto f4;
+	tr8: cs = 30; goto f5;
+	tr9: cs = 30; goto f6;
+	tr10: cs = 30; goto f7;
+	tr11: cs = 30; goto f8;
+	tr16: cs = 31; goto f13;
+	tr15: cs = 32; goto f12;
+	tr23: cs = 33; goto f15;
+	tr38: cs = 34; goto f6;
+	tr25: cs = 34; goto f16;
+	tr33: cs = 34; goto f18;
+	tr42: cs = 34; goto f19;
+	tr31: cs = 35; goto f17;
+	tr45: cs = 36; goto f15;
+	tr47: cs = 37; goto f16;
+	tr48: cs = 38; goto f20;
 
 	f1: _acts = _ansi_actions + 1; goto execFuncs;
 	f4: _acts = _ansi_actions + 3; goto execFuncs;
-	f7: _acts = _ansi_actions + 5; goto execFuncs;
-	f8: _acts = _ansi_actions + 7; goto execFuncs;
-	f9: _acts = _ansi_actions + 9; goto execFuncs;
-	f10: _acts = _ansi_actions + 11; goto execFuncs;
+	f9: _acts = _ansi_actions + 5; goto execFuncs;
+	f10: _acts = _ansi_actions + 7; goto execFuncs;
+	f11: _acts = _ansi_actions + 9; goto execFuncs;
+	f13: _acts = _ansi_actions + 11; goto execFuncs;
 	f0: _acts = _ansi_actions + 13; goto execFuncs;
 	f5: _acts = _ansi_actions + 15; goto execFuncs;
-	f16: _acts = _ansi_actions + 17; goto execFuncs;
-	f11: _acts = _ansi_actions + 19; goto execFuncs;
-	f15: _acts = _ansi_actions + 21; goto execFuncs;
-	f13: _acts = _ansi_actions + 23; goto execFuncs;
-	f6: _acts = _ansi_actions + 25; goto execFuncs;
-	f2: _acts = _ansi_actions + 27; goto execFuncs;
+	f6: _acts = _ansi_actions + 17; goto execFuncs;
+	f19: _acts = _ansi_actions + 19; goto execFuncs;
+	f14: _acts = _ansi_actions + 21; goto execFuncs;
+	f16: _acts = _ansi_actions + 23; goto execFuncs;
+	f18: _acts = _ansi_actions + 25; goto execFuncs;
+	f8: _acts = _ansi_actions + 27; goto execFuncs;
 	f3: _acts = _ansi_actions + 29; goto execFuncs;
-	f14: _acts = _ansi_actions + 31; goto execFuncs;
-	f12: _acts = _ansi_actions + 34; goto execFuncs;
+	f7: _acts = _ansi_actions + 31; goto execFuncs;
+	f2: _acts = _ansi_actions + 33; goto execFuncs;
+	f20: _acts = _ansi_actions + 35; goto execFuncs;
+	f12: _acts = _ansi_actions + 37; goto execFuncs;
+	f15: _acts = _ansi_actions + 40; goto execFuncs;
+	f17: _acts = _ansi_actions + 43; goto execFuncs;
 
 execFuncs:
 	_nacts = *_acts++;
 	while ( _nacts-- > 0 ) {
 		switch ( *_acts++ ) {
 	case 0:
-/* #line 76 "user/ansi_parser.rl" */
+/* #line 117 "user/ansi_parser.rl" */
 	{
+			if ((*p) != 0) {
 				apars_handle_plainchar((*p));
 			}
+		}
 	break;
 	case 1:
-/* #line 83 "user/ansi_parser.rl" */
+/* #line 126 "user/ansi_parser.rl" */
 	{
 			// Reset the CSI builder
 			csi_leading = csi_char = 0;
 			csi_ni = 0;
+			csi_cnt = 0;
 
 			// Zero out digits
 			for(int i = 0; i < CSI_N_MAX; i++) {
 				csi_n[i] = 0;
 			}
 
-			{cs = 3;goto _again;}
+			{cs = 5;goto _again;}
 		}
 	break;
 	case 2:
-/* #line 96 "user/ansi_parser.rl" */
+/* #line 140 "user/ansi_parser.rl" */
 	{
 			csi_leading = (*p);
 		}
 	break;
 	case 3:
-/* #line 100 "user/ansi_parser.rl" */
+/* #line 144 "user/ansi_parser.rl" */
 	{
+			if (csi_cnt == 0) csi_cnt = 1;
 			// x10 + digit
 			if (csi_ni < CSI_N_MAX) {
 				csi_n[csi_ni] = csi_n[csi_ni]*10 + ((*p) - '0');
@@ -369,30 +489,31 @@ execFuncs:
 		}
 	break;
 	case 4:
-/* #line 107 "user/ansi_parser.rl" */
+/* #line 152 "user/ansi_parser.rl" */
 	{
+			if (csi_cnt == 0) csi_cnt = 1; // handle case when first arg is empty
+			csi_cnt++;
 			csi_ni++;
 		}
 	break;
 	case 5:
-/* #line 111 "user/ansi_parser.rl" */
+/* #line 158 "user/ansi_parser.rl" */
 	{
 			csi_char = (*p);
-
-			apars_handle_CSI(csi_leading, csi_n, csi_char);
-
+			apars_handle_CSI(csi_leading, csi_n, csi_cnt, csi_char);
 			{cs = 1;goto _again;}
 		}
 	break;
 	case 6:
-/* #line 119 "user/ansi_parser.rl" */
+/* #line 164 "user/ansi_parser.rl" */
 	{
+			ansi_warn("Invalid escape sequence discarded.");
 			apars_handle_badseq();
 			{cs = 1;goto _again;}
 		}
 	break;
 	case 7:
-/* #line 136 "user/ansi_parser.rl" */
+/* #line 182 "user/ansi_parser.rl" */
 	{
 			csi_ni = 0;
 
@@ -404,61 +525,83 @@ execFuncs:
 			osc_bi = 0;
 			osc_buffer[0] = '\0';
 
-			{cs = 5;goto _again;}
+			{cs = 7;goto _again;}
 		}
 	break;
 	case 8:
-/* #line 150 "user/ansi_parser.rl" */
+/* #line 197 "user/ansi_parser.rl" */
+	{
+			osc_bi = 0;
+			osc_buffer[0] = '\0';
+			{cs = 27;goto _again;}
+		}
+	break;
+	case 9:
+/* #line 203 "user/ansi_parser.rl" */
 	{
 			apars_handle_OSC_SetScreenSize(csi_n[0], csi_n[1]);
 			{cs = 1;goto _again;}
 		}
 	break;
-	case 9:
-/* #line 155 "user/ansi_parser.rl" */
+	case 10:
+/* #line 208 "user/ansi_parser.rl" */
 	{
 			osc_buffer[osc_bi++] = (*p);
 		}
 	break;
-	case 10:
-/* #line 159 "user/ansi_parser.rl" */
+	case 11:
+/* #line 212 "user/ansi_parser.rl" */
 	{
 			osc_buffer[osc_bi++] = '\0';
 			apars_handle_OSC_SetTitle(osc_buffer);
 			{cs = 1;goto _again;}
 		}
 	break;
-	case 11:
-/* #line 165 "user/ansi_parser.rl" */
+	case 12:
+/* #line 218 "user/ansi_parser.rl" */
 	{
 			osc_buffer[osc_bi++] = '\0';
 			apars_handle_OSC_SetButton(csi_n[0], osc_buffer);
 			{cs = 1;goto _again;}
 		}
 	break;
-	case 12:
-/* #line 177 "user/ansi_parser.rl" */
-	{
-			// Reset screen
-			apars_handle_RESET_cmd();
-			{cs = 1;goto _again;}
-		}
-	break;
 	case 13:
-/* #line 183 "user/ansi_parser.rl" */
+/* #line 250 "user/ansi_parser.rl" */
 	{
-			apars_handle_saveCursorAttrs();
+			apars_handle_hashCode((*p));
 			{cs = 1;goto _again;}
 		}
 	break;
 	case 14:
-/* #line 188 "user/ansi_parser.rl" */
+/* #line 255 "user/ansi_parser.rl" */
 	{
-			apars_handle_restoreCursorAttrs();
+			apars_handle_shortCode((*p));
 			{cs = 1;goto _again;}
 		}
 	break;
-/* #line 462 "user/ansi_parser.c" */
+	case 15:
+/* #line 260 "user/ansi_parser.rl" */
+	{
+			apars_handle_setXCtrls((*p));
+			{cs = 1;goto _again;}
+		}
+	break;
+	case 16:
+/* #line 265 "user/ansi_parser.rl" */
+	{
+			// abuse the buffer for storing the leading char
+			osc_buffer[0] = (*p);
+			{cs = 29;goto _again;}
+		}
+	break;
+	case 17:
+/* #line 271 "user/ansi_parser.rl" */
+	{
+			apars_handle_characterSet(osc_buffer[0], (*p));
+			{cs = 1;goto _again;}
+		}
+	break;
+/* #line 605 "user/ansi_parser.c" */
 		}
 	}
 	goto _again;
@@ -476,15 +619,16 @@ _again:
 	while ( __nacts-- > 0 ) {
 		switch ( *__acts++ ) {
 	case 6:
-/* #line 119 "user/ansi_parser.rl" */
+/* #line 164 "user/ansi_parser.rl" */
 	{
+			ansi_warn("Invalid escape sequence discarded.");
 			apars_handle_badseq();
 			{cs = 1;	if ( p == pe )
 		goto _test_eof;
 goto _again;}
 		}
 	break;
-/* #line 488 "user/ansi_parser.c" */
+/* #line 632 "user/ansi_parser.c" */
 		}
 	}
 	}
@@ -492,6 +636,8 @@ goto _again;}
 	_out: {}
 	}
 
-/* #line 208 "user/ansi_parser.rl" */
+/* #line 295 "user/ansi_parser.rl" */
 
 }
+
+// 'ESC k blah OSC_end' is a shortcut for setting title (k is defined in GNU screen as Title Definition String)

user/ansi_parser.h

@@ -5,18 +5,29 @@
 #include <screen.h>
 
 // Max nr of CSI parameters
-#define CSI_N_MAX 3
+#define CSI_N_MAX 10
 #define OSC_CHAR_MAX TERM_TITLE_LEN
 
-extern void apars_handle_badseq(void);
-extern void apars_handle_CSI(char leadchar, int *params, char keychar);
-extern void apars_handle_RESET_cmd(void);
 extern void apars_handle_plainchar(char c);
+extern void apars_handle_CSI(char leadchar, int *params, int count, char keychar);
 extern void apars_handle_OSC_SetScreenSize(int rows, int cols);
-extern void apars_handle_saveCursorAttrs(void);
-extern void apars_handle_restoreCursorAttrs(void);
 extern void apars_handle_OSC_SetButton(int num, const char *buffer);
 extern void apars_handle_OSC_SetTitle(const char *buffer);
+extern void apars_handle_shortCode(char c);
+extern void apars_handle_hashCode(char c);
+extern void apars_handle_characterSet(char leadchar, char c);
+extern void apars_handle_setXCtrls(char c);
+extern void apars_reset_utf8buffer(void);
+
+// defined in the makefile
+#if DEBUG_ANSI
+#define ansi_warn warn
+#define ansi_dbg dbg
+#else
+#define ansi_warn(...)
+#define ansi_dbg(...)
+#endif
+
 
 /**
  * \brief Linear ANSI chars stream parser
@@ -33,4 +44,7 @@ extern void apars_handle_OSC_SetTitle(const char *buffer);
  */
 void ansi_parser(const char *newdata, size_t len);
 
+/** This shows a short error message and prints the history (if any) */
+void apars_handle_badseq(void);
+
 #endif // ANSI_PARSER_H

user/ansi_parser.rl

@@ -16,10 +16,39 @@ static void ICACHE_FLASH_ATTR
 resetParserCb(void *arg) {
 	if (cs != ansi_start) {
 		cs = ansi_start;
-		warn("Parser timeout, state reset");
+		apars_reset_utf8buffer();
+		ansi_warn("Parser timeout, state reset");
 	}
 }
 
+#define HISTORY_LEN 16
+
+#if DEBUG_ANSI
+static char history[HISTORY_LEN + 1];
+#endif
+
+void ICACHE_FLASH_ATTR
+apars_handle_badseq(void)
+{
+#if DEBUG_ANSI
+	char buf1[HISTORY_LEN*3+2];
+	char buf2[HISTORY_LEN*3+2];
+	char *b1 = buf1;
+	char *b2 = buf2;
+	char c;
+
+	for(int i=0;i<HISTORY_LEN;i++) {
+		c = history[i];
+		b1 += sprintf(b1, "%2X ", c);
+		if (c < 32 || c > 127) c = '.';
+		b2 += sprintf(b2, "%c  ", c);
+	}
+
+	ansi_dbg("Context: %s", buf2);
+	ansi_dbg("         %s", buf1);
+#endif
+}
+
 /**
  * \brief Linear ANSI chars stream parser
  *
@@ -39,6 +68,7 @@ ansi_parser(const char *newdata, size_t len)
 	// The CSI code is built here
 	static char csi_leading;      //!< Leading char, 0 if none
 	static int  csi_ni;           //!< Number of the active digit
+	static int  csi_cnt;          //!< Digit count
 	static int  csi_n[CSI_N_MAX]; //!< Param digits
 	static char csi_char;         //!< CSI action char (end)
 	static char osc_buffer[OSC_CHAR_MAX];
@@ -54,15 +84,26 @@ ansi_parser(const char *newdata, size_t len)
 	// Init Ragel on the first run
 	if (cs == -1) {
 		%% write init;
+
+#if DEBUG_ANSI
+		memset(history, 0, sizeof(history));
+#endif
 	}
 
-	// schedule state reset
+	// schedule state reset after idle timeout
 	if (termconf->parser_tout_ms > 0) {
 		os_timer_disarm(&resetTim);
 		os_timer_setfn(&resetTim, resetParserCb, NULL);
 		os_timer_arm(&resetTim, termconf->parser_tout_ms, 0);
 	}
 
+#if DEBUG_ANSI
+	for(int i=len; i<HISTORY_LEN; i++) {
+		history[i-len] = history[i];
+	}
+	strcpy(&history[HISTORY_LEN-len], newdata);
+#endif
+
 	// The parser
 	%%{
 #/*
@@ -74,8 +115,10 @@ ansi_parser(const char *newdata, size_t len)
 		# --- Regular characters to be printed ---
 
 		action plain_char {
+			if (fc != 0) {
 				apars_handle_plainchar(fc);
 			}
+		}
 
 		# --- CSI CSI commands (Select Graphic Rendition) ---
 		# Text color & style
@@ -84,6 +127,7 @@ ansi_parser(const char *newdata, size_t len)
 			// Reset the CSI builder
 			csi_leading = csi_char = 0;
 			csi_ni = 0;
+			csi_cnt = 0;
 
 			// Zero out digits
 			for(int i = 0; i < CSI_N_MAX; i++) {
@@ -98,6 +142,7 @@ ansi_parser(const char *newdata, size_t len)
 		}
 
 		action CSI_digit {
+			if (csi_cnt == 0) csi_cnt = 1;
 			// x10 + digit
 			if (csi_ni < CSI_N_MAX) {
 				csi_n[csi_ni] = csi_n[csi_ni]*10 + (fc - '0');
@@ -105,18 +150,19 @@ ansi_parser(const char *newdata, size_t len)
 		}
 
 		action CSI_semi {
+			if (csi_cnt == 0) csi_cnt = 1; // handle case when first arg is empty
+			csi_cnt++;
 			csi_ni++;
 		}
 
 		action CSI_end {
 			csi_char = fc;
-
-			apars_handle_CSI(csi_leading, csi_n, csi_char);
-
+			apars_handle_CSI(csi_leading, csi_n, csi_cnt, csi_char);
 			fgoto main;
 		}
 
 		action errBadSeq {
+			ansi_warn("Invalid escape sequence discarded.");
 			apars_handle_badseq();
 			fgoto main;
 		}
@@ -127,7 +173,7 @@ ansi_parser(const char *newdata, size_t len)
 
 		CSI_body := ((32..47|60..64) @CSI_leading)?
 			((digit @CSI_digit)* ';' @CSI_semi)*
-			(digit @CSI_digit)* alpha @CSI_end $!errBadSeq;
+			(digit @CSI_digit)* (alpha|'`'|'@') @CSI_end $!errBadSeq;
 
 
 		# --- OSC commands (Operating System Commands) ---
@@ -147,6 +193,13 @@ ansi_parser(const char *newdata, size_t len)
 			fgoto OSC_body;
 		}
 
+		# collecting title string; this can also be entered by ESC k
+		action SetTitle_start {
+			osc_bi = 0;
+			osc_buffer[0] = '\0';
+			fgoto TITLE_body;
+		}
+
 		action OSC_resize {
 			apars_handle_OSC_SetScreenSize(csi_n[0], csi_n[1]);
 			fgoto main;
@@ -168,12 +221,16 @@ ansi_parser(const char *newdata, size_t len)
 			fgoto main;
 		}
 
+		# 0; is xterm title hack
 		OSC_body := (
-			("BTN" digit @CSI_digit '=' (NOESC @OSC_text_char)+ OSC_END @OSC_button) |
-			("TITLE=" (NOESC @OSC_text_char)+ OSC_END @OSC_title) |
+			("BTN" digit @CSI_digit '=' (NOESC @OSC_text_char)* OSC_END @OSC_button) |
+			("TITLE=" @SetTitle_start) |
+			("0;" (NOESC @OSC_text_char)* OSC_END @OSC_title) |
 			('W' (digit @CSI_digit)+ ';' @CSI_semi (digit @CSI_digit)+ OSC_END @OSC_resize)
 		) $!errBadSeq;
 
+		TITLE_body := (NOESC @OSC_text_char)* OSC_END @OSC_title $!errBadSeq;
+
 		action RESET_cmd {
 			// Reset screen
 			apars_handle_RESET_cmd();
@@ -190,16 +247,46 @@ ansi_parser(const char *newdata, size_t len)
 			fgoto main;
 		}
 
+		action HASH_code {
+			apars_handle_hashCode(fc);
+			fgoto main;
+		}
+
+		action SHORT_code {
+			apars_handle_shortCode(fc);
+			fgoto main;
+		}
+
+		action SetXCtrls {
+			apars_handle_setXCtrls(fc);
+			fgoto main;
+		}
+
+		action CharsetCmd_start {
+			// abuse the buffer for storing the leading char
+			osc_buffer[0] = fc;
+			fgoto charsetcmd_body;
+		}
+
+		action CharsetCmd_end {
+			apars_handle_characterSet(osc_buffer[0], fc);
+			fgoto main;
+		}
+
+		charsetcmd_body := (any @CharsetCmd_end) $!errBadSeq;
+
 		# --- Main parser loop ---
 
 		main :=
 			(
 				(NOESC @plain_char)* ESC (
-					'[' @CSI_start |
-					']' @OSC_start |
-					'c' @RESET_cmd |
-			        '7' @CSI_SaveCursorAttrs |
-					'8' @CSI_RestoreCursorAttrs
+					('[' @CSI_start) |
+					(']' @OSC_start) |
+					('#' digit @HASH_code) |
+					('k' @SetTitle_start) |
+					([a-jl-zA-Z0-9=<>] @SHORT_code) |
+					([()*+-./] @CharsetCmd_start) |
+					(' ' [FG] @SetXCtrls)
 				)
 			)+ $!errBadSeq;
 
@@ -207,3 +294,5 @@ ansi_parser(const char *newdata, size_t len)
 #*/
 	}%%
 }
+
+// 'ESC k blah OSC_end' is a shortcut for setting title (k is defined in GNU screen as Title Definition String)

user/ansi_parser_callbacks.c

@@ -9,7 +9,8 @@
 #include "screen.h"
 #include "ansi_parser.h"
 #include "uart_driver.h"
-#include "persist.h"
+
+// screen manpage - https://www.gnu.org/software/screen/manual/html_node/Control-Sequences.html
 
 static char utf_collect[4];
 static int utf_i = 0;
@@ -21,9 +22,17 @@ static int utf_j = 0;
 void ICACHE_FLASH_ATTR
 apars_handle_plainchar(char c)
 {
+	if (c == 7) return; // BELL - beep (TODO play beep in browser)
+
 	// collecting unicode glyphs...
 	if (c & 0x80) {
 		if (utf_i == 0) {
+			// start
+			if (c == 192 || c == 193 || c >= 245) {
+				// forbidden codes
+				goto fail;
+			}
+
 			if ((c & 0xE0) == 0xC0) {
 				utf_i = 2;
 			}
@@ -33,33 +42,68 @@ apars_handle_plainchar(char c)
 			else if ((c & 0xF8) == 0xF0) {
 				utf_i = 4;
 			}
+			else {
+				// chars over 127 that don't start unicode sequences
+				goto fail;
+			}
 
 			utf_collect[0] = c;
 			utf_j = 1;
 		}
+		else {
+			if ((c & 0xC0) != 0x80) {
+				goto fail;
+			}
 			else {
 				utf_collect[utf_j++] = c;
 				if (utf_j >= utf_i) {
 					screen_putchar(utf_collect);
-				utf_i = 0;
-				utf_j = 0;
-				memset(utf_collect, 0, 4);
+					apars_reset_utf8buffer();
+				}
 			}
 		}
 	}
 	else {
+		if (c == 14) {
+			screen_set_charset_n(1);
+			return;
+		}
+		if (c == 15) {
+			screen_set_charset_n(0);
+			return;
+		}
+
 		utf_collect[0] = c;
 		utf_collect[1] = 0; // just to make sure it's closed...
 		screen_putchar(utf_collect);
 	}
+
+	return;
+fail:
+	ansi_warn("Bad UTF-8");
+	apars_reset_utf8buffer();
 }
 
-/**
- * Bad sequence received, show warning
- */
-void apars_handle_badseq(void)
+void ICACHE_FLASH_ATTR
+apars_reset_utf8buffer(void)
 {
-	warn("Invalid escape sequence discarded.");
+	utf_i = 0;
+	utf_j = 0;
+	memset(utf_collect, 0, 4);
+}
+
+void ICACHE_FLASH_ATTR
+apars_handle_characterSet(char leadchar, char c)
+{
+	if (leadchar == '(') screen_set_charset(0, c);
+	else if (leadchar == ')') screen_set_charset(1, c);
+}
+
+void ICACHE_FLASH_ATTR
+apars_handle_setXCtrls(char c)
+{
+	// this does not seem to do anything, sent by some unix programs
+//	ansi_warn("NOIMPL Select %cbit ctrls", c=='F'? '7':'8');
 }
 
 /**
@@ -69,47 +113,31 @@ void apars_handle_badseq(void)
  * \param keychar - the char terminating the sequence
  */
 void ICACHE_FLASH_ATTR
-apars_handle_CSI(char leadchar, int *params, char keychar)
+apars_handle_CSI(char leadchar, int *params, int count, char keychar)
 {
-	/*
-		Implemented codes (from Wikipedia)
-
-		CSI n A	CUU – Cursor Up
-		CSI n B	CUD – Cursor Down
-		CSI n C	CUF – Cursor Forward
-		CSI n D	CUB – Cursor Back
-		CSI n E	CNL – Cursor Next Line
-		CSI n F	CPL – Cursor Previous Line
-		CSI n G	CHA – Cursor Horizontal Absolute
-		CSI n ; m H	CUP – Cursor Position
-		CSI n J	ED – Erase Display
-		CSI n K	EL – Erase in Line
-		CSI n S	SU – Scroll Up
-		CSI n T	SD – Scroll Down
-		CSI n ; m f	HVP – Horizontal and Vertical Position
-		CSI n m	SGR – Select Graphic Rendition  (Implemented only some)
-		CSI 6n	DSR – Device Status Report
-		CSI s	SCP – Save Cursor Position
-		CSI u	RCP – Restore Cursor Position
-		CSI ?25l	DECTCEM	Hides the cursor
-		CSI ?25h	DECTCEM	Shows the cursor
-	*/
-
 	int n1 = params[0];
 	int n2 = params[1];
-//	int n3 = params[2];
+	int n3 = params[2];
+	static char buf[20];
 
 	// defaults
 	switch (keychar) {
-		case 'A':
+		case 'A': // move
 		case 'B':
 		case 'C':
 		case 'D':
 		case 'E':
 		case 'F':
-		case 'G':
-		case 'S':
+		case 'G': // set X
+		case '`':
+		case 'S': // scrolling
 		case 'T':
+		case 'X': // clear in line
+		case 'd': // set Y
+		case 'L':
+		case 'M':
+		case '@':
+		case 'P':
 			if (n1 == 0) n1 = 1;
 			break;
 
@@ -127,60 +155,73 @@ apars_handle_CSI(char leadchar, int *params, char keychar)
 
 	switch (keychar) {
 		// CUU CUD CUF CUB
-		case 'A': screen_cursor_move(-n1, 0); break;
-		case 'B': screen_cursor_move(n1, 0);  break;
-		case 'C': screen_cursor_move(0, n1);  break;
-		case 'D': screen_cursor_move(0, -n1); break;
+		case 'A': screen_cursor_move(-n1, 0, false); break;
+		case 'B': screen_cursor_move(n1, 0, false);  break;
+		case 'C': screen_cursor_move(0, n1, false);  break;
+		case 'D': screen_cursor_move(0, -n1, false); break;
 
-		case 'E': // CNL
-			screen_cursor_move(n1, 0);
+		case 'E': // CNL - Cursor Next Line
+			screen_cursor_move(n1, 0, false);
 			screen_cursor_set_x(0);
 			break;
 
-		case 'F': // CPL
-			screen_cursor_move(-n1, 0);
+		case 'F': // CPL - Cursor Prev Line
+			screen_cursor_move(-n1, 0, false);
 			screen_cursor_set_x(0);
 			break;
 
-			// CHA
+			// Set X
 		case 'G':
-			screen_cursor_set_x(n1 - 1); break; // 1-based
+		case '`': // alternate code
+			screen_cursor_set_x(n1 - 1);
+			break; // 1-based
 
-			// SU, SD
+			// Set Y
+		case 'd':
+			screen_cursor_set_y(n1 - 1);
+			break; // 1-based
+
+			// clear in line
+		case 'X':
+			screen_clear_in_line(n1);
+			break; // 1-based
+
+			// SU, SD - scroll up/down
 		case 'S': screen_scroll_up(n1);	  break;
 		case 'T': screen_scroll_down(n1); break;
 
-			// CUP,HVP
+			// CUP,HVP - set position
 		case 'H':
 		case 'f':
-			screen_cursor_set(n1-1, n2-1); break; // 1-based
+			screen_cursor_set(n1-1, n2-1);
+			break; // 1-based
 
-		case 'J': // ED
+		case 'J': // ED - clear screen
 			if (n1 == 0) {
-				screen_clear(CLEAR_TO_CURSOR);
-			} else if (n1 == 1) {
 				screen_clear(CLEAR_FROM_CURSOR);
+			} else if (n1 == 1) {
+				screen_clear(CLEAR_TO_CURSOR);
 			} else {
 				screen_clear(CLEAR_ALL);
 				screen_cursor_set(0, 0);
 			}
 			break;
 
-		case 'K': // EL
+		case 'K': // EL - clear line
 			if (n1 == 0) {
-				screen_clear_line(CLEAR_TO_CURSOR);
-			} else if (n1 == 1) {
 				screen_clear_line(CLEAR_FROM_CURSOR);
+			} else if (n1 == 1) {
+				screen_clear_line(CLEAR_TO_CURSOR);
 			} else {
 				screen_clear_line(CLEAR_ALL);
 			}
 			break;
 
-			// SCP, RCP
+			// SCP, RCP - save/restore position
 		case 's': screen_cursor_save(0); break;
 		case 'u': screen_cursor_restore(0); break;
 
-		case 'n':
+		case 'n': // queries
 			if (n1 == 6) {
 				// Query cursor position
 				char buf[20];
@@ -193,71 +234,237 @@ apars_handle_CSI(char leadchar, int *params, char keychar)
 				// Query device status - reply "Device is OK"
 				UART_WriteString(UART0, "\033[0n", UART_TIMEOUT_US);
 			}
+			else {
+				ansi_warn("NOIMPL query %d", n1);
+			}
 			break;
 
 			// DECTCEM feature enable / disable
 
-		case 'h':
+		case 'h': // feature enable
 			if (leadchar == '?') {
-				if (n1 == 25) {
-					screen_cursor_enable(1);
-				} else if (n1 == 7) {
-					screen_wrap_enable(1);
+				if (n1 == 25) screen_cursor_enable(1);
+				else if (n1 == 7) screen_wrap_enable(1);
+				else if (n1 == 1) {
+					// TODO something with arrow keys??
+				}
+				else {
+					ansi_warn("NOIMPL DEC opt %d", n1);
+				}
+			}
+			else {
+				if (n1 == 4) {
+					// TODO insert mode, i think this is to suppress user input
+				}
+				else {
+					ansi_warn("NOIMPL flag %d", n1);
 				}
 			}
 			break;
 
-		case 'l':
+		case 'l': // feature disable
 			if (leadchar == '?') {
-				if (n1 == 25) {
-					screen_cursor_enable(0);
-				} else if (n1 == 7) {
-					screen_wrap_enable(0);
+				if (n1 == 25) screen_cursor_enable(0);
+				else if (n1 == 7) screen_wrap_enable(0);
+				else if (n1 == 1) {
+					// TODO see above
+				}
+				else {
+					ansi_warn("NOIMPL DEC opt %d", n1);
+				}
+			}
+			else {
+				if (n1 == 4) {
+					// TODO see above
+				}
+				else {
+					ansi_warn("NOIMPL flag %d", n1);
 				}
 			}
 			break;
 
-		case 'm': // SGR
+		case 'm': // SGR - graphics rendition aka attributes
+			if (count == 0) {
+				count = 1; // this makes it work as 0 (reset)
+			}
+
 			// iterate arguments
-			for (int i = 0; i < CSI_N_MAX; i++) {
+			for (int i = 0; i < count; i++) {
 				int n = params[i];
 
-				if (i == 0 && n == 0) { // reset SGR
+				if (n == 0) { // reset SGR
 					screen_reset_cursor(); // resets colors, inverse and bold.
-					break; // cannot combine reset with others
 				}
-				else if (n >= 30 && n <= 37) screen_set_fg(n-30); // ANSI normal fg
-				else if (n >= 40 && n <= 47) screen_set_bg(n-40); // ANSI normal bg
-				else if (n == 39) screen_set_fg(7); // default fg
-				else if (n == 49) screen_set_bg(false); // default bg
-				else if (n == 7) screen_inverse(true); // inverse
-				else if (n == 27) screen_inverse(false); // positive
-				else if (n == 1) screen_set_bold(true); // bold
-				else if (n == 21 || n == 22) screen_set_bold(false); // bold off
-				else if (n >= 90 && n <= 97) screen_set_fg(n-90+8); // AIX bright fg
-				else if (n >= 100 && n <= 107) screen_set_bg(n-100+8); // AIX bright bg
+				else if (n >= 30 && n <= 37) screen_set_fg((Color) (n - 30)); // ANSI normal fg
+				else if (n >= 40 && n <= 47) screen_set_bg((Color) (n - 40)); // ANSI normal bg
+				else if (n == 39) screen_set_fg(termconf_scratch.default_fg); // default fg
+				else if (n == 49) screen_set_bg(termconf_scratch.default_bg); // default bg
+
+				else if (n == 1) screen_attr_enable(ATTR_BOLD);
+				else if (n == 2) screen_attr_enable(ATTR_FAINT);
+				else if (n == 3) screen_attr_enable(ATTR_ITALIC);
+				else if (n == 4) screen_attr_enable(ATTR_UNDERLINE);
+				else if (n == 5 || n == 6) screen_attr_enable(ATTR_BLINK); // 6 - rapid blink, not supported
+				else if (n == 7) screen_inverse_enable(true);
+				else if (n == 9) screen_attr_enable(ATTR_STRIKE);
+
+				else if (n == 20) screen_attr_enable(ATTR_FRAKTUR);
+				else if (n == 21) screen_attr_disable(ATTR_BOLD);
+				else if (n == 22) screen_attr_disable(ATTR_FAINT);
+				else if (n == 23) screen_attr_disable(ATTR_ITALIC|ATTR_FRAKTUR);
+				else if (n == 24) screen_attr_disable(ATTR_UNDERLINE);
+				else if (n == 25) screen_attr_disable(ATTR_BLINK);
+				else if (n == 27) screen_inverse_enable(false);
+				else if (n == 29) screen_attr_disable(ATTR_STRIKE);
+
+				else if (n >= 90 && n <= 97) screen_set_fg((Color) (n - 90 + 8)); // AIX bright fg
+				else if (n >= 100 && n <= 107) screen_set_bg((Color) (n - 100 + 8)); // AIX bright bg
+				else {
+						ansi_warn("NOIMPL SGR attr %d", n);
+				}
 			}
 			break;
+
+		case 't': // xterm hacks
+			switch(n1) {
+				case 8: // set size
+					screen_resize(n2, n3);
+					break;
+				case 18: // report size
+					printf(buf, "\033[8;%d;%dt", termconf_scratch.height, termconf_scratch.width);
+					UART_WriteString(UART0, buf, UART_TIMEOUT_US);
+					break;
+				case 11: // Report iconified -> is not iconified
+					UART_WriteString(UART0, "\033[1t", UART_TIMEOUT_US);
+					break;
+				case 21: // Report title
+					UART_WriteString(UART0, "\033]L", UART_TIMEOUT_US);
+					UART_WriteString(UART0, termconf_scratch.title, UART_TIMEOUT_US);
+					UART_WriteString(UART0, "\033\\", UART_TIMEOUT_US);
+					break;
+				case 24: // Set Height only
+					screen_resize(n2, termconf_scratch.width);
+					break;
+			}
+			break;
+
+		case 'L':
+			screen_insert_lines(n1);
+			break;
+
+		case 'M':
+			screen_delete_lines(n1);
+			break;
+
+		case '@':
+			screen_insert_characters(n1);
+			break;
+
+		case 'P':
+			screen_delete_characters(n1);
+			break;
+
+		case 'r':
+			// TODO scrolling region
+//			ansi_warn("NOIMPL scrolling region");
+			break;
+
+		case 'g':
+			// TODO clear tab
+			ansi_warn("NOIMPL clear tab");
+			break;
+
+		case 'Z':
+			// TODO back tab
+			ansi_warn("NOIMPL cursor back tab");
+			break;
+
+		case 'q':
+			// TODO setmode (??)
+			ansi_warn("NOIMPL CSI setmode %d", n1);
+			break;
+
+		case 'p':
+			if (leadchar == '!') {
+				info("SOFT RESET!");
+				system_restart();
+			}
+			break;
+
+		case 'c':
+			// report capabilities (pretend we're vt4xx)
+			UART_WriteString(UART0, "\033[?64;22;c", UART_TIMEOUT_US);
+			break;
+
+		default:
+			ansi_warn("Unknown CSI: %c", keychar);
+			apars_handle_badseq();
 	}
 }
 
-void ICACHE_FLASH_ATTR apars_handle_saveCursorAttrs(void)
+/** codes in the format ESC # n */
+void ICACHE_FLASH_ATTR apars_handle_hashCode(char c)
 {
-	screen_cursor_save(1);
+	switch(c) {
+		case '8':
+			screen_fill_with_E();
+			break;
+
+		default:
+			ansi_warn("Unknown # sequence: %c", c);
+	}
 }
 
-void ICACHE_FLASH_ATTR apars_handle_restoreCursorAttrs(void)
-{
-	screen_cursor_restore(1);
-}
-
-/**
- * \brief Handle a request to reset the display device
- */
-void ICACHE_FLASH_ATTR
-apars_handle_RESET_cmd(void)
+/** those are single-character escape codes (ESC x) */
+void ICACHE_FLASH_ATTR apars_handle_shortCode(char c)
 {
+	switch(c) {
+		case 'c': // screen reset
 			screen_reset();
+			break;
+
+		case '7': // save cursor + attrs
+			screen_cursor_save(true);
+			break;
+
+		case '8': // restore cursor + attrs
+			screen_cursor_restore(true);
+			break;
+
+		case 'E': // same as CR LF
+			screen_cursor_move(1, 0, false);
+			screen_cursor_set_x(0);
+			break;
+
+		case 'D': // move cursor down, scroll screen up if needed
+			screen_cursor_move(1, 0, true);
+			break;
+
+		case 'M': // move cursor up, scroll screen down if needed
+			screen_cursor_move(-1, 0, true);
+			break;
+
+		case 'H':
+			// TODO set tab
+//			ansi_warn("NOIMPL set tab");
+			break;
+
+		// TODO those don't seem to do anything
+		case '>':
+//			ansi_warn("NOIMPL NUMKP");
+			break;
+
+		case '<':
+//			ansi_warn("NOIMPL SETANSI");
+			break;
+
+		case '=':
+//			ansi_warn("NOIMPL ALTKP");
+			break;
+
+		default:
+			ansi_warn("Unknown 1-char seq %c", c);
+	}
 }
 
 /**

user/ansi_parser_callbacks.h

@@ -1,14 +1,15 @@
 #ifndef ANSI_PARSER_CALLBACKS_H
 #define ANSI_PARSER_CALLBACKS_H
 
-void apars_handle_badseq(void);
-void apars_handle_CSI(char leadchar, int *params, char keychar);
-void apars_handle_RESET_cmd(void);
 void apars_handle_plainchar(char c);
+void apars_handle_CSI(char leadchar, int *params, int count, char keychar);
 void apars_handle_OSC_SetScreenSize(int rows, int cols);
-void apars_handle_saveCursorAttrs(void);
-void apars_handle_restoreCursorAttrs(void);
 void apars_handle_OSC_SetButton(int num, const char *buffer);
 void apars_handle_OSC_SetTitle(const char *buffer);
+void apars_handle_shortCode(char c);
+void apars_handle_hashCode(char c);
+void apars_handle_characterSet(char leadchar, char c);
+void apars_handle_setXCtrls(char c);
+void apars_reset_utf8buffer(void);
 
 #endif //ESP_VT100_FIRMWARE_ANSI_PARSER_CALLBACKS_H

user/cgi_sockets.c

@@ -98,7 +98,7 @@ void ICACHE_FLASH_ATTR updateSockRx(Websock *ws, char *data, int len, int flags)
 
 	// TODO re-implement those, use single byte markers and B2 encoding
 
-	dbg("Sock RX str: %s, len %d", data, len);
+	ws_dbg("Sock RX str: %s, len %d", data, len);
 
 	if (strstarts(data, "STR:")) {
 		// pass string verbatim
@@ -134,24 +134,24 @@ void ICACHE_FLASH_ATTR updateSockRx(Websock *ws, char *data, int len, int flags)
 		}
 
 		if (!screen_isCoordValid(y, x)) {
-			warn("Mouse input at invalid coordinates");
+			ws_warn("Mouse input at invalid coordinates");
 			return;
 		}
 
-		dbg("Screen clicked at row %d, col %d", y+1, x+1);
+		ws_dbg("Screen clicked at row %d, col %d", y+1, x+1);
 
 		// Send as 1-based to user
 		sprintf(buf, "\033[%d;%dM", y+1, x+1);
 		UART_WriteString(UART0, buf, UART_TIMEOUT_US);
 	}
 	else {
-		warn("Bad command.");
+		ws_warn("Bad command.");
 	}
 }
 
 /** Socket connected for updates */
 void ICACHE_FLASH_ATTR updateSockConnect(Websock *ws)
 {
-	info("Socket connected to "URL_WS_UPDATE);
+	ws_info("Socket connected to "URL_WS_UPDATE);
 	ws->recvCb = updateSockRx;
 }

user/cgi_sockets.h

@@ -9,4 +9,15 @@
 void updateSockConnect(Websock *ws);
 void screen_notifyChange(ScreenNotifyChangeTopic topic);
 
+// defined in the makefile
+#if DEBUG_INPUT
+#define ws_warn warn
+#define ws_dbg dbg
+#define ws_info info
+#else
+#define ws_warn(...)
+#define ws_dbg(...)
+#define ws_info(...)
+#endif
+
 #endif //CGI_SOCKETS_H

user/cgi_term_cfg.c

@@ -22,6 +22,8 @@ cgiTermCfgSetParams(HttpdConnData *connData)
 	char redir_url_buf[100];
 	int n, w, h;
 
+	bool shall_clear_screen = false;
+
 	char *redir_url = redir_url_buf;
 	redir_url += sprintf(redir_url, SET_REDIR_ERR);
 	// we'll test if anything was printed by looking for \0 in failed_keys_buf
@@ -41,8 +43,11 @@ cgiTermCfgSetParams(HttpdConnData *connData)
 				h = atoi(buff);
 				if (h > 1) {
 					if (w * h <= MAX_SCREEN_SIZE) {
+						if (termconf->width != w || termconf->height != h) {
 							termconf->width = w;
 							termconf->height = h;
+							shall_clear_screen = true;
+						}
 					} else {
 						warn("Bad dimensions: %d x %d (total %d)", w, h, w*h);
 						redir_url += sprintf(redir_url, "term_width,term_height,");
@@ -66,7 +71,10 @@ cgiTermCfgSetParams(HttpdConnData *connData)
 		dbg("Screen default BG: %s", buff);
 		n = atoi(buff);
 		if (n >= 0 && n < 16) {
+			if (termconf->default_bg != n) {
 				termconf->default_bg = (u8) n;
+				shall_clear_screen = true;
+			}
 		} else {
 			warn("Bad color %s", buff);
 			redir_url += sprintf(redir_url, "default_bg,");
@@ -88,7 +96,10 @@ cgiTermCfgSetParams(HttpdConnData *connData)
 		dbg("Screen default FG: %s", buff);
 		n = atoi(buff);
 		if (n >= 0 && n < 16) {
+			if (termconf->default_fg != n) {
 				termconf->default_fg = (u8) n;
+				shall_clear_screen = true;
+			}
 		} else {
 			warn("Bad color %s", buff);
 			redir_url += sprintf(redir_url, "default_fg,");
@@ -123,9 +134,14 @@ cgiTermCfgSetParams(HttpdConnData *connData)
 		// All was OK
 		info("Set term params - success, saving...");
 
-		terminal_apply_settings();
 		persist_store();
 
+		if (shall_clear_screen) {
+			terminal_apply_settings();
+		} else {
+			terminal_apply_settings_noclear();
+		}
+
 		httpdRedirect(connData, SET_REDIR_SUC);
 	} else {
 		warn("Some settings did not validate, asking for correction");

user/screen.c

@@ -8,6 +8,9 @@
 TerminalConfigBundle * const termconf = &persist.current.termconf;
 TerminalConfigBundle termconf_scratch;
 
+// forward declare
+static void utf8_remap(char* out, char g, char table);
+
 #define W termconf_scratch.width
 #define H termconf_scratch.height
 
@@ -31,6 +34,12 @@ void terminal_restore_defaults(void)
  * Apply settings after eg. restore from defaults
  */
 void terminal_apply_settings(void)
+{
+	terminal_apply_settings_noclear();
+	screen_init();
+}
+
+void terminal_apply_settings_noclear(void)
 {
 	memcpy(&termconf_scratch, termconf, sizeof(TerminalConfigBundle));
 	if (W*H >= MAX_SCREEN_SIZE) {
@@ -39,8 +48,8 @@ void terminal_apply_settings(void)
 		terminal_restore_defaults();
 		persist_store();
 		memcpy(&termconf_scratch, termconf, sizeof(TerminalConfigBundle));
-	}
 		screen_init();
+	}
 }
 
 /**
@@ -55,7 +64,7 @@ typedef struct __attribute__((packed)){
 	char c[4]; // space for a full unicode character
 	Color fg : 4;
 	Color bg : 4;
-	bool bold : 1;
+	u8 attrs;
 } Cell;
 
 /**
@@ -69,10 +78,15 @@ static Cell screen[MAX_SCREEN_SIZE];
 static struct {
 	int x;    //!< X coordinate
 	int y;    //!< Y coordinate
-	bool visible;    //!< Visible
-	bool inverse;    //!< Inverse colors
 	bool autowrap;   //!< Wrapping when EOL
-	bool bold;       //!< Bold style
+	bool visible;    //!< Visible (not attribute, DEC special)
+	bool inverse;
+	u8 attrs;
+
+	char charset0;
+	char charset1;
+	int charsetN;
+
 	Color fg;        //!< Foreground color for writing
 	Color bg;        //!< Background color for writing
 } cursor;
@@ -83,10 +97,10 @@ static struct {
 static struct {
 	int x;
 	int y;
-
-	// optionally saved attrs
+	// mark that attrs are saved
 	bool withAttrs;
-	bool inverse;
+	u8 attrs;
+	bool inverse; // attribute that's not in the bitfield
 	Color fg;
 	Color bg;
 } cursor_sav;
@@ -114,16 +128,20 @@ static inline void
 clear_range(unsigned int from, unsigned int to)
 {
 	if (to >= W*H) to = W*H-1;
-	Color fg = cursor.inverse ? cursor.bg : cursor.fg;
-	Color bg = cursor.inverse ? cursor.fg : cursor.bg;
+	Color fg = (cursor.inverse) ? cursor.bg : cursor.fg;
+	Color bg = (cursor.inverse) ? cursor.fg : cursor.bg;
+
+	Cell sample;
+	sample.c[0] = ' ';
+	sample.c[1] = 0;
+	sample.c[2] = 0;
+	sample.c[3] = 0;
+	sample.fg = fg;
+	sample.bg = bg;
+	sample.attrs = 0;
+
 	for (unsigned int i = from; i <= to; i++) {
-		screen[i].c[0] = ' ';
-		screen[i].c[1] = 0;
-		screen[i].c[2] = 0;
-		screen[i].c[3] = 0;
-		screen[i].fg = fg;
-		screen[i].bg = bg;
-		screen[i].bold = false;
+		memcpy(&screen[i], &sample, sizeof(Cell));
 	}
 }
 
@@ -138,9 +156,12 @@ cursor_reset(void)
 	cursor.fg = termconf_scratch.default_fg;
 	cursor.bg = termconf_scratch.default_bg;
 	cursor.visible = 1;
-	cursor.inverse = 0;
 	cursor.autowrap = 1;
-	cursor.bold = 0;
+	cursor.attrs = 0;
+
+	cursor.charset0 = 'B';
+	cursor.charset1 = '0';
+	cursor.charsetN = 0;
 }
 
 //endregion
@@ -176,12 +197,10 @@ screen_reset(void)
 void ICACHE_FLASH_ATTR
 screen_reset_cursor(void)
 {
-	NOTIFY_LOCK();
 	cursor.fg = termconf_scratch.default_fg;
 	cursor.bg = termconf_scratch.default_bg;
-	cursor.inverse = 0;
-	cursor.bold = 0;
-	NOTIFY_DONE();
+	cursor.attrs = 0;
+	cursor.inverse = false;
 }
 
 /**
@@ -230,10 +249,121 @@ screen_clear_line(ClearMode mode)
 	NOTIFY_DONE();
 }
 
+void ICACHE_FLASH_ATTR
+screen_clear_in_line(unsigned int count)
+{
+	if (cursor.x + count >= W) {
+		screen_clear_line(CLEAR_FROM_CURSOR);
+	}
+	else {
+		NOTIFY_LOCK();
+		clear_range(cursor.y * W + cursor.x, cursor.y * W + cursor.x + count - 1);
+		NOTIFY_DONE();
+	}
+}
+
+void ICACHE_FLASH_ATTR
+screen_fill_with_E(void)
+{
+	NOTIFY_LOCK();
+	Cell sample;
+	sample.c[0] = 'E';
+	sample.c[1] = 0;
+	sample.c[2] = 0;
+	sample.c[3] = 0;
+	sample.fg = termconf_scratch.default_fg;
+	sample.bg = termconf_scratch.default_bg;
+	sample.attrs = 0;
+
+	for (unsigned int i = 0; i <= W*H-1; i++) {
+		memcpy(&screen[i], &sample, sizeof(Cell));
+	}
+	NOTIFY_DONE();
+}
+
 //endregion
 
 //region Screen manipulation
 
+void screen_insert_lines(unsigned int lines)
+{
+	NOTIFY_LOCK();
+	// shift the following lines
+	int targetStart = cursor.y + lines;
+	if (targetStart >= H) {
+		targetStart = H;
+	} else {
+		// do the moving
+		for (int i = H-1; i >= targetStart; i--) {
+			memcpy(screen+i*W, screen+(i-lines)*W, sizeof(Cell)*W);
+		}
+	}
+
+	// clear the first line
+	screen_clear_line(CLEAR_ALL);
+	// copy it to the rest of the cleared region
+	for (int i = cursor.y+1; i < targetStart; i++) {
+		memcpy(screen+i*W, screen+cursor.y*W, sizeof(Cell)*W);
+	}
+	NOTIFY_DONE();
+}
+
+void screen_delete_lines(unsigned int lines)
+{
+	NOTIFY_LOCK();
+	// shift lines up
+	int targetEnd = H - 1 - lines;
+	if (targetEnd <= cursor.y) {
+		targetEnd = cursor.y;
+	} else {
+		// do the moving
+		for (int i = cursor.y; i <= targetEnd; i++) {
+			memcpy(screen+i*W, screen+(i+lines)*W, sizeof(Cell)*W);
+		}
+	}
+
+	// clear the rest
+	clear_range(targetEnd*W, W*H-1);
+	NOTIFY_DONE();
+}
+
+void screen_insert_characters(unsigned int count)
+{
+	NOTIFY_LOCK();
+	int targetStart = cursor.x + count;
+	if (targetStart >= W) {
+		targetStart = W-1;
+	} else {
+		// do the moving
+		for (int i = W-1; i >= targetStart; i--) {
+			memcpy(screen+cursor.y*W+i, screen+cursor.y*W+(i-count), sizeof(Cell));
+		}
+	}
+
+	clear_range(cursor.y*W+cursor.x, cursor.y*W+targetStart-1);
+	NOTIFY_DONE();
+}
+
+void screen_delete_characters(unsigned int count)
+{
+	NOTIFY_LOCK();
+	int targetEnd = W - count;
+	if (targetEnd > cursor.x) {
+		// do the moving
+		for (int i = cursor.x; i <= targetEnd; i++) {
+			memcpy(screen+cursor.y*W+i, screen+cursor.y*W+(i+count), sizeof(Cell));
+		}
+	}
+
+	if (targetEnd <= cursor.x) {
+		screen_clear_line(CLEAR_FROM_CURSOR);
+	}
+	else {
+		clear_range(cursor.y * W + (W - count), (cursor.y + 1) * W - 1);
+	}
+	NOTIFY_DONE();
+}
+
 /**
  * Change the screen size
  *
@@ -373,7 +503,7 @@ screen_cursor_set_y(int y)
  * Relative cursor move
  */
 void ICACHE_FLASH_ATTR
-screen_cursor_move(int dy, int dx)
+screen_cursor_move(int dy, int dx, bool scroll)
 {
 	NOTIFY_LOCK();
 	int move;
@@ -386,13 +516,13 @@ screen_cursor_move(int dy, int dx)
 	if (cursor.y < 0) {
 		move = -cursor.y;
 		cursor.y = 0;
-		screen_scroll_down((unsigned int)move);
+		if (scroll) screen_scroll_down((unsigned int)move);
 	}
 
 	if (cursor.y >= H) {
 		move = cursor.y - (H - 1);
 		cursor.y = H - 1;
-		screen_scroll_up((unsigned int)move);
+		if (scroll) screen_scroll_up((unsigned int)move);
 	}
 
 	NOTIFY_DONE();
@@ -412,11 +542,11 @@ screen_cursor_save(bool withAttrs)
 	if (withAttrs) {
 		cursor_sav.fg = cursor.fg;
 		cursor_sav.bg = cursor.bg;
-		cursor_sav.inverse = cursor.inverse;
+		cursor_sav.attrs = cursor.attrs;
 	} else {
 		cursor_sav.fg = termconf_scratch.default_fg;
 		cursor_sav.bg = termconf_scratch.default_bg;
-		cursor_sav.inverse = 0;
+		cursor_sav.attrs = 0; // avoid leftovers if the wrong restore is used
 	}
 }
 
@@ -433,7 +563,7 @@ screen_cursor_restore(bool withAttrs)
 	if (withAttrs) {
 		cursor.fg = cursor_sav.fg;
 		cursor.bg = cursor_sav.bg;
-		cursor.inverse = cursor_sav.inverse;
+		cursor.attrs = cursor_sav.attrs;
 	}
 
 	NOTIFY_DONE();
@@ -485,43 +615,19 @@ screen_set_bg(Color color)
 	cursor.bg = color;
 }
 
-/**
- * Set cursor foreground and background color
- */
-void ICACHE_FLASH_ATTR
-screen_set_colors(Color fg, Color bg)
+void screen_attr_enable(u8 attrs)
 {
-	screen_set_fg(fg);
-	screen_set_bg(bg);
+	cursor.attrs |= attrs;
 }
 
-/**
- * Invert colors
- */
-void ICACHE_FLASH_ATTR
-screen_inverse(bool inverse)
+void screen_attr_disable(u8 attrs)
 {
-	cursor.inverse = inverse;
+	cursor.attrs &= ~attrs;
 }
 
-/**
- * Make foreground bright.
- *
- * This relates to the '1' SGR command which originally means
- * "bold font". We interpret that as "Bright", similar to other
- * terminal emulators.
- *
- * Note that the bright colors can be used without bold using the 90+ codes
- */
-void ICACHE_FLASH_ATTR
-screen_set_bold(bool bold)
+void screen_inverse_enable(bool ena)
 {
-	if (!bold) {
-		cursor.fg = (Color) (cursor.fg % 8);
-	} else {
-		cursor.fg = (Color) ((cursor.fg % 8) + 8); // change anything to the bright colors
-	}
-	cursor.bold = bold;
+	cursor.inverse = ena;
 }
 
 //endregion
@@ -538,12 +644,26 @@ bool ICACHE_FLASH_ATTR screen_isCoordValid(int y, int x)
 	return x >= 0 && y >= 0 && x < W && y < H;
 }
 
+
+void ICACHE_FLASH_ATTR screen_set_charset_n(int Gx)
+{
+	if (Gx < 0 || Gx > 1) return; // bad n
+	cursor.charsetN = Gx;
+}
+
+void ICACHE_FLASH_ATTR screen_set_charset(int Gx, char charset)
+{
+	if (Gx == 0) cursor.charset0 = charset;
+	if (Gx == 1) cursor.charset1 = charset;
+}
+
 /**
  * Set a character in the cursor color, move to right with wrap.
  */
 void ICACHE_FLASH_ATTR
 screen_putchar(const char *ch)
 {
+	char buf[4];
 	NOTIFY_LOCK();
 
 	Cell *c = &screen[cursor.x + cursor.y * W];
@@ -555,7 +675,7 @@ screen_putchar(const char *ch)
 			goto done;
 
 		case '\n':
-			screen_cursor_move(1, 0);
+			screen_cursor_move(1, 0, true); // can scroll
 			goto done;
 
 		case 8: // BS
@@ -568,15 +688,11 @@ screen_putchar(const char *ch)
 					cursor.y--;
 				}
 			}
-			// erase target cell
-			c = &screen[cursor.x + cursor.y * W];
-			c->c[0] = ' ';
-			c->c[1] = 0;
-			c->c[2] = 0;
-			c->c[3] = 0;
+			// apparently backspace should not clear the cell
 			goto done;
 
 		case 9: // TAB
+			// TODO change if tab setting is ever implemented
 			if (cursor.x<((W-1)-(W-1)%4)) {
 				c->c[0] = ' ';
 				c->c[1] = 0;
@@ -591,13 +707,19 @@ screen_putchar(const char *ch)
 		default:
 			if (ch[0] < ' ') {
 				// Discard
-				warn("Ignoring control char %d", (int)ch);
+				warn("Ignoring control char %d", (int)ch[0]);
 				goto done;
 			}
 	}
 
+	if (ch[1] == 0 && ch[0] <= 0x7f) {
+		// we have len=1 and ASCII
+		utf8_remap(c->c, ch[0], (cursor.charsetN == 0) ? cursor.charset0 : cursor.charset1);
+	}
+	else {
 		// copy unicode char
 		strncpy(c->c, ch, 4);
+	}
 
 	if (cursor.inverse) {
 		c->fg = cursor.bg;
@@ -606,7 +728,7 @@ screen_putchar(const char *ch)
 		c->fg = cursor.fg;
 		c->bg = cursor.bg;
 	}
-	c->bold = cursor.bold;
+	c->attrs = cursor.attrs;
 
 	cursor.x++;
 	// X wrap
@@ -629,6 +751,84 @@ done:
 	NOTIFY_DONE();
 }
 
+/**
+ * translates VT100 ACS escape codes to Unicode values.
+ * Based on rxvt-unicode screen.C table.
+ */
+static const u16 vt100_to_unicode[62] =
+{
+// ?       ?       ?       ?       ?       ?       ?
+// A=UPARR B=DNARR C=RTARR D=LFARR E=FLBLK F=3/4BL G=SNOMN
+	0x2191, 0x2193, 0x2192, 0x2190, 0x2588, 0x259a, 0x2603,
+// H=      I=      J=      K=      L=      M=      N=
+	0,      0,      0,      0,      0,      0,      0,
+// O=      P=      Q=      R=      S=      T=      U=
+	0,      0,      0,      0,      0,      0,      0,
+// V=      W=      X=      Y=      Z=      [=      \=
+	0,      0,      0,      0,      0,      0,      0,
+// ?       ?       v->0    v->1    v->2    v->3    v->4
+// ]=      ^=      _=SPC   `=DIAMN a=HSMED b=HT    c=FF
+	0,      0,      0x0020, 0x25c6, 0x2592, 0x2409, 0x240c,
+// v->5    v->6    v->7    v->8    v->9    v->a    v->b
+// d=CR    e=LF    f=DEGRE g=PLSMN h=NL    i=VT    j=SL-BR
+	0x240d, 0x240a, 0x00b0, 0x00b1, 0x2424, 0x240b, 0x2518,
+// v->c    v->d    v->e    v->f    v->10   v->11   v->12
+// k=SL-TR l=SL-TL m=SL-BL n=SL-+  o=SL-T1 p=SL-T2 q=SL-HZ
+	0x2510, 0x250c, 0x2514, 0x253c, 0x23ba, 0x23bb, 0x2500,
+// v->13   v->14   v->15   v->16   v->17   v->18   v->19
+// r=SL-T4 s=SL-T5 t=SL-VR u=SL-VL v=SL-HU w=Sl-HD x=SL-VT
+	0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c, 0x2502,
+// v->1a   v->1b   b->1c   v->1d   v->1e/a3 v->1f
+// y=LT-EQ z=GT-EQ {=PI    |=NOTEQ }=POUND ~=DOT
+	0x2264, 0x2265, 0x03c0, 0x2260, 0x20a4, 0x00b7
+};
+
+/**
+ * UTF remap
+ * @param out - output char[4]
+ * @param g  - ASCII char
+ * @param table - table name (0, A, B)
+ */
+static void ICACHE_FLASH_ATTR
+utf8_remap(char *out, char g, char table)
+{
+	u16 utf = 0;
+
+	switch (table)
+	{
+		case '0': /* DEC Special Character & Line Drawing Set */
+			if ((g >= 0x41) && (g <= 0x7e) && (vt100_to_unicode[g - 0x41])) {
+				utf = vt100_to_unicode[g - 0x41];
+			}
+			break;
+		case 'A': /* UK, replaces # with GBP */
+			if (g == '#') utf = 0x20a4;
+			break;
+	}
+
+	if (utf > 0x7F) {
+		// formulas taken from: https://gist.github.com/yamamushi/5823402
+		if ((utf >= 0x80) && (utf <= 0x07FF)) {
+			out[0] = (char) ((utf >> 0x06) ^ 0xC0);
+			out[1] = (char) (((utf ^ 0xFFC0) | 0x80) & ~0x40);
+			out[2]=0;
+		}
+		else if ((utf >= 0x0800) && (utf <= 0xFFFF)) {
+			out[0] = (char) (((utf ^ 0xFC0FFF) >> 0x0C) | 0xE0);
+			out[1] = (char) ((((utf ^ 0xFFF03F) >> 0x06) | 0x80) & ~0x40);
+			out[2] = (char) (((utf ^ 0xFFFC0) | 0x80) & ~0x40);
+			out[3]=0;
+		} else {
+			out[0] = g;
+			out[1] = 0;
+		}
+	} else {
+		out[0] = g;
+		out[1] = 0;
+	}
+}
+
+
 
 //region Serialization
 
@@ -670,7 +870,7 @@ void screen_dd(void)
 struct ScreenSerializeState {
 	Color lastFg;
 	Color lastBg;
-	bool lastBold;
+	bool lastAttrs;
 	char lastChar[4];
 	int index;
 };
@@ -679,8 +879,24 @@ void ICACHE_FLASH_ATTR
 encode2B(u16 number, WordB2 *stru)
 {
 	stru->lsb = (u8) (number % 127);
-	stru->msb = (u8) ((number - stru->lsb) / 127 + 1);
+	number = (u16) ((number - stru->lsb) / 127);
 	stru->lsb += 1;
+
+	stru->msb = (u8) (number + 1);
+}
+
+void ICACHE_FLASH_ATTR
+encode3B(u32 number, WordB3 *stru)
+{
+	stru->lsb = (u8) (number % 127);
+	number = (number - stru->lsb) / 127;
+	stru->lsb += 1;
+
+	stru->msb = (u8) (number % 127);
+	number = (number - stru->msb) / 127;
+	stru->msb += 1;
+
+	stru->xsb = (u8) (number + 1);
 }
 
 /**
@@ -726,6 +942,7 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
 
 	Cell *cell, *cell0;
 	WordB2 w1, w2, w3, w4, w5;
+	WordB3 lw1;
 
 	size_t remain = buf_len; int used = 0;
 	char *bb = buffer;
@@ -741,7 +958,7 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
 		ss->index = 0;
 		ss->lastBg = 0;
 		ss->lastFg = 0;
-		ss->lastBold = false;
+		ss->lastAttrs = 0;
 		memset(ss->lastChar, 0, 4); // this ensures the first char is never "repeat"
 
 		encode2B((u16) H, &w1);
@@ -751,8 +968,7 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
 		encode2B((u16) (
 			cursor.fg |
 			(cursor.bg<<4) |
-			(cursor.bold?0x100:0) |
-			(cursor.visible?0x200:0))
+			(cursor.visible ? 1<<8 : 0))
 			, &w5);
 
 		// H W X Y Attribs
@@ -768,7 +984,7 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
 		while (i < W*H
 		       && cell->fg == ss->lastFg
 		       && cell->bg == ss->lastBg
-		       && cell->bold == ss->lastBold
+		       && cell->attrs == ss->lastAttrs
 		       && strneq(cell->c, ss->lastChar, 4)) {
 			// Repeat
 			repCnt++;
@@ -777,13 +993,25 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
 
 		if (repCnt == 0) {
 			// No repeat
-			if (cell0->bold != ss->lastBold || cell0->fg != ss->lastFg || cell0->bg != ss->lastBg) {
-				encode2B((u16) (
+			bool changeAttrs = cell0->attrs != ss->lastAttrs;
+			bool changeColors = (cell0->fg != ss->lastFg || cell0->bg != ss->lastBg);
+			if (!changeAttrs && changeColors) {
+				encode2B(cell0->fg | (cell0->bg<<4), &w1);
+				bufprint("\x03%c%c", w1.lsb, w1.msb);
+			}
+			else if (changeAttrs && !changeColors) {
+				// attrs only
+				encode2B(cell0->attrs, &w1);
+				bufprint("\x04%c%c", w1.lsb, w1.msb);
+			}
+			else if (changeAttrs && changeColors) {
+				// colors and attrs
+				encode3B((u32) (
 							 cell0->fg |
 							 (cell0->bg<<4) |
-							 (cell0->bold?0x100:0))
-					, &w1);
-				bufprint("\x01%c%c", w1.lsb, w1.msb);
+							 (cell0->attrs<<8))
+					, &lw1);
+				bufprint("\x01%c%c%c", lw1.lsb, lw1.msb, lw1.xsb);
 			}
 
 			// copy the symbol, until first 0 or reached 4 bytes
@@ -795,7 +1023,7 @@ screenSerializeToBuffer(char *buffer, size_t buf_len, void **data)
 
 			ss->lastFg = cell0->fg;
 			ss->lastBg = cell0->bg;
-			ss->lastBold = cell0->bold;
+			ss->lastAttrs = cell0->attrs;
 			memcpy(ss->lastChar, cell0->c, 4);
 
 			i++;

user/screen.h

@@ -46,6 +46,14 @@ typedef enum {
 	CHANGE_LABELS,
 } ScreenNotifyChangeTopic;
 
+#define ATTR_BOLD (1<<0)
+#define ATTR_FAINT (1<<1)
+#define ATTR_ITALIC (1<<2)
+#define ATTR_UNDERLINE (1<<3)
+#define ATTR_BLINK (1<<4)
+#define ATTR_FRAKTUR (1<<5)
+#define ATTR_STRIKE (1<<6)
+
 #define SCREEN_NOTIFY_DELAY_MS 20
 
 typedef struct {
@@ -70,6 +78,7 @@ extern TerminalConfigBundle termconf_scratch;
 
 void terminal_restore_defaults(void);
 void terminal_apply_settings(void);
+void terminal_apply_settings_noclear(void); // the same, but with no screen reset / init
 
 /**
  * Maximum screen size (determines size of the static data array)
@@ -89,21 +98,24 @@ httpd_cgi_state screenSerializeToBuffer(char *buffer, size_t buf_len, void **dat
 
 void screenSerializeLabelsToBuffer(char *buffer, size_t buf_len);
 
-
 typedef struct {
 	u8 lsb;
 	u8 msb;
 } WordB2;
 
+typedef struct {
+	u8 lsb;
+	u8 msb;
+	u8 xsb;
+} WordB3;
+
 /** Encode number to two nice ASCII bytes */
 void encode2B(u16 number, WordB2 *stru);
 
 /** Init the screen */
 void screen_init(void);
-
 /** Change the screen size */
 void screen_resize(int rows, int cols);
-
 /** Check if coord is valid */
 bool screen_isCoordValid(int y, int x);
 
@@ -111,48 +123,45 @@ bool screen_isCoordValid(int y, int x);
 
 /** Screen reset to default state */
 void screen_reset(void);
-
-/** Clear entire screen, set all to 7 on 0 */
+/** Clear entire screen */
 void screen_clear(ClearMode mode);
-
-/** Line reset to gray-on-white, empty */
+/** Clear line */
 void screen_clear_line(ClearMode mode);
-
+/** Clear part of line */
+void screen_clear_in_line(unsigned int count);
 /** Shift screen upwards */
 void screen_scroll_up(unsigned int lines);
-
 /** Shift screen downwards */
 void screen_scroll_down(unsigned int lines);
+/** esc # 8 - fill entire screen with E of default colors (DEC alignment display) */
+void screen_fill_with_E(void);
+
+// --- insert / delete ---
+void screen_insert_lines(unsigned int lines);
+void screen_delete_lines(unsigned int lines);
+void screen_insert_characters(unsigned int count);
+void screen_delete_characters(unsigned int count);
 
 // --- Cursor control ---
 
 /** Set cursor position */
 void screen_cursor_set(int y, int x);
-
 /** Read cursor pos to given vars */
 void screen_cursor_get(int *y, int *x);
-
 /** Set cursor X position */
 void screen_cursor_set_x(int x);
-
 /** Set cursor Y position */
 void screen_cursor_set_y(int y);
-
 /** Reset cursor attribs */
 void screen_reset_cursor(void);
-
 /** Relative cursor move */
-void screen_cursor_move(int dy, int dx);
-
+void screen_cursor_move(int dy, int dx, bool scroll);
 /** Save the cursor pos */
 void screen_cursor_save(bool withAttrs);
-
 /** Restore the cursor pos */
 void screen_cursor_restore(bool withAttrs);
-
 /** Enable cursor display */
 void screen_cursor_enable(bool enable);
-
 /** Enable auto wrap */
 void screen_wrap_enable(bool enable);
 
@@ -160,19 +169,16 @@ void screen_wrap_enable(bool enable);
 
 /** Set cursor foreground color */
 void screen_set_fg(Color color);
-
 /** Set cursor background coloor */
 void screen_set_bg(Color color);
 
-/** make foreground bright */
-void screen_set_bold(bool bold);
-
-/** Set cursor foreground and background color */
-void screen_set_colors(Color fg, Color bg);
-
-/** Invert colors */
-void screen_inverse(bool inverse);
+// enable or disable attrs by bitmask
+void screen_attr_enable(u8 attrs);
+void screen_attr_disable(u8 attrs);
+void screen_inverse_enable(bool ena);
 
+void screen_set_charset_n(int Gx);
+void screen_set_charset(int Gx, char charset);
 
 /**
  * Set a character in the cursor color, move to right with wrap.

user/user_main.h

@@ -1,7 +1,7 @@
 #ifndef USER_MAIN_H_H
 #define USER_MAIN_H_H
 
-#define FIRMWARE_VERSION "0.6.2+" GIT_HASH
+#define FIRMWARE_VERSION "0.6.6+" GIT_HASH
 #define TERMINAL_GITHUB_REPO "https://github.com/MightyPork/esp-vt100-firmware"
 
 #endif //USER_MAIN_H_H