From ccbb4fa408be56e882ce4fc5b38e4af24fae1bb2 Mon Sep 17 00:00:00 2001
From: Lisa Milne <lisamilne618@gmail.com>
Date: Sun, 26 Nov 2023 19:54:37 +1000
Subject: [PATCH] shell history and tabfill

---
 clite/core.js  |   7 +--
 clite/shell.js | 115 +++++++++++++++++++++++++++++++++++++++----------
 2 files changed, 97 insertions(+), 25 deletions(-)

diff --git a/clite/core.js b/clite/core.js
index fb1b075..ac9d957 100644
--- a/clite/core.js
+++ b/clite/core.js
@@ -1,6 +1,6 @@
 var clite = {
 	state:{
-		version:'0.2-1',
+		version:'0.2-2',
 		isinit:false
 	},
 	core:{
@@ -1331,13 +1331,14 @@ clite.term = {
 				return clite.term.tty.data.data.onkeypress(e);
 			if (e.key.length > 1 && e.key != 'Spacebar' && clite.term.data.handler != null) {
 				if (e.key == 'Enter') {
+					clite.term.data.buff = '';
 					clite.term.data.handler(e.target.value);
-					clite.term.buff = '';
+					return false;
 				}else{
 					clite.term.data.handler('\1'+e.key);
 				}
 			}
-			clite.term.buff = e.target.value;
+			clite.term.data.buff = e.target.value;
 			return false;
 		},
 		refocus:function(e) {
diff --git a/clite/shell.js b/clite/shell.js
index 6767a3e..820c054 100644
--- a/clite/shell.js
+++ b/clite/shell.js
@@ -80,6 +80,44 @@ clite.commands.load('sh',function(args,env,io) {
 		}
 	};
 
+	var history = {
+		data:[],
+		current:'',
+		index:0,
+		add:function(txt) {
+			if (txt.length < 1)
+				return;
+			if (history.data.length > 0 && history.data[history.data.length-1] == txt)
+				return;
+			history.data.push(txt);
+			history.index = history.data.length;
+		},
+		up:function() {
+			if (history.index == 0)
+				return;
+			history.index--;
+			term.ttyctrl('iset',history.getCurrent());
+		},
+		down:function() {
+			if (history.index == history.data.length)
+				return;
+			history.index++;
+			term.ttyctrl('iset',history.getCurrent());
+		},
+		setCurrent:function(txt) {
+			history.current = txt;
+		},
+		getCurrent:function() {
+			if (history.index == history.data.length)
+				return history.current;
+			return history.data[history.index];
+		},
+		resetCurrent:function() {
+			history.current = '';
+			history.index = history.data.length;
+		}
+	}
+
 	function active_exit(pid,v) {
 		if (pid != active_pid)
 			return;
@@ -157,6 +195,45 @@ clite.commands.load('sh',function(args,env,io) {
 		return pptxt;
 	}
 
+	function tabfill() {
+		var c = term.ttyctrl('iget');
+		var parts = stdlib.strToArgs(c);
+		var ai = parts.length-1;
+		if (ai < 0)
+			return;
+		var a = parts[ai];
+		var add = '';
+		if (ai == 0) {
+			// test for shell macros/builtins
+			Object.keys(macro).forEach(function(key) {
+				if (add == '' && key.substring(0,a.length) == a) {
+					add = key.substring(a.length);
+				}
+			});
+			if (add == '') {
+				// test for commands
+				var pparts = env.PATH.split(':');
+				pparts.forEach(function(pp) {
+					if (add != '')
+						return;
+					var fd = stdio.open('/bin',false);
+					var f;
+					while (add == '' && (f = stdio.read(fd)) != null) {
+						if (f.substring(0,a.length) == a) {
+							add = f.substring(a.length)+' ';
+						}
+					}
+					stdio.close(fd);
+				});
+			}
+		}else{
+			// TODO: path fill
+		}
+		if (add == '')
+			return;
+		term.ttyctrl('iset',c+add);
+	}
+
 	function parseScript(fd) {
 		var l;
 		while ((l = stdio.readLine(fd)) != null) {
@@ -174,8 +251,8 @@ clite.commands.load('sh',function(args,env,io) {
 			}
 			return;
 		}
-		//clite.shell.history.add(txt);
-		//clite.shell.history.resetCurrent();
+		history.add(txt);
+		history.resetCurrent();
 		if (interactive)
 			stdio.write(io.stdout,prompt+txt);
 		// clear the tty prompt
@@ -236,26 +313,20 @@ clite.commands.load('sh',function(args,env,io) {
 	}
 
 	function inputControl(key) {
-			//try {
-				//if (e.key == 'Down' || e.key == 'ArrowDown') {
-					//clite.shell.history.down();
-					//return false;
-				//}
-				//if (e.key == 'Up' || e.key == 'ArrowUp') {
-					//clite.shell.history.up();
-					//return false;
-				//}
-				//if (e.key == 'Tab') {
-					//return false;
-				//}
-				//var t = clite.term.data.field.value;
-				//if (e.key != 'Enter') {
-					//clite.shell.history.setCurrent(t);
-					//return true;
-				//}
-				//clite.shell.run(t);
-				//return false;
-			//} catch(err) {return false;}
+		switch(key) {
+		case 'Tab':
+			tabfill();
+			break;
+		case 'Down':
+		case 'ArrowDown':
+			history.down();
+			break;
+		case 'Up':
+		case 'ArrowUp':
+			history.up();
+			break;
+		default:;
+		}
 	}
 	function input(str) {
 		if (str[0] == '\1') {