From 790a796de93c6f9868ce78f4aea9262461e2b8c9 Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Thu, 12 Jan 2017 21:13:44 +0100
Subject: Buffer dirty marking

---
 buffer.cpp  | 10 ++++++++++
 buffer.h    |  2 ++
 manager.cpp |  3 ++-
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/buffer.cpp b/buffer.cpp
index 1366862..b185b99 100644
--- a/buffer.cpp
+++ b/buffer.cpp
@@ -34,6 +34,7 @@ void Buffer::handleCommand(const Command &cmd){
 		cursor.line=0;
 		cursor.x=0;
 		screen.clear();
+		dirty=false;
 		manager->receive({"info","Opened, read "+to_string(nread)+" characters"});
 	} else if(cmd[0]=="save_file"){
 		if(filename.size()==0){
@@ -46,11 +47,13 @@ void Buffer::handleCommand(const Command &cmd){
 			return;
 		}
 		i64 nwritten=tb.write(file);
+		dirty=false;
 		manager->receive({"info","Saved, written "+to_string(nwritten)+" characters"});
 	} else if(cmd[0]=="insert_char"){
 		char c=cmd[1][0];
 		assert(c!='\n');
 		tb.insert(cursor.line,cursor.x,cmd[1][0]);
+		dirty=true;
 		cursor.x++;
 		relayoutScreen();
 		if(findCursorInScreen().x==-1){
@@ -59,6 +62,7 @@ void Buffer::handleCommand(const Command &cmd){
 		}
 	} else if(cmd[0]=="insert_newline"){
 		tb.insert(cursor.line,cursor.x,'\n');
+		dirty=true;
 		cursor.x=0;
 		cursor.line++;
 		relayoutScreen();
@@ -79,6 +83,7 @@ void Buffer::handleCommand(const Command &cmd){
 			cursor.x=tb.lineLen(cursor.line);
 			tb.erase(cursor.line,cursor.x);
 		}
+		dirty=true;
 		relayoutScreen();
 		if(findCursorInScreen().x==-1){
 			scrollUp();
@@ -91,6 +96,7 @@ void Buffer::handleCommand(const Command &cmd){
 			return;
 		}
 		tb.erase(cursor.line,cursor.x);
+		dirty=true;
 		relayoutScreen();
 	} else if(cmd[0]=="move_forward"){
 		if(cursor.line==tb.numLines()-1&&cursor.x==tb.lineLen(cursor.line)){
@@ -476,3 +482,7 @@ string Buffer::getText() const {
 		return tb.fullText();
 	}
 }
+
+bool Buffer::isDirty() const {
+	return dirty;
+}
diff --git a/buffer.h b/buffer.h
index 119097e..b20c885 100644
--- a/buffer.h
+++ b/buffer.h
@@ -36,6 +36,7 @@ class Buffer{
 	const bool singleLineMode=false;
 
 	TextBlob tb;
+	bool dirty=false;
 
 	vector<ScreenLine> screen;
 	i64 lastWidth=-1,lastHeight=-1; //excluding the gutter
@@ -62,4 +63,5 @@ public:
 	void show(i64 atx,i64 aty,i64 width,i64 height);
 
 	string getText() const;
+	bool isDirty() const;
 };
diff --git a/manager.cpp b/manager.cpp
index af8844c..a3e9738 100644
--- a/manager.cpp
+++ b/manager.cpp
@@ -59,7 +59,7 @@ void Manager::show(){
 	string bartext;
 	i64 hilight_start=-1,hilight_len;
 	for(size_t i=0;i<buffers.size();i++){
-		const string &fname=buffers[i].filename.size()==0?"<New file>":buffers[i].filename;
+		string fname=buffers[i].filename.size()==0?"<New file>":buffers[i].filename;
 		string tabtext=" ";
 		for(size_t j=0;j<fname.size();j++){
 			if(fname[j]=='/'){
@@ -82,6 +82,7 @@ void Manager::show(){
 		//+1 because the first char was already appended
 		tabtext+=fname.substr(nameidx+1,string::npos);
 
+		if(buffers[i].isDirty())tabtext+='*';
 		tabtext+=' ';
 
 		if((i64)i==activeIdx){
-- 
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