single-line-log - npm Package Compare versions

Comparing version 0.3.0 to 0.3.1

index.js

 var MOVE_LEFT = new Buffer('1b5b3130303044', 'hex').toString();
 var MOVE_UP = new Buffer('1b5b3141', 'hex').toString();
+var CLEAR_LINE = new Buffer('1b5b304b', 'hex').toString();
 
@@ -19,9 +20,18 @@ var write = process.stdout.write;
 
+var prevLineCount = 0;
 var log = function() {
-	var prev = str || '';
-	var newLines = (str || '').split('\n').length-1;
-	str = Array(newLines+1).join(MOVE_UP);
-	str += MOVE_LEFT+Array.prototype.join.call(arguments, ' ');
-	while (str.length < prev.length) str += ' ';
+	str = '';
+	var nextStr = Array.prototype.join.call(arguments, ' ');
+
+	// Clear screen
+	for (var i=0; i<prevLineCount; i++) {
+		str += MOVE_LEFT + CLEAR_LINE + (i < prevLineCount-1 ? MOVE_UP : '');
+	}
+
+	// Actual log output
+	str += nextStr;
 	process.stdout.write(str);
+
+	// How many lines to remove on next clear screen
+	prevLineCount = nextStr.split('\n').length;
 };
@@ -36,6 +46,11 @@
 
-var count=0;
+var i=0;
 setInterval(function() {
-	if (count === 10000) return;
-	log('#'+(count++));
-}, 50);
+	i++;
+	var s = 'line 1 - '+Math.random();
+	if (i < 10) s += ' - '+Math.random();
+	s += '\nline 2 - '+Math.random();
+	if (i<20) s += '\nline 3 - '+Math.random()+'\nline 4 - '+Math.random();
+
+	log(s);
+}, 200);

package.json

@@ -17,5 +17,5 @@ {
   ],
-  "version": "0.3.0",
+  "version": "0.3.1",
   "repository": "git://github.com/freeall/single-line-log.git",
   "author": "Tobias Baunbæk <[e-mail]>"
 }

README.md

 # single-line-log
 
-Small Node.js module that keeps writing to the same line in the console. Very useful when you write progress bars, or a status message during longer operations.
+Small Node.js module that keeps writing to the same line in the console. Very useful when you write progress bars, or a status message during longer operations. Supports multilines.
 
@@ -24,4 +24,4 @@
 
-	// Keep writing to the same line in the console
-	log('[' + percentage + '%]', read, 'bytes read');
+	// Keep writing to the same two lines in the console
+	log('Writing to super large file\n[' + percentage + '%]', read, 'bytes read');
 });
@@ -38,3 +38,3 @@ ```
 log('Line 1');
-log.clear()
+log.clear();
 log('Line 2');
@@ -41,0 +41,0 @@ ```

No alert changes

Improved metrics

Total package byte prevSize

2555

increased by18.56%

Lines of code

43

increased by34.38%

No dependency changes