beezlib - npm Package Compare versions

Comparing version 0.9.20 to 0.9.21

lib/image/imagemagick.js

@@ -62,2 +62,27 @@ /**
 /**
+ * Get the estimated quality
+ *
+ * @name getDefaultQuality
+ * @memberof imagemagick
+ * @method
+ * @param {String} file target file path
+ * @param {function} callback
+ * @return {Number} quality
+ * @example
+ * beezlib.image.getDefaultQuality('xxx.jpg', function(err, quality) {
+ *   console.log(quality)
+ * });
+ *
+ */
+functions.getDefaultQuality = function (file, callback) {
+    return this.identify(['-verbose', '-format', '%Q', file], function (err, quality) {
+        if (err) {
+            return callback && callback(err);
+        }
+
+        callback && callback(null, parseInt(quality, 10) / 100);
+    });
+};
+
+/**
  * Convert file format beez-ratio
@@ -150,2 +175,3 @@ *
  * var options = {
+ *   quality: 0.8,
  *   srcPath: './test/image/logo.png',
@@ -163,9 +189,25 @@ *   dstPath: './test/image',
     var self = this;
-    this.getSize(options.srcPath, function(err, res) {
+    var srcPath = options.srcPath;
+
+    new Bucks()
+    .waterfall([
+        function (err, res, next) {
+            self.getSize(srcPath, next);
+        },
+        function (err, res, next) {
+            // do not get the default quality if quality option is set
+            if (!!options.quality) {
+                next(null);
+            }
+            self.getDefaultQuality(srcPath, next);
+        }
+    ])
+    .end(function (err, ress) {
         if (err) {
-            return callback && callback(err, res);
+            return callback && callback(err);
         }
 
-        var width = res.width;
-        var height = res.height;
+        var width = ress[0].width;
+        var height = ress[0].height;
+        var quality = ress[1];
 
@@ -183,2 +225,3 @@ // parallel load
                 var resizeOptions = {
+                    quality: options.quality || quality,
                     srcPath: options.srcPath,
@@ -185,0 +228,0 @@ dstPath: dstPath,

package.json

 {
     "name": "beezlib",
-    "version": "0.9.20",
+    "version": "0.9.21",
     "description": "The utility library for Node.js using beez projects.",
@@ -5,0 +5,0 @@ "keywords": [

test/test-image.js

@@ -57,2 +57,11 @@ var fs = require('fs');
 
+    it('getDefaultQuality', function (done) {
+        beezlib.image.imagemagick.getDefaultQuality('test/image/logo.png', function (err, res) {
+            err && should.fail(err);
+            res.should.be.ok;
+            res.should.be.within(0.1, 1.0);
+            done();
+        });
+    });
+
     it('ratioResize', function (done) {
@@ -59,0 +68,0 @@ var baseRatio = 2.0;

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Improved metrics

Total package byte prevSize

432287

increased by1.11%

Lines of code

3554

increased by1.37%

No dependency changes