Add option to indent when pretty printing svg

lib/svgo/coa.js

@@ -106,6 +106,13 @@ module.exports = require('coa').Cmd()
         .long('pretty')
         .flag()
         .end()
+    .opt()
+        .name('indent').title('Indent number when pretty printing SVGs')
+        .long('indent')
+        .val(function(val) {
+            return !isNaN(val) ? val : this.reject("Option '--indent' must be an integer number");
+        })
+        .end()
     .opt()
         .name('quiet').title('Only output error messages, not regular status messages')
         .short('q').long('quiet')
@@ -216,6 +223,7 @@ module.exports = require('coa').Cmd()
 
             config.js2svg = config.js2svg || {};
             config.js2svg.pretty = true;
+            config.js2svg.indent = parseInt(opts.indent, 10);
 
         }
 

lib/svgo/js2svg.js

@@ -22,7 +22,7 @@ var defaults = {
     cdataEnd: ']]>',
     textStart: '',
     textEnd: '',
-    indent: '    ',
+    indent: 4,
     regEntities: /[&'"<>]/g,
     regValEntities: /[&"<>]/g,
     encodeEntity: encodeEntity,
@@ -60,6 +60,10 @@ function JS2SVG(config) {
         this.config = defaults;
     }
 
+    if (this.config.indent && !isNaN(this.config.indent)) {
+        this.config.indent = new Array(this.config.indent + 1).join(' ');
+    }
+
     if (this.config.pretty) {
         this.config.doctypeEnd += '\n';
         this.config.procInstEnd += '\n';

test/mocha.opts

@@ -4,3 +4,4 @@ test/config
 test/svg2js
 test/plugins
 test/jsapi
+test/svgo

test/svgo/_index.js

@@ -0,0 +1,40 @@
+'use strict';
+
+var FS = require('fs'),
+    PATH = require('path'),
+    SVGO = require(process.env.COVERAGE ?
+                   '../../lib-cov/svgo':
+                   '../../lib/svgo');
+
+describe('indentation', function() {
+
+    it('should create indent with 2 spaces', function(done) {
+
+        var filepath = PATH.resolve(__dirname, './test.svg'),
+            svgo;
+
+        FS.readFile(filepath, 'utf8', function(err, data) {
+            if (err) {
+                throw err;
+            }
+
+            var splitted = data.trim().split(/\s*@@@\s*/),
+                orig     = splitted[0],
+                should   = splitted[1];
+
+            svgo = new SVGO({
+                full    : true,
+                plugins : [],
+                js2svg  : { pretty: true, indent: 2 }
+            });
+
+            svgo.optimize(orig, function(result) {
+                ( result.data.trim() ).should.be.equal(should);
+                done();
+            });
+
+        });
+
+    });
+
+});