Add options for using html-differ as a program

Author: eGavr

lib/cli.js

@@ -2,7 +2,8 @@ var path = require('path'),
     vow = require('vow'),
     vfs = require('vow-fs'),
     HtmlDiffer = require('./index').HtmlDiffer,
-    diffLogger = require('./diff-logger');
+    diffLogger = require('./diff-logger'),
+    utils = require('./utils');
 
 module.exports = require('coa').Cmd()
     .name(process.argv[1])
@@ -26,6 +27,14 @@ module.exports = require('coa').Cmd()
         .title('Path to configuration JSON-file')
         .long('config')
         .end()
+    .opt()
+        .name('charsAroundDiff')
+        .title('Number of characters around diff')
+        .long('chars-around-diff')
+        .val(function(val) {
+            return parseInt(val);
+        })
+        .end()
     .arg()
         .name('path1')
         .title('Path to the 1-st html-file')
@@ -44,11 +53,13 @@ module.exports = require('coa').Cmd()
             ]).spread(function (html1, html2, config) {
                 config = config ? JSON.parse(config) : {};
 
-                var diffOpts = { ignoreHtmlAttrs: config.ignoreHtmlAttrs || [], compareHtmlAttrsAsJSON: config.compareHtmlAttrsAsJSON },
-                    logOpts = { showCharacters: config.showCharacters || 20 };
+                var options = utils.defaults(config),
+                    loggerOptions = {
+                        charsAroundDiff: opts.charsAroundDiff || 20
+                    };
 
-                htmlDiffer = new HtmlDiffer(diffOpts),
-                diffLogger.log(htmlDiffer.diffHtml(html1, html2), logOpts);
+                htmlDiffer = new HtmlDiffer(options),
+                diffLogger.log(htmlDiffer.diffHtml(html1, html2), loggerOptions);
             });
     })
     .run(process.argv.slice(2));