coa: repair --disable and --enable opts

Author: deepsweet

lib/svgo/coa.js

@@ -123,6 +123,16 @@ module.exports = require('coa').Cmd()
 
         }
 
+        // --disable
+        if (opts.disable) {
+            config = changePluginsState(opts.disable, false, config);
+        }
+
+        // --enable
+        if (opts.enable) {
+            config = changePluginsState(opts.enable, true, config);
+        }
+
         // --pretty
         if (opts.pretty) {
 
@@ -139,7 +149,7 @@ module.exports = require('coa').Cmd()
             return;
         }
 
-        // --inpput
+        // --input
         if (input) {
 
             // STDIN
@@ -249,6 +259,81 @@ function printProfitInfo(inBytes, outBytes) {
 
 }
 
+/**
+ * Change plugins state by names array.
+ *
+ * @param {Array} names plugins names
+ * @param {Boolean} state active state
+ * @param {Object} config original config
+ * @return {Object} changed config
+ */
+function changePluginsState(names, state, config) {
+
+    // extend config
+    if (config && config.plugins) {
+
+        names.forEach(function(name) {
+
+            var matched,
+                key;
+
+            config.plugins.forEach(function(plugin) {
+
+                // get plugin name
+                if (typeof plugin === 'object') {
+                    key = Object.keys(plugin)[0];
+                } else {
+                    key = plugin;
+                }
+
+                // if there are such plugin name
+                if (key === name) {
+                    // do not replace plugin's params with true
+                    if (typeof plugin[key] !== 'object' || !state) {
+                        plugin[key] = state;
+                    }
+
+                    // mark it as matched
+                    matched = true;
+                }
+
+            });
+
+            // if not matched and current config is not full
+            if (!matched && !config.full) {
+
+                var obj = {};
+
+                obj[name] = state;
+
+                // push new plugin Object
+                config.plugins.push(obj);
+
+                matched = true;
+
+            }
+
+        });
+
+    // just push
+    } else {
+
+        config = { plugins: [] };
+
+        names.forEach(function(name) {
+            var obj = {};
+
+            obj[name] = state;
+
+            config.plugins.push(obj);
+        });
+
+    }
+
+    return config;
+
+}
+
 function optimizeFolder(path, config) {
 
     var svgo = new SVGO(config);