Add readme tag support

CHANGELOG.md

@@ -1,4 +1,7 @@
 # Changelog
+## 0.1.12 Released on 2018-05-19.
+
+* Added support for readme tags.
 
 ## 0.1.11 Released on 2018-05-14
 

README.md

@@ -23,6 +23,10 @@ Options:
   -j, --inJson       A boolean flag indicating whether output format of the
                      messages is json.                 [boolean] [default: true]
   -h, --help         Show help                                         [boolean]
+  -o, --oldTagName   The tag name for the old specification file.  If include it 
+                     indicates that the old spec file is a readme file
+  -n, --newTagName   The tag name for the new specification file.  If include it 
+                     indicates that the new spec file is a readme file
 ```
 
 ## Build dependencies

index.js

@@ -9,6 +9,7 @@ var utils = require('./lib/util/utils');
 // Easy to use methods from validate.js
 exports.log = require('./lib/util/logging');
 exports.compare = validate.compare;
+exports.compareTags = validate.compareTags;
 
 // Classes
 exports.OpenApiDiff = require('./lib/validators/openApiDiff');

lib/commands/oad.js

@@ -1,38 +1,67 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License. See License.txt in the project root for license information.
 
-'use strict';
-const log = require('../util/logging'),
-  validate = require('../validate');
+"use strict";
+const log = require("../util/logging"),
+  validate = require("../validate");
 
-exports.command = 'compare <old-spec> <new-spec>';
+exports.command = "compare <old-spec> <new-spec>";
 
-exports.describe = 'Compares old and new open api specification for breaking changes.';
+exports.describe =
+  "Compares old and new open api specification for breaking changes.";
 
 exports.builder = {
   j: {
-    alias: 'inJson',
-    describe: 'A boolean flag indicating whether output format of the messages is json.',
+    alias: "inJson",
+    describe:
+      "A boolean flag indicating whether output format of the messages is json.",
     boolean: true,
     default: true
+  },
+  o: {
+    alias: "oldTagName",
+    describe:
+      "The tag name for the old specification file.  If included it indicates that the old spec file is a readme file"
+  },
+  n: {
+    alias: "newTagName",
+    describe:
+      "The tag name for the new specification file.  If included it indicates that the new spec file is a readme file"
   }
 };
 
-exports.handler = function (argv) {
+exports.handler = function(argv) {
   log.debug(argv);
   let oldSpec = argv.oldSpec;
+  let oldTag = argv.o;
   let newSpec = argv.newSpec;
+  let newTag = argv.n;
   let vOptions = {};
   vOptions.consoleLogLevel = argv.logLevel;
   vOptions.logFilepath = argv.f;
   vOptions.json = argv.j;
 
-  return validate.compare(oldSpec, newSpec, vOptions).then((result) => {
-    console.log(result);
-  }).catch(err => {
-    console.log(err);
-    process.exitCode = 1;
-  });
-}
+  let compareFunc;
+  if (oldTag && newTag) {
+    compareFunc = validate.compareTags(
+      oldSpec,
+      oldTag,
+      newSpec,
+      newTag,
+      vOptions
+    );
+  } else {
+    compareFunc = validate.compare(oldSpec, newSpec, vOptions);
+  }
+
+  return compareFunc
+    .then(result => {
+      console.log(result);
+    })
+    .catch(err => {
+      console.log(err);
+      process.exitCode = 1;
+    });
+};
 
 exports = module.exports;

lib/validate.js

@@ -22,7 +22,7 @@ exports = module.exports;
  * @param {boolean} [options.matchApiVersion] A boolean flag indicating whether to consider api-version while comparing.
  * 
  */
-exports.compare = function compare(oldSwagger, newSwagger, options) {
+exports.compare = function (oldSwagger, newSwagger, options) {
   if (!options) options = {};
 
   log.consoleLogLevel = options.consoleLogLevel || log.consoleLogLevel;
@@ -31,3 +31,31 @@ exports.compare = function compare(oldSwagger, newSwagger, options) {
 
   return openApiDiff.compare(oldSwagger, newSwagger);
 };
+
+/**
+ * Wrapper method to compares old and new specifications.
+ *
+ * @param {string} oldSwagger Path to the old specification file.
+ *
+ * @param {string} oldTag Tag name used for autorest with the old specification file.
+ *
+ * @param {string} newSwagger Path to the new specification file.
+ *
+ * @param {string} newTagName Tag name used for autorest with the new specification file.
+ * 
+ * @param {object} options The configuration options.
+ *
+ * @param {boolean} [options.json] A boolean flag indicating whether output format of the messages is json.
+ * 
+ * @param {boolean} [options.matchApiVersion] A boolean flag indicating whether to consider api-version while comparing.
+ * 
+ */
+exports.compareTags = function (oldSwagger, oldTag, newSwagger, newTag, options) {
+  if (!options) options = {};
+
+  log.consoleLogLevel = options.consoleLogLevel || log.consoleLogLevel;
+  log.filepath = options.logFilepath || log.filepath;
+  let openApiDiff = new OpenApiDiff(options);
+
+  return openApiDiff.compare(oldSwagger, newSwagger, oldTag, newTag);
+};

lib/validators/openApiDiff.js

@@ -51,13 +51,17 @@ class OpenApiDiff {
    *
    * @param {string} newSwagger Path to the new specification file.
    *
+   * @param {string} oldTag Tag name used for autorest with the old specification file.
+   *
+   * @param {string} newTag Tag name used for autorest with the new specification file.
+   *
    */
-  compare(oldSwagger, newSwagger) {
+  compare(oldSwagger, newSwagger, oldTag, newTag) {
     log.silly(`compare is being called`);
 
     let self = this;
-    var promise1 = self.processViaAutoRest(oldSwagger, 'old');
-    var promise2 = self.processViaAutoRest(newSwagger, 'new');
+    var promise1 = self.processViaAutoRest(oldSwagger, 'old', oldTag);
+    var promise2 = self.processViaAutoRest(newSwagger, 'new', newTag);
 
     return Promise.all([promise1, promise2]).then(results => {
       return self.processViaOpenApiDiff(results[0], results[1]);
@@ -118,8 +122,10 @@ class OpenApiDiff {
    *
    * @param {string} outputFileName Name of the output file to which autorest outputs swagger-doc.
    *
+   * @param {string} tagName Name of the tag in the specification file.
+   *
    */
-  processViaAutoRest(swaggerPath, outputFileName) {
+  processViaAutoRest(swaggerPath, outputFileName, tagName) {
     log.silly(`processViaAutoRest is being called`);
 
     let self = this;
@@ -141,7 +147,9 @@ class OpenApiDiff {
 
       let outputFolder = os.tmpdir();
       let outputFilePath = path.join(outputFolder, `${outputFileName}.json`);
-      let autoRestCmd = `${self.autoRestPath()} --input-file=${swaggerPath} --output-artifact=swagger-document.json --output-file=${outputFileName} --output-folder=${outputFolder}`;
+      var autoRestCmd = tagName 
+        ? `${self.autoRestPath()} ${swaggerPath} --tag=${tagName} --output-artifact=swagger-document.json --output-file=${outputFileName} --output-folder=${outputFolder}`
+        : `${self.autoRestPath()} --input-file=${swaggerPath} --output-artifact=swagger-document.json --output-file=${outputFileName} --output-folder=${outputFolder}`;
 
       log.debug(`Executing: "${autoRestCmd}"`);
 

openapi-diff/src/modeler/AutoRest.Swagger/Model/ServiceDefinition.cs

@@ -124,7 +124,8 @@ public override IEnumerable<ComparisonMessage> Compare(ComparisonContext context
             if (previousDefinition == null)
                 throw new ArgumentException("Comparing a service definition with something else.");
 
-            if (Info != null && previousDefinition.Info != null)
+            if (Info?.Version != null && 
+                previousDefinition.Info?.Version != null)
             {
                 context.PushProperty("info");
                 context.PushProperty("version");

package.json

@@ -1,6 +1,6 @@
 {
   "name": "oad",
-  "version": "0.1.11",
+  "version": "0.1.12",
   "author": {
     "name": "Microsoft Corporation",
     "email": "azsdkteam@microsoft.com",