fix(rule): support textlint 8.2.0 (#15)

BREAKING CHANGE: https://github.com/prh/prh/blob/master/CHANGELOG.md#300-2017-05-06
prh use `/regexp/u` by default.
Always add `u` flag

Author: azu

src/prh-rule.js renamed to src/textlint-rule-prh.js

@@ -1,6 +1,7 @@
 // LICENSE : MIT
 "use strict";
-import {RuleHelper} from "textlint-rule-helper";
+import { RuleHelper } from "textlint-rule-helper";
+
 const prh = require("prh");
 const path = require("path");
 const untildify = require('untildify');
@@ -90,11 +91,20 @@ const forEachChange = (changeSet, str, onChangeOfMatch) => {
         delta += result.length - diff.matches[0].length;
     });
 };
+const getConfigBaseDir = (context) => {
+    if (typeof context.getConfigBaseDir === "function") {
+        return context.getConfigBaseDir();
+    }
+    // Old fallback that use deprecated `config` value
+    // https://github.com/textlint/textlint/issues/294
+    const textlintRcFilePath = context.config ? context.config.configFile : null;
+    // .textlinrc directory
+    return textlintRcFilePath ? path.dirname(textlintRcFilePath) : process.cwd();
+};
 function reporter(context, options = {}) {
     assertOptions(options);
-    const textlintRcFilePath = context.config ? context.config.configFile : null;
     // .textlinrc directory
-    const textlintRCDir = textlintRcFilePath ? path.dirname(textlintRcFilePath) : process.cwd();
+    const textlintRCDir = getConfigBaseDir(context);
     // create prh config
     const rulePaths = options.rulePaths || [];
     const ruleContents = options.ruleContents || [];
@@ -103,7 +113,7 @@ function reporter(context, options = {}) {
     const prhEngineFiles = createPrhEngine(rulePaths, textlintRCDir);
     const prhEngine = mergePrh(prhEngineFiles, prhEngineContent);
     const helper = new RuleHelper(context);
-    const {Syntax, getSource, report, fixer, RuleError} = context;
+    const { Syntax, getSource, report, fixer, RuleError } = context;
     return {
         [Syntax.Str](node){
             if (helper.isChildNode(node, [Syntax.Link, Syntax.Image, Syntax.BlockQuote, Syntax.Emphasis])) {
@@ -112,7 +122,7 @@ function reporter(context, options = {}) {
             const text = getSource(node);
             // to get position from index
             const makeChangeSet = prhEngine.makeChangeSet(null, text);
-            forEachChange(makeChangeSet, text, ({matchStartIndex, matchEndIndex, actual, expected}) => {
+            forEachChange(makeChangeSet, text, ({ matchStartIndex, matchEndIndex, actual, expected }) => {
                 // If result is not changed, should not report
                 if (actual === expected) {
                     return;

test/prh-rule-test.js

@@ -2,7 +2,7 @@
 "use strict";
 import assert from "power-assert";
 import {textlint} from "textlint";
-import rule from "../src/prh-rule";
+import rule from "../src/textlint-rule-prh";
 describe("prh-rule-test", function () {
     beforeEach(function () {
         textlint.setupRules({

test/prh-rule-tester-test.js

@@ -3,7 +3,7 @@
 var TextLintTester = require("textlint-tester");
 var tester = new TextLintTester();
 // rule
-import rule from "../src/prh-rule";
+import rule from "../src/textlint-rule-prh";
 // ruleName, rule, { valid, invalid }
 tester.run("prh", rule, {
     valid: [

test/textlintrc-test.js

@@ -2,27 +2,26 @@
 "use strict";
 import assert from "power-assert";
 import fs from "fs";
-import {TextLintCore} from "textlint";
-import rule from "../src/prh-rule";
+import { TextLintEngine, TextLintCore } from "textlint";
+import rule from "../src/textlint-rule-prh";
 import path from "path";
-describe(".textlinrc test", function () {
-    context("when use .textlintrc", function () {
-        it("should resolve path to rule.yaml", function () {
-            var textlint = new TextLintCore();
-            textlint.setupRules({
-                "prh": rule
-            }, {
-                "prh": {
-                    "rulePaths": [path.join(__dirname, "fixtures", "rule.yaml"), path.join(__dirname, "fixtures", "imports.yml")]
-                }
+
+describe(".textlinrc test", function() {
+    context("when use .textlintrc", function() {
+        it("should resolve path to rule.yaml", function() {
+            const engine = new TextLintEngine({
+                configFile: path.join(__dirname, "fixtures/.textlintrc"),
+                rulesBaseDirectory: path.join(__dirname, "../src")
             });
-            return textlint.lintMarkdown("jquery").then(result => {
+            return engine.executeOnText("jquery").then(([result]) => {
                 assert(result.messages.length === 1);
                 assert(result.messages[0].line === 1);
                 assert(result.messages[0].column === 1);
             });
         });
-        it("should resolve path to rule.yaml", function () {
+    });
+    context("options", () => {
+        it("should resolve path to rule.yaml", function() {
             var textlint = new TextLintCore();
             textlint.setupRules({
                 "prh": rule
@@ -37,7 +36,7 @@ describe(".textlinrc test", function () {
                 assert(result.messages[0].column === 1);
             });
         });
-        it("should resolve yaml content", function () {
+        it("should resolve yaml content", function() {
             var textlint = new TextLintCore();
             var content = fs.readFileSync(path.join(__dirname, "fixtures", "rule.yaml"), "utf-8");
             textlint.setupRules({
@@ -53,7 +52,7 @@ describe(".textlinrc test", function () {
                 assert(result.messages[0].column === 1);
             });
         });
-        it("should resolve yaml file and content", function () {
+        it("should resolve yaml file and content", function() {
             var textlint = new TextLintCore();
             var content = fs.readFileSync(path.join(__dirname, "fixtures", "rule.yaml"), "utf-8");
             textlint.setupRules({
@@ -74,11 +73,11 @@ describe(".textlinrc test", function () {
                 assert(result.messages[1].column === 8);
             });
         });
-
     });
-    context("prh features", function () {
-        describe("import", function () {
-            it("should work import directive", function () {
+
+    context("prh features", function() {
+        describe("import", function() {
+            it("should work import directive", function() {
                 var textlint = new TextLintCore();
                 textlint.setupRules({
                     "prh": rule