Add option to have code references use a universal slash

index.js

@@ -69,8 +69,10 @@ module.exports = function() {
       var fileName = plugin.opts && plugin.opts.fileName || DEFAULT_FILE_NAME;
       var headers = plugin.opts && plugin.opts.headers || DEFAULT_HEADERS;
       var base = plugin.opts && plugin.opts.baseDirectory;
+      var universalSlash = plugin.opts && plugin.opts.universalSlash;
+
       if (base) {
-        base = base.match(/^(.*?)\/*$/)[1] + '/';
+		base = base.match(/^(.*?)[\//]*$/)[1] + path.sep;
       }
 
       if (typeof fileName === 'function') {
@@ -145,6 +147,12 @@ module.exports = function() {
           fn = fn.substr(base.length);
         }
 
+        if (universalSlash === '/') {
+          fn = fn.replace(/\\/g, universalSlash)
+        } else if (universalSlash === '\\') {
+          fn = fn.replace(/\//g, universalSlash)
+        }
+
         translate.comments = {
           reference: fn + ':' + nodePath.node.loc.start.line,
         };

test/test.js

@@ -1,9 +1,13 @@
 var assert = require('assert');
 var babel = require('@babel/core');
+var path = require('path');
+var rimraf = require('rimraf');
 
 var fs = require('fs');
 var plugin = require('../index.js');
 
+afterEach((done) => rimraf(path.join(__dirname, '*.po'), done));
+
 describe('babel-gettext-extractor', function() {
   describe('#extract()', function() {
     it('Should return a result for simple code example', function() {
@@ -177,6 +181,82 @@ describe('babel-gettext-extractor', function() {
       assert(content.indexOf('msgid "title"') !== -1);
     });
 
+    it('Should use a universal slash (windows to *nix)', () => {
+      var result = babel.transform('let t = _t("code");_t("hello");', {
+        filename: 'c:\\Users\\TheUser\\Project\\file.js',
+        plugins: [
+          [plugin, {
+            functionNames: {
+              _t: ['msgid'],
+            },
+            fileName: './test/first.po',
+            baseDirectory: 'c:\\Users\\TheUser\\Project\\',
+            universalSlash: '/',
+          }],
+        ],
+      });
+      assert(!!result);
+
+      var content = fs.readFileSync('./test/first.po');
+      assert(content.indexOf('Project/file.js') !== -1);
+    });
+
+    it('Should use a universal slash (*nix to windows)', () => {
+      var result = babel.transform('let t = _t("code");_t("hello");', {
+        filename: '/home/user/projects/code/file.js',
+        plugins: [
+          [plugin, {
+            functionNames: {
+              _t: ['msgid'],
+            },
+            fileName: './test/slash-windows.po',
+            baseDirectory: '/home/user/projects/',
+            universalSlash: '\\',
+          }],
+        ],
+      });
+      assert(!!result);
+
+      var content = fs.readFileSync('./test/slash-windows.po', 'utf8');
+      assert(content.indexOf('code\\file.js') !== -1);
+    });
+
+    it('should strip the base directory', () => {
+      var result = babel.transform('let t = _t("code");_t("hello");', {
+        filename: path.sep + ['this', 'is', 'the', 'path', 'file.js'].join(path.sep),
+        plugins: [
+          [plugin, {
+            baseDirectory: path.sep + ['this', 'is', 'the', 'path'].join(path.sep),
+            functionNames: {
+              _t: ['msgid'],
+            },
+            fileName: './test/strip-base-1.po',
+          }],
+        ],
+      });
+      assert(!!result);
+      var content = fs.readFileSync('./test/strip-base-1.po');
+      assert(content.indexOf('#: file.js') !== -1);
+    });
+
+    it('should strip the base if it ends in slash', () => {
+      var result = babel.transform('let t = _t("code");_t("hello");', {
+        filename: path.sep + ['this', 'is', 'the', 'path', 'file.js'].join(path.sep),
+        plugins: [
+          [plugin, {
+            baseDirectory: path.sep + ['this', 'is', 'the', 'path'].join(path.sep) + path.sep,
+            functionNames: {
+              _t: ['msgid'],
+            },
+            fileName: './test/strip-base-2.po',
+          }],
+        ],
+      });
+      assert(!!result);
+      var content = fs.readFileSync('./test/strip-base-2.po');
+      assert(content.indexOf('#: file.js') !== -1);
+    });
+
     it('Should decide on a filename dynamically', function() {
       const code = '_t("Dynamic Filenames")';