feat: add support for indian phone numbers (#4)

* add add support for indian phone numbers (#4)
* test indian not-exact condition
* add tests
* update readme

Author: Livin21

README.md

@@ -23,6 +23,11 @@ phone({ exact: true }).test('apple 1234567890') // => false
 phone().test('1234567890')       // => true
 phone().test('apple 1234567890') // => true
 phone().test('apple')            // => false
+
+// Indian option
+phone({ indian: true }).test('mango 9744142626')              // => true
+phone({ indian: true }).test('mango 1234567890')              // => false
+phone({ indian: true, exact: true }).test('mango 9744142626') // => false
 ```
 
 ## Acknowledgements
@@ -42,3 +47,4 @@ MIT
 5. Create new Pull Request
 
 Crafted with <3 by [John Otander](http://johnotander.com).
+Support for Indian Numbers added by [Livin Mathew](https://github.com/Livin21).

index.js

@@ -3,7 +3,9 @@
 module.exports = function(options) {
   options = options || {};
   var regexBase = '(?:\\+?(\\d{1,3}))?[-. (]*(\\d{3})[-. )]*(\\d{3})[-. ]*(\\d{4})(?: *x(\\d+))?';
+  var indianRegexBase = '(?:(?:\\+|0{0,2})91(\\s*[\\ -]\\s*)?|[0]?)?[789]\\d{9}|(\\d[ -]?){10}\\d';
 
-  return options.exact ? new RegExp('^' + regexBase + '$') :
+  return options.indian ? options.exact ? new RegExp('^' + indianRegexBase + '$') :
+                         new RegExp('\\s*' + indianRegexBase + '\\s*', 'g') : options.exact ? new RegExp('^' + regexBase + '$') :
                          new RegExp('\\s*' + regexBase + '\\s*', 'g');
 }

test/test.js

@@ -3,6 +3,7 @@ var phone = require('..');
 
 describe('phone-regex', function() {
 
+  // !indian exact
   describe('exact: true', function() {
 
     it('should find a (XXX) XXX-XXXX phone number when it exists', function() {
@@ -42,6 +43,45 @@ describe('phone-regex', function() {
     });
   });
 
+  // indian !exact
+  describe('indian: true', function() {
+    
+    it('should find an Indian phone number when it exists', function() {
+      assert.equal(phone({indian: true}).test('mangoes +91 9744142626'), true);
+    });
+
+    it('should find all Indian phone numbers in a string', function() {
+      assert.equal('+91 9744142626 orange 04842 274162'.match(phone({indian: true})).length, 2);
+    });
+
+    it('should not find phone numbers when they do not exist', function() {
+      assert.equal('pineapples'.match(phone({indian: true})), null);
+    });
+
+  });
+
+  // indian exact
+  describe('indian: true, exact: true', function() {
+    
+    it('should find a (+91 XXXXXXXXXX) phone number when it exists', function() {
+      assert.equal(phone({indian: true, exact: true}).test('+91 9744142626'), true);
+    });
+
+    it('should find a (XXXXX XXXXXX) phone number when it exists', function() {
+      assert.equal(phone({indian: true, exact: true}).test('04842 274162'), true);
+    });
+
+    it('should find a (XXXXXXXXXX) phone number when it exists', function() {
+      assert.equal(phone({indian: true, exact: true}).test('9744142626'), true);
+    });
+
+    it('should find a (XXXX - XXXXXXXXXX) phone number when it exists', function() {
+      assert.equal(phone({indian: true, exact: true}).test('0091 - 9744142626'), true);
+    });
+
+  });
+
+  // !indian !exact
   describe('g', function() {
 
     it('should find a phone number when it exists', function() {