git-diff - npm Package Compare versions

Comparing version 1.0.3 to 1.0.4

index.js

 'use strict'
 
+var jsDiff = require('diff')
+var color = require('./color')
+var pkg = require('./package.json')
+
 function toBoolean(bool) {
@@ -8,7 +12,51 @@ if (bool === 'false') bool = false
 
-var gitDiff = function(str1, str2, color) {
-  color = toBoolean(color)
-  return '' + str1 + str2 + color
+function replaceAllButLast(str, pOld, pNew) {
+  str = str.replace(new RegExp(pOld, 'g'), pNew)
+  str = str.replace(new RegExp(pNew + '$'), pOld)
+  return str
 }
 
+var gitDiff = function(str1, str2, pColor) {
+
+  if (typeof str1 !== 'string' || typeof str2 !== 'string') {
+    throw TypeError('Both inputs to ' + pkg.name + ' must be strings')
+  }
+  pColor = toBoolean(pColor)
+
+  var diff = jsDiff.diffLines(str1, str2)
+
+  var isDiff = diff.some(function(item) {
+    return item.added || item.removed
+  })
+
+  var accumulatedDiff = ''
+
+  if (isDiff) {
+    diff.forEach(function(part) {
+      var culla, prefix
+      if (part.added) {
+        culla = 'green'
+        prefix = '+'
+        part.value = replaceAllButLast(part.value, '\n', '\n ')
+      } else if (part.removed) {
+        culla = 'red'
+        prefix = '-'
+        part.value = replaceAllButLast(part.value, '\n', '\n ')
+      } else {
+        culla = 'grey'
+        prefix = ''
+      }
+      part.diff = prefix + part.value
+      if (pColor) part.diff = color.add(part.diff, culla)
+      accumulatedDiff += part.diff
+    })
+    return (accumulatedDiff)
+
+  } else {
+    var noDiff = 'no difference'
+    if (pColor) noDiff = color.add(noDiff, 'grey')
+    return (noDiff)
+  }
+}
+
 module.exports = gitDiff

package.json

 {
   "name": "git-diff",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "Returns the git diff of two strings",
@@ -28,2 +28,3 @@ "author": "Daniel Lewis BSc (Hons)",
   "dependencies": {
+    "chalk": "^2.1.0",
     "diff": "^3.3.0"
@@ -39,2 +40,3 @@ },
     "npm-run-all": "^4.0.2",
+    "readfilego": "^1.0.3",
     "sinon": "^3.2.1",
@@ -41,0 +43,0 @@ "sinon-chai": "^2.13.0"

README.md

@@ -11,1 +11,51 @@ # git-diff
 **Returns the git diff of two strings**
+
+
+
+<br>
+
+## Usage
+
+`npm install --save git-diff`
+
+git-diff takes 3 arguments, the **first string to diff**, the **second string to diff** and optionally a **color flag (boolean)**
+
+git-diff returns a string containing the difference
+ 
+The color flag (defaults to false) indicates whether you want the return value to be colorized with [chalk](https://www.npmjs.com/package/chalk)
+
+Examples to demonstrate usage follow.
+ 
+With color:
+
+```javascript 1.5
+var gitDiff = require('git-diff')
+var actual = gitDiff('a\nb\n', 'a\nc\n', true)
+expect(actual).to.equal('a\n-b\n+c\n')
+```
+
+Without color:
+
+```javascript 1.5
+var gitDiff = require('git-diff')
+var actual = gitDiff('a\nb\n', 'a\nc\n')
+expect(actual).to.equal('a\n-b\n+c\n')
+```
+
+
+
+<br>
+
+## Author says
+
+What's the **difference** between how God treats the righteous and the wicked?
+
+> And God saw that the light was good. And God separated the light from the darkness. [Genesis 1:4 ESV](https://www.biblegateway.com/passage/?search=Genesis+1%3A4&version=ESV)
+
+And he will do it again:
+
+> Let both grow together until the harvest, and at harvest time I will tell the reapers, “Gather the weeds first and bind them in bundles to be burned, but gather the wheat into my barn.” [Matthew 13:30 ESV](https://www.biblegateway.com/passage/?search=matthew+13%3A30&version=ESV)
+
+Much love :D
+
+<br><br><br><br><br>

test/_js/testImports.js

@@ -12,10 +12,14 @@ 'use strict'
 // others
+var readfilego = require('readfilego')
 
 // custom
+var color = require('../../color')
 
 var testImports = {
   expect: expect,
-  sinon: sinon
+  sinon: sinon,
+  readfilego: readfilego,
+  color: color
 }
 
 module.exports = testImports

test/gitDiff/gitDiff.spec.js

@@ -5,32 +5,66 @@ 'use strict'
 var gitDiff = require('../../index')
+var pkg = require('../../package.json')
 
 describe('gitDiff', function() {
 
-  // var DEFAULTS, sandbox
-  //
-  // before(function() {
-  //   imp.logger.setLevel('silent')
-  // })
-  //
-  // beforeEach(function() {
-  //   delete require.cache[require.resolve('../../js/normaliseOptions/defaultOptions')]
-  //   DEFAULTS = require('../../js/normaliseOptions/defaultOptions')
-  //   sandbox = imp.sinon.sandbox.create()
-  //   sandbox.spy(imp.logger, 'info')
-  //   sandbox.stub(DEFAULTS, 'logFunc')
-  // })
-  //
-  // afterEach(function() {
-  //   sandbox.restore()
-  // })
+  var sandbox
 
-  it('gitDiff', function() {
-    var actual = gitDiff('', '', 'false')
-    imp.expect(actual).to.equal('false')
+  beforeEach(function() {
+    sandbox = imp.sinon.sandbox.create()
+    sandbox.spy(imp.color, 'add')
   })
 
-  it('gitDiff', function() {
-    var actual = gitDiff('', '', true)
-    imp.expect(actual).to.equal('true')
+  afterEach(function() {
+    sandbox.restore()
   })
+
+  describe('color', function() {
+
+    it('difference', function() {
+      var str1 = imp.readfilego(__dirname + '/str1.txt', {throw: true, save: true})
+      var str2 = imp.readfilego(__dirname + '/str2.txt')
+      var expected = imp.readfilego(__dirname + '/gitDiff.txt')
+      var actual = gitDiff(str1, str2, true)
+      imp.expect(imp.color.add).to.have.been.calledWith(imp.sinon.match.any, 'green')
+      imp.expect(imp.color.add).to.have.been.calledWith(imp.sinon.match.any, 'red')
+      imp.expect(imp.color.add).to.have.been.calledWith(imp.sinon.match.any, 'grey')
+      imp.expect(actual).to.equal(expected)
+    })
+
+    it('no difference', function() {
+      var actual = gitDiff('', '', true)
+      imp.expect(imp.color.add).to.have.not.been.calledWith(imp.sinon.match.any, 'green')
+      imp.expect(imp.color.add).to.have.not.been.calledWith(imp.sinon.match.any, 'red')
+      imp.expect(imp.color.add).to.have.been.calledWith(imp.sinon.match.any, 'grey')
+      imp.expect(actual).to.equal('no difference')
+    })
+  })
+
+  describe('no color', function() {
+
+    it('difference', function() {
+      var str1 = imp.readfilego(__dirname + '/str1.txt', {throw: true, save: true})
+      var str2 = imp.readfilego(__dirname + '/str2.txt')
+      var expected = imp.readfilego(__dirname + '/gitDiff.txt')
+      var actual = gitDiff(str1, str2)
+      imp.expect(imp.color.add).to.have.not.been.called
+      imp.expect(actual).to.equal(expected)
+    })
+
+    it('no difference', function() {
+      var actual = gitDiff('', '', 'false')
+      imp.expect(imp.color.add).to.have.not.been.called
+      imp.expect(actual).to.equal('no difference')
+    })
+  })
+
+  it('type error', function() {
+    imp.expect(function() {
+      gitDiff(undefined, '')
+    }).to.throw('Both inputs to ' + pkg.name + ' must be strings')
+
+    imp.expect(function() {
+      gitDiff('', undefined)
+    }).to.throw('Both inputs to ' + pkg.name + ' must be strings')
+  })
 })

TODO.md

 * Add more keywords
+
+* Contrast output with git diff
+
+* Update README
+
+* Update examples spec file
+
+* Tidy code

No alert changes

Improved metrics

Total package byte prevSize

74761

9.02%

Number of package files

20

53.85%

Lines of code

203

123.08%

Number of lines in readme file

61

454.55%

Worsened metrics

Dependency count

2

100%

Dev dependency count

10

11.11%

Dependency changes

• + Added

  chalk@^2.1.0

• + Added

  ansi-styles@3.2.1
  (transitive)

• + Added

  chalk@2.4.2
  (transitive)

• + Added

  color-convert@1.9.3
  (transitive)

• + Added

  color-name@1.1.3
  (transitive)

• + Added

  escape-string-regexp@1.0.5
  (transitive)

• + Added

  has-flag@3.0.0
  (transitive)

• + Added

  supports-color@5.5.0
  (transitive)