Move Add-on SDK source to toolkit/jetpack

toolkit/jetpack/diffpatcher/.travis.yml

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+language: node_js
+node_js:
+  - 0.4
+  - 0.5
+  - 0.6

toolkit/jetpack/diffpatcher/History.md

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+# Changes
+
+## 1.0.1 / 2013-05-01
+
+  - Update method library version.
+
+## 1.0.0 / 2012-11-09
+
+  - Test integration for browsers.
+  - New method library.
+
+## 0.0.1 / 2012-10-22
+
+  - Initial release

toolkit/jetpack/diffpatcher/License.md

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+Copyright 2012 Irakli Gozalishvili. All rights reserved.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to
+deal in the Software without restriction, including without limitation the
+rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+IN THE SOFTWARE.

toolkit/jetpack/diffpatcher/Readme.md

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+# diffpatcher
+
+[![Build Status](https://secure.travis-ci.org/Gozala/diffpatcher.png)](http://travis-ci.org/Gozala/diffpatcher)
+
+[![Browser support](https://ci.testling.com/Gozala/diffpatcher.png)](http://ci.testling.com/Gozala/diffpatcher)
+
+Diffpatcher is a small library that lets you treat hashes as if they were
+git repositories.
+
+## diff
+
+Diff function that takes two hashes and returns delta hash.
+
+```js
+var diff = require("diffpatcher/diff")
+
+diff({ a: { b: 1 }, c: { d: 2 } },      // hash#1
+     { a: { e: 3 }, c: { d: 4 } })      // hash#2
+
+// => {                                 // delta
+//      a: {
+//        b: null,        // -
+//        e: 3            // +
+//      },
+//      c: {
+//        d: 4            // ±
+//      }
+//    }
+```
+
+As you can see from the example above `delta` makes no real distinction between
+proprety upadate and property addition. Try to think of additions as an update
+from `undefined` to whatever it's being updated to.
+
+## patch
+
+Patch fuction takes a `hash` and a `delta` and returns a new `hash` which is
+just like orginial but with delta applied to it. Let's apply delta from the
+previous example to the first hash from the same example
+
+
+```js
+var patch = require("diffpatcher/patch")
+
+patch({ a: { b: 1 }, c: { d: 2 } },     // hash#1
+      {                                 // delta
+        a: {
+          b: null,        // -
+          e: 3            // +
+        },
+        c: {
+          d: 4            // ±
+        }
+      })
+
+// => { a: { e: 3 }, c: { d: 4 } }      // hash#2
+```
+
+That's about it really, just diffing hashes and applying thes diffs on them.
+
+
+### rebase
+
+And as Linus mentioned everything in git can be expressed with `rebase`, that
+also pretty much the case for `diffpatcher`. `rebase` takes `target` hash,
+and rebases `parent` onto it with `diff` applied.
+
+## Install
+
+    npm install diffpatcher

toolkit/jetpack/diffpatcher/diff.js

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+"use strict";
+
+var method = require("../method/core")
+
+// Method is designed to work with data structures representing application
+// state. Calling it with a state should return object representing `delta`
+// that has being applied to a previous state to get to a current state.
+//
+// Example
+//
+// diff(state) // => { "item-id-1": { title: "some title" } "item-id-2": null }
+var diff = method("diff@diffpatcher")
+
+// diff between `null` / `undefined` to any hash is a hash itself.
+diff.define(null, function(from, to) { return to })
+diff.define(undefined, function(from, to) { return to })
+diff.define(Object, function(from, to) {
+  return calculate(from, to || {}) || {}
+})
+
+function calculate(from, to) {
+  var diff = {}
+  var changes = 0
+  Object.keys(from).forEach(function(key) {
+    changes = changes + 1
+    if (!(key in to) && from[key] != null) diff[key] = null
+    else changes = changes - 1
+  })
+  Object.keys(to).forEach(function(key) {
+    changes = changes + 1
+    var previous = from[key]
+    var current = to[key]
+    if (previous === current) return (changes = changes - 1)
+    if (typeof(current) !== "object") return diff[key] = current
+    if (typeof(previous) !== "object") return diff[key] = current
+    var delta = calculate(previous, current)
+    if (delta) diff[key] = delta
+    else changes = changes - 1
+  })
+  return changes ? diff : null
+}
+
+diff.calculate = calculate
+
+module.exports = diff

toolkit/jetpack/diffpatcher/index.js

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+"use strict";
+
+exports.diff = require("./diff")
+exports.patch = require("./patch")
+exports.rebase = require("./rebase")

toolkit/jetpack/diffpatcher/package.json

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+{
+  "name": "diffpatcher",
+  "id": "diffpatcher",
+  "version": "1.2.0",
+  "description": "Utilities for diff-ing & patch-ing hashes",
+  "keywords": [
+    "diff", "patch", "rebase", "hash", "changes", "versions"
+  ],
+  "author": "Irakli Gozalishvili <rfobic@gmail.com> (http://jeditoolkit.com)",
+  "homepage": "https://github.com/Gozala/diffpatcher",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Gozala/diffpatcher.git",
+    "web": "https://github.com/Gozala/diffpatcher"
+  },
+  "bugs": {
+    "url": "http://github.com/Gozala/diffpatcher/issues/"
+  },
+  "dependencies": {
+    "method": "~2.0.0"
+  },
+  "devDependencies": {
+    "test": "~0.x.0",
+    "phantomify": "~0.x.0",
+    "retape": "~0.x.0",
+    "tape": "~0.1.5"
+  },
+  "main": "./index.js",
+  "scripts": {
+    "test": "npm run test-node && npm run test-browser",
+    "test-browser": "node ./node_modules/phantomify/bin/cmd.js ./test/common.js",
+    "test-node": "node ./test/common.js",
+    "test-tap": "node ./test/tap.js"
+  },
+  "testling": {
+    "files": "test/tap.js",
+    "browsers": [
+      "ie/9..latest",
+      "chrome/25..latest",
+      "firefox/20..latest",
+      "safari/6..latest",
+      "opera/11.0..latest",
+      "iphone/6..latest",
+      "ipad/6..latest",
+      "android-browser/4.2..latest"
+    ]
+  },
+  "licenses": [
+    {
+      "type": "MIT",
+      "url": "https://github.com/Gozala/diffpatcher/License.md"
+    }
+  ]
+}

toolkit/jetpack/diffpatcher/patch.js

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+"use strict";
+
+var method = require("../method/core")
+var rebase = require("./rebase")
+
+// Method is designed to work with data structures representing application
+// state. Calling it with a state and delta should return object representing
+// new state, with changes in `delta` being applied to previous.
+//
+// ## Example
+//
+// patch(state, {
+//   "item-id-1": { completed: false }, // update
+//   "item-id-2": null                  // delete
+// })
+var patch = method("patch@diffpatcher")
+patch.define(Object, function patch(hash, delta) {
+  return rebase({}, hash, delta)
+})
+
+module.exports = patch

toolkit/jetpack/diffpatcher/rebase.js

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+"use strict";
+
+var nil = {}
+var owns = ({}).hasOwnProperty
+
+function rebase(result, parent, delta) {
+  var key, current, previous, update
+  for (key in parent) {
+    if (owns.call(parent, key)) {
+      previous = parent[key]
+      update = owns.call(delta, key) ? delta[key] : nil
+      if (previous === null) continue
+      else if (previous === void(0)) continue
+      else if (update === null) continue
+      else if (update === void(0)) continue
+      else result[key] = previous
+    }
+  }
+  for (key in delta) {
+    if (owns.call(delta, key)) {
+      update = delta[key]
+      current = owns.call(result, key) ? result[key] : nil
+      if (current === update) continue
+      else if (update === null) continue
+      else if (update === void(0)) continue
+      else if (current === nil) result[key] = update
+      else if (typeof(update) !== "object") result[key] = update
+      else if (typeof(current) !== "object") result[key] = update
+      else result[key]= rebase({}, current, update)
+    }
+  }
+
+  return result
+}
+
+module.exports = rebase

toolkit/jetpack/diffpatcher/test/common.js

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+"use strict";
+
+require("test").run(require("./index"))

toolkit/jetpack/diffpatcher/test/diff.js

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+"use strict";
+
+var diff = require("../diff")
+
+exports["test diff from null"] = function(assert) {
+  var to = { a: 1, b: 2 }
+  assert.equal(diff(null, to), to, "diff null to x returns x")
+  assert.equal(diff(void(0), to), to, "diff undefined to x returns x")
+
+}
+
+exports["test diff to null"] = function(assert) {
+  var from = { a: 1, b: 2 }
+  assert.deepEqual(diff({ a: 1, b: 2 }, null),
+                   { a: null, b: null },
+                   "diff x null returns x with all properties nullified")
+}
+
+exports["test diff identical"] = function(assert) {
+  assert.deepEqual(diff({}, {}), {}, "diff on empty objects is {}")
+
+  assert.deepEqual(diff({ a: 1, b: 2 }, { a: 1, b: 2 }), {},
+                   "if properties match diff is {}")
+
+  assert.deepEqual(diff({ a: 1, b: { c: { d: 3, e: 4 } } },
+                        { a: 1, b: { c: { d: 3, e: 4 } } }), {},
+                   "diff between identical nested hashes is {}")
+
+}
+
+exports["test diff delete"] = function(assert) {
+  assert.deepEqual(diff({ a: 1, b: 2 }, { b: 2 }), { a: null },
+                   "missing property is deleted")
+  assert.deepEqual(diff({ a: 1, b: 2 }, { a: 2 }), { a: 2, b: null },
+                   "missing property is deleted another updated")
+  assert.deepEqual(diff({ a: 1, b: 2 }, {}), { a: null, b: null },
+                   "missing propertes are deleted")
+  assert.deepEqual(diff({ a: 1, b: { c: { d: 2 } } }, {}),
+                   { a: null, b: null },
+                   "missing deep propertes are deleted")
+  assert.deepEqual(diff({ a: 1, b: { c: { d: 2 } } }, { b: { c: {} } }),
+                   { a: null, b: { c: { d: null } } },
+                   "missing nested propertes are deleted")
+}
+
+exports["test add update"] = function(assert) {
+  assert.deepEqual(diff({ a: 1, b: 2 }, { b: 2, c: 3 }), { a: null, c: 3 },
+                   "delete and add")
+  assert.deepEqual(diff({ a: 1, b: 2 }, { a: 2, c: 3 }), { a: 2, b: null, c: 3 },
+                   "delete and adds")
+  assert.deepEqual(diff({}, { a: 1, b: 2 }), { a: 1, b: 2 },
+                   "diff on empty objcet returns equivalen of to")
+  assert.deepEqual(diff({ a: 1, b: { c: { d: 2 } } }, { d: 3 }),
+                   { a: null, b: null, d: 3 },
+                   "missing deep propertes are deleted")
+  assert.deepEqual(diff({ b: { c: {} }, d: null }, { a: 1, b: { c: { d: 2 } } }),
+                   { a: 1, b: { c: { d: 2 } } },
+                   "missing nested propertes are deleted")
+}

toolkit/jetpack/diffpatcher/test/index.js

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+"use strict";
+
+var diff = require("../diff")
+var patch = require("../patch")
+
+exports["test diff"] = require("./diff")
+exports["test patch"] = require("./patch")
+
+exports["test patch(a, diff(a, b)) => b"] = function(assert) {
+  var a = { a: { b: 1 }, c: { d: 2 } }
+  var b = { a: { e: 3 }, c: { d: 4 } }
+
+  assert.deepEqual(patch(a, diff(a, b)), b, "patch(a, diff(a, b)) => b")
+}

toolkit/jetpack/diffpatcher/test/patch.js

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+"use strict";
+
+var patch = require("../patch")
+
+exports["test patch delete"] = function(assert) {
+  var hash = { a: 1, b: 2 }
+
+  assert.deepEqual(patch(hash, { a: null }), { b: 2 }, "null removes property")
+}
+
+exports["test patch delete with void"] = function(assert) {
+  var hash = { a: 1, b: 2 }
+
+  assert.deepEqual(patch(hash, { a: void(0) }), { b: 2 },
+                   "void(0) removes property")
+}
+
+exports["test patch delete missing"] = function(assert) {
+  assert.deepEqual(patch({ a: 1, b: 2 }, { c: null }),
+                   { a: 1, b: 2 },
+                   "null removes property if exists");
+
+  assert.deepEqual(patch({ a: 1, b: 2 }, { c: void(0) }),
+                   { a: 1, b: 2 },
+                   "void removes property if exists");
+}
+
+exports["test delete deleted"] = function(assert) {
+  assert.deepEqual(patch({ a: null, b: 2, c: 3, d: void(0)},
+                         { a: void(0), b: null, d: null }),
+                   {c: 3},
+                  "removed all existing and non existing");
+}
+
+exports["test update deleted"] = function(assert) {
+  assert.deepEqual(patch({ a: null, b: void(0), c: 3},
+                         { a: { b: 2 } }),
+                   { a: { b: 2 }, c: 3 },
+                   "replace deleted");
+}
+
+exports["test patch delete with void"] = function(assert) {
+  var hash = { a: 1, b: 2 }
+
+  assert.deepEqual(patch(hash, { a: void(0) }), { b: 2 },
+                   "void(0) removes property")
+}
+
+
+exports["test patch addition"] = function(assert) {
+  var hash = { a: 1, b: 2 }
+
+  assert.deepEqual(patch(hash, { c: 3 }), { a: 1, b: 2, c: 3 },
+                   "new properties are added")
+}
+
+exports["test patch addition"] = function(assert) {
+  var hash = { a: 1, b: 2 }
+
+  assert.deepEqual(patch(hash, { c: 3 }), { a: 1, b: 2, c: 3 },
+                   "new properties are added")
+}
+
+exports["test hash on itself"] = function(assert) {
+  var hash = { a: 1, b: 2 }
+
+  assert.deepEqual(patch(hash, hash), hash,
+                   "applying hash to itself returns hash itself")
+}
+
+exports["test patch with empty delta"] = function(assert) {
+  var hash = { a: 1, b: 2 }
+
+  assert.deepEqual(patch(hash, {}), hash,
+                   "applying empty delta results in no changes")
+}
+
+exports["test patch nested data"] = function(assert) {
+  assert.deepEqual(patch({ a: { b: 1 }, c: { d: 2 } },
+                         { a: { b: null, e: 3 }, c: { d: 4 } }),
+                   { a: { e: 3 }, c: { d: 4 } },
+                   "nested structures can also be patched")
+}

toolkit/jetpack/diffpatcher/test/tap.js

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+"use strict";
+
+require("retape")(require("./index"))