Nikko Bitmap Transformer Submission

bitmap-team-TeamName/.eslintrc

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+{
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": [ "error", "single" ],
+    "semi": ["error", "always"],
+    "linebreak-style": [ "error", "unix" ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true,
+    "jasmine": true
+  },
+  "ecmaFeatures": {
+    "modules": true,
+    "experimentalObjectRestSpread": true,
+    "impliedStrict": true
+  },
+  "extends": "eslint:recommended"
+}

bitmap-team-TeamName/.gitignore

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+# Created by https://www.gitignore.io/api/node,vim,osx,macos,linux
+
+*node_modules
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+
+
+### Vim ###
+# swap
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+
+### OSX ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+# Thumbnails
+._*
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+
+### macOS ###
+# Icon must end with two \r
+# Thumbnails
+# Files that might appear in the root of a volume
+# Directories potentially created on remote AFP share
+
+
+### Linux ###
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+# End of https://www.gitignore.io/api/node,vim,osx,macos,linux

bitmap-team-TeamName/README.md

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+## Bitmap Transformer
+
+The Bitmap Transformer allows you to change any shape and size 8-bit palette bitmap file (extension .bmp) using your terminal command line and node.js.
+
+***
+## How to Use
+
+* Install node.js if you do not have it (if you are not sure how, here is a [tutorial](https://docs.npmjs.com/getting-started/installing-node)).
+* Clone the Bitmap Transformer.
+
+    ```
+    $ git clone https://github.com/radenska/04-bitmap_transformer.git
+    ```
+* Navigate to the bitmap-team-TeamName directory and run the transformer.
+
+    ```
+    $ node index <filename> <transformation>
+    ```
+* You can view available files in the img directory, which is also where the new transformed files will appear (old filename + 'new').
+
+    ```
+    $ ls img
+    ```
+
+* The following transformations are available: red, green, blue, yellow, purple, invert, grayscale
+* Examples
+    ```
+    $ node index butterfly.bmp invert
+    ```
+    #### Original
+    ![N|Solid](https://raw.githubusercontent.com/radenska/04-bitmap_transformer/master/bitmap-team-TeamName/img/butterfly.bmp)
+    #### Inverted
+    ![N|Solid](https://raw.githubusercontent.com/radenska/04-bitmap_transformer/master/img/butterfly-inverted.bmp)
+
+
+***
+***
+
+#### *Created by*
+
+|Darcy McCabe|Nikko Pisciotti|Yana Radenska
+|:---:|:---:|:---:|
+[GitHub Repos](https://github.com/darms) |[GitHub Repos](https://github.com/npisciotti1)| [GitHub Repos](https://github.com/radenska)|

bitmap-team-TeamName/gulpfile.js

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+'use strict';
+
+const gulp = require('gulp');
+const eslint = require('gulp-eslint');
+const mocha = require('gulp-mocha');
+
+gulp.task('test', function() {
+  gulp.src('./test/*-test.js', { read: false })
+  .pipe(mocha({ reporter: 'spec' }));
+});
+
+gulp.task('lint', function() {
+  return gulp.src(['./**/*.js', '!node_modules/**']).pipe(eslint()).pipe(eslint.format()).pipe(eslint.failAfterError());
+});
+
+gulp.task('dev', function() {
+  gulp.watch(['**/*.js', '!node_modules/**'], ['lint', 'test']);
+});
+
+gulp.task('default', ['dev']);

bitmap-team-TeamName/index.js

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+'use strict';
+
+const fileReadHelper = require(`${__dirname}/lib/bmp-file-helper.js`);
+const bmpCon = require(`${__dirname}/model/bmp-constructor.js`);
+const makeBitMap = bmpCon.makeBitMap;
+
+
+if (!process.argv[2] || !process.argv[3]) {
+  console.error('Please enter two parameters: file name and transformation type (grayscale, invert, blue, green, red, yellow, purple)');
+  console.log('Format: node index <filename> <transformation type> Example: node index color-palette.bmp invert');
+  throw('error');
+}
+fileReadHelper.getBitMap(makeBitMap);

bitmap-team-TeamName/lib/bmp-file-helper.js

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+'use strict';
+
+const fs = require('fs');
+module.exports = exports = {};
+const filepath = `${__dirname}/../img/${process.argv[2]}`;
+const filepathNewfile = `${filepath.slice(0,filepath.length-4)}-new.bmp`;
+const testFilePath = `${filepath.slice(0,filepath.length-4)}-test.txt`;
+
+exports.getBitMap = function(cb) {
+  fs.readFile(filepath, function(err, data) {
+    if (err) throw err;
+    cb(data);
+  });
+};
+
+exports.newBitMap = function(data) {
+  fs.writeFile(filepathNewfile, data, function(err) {
+    if (err) throw err;
+    console.log('your new file can be found here: ', filepathNewfile);
+    // makeTestData(testFilePath, data);
+  });
+};
+
+
+//::this will write a buffer as a string to a new file for testing purposes::
+
+// var makeTestData = function(testFilePath, data) {
+//   var buffer = Buffer.from(data);
+//   var testData = buffer.toString('hex');
+//   fs.writeFile(testFilePath, testData, function() {
+//     console.log('Done writing test file!');
+//   });
+// };

bitmap-team-TeamName/model/bmp-constructor.js

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+'use strict';
+
+const fileReadHelper = require(`${__dirname}/../lib/bmp-file-helper.js`);
+module.exports = exports = {};
+
+var bmObj = {};
+
+exports.makeBitMap = function(data) {
+  bmObj = new BitMap(data);
+  bmObj.prepareArray();
+  selectTransformation();
+  bmObj.packageArray();
+  fileReadHelper.newBitMap(bmObj.buffer);
+};
+
+function BitMap(data) {
+  this.type = data.toString('utf-8', 0, 2);
+  this.totalFileSize = data.readInt32LE(2);
+  this.arrayLoc = data.readInt32LE(10);
+  this.width = data.readInt32LE(18);
+  this.height = data.readInt32LE(22);
+  this.numColorPanes = data.readInt32LE(26);
+  this.bitsPerPixel = data.readInt32LE(28);
+  this.horizRes = data.readInt32LE(38);
+  this.verticRes = data.readInt32LE(42);
+  this.singles = data.toString('hex', 66, 1090).split('');
+  this.buffer = data;
+  this.pairs = [];
+  this.packaged = [];
+  this.transformed = [];
+}
+
+BitMap.prototype.prepareArray = function() {
+  for (let i = 0; i <= this.singles.length - 2; i += 2) {
+    this.pairs.push(this.singles[i] + this.singles[i+1]);
+  }
+};
+
+BitMap.prototype.packageArray = function() {
+  for (let i = 0; i <= this.transformed.length - 4; i += 4) {
+    this.packaged.push(this.transformed[i] + this.transformed[i+1] + this.transformed[i+2]);
+  }
+  var offset = 66;
+  for (let i = 0; i < this.packaged.length; i++) {
+    this.buffer.write(this.packaged[i], offset, 'hex');
+    offset += 4;
+  }
+};
+
+BitMap.prototype.invert = function(){
+  this.transformed = this.pairs.map(val => { //invert colors
+    val = (255 - parseInt(val, 16)).toString(16);
+    if (val.length === 1) val = '0' + val;
+    return val;
+  });
+};
+
+BitMap.prototype.greyscale = function() {
+  //a grayscale formula: 0.2989*red + 0.5870*green + 0.1140*blue, then each value (R, G, and B) is assigned the weighted average
+  var grayArray = this.pairs.map(val => parseInt(val, 16));
+  for (let i = 0; i < grayArray.length - 4; i += 4) {
+    let sumRGB = Math.floor(grayArray[i]*0.114 + grayArray[i+1]*0.587 + grayArray[i+2]*0.2989); //calculate weighted average
+    grayArray[i] = grayArray[i+1] = grayArray[i+2] = sumRGB; //each value equals the sum
+  }
+  this.transformed = grayArray.map(val => { //turn into string and assign to transformed
+    val = val.toString(16);
+    if (val.length === 1) val = '0' + val;
+    return val;
+  });
+};
+
+BitMap.prototype.colorify = function(colorIndex, i2, i3) {
+  this.transformColor(colorIndex, 0.7);
+  this.transformColor(i2, 0); //set non chosen values to 0
+  this.transformColor(i3, 0);
+  this.transformed = this.pairs;
+};
+
+BitMap.prototype.transformColor = function(start, colorVal) {
+  // position 0: blue 1: green 2: red 3: padding
+  for (let i = start; i <= this.pairs.length - 4; i += 4) { //change blue values
+    this.pairs[i] = Math.floor((parseInt(this.pairs[i], 16))*colorVal);
+    if (this.pairs[i] > 255) this.pairs[i] = 255;
+    this.pairs[i] = this.pairs[i].toString(16);
+    if (this.pairs[i].length === 1) this.pairs[i] = '0' + this.pairs[i];
+  }
+};
+
+function selectTransformation() {
+  let userChoice = process.argv[3].toLowerCase();
+  if (userChoice === 'blue') bmObj.colorify(0, 1, 2);
+  if (userChoice === 'red') bmObj.colorify(2, 0, 1);
+  if (userChoice === 'green') bmObj.colorify(1, 0, 2);
+  if (userChoice === 'invert') bmObj.invert();
+  if (userChoice === 'purple') {
+    bmObj.colorify(0, 1, 1);
+    bmObj.colorify(2, 1, 1);
+  }
+  if (userChoice === 'yellow') {
+    bmObj.colorify(1, 0, 0);
+    bmObj.colorify(2, 0, 0);
+  }
+  if (userChoice === 'grayscale' || userChoice === 'greyscale') bmObj.greyscale();
+}

bitmap-team-TeamName/package.json

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+{
+  "name": "bitmap-team-TeamName",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "directories": {
+    "test": "test"
+  },
+  "devDependencies": {
+    "chai": "^3.5.0",
+    "gulp": "^3.9.1",
+    "gulp-eslint": "^3.0.1",
+    "gulp-mocha": "^3.0.1",
+    "mocha": "^3.2.0"
+  },
+  "scripts": {
+    "test": "mocha"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC"
+}