Initial import with skill sheet working

node_modules/image-size/LICENSE

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+The MIT License (MIT)
+
+Copyright © 2017 Aditya Yadav, http://netroy.in
+
+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.

node_modules/image-size/Readme.md

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+# image-size
+
+[![NPM Version](https://img.shields.io/npm/v/image-size.svg)](https://www.npmjs.com/package/image-size)
+[![Build Status](https://travis-ci.org/image-size/image-size.svg?branch=master)](https://travis-ci.org/image-size/image-size)
+[![NPM Downloads](https://img.shields.io/npm/dm/image-size.svg)](http://npm-stat.com/charts.html?package=image-size&author=&from=&to=)
+[![Coverage Status](https://img.shields.io/coveralls/image-size/image-size/master.svg)](https://coveralls.io/github/image-size/image-size?branch=master)
+[![devDependency Status](https://david-dm.org/image-size/image-size/dev-status.svg)](https://david-dm.org/image-size/image-size#info=devDependencies)
+
+A [Node](https://nodejs.org/en/) module to get dimensions of any image file
+
+## Supported formats
+
+* BMP
+* GIF
+* JPEG
+* PNG
+* PSD
+* TIFF
+* WebP
+* SVG
+* DDS
+
+### Upcoming
+
+* SWF
+
+## Programmatic Usage
+
+```
+npm install image-size --save
+```
+
+### Synchronous
+
+```javascript
+var sizeOf = require('image-size');
+var dimensions = sizeOf('images/funny-cats.png');
+console.log(dimensions.width, dimensions.height);
+```
+
+### Asynchronous
+
+```javascript
+var sizeOf = require('image-size');
+sizeOf('images/funny-cats.png', function (err, dimensions) {
+  console.log(dimensions.width, dimensions.height);
+});
+```
+NOTE: The asynchronous version doesn't work if the input is a Buffer. Use synchronous version instead.
+
+### Using a URL
+
+```javascript
+var url = require('url');
+var http = require('http');
+
+var sizeOf = require('image-size');
+
+var imgUrl = 'http://my-amazing-website.com/image.jpeg';
+var options = url.parse(imgUrl);
+
+http.get(options, function (response) {
+  var chunks = [];
+  response.on('data', function (chunk) {
+    chunks.push(chunk);
+  }).on('end', function() {
+    var buffer = Buffer.concat(chunks);
+    console.log(sizeOf(buffer));
+  });
+});
+```
+
+You can optionally check the buffer lengths & stop downloading the image after a few kilobytes.
+**You don't need to download the entire image**
+
+## Command-Line Usage (CLI)
+
+```
+npm install image-size --global
+image-size image1 [image2] [image3] ...
+```
+
+## Credits
+
+not a direct port, but an attempt to have something like
+[dabble's imagesize](https://github.com/dabble/imagesize/blob/master/lib/image_size.rb) as a node module.
+
+## [Contributors](Contributors.md)

node_modules/image-size/bin/image-size.js

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+#!/usr/bin/env node
+'use strict';
+
+var fs = require('fs');
+var path = require('path');
+
+var imageSize = require('..');
+
+var files = process.argv.slice(2);
+
+if (!files.length) {
+  console.error('Usage: image-size image1 [image2] [image3] ...');
+  process.exit(-1);
+}
+
+var red = ['\x1B[31m', '\x1B[39m'];
+// var bold = ['\x1B[1m',  '\x1B[22m'];
+var grey = ['\x1B[90m', '\x1B[39m'];
+var green = ['\x1B[32m', '\x1B[39m'];
+
+files.forEach(function (image) {
+  try {
+    if (fs.existsSync(path.resolve(image))) {
+      var size = imageSize(image);
+      var label = green[0] + size.width + green[1] +
+                  grey[0] + 'x' + grey[1] +
+                  green[0] + size.height + green[1];
+      console.info(label, '-', grey[0] + image + grey[1]);
+    } else {
+      console.error('file doesn\'t exist - ', image);
+    }
+  } catch (e) {
+    // console.error(e.stack);
+    console.error(red[0] + e.message + red[1], '-', image);
+  }
+});

node_modules/image-size/lib/detector.js

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+'use strict';
+
+var typeMap = {};
+var types = require('./types');
+
+// load all available handlers
+types.forEach(function (type) {
+  typeMap[type] = require('./types/' + type).detect;
+});
+
+module.exports = function (buffer, filepath) {
+  var type, result;
+  for (type in typeMap) {
+    result = typeMap[type](buffer, filepath);
+    if (result) {
+      return type;
+    }
+  }
+};

node_modules/image-size/lib/index.js

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+'use strict';
+
+var fs = require('fs');
+var path = require('path');
+
+var detector = require('./detector');
+
+var handlers = {};
+var types = require('./types');
+
+// load all available handlers
+types.forEach(function (type) {
+  handlers[type] = require('./types/' + type);
+});
+
+// Maximum buffer size, with a default of 128 kilobytes.
+// TO-DO: make this adaptive based on the initial signature of the image
+var MaxBufferSize = 128*1024;
+
+function lookup (buffer, filepath) {
+  // detect the file type.. don't rely on the extension
+  var type = detector(buffer, filepath);
+
+  // find an appropriate handler for this file type
+  if (type in handlers) {
+    var size = handlers[type].calculate(buffer, filepath);
+    if (size !== false) {
+      size.type = type;
+      return size;
+    }
+  }
+
+  // throw up, if we don't understand the file
+  throw new TypeError('unsupported file type: ' + type + ' (file: ' + filepath + ')');
+}
+
+function asyncFileToBuffer (filepath, callback) {
+  // open the file in read only mode
+  fs.open(filepath, 'r', function (err, descriptor) {
+    if (err) { return callback(err); }
+    var size = fs.fstatSync(descriptor).size;
+    if (size <= 0){return callback(new Error("File size is not greater than 0 —— " + filepath)); }
+    var bufferSize = Math.min(size, MaxBufferSize);
+    var buffer = new Buffer(bufferSize);
+    // read first buffer block from the file, asynchronously
+    fs.read(descriptor, buffer, 0, bufferSize, 0, function (err) {
+      if (err) { return callback(err); }
+      // close the file, we are done
+      fs.close(descriptor, function (err) {
+        callback(err, buffer);
+      });
+    });
+  });
+}
+
+function syncFileToBuffer (filepath) {
+  // read from the file, synchronously
+  var descriptor = fs.openSync(filepath, 'r');
+  var size = fs.fstatSync(descriptor).size;
+  var bufferSize = Math.min(size, MaxBufferSize);
+  var buffer = new Buffer(bufferSize);
+  fs.readSync(descriptor, buffer, 0, bufferSize, 0);
+  fs.closeSync(descriptor);
+  return buffer;
+}
+
+/**
+ * @params input - buffer or relative/absolute path of the image file
+ * @params callback - optional function for async detection
+ */
+module.exports = function (input, callback) {
+
+  // Handle buffer input
+  if (Buffer.isBuffer(input)) {
+    return lookup(input);
+  }
+
+  // input should be a string at this point
+  if (typeof input !== 'string') {
+    throw new TypeError('invalid invocation');
+  }
+
+  // resolve the file path
+  var filepath = path.resolve(input);
+
+  if (typeof callback === 'function') {
+    asyncFileToBuffer(filepath, function (err, buffer) {
+      if (err) { return callback(err); }
+
+      // return the dimensions
+      var dimensions;
+      try {
+        dimensions = lookup(buffer, filepath);
+      } catch (e) {
+        err = e;
+      }
+      callback(err, dimensions);
+    });
+  } else {
+    var buffer = syncFileToBuffer(filepath);
+    return lookup(buffer, filepath);
+  }
+};
+
+module.exports.types = types;

node_modules/image-size/lib/readUInt.js

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+'use strict';
+
+// Abstract reading multi-byte unsigned integers
+function readUInt (buffer, bits, offset, isBigEndian) {
+  offset = offset || 0;
+  var endian = !!isBigEndian ? 'BE' : 'LE';
+  var method = buffer['readUInt' + bits + endian];
+  return method.call(buffer, offset);
+}
+
+module.exports = readUInt;

node_modules/image-size/lib/types.js

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+'use strict';
+
+module.exports = [
+  'bmp',
+  'gif',
+  'jpg',
+  'png',
+  'psd',
+  'svg',
+  'tiff',
+  'webp',
+  'dds'
+];

node_modules/image-size/lib/types/bmp.js

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+'use strict';
+
+function isBMP (buffer) {
+  return ('BM' === buffer.toString('ascii', 0, 2));
+}
+
+function calculate (buffer) {
+  return {
+    'width': buffer.readUInt32LE(18),
+    'height': Math.abs(buffer.readInt32LE(22))
+  };
+}
+
+module.exports = {
+  'detect': isBMP,
+  'calculate': calculate
+};

node_modules/image-size/lib/types/dds.js

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+'use strict';
+
+function isDDS(buffer){
+	return buffer.readUInt32LE(0) === 0x20534444;
+}
+
+function calculate(buffer){
+	// read file resolution metadata
+	return {
+		'height': buffer.readUInt32LE(12),
+		'width': buffer.readUInt32LE(16)
+	};
+}
+
+module.exports = {
+	'detect': isDDS,
+	'calculate': calculate
+};

node_modules/image-size/lib/types/gif.js

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+'use strict';
+
+var gifRegexp = /^GIF8[79]a/;
+function isGIF (buffer) {
+  var signature = buffer.toString('ascii', 0, 6);
+  return (gifRegexp.test(signature));
+}
+
+function calculate(buffer) {
+  return {
+    'width': buffer.readUInt16LE(6),
+    'height': buffer.readUInt16LE(8)
+  };
+}
+
+module.exports = {
+  'detect': isGIF,
+  'calculate': calculate
+};

node_modules/image-size/lib/types/jpg.js

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+'use strict';
+
+// NOTE: we only support baseline and progressive JPGs here
+// due to the structure of the loader class, we only get a buffer
+// with a maximum size of 4096 bytes. so if the SOF marker is outside
+// if this range we can't detect the file size correctly.
+
+function isJPG (buffer) { //, filepath
+  var SOIMarker = buffer.toString('hex', 0, 2);
+  return ('ffd8' === SOIMarker);
+}
+
+function extractSize (buffer, i) {
+  return {
+    'height' : buffer.readUInt16BE(i),
+    'width' : buffer.readUInt16BE(i + 2)
+  };
+}
+
+function validateBuffer (buffer, i) {
+  // index should be within buffer limits
+  if (i > buffer.length) {
+    throw new TypeError('Corrupt JPG, exceeded buffer limits');
+  }
+  // Every JPEG block must begin with a 0xFF
+  if (buffer[i] !== 0xFF) {
+    throw new TypeError('Invalid JPG, marker table corrupted');
+  }
+}
+
+function calculate (buffer) {
+
+  // Skip 4 chars, they are for signature
+  buffer = buffer.slice(4);
+
+  var i, next;
+  while (buffer.length) {
+    // read length of the next block
+    i = buffer.readUInt16BE(0);
+
+    // ensure correct format
+    validateBuffer(buffer, i);
+
+    // 0xFFC0 is baseline standard(SOF)
+    // 0xFFC1 is baseline optimized(SOF)
+    // 0xFFC2 is progressive(SOF2)
+    next = buffer[i + 1];
+    if (next === 0xC0 || next === 0xC1 || next === 0xC2) {
+      return extractSize(buffer, i + 5);
+    }
+
+    // move to the next block
+    buffer = buffer.slice(i + 2);
+  }
+
+  throw new TypeError('Invalid JPG, no size found');
+}
+
+module.exports = {
+  'detect': isJPG,
+  'calculate': calculate
+};

node_modules/image-size/lib/types/png.js

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+'use strict';
+
+var pngSignature = 'PNG\r\n\x1a\n';
+var pngImageHeaderChunkName = 'IHDR';
+var pngFriedChunkName = 'CgBI'; // Used to detect "fried" png's: http://www.jongware.com/pngdefry.html
+
+function isPNG (buffer) {
+  if (pngSignature === buffer.toString('ascii', 1, 8)) {
+    var chunkName = buffer.toString('ascii', 12, 16);
+    if (chunkName === pngFriedChunkName) {
+      chunkName = buffer.toString('ascii', 28, 32);
+    }
+    if (chunkName !== pngImageHeaderChunkName) {
+      throw new TypeError('invalid png');
+    }
+    return true;
+  }
+}
+
+function calculate (buffer) {
+  if (buffer.toString('ascii', 12, 16) === pngFriedChunkName) {
+    return {
+      'width': buffer.readUInt32BE(32),
+      'height': buffer.readUInt32BE(36)
+    };
+  }
+  return {
+    'width': buffer.readUInt32BE(16),
+    'height': buffer.readUInt32BE(20)
+  };
+}
+
+module.exports = {
+  'detect': isPNG,
+  'calculate': calculate
+};

node_modules/image-size/lib/types/psd.js

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+'use strict';
+
+function isPSD (buffer) {
+  return ('8BPS' === buffer.toString('ascii', 0, 4));
+}
+
+function calculate (buffer) {
+  return {
+    'width': buffer.readUInt32BE(18),
+    'height': buffer.readUInt32BE(14)
+  };
+}
+
+module.exports = {
+  'detect': isPSD,
+  'calculate': calculate
+};

node_modules/image-size/lib/types/svg.js

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+'use strict';
+
+var svgReg = /<svg[^>]+[^>]*>/;
+function isSVG (buffer) {
+  return svgReg.test(buffer);
+}
+
+var extractorRegExps = {
+  'root': /<svg\s[^>]+>/,
+  'width': /\bwidth=(['"])([^%]+?)\1/,
+  'height': /\bheight=(['"])([^%]+?)\1/,
+  'viewbox': /\bviewBox=(['"])(.+?)\1/
+};
+
+function parseViewbox (viewbox) {
+  var bounds = viewbox.split(' ');
+  return {
+    'width': parseInt(bounds[2], 10),
+    'height': parseInt(bounds[3], 10)
+  };
+}
+
+function parseAttributes (root) {
+  var width = root.match(extractorRegExps.width);
+  var height = root.match(extractorRegExps.height);
+  var viewbox = root.match(extractorRegExps.viewbox);
+  return {
+    'width': width && parseInt(width[2], 10),
+    'height': height && parseInt(height[2], 10),
+    'viewbox': viewbox && parseViewbox(viewbox[2])
+  };
+}
+
+function calculateByDimensions (attrs) {
+  return {
+    'width': attrs.width,
+    'height': attrs.height
+  };
+}
+
+function calculateByViewbox (attrs) {
+  var ratio = attrs.viewbox.width / attrs.viewbox.height;
+  if (attrs.width) {
+    return {
+      'width': attrs.width,
+      'height': Math.floor(attrs.width / ratio)
+    };
+  }
+  if (attrs.height) {
+    return {
+      'width': Math.floor(attrs.height * ratio),
+      'height': attrs.height
+    };
+  }
+  return {
+    'width': attrs.viewbox.width,
+    'height': attrs.viewbox.height
+  };
+}
+
+function calculate (buffer) {
+  var root = buffer.toString('utf8').match(extractorRegExps.root);
+  if (root) {
+    var attrs = parseAttributes(root[0]);
+    if (attrs.width && attrs.height) {
+      return calculateByDimensions(attrs);
+    }
+    if (attrs.viewbox) {
+      return calculateByViewbox(attrs);
+    }
+  }
+  throw new TypeError('invalid svg');
+}
+
+module.exports = {
+  'detect': isSVG,
+  'calculate': calculate
+};

node_modules/image-size/lib/types/tiff.js

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+'use strict';
+
+// based on http://www.compix.com/fileformattif.htm
+// TO-DO: support big-endian as well
+
+var fs = require('fs');
+var readUInt = require('../readUInt');
+
+function isTIFF (buffer) {
+  var hex4 = buffer.toString('hex', 0, 4);
+  return ('49492a00' === hex4 || '4d4d002a' === hex4);
+}
+
+// Read IFD (image-file-directory) into a buffer
+function readIFD (buffer, filepath, isBigEndian) {
+
+  var ifdOffset = readUInt(buffer, 32, 4, isBigEndian);
+
+  // read only till the end of the file
+  var bufferSize = 1024;
+  var fileSize = fs.statSync(filepath).size;
+  if (ifdOffset + bufferSize > fileSize) {
+    bufferSize = fileSize - ifdOffset - 10;
+  }
+
+  // populate the buffer
+  var endBuffer = new Buffer(bufferSize);
+  var descriptor = fs.openSync(filepath, 'r');
+  fs.readSync(descriptor, endBuffer, 0, bufferSize, ifdOffset);
+
+  // var ifdLength = readUInt(endBuffer, 16, 0, isBigEndian);
+  var ifdBuffer = endBuffer.slice(2); //, 2 + 12 * ifdLength);
+  return ifdBuffer;
+}
+
+// TIFF values seem to be messed up on Big-Endian, this helps
+function readValue (buffer, isBigEndian) {
+  var low = readUInt(buffer, 16, 8, isBigEndian);
+  var high = readUInt(buffer, 16, 10, isBigEndian);
+  return (high << 16) + low;
+}
+
+// move to the next tag
+function nextTag (buffer) {
+  if (buffer.length > 24) {
+    return buffer.slice(12);
+  }
+}
+
+// Extract IFD tags from TIFF metadata
+function extractTags (buffer, isBigEndian) {
+  var tags = {};
+  var code, type, length;
+
+  while (buffer && buffer.length) {
+    code = readUInt(buffer, 16, 0, isBigEndian);
+    type = readUInt(buffer, 16, 2, isBigEndian);
+    length = readUInt(buffer, 32, 4, isBigEndian);
+
+    // 0 means end of IFD
+    if (code === 0) {
+      break;
+    } else {
+      // 256 is width, 257 is height
+      // if (code === 256 || code === 257) {
+      if (length === 1 && (type === 3 || type === 4)) {
+        tags[code] = readValue(buffer, isBigEndian);
+      }
+
+      // move to the next tag
+      buffer = nextTag(buffer);
+    }
+  }
+  return tags;
+}
+
+// Test if the TIFF is Big Endian or Little Endian
+function determineEndianness (buffer) {
+  var signature = buffer.toString('ascii', 0, 2);
+  if ('II' === signature) {
+    return 'LE';
+  } else if ('MM' === signature) {
+    return 'BE';
+  }
+}
+
+function calculate (buffer, filepath) {
+
+  if (!filepath) {
+    throw new TypeError('Tiff doesn\'t support buffer');
+  }
+
+  // Determine BE/LE
+  var isBigEndian = determineEndianness(buffer) === 'BE';
+
+  // read the IFD
+  var ifdBuffer = readIFD(buffer, filepath, isBigEndian);
+
+  // extract the tags from the IFD
+  var tags = extractTags(ifdBuffer, isBigEndian);
+
+  var width = tags[256];
+  var height = tags[257];
+
+  if (!width || !height) {
+    throw new TypeError('Invalid Tiff, missing tags');
+  }
+
+  return {
+    'width': width,
+    'height': height
+  };
+}
+
+module.exports = {
+  'detect': isTIFF,
+  'calculate': calculate
+};

node_modules/image-size/lib/types/webp.js

@@ -0,0 +1,69 @@
+'use strict';
+
+// based on https://developers.google.com/speed/webp/docs/riff_container
+
+function isWebP (buffer) {
+  var riffHeader = 'RIFF' === buffer.toString('ascii', 0, 4);
+  var webpHeader = 'WEBP' === buffer.toString('ascii', 8, 12);
+  var vp8Header  = 'VP8'  === buffer.toString('ascii', 12, 15);
+  return (riffHeader && webpHeader && vp8Header);
+}
+
+function calculate (buffer) {
+  var chunkHeader = buffer.toString('ascii', 12, 16);
+  buffer = buffer.slice(20, 30);
+
+  // Extended webp stream signature
+  if (chunkHeader === 'VP8X') {
+    var extendedHeader = buffer[0];
+    var validStart = (extendedHeader & 0xc0) === 0;
+    var validEnd = (extendedHeader & 0x01) === 0;
+    if (validStart && validEnd) {
+      return calculateExtended(buffer);
+    } else {
+      return false;
+    }
+  }
+
+  // Lossless webp stream signature
+  if (chunkHeader === 'VP8 ' && buffer[0] !== 0x2f) {
+    return calculateLossy(buffer);
+  }
+
+  // Lossy webp stream signature
+  var signature = buffer.toString('hex', 3, 6);
+  if (chunkHeader === 'VP8L' && signature !== '9d012a') {
+    return calculateLossless(buffer);
+  }
+
+  return false;
+}
+
+function calculateExtended (buffer) {
+  return {
+    'width': 1 + buffer.readUIntLE(4, 3),
+    'height': 1 + buffer.readUIntLE(7, 3)
+  }
+}
+
+function calculateLossless (buffer) {
+  return {
+    'width': 1 + (((buffer[2] & 0x3F) << 8) | buffer[1]),
+    'height': 1 + (((buffer[4] & 0xF) << 10) | (buffer[3] << 2) |
+                  ((buffer[2] & 0xC0) >> 6))
+  };
+}
+
+function calculateLossy (buffer) {
+  // `& 0x3fff` returns the last 14 bits
+  // TO-DO: include webp scaling in the calculations
+  return {
+    'width': buffer.readInt16LE(6) & 0x3fff,
+    'height': buffer.readInt16LE(8) & 0x3fff
+  };
+}
+
+module.exports = {
+  'detect': isWebP,
+  'calculate': calculate
+};

node_modules/image-size/package.json

@@ -0,0 +1,49 @@
+{
+  "name": "image-size",
+  "version": "0.5.5",
+  "description": "get dimensions of any image file",
+  "main": "lib/index.js",
+  "files": [
+    "bin",
+    "lib"
+  ],
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "bin": {
+    "image-size": "bin/image-size.js"
+  },
+  "scripts": {
+    "pretest": "jshint",
+    "test": "mocha specs",
+    "coverage": "istanbul cover _mocha specs"
+  },
+  "repository": "image-size/image-size",
+  "keywords": [
+    "image",
+    "size",
+    "dimensions",
+    "resolution",
+    "width",
+    "height",
+    "png",
+    "jpeg",
+    "bmp",
+    "gif",
+    "psd",
+    "tiff",
+    "webp",
+    "svg"
+  ],
+  "author": "netroy <aditya@netroy.in> (http://netroy.in/)",
+  "license": "MIT",
+  "devDependencies": {
+    "escomplex-js": "^1.2.0",
+    "expect.js": "^0.3.1",
+    "glob": "^7.1.1",
+    "istanbul": "^1.1.0-alpha.1",
+    "jshint": "^2.9.4",
+    "mocha": "^3.4.1",
+    "sinon": "^2.2.0"
+  }
+}