feat: Switch to sharp.

Close #3.

index.js

@@ -1,77 +1,9 @@
-'use strict'
-var icons = require('@randy.tarampi/android-icons')
-var lwip = require('@randy.tarampi/lwip')
-var path = require('path')
-var colors = require('colors')
+const icons = require('@randy.tarampi/android-icons')
+const { errorMessage, iconsGenerator: generator } = require('@randy.tarampi/generic-icon-splash-generate')
 
-function openImage (path) {
-  return new Promise(function (resolve, reject) {
-    lwip.open(path, function (err, image) {
-      if (err) {
-        reject(err)
-      }
-      resolve(image)
-    })
-  })
-}
-
-function clone (image) {
-  return new Promise(function (resolve, reject) {
-    image.clone(function (err, clone) {
-      if (err) {
-        reject(err)
-      }
-      resolve(clone)
-    })
-  })
-}
-
-function resize (icon, image) {
-  return new Promise(function (resolve, reject) {
-    image.resize(icon.width, function (err, resized) {
-      if (err) return reject(err)
-      resolve(resized)
-    })
-  })
-}
-
-function writeFile (path, image) {
-  return new Promise(function (resolve, reject) {
-    image.writeFile(path, function (err) {
-      if (err) return reject(err)
-      resolve(path)
-    })
-  })
-}
-
-function successMessage (icon, output, path) {
-  return console.info(colors.green('OK'), 'Image resized to', icon.width, 'x', icon.width, 'and written to', path)
-}
-
-function errorMessage (e) {
-  var message = typeof e === 'string' ? e : (e.msg || e.message)
-  console.error(colors.red('ERROR.'), message)
-}
-
-function transformAll (icons, output, image) {
-  return Promise.all(icons
-    .map(transform.bind(null, image, output))
-  )
-}
-
-function transform (image, output, icon) {
-  var out = output ? path.join(output, icon.name) : false
-  return clone(image)
-    .then(resize.bind(null, icon))
-    .then(writeFile.bind(null, out))
-    .then(successMessage.bind(null, icon, output))
-    .catch(errorMessage)
-}
-
-module.exports = function (input, output) {
+module.exports = (input, output = process.cwd()) => {
   if (!input) {
     errorMessage(new Error('`input` parameter is required.'))
   }
-  output = output || process.cwd()
-  return openImage(input).then(transformAll.bind(null, icons(), output))
+  return generator(icons(), input, output)
 }