Implement conversion to ico for windows target

bin/convertToIco

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+# USAGE
+
+# ./convertToIco <input png or ico> <outfilename>.ico
+# Example
+# ./convertToPng ~/sample.png ~/converted.ico
+
+set -e
+
+IMAGEMAGICK_CONVERT=$(which convert)
+IMAGEMAGICK_IDENTIFY=$(which identify)
+
+if [ ! -x "${IMAGEMAGICK_CONVERT}" ]; then
+	echo "Cannot find required ImageMagick Convert executable" >&2
+	exit 1;
+fi
+if [ ! -x "${IMAGEMAGICK_IDENTIFY}" ]; then
+	echo "Cannot find required ImageMagick Identify executable" >&2
+	exit 1;
+fi
+
+SOURCE=$1
+DEST=$2
+
+if [ -z "${SOURCE}" ]; then
+	echo "No source image specified"
+	exit 1
+fi
+
+if [ -z "${DEST}" ]; then
+	echo "No destination specified"
+	exit 1
+fi
+
+NAME=$(basename "${SOURCE}")
+EXT="${NAME##*.}"
+BASE="${NAME%.*}"
+
+if [ "${EXT}" == "ico" ]; then
+    cp "${SOURCE}" "${DEST}"
+    exit 0
+fi
+
+convert "${SOURCE}" "${DEST}"

src/build/iconBuild.js

@@ -3,7 +3,7 @@ import helpers from './../helpers/helpers';
 import iconShellHelpers from './../helpers/iconShellHelpers';
 
 const {isOSX} = helpers;
-const {convertToPng, convertToIcns} = iconShellHelpers;
+const {convertToPng, convertToIco, convertToIcns} = iconShellHelpers;
 
 /**
  * @callback augmentIconsCallback
@@ -30,11 +30,20 @@ function iconBuild(options, callback) {
     }
 
     if (options.platform === 'win32') {
-        if (!iconIsIco(options.icon)) {
-            console.warn('Icon should be an .ico to package for Windows');
+        if (iconIsIco(options.icon)) {
+            returnCallback();
+            return;
         }
 
-        returnCallback();
+        convertToIco(options.icon)
+            .then(outPath => {
+                options.icon = outPath;
+                returnCallback();
+            })
+            .catch(error => {
+                console.warn('Skipping icon conversion to .ico', error);
+                returnCallback();
+            });
         return;
     }
 

src/helpers/iconShellHelpers.js

@@ -9,6 +9,7 @@ tmp.setGracefulCleanup();
 const SCRIPT_PATHS = {
     singleIco: path.join(__dirname, '../..', 'bin/singleIco'),
     convertToPng: path.join(__dirname, '../..', 'bin/convertToPng'),
+    convertToIco: path.join(__dirname, '../..', 'bin/convertToIco'),
     convertToIcns: path.join(__dirname, '../..', 'bin/convertToIcns')
 };
 
@@ -58,6 +59,10 @@ function convertToPng(icoSrc) {
     return iconShellHelper(SCRIPT_PATHS.convertToPng, icoSrc, `${getTmpDirPath()}/icon.png`);
 }
 
+function convertToIco(icoSrc) {
+    return iconShellHelper(SCRIPT_PATHS.convertToIco, icoSrc, `${getTmpDirPath()}/icon.ico`);
+}
+
 function convertToIcns(icoSrc) {
     if (!isOSX()) {
         return new Promise((resolve, reject) => reject('OSX is required to convert to a .icns icon'));
@@ -68,5 +73,6 @@ function convertToIcns(icoSrc) {
 export default {
     singleIco,
     convertToPng,
+    convertToIco,
     convertToIcns
 };