Replace build.sh with node build script

Author: simonbengtsson

build.js

@@ -0,0 +1,82 @@
+var fs = require('fs');
+var uglify = require('uglify-js');
+var execSync = require('child_process').execSync;
+
+var paths = {
+    adler: 'node_modules/adler32cs/adler32cs.js',
+    fileSaver: 'node_modules/filesaver.js/FileSaver.js',
+    adlerTmp: 'adler.tmp.js',
+    fileSaverTmp: 'filesaver.tmp.js',
+    minified: 'dist/jspdf.min.js',
+    debug: 'dist/jspdf.debug.js'
+};
+
+var libs = [
+    'node_modules/cf-blob.js/Blob.js',
+    paths.fileSaverTmp,
+    paths.adlerTmp,
+    'libs/css_colors.js',
+    'libs/deflate.js',
+    'libs/html2canvas/dist/html2canvas.js',
+    'libs/png_support/png.js',
+    'libs/png_support/zlib.js',
+    'libs/polyfill.js'
+];
+var files = execSync('find plugins/*.js').toString().trim().split(/\n/);
+files.unshift('jspdf.js');
+
+monkeyPatch();
+bundle();
+
+fs.unlink(paths.adlerTmp);
+fs.unlink(paths.fileSaverTmp);
+
+// Monkey patching adler32 and filesaver
+function monkeyPatch() {
+    var adler = fs.readFileSync(paths.adler).toString();
+    adler = adler.replace(/this, function/g, 'jsPDF, function');
+    adler = adler.replace(/typeof define/g, '0');
+    fs.writeFileSync(paths.adlerTmp, adler);
+
+    var fileSaverCode = fs.readFileSync(paths.fileSaver).toString();
+    fileSaverCode = fileSaverCode.replace(/define !== null\) && \(define.amd != null/g, '0');
+    fs.writeFileSync(paths.fileSaverTmp, fileSaverCode);
+}
+
+function bundle() {
+    var debug = execSync('cat ' + files.join(' ') + ' ' + libs.join(' ')).toString().trim();
+    fs.writeFileSync(paths.debug, renew(debug));
+
+    var licences = extractLicences();
+    var minifed = uglify.minify(files.concat(libs), {wrap: 'jspdf-exports'});
+    fs.writeFileSync(paths.minified, renew('' + licences + minifed.code));
+}
+
+function renew(code) {
+    var date = new Date().toISOString();
+    var version = require('./package.json').version;
+    var whoami = execSync('whoami').toString().trim();
+    var commit = execSync('git rev-parse --short=10 HEAD').toString().trim();
+
+    code = code.replace('${versionID}', version + ' Built on ' + date);
+    code = code.replace('${commitID}', commit);
+    code = code.replace(/1\.0\.0-trunk/, version + ' ' + date + ':' + whoami);
+
+    return code;
+}
+
+function extractLicences() {
+    var licences = '';
+
+    files.concat(libs).forEach(function(file) {
+        var commentFilter = " | sed -n -e '1,/\\*\\//p' | sed -e 's/\\s*@preserve/ /' | grep -v *global";
+        if (file !== 'jspdf.js') {
+            commentFilter += " | sed -e '/Permission/,/SOFTWARE\\./c \\'";
+        }
+
+        var lic = execSync("awk '/^\\/\\*/,/\\*\\//' " + file + commentFilter).toString();
+        licences += lic.replace(/^\s*\n/gm, '');
+    });
+
+    return licences;
+}

package.json

@@ -26,7 +26,7 @@
   },
   "scripts": {
     "start": "ws",
-    "build": "npm install && bower install && ./build.sh",
+    "build": "npm install && bower install && node build.js",
     "version": "npm run build && git add -A dist"
   }
 }