mirror of https://github.com/espruino/BangleApps
99 lines
2.9 KiB
JavaScript
Executable File
99 lines
2.9 KiB
JavaScript
Executable File
#!/usr/bin/nodejs
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/*
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Mashes together a bunch of different apps into a big binary blob.
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We then store this *inside* the Bangle.js firmware and can use it
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to populate Storage initially.
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Bangle.js 1 doesn't really have anough flash space for this,
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but we have enough on v2.
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*/
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var SETTINGS = {
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pretokenise : true
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};
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var path = require('path');
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var ROOTDIR = path.join(__dirname, '..');
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var APPDIR = ROOTDIR+'/apps';
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var APPJSON = ROOTDIR+'/apps.json';
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var OUTFILE = path.join(ROOTDIR, '../Espruino/libs/banglejs/banglejs2_storage_default.c');
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var APPS = [ // IDs of apps to install
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"boot","launchb2","s7clk","setting",
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"about","alarm","widlock","widbat","widbt"
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];
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var MINIFY = true;
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var fs = require("fs");
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global.Const = {
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/* Are we only putting a single app on a device? If so
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apps should all be saved as .bootcde and we write info
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about the current app into app.info */
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SINGLE_APP_ONLY : false,
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};
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var AppInfo = require(ROOTDIR+"/core/js/appinfo.js");
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var appjson = JSON.parse(fs.readFileSync(APPJSON).toString());
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var appfiles = [];
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function fileGetter(url) {
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console.log("Loading "+url)
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if (MINIFY) {
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if (url.endsWith(".json")) {
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var f = url.slice(0,-5);
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console.log("MINIFYING JSON "+f);
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var j = eval("("+fs.readFileSync(url).toString("binary")+")");
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var code = JSON.stringify(j);
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//console.log(code);
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url = f+".min.json";
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fs.writeFileSync(url, code);
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}
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}
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return Promise.resolve(fs.readFileSync(url).toString("binary"));
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}
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Promise.all(APPS.map(appid => {
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var app = appjson.find(app=>app.id==appid);
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if (app===undefined) throw new Error(`App ${appid} not found`);
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return AppInfo.getFiles(app, {
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fileGetter : fileGetter,
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settings : SETTINGS
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}).then(files => {
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appfiles = appfiles.concat(files);
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});
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})).then(() => {
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// work out what goes in storage
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var storageContent = "";
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appfiles.forEach((file) => {
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var fileLength = file.content.length;
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console.log(file.name+" -> "+fileLength+"b");
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// set up header
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var header = new Uint8Array(32);
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header.fill(0);
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header.set([fileLength,fileLength>>8,fileLength>>16,fileLength>>24],0); // length
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for (var i=0;i<file.name.length;i++)
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header[4+i] = file.name.charCodeAt(i);
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// add header and file content
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storageContent += String.fromCharCode.apply(String, header);
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storageContent += file.content;
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// pad length
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while (fileLength&3) {
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storageContent += "\xff";
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fileLength++;
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}
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});
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// work out file contents
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var cfile = `// Initial storage contents for Bangle.js 2.0
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// Generated by BangleApps/bin/build_bangles_c.js
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const int jsfStorageInitialContentLength = ${storageContent.length};
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const char jsfStorageInitialContents[] = {
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`;
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for (var i=0;i<storageContent.length;i+=32) {
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var chunk = storageContent.substr(i,32);
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cfile += chunk.split("").map(c=>c.charCodeAt()).join(",")+",\n";
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}
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cfile += `};
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`;
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fs.writeFileSync(OUTFILE, cfile);
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console.log("Output written to "+OUTFILE);
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});
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