objj-runtime
Version:
JavaScript (ECMAScript) and Objective-J runtime
114 lines (91 loc) • 4.03 kB
JavaScript
var FILE = require("file");
var MD5 = require("md5");
var FileList = require("jake").FileList;
var BundleTask = require("objective-j/jake/bundletask").BundleTask;
exports.generateManifest = function(productPath, options)
{
options = options || {};
indexFilePath = options.index || FILE.join(productPath, "index.html");
if (!FILE.isFile(indexFilePath)) {
print("Warning: Skipping cache manifest generation, no index file at "+indexFilePath);
return;
}
var index = FILE.read(indexFilePath, { charset : "UTF-8" });
var manifestName = "app.manifest";
var manifestPath = FILE.join(productPath, manifestName);
var manifestAttribute = 'manifest="'+manifestName+'"';
print("Generating cache manifest: " + manifestPath);
var manifestOut = FILE.open(manifestPath, "w", { charset : "UTF-8" });
manifestOut.print("CACHE MANIFEST");
manifestOut.print("");
manifestOut.print("CACHE:");
var list = new FileList(FILE.join(productPath, "**", "*"));
list.exclude(manifestPath);
list.exclude("**/.DS_Store", "**/.htaccess");
list.exclude("**/LICENSE");
list.exclude("**/MHTML*");
list.exclude("**/CommonJS.environment/*");
list.exclude("**/*.cur"); // FIXME: sprite these?
// FIXME: bleh. heuristic for whether index file includes debug frameworks
if (index.indexOf('"Frameworks/Debug"') < 0)
list.exclude("**/Frameworks/Debug/*");
if (options.exclude)
options.exclude.forEach(list.exclude.bind(list));
list.forEach(function(path) {
if (FILE.isFile(path)) {
var relative = FILE.relative(productPath, path);
// FIXME: check the actual sprited images file
// check index for references to file (for spinner.gif, etc)
if (BundleTask.isSpritable(path) && index.indexOf(relative) < 0)
return;
// include hash of each file in comments to expire when any file changes
var hash = MD5.hash(FILE.read(path, "b")).decodeToString("base16");
manifestOut.print("# " + hash);
manifestOut.print(relative);
}
});
manifestOut.print("");
manifestOut.print("NETWORK:");
manifestOut.print("*");
manifestOut.close();
// Insert "manifest" attribute in <html> tag of index file
var matchTag = index.match(/<html[^>]*>/i);
if (matchTag) {
var htmlTag = matchTag[0];
var newHTMLTag = null;
var matchAttr = htmlTag.match(/manifest\s*=\s*"([^"]*)"/i);
if (matchAttr) {
if (matchAttr[1] !== manifestName) {
newHTMLTag = htmlTag.replace(matchAttr[0], manifestAttribute);
}
} else {
newHTMLTag = htmlTag.replace(/>$/, " "+manifestAttribute+">");
}
if (newHTMLTag) {
print("Replacing html tag: \n " + htmlTag + "\nwith:\n " + newHTMLTag);
var newIndex = index.replace(htmlTag, newHTMLTag);
if (newIndex === index) {
print("Warning: No change!");
} else {
FILE.write(indexFilePath, newIndex, { charset : "UTF-8" });
}
}
}
else {
print("Warning: Couldn't find <html> tag in "+indexFilePath);
}
// Add Content-Type "text/cache-manifest" for manifest file to .htaccess
// This allows manifests to work out of the box on Apache (if htaccess overrides are allowed)
var htaccessPath = FILE.join(productPath, ".htaccess");
var htaccess = FILE.isFile(htaccessPath) ? FILE.read(htaccessPath, { charset : "UTF-8" }) : "";
var htaccessOut = FILE.open(htaccessPath, "w", { charset : "UTF-8" });
htaccessOut.print(htaccess);
var openTag = "<Files "+manifestName+">";
if (htaccess.indexOf(openTag) < 0) {
htaccessOut.print("");
htaccessOut.print(openTag);
htaccessOut.print("\tHeader set Content-Type text/cache-manifest");
htaccessOut.print("</Files>");
}
htaccessOut.close();
}