Use git rev as semver metadata

Jakefile.js

@@ -14,7 +14,7 @@ For a custom build, open build/build.html in the browser and follow the instruct
 
 var build = require('./build/build.js'),
     buildDocs = require('./build/docs'),
-    version = require('./src/Leaflet.js').version;
+    git = require('git-rev');
 
 function hint(msg, args) {
 	return function () {
@@ -27,6 +27,21 @@ function hint(msg, args) {
 	};
 }
 
+// Returns the version string in package.json, plus a semver build metadata if
+// this is not an official release
+function calculateVersion(officialRelease, callback) {
+
+	var version = require('./package.json').version;
+
+	if (officialRelease) {
+		callback(version);
+	} else {
+		git.short(function(str) {
+			callback (version + '+' + str);
+		});
+	}
+}
+
 desc('Check Leaflet source for errors with ESLint');
 task('lint', {async: true}, hint('Checking for JS errors...', 'src --config .eslintrc'));
 
@@ -34,16 +49,9 @@ desc('Check Leaflet specs source for errors with ESLint');
 task('lintspec', {async: true}, hint('Checking for specs JS errors...', 'spec/suites --config spec/.eslintrc'));
 
 desc('Combine and compress Leaflet source files');
-task('build', {async: true}, function (compsBase32, buildName) {
-	var v;
-
-	jake.exec('git log -1 --pretty=format:"%h"', {breakOnError: false}, function () {
+task('build', {async: true}, function (compsBase32, buildName, officialRelease) {
+	calculateVersion(officialRelease, function(v){
 		build.build(complete, v, compsBase32, buildName);
-
-	}).on('stdout', function (data) {
-		v = version + ' (' + data.toString() + ')';
-	}).on('error', function () {
-		v = version;
 	});
 });
 

build/build.js

@@ -70,13 +70,23 @@ function loadSilently(path) {
 	}
 }
 
-function bundleFiles(files, copy) {
+// Concatenate the files while building up a sourcemap for the concatenation,
+// and replace the line defining L.version with the string prepared in the jakefile
+function bundleFiles(files, copy, version) {
 	var node = new SourceNode(null, null, null, '');
 
 	node.add(new SourceNode(null, null, null, copy + '(function (window, document, undefined) {'));
 
 	for (var i = 0, len = files.length; i < len; i++) {
 		var contents = fs.readFileSync(files[i], 'utf8');
+
+		if (files[i] === 'src/Leaflet.js') {
+			contents = contents.replace(
+				new RegExp('version: \'.*\''),
+				'version: ' + JSON.stringify(version)
+			);
+		}
+
 		var lines = contents.split('\n');
 		var lineCount = lines.length;
 		var fileNode = new SourceNode(null, null, null, '');
@@ -119,7 +129,7 @@ exports.build = function (callback, version, compsBase32, buildName) {
 	    srcFilename = filenamePart + '-src.js',
 	    mapFilename = filenamePart + '-src.map',
 
-	    bundle = bundleFiles(files, copy),
+	    bundle = bundleFiles(files, copy, version),
 	    newSrc = bundle.src + '\n//# sourceMappingURL=' + mapFilename,
 
 	    oldSrc = loadSilently(srcPath),

build/publish.sh

@@ -8,7 +8,7 @@ npm test || exit 1
 
 git checkout -b build
 
-npm run build
+jake build[,,true]
 git add dist/leaflet-src.js dist/leaflet.js dist/leaflet-src.map -f
 
 git commit -m "v$VERSION"

package.json

@@ -5,6 +5,7 @@
   "devDependencies": {
     "eslint": "^2.8.0",
     "eslint-config-mourner": "^2.0.1",
+    "git-rev": "^0.2.1",
     "happen": "~0.3.1",
     "jake": "~8.0.12",
     "karma": "~0.13.22",

src/Leaflet.js

@@ -1,6 +1,6 @@
 
 var L = {
-	version: '1.0.0-rc.1'
+	version: 'dev'
 };
 
 function expose() {