Merge branch 'json'

This branch cherry-picks a couple of improvements from
git-for-windows#12,
adding proper commit messages, and leaving the support for static URLs to
the original author (if still needed, given the suggestions to use the
GitHub API directly).

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

bump-version.js

@@ -47,20 +47,26 @@ var autoUpdate = function() {
 	};
 
 	var determineVersion = function(body) {
-		var lines = body.replace(/\n/gm, ',').split(',');
-		var tagName = lines.findFirst(/"tag_name": *"(.*)"/);
-		var regex = /^v(\d+\.\d+\.\d+(\.\d+)?)\.windows\.(\d+)$/;
-		var match = regex.exec(tagName);
-		var version = match[1];
-		if (parseInt(match[3]) > 1)
-			version += '(' + match[3] + ')';
-		var timestamp = lines.findFirst(/"published_at": *"(.*)"/);
-		regex = /^(\d+)-(\d+)-(\d+)T(\d+):(\d+):(\d+)Z$/;
-		match = regex.exec(timestamp);
-		var latest = new Date(match[1], match[2] - 1, match[3],
-			match[4], match[5], match[6], 0).toUTCString();
-		latest = latest.replace(/GMT$/, 'UTC');
-		var url = lines.findFirst(/"html_url": *"(.*)"/);
+		var release = JSON.parse(body),
+			versionRegex = /^v(\d+\.\d+\.\d+(\.\d+)?)\.windows\.(\d+)/,
+			timeRegex = /^(\d+)-(\d+)-(\d+)T(\d+):(\d+):(\d+)Z$/,
+			version = false,
+			match, latest, url;
+
+		if (match = release.tag_name.match(versionRegex)) {
+			version = match[1];
+
+			if (parseInt(match[3]) > 1) {
+				version += '(' + match[3] + ')';
+			}
+
+			match = release.published_at.match(timeRegex);
+			latest = new Date(match[1], match[2] - 1, match[3],
+				match[4], match[5], match[6], 0).toUTCString();
+			latest = latest.replace(/GMT$/, 'UTC');
+			url = release.html_url;
+		}
+
 		process.stderr.write('Auto-detected version ' + version
 			+ ' (' + latest + ')\n');
 		return [ version, latest, url ];
@@ -70,7 +76,7 @@ var autoUpdate = function() {
 	https.body = '';
 	https.get({
 		'hostname': 'api.github.com',
-		'path': '/repos/git-for-windows/git/releases',
+		'path': '/repos/git-for-windows/git/releases/latest',
 		'headers': {
 			'User-Agent': 'Git for Windows version updater'
 		}
@@ -94,4 +100,3 @@ else if (process.argv.length == 5)
 else
 	die('Usage: node ' + process.argv[1]
 		+ ' <version> <timestamp> <url>\n');
-