102 lines
4 KiB
Java
102 lines
4 KiB
Java
//JAVA 11+
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.net.URL;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
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import static java.nio.file.StandardOpenOption.CREATE;
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import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING;
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import static java.nio.file.StandardOpenOption.WRITE;
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class get_jreleaser {
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public static void main(String... args) throws Exception {
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// default version
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var version = "latest";
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if (args.length > 1) {
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System.err.println("Usage: java get_jreleaser.java [VERSION]");
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System.exit(1);
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}
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// grab the version if specified
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if (args.length == 1) {
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version = args[0];
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}
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// check
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if (null == version || version.isEmpty()) {
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System.out.printf("❌ Version '%s' is invalid%n", version);
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System.exit(1);
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}
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var versionFile = Path.of("JRELEASER_VERSION");
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var cachedVersion = "";
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if (Files.exists(versionFile)) {
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try {
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cachedVersion = Files.readString(versionFile).trim();
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} catch (IOException e) {
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System.out.printf("☠️ JReleaser %s could not be resolved%n", version);
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e.printStackTrace();
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System.exit(1);
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}
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}
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// resolve latest to a tagged release
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if ("latest".equalsIgnoreCase(version)) {
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var url = "https://jreleaser.org/releases/latest/download/VERSION";
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try (var stream = new URL(url).openStream()) {
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System.out.printf("✅ Located version marker%n");
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Files.copy(stream, versionFile, REPLACE_EXISTING);
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version = new String(Files.readAllBytes(versionFile)).trim();
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System.out.printf("✅ JReleaser latest resolves to %s%n", version);
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} catch (FileNotFoundException e) {
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System.out.printf("❌ JReleaser %s not found%n", version);
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e.printStackTrace();
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System.exit(1);
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} catch (IOException e) {
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System.out.printf("☠️ JReleaser %s could not be downloaded/copied%n", version);
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e.printStackTrace();
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System.exit(1);
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}
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} else {
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try {
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Files.writeString(versionFile, version, CREATE, TRUNCATE_EXISTING, WRITE);
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} catch (IOException e) {
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System.out.printf("☠️ JReleaser %s could not be resolved%n", version);
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e.printStackTrace();
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System.exit(1);
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}
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}
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var jreleaserJar = Path.of("jreleaser-cli.jar");
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if (version.equals(cachedVersion) && Files.exists(jreleaserJar)) {
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// assume jreleaserJar has the expected version for now
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System.out.printf("✅ JReleaser %s already downloaded%n", version);
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System.exit(0);
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}
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// setup the actual download
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var tag = !"early-access".equals(version) ? "v" + version : version;
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var url = "https://github.com/jreleaser/jreleaser/releases/download/" + tag + "/jreleaser-tool-provider-" + version + ".jar";
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try (var stream = new URL(url).openStream()) {
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System.out.printf("✅ Located JReleaser %s%n", version);
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System.out.printf("⬇️ Downloading %s%n", url);
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var size = Files.copy(stream, jreleaserJar, REPLACE_EXISTING);
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System.out.printf("%s << copied %d bytes%n", jreleaserJar, size);
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System.out.printf("✅ JReleaser installed successfully%n");
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} catch (FileNotFoundException e) {
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System.out.printf("❌ JReleaser %s not found%n", version);
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System.exit(1);
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} catch (IOException e) {
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System.out.printf("☠️ JReleaser %s could not be downloaded/copied%n", version);
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e.printStackTrace();
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System.exit(1);
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}
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}
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}
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