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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa;
import java.io.*;
import java.util.HashMap;
import java.util.Map;
/**
* This class generates a java class based on the vtag.map file generated by dist/getversion.pl
*/
public class VersionTagger {
public static final String V_TAG_PKG = "V_TAG_PKG";
VersionTagger() throws IOException {
}
private static void printUsage(PrintStream out) {
out.println("Usage: java VersionTagger vtagmap pkgname outputdir");
}
public static void main(String[] args) {
if (args.length < 3) {
printUsage(System.err);
throw new RuntimeException("bad arguments to main(): vtag.map packageName outputDirectory [outputFormat (simple or vtag)]");
}
try {
VersionTagger me = new VersionTagger();
me.runProgram(args);
} catch (Exception e) {
System.err.println(e);
printUsage(System.err);
throw new RuntimeException(e);
}
}
private Map<String, String> readVtagMap(String path) {
Map<String, String> map = new HashMap<>();
try {
BufferedReader in = new BufferedReader(new FileReader(path));
String line;
while ((line = in.readLine()) != null) {
String elements[] = line.split("\\s+", 2);
map.put(elements[0], elements[1]);
}
} catch (FileNotFoundException e) {
// Use default values
map.put("V_TAG", "NOTAG");
map.put("V_TAG_DATE", "NOTAG");
map.put("V_TAG_PKG", "6.9999.0");
map.put("V_TAG_ARCH", "NOTAG");
map.put("V_TAG_SYSTEM", "NOTAG");
map.put("V_TAG_SYSTEM_REV", "NOTAG");
map.put("V_TAG_BUILDER", "NOTAG");
map.put("V_TAG_COMPONENT", "6.9999.0");
} catch (IOException e) {
throw new RuntimeException(e);
}
return map;
}
private enum Format {
SIMPLE,
VTAG
}
void runProgram(String[] args) throws IOException, InterruptedException {
String vtagmapPath = args[0];
String packageName = args[1];
String dirName = args[2] + "/" + packageName.replaceAll("\\.", "/");
Format format = args.length >= 4 ? Format.valueOf(args[3].toUpperCase()) : Format.SIMPLE;
File outDir = new File(dirName);
if (!outDir.isDirectory() && !outDir.mkdirs()) {
throw new IOException("could not create directory " + outDir);
}
String className = format == Format.SIMPLE ? "VespaVersion" : "Vtag";
String outFile = dirName + "/" + className +".java";
FileOutputStream out = new FileOutputStream(outFile);
OutputStreamWriter writer = new OutputStreamWriter(out);
System.err.println("generating: " + outFile);
Map<String, String> vtagMap = readVtagMap(vtagmapPath);
writer.write(String.format("package %s;\n\n", packageName));
if (format == Format.VTAG) {
writer.write("import com.yahoo.component.Version;\n");
}
writer.write(String.format("public class %s {\n", className));
if (!vtagMap.containsKey(V_TAG_PKG)) {
throw new RuntimeException("V_TAG_PKG not present in map file");
}
switch (format) {
case SIMPLE:
String version = vtagMap.get(V_TAG_PKG);
String elements[] = version.split("\\.");
writer.write(String.format(" public static final int major = %s;\n", elements[0]));
writer.write(String.format(" public static final int minor = %s;\n", elements[1]));
writer.write(String.format(" public static final int micro = %s;\n", elements[2]));
break;
case VTAG:
vtagMap.forEach((key, value) -> {
try {
writer.write(String.format(" public static final String %s = \"%s\";\n", key, value));
} catch (IOException e) {
throw new RuntimeException(e);
}
});
writer.write(" public static final Version currentVersion = new Version(V_TAG_COMPONENT);\n");
break;
}
writer.write("}\n");
writer.close();
}
}
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