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import java.io.*;
public class GetSourceInfo {
public static void main(String args[]) {
File topSrcDir = new File(".");
String revision = GetSourceInfo.getRevision(topSrcDir);
String branch = GetSourceInfo.getBranch(topSrcDir);
if (args.length != 0) {
if (args[0].equals("revision")) {
System.out.println(revision);
return;
} else if (args[0].equals("branch")) {
System.out.println(branch);
return;
} else if (args[0].equals("update")) {
GetSourceInfo.update(topSrcDir, revision, branch);
return;
}
}
System.out.println("Usage: java GetSourceInfo [revision | branch | update]");
}
// Update jst/SourceInfo.java
public static void update(File topSrcDir, String revision, String branch) {
File targetFile = new File(topSrcDir, "src/com/fluendo/jst/SourceInfo.java");
// If branch and revision are unknown, and the file already exists, leave it
if (branch.equals("(unknown)") && revision.equals("(unknown)") && targetFile.exists())
{
System.out.println("Unknown revision information, leaving existing file");
return;
}
if ( ! (new File(topSrcDir, ".svn")).exists() ) {
System.out.println("No top-level .svn directory, leaving file alone.");
return;
}
System.out.println("Updating SourceInfo file, branch " + branch + ", revision " + revision);
try {
FileWriter fw = new FileWriter(targetFile);
fw.write(
"package com.fluendo.jst;\n" +
"\n" +
"public class SourceInfo\n" +
"{\n" +
" public String revision = \"" + revision + "\";\n" +
" public String branch = \"" + branch + "\";\n" +
"\n" +
" public SourceInfo() {\n" +
" }\n" +
"}\n"
);
fw.close();
} catch (IOException e) {
System.out.println("Error: Unable to write to SourceInfo.java: " + e.getLocalizedMessage());
}
}
public static String getBranch(File topSrcDir) {
return "Wikimedia";
}
public static String getRevision(File topSrcDir) {
// Code here is based on MediaWiki's SpecialVersion::getSvnRevision(),
// except that it only works with 1.4+, because I couldn't be bothered
// working out how to read that XML file in Java. [TS]
String revision = "(unknown)";
try {
FileReader fr = new FileReader(new File(topSrcDir, ".svn/entries"));
LineNumberReader lnr = new LineNumberReader(fr);
String line = lnr.readLine();
if (!line.startsWith("<?xml")) {
// Subversion 1.4+
lnr.readLine();
lnr.readLine();
line = lnr.readLine();
try {
Integer intRev = new Integer(Integer.parseInt(line.trim()));
revision = "r" + intRev.toString();
} catch(NumberFormatException e) {
System.out.println("Invalid format for .svn/entries, unable to determine revision");
}
} else {
System.out.println("Erorr: Unable to interpret old subversion working copies");
}
} catch (IOException e) {
System.out.println("Error reading .svn/entries: " + e.getLocalizedMessage());
}
return revision;
}
}
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