/* Title: Tools/Setup/isabelle/setup/Build_Scala.java
Author: Makarius
Build Isabelle/Scala modules.
*/
package isabelle.setup;
import java.io.File;
import java.io.IOException;
import java.math.BigInteger;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Comparator;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.stream.Stream;
public class Build_Scala
{
public static class Context
{
private final Path component_dir;
private Properties props;
public Context(Path dir) throws IOException
{
component_dir = dir;
props = new Properties();
Path path = component_dir.resolve("etc/scala.props");
if (Files.exists(path)) { props.load(Files.newBufferedReader(path)); }
}
@Override public String toString() { return component_dir.toString(); }
public String component_name() { return component_dir.toFile().getName(); }
public String name() { return props.getProperty("name", component_name()); }
public String description() { return props.getProperty("description", name()); }
public String lib_name() { return props.getProperty("lib", "lib") + "/" + name(); }
public String jar_name() { return lib_name() + ".jar"; }
public String shasum_name() { return lib_name() + ".shasum"; }
public String main() { return props.getProperty("main", ""); }
public String[] sources() { return props.getProperty("sources", "").split("\\s+"); }
public String[] resources() { return props.getProperty("resources", "").split("\\s+"); }
public String[] services() { return props.getProperty("services", "").split("\\s+"); }
public Path path(String file) { return component_dir.resolve(file); }
public boolean exists(String file) { return Files.exists(path(file)); }
public String resource_name(String s)
{
int i = s.indexOf(':');
return i > 0 ? s.substring(0, i) : s;
}
public String resource_target(String s)
{
int i = s.indexOf(':');
return i > 0 ? s.substring(i + 1) : s;
}
public String shasum(String file)
throws IOException, NoSuchAlgorithmException
{
if (exists(file)) {
MessageDigest sha = MessageDigest.getInstance("SHA");
sha.update(Files.readAllBytes(path(file)));
String digest = new BigInteger(1, sha.digest()).toString(16);
return digest + " *" + file + "\n";
}
else { return ""; }
}
}
public static void build_scala(Context context, boolean fresh)
throws IOException, InterruptedException, NoSuchAlgorithmException
{
String jar_name = context.jar_name();
String shasum_name = context.shasum_name();
String[] sources = context.sources();
String[] resources = context.resources();
if (sources.length == 0) {
Files.deleteIfExists(context.path(jar_name));
Files.deleteIfExists(context.path(shasum_name));
}
else {
String shasum_old =
context.exists(shasum_name) ? Files.readString(context.path(shasum_name)) : "";
String shasum_sources;
{
StringBuilder _shasum = new StringBuilder();
for (String s : sources) { _shasum.append(context.shasum(s)); }
for (String s : resources) {
_shasum.append(context.shasum(context.resource_name(s)));
}
shasum_sources = _shasum.toString();
}
if (fresh || !shasum_old.equals(context.shasum(jar_name) + shasum_sources)) {
System.out.println("### Building " + context.description() + " ...");
String java_home = Environment.getenv("JAVA_HOME");
String scala_home = Environment.getenv("SCALA_HOME");
String scalac_options = Environment.getenv("ISABELLE_SCALAC_OPTIONS");
String isabelle_class_path = Environment.getenv("ISABELLE_CLASSPATH");
if (java_home.isEmpty()) {
throw new RuntimeException("Unknown JAVA_HOME -- Java unavailable");
}
if (scala_home.isEmpty()) {
throw new RuntimeException("Unknown SCALA_HOME -- Scala unavailable");
}
Path build_dir = Files.createTempDirectory("isabelle");
try {
/* classpath */
List<String> classpath = new LinkedList<String>();
for (String s : isabelle_class_path.split(":", -1)) {
classpath.add(Environment.platform_path(s));
}
Map<String,String> env = new HashMap<String,String>(Environment.settings());
env.put("CLASSPATH", String.join(File.pathSeparator, classpath));
/* compile sources */
List<String> cmd = new LinkedList<String>();
Environment.Exec_Result res;
cmd.add(Environment.platform_path(scala_home + "/bin/scalac"));
for (String s : scalac_options.split("\\s+")) { cmd.add(s); }
cmd.add("-d");
cmd.add(build_dir.toString());
for (String s : sources) { cmd.add(context.path(s).toString()); }
res = Environment.exec_process(cmd, build_dir.toFile(), env, false);
if (!res.ok()) throw new RuntimeException(res.err());
/* copy resources */
for (String s : context.resources()) {
String name = context.resource_name(s);
String target = context.resource_target(s);
Path file_name = Path.of(name).normalize().getFileName();
Path target_path = Path.of(target).normalize();
Path target_dir;
Path target_file;
{
if (target.endsWith("/") || target.endsWith("/.")) {
target_dir = build_dir.resolve(target_path);
target_file = target_dir.resolve(file_name);
}
else {
target_file = build_dir.resolve(target_path);
target_dir = target_file.getParent();
}
}
Files.createDirectories(target_dir);
Files.copy(context.path(name), target_file,
StandardCopyOption.COPY_ATTRIBUTES);
}
/* jar */
cmd.clear();
cmd.add(Environment.platform_path(java_home + "/bin/jar"));
cmd.add("-c");
cmd.add("-f");
cmd.add(context.path(jar_name).toString());
if (!context.main().isEmpty()) {
cmd.add("-e");
cmd.add(context.main());
}
cmd.add(".");
res = Environment.exec_process(cmd, build_dir.toFile(), env, false);
if (!res.ok()) throw new RuntimeException(res.err());
/* shasum */
String shasum = context.shasum(jar_name) + shasum_sources;
Files.writeString(context.path(shasum_name), shasum);
}
finally {
try (Stream<Path> walk = Files.walk(build_dir)) {
walk.sorted(Comparator.reverseOrder())
.map(Path::toFile)
.forEach(File::delete);
}
}
}
}
}
}