package aQute.lib.spring;
import java.io.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.regex.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import aQute.bnd.header.*;
import aQute.bnd.osgi.*;
import aQute.bnd.osgi.Descriptors.PackageRef;
import aQute.bnd.service.*;
/**
* This component is called when we find a resource in the META-INF/*.xml
* pattern. We parse the resource and and the imports to the builder. Parsing is
* done with XSLT (first time I see the use of having XML for the Spring
* configuration files!).
*
* @author aqute
*/
public class SpringComponent implements AnalyzerPlugin {
static Transformer transformer;
static Pattern SPRING_SOURCE = Pattern.compile("META-INF/spring/.*\\.xml");
static Pattern QN = Pattern.compile("[_A-Za-z$][_A-Za-z0-9$]*(\\.[_A-Za-z$][_A-Za-z0-9$]*)*");
public static Set<CharSequence> analyze(InputStream in) throws Exception {
if (transformer == null) {
TransformerFactory tf = TransformerFactory.newInstance();
Source source = new StreamSource(SpringComponent.class.getResourceAsStream("extract.xsl"));
transformer = tf.newTransformer(source);
}
Set<CharSequence> refers = new HashSet<CharSequence>();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
Result r = new StreamResult(bout);
Source s = new StreamSource(in);
transformer.transform(s, r);
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
bout.close();
BufferedReader br = new BufferedReader(new InputStreamReader(bin, "UTF8"));
String line = br.readLine();
while (line != null) {
line = line.trim();
if (line.length() > 0) {
String parts[] = line.split("\\s*,\\s*");
for (int i = 0; i < parts.length; i++) {
int n = parts[i].lastIndexOf('.');
if (n > 0) {
refers.add(parts[i].subSequence(0, n));
}
}
}
line = br.readLine();
}
br.close();
return refers;
}
public boolean analyzeJar(Analyzer analyzer) throws Exception {
Jar jar = analyzer.getJar();
Map<String,Resource> dir = jar.getDirectories().get("META-INF/spring");
if (dir == null || dir.isEmpty())
return false;
for (Iterator<Entry<String,Resource>> i = dir.entrySet().iterator(); i.hasNext();) {
Entry<String,Resource> entry = i.next();
String path = entry.getKey();
Resource resource = entry.getValue();
if (SPRING_SOURCE.matcher(path).matches()) {
try {
InputStream in = resource.openInputStream();
Set<CharSequence> set = analyze(in);
in.close();
for (Iterator<CharSequence> r = set.iterator(); r.hasNext();) {
PackageRef pack = analyzer.getPackageRef((String) r.next());
if (!QN.matcher(pack.getFQN()).matches())
analyzer.warning("Package does not seem a package in spring resource (" + path + "): "
+ pack);
if (!analyzer.getReferred().containsKey(pack))
analyzer.getReferred().put(pack, new Attrs());
}
}
catch (Exception e) {
analyzer.error("Unexpected exception in processing spring resources(" + path + "): " + e);
}
}
}
return false;
}
}