in blocks/cocoon-xsp/cocoon-xsp-impl/src/main/java/org/apache/cocoon/components/language/programming/java/EclipseJavaCompiler.java [160:437]
public boolean compile() throws IOException {
final String targetClassName = makeClassName(sourceFile);
final ClassLoader classLoader = ClassUtils.getClassLoader();
String[] fileNames = new String[] {sourceFile};
String[] classNames = new String[] {targetClassName};
class CompilationUnit implements ICompilationUnit {
String className;
String sourceFile;
CompilationUnit(String sourceFile, String className) {
this.className = className;
this.sourceFile = sourceFile;
}
public char[] getFileName() {
return className.toCharArray();
}
public char[] getContents() {
char[] result = null;
FileReader fr = null;
try {
fr = new FileReader(sourceFile);
final Reader reader = new BufferedReader(fr);
try {
if (reader != null) {
char[] chars = new char[8192];
StringBuffer buf = new StringBuffer();
int count;
while ((count = reader.read(chars, 0, chars.length)) > 0) {
buf.append(chars, 0, count);
}
result = new char[buf.length()];
buf.getChars(0, result.length, result, 0);
}
} finally {
reader.close();
}
} catch (IOException e) {
handleError(className, -1, -1, e.getMessage());
}
return result;
}
public char[] getMainTypeName() {
int dot = className.lastIndexOf('.');
if (dot > 0) {
return className.substring(dot + 1).toCharArray();
}
return className.toCharArray();
}
public char[][] getPackageName() {
StringTokenizer izer = new StringTokenizer(className, ".");
char[][] result = new char[izer.countTokens()-1][];
for (int i = 0; i < result.length; i++) {
String tok = izer.nextToken();
result[i] = tok.toCharArray();
}
return result;
}
}
final INameEnvironment env = new INameEnvironment() {
public NameEnvironmentAnswer findType(char[][] compoundTypeName) {
StringBuffer result = new StringBuffer();
for (int i = 0; i < compoundTypeName.length; i++) {
if (i > 0) {
result.append(".");
}
result.append(compoundTypeName[i]);
}
return findType(result.toString());
}
public NameEnvironmentAnswer findType(char[] typeName, char[][] packageName) {
StringBuffer result = new StringBuffer();
for (int i = 0; i < packageName.length; i++) {
if (i > 0) {
result.append(".");
}
result.append(packageName[i]);
}
result.append(".");
result.append(typeName);
return findType(result.toString());
}
private NameEnvironmentAnswer findType(String className) {
try {
if (className.equals(targetClassName)) {
ICompilationUnit compilationUnit =
new CompilationUnit(sourceFile, className);
return
new NameEnvironmentAnswer(compilationUnit, null);
}
String resourceName =
className.replace('.', '/') + ".class";
InputStream is =
classLoader.getResourceAsStream(resourceName);
if (is != null) {
byte[] classBytes;
byte[] buf = new byte[8192];
ByteArrayOutputStream baos =
new ByteArrayOutputStream(buf.length);
int count;
while ((count = is.read(buf, 0, buf.length)) > 0) {
baos.write(buf, 0, count);
}
baos.flush();
classBytes = baos.toByteArray();
char[] fileName = className.toCharArray();
ClassFileReader classFileReader =
new ClassFileReader(classBytes, fileName,
true);
return
new NameEnvironmentAnswer(classFileReader, null);
}
} catch (IOException exc) {
handleError(className, -1, -1,
exc.getMessage());
} catch (org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException exc) {
handleError(className, -1, -1,
exc.getMessage());
}
return null;
}
private boolean isPackage(String result) {
if (result.equals(targetClassName)) {
return false;
}
String resourceName = result.replace('.', '/') + ".class";
InputStream is =
classLoader.getResourceAsStream(resourceName);
return is == null;
}
public boolean isPackage(char[][] parentPackageName, char[] packageName) {
StringBuffer result = new StringBuffer();
if (parentPackageName != null) {
for (int i = 0; i < parentPackageName.length; i++) {
if (i > 0) {
result.append(".");
}
result.append(parentPackageName[i]);
}
}
String str = new String(packageName);
if (Character.isUpperCase(str.charAt(0)) && !isPackage(result.toString())) {
return false;
}
result.append(".");
result.append(str);
return isPackage(result.toString());
}
public void cleanup() {
// EMPTY
}
};
final IErrorHandlingPolicy policy =
DefaultErrorHandlingPolicies.proceedWithAllProblems();
final Map settings = new HashMap(9);
settings.put(CompilerOptions.OPTION_LineNumberAttribute,
CompilerOptions.GENERATE);
settings.put(CompilerOptions.OPTION_SourceFileAttribute,
CompilerOptions.GENERATE);
settings.put(CompilerOptions.OPTION_ReportDeprecation,
CompilerOptions.IGNORE);
settings.put(CompilerOptions.OPTION_ReportUnusedImport, CompilerOptions.IGNORE);
if (sourceEncoding != null) {
settings.put(CompilerOptions.OPTION_Encoding, sourceEncoding);
}
if (debug) {
settings.put(CompilerOptions.OPTION_LocalVariableAttribute, CompilerOptions.GENERATE);
}
// Set the sourceCodeVersion
switch (this.compilerComplianceLevel) {
case 180:
settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_8);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_8);
break;
case 170:
settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_7);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_7);
break;
case 160:
settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_6);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_6);
break;
case 150:
settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_5);
settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_5);
break;
case 140:
settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_4);
break;
default:
settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_3);
}
// Set the target platform
switch (SystemUtils.JAVA_VERSION_INT) {
case 180:
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_8);
break;
case 170:
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_7);
break;
case 160:
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_6);
break;
case 150:
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_5);
break;
case 140:
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_4);
break;
default:
settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_3);
}
final IProblemFactory problemFactory =
new DefaultProblemFactory(Locale.getDefault());
final ICompilerRequestor requestor = new ICompilerRequestor() {
public void acceptResult(CompilationResult result) {
try {
if (result.hasErrors()) {
IProblem[] errors = result.getErrors();
for (int i = 0; i < errors.length; i++) {
IProblem error = errors[i];
String name = new String(errors[i].getOriginatingFileName());
handleError(name, error.getSourceLineNumber(), -1, error.getMessage());
}
} else {
ClassFile[] classFiles = result.getClassFiles();
for (int i = 0; i < classFiles.length; i++) {
ClassFile classFile = classFiles[i];
char[][] compoundName = classFile.getCompoundName();
StringBuffer className = new StringBuffer();
for (int j = 0; j < compoundName.length; j++) {
if (j > 0) {
className.append(".");
}
className.append(compoundName[j]);
}
byte[] bytes = classFile.getBytes();
String outFile = destDir + "/" +
className.toString().replace('.', '/') + ".class";
FileOutputStream fout = new FileOutputStream(outFile);
BufferedOutputStream bos = new BufferedOutputStream(fout);
bos.write(bytes);
bos.close();
}
}
} catch (IOException exc) {
exc.printStackTrace();
}
}
};
ICompilationUnit[] compilationUnits =
new ICompilationUnit[classNames.length];
for (int i = 0; i < compilationUnits.length; i++) {
String className = classNames[i];
compilationUnits[i] = new CompilationUnit(fileNames[i], className);
}
Compiler compiler = new Compiler(env,
policy,
settings,
requestor,
problemFactory);
compiler.compile(compilationUnits);
return errors.size() == 0;
}