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Increase speed of Javadoc task 

Submitted by:	Glenn McAllister <glennm@ca.ibm.com>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@267944 13f79535-47bb-0310-9956-ffa450edef68
master
Conor MacNeill 25 years ago
parent
587a3c4f5e
commit
f504cf793e
1 changed files with 45 additions and 166 deletions
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  1. +45
    -166
      src/main/org/apache/tools/ant/taskdefs/Javadoc.java

+ 45
- 166
src/main/org/apache/tools/ant/taskdefs/Javadoc.java View File

@@ -201,6 +201,7 @@ public class Javadoc extends Task {
}
}

private boolean foundJavaFile = false;
private Path sourcePath = null;
private File destDir = null;
private String sourceFiles = null;
@@ -797,7 +798,6 @@ public class Javadoc extends Task {
* patterns.
*/
private void evaluatePackages(Path sourcePath, Vector packages) {
log("Parsing source files for packages", Project.MSG_INFO);
log("Source path = " + sourcePath.toString(), Project.MSG_VERBOSE);
log("Packages = " + packages, Project.MSG_VERBOSE);

@@ -805,10 +805,9 @@ public class Javadoc extends Task {
String[] list = sourcePath.list();
for (int j=0; j<list.length; j++) {
File source = project.resolveFile(list[j]);
Hashtable map = mapClasses(source);
Vector foundPackages = findPackages(source);

Enumeration e = map.keys();
Enumeration e = foundPackages.elements();
while (e.hasMoreElements()) {
String pack = (String) e.nextElement();
for (int i = 0; i < packages.size(); i++) {
@@ -833,91 +832,6 @@ public class Javadoc extends Task {
return string.startsWith(pattern.substring(0, pattern.length() - 2));
}

/**
* Returns an hashtable of packages linked to the last parsed
* file in that package. This map is use to return a list of unique
* packages as map keys.
*/
private Hashtable mapClasses(File path) {
Hashtable map = new Hashtable();

Vector files = new Vector();
getFiles(path, files);

Enumeration e = files.elements();
while (e.hasMoreElements()) {
File file = (File) e.nextElement();
String packageName = getPackageName(file);
if (packageName != null) map.put(packageName, file);
}

return map;
}

/**
* Fills the given vector with files under the given path filtered
* by the given file filter.
*/
private void getFiles(File path, Vector list) {
if (!path.exists()) {
throw new BuildException("Path " + path + " does not exist.");
}

String[] files = path.list();
String cwd = path.getPath() + System.getProperty("file.separator");

if (files != null) {
int count = 0;
for (int i = 0; i < files.length; i++) {
File file = new File(cwd + files[i]);
if (file.isDirectory()) {
getFiles(file, list);
} else if (files[i].endsWith(".java")) {
count++;
list.addElement(file);
}
}
if (count > 0) {
log("found " + count + " source files in " + path, Project.MSG_VERBOSE);
}
} else {
throw new BuildException("Error occurred during " + path + " evaluation.");
}
}

/**
* Return the package name of the given java source file.
* This method performs valid java parsing to figure out the package.
*/
private String getPackageName(File file) {
String name = null;

try {
// do not remove the double buffered reader, this is a _major_ speed up in this special case!
BufferedReader reader = new BufferedReader(new JavaReader(new BufferedReader(new FileReader(file))));
String line;
while (true) {
line = reader.readLine();
if (line == null) {
log("Could not evaluate package for " + file, Project.MSG_WARN);
return null;
}
if (line.trim().startsWith("package ") ||
line.trim().startsWith("package\t")) {
name = line.substring(8, line.indexOf(";")).trim();
break;
}
}
reader.close();
} catch (Exception e) {
log("Exception " + e + " parsing " + file, Project.MSG_WARN);
return null;
}

log(file + " --> " + name, Project.MSG_VERBOSE);

return name;
}

private class JavadocOutputStream extends LogOutputStream {
JavadocOutputStream(int level) {
@@ -957,83 +871,48 @@ public class Javadoc extends Task {
}
}

/**
* This is a java comment and string stripper reader that filters
* these lexical tokens out for purposes of simple Java parsing.
* (if you have more complex Java parsing needs, use a real lexer).
* Since this class heavily relies on the single char read function,
* you are reccomended to make it work on top of a buffered reader.
*/
class JavaReader extends FilterReader {

public JavaReader(Reader in) {
super(in);
}

public int read() throws IOException {
int c = in.read();
if (c == '/') {
c = in.read();
if (c == '/') {
while (c != '\n' && c != -1) c = in.read();
} else if (c == '*') {
while (c != -1) {
c = in.read();
if (c == '*') {
c = in.read();
while (c == '*' && c != -1) {
c = in.read();
}
if (c == '/') {
c = read();
break;
}
}
}
}
}
if (c == '"') {
while (c != -1) {
c = in.read();
if (c == '\\') {
c = in.read();
} else if (c == '"') {
c = read();
break;
}
}
}
if (c == '\'') {
c = in.read();
if (c == '\\') c = in.read();
c = in.read();
c = read();
}
return c;
}

public int read(char cbuf[], int off, int len) throws IOException {
for (int i = 0; i < len; i++) {
int c = read();
if (c == -1) {
if (i == 0) {
return -1;
} else {
return i;
}
}
cbuf[off + i] = (char) c;
}
return len;
}

public long skip(long n) throws IOException {
for (long i = 0; i < n; i++) {
if (in.read() == -1) return i;
}
return n;
}
protected Vector findPackages(File srcDir) {
Vector foundPkgs = new Vector();
if ((srcDir != null) && (srcDir.isDirectory())) {
scan(srcDir, "", foundPkgs);
}
return foundPkgs;
}

protected void scan(File srcDir, String vpath, Vector pkgs) {
foundJavaFile = false;
File dir = new File(srcDir, vpath);
if (!dir.isDirectory()) {
return;
}
String[] files = dir.list(new FilenameFilter () {
public boolean accept(File dir, String name) {
if (name.endsWith(".java")) {
foundJavaFile = true;
return false;
}
File d = new File(dir, name);
if (d.isDirectory()) {
return true;
}
return false;
}
});
if (foundJavaFile) {
String newPkg = vpath.substring(1).replace(File.separatorChar, '.');
if (!pkgs.contains(newPkg)) {
pkgs.add(newPkg);
}
}
for (int i=0; i<files.length; i++) {
scan(srcDir, vpath + File.separator + files[i], pkgs);
}
return;
}
}

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