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/*
* Anarres C Preprocessor
* Copyright (c) 2007-2015, Shevek
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package org.anarres.cpp;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.List;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.taskdefs.Copy;
import org.apache.tools.ant.types.Path;
/**
* An ant task for jcpp.
*/
public class CppTask extends Copy {
private class Listener extends DefaultPreprocessorListener {
@Override
protected void print(String msg) {
log(msg);
}
}
public static class Macro {
private String name;
private String value;
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setValue(String value) {
this.value = value;
}
public String getValue() {
return value;
}
}
private final Listener listener = new Listener();
private final List<Macro> macros = new ArrayList<Macro>();
private Path systemincludepath;
private Path localincludepath;
public void addMacro(Macro macro) {
macros.add(macro);
}
public void addSystemincludepath(Path path) {
if (systemincludepath == null)
systemincludepath = new Path(getProject());
systemincludepath.add(path);
}
public void addLocalincludepath(Path path) {
if (localincludepath == null)
localincludepath = new Path(getProject());
localincludepath.add(path);
}
/*
public void execute() {
FileWriter writer = null;
try {
if (input == null)
throw new BuildException("Input not specified");
if (output == null)
throw new BuildException("Output not specified");
cpp.addInput(this.input);
writer = new FileWriter(this.output);
for (;;) {
Token tok = cpp.token();
if (tok != null && tok.getType() == Token.EOF)
break;
writer.write(tok.getText());
}
}
catch (Exception e) {
throw new BuildException(e);
}
finally {
if (writer != null) {
try {
writer.close();
}
catch (IOException e) {
}
}
}
}
*/
private void preprocess(File input, File output) throws Exception {
if (input == null)
throw new BuildException("Input not specified");
if (output == null)
throw new BuildException("Output not specified");
Preprocessor cpp = new Preprocessor();
cpp.setListener(listener);
for (Macro macro : macros)
cpp.addMacro(macro.getName(), macro.getValue());
if (systemincludepath != null)
cpp.setSystemIncludePath(Arrays.asList(systemincludepath.list()));
if (localincludepath != null)
cpp.setQuoteIncludePath(Arrays.asList(localincludepath.list()));
File dir = output.getParentFile();
if (!dir.exists()) {
if (!dir.mkdirs())
throw new BuildException("Failed to make parent directory " + dir);
} else if (!dir.isDirectory()) {
throw new BuildException("Parent directory of output file " + output + " exists, but is not a directory.");
}
FileWriter writer = null;
try {
cpp.addInput(input);
writer = new FileWriter(output);
for (;;) {
Token tok = cpp.token();
if (tok == null)
break;
if (tok.getType() == Token.EOF)
break;
writer.write(tok.getText());
}
} finally {
if (writer != null) {
try {
writer.close();
} catch (IOException e) {
}
}
}
}
@Override
protected void doFileOperations() {
if (fileCopyMap.size() > 0) {
log("Copying " + fileCopyMap.size()
+ " file" + (fileCopyMap.size() == 1 ? "" : "s")
+ " to " + destDir.getAbsolutePath());
Enumeration<String> e = fileCopyMap.keys();
while (e.hasMoreElements()) {
String fromFile = e.nextElement();
String[] toFiles = (String[]) fileCopyMap.get(fromFile);
for (String toFile : toFiles) {
if (fromFile.equals(toFile)) {
log("Skipping self-copy of " + fromFile, verbosity);
continue;
}
try {
log("Copying " + fromFile + " to " + toFile, verbosity);
/*
FilterSetCollection executionFilters
= new FilterSetCollection();
if (filtering) {
executionFilters
.addFilterSet(getProject().getGlobalFilterSet());
}
for (Enumeration filterEnum = getFilterSets().elements();
filterEnum.hasMoreElements();) {
executionFilters
.addFilterSet((FilterSet) filterEnum.nextElement());
}
*/
File srcFile = new File(fromFile);
File dstFile = new File(toFile);
preprocess(srcFile, dstFile);
} catch (Exception ioe) {
// ioe.printStackTrace();
String msg = "Failed to copy " + fromFile + " to " + toFile
+ " due to " + ioe.getMessage();
File targetFile = new File(toFile);
if (targetFile.exists() && !targetFile.delete()) {
msg += " and I couldn't delete the corrupt " + toFile;
}
throw new BuildException(msg, ioe, getLocation());
}
}
}
}
}
}
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