41 lines
1.4 KiB
Java
41 lines
1.4 KiB
Java
package net.sf.jasperreports.engine.design;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.InputStream;
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import net.sf.jasperreports.engine.JRException;
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public class JRJavacCompiler extends JRAbstractMultiClassCompiler {
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public String compileClasses(File[] sourceFiles, String classpath) throws JRException {
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String[] source = new String[sourceFiles.length + 3];
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source[0] = "javac";
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source[1] = "-classpath";
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source[2] = classpath;
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for (int i = 0; i < sourceFiles.length; i++)
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source[i + 3] = sourceFiles[i].getPath();
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try {
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Process compile = Runtime.getRuntime().exec(source);
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InputStream errFile = compile.getErrorStream();
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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byte[] buffer = new byte[1024];
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int count = 0;
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do {
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count = errFile.read(buffer);
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if (count <= 0)
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continue;
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baos.write(buffer, 0, count);
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} while (count >= 0);
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if (baos.toString().indexOf("error") != -1)
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return baos.toString();
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return null;
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} catch (Exception e) {
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StringBuffer files = new StringBuffer();
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for (int j = 0; j < sourceFiles.length; j++) {
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files.append(sourceFiles[j].getPath());
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files.append(' ');
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}
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throw new JRException("Error compiling report java source files : " + files, e);
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}
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}
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}
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