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Buffer output and do not create new temp array streams

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This commit is contained in:
Rene Pfeuffer
2019-11-18 11:41:09 +01:00
parent b35d407d96
commit cbee87fa0c
2 changed files with 65 additions and 23 deletions
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53
scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/GitDiffCommand.java
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@@ -37,10 +37,13 @@ import org.eclipse.jgit.util.QuotedString;
import sonia.scm.repository.Repository;
import sonia.scm.repository.api.DiffCommandBuilder;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import static java.nio.charset.StandardCharsets.UTF_8;
/**
*
* @author Sebastian Sdorra
@@ -73,17 +76,19 @@ public class GitDiffCommand extends AbstractGitCommand implements DiffCommand {
};
}
private static class DequoteOutputStream extends OutputStream {
static class DequoteOutputStream extends OutputStream {
private final OutputStream target;
private boolean afterNL = false;
private boolean writeToBuffer = false;
private int minusCount = 0;
private int plusCount = 0;
private ByteArrayOutputStream buffer;
private DequoteOutputStream(OutputStream target) {
this.target = target;
private final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
DequoteOutputStream(OutputStream target) {
this.target = new BufferedOutputStream(target);
}
@Override
@@ -105,38 +110,40 @@ public class GitDiffCommand extends AbstractGitCommand implements DiffCommand {
afterNL = false;
target.write(i);
} else if (i == (int) ' ' && plusCount == 3) {
buffer = new ByteArrayOutputStream();
writeToBuffer = true;
buffer.reset();
afterNL = false;
plusCount = 0;
target.write(i);
} else if (i == (int) ' ' && minusCount == 3) {
minusCount = 0;
afterNL = false;
buffer = new ByteArrayOutputStream();
writeToBuffer = true;
buffer.reset();
target.write(i);
} else if (i == (int) '\n') {
if (buffer != null) {
afterNL = true;
afterNL = true;
if (writeToBuffer) {
byte[] bytes = buffer.toByteArray();
String dequote = QuotedString.GIT_PATH.dequote(bytes, 0, bytes.length);
target.write(dequote.getBytes());
target.write(i);
buffer = null;
} else {
afterNL = true;
target.write(i);
target.write(dequote.getBytes(UTF_8));
writeToBuffer = false;
}
target.write(i);
} else if (writeToBuffer) {
buffer.write(i);
afterNL = false;
} else {
if (buffer != null) {
buffer.write(i);
afterNL = false;
} else {
target.write(i);
afterNL = false;
minusCount = 0;
plusCount = 0;
}
target.write(i);
afterNL = false;
minusCount = 0;
plusCount = 0;
}
}
@Override
public void flush() throws IOException {
target.flush();
}
}
}