public void eraseInLine(int arg) {
myTerminalTextBuffer.lock();
try {
switch (arg) {
case 0:
if (myCursorX < myTerminalWidth) {
myTerminalTextBuffer.eraseCharacters(myCursorX, myTerminalWidth, myCursorY - 1);
}
// delete to the end of line : line is no more wrapped
myTerminalTextBuffer.getLine(myCursorY - 1).setWrapped(false);
break;
case 1:
final int extent = Math.min(myCursorX + 1, myTerminalWidth);
myTerminalTextBuffer.eraseCharacters(0, extent, myCursorY - 1);
break;
case 2:
myTerminalTextBuffer.eraseCharacters(0, myTerminalWidth, myCursorY - 1);
break;
default:
LOG.error("Unsupported erase in line mode:" + arg);
break;
}
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void eraseInDisplay(final int arg) {
myTerminalTextBuffer.lock();
try {
int beginY;
int endY;
switch (arg) {
case 0:
// Initial line
if (myCursorX < myTerminalWidth) {
myTerminalTextBuffer.eraseCharacters(myCursorX, myTerminalWidth, myCursorY - 1);
}
// Rest
beginY = myCursorY;
endY = myTerminalHeight;
break;
case 1:
// initial line
myTerminalTextBuffer.eraseCharacters(0, myCursorX + 1, myCursorY - 1);
beginY = 0;
endY = myCursorY - 1;
break;
case 2:
beginY = 0;
endY = myTerminalHeight;
break;
default:
LOG.error("Unsupported erase in display mode:" + arg);
beginY = 1;
endY = 1;
break;
}
// Rest of lines
if (beginY != endY) {
clearLines(beginY, endY);
}
} finally {
myTerminalTextBuffer.unlock();
}
}
@Override
public void eraseCharacters(int count) {
// Clear the next n characters on the cursor's line, including the cursor's
// position.
myTerminalTextBuffer.lock();
try {
final int extent = Math.min(count, myTerminalWidth - myCursorX);
myTerminalTextBuffer.eraseCharacters(myCursorX, myCursorX + extent, myCursorY - 1);
} finally {
myTerminalTextBuffer.unlock();
}
}