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Code Issues Wiki Activity

[207785] NPE when trying to send char while no longer connected

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This commit is contained in:
Martin Oberhuber 2007-10-30 23:19:13 +00:00
parent 02f20b5086
commit 0334a2e1ed
1 changed files with 24 additions and 19 deletions
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43
terminal/org.eclipse.tm.terminal/src/org/eclipse/tm/internal/terminal/emulator/VT100TerminalControl.java
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@ -16,6 +16,7 @@
* Martin Oberhuber (Wind River) - [206892] State handling: Only allow connect when CLOSED
* Martin Oberhuber (Wind River) - [206883] Serial Terminal leaks Jobs
* Martin Oberhuber (Wind River) - [208145] Terminal prints garbage after quick disconnect/reconnect
* Martin Oberhuber (Wind River) - [207785] NPE when trying to send char while no longer connected
*******************************************************************************/
package org.eclipse.tm.internal.terminal.emulator;
@ -419,27 +420,31 @@ public class VT100TerminalControl implements ITerminalControlForText, ITerminalC
protected void sendChar(char chKey, boolean altKeyPressed) {
try {
int byteToSend = chKey;
if (altKeyPressed) {
// When the ALT key is pressed at the same time that a character is
// typed, translate it into an ESCAPE followed by the character. The
// alternative in this case is to set the high bit of the character
// being transmitted, but that will cause input such as ALT-f to be
// seen as the ISO Latin-1 character '�', which can be confusing to
// European users running Emacs, for whom Alt-f should move forward a
// word instead of inserting the '�' character.
//
// TODO: Make the ESCAPE-vs-highbit behavior user configurable.
Logger.log("sending ESC + '" + byteToSend + "'"); //$NON-NLS-1$ //$NON-NLS-2$
getOutputStream().write('\u001b');
getOutputStream().write(byteToSend);
OutputStream os = getOutputStream();
if (os==null) {
// Bug 207785: NPE when trying to send char while no longer connected
Logger.log("NOT sending '" + byteToSend + "' because no longer connected"); //$NON-NLS-1$ //$NON-NLS-2$
} else {
Logger.log("sending '" + byteToSend + "'"); //$NON-NLS-1$ //$NON-NLS-2$
getOutputStream().write(byteToSend);
}
if (altKeyPressed) {
// When the ALT key is pressed at the same time that a character is
// typed, translate it into an ESCAPE followed by the character. The
// alternative in this case is to set the high bit of the character
// being transmitted, but that will cause input such as ALT-f to be
// seen as the ISO Latin-1 character '�', which can be confusing to
// European users running Emacs, for whom Alt-f should move forward a
// word instead of inserting the '�' character.
//
// TODO: Make the ESCAPE-vs-highbit behavior user configurable.
getOutputStream().flush();
Logger.log("sending ESC + '" + byteToSend + "'"); //$NON-NLS-1$ //$NON-NLS-2$
getOutputStream().write('\u001b');
getOutputStream().write(byteToSend);
} else {
Logger.log("sending '" + byteToSend + "'"); //$NON-NLS-1$ //$NON-NLS-2$
getOutputStream().write(byteToSend);
}
getOutputStream().flush();
}
} catch (SocketException socketException) {
Logger.logException(socketException);