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Start supporting the REP escape sequence

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This commit is contained in:
Fredrik Fornwall
2017-08-13 16:14:31 +02:00
parent d7520642de
commit edc92bbcbb
2 changed files with 16 additions and 0 deletions
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8
terminal-emulator/src/main/java/com/termux/terminal/TerminalEmulator.java
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@@ -223,6 +223,7 @@ public final class TerminalEmulator {
private byte mUtf8ToFollow, mUtf8Index;
private final byte[] mUtf8InputBuffer = new byte[4];
private int mLastEmittedCodePoint = -1;
public final TerminalColors mColors = new TerminalColors();
@@ -1509,6 +1510,11 @@ public final class TerminalEmulator {
case '`': // Horizontal position absolute (HPA - http://www.vt100.net/docs/vt510-rm/HPA).
setCursorColRespectingOriginMode(getArg0(1) - 1);
break;
case 'b': // Repeat the preceding graphic character Ps times (REP).
if (mLastEmittedCodePoint == -1) break;
final int numRepeat = getArg0(1);
for (int i = 0; i < numRepeat; i++) emitCodePoint(mLastEmittedCodePoint);
break;
case 'c': // Primary Device Attributes (http://www.vt100.net/docs/vt510-rm/DA1) if argument is missing or zero.
// The important part that may still be used by some (tmux stores this value but does not currently use it)
// is the first response parameter identifying the terminal service class, where we send 64 for "vt420".
@@ -1574,6 +1580,7 @@ public final class TerminalEmulator {
// Also require that top + 2 <= bottom.
mTopMargin = Math.max(0, Math.min(getArg0(1) - 1, mRows - 2));
mBottomMargin = Math.max(mTopMargin + 2, Math.min(getArg1(mRows), mRows));
// DECSTBM moves the cursor to column 1, line 1 of the page respecting origin mode.
setCursorPosition(0, 0);
}
@@ -2091,6 +2098,7 @@ public final class TerminalEmulator {
* @param codePoint The code point of the character to display
*/
private void emitCodePoint(int codePoint) {
mLastEmittedCodePoint = codePoint;
if (mUseLineDrawingUsesG0 ? mUseLineDrawingG0 : mUseLineDrawingG1) {
// http://www.vt100.net/docs/vt102-ug/table5-15.html.
switch (codePoint) {

8
terminal-emulator/src/test/java/com/termux/terminal/ControlSequenceIntroducerTest.java
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@@ -35,4 +35,12 @@ public class ControlSequenceIntroducerTest extends TerminalTestCase {
withTerminalSized(3, 2).enterString("\033[0;38;2;255;255;255;48;2;0;0;0;1;2;3;4;5;7;8;9mabc").assertLinesAre("abc", " ");
}
/** CSI Ps b Repeat the preceding graphic character Ps times (REP). */
public void testRepeat() {
withTerminalSized(3, 2).enterString("a\033[b").assertLinesAre("aa ", " ");
withTerminalSized(3, 2).enterString("a\033[2b").assertLinesAre("aaa", " ");
// When no char has been output we ignore REP:
withTerminalSized(3, 2).enterString("\033[b").assertLinesAre(" ", " ");
}
}