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28 lines
1.3 KiB
Plaintext
28 lines
1.3 KiB
Plaintext
/**
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* Copyright (c) 2019 The xterm.js authors. All rights reserved.
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* @license MIT
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*/
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import { CHAR_DATA_CODE_INDEX, NULL_CELL_CODE, WHITESPACE_CELL_CODE } from 'common/buffer/Constants';
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import { IBufferService } from 'common/services/Services';
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export function updateWindowsModeWrappedState(bufferService: IBufferService): void {
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// Winpty does not support wraparound mode which means that lines will never
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// be marked as wrapped. This causes issues for things like copying a line
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// retaining the wrapped new line characters or if consumers are listening
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// in on the data stream.
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//
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// The workaround for this is to listen to every incoming line feed and mark
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// the line as wrapped if the last character in the previous line is not a
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// space. This is certainly not without its problems, but generally on
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// Windows when text reaches the end of the terminal it's likely going to be
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// wrapped.
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const line = bufferService.buffer.lines.get(bufferService.buffer.ybase + bufferService.buffer.y - 1);
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const lastChar = line?.get(bufferService.cols - 1);
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const nextLine = bufferService.buffer.lines.get(bufferService.buffer.ybase + bufferService.buffer.y);
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if (nextLine && lastChar) {
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nextLine.isWrapped = (lastChar[CHAR_DATA_CODE_INDEX] !== NULL_CELL_CODE && lastChar[CHAR_DATA_CODE_INDEX] !== WHITESPACE_CELL_CODE);
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}
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}
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