/
ascii-column.ts
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/
ascii-column.ts
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/********************************************************************************
* Copyright (C) 2023 Ericsson and others.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the Eclipse
* Public License v. 2.0 are satisfied: GNU General Public License, version 2
* with the GNU Classpath Exception which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
********************************************************************************/
import { ReactNode } from 'react';
import { Memory } from '../../common/memory';
import { BigIntMemoryRange, toOffset } from '../../common/memory-range';
import { ColumnContribution, TableRenderOptions } from './column-contribution-service';
function isPrintableAsAscii(input: number): boolean {
return input >= 32 && input < (128 - 1);
};
function getASCIIForSingleByte(byte: number | undefined): string {
return typeof byte === 'undefined'
? ' ' : isPrintableAsAscii(byte) ? String.fromCharCode(byte) : '.';
}
export class AsciiColumn implements ColumnContribution {
readonly id = 'ascii';
readonly label = 'ASCII';
readonly priority = 3;
render(range: BigIntMemoryRange, memory: Memory, options: TableRenderOptions): ReactNode {
const wordSize = options.bytesPerWord * 8;
const startOffset = toOffset(memory.address, range.startAddress, wordSize);
const endOffset = toOffset(memory.address, range.endAddress, wordSize);
let result = '';
for (let i = startOffset; i < endOffset; i++) {
result += getASCIIForSingleByte(memory.bytes[i]);
}
return result;
}
}