26 lines
699 B
TypeScript
26 lines
699 B
TypeScript
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function normalizeSerialLocalEchoLineEndings(data: string): string {
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let output = "";
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for (let i = 0; i < data.length; i += 1) {
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const ch = data[i];
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if (ch === "\r") {
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output += "\r\n";
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if (data[i + 1] === "\n") i += 1;
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} else if (ch === "\n") {
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output += "\r\n";
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} else {
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output += ch;
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}
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}
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return output;
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}
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export function formatSerialLocalEcho(data: string): string {
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if (!data) return "";
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if (data === "\x7f" || data === "\b") return "\b \b";
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if (data === "\x03") return "^C";
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if (data === "\r" || data === "\n" || data.charCodeAt(0) >= 32 || data.length > 1) {
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return normalizeSerialLocalEchoLineEndings(data);
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}
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return "";
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}
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