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format.ts
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format.ts
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import { green } from "./deps.ts";
export function format(data: ArrayBufferView) {
const bytes = new Uint8Array(data.buffer);
let out = "";
out += " +-------------------------------------------------+\n";
out += ` |${green(" 0 1 2 3 4 5 6 7 8 9 a b c d e f ")}|\n`;
out += "+--------+-------------------------------------------------+----------------+\n";
const lineCount = Math.ceil(bytes.length / 16);
for (let line = 0; line < lineCount; line++) {
const start = line * 16;
const addr = start.toString(16).padStart(8, "0");
const lineBytes = bytes.slice(start, start + 16);
out += `|${green(addr)}| `;
lineBytes.forEach(
byte => (out += byte.toString(16).padStart(2, "0") + " ")
);
if (lineBytes.length < 16) {
out += " ".repeat(16 - lineBytes.length);
}
out += "|";
lineBytes.forEach(function (byte) {
return (out += byte > 31 && byte < 127 ? green(String.fromCharCode(byte)) : ".");
});
if (lineBytes.length < 16) {
out += " ".repeat(16 - lineBytes.length);
}
out += "|\n";
}
out += "+--------+-------------------------------------------------+----------------+";
return out;
}