allproxy/build/server/src/formatters/HexFormatter.js

AllProxy: MITM HTTP Debugging Tool.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
class HexFormatter {
    static format(buffer) {
        const hexStr = buffer.toString('hex');
        let utf8Str = buffer.toString('utf8');
        utf8Str = utf8Str.replace(/[^\x20-\x7E]/g, '.');
        let strWithNewline = '';
        let i = 0;
        let j = 0;
        let displayable = '';
        for (; i + 8 < hexStr.length; i += 8, j += 4) {
            strWithNewline += hexStr.substring(i, i + 8) + ' ';
            displayable += utf8Str.substring(j, j + 4);
            if (i > 0 && (i + 8) % 32 === 0) {
                strWithNewline += '  ' + displayable;
                displayable = '';
                strWithNewline += '\n';
            }
        }
        if (i < hexStr.length) {
            strWithNewline += hexStr.substring(i, hexStr.length);
            if (hexStr.length % 32 !== 0) {
                const pad = 32 - hexStr.length % 32;
                strWithNewline += (' '.repeat(pad + Math.ceil((pad + 1) / 8)));
            }
            strWithNewline += ('  ' + displayable + utf8Str.substring(j, utf8Str.length));
        }
        return strWithNewline;
    }
}
exports.default = HexFormatter;
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