89 lines
2.9 KiB
JavaScript
89 lines
2.9 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.zeroPadBytes = exports.zeroPadValue = exports.stripZerosLeft = exports.dataSlice = exports.dataLength = exports.concat = exports.hexlify = exports.isBytesLike = exports.isHexString = void 0;
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const logger_js_1 = require("./logger.js");
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function isHexString(value, length) {
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if (typeof (value) !== "string" || !value.match(/^0x[0-9A-Fa-f]*$/)) {
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return false;
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}
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if (typeof (length) === "number" && value.length !== 2 + 2 * length) {
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return false;
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}
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if (length === true && (value.length % 2) !== 0) {
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return false;
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}
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return true;
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}
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exports.isHexString = isHexString;
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function isBytesLike(value) {
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return (isHexString(value, true) || (value instanceof Uint8Array));
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}
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exports.isBytesLike = isBytesLike;
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const HexCharacters = "0123456789abcdef";
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function hexlify(data) {
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const bytes = logger_js_1.logger.getBytes(data);
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let result = "0x";
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for (let i = 0; i < bytes.length; i++) {
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const v = bytes[i];
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result += HexCharacters[(v & 0xf0) >> 4] + HexCharacters[v & 0x0f];
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}
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return result;
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}
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exports.hexlify = hexlify;
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function concat(datas) {
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return "0x" + datas.map((d) => hexlify(d).substring(2)).join("");
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}
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exports.concat = concat;
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function dataLength(data) {
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if (isHexString(data, true)) {
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return (data.length - 2) / 2;
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}
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return logger_js_1.logger.getBytes(data).length;
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}
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exports.dataLength = dataLength;
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function dataSlice(data, start, end) {
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const bytes = logger_js_1.logger.getBytes(data);
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if (end != null && end > bytes.length) {
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logger_js_1.logger.throwError("cannot slice beyond data bounds", "BUFFER_OVERRUN", {
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buffer: bytes, length: bytes.length, offset: end
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});
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}
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return hexlify(bytes.slice((start == null) ? 0 : start, (end == null) ? bytes.length : end));
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}
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exports.dataSlice = dataSlice;
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function stripZerosLeft(data) {
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let bytes = hexlify(data).substring(2);
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while (bytes.substring(0, 2) == "00") {
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bytes = bytes.substring(2);
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}
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return "0x" + bytes;
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}
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exports.stripZerosLeft = stripZerosLeft;
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function zeroPad(data, length, left) {
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const bytes = logger_js_1.logger.getBytes(data);
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if (length < bytes.length) {
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logger_js_1.logger.throwError("padding exceeds data length", "BUFFER_OVERRUN", {
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buffer: new Uint8Array(bytes),
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length: length,
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offset: length + 1
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});
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}
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const result = new Uint8Array(length);
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result.fill(0);
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if (left) {
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result.set(bytes, length - bytes.length);
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}
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else {
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result.set(bytes, 0);
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}
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return hexlify(result);
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}
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function zeroPadValue(data, length) {
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return zeroPad(data, length, true);
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}
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exports.zeroPadValue = zeroPadValue;
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function zeroPadBytes(data, length) {
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return zeroPad(data, length, false);
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}
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exports.zeroPadBytes = zeroPadBytes;
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//# sourceMappingURL=data.js.map
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