ipfs storage for images and other nontext items. for use with etica - runs on etica network and currencys
https://collect.etica-stats.org
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103 lines
3.8 KiB
103 lines
3.8 KiB
import { getAddress } from "../address/index.js"; |
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import { keccak256 as _keccak256, sha256 as _sha256 } from "../crypto/index.js"; |
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import { concat, dataLength, getBytes, hexlify, toBeArray, toTwos, toUtf8Bytes, zeroPadBytes, zeroPadValue, assertArgument } from "../utils/index.js"; |
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const regexBytes = new RegExp("^bytes([0-9]+)$"); |
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const regexNumber = new RegExp("^(u?int)([0-9]*)$"); |
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const regexArray = new RegExp("^(.*)\\[([0-9]*)\\]$"); |
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function _pack(type, value, isArray) { |
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switch (type) { |
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case "address": |
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if (isArray) { |
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return getBytes(zeroPadValue(value, 32)); |
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} |
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return getBytes(getAddress(value)); |
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case "string": |
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return toUtf8Bytes(value); |
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case "bytes": |
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return getBytes(value); |
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case "bool": |
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value = (!!value ? "0x01" : "0x00"); |
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if (isArray) { |
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return getBytes(zeroPadValue(value, 32)); |
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} |
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return getBytes(value); |
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} |
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let match = type.match(regexNumber); |
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if (match) { |
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let signed = (match[1] === "int"); |
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let size = parseInt(match[2] || "256"); |
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assertArgument((!match[2] || match[2] === String(size)) && (size % 8 === 0) && size !== 0 && size <= 256, "invalid number type", "type", type); |
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if (isArray) { |
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size = 256; |
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} |
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if (signed) { |
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value = toTwos(value, size); |
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} |
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return getBytes(zeroPadValue(toBeArray(value), size / 8)); |
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} |
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match = type.match(regexBytes); |
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if (match) { |
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const size = parseInt(match[1]); |
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assertArgument(String(size) === match[1] && size !== 0 && size <= 32, "invalid bytes type", "type", type); |
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assertArgument(dataLength(value) === size, `invalid value for ${type}`, "value", value); |
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if (isArray) { |
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return getBytes(zeroPadBytes(value, 32)); |
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} |
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return value; |
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} |
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match = type.match(regexArray); |
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if (match && Array.isArray(value)) { |
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const baseType = match[1]; |
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const count = parseInt(match[2] || String(value.length)); |
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assertArgument(count === value.length, `invalid array length for ${type}`, "value", value); |
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const result = []; |
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value.forEach(function (value) { |
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result.push(_pack(baseType, value, true)); |
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}); |
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return getBytes(concat(result)); |
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} |
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assertArgument(false, "invalid type", "type", type); |
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} |
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// @TODO: Array Enum |
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/** |
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* Computes the [[link-solc-packed]] representation of %%values%% |
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* respectively to their %%types%%. |
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* |
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* @example: |
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* addr = "0x8ba1f109551bd432803012645ac136ddd64dba72" |
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* solidityPacked([ "address", "uint" ], [ addr, 45 ]); |
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* //_result: |
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*/ |
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export function solidityPacked(types, values) { |
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assertArgument(types.length === values.length, "wrong number of values; expected ${ types.length }", "values", values); |
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const tight = []; |
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types.forEach(function (type, index) { |
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tight.push(_pack(type, values[index])); |
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}); |
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return hexlify(concat(tight)); |
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} |
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/** |
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* Computes the [[link-solc-packed]] [[keccak256]] hash of %%values%% |
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* respectively to their %%types%%. |
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* |
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* @example: |
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* addr = "0x8ba1f109551bd432803012645ac136ddd64dba72" |
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* solidityPackedKeccak256([ "address", "uint" ], [ addr, 45 ]); |
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* //_result: |
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*/ |
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export function solidityPackedKeccak256(types, values) { |
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return _keccak256(solidityPacked(types, values)); |
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} |
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/** |
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* Computes the [[link-solc-packed]] [[sha256]] hash of %%values%% |
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* respectively to their %%types%%. |
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* |
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* @example: |
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* addr = "0x8ba1f109551bd432803012645ac136ddd64dba72" |
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* solidityPackedSha256([ "address", "uint" ], [ addr, 45 ]); |
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* //_result: |
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*/ |
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export function solidityPackedSha256(types, values) { |
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return _sha256(solidityPacked(types, values)); |
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} |
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//# sourceMappingURL=solidity.js.map
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