TypeScript typeforce.BufferN函數代碼示例

本文整理匯總了TypeScript中typeforce.BufferN函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript BufferN函數的具體用法？TypeScript BufferN怎麽用？TypeScript BufferN使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。

在下文中一共展示了BufferN函數的5個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。

示例1: p2pkh

export function p2pkh(a: Payment, opts?: PaymentOpts): Payment {
  if (!a.address && !a.hash && !a.output && !a.pubkey && !a.input)
    throw new TypeError('Not enough data');
  opts = Object.assign({ validate: true }, opts || {});

  typef(
    {
      network: typef.maybe(typef.Object),
      address: typef.maybe(typef.String),
      hash: typef.maybe(typef.BufferN(20)),
      output: typef.maybe(typef.BufferN(25)),

      pubkey: typef.maybe(ecc.isPoint),
      signature: typef.maybe(bscript.isCanonicalScriptSignature),
      input: typef.maybe(typef.Buffer),
    },
    a,
  );

  const _address = lazy.value(() => {
    const payload = bs58check.decode(a.address);
    const version = payload.readUInt8(0);
    const hash = payload.slice(1);
    return { version, hash };
  });
  const _chunks = lazy.value(() => {
    return bscript.decompile(a.input!);
  }) as StackFunction;

  const network = a.network || BITCOIN_NETWORK;
  const o: Payment = { network };

  lazy.prop(o, 'address', () => {
    if (!o.hash) return;

    const payload = Buffer.allocUnsafe(21);
    payload.writeUInt8(network.pubKeyHash, 0);
    o.hash.copy(payload, 1);
    return bs58check.encode(payload);
  });
  lazy.prop(o, 'hash', () => {
    if (a.output) return a.output.slice(3, 23);
    if (a.address) return _address().hash;
    if (a.pubkey || o.pubkey) return bcrypto.hash160(a.pubkey! || o.pubkey!);
  });
  lazy.prop(o, 'output', () => {
    if (!o.hash) return;
    return bscript.compile([
      OPS.OP_DUP,
      OPS.OP_HASH160,
      o.hash,
      OPS.OP_EQUALVERIFY,
      OPS.OP_CHECKSIG,
    ]);
  });
  lazy.prop(o, 'pubkey', () => {
    if (!a.input) return;
    return _chunks()[1] as Buffer;
  });
  lazy.prop(o, 'signature', () => {
    if (!a.input) return;
    return _chunks()[0] as Buffer;
  });
  lazy.prop(o, 'input', () => {
    if (!a.pubkey) return;
    if (!a.signature) return;
    return bscript.compile([a.signature, a.pubkey]);
  });
  lazy.prop(o, 'witness', () => {
    if (!o.input) return;
    return [];
  });

  // extended validation
  if (opts.validate) {
    let hash: Buffer = Buffer.from([]);
    if (a.address) {
      if (_address().version !== network.pubKeyHash)
        throw new TypeError('Invalid version or Network mismatch');
      if (_address().hash.length !== 20) throw new TypeError('Invalid address');
      hash = _address().hash;
    }

    if (a.hash) {
      if (hash.length > 0 && !hash.equals(a.hash))
        throw new TypeError('Hash mismatch');
      else hash = a.hash;
    }

    if (a.output) {
      if (
        a.output.length !== 25 ||
        a.output[0] !== OPS.OP_DUP ||
        a.output[1] !== OPS.OP_HASH160 ||
        a.output[2] !== 0x14 ||
        a.output[23] !== OPS.OP_EQUALVERIFY ||
        a.output[24] !== OPS.OP_CHECKSIG
      )
        throw new TypeError('Output is invalid');

//.........這裏部分代碼省略.........

開發者ID:bitcoinjs，項目名稱:bitcoinjs-lib，代碼行數:101，代碼來源:p2pkh.ts

示例2: p2wsh

export function p2wsh(a: Payment, opts?: PaymentOpts): Payment {
  if (!a.address && !a.hash && !a.output && !a.redeem && !a.witness)
    throw new TypeError('Not enough data');
  opts = Object.assign({ validate: true }, opts || {});

  typef(
    {
      network: typef.maybe(typef.Object),

      address: typef.maybe(typef.String),
      hash: typef.maybe(typef.BufferN(32)),
      output: typef.maybe(typef.BufferN(34)),

      redeem: typef.maybe({
        input: typef.maybe(typef.Buffer),
        network: typef.maybe(typef.Object),
        output: typef.maybe(typef.Buffer),
        witness: typef.maybe(typef.arrayOf(typef.Buffer)),
      }),
      input: typef.maybe(typef.BufferN(0)),
      witness: typef.maybe(typef.arrayOf(typef.Buffer)),
    },
    a,
  );

  const _address = lazy.value(() => {
    const result = bech32.decode(a.address);
    const version = result.words.shift();
    const data = bech32.fromWords(result.words);
    return {
      version,
      prefix: result.prefix,
      data: Buffer.from(data),
    };
  });
  const _rchunks = lazy.value(() => {
    return bscript.decompile(a.redeem!.input!);
  }) as StackFunction;

  let network = a.network;
  if (!network) {
    network = (a.redeem && a.redeem.network) || BITCOIN_NETWORK;
  }

  const o: Payment = { network };

  lazy.prop(o, 'address', () => {
    if (!o.hash) return;
    const words = bech32.toWords(o.hash);
    words.unshift(0x00);
    return bech32.encode(network!.bech32, words);
  });
  lazy.prop(o, 'hash', () => {
    if (a.output) return a.output.slice(2);
    if (a.address) return _address().data;
    if (o.redeem && o.redeem.output) return bcrypto.sha256(o.redeem.output);
  });
  lazy.prop(o, 'output', () => {
    if (!o.hash) return;
    return bscript.compile([OPS.OP_0, o.hash]);
  });
  lazy.prop(o, 'redeem', () => {
    if (!a.witness) return;
    return {
      output: a.witness[a.witness.length - 1],
      input: EMPTY_BUFFER,
      witness: a.witness.slice(0, -1),
    };
  });
  lazy.prop(o, 'input', () => {
    if (!o.witness) return;
    return EMPTY_BUFFER;
  });
  lazy.prop(o, 'witness', () => {
    // transform redeem input to witness stack?
    if (
      a.redeem &&
      a.redeem.input &&
      a.redeem.input.length > 0 &&
      a.redeem.output &&
      a.redeem.output.length > 0
    ) {
      const stack = bscript.toStack(_rchunks());

      // assign, and blank the existing input
      o.redeem = Object.assign({ witness: stack }, a.redeem);
      o.redeem.input = EMPTY_BUFFER;
      return ([] as Buffer[]).concat(stack, a.redeem.output);
    }

    if (!a.redeem) return;
    if (!a.redeem.output) return;
    if (!a.redeem.witness) return;
    return ([] as Buffer[]).concat(a.redeem.witness, a.redeem.output);
  });

  // extended validation
  if (opts.validate) {
    let hash: Buffer = Buffer.from([]);
    if (a.address) {
//.........這裏部分代碼省略.........

開發者ID:bitcoinjs，項目名稱:bitcoinjs-lib，代碼行數:101，代碼來源:p2wsh.ts

示例3:

// external dependent types
export const ECPoint = typeforce.quacksLike('Point');

// exposed, external API
export const Network = typeforce.compile({
  messagePrefix: typeforce.oneOf(typeforce.Buffer, typeforce.String),
  bip32: {
    public: typeforce.UInt32,
    private: typeforce.UInt32,
  },
  pubKeyHash: typeforce.UInt8,
  scriptHash: typeforce.UInt8,
  wif: typeforce.UInt8,
});

export const Buffer256bit = typeforce.BufferN(32);
export const Hash160bit = typeforce.BufferN(20);
export const Hash256bit = typeforce.BufferN(32);
export const Number = typeforce.Number; // tslint:disable-line variable-name
export const Array = typeforce.Array;
export const Boolean = typeforce.Boolean; // tslint:disable-line variable-name
export const String = typeforce.String; // tslint:disable-line variable-name
export const Buffer = typeforce.Buffer;
export const Hex = typeforce.Hex;
export const maybe = typeforce.maybe;
export const tuple = typeforce.tuple;
export const UInt8 = typeforce.UInt8;
export const UInt32 = typeforce.UInt32;
export const Function = typeforce.Function;
export const BufferN = typeforce.BufferN;
export const Null = typeforce.Null;

開發者ID:bitcoinjs，項目名稱:bitcoinjs-lib，代碼行數:31，代碼來源:types.ts

示例4: p2sh

export function p2sh(a: Payment, opts?: PaymentOpts): Payment {
  if (!a.address && !a.hash && !a.output && !a.redeem && !a.input)
    throw new TypeError('Not enough data');
  opts = Object.assign({ validate: true }, opts || {});

  typef(
    {
      network: typef.maybe(typef.Object),

      address: typef.maybe(typef.String),
      hash: typef.maybe(typef.BufferN(20)),
      output: typef.maybe(typef.BufferN(23)),

      redeem: typef.maybe({
        network: typef.maybe(typef.Object),
        output: typef.maybe(typef.Buffer),
        input: typef.maybe(typef.Buffer),
        witness: typef.maybe(typef.arrayOf(typef.Buffer)),
      }),
      input: typef.maybe(typef.Buffer),
      witness: typef.maybe(typef.arrayOf(typef.Buffer)),
    },
    a,
  );

  let network = a.network;
  if (!network) {
    network = (a.redeem && a.redeem.network) || BITCOIN_NETWORK;
  }

  const o: Payment = { network };

  const _address = lazy.value(() => {
    const payload = bs58check.decode(a.address);
    const version = payload.readUInt8(0);
    const hash = payload.slice(1);
    return { version, hash };
  });
  const _chunks = lazy.value(() => {
    return bscript.decompile(a.input!);
  }) as StackFunction;
  const _redeem = lazy.value(
    (): Payment => {
      const chunks = _chunks();
      return {
        network,
        output: chunks[chunks.length - 1] as Buffer,
        input: bscript.compile(chunks.slice(0, -1)),
        witness: a.witness || [],
      };
    },
  ) as PaymentFunction;

  // output dependents
  lazy.prop(o, 'address', () => {
    if (!o.hash) return;

    const payload = Buffer.allocUnsafe(21);
    payload.writeUInt8(o.network!.scriptHash, 0);
    o.hash.copy(payload, 1);
    return bs58check.encode(payload);
  });
  lazy.prop(o, 'hash', () => {
    // in order of least effort
    if (a.output) return a.output.slice(2, 22);
    if (a.address) return _address().hash;
    if (o.redeem && o.redeem.output) return bcrypto.hash160(o.redeem.output);
  });
  lazy.prop(o, 'output', () => {
    if (!o.hash) return;
    return bscript.compile([OPS.OP_HASH160, o.hash, OPS.OP_EQUAL]);
  });

  // input dependents
  lazy.prop(o, 'redeem', () => {
    if (!a.input) return;
    return _redeem();
  });
  lazy.prop(o, 'input', () => {
    if (!a.redeem || !a.redeem.input || !a.redeem.output) return;
    return bscript.compile(
      ([] as Stack).concat(
        bscript.decompile(a.redeem.input) as Stack,
        a.redeem.output,
      ),
    );
  });
  lazy.prop(o, 'witness', () => {
    if (o.redeem && o.redeem.witness) return o.redeem.witness;
    if (o.input) return [];
  });

  if (opts.validate) {
    let hash: Buffer = Buffer.from([]);
    if (a.address) {
      if (_address().version !== network.scriptHash)
        throw new TypeError('Invalid version or Network mismatch');
      if (_address().hash.length !== 20) throw new TypeError('Invalid address');
      hash = _address().hash;
    }
//.........這裏部分代碼省略.........

開發者ID:bitcoinjs，項目名稱:bitcoinjs-lib，代碼行數:101，代碼來源:p2sh.ts

示例5: p2wpkh

export function p2wpkh(a: Payment, opts?: PaymentOpts): Payment {
  if (!a.address && !a.hash && !a.output && !a.pubkey && !a.witness)
    throw new TypeError('Not enough data');
  opts = Object.assign({ validate: true }, opts || {});

  typef(
    {
      address: typef.maybe(typef.String),
      hash: typef.maybe(typef.BufferN(20)),
      input: typef.maybe(typef.BufferN(0)),
      network: typef.maybe(typef.Object),
      output: typef.maybe(typef.BufferN(22)),
      pubkey: typef.maybe(ecc.isPoint),
      signature: typef.maybe(bscript.isCanonicalScriptSignature),
      witness: typef.maybe(typef.arrayOf(typef.Buffer)),
    },
    a,
  );

  const _address = lazy.value(() => {
    const result = bech32.decode(a.address);
    const version = result.words.shift();
    const data = bech32.fromWords(result.words);
    return {
      version,
      prefix: result.prefix,
      data: Buffer.from(data),
    };
  });

  const network = a.network || BITCOIN_NETWORK;
  const o: Payment = { network };

  lazy.prop(o, 'address', () => {
    if (!o.hash) return;

    const words = bech32.toWords(o.hash);
    words.unshift(0x00);
    return bech32.encode(network.bech32, words);
  });
  lazy.prop(o, 'hash', () => {
    if (a.output) return a.output.slice(2, 22);
    if (a.address) return _address().data;
    if (a.pubkey || o.pubkey) return bcrypto.hash160(a.pubkey! || o.pubkey!);
  });
  lazy.prop(o, 'output', () => {
    if (!o.hash) return;
    return bscript.compile([OPS.OP_0, o.hash]);
  });
  lazy.prop(o, 'pubkey', () => {
    if (a.pubkey) return a.pubkey;
    if (!a.witness) return;
    return a.witness[1];
  });
  lazy.prop(o, 'signature', () => {
    if (!a.witness) return;
    return a.witness[0];
  });
  lazy.prop(o, 'input', () => {
    if (!o.witness) return;
    return EMPTY_BUFFER;
  });
  lazy.prop(o, 'witness', () => {
    if (!a.pubkey) return;
    if (!a.signature) return;
    return [a.signature, a.pubkey];
  });

  // extended validation
  if (opts.validate) {
    let hash: Buffer = Buffer.from([]);
    if (a.address) {
      if (network && network.bech32 !== _address().prefix)
        throw new TypeError('Invalid prefix or Network mismatch');
      if (_address().version !== 0x00)
        throw new TypeError('Invalid address version');
      if (_address().data.length !== 20)
        throw new TypeError('Invalid address data');
      hash = _address().data;
    }

    if (a.hash) {
      if (hash.length > 0 && !hash.equals(a.hash))
        throw new TypeError('Hash mismatch');
      else hash = a.hash;
    }

    if (a.output) {
      if (
        a.output.length !== 22 ||
        a.output[0] !== OPS.OP_0 ||
        a.output[1] !== 0x14
      )
        throw new TypeError('Output is invalid');
      if (hash.length > 0 && !hash.equals(a.output.slice(2)))
        throw new TypeError('Hash mismatch');
      else hash = a.output.slice(2);
    }

    if (a.pubkey) {
//.........這裏部分代碼省略.........

開發者ID:bitcoinjs，項目名稱:bitcoinjs-lib，代碼行數:101，代碼來源:p2wpkh.ts

注：本文中的typeforce.BufferN函數示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。