RanchiMall/fcoin
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remove old FindAndDelete.

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This commit is contained in:
Christopher Jeffrey 2016-05-04 01:07:33 -07:00
parent 51ebcf999b
commit a370bd74ed
No known key found for this signature in database
GPG Key ID: 8962AB9DE6666BBD
1 changed files with 0 additions and 90 deletions
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lib/bcoin/script.js
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@ -2009,96 +2009,6 @@ Script.prototype.removeData = function removeData(data) {
return index.length;
};
Script.prototype.removeDataRaw = function removeDataRaw(data) {
var total = 0;
var p, sig, raw, i, a, b, op, size;
// We need to reserialize the
// signature as a minimal push
// Note that this is _NOT_
// minimaldata completely. It
// _always_ encodes a pushdata
// op!
p = new BufferWriter();
if (data.length <= 0x4b) {
p.writeU8(data.length);
p.writeBytes(data);
} else if (data.length <= 0xff) {
p.writeU8(opcodes.OP_PUSHDATA1);
p.writeU8(data.length);
p.writeBytes(data);
} else if (data.length <= 0xffff) {
p.writeU8(opcodes.OP_PUSHDATA2);
p.writeU16(data.length);
p.writeBytes(data);
} else if (data.length <= 0xffffffff) {
p.writeU8(opcodes.OP_PUSHDATA4);
p.writeU32(data.length);
p.writeBytes(data);
} else {
assert(false, 'Bad pushdata op.');
}
sig = p.render();
// Should never happen, but
// bitcoind does this anyway.
if (sig.length === 0)
return total;
// Compare on the byte level.
raw = this.encode();
p = new BufferReader(raw, true);
while (p.left() >= sig.length) {
if (utils.icmp(raw, sig, p.offset) === 0) {
a = raw.slice(0, p.offset);
b = raw.slice(p.offset + sig.length);
raw = Buffer.concat([a, b]);
p.data = raw;
total++;
}
if (p.left() === 0)
break;
op = p.readU8();
if (op >= 0x01 && op <= 0x4b) {
if (p.left() < op)
break;
} else if (op === opcodes.OP_PUSHDATA1) {
if (p.left() < 1)
break;
size = p.readU8();
if (p.left() < size)
break;
p.seek(size);
} else if (op === opcodes.OP_PUSHDATA2) {
if (p.left() < 2)
break;
size = p.readU16();
if (p.left() < size)
break;
p.seek(size);
} else if (op === opcodes.OP_PUSHDATA4) {
if (p.left() < 4)
break;
size = p.readU32();
if (p.left() < size)
break;
p.seek(size);
}
}
if (total > 0) {
this.code = Script.decode(raw);
if (this.raw)
this.raw = raw;
}
return total;
};
/**
* Find a data element in a script.
* @param {Buffer} data - Data element to match against.