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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code by Matt McCutchen, see the LICENSE file.
#include "BigIntegerUtils.hh"
#include "BigUnsignedInABase.hh"
std::string bigUnsignedToString(const BigUnsigned &x) {
return std::string(BigUnsignedInABase(x, 10));
}
std::string bigIntegerToString(const BigInteger &x) {
return (x.getSign() == BigInteger::negative)
? (std::string("-") + bigUnsignedToString(x.getMagnitude()))
: (bigUnsignedToString(x.getMagnitude()));
}
BigUnsigned stringToBigUnsigned(const std::string &s) {
return BigUnsigned(BigUnsignedInABase(s, 10));
}
BigInteger stringToBigInteger(const std::string &s) {
// Recognize a sign followed by a BigUnsigned.
return (s[0] == '-') ? BigInteger(stringToBigUnsigned(s.substr(1, s.length() - 1)), BigInteger::negative)
: (s[0] == '+') ? BigInteger(stringToBigUnsigned(s.substr(1, s.length() - 1)))
: BigInteger(stringToBigUnsigned(s));
}
std::ostream &operator <<(std::ostream &os, const BigUnsigned &x) {
BigUnsignedInABase::Base base;
long osFlags = os.flags();
if (osFlags & os.dec)
base = 10;
else if (osFlags & os.hex) {
base = 16;
if (osFlags & os.showbase)
os << "0x";
} else if (osFlags & os.oct) {
base = 8;
if (osFlags & os.showbase)
os << '0';
} else
abort();
std::string s = std::string(BigUnsignedInABase(x, base));
os << s;
return os;
}
std::ostream &operator <<(std::ostream &os, const BigInteger &x) {
if (x.getSign() == BigInteger::negative)
os << '-';
os << x.getMagnitude();
return os;
}
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