71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
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/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_CRYPT_STRING_H_
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#define RTC_BASE_CRYPT_STRING_H_
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#include <string.h>
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#include <memory>
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#include <string>
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#include <vector>
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namespace rtc {
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class CryptStringImpl {
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public:
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virtual ~CryptStringImpl() {}
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virtual size_t GetLength() const = 0;
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virtual void CopyTo(char* dest, bool nullterminate) const = 0;
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virtual std::string UrlEncode() const = 0;
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virtual CryptStringImpl* Copy() const = 0;
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virtual void CopyRawTo(std::vector<unsigned char>* dest) const = 0;
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};
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class EmptyCryptStringImpl : public CryptStringImpl {
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public:
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~EmptyCryptStringImpl() override {}
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size_t GetLength() const override;
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void CopyTo(char* dest, bool nullterminate) const override;
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std::string UrlEncode() const override;
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CryptStringImpl* Copy() const override;
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void CopyRawTo(std::vector<unsigned char>* dest) const override;
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};
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class CryptString {
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public:
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CryptString();
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size_t GetLength() const { return impl_->GetLength(); }
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void CopyTo(char* dest, bool nullterminate) const {
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impl_->CopyTo(dest, nullterminate);
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}
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CryptString(const CryptString& other);
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explicit CryptString(const CryptStringImpl& impl);
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~CryptString();
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CryptString& operator=(const CryptString& other) {
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if (this != &other) {
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impl_.reset(other.impl_->Copy());
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}
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return *this;
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}
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void Clear() { impl_.reset(new EmptyCryptStringImpl()); }
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std::string UrlEncode() const { return impl_->UrlEncode(); }
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void CopyRawTo(std::vector<unsigned char>* dest) const {
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return impl_->CopyRawTo(dest);
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}
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private:
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std::unique_ptr<const CryptStringImpl> impl_;
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};
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} // namespace rtc
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#endif // RTC_BASE_CRYPT_STRING_H_
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