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/*
 * Copyright (C) 2004-2018 ZNC, see the NOTICE file for details.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ZNC_BUFFER_H
#define ZNC_BUFFER_H

#include <znc/zncconfig.h>
#include <znc/ZNCString.h>
#include <znc/Message.h>
#include <sys/time.h>
#include <deque>

// Forward Declarations
class CClient;
// !Forward Declarations

class CBufLine {
  public:
    CBufLine() : CBufLine("") {
        throw 0;
    }  // shouldn't be called, but is needed for compilation
    CBufLine(const CMessage& Format, const CString& sText = "");
    /// @deprecated
    CBufLine(const CString& sFormat, const CString& sText = "",
             const timeval* ts = nullptr,
             const MCString& mssTags = MCString::EmptyMap);
    ~CBufLine();
    CMessage ToMessage(const CClient& Client, const MCString& mssParams) const;
    /// @deprecated Use ToMessage() instead
    CString GetLine(const CClient& Client, const MCString& mssParams) const;
    /// @deprecated
    void UpdateTime();

    bool Equals(const CMessage& Format) const {
        return m_Message.Equals(Format);
    }

    // Setters
    void SetFormat(const CString& sFormat) { m_Message.Parse(sFormat); }
    void SetText(const CString& sText) { m_sText = sText; }
    void SetTime(const timeval& ts) { m_Message.SetTime(ts); }
    void SetTags(const MCString& mssTags) { m_Message.SetTags(mssTags); }
    // !Setters

    // Getters
    const CString& GetCommand() const { return m_Message.GetCommand(); }
    CString GetFormat() const {
        return m_Message.ToString(CMessage::ExcludeTags);
    }
    const CString& GetText() const { return m_sText; }
    timeval GetTime() const { return m_Message.GetTime(); }
    const MCString& GetTags() const { return m_Message.GetTags(); }
    // !Getters

  private:
  protected:
    CMessage m_Message;
    CString m_sText;
};

class CBuffer : private std::deque<CBufLine> {
  public:
    CBuffer(unsigned int uLineCount = 100);
    ~CBuffer();

    size_type AddLine(const CMessage& Format, const CString& sText = "");
    size_type UpdateLine(const CString& sCommand, const CMessage& Format,
                         const CString& sText = "");
    size_type UpdateExactLine(const CMessage& Format,
                              const CString& sText = "");

    size_type AddLine(const CString& sFormat, const CString& sText = "",
                      const timeval* ts = nullptr,
                      const MCString& mssTags = MCString::EmptyMap);
    /// Same as AddLine, but replaces a line whose format string starts with sMatch if there is one.
    size_type UpdateLine(const CString& sMatch, const CString& sFormat,
                         const CString& sText = "");
    /// Same as UpdateLine, but does nothing if this exact line already exists.
    /// We need this because "/version" sends us the 005 raws again
    size_type UpdateExactLine(const CString& sFormat,
                              const CString& sText = "");
    const CBufLine& GetBufLine(unsigned int uIdx) const;
    CString GetLine(size_type uIdx, const CClient& Client,
                    const MCString& msParams = MCString::EmptyMap) const;
    size_type Size() const { return size(); }
    bool IsEmpty() const { return empty(); }
    void Clear() { clear(); }

    // Setters
    bool SetLineCount(unsigned int u, bool bForce = false);
    // !Setters

    // Getters
    unsigned int GetLineCount() const { return m_uLineCount; }
    // !Getters
  private:
  protected:
    unsigned int m_uLineCount;
};

#endif  // !ZNC_BUFFER_H

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