CommandOutput.h

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// CommandOutput.h
 
// Declares various classes that process command output
 
#pragma once
 
 
 
 
 
class cCommandOutputCallback
{
public:
    virtual ~cCommandOutputCallback() {}  // Force a virtual destructor in subclasses
 
    virtual void Out(const AString & a_Text) = 0;
 
    void OutLn(const AString & aText)
    {
        Out(aText);
        Out("\n");
    }
 
    virtual void Finished() {}
} ;
 
 
 
 
 
class cNullCommandOutputCallback :
    public cCommandOutputCallback
{
    // cCommandOutputCallback overrides:
    virtual void Out(const AString & a_Text) override
    {
        // Do nothing
        UNUSED(a_Text);
    }
} ;
 
 
 
 
 
class cStringAccumCommandOutputCallback:
    public cCommandOutputCallback
{
    using Super = cCommandOutputCallback;
 
public:
 
    // cCommandOutputCallback overrides:
    virtual void Out(const AString & a_Text) override;
    virtual void Finished() override {}
 
    const AString & GetAccum() const { return m_Accum; }
 
protected:
    AString m_Accum;
} ;
 
 
 
 
 
class cLogCommandOutputCallback :
    public cStringAccumCommandOutputCallback
{
public:
    // cStringAccumCommandOutputCallback overrides:
    virtual void Finished() override;
} ;
 
 
 
 
 
class cLogCommandDeleteSelfOutputCallback:
    public cLogCommandOutputCallback
{
    using Super = cLogCommandOutputCallback;
 
    virtual void Finished() override
    {
        Super::Finished();
        delete this;
    }
} ;