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WaterMarker

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5 Apr 2006Zlib5 min read 103.7K   3K   64  
An utility to protect yout pictures with a stamp bitmap.
#if !defined(__xiofile_h)
#define __xiofile_h

#include "xfile.h"

class DLL_EXP CxIOFile : public CxFile
	{
public:
	CxIOFile(FILE* fp = NULL)
	{
		m_fp = fp;
		m_bCloseFile = (bool)(fp==0);
	}

	~CxIOFile()
	{
		Close();
	}
//////////////////////////////////////////////////////////
	bool Open(const char *filename, const char *mode)
	{
		if (m_fp) return false;	// Can't re-open without closing first

		m_fp = fopen(filename, mode);
		if (!m_fp) return false;

		m_bCloseFile = true;

		return true;
	}
//////////////////////////////////////////////////////////
	virtual bool Close()
	{
		int iErr = 0;
		if ( (m_fp) && (m_bCloseFile) ){ 
			iErr = fclose(m_fp);
			m_fp = NULL;
		}
		return (bool)(iErr==0);
	}
//////////////////////////////////////////////////////////
	virtual size_t	Read(void *buffer, size_t size, size_t count)
	{
		if (!m_fp) return 0;
		return fread(buffer, size, count, m_fp);
	}
//////////////////////////////////////////////////////////
	virtual size_t	Write(const void *buffer, size_t size, size_t count)
	{
		if (!m_fp) return 0;
		return fwrite(buffer, size, count, m_fp);
	}
//////////////////////////////////////////////////////////
	virtual bool Seek(long offset, int origin)
	{
		if (!m_fp) return false;
		return (bool)(fseek(m_fp, offset, origin) == 0);
	}
//////////////////////////////////////////////////////////
	virtual long Tell()
	{
		if (!m_fp) return 0;
		return ftell(m_fp);
	}
//////////////////////////////////////////////////////////
	virtual long	Size()
	{
		if (!m_fp) return -1;
		long pos,size;
		pos = ftell(m_fp);
		fseek(m_fp, 0, SEEK_END);
		size = ftell(m_fp);
		fseek(m_fp, pos,SEEK_SET);
		return size;
	}
//////////////////////////////////////////////////////////
	virtual bool	Flush()
	{
		if (!m_fp) return false;
		return (bool)(fflush(m_fp) == 0);
	}
//////////////////////////////////////////////////////////
	virtual bool	Eof()
	{
		if (!m_fp) return true;
		return (bool)(feof(m_fp) != 0);
	}
//////////////////////////////////////////////////////////
	virtual long	Error()
	{
		if (!m_fp) return -1;
		return ferror(m_fp);
	}
//////////////////////////////////////////////////////////
	virtual bool PutC(unsigned char c)
	{
		if (!m_fp) return false;
		return (bool)(fputc(c, m_fp) == c);
	}
//////////////////////////////////////////////////////////
	virtual long	GetC()
	{
		if (!m_fp) return EOF;
		return getc(m_fp);
	}
//////////////////////////////////////////////////////////
protected:
	FILE *m_fp;
	bool m_bCloseFile;
	};

#endif

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This article, along with any associated source code and files, is licensed under The zlib/libpng License


Written By
Software Developer
France France
KOCH David, 41 years old
Coder (embedded, C/C++, ASM, Erlang)

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