bstream.h

包含标准证书编/解码、哈希、MD5、SHA1等算法的实现源码

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  permit persons to whom the Software or its derivatives is furnished 
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  The above copyright notice and this permission notice shall be
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#pragma ident "@(#)Bstream.h	1.4 96/01/29 Sun Microsystems"

#ifndef BSTREAM_H
#define BSTREAM_H

/*
 * Binary Stream Data Type
 */

#include "my_types.h"

const int SUCCESS =	0;
const int FAILURE =	-1;
const int EOS =		FAILURE;

class Bstream {
	int		peekindex;
	byte		*deletethis;
	int 		len;
	byte		*datap;
 public:
	Bstream();
	Bstream(int, byte *);
	Bstream(const char *);
	Bstream(const String &);
	Bstream(const Bstream &);
	~Bstream();
	operator const char *() const;
	//operator String() const;
	Bstream& operator =(const Bstream &);
	friend Boolean operator ==(const Bstream&, const Bstream&);
	friend Boolean operator !=(const Bstream&, const Bstream&);
	friend Bstream operator +(const Bstream&, const Bstream&);
	Bstream& operator +=(const Bstream&);
	int consume(int );	// Consume from beginning of stream
	int truncate(int );	// truncate from end of stream
	int getlength() const;
	byte *getdatap() const;
	String getstr() const;
	int fetchbyte(byte &);
	int peekbyte(byte &);
	byte last() const;
	Bstream replace(const Bstream&, const Bstream&) const;
					// Replace string from with string to
	int store(const char *) const;	// Save binary string in file
	int write(FILE *f) const;	// Write binary string to a FILE ptr.
	void print() const;		// Hex dump
	void prints() const;		// print as ASCII string
	void printhexint() const;	// Print as a MP Hex integer
	void printdecint() const;	// print as a MP Decimal integer
	String gethexstr() const;	// Hex output as integer to a String
	String getdecstr() const;	// Decimal output as integer to a String
};

extern Bstream File_to_Bstr(const char *);
extern String File_to_String(const char *);

#endif BSTREAM_H