http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/wvstreams/wvhex.h

/* -*- Mode: C++ -*- * Worldvisions Weaver Software: * Copyright (C) 1997-2002 Net Integration Technologies, Inc. * * Hex encoder and hex decoder. */ #ifndef __WVHEX_H #define __WVHEX_H #include "wvencoder.h" /** * A hex encoder. * * The input data is transformed into a sequence of hexadecimal * characters. * * Supports reset(). * */ class WvHexEncoder : public WvEncoder { char alphabase; public: /** * Creates a hex encoder. * * "use_uppercase" is if true, outputs hex codes A through Z * in upper case, otherwise output them in lower case * (the default) */ WvHexEncoder(bool use_uppercase = false); virtual ~WvHexEncoder() { } protected: virtual bool _encode(WvBuf &in, WvBuf &out, bool flush); virtual bool _reset(); // supported }; /** * A hex decoder. * * The input hex characters are paired and decoded into the * corresponding byte stream. Whitespace is skipped as is the * case of the hex codes A through Z. Other characters cause the * encoder to flag an error. * * Supports reset(). * */ class WvHexDecoder : public WvEncoder { bool issecond; int first; public: /** Creates a hex decoder. */ WvHexDecoder(); virtual ~WvHexDecoder() { } protected: virtual bool _encode(WvBuf &in, WvBuf &out, bool flush); virtual bool _reset(); // supported }; /** \file * Hex functions for compatibility with older code */ /** * Write the contents of the binary string of length 'len' pointed to by 'ibuf' * into the output buffer 'obuf' in hexadecimal format. * * For example, if len==4, ibuf=="ABCDEF", then obuf will contain "41424344" * with a terminating NULL character. * * This is useful to turn arbitrary binary into a simple printable format, so * that it can (for example) be written to a WvConf configuration file. * * obuf must be a buffer with at least (len * 2) + 1 bytes available. (two * digits for each byte of ibuf, plus a terminating NULL). */ void hexify(char *obuf, const void *ibuf, size_t len); /** * Reverse the operation performed by hexify(). obuf must be a buffer large * enough to contain the entire binary output string; you can calculate this * size with (strlen(ibuf) / 2). obuf will NOT be automatically NULL-terminated. */ void unhexify(void *obuf, const char *ibuf); #endif // __WVHEX_H