/usr/include/wvstreams/wvhex.h is in libwvstreams-dev 4.6.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | /* -*- 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
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