#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
static int _dump(char *psDstBuf_ , size_t nSizeDstBuf_,
const void *pSrcBuf_ , size_t nSizeSrcBuf_)
{
const char aHexSymbol[] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
size_t iSrcBuf = 0;
size_t iDstBuf = 0;
unsigned char cByte = '\0';
if ( nSizeDstBuf_ < 3 ) { return 0; }
for (iSrcBuf=0; iSrcBuf<nSizeSrcBuf_; ++iSrcBuf) {
if ( ( nSizeDestBuf_ - iSrcBuf * 3 ) < 3 ) { break; }
cByte = ((const unsigned char*) pSrcBuf_)[iSrcBuf];
psDstBuf_[iDstBuf++] = aHexSymbol[(cByte >> 4) & 0b1111];
psDstBuf_[iDstBuf++] = aHexSymbol[cByte & 0b1111];
psDstBuf_[iDstBuf++] = ( (iSrcBuf & 0b1111) == 0b1111) ? '\n' : ' ';
}
psDstBuf_[iDstBuf ? iDstBuf - 1 : 0] = '\0';
return ( iSrcBuf * 3 );
}
#define LOG(fBufFiller, nSizeData) \
({ \
char *psDumpMessage = (char*) calloc(nSizeData, 1); \
\
fBufFiller(psDumpMessage); \
\
printf("%s", psDumpMessage); \
\
free(psDumpMessage); \
})
static void _message_error(const char *psFormat_, ...)
{
va_list nArgs;
va_start(nArgs, psFormat_);
size_t nSizeMsg = vsnprintf(NULL, 0, psFormat_, nArgs);
va_end(nArgs);
#define fBufFiller(psBuf) \
({ \
va_start(nArgs, psFormat_); \
vsprintf(psBuf, psFormat_, nArgs); \
va_end(nArgs); \
})
LOG(fBufFiller, nSizeMsg);
#undef fBufFiller
}
static void _message_dump(void *pDataDump_, unsigned int nSizeDump_)
{
const size_t nSizeBuf = nSizeDump_ * 3;
#define fBufFiller(psBuf) \
({ \
_dump(psBuf, nSizeBuf, pDataDump_, nSizeDump_); \
})
LOG(fBufFiller, nSizeBuf);
#undef fBufFiller
}
static void _message_state_report(int iModule_, int nError_)
{
const size_t nSizeBuf = 64;
#define fBufFiller(psBuf) \
({ \
const char *psState = nError_ ? "unworkable" : "workable"; \
sprintf(psBuf, "Report for module #%d: %s ", iModule_, psState); \
})
LOG(fBufFiller, nSizeBuf);
#undef fBufFiller
}
int main(void)
{
int aRandomData[] = { 9, 8, 7, 6, 5 };
_message_error("Sending packet '%s' is failed (code error: %d)", "bpdu_tcn", 3);
printf("\n\n");
_message_state_report(3, 5);
printf("\n\n");
_message_dump(aRandomData, sizeof(aRandomData));
printf("\n\n");
return 0;
}
