72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
//---------------------------------------------------------------------------//
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#ifndef HEXSHOW
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#define HEXSHOW
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#include <sstream>
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#include <assert.h>
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//---------------------------------------------------------------------------//
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namespace hex
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{
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void show(std::vector<unsigned char> &mydata, unsigned long int width = 32,
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unsigned long int startidx = 0,
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unsigned long int breakidx = 512)
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{
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// check input
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assert ( startidx <= breakidx );
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breakidx = ( breakidx > mydata.size() || breakidx == 0 ) ? mydata.size() : breakidx;
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// introduce additional line break
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std::cout<<"\n";
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// declare two stringstreams for hexadecimal and ASCII output
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std::stringstream sshex, sschr;
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// count bytes
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unsigned long int idx = 0;
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// process data
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for ( std::size_t i = startidx; i < breakidx; i++ )
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{
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unsigned char el = mydata[i];
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// hex representation
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if ( (idx+0)%width == 0 )
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{
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sshex<<std::hex<<"0x"<<std::setw(6)<<std::setfill('0')<<idx<<": ";
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}
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sshex<<std::hex<<std::setw(2)<<std::setfill('0')<<(int)el;
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sshex<<std::dec<<std::setfill(' ')<<" ";
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// ascii representation
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unsigned char elcl = ( (int)el > 0x1f && (int)el < 0x7f) ? el : '.';
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sschr<<std::dec<<std::setfill(' ')<<elcl;
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// do actual printing (including very last potentially incomplete line)
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if ( (idx+1)%width == 0 || i == breakidx-1 )
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{
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// fill up any hexadecimal string that is shorter than default width
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while ( sshex.str().size() < 3*width+10 ) sshex<<" ";
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// print hexadecimal and ascii representation
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std::cout<<sshex.str()<<" "<<sschr.str();
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std::cout<<"\n";
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// clear stringstreams
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sshex.str(std::string());
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sschr.str(std::string());
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}
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// count number of bytes
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idx++;
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}
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std::cout<<"\n";
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}
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}
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#endif
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//---------------------------------------------------------------------------//
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