78 lines
1.3 KiB
C++
78 lines
1.3 KiB
C++
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#include "FileIO.h"
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#include <stdint.h> /* uint8_t */
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#include <stdio.h>
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#include <math.h>
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#include <errno.h> /* errno */
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#include <string.h> /* strerror */
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static int
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IsProbablyAscii (const void *buf, const size_t len)
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{
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const uint8_t *bufPtr;
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const uint8_t *bufPtrEnd;
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size_t nAsciiCount;
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nAsciiCount = 0;
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bufPtr = (const uint8_t *) buf;
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bufPtrEnd = bufPtr + len;
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while (bufPtr < bufPtrEnd && (NULL != bufPtr) && (*bufPtr != '\0'))
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{
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nAsciiCount += (*bufPtr >= ' ') && (*bufPtr <= '~');
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bufPtr++;
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}
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return (int) round ((double) nAsciiCount / (double) len);
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}
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static void
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HexDump (const void *buf, const size_t len)
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{
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const uint8_t *bufPtr;
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const uint8_t *bufPtrEnd;
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const size_t width = 16;
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size_t nout;
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nout = 0;
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bufPtr = (const uint8_t *) buf;
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bufPtrEnd = bufPtr + len;
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while (bufPtr < bufPtrEnd && (NULL != bufPtr))
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{
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if (nout == width)
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{
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printf ("\n");
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nout = 0;
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}
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printf ("%02x ", *bufPtr);
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bufPtr++;
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nout++;
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}
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puts ("");
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}
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int
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main (int argc, char **argv)
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{
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int rc;
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rc = 1;
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try
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{
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while (argc-- > 1)
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{
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FileIO f (argv[argc], "r");
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std::string buf = f.ReadToString ();
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if (IsProbablyAscii (buf.c_str (), buf.size ()))
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printf ("%s", buf.c_str ());
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else
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HexDump (buf.c_str (), buf.size ());
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rc = 0;
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}
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}
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catch (int err)
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{
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puts (strerror (errno));
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}
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return rc;
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}
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