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Bunch of `hexdump -C` like functions for various languages
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// https://gist.github.com/richinseattle/c527a3acb6f152796a580401057c78b4 | |
#include <stdio.h> | |
#include <ctype.h> | |
#ifndef HEXDUMP_COLS | |
#define HEXDUMP_COLS 16 | |
#endif | |
void hexdump(void *mem, unsigned int len) | |
{ | |
unsigned int i, j; | |
for(i = 0; i < len + ((len % HEXDUMP_COLS) ? (HEXDUMP_COLS - len % HEXDUMP_COLS) : 0); i++) | |
{ | |
/* print offset */ | |
if(i % HEXDUMP_COLS == 0) | |
{ | |
printf("0x%06x: ", i); | |
} | |
/* print hex data */ | |
if(i < len) | |
{ | |
printf("%02x ", 0xFF & ((char*)mem)[i]); | |
} | |
else /* end of block, just aligning for ASCII dump */ | |
{ | |
printf(" "); | |
} | |
/* print ASCII dump */ | |
if(i % HEXDUMP_COLS == (HEXDUMP_COLS - 1)) | |
{ | |
for(j = i - (HEXDUMP_COLS - 1); j <= i; j++) | |
{ | |
if(j >= len) /* end of block, not really printing */ | |
{ | |
putchar(' '); | |
} | |
else if(isprint(((char*)mem)[j])) /* printable char */ | |
{ | |
putchar(0xFF & ((char*)mem)[j]); | |
} | |
else /* other char */ | |
{ | |
putchar('.'); | |
} | |
} | |
putchar('\n'); | |
} | |
} | |
} |
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package main | |
import ( | |
"fmt" | |
"encoding/hex" | |
) | |
func main() { | |
fmt.Print(hex.Dump([]byte{65, 66, 67, 226, 130, 172})) | |
}) |
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function hexToBytes(hex) { | |
if (bytes.length != 8) { | |
throw `${hex} != ${bytes}`; | |
} | |
for (var bytes = [], c = hex.length -2; c >= 0; c -= 2) | |
bytes.push(parseInt(hex.substr(c, 2), 16)); | |
return bytes; | |
} | |
function hexdump(buffer) { | |
blockSize = 16; | |
var lines = []; | |
for (var b = 0; b < buffer.length; b += blockSize) { | |
var block = buffer.slice(b, Math.min(b + blockSize, buffer.length)); | |
var addr = ("0000" + b.toString(16)).slice(-4); | |
var codes = block.map(ch => ' ' + ch.toString(16).padStart(2, '0')).join(''); | |
codes += " ".repeat(blockSize - block.length); | |
var chars = block.map(ch => String.fromCharCode(ch)).join('').replace(/[\x00-\x1F\x20]/g, '.'); | |
chars += " ".repeat(blockSize - block.length); | |
lines.push(addr + " " + codes + " " + chars); | |
} | |
return lines.join("\n"); | |
} |
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""" | |
https://gist.github.com/7h3rAm/5603718 | |
""" | |
def hexdump(src, length=16, sep='.'): | |
FILTER = ''.join([(len(repr(chr(x))) == 3) and chr(x) or sep for x in range(256)]) | |
lines = [] | |
for c in range(0, len(src), length): | |
chars = src[c:c+length] | |
hexstr = ' '.join(["%02x" % ord(x) for x in chars]) if type(chars) is str else ' '.join(['{:02x}'.format(x) for x in chars]) | |
if len(hexstr) > 24: | |
hexstr = "%s %s" % (hexstr[:24], hexstr[24:]) | |
printable = ''.join(["%s" % ((ord(x) <= 127 and FILTER[ord(x)]) or sep) for x in chars]) if type(chars) is str else ''.join(['{}'.format((x <= 127 and FILTER[x]) or sep) for x in chars]) | |
lines.append("%08x: %-*s |%s|" % (c, length*3, hexstr, printable)) | |
return '\n'.join(lines) |
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