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#include <stdio.h>
#include <stdint.h>
#include <err.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
int main()
{
const size_t CHUNK_SIZE = 64;
size_t size = CHUNK_SIZE, read = 0, ret = 0;
uint8_t *bytes = NULL;
if ((freopen(NULL, "rb", stdin)) == NULL)
errx(EXIT_FAILURE, "freopen(stdin) : %s", strerror(errno));
if ((bytes = malloc(sizeof(uint8_t) * size)) == NULL)
errx(EXIT_FAILURE, "malloc(sizeof(uint8_t) * %lu) : %s", size, strerror(errno));
while ((ret = fread(&bytes[read], sizeof(uint8_t), CHUNK_SIZE, stdin)) != 0)
{
read += ret;
size += CHUNK_SIZE;
bytes = realloc(bytes, sizeof(uint8_t) * size);
if (bytes == NULL)
errx(EXIT_FAILURE, "realloc(sizeof(uint8_t) * %lu) : %s", size, strerror(errno));
}
if (ferror(stdin) != 0) errx(EXIT_FAILURE, "ferror(stdin) : %s", strerror(errno));
printf("nbr bytes read : %lu\n", read);
for (int i = 0; i < read; i++) printf("0x%.2x ", bytes[i]);
free(bytes);
return 0;
}
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