将文件的hexdump或RAW数据提取到文本 [英] Extract hexdump or RAW data of a file to text

问题描述

我想知道是否有一种方法可以将文件的十六进制转储或原始数据输出到txt文件. 例如 我有一个文件，例如"data.jpg"(文件类型无关)，如何将HEXdump(14ed 5602等)导出到文件"output.txt"? 还如何指定输出格式，例如Unicode或UTF? 在C ++中

I was wondering if there is a way to output the hexdump or raw data of a file to txt file. for example I have a file let's say "data.jpg" (the file type is irrelevant) how can I export the HEXdump (14ed 5602 etc) to a file "output.txt"? also how I can I specify the format of the output for example, Unicode or UTF? in C++

推荐答案

这很老了-如果要使用Unicode，则必须自己添加.

This is pretty old -- if you want Unicode, you'll have to add that yourself.

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) {
    unsigned long offset = 0;
    FILE *input;
    int bytes, i, j;
    unsigned char buffer[16];
    char outbuffer[60];

    if ( argc < 2 ) {
        fprintf(stderr, "\nUsage: dump filename [filename...]");
        return EXIT_FAILURE;
    }

    for (j=1;j<argc; ++j) {

        if ( NULL ==(input=fopen(argv[j], "rb")))
            continue;

        printf("\n%s:\n", argv[j]);

        while (0 < (bytes=fread(buffer, 1, 16, input))) {
            sprintf(outbuffer, "%8.8lx: ", offset+=16);
            for (i=0;i<bytes;i++) {
                sprintf(outbuffer+10+3*i, "%2.2X ",buffer[i]);
                if (!isprint(buffer[i]))
                    buffer[i] = '.';
            }
            printf("%-60s %*.*s\n", outbuffer, bytes, bytes, buffer);
        }
        fclose(input);
    }
    return 0;
}

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