이진 파일을 읽어서 16진수로 보여주는 HexView 소스 with C

 

 

C 언어 소스:

// Filename: testHexView_02.c
//
//  Chapter 1.  Section 1.
//
//       A basic pattern of C++ Programing
//
// Compile: gcc -o testHexView_02 testHexView_02.c

#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h> 

void toHex(char c, char a[3]);
void toHex8(int n, char a[10]);

int main(int argc, char *argv[])
{
    char *fname;
     FILE *file2;

    fpos_t fsize;
    long m;
    int i;

    char x;
    char s[3];
    char t[10];
    char buf[16];
    fpos_t n = 0L;

    struct stat stt;

    if (argc < 2)
    {
        printf("Usage: testHexView_02 [filename]\n");
        exit( 1 );
    }

    fname = argv[1];

    if (stat(fname, &stt) == 0 )
    {
        if ( stt.st_mode & S_IFDIR )
        {
            printf("\"%s\" is a directory\n", fname);
            exit( 1 );
        }
    }
   
    if (access(fname, R_OK) != 0)
    {
        printf("The file: \"%s\" is not readble.\n", fname);
        exit( 1 );
    }
 
    file2 = fopen(fname, "rb");

    if (!file2)
    {
        printf("Fail to open the file: \"%s\".\n", fname);
        exit( 1 );
    }

    s[2] = '\0';
    t[4] = ' ';
    t[9] = '\0';
    if (file2)
    {
        fseek(file2, 0, SEEK_END);    // seek to end of file
        fsize = ftell(file2);                 // get current file pointer

        printf("Its file size is %ld.\n\n", fsize);

        fseek(file2, 0, SEEK_SET);

        while(n < fsize && !feof(file2))
        {
            toHex8(n, t);
            printf("%s: ", t);
      
            fread(buf, sizeof(buf), 1, file2);
            m = (((fsize - n) < 16L) ? (long) (fsize - n) : 16L);
            for (i = 0; i < m; i++)
            {
                x = buf[i];
                toHex(x, s);
                printf("%s", s);
                if (i == 7)
                    printf("-");
                else
                    printf(" ");
            }
            if (m < 16)
            {
                for (i = 0; i < 16 - m; i++)
                {
                    printf("   ");
                }
            }

            printf("|");
            for (i = 0; i < m; i++)
            {
                if (buf[i] < ' ')
                    printf(".");
                else
                    printf("%c", buf[i]);
            }
            if (m < 16)
            {
                for (i = 0; i < 16 - m; i++)
                {
                    printf(" ");
                }
            }
            printf("|");

            n += m;
            printf("\n");
        }

        fclose(file2);
      
        printf("\n");;
        printf("Read %ld bytes.\n", n);
    }
    else {
        printf("Fail to read the file: \"%s\".,", fname);
    }
}

void toHex(char c, char a[3]) {
    int x1, x2;
    x1 = (c & 0xF0) >> 4;
    x2 = c & 0x0F;
    if (x1 < 10)
        a[0] = x1 + '0';
    else
        a[0] = (x1 - 10) + 'A';
    if (x2 < 10)
        a[1] = x2 + '0';
    else
        a[1] = (x2 - 10) + 'A';
}

void toHex8(int n, char a[10]) {
    int x1, x2, x3, x4, x5, x6, x7, x8;
    x1 = (n & 0xF0000000) >> 28;
    x2 = (n & 0xF000000) >> 24;
    x3 = (n & 0xF00000) >> 20;
    x4 = (n & 0xF0000) >> 16;
    x5 = (n & 0xF000) >> 12;
    x6 = (n & 0xF00) >> 8;
    x7 = (n & 0xF0) >> 4;
    x8 = n & 0x0F;
    if (x1 < 10)
        a[0] = x1 + '0';
    else
        a[0] = (x1 - 10) + 'A';
    if (x2 < 10)
        a[1] = x2 + '0';
    else
        a[1] = (x2 - 10) + 'A';
    if (x3 < 10)
        a[2] = x3 + '0';
    else
        a[2] = (x3 - 10) + 'A';
    if (x4 < 10)
        a[3] = x4 + '0';
    else
        a[3] = (x4 - 10) + 'A';
    a[4] = ' ';
    if (x5 < 10)
        a[5] = x5 + '0';
    else
        a[5] = (x5 - 10) + 'A';
    if (x6 < 10)
        a[6] = x6 + '0';
    else
        a[6] = (x6 - 10) + 'A';
    if (x7 < 10)
        a[7] = x7 + '0';
    else
        a[7] = (x7 - 10) + 'A';
    if (x8 < 10)
        a[8] = x8 + '0';
    else
        a[8] = (x8 - 10) + 'A';
}

 

 

MinGW의 gcc로 컴파일하기> gcc -o testHexView_02 testHexView_02.cpp

 

실행 예 1> testHexView_02 temp_1.bin
Its file size is 12.

0000 0000: 48 65 6C 6C 6F 20 74 68-65 72 65 0A             |Hello there.    |

Read 12 bytes.

 

실행 예 2> testHexView_02 myFile.ser
Its file size is 130.

0000 0000: AC ED 00 05 73 72 00 06-50 65 72 73 6F 6E 07 31 |....sr..Person.1|
0000 0010: 46 DB A5 1D 44 AB 02 00-03 49 00 03 61 67 65 4C |F...D....I..ageL|
0000 0020: 00 09 66 69 72 73 74 4E-61 6D 65 74 00 12 4C 6A |..firstNamet..Lj|
0000 0030: 61 76 61 2F 6C 61 6E 67-2F 53 74 72 69 6E 67 3B |ava/lang/String;|
0000 0040: 4C 00 08 6C 61 73 74 4E-61 6D 65 71 00 7E 00 01 |L..lastNameq.~..|
0000 0050: 78 70 00 00 00 13 74 00-05 4A 61 6D 65 73 74 00 |xp....t..Jamest.|
0000 0060: 04 52 79 61 6E 73 71 00-7E 00 00 00 00 00 1E 74 |.Ryansq.~......t|
0000 0070: 00 07 4F 62 69 2D 77 61-6E 74 00 06 4B 65 6E 6F |..Obi-want..Keno|
0000 0080: 62 69                                           |bi              |

Read 130 bytes.