010 editor tar template

TAR.bt

//--------------------------------------
//--- 010 Editor v6.0.2 Binary Template
//
//      File: TAR.bt
//    Author: xiaozhuai
//   Version: 1.0
//   Purpose: Read tar files.
//  Category: Archive
// File Mask: *.tar
//--------------------------------------

int OctalFilesizeStringToInt(char str[]){
    if (Strlen(str) == 0) return 0;
    local int x;
    local int i;
    x = 0;
    for (i = 0; i <= 10; i++ ){
        x += ((str[10-i]-0x30) * Pow(8, i)); 
    }
    return x;
}

typedef struct {
                                  /* byte offset */
    char name[100];               /*   0 */
    char mode[8];                 /* 100 */
    char uid[8];                  /* 108 */
    char gid[8];                  /* 116 */
    char size[12];                /* 124 */
    char mtime[12];               /* 136 */
    char chksum[8];               /* 148 */
    char typeflag;                /* 156 */
    char linkname[100];           /* 157 */
    char magic[6];                /* 257 */
    char version[2];              /* 263 */
    char uname[32];               /* 265 */
    char gname[32];               /* 297 */
    char devmajor[8];             /* 329 */
    char devminor[8];             /* 337 */
    char prefix[155];             /* 345 */
                                  /* 500 */
} TAR_ENTRY_HEADER;

typedef struct {
    TAR_ENTRY_HEADER header;
    UBYTE padding[12];
    local int len = OctalFilesizeStringToInt(header.size);
    if (len > 0) {
        UBYTE content[len];
        UBYTE entry_padding[512 - (len % 512)];
    }
} TAR_ENTRY <read=ReadEntry>;


string ReadEntry( TAR_ENTRY &a )
{
    if (Strlen(a.header.name) > 0) {
        string s;
        SPrintf( s, "name: %s, size: %d", a.header.name, OctalFilesizeStringToInt(a.header.size));
        return s;
    } else {
        return "(empty)";
    }
}


while (!FEof()){
    TAR_ENTRY entry;
}