view release on metacpan or  search on metacpan

unzip-6.0/amiga/makesfx.c  view on Meta::CPAN

        totalwritten += 8;
    }
    written = 0;
    do {
        chunk = fread(buf, 1, COPYBUFFER, inn);
        if (ferror(inn)) {
            printf("Error reading data from %s\n", inname);
            return false;
        }
        if (!archivesize && !written) {   /* true only for first block read */
            if (CHARS2LONG(buf) != HUNK_HEADER) {
                printf("%s is not an Amiga executable.\n", inname);
                return false;
            }
        }
        if (fwrite(buf, 1, chunk, out) < chunk) {
            printf("Error writing %s to %s\n", archivesize ? "archive data" :
                                               "self-extractor code", outname);
            return false;
        }
        written += chunk;
        totalwritten += chunk;
    } while (!feof(inn));
    if (archivesize) {
        if (written != archivesize) {
            printf("Wrong number of bytes copied from archive %s\n", outname);
            return false;
        }
        LONG2CHARS(buf, 0);
        chunk = 3 - (written + 3) % 4;
        LONG2CHARS(buf + chunk, HUNK_END);
        chunk += 4;
        if (fwrite(buf, 1, chunk, out) < chunk) {
            printf("Error writing end-marker data to %s\n", outname);
            return false;
        }
        totalwritten += chunk;
    }
    return true;
}


void main(int argc, char **argv)
{
    FILE *out, *arch, *tool;
    char *toolname = argv[3];
    struct stat ss;
    int ret;
    ulg archivesize;

    if (argc < 3 || argc > 4) {
        printf("Usage: %s <result-file> <zip-archive> [<self-extractor-"
               "program>]\nThe third arg defaults to \"UnZipSFX\" in the"
               " current dir or C:.\n", argv[0]);
        exit(20);
    }
    if (!(arch = fopen(argv[2], "rb"))) {
        printf("Could not find archive file %s\n", argv[2]);
        exit(10);
    }
    if (stat(argv[2], &ss) || !(archivesize = ss.st_size)) {
        fclose(arch);
        printf("Could not check size of archive %s, or file is empty.\n",
               argv[2]);
        exit(10);
    }
    if (argc < 4)
        toolname = "UnZipSFX";
    if (!(tool = fopen(toolname, "rb"))) {
        BPTR lk = Lock("C:", ACCESS_READ);
        BPTR ocd = lk ? CurrentDir(lk) : 0;
        if (!(tool = fopen(toolname, "rb"))) {
            fclose(arch);
            printf("Could not find self-extractor program %s\n", toolname);
            if (lk)
                UnLock(CurrentDir(ocd));
            exit(10);
        }
        if (lk)
            UnLock(CurrentDir(ocd));
    }
    if (!(out = fopen(argv[1], "wb"))) {
        fclose(arch);
        fclose(tool);
        printf("Could not create output file %s\n", argv[1]);
        exit(10);
    }
    ret = CopyData(out, tool, 0, argv[1], toolname)
          && CopyData(out, arch, archivesize, argv[1], argv[2]) ? 0 : 10;
    fclose(out);
    fclose(arch);
    fclose(tool);
    if (ret) {
        printf("Deleting %s\n", argv[1]);
        remove(argv[1]);
    } else
        printf("%s successfully written, size %lu bytes.\n",
                argv[1], totalwritten);
    exit(ret);
}


#if (defined(AZTEC_C) && defined(MCH_AMIGA))
void _wb_parse(void) { }        /* avoid unneeded infrastructure */
#endif