int main()

in contrib/libz/contrib/minizip/miniunz.c [533:659]
114 lines of code
33 McCabe index (conditional complexity)

int main(argc,argv)
    int argc;
    char *argv[];
{
    const char *zipfilename=NULL;
    const char *filename_to_extract=NULL;
    const char *password=NULL;
    char filename_try[MAXFILENAME+16] = "";
    int i;
    int ret_value=0;
    int opt_do_list=0;
    int opt_do_extract=1;
    int opt_do_extract_withoutpath=0;
    int opt_overwrite=0;
    int opt_extractdir=0;
    const char *dirname=NULL;
    unzFile uf=NULL;

    do_banner();
    if (argc==1)
    {
        do_help();
        return 0;
    }
    else
    {
        for (i=1;i<argc;i++)
        {
            if ((*argv[i])=='-')
            {
                const char *p=argv[i]+1;

                while ((*p)!='\0')
                {
                    char c=*(p++);;
                    if ((c=='l') || (c=='L'))
                        opt_do_list = 1;
                    if ((c=='v') || (c=='V'))
                        opt_do_list = 1;
                    if ((c=='x') || (c=='X'))
                        opt_do_extract = 1;
                    if ((c=='e') || (c=='E'))
                        opt_do_extract = opt_do_extract_withoutpath = 1;
                    if ((c=='o') || (c=='O'))
                        opt_overwrite=1;
                    if ((c=='d') || (c=='D'))
                    {
                        opt_extractdir=1;
                        dirname=argv[i+1];
                    }

                    if (((c=='p') || (c=='P')) && (i+1<argc))
                    {
                        password=argv[i+1];
                        i++;
                    }
                }
            }
            else
            {
                if (zipfilename == NULL)
                    zipfilename = argv[i];
                else if ((filename_to_extract==NULL) && (!opt_extractdir))
                        filename_to_extract = argv[i] ;
            }
        }
    }

    if (zipfilename!=NULL)
    {

#        ifdef USEWIN32IOAPI
        zlib_filefunc64_def ffunc;
#        endif

        strncpy(filename_try, zipfilename,MAXFILENAME-1);
        /* strncpy doesnt append the trailing NULL, of the string is too long. */
        filename_try[ MAXFILENAME ] = '\0';

#        ifdef USEWIN32IOAPI
        fill_win32_filefunc64A(&ffunc);
        uf = unzOpen2_64(zipfilename,&ffunc);
#        else
        uf = unzOpen64(zipfilename);
#        endif
        if (uf==NULL)
        {
            strcat(filename_try,".zip");
#            ifdef USEWIN32IOAPI
            uf = unzOpen2_64(filename_try,&ffunc);
#            else
            uf = unzOpen64(filename_try);
#            endif
        }
    }

    if (uf==NULL)
    {
        printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
        return 1;
    }
    printf("%s opened\n",filename_try);

    if (opt_do_list==1)
        ret_value = do_list(uf);
    else if (opt_do_extract==1)
    {
#ifdef _WIN32
        if (opt_extractdir && _chdir(dirname))
#else
        if (opt_extractdir && chdir(dirname))
#endif
        {
          printf("Error changing into %s, aborting\n", dirname);
          exit(-1);
        }

        if (filename_to_extract == NULL)
            ret_value = do_extract(uf, opt_do_extract_withoutpath, opt_overwrite, password);
        else
            ret_value = do_extract_onefile(uf, filename_to_extract, opt_do_extract_withoutpath, opt_overwrite, password);
    }

    unzClose(uf);

    return ret_value;
}