163     char *inname = NULL, outname[256];  in main()  local
289                 inname = *argv;  in main()
300     if (!inname) {  in main()
324     } else if ((len = strlen(inname)) > 250) {  in main()
328     } else if (!(wpng_info.infile = fopen(inname, "rb"))) {  in main()
329         fprintf(stderr, PROGNAME ":  can't open input file [%s]\n", inname);  in main()
340               inname);  in main()
365                 if ((p = strrchr(inname, '.')) == NULL ||  in main()
366                     (p - inname) != (len - 4))  in main()
368                     strcpy(outname, inname);  in main()
372                     strncpy(outname, inname, len);  in main()