+ char *ext;
+ if( argc < 3){
+ fprintf( stderr, "Too few arguments:\n");
+ fprintf( stderr, " - input jpt or jpp file\n");
+ fprintf( stderr, " - output j2k file\n");
+ return 1;
+ }
+
+ ext = strrchr( argv[2], '.' );
+ if( ext )
+ {
+ /* strcasecmp ? */
+ if( strcmp(ext, ".jp2" ) == 0 )
+ {
+ return jpip_to_jp2(argv);
+ }
+ if( strcmp(ext, ".j2k" ) == 0 )
+ {
+ return jpip_to_j2k(argv);
+ }
+ }
+
+ fprintf( stderr, "Invalid file extension for output file: %s\n", argv[2]);
+ return 1;