| 1 | /* |
| 2 | * Copyright (c) 1989 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | * |
| 17 | * @(#)vis.h 5.1 (Berkeley) %G% |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * cencode flags |
| 22 | */ |
| 23 | #define CENC_CSTYLE 1 /* use C-style backslash sequences */ |
| 24 | #define CENC_GRAPH 2 /* encode as ^? and M- sequences */ |
| 25 | #define CENC_OCTAL 4 /* encode as octal sequences */ |
| 26 | #define CENC_ALL (CENC_CSTYLE|CENC_GRAPH|CENC_OCTAL) |
| 27 | #define CENC_WHITE 8 /* encode white-space chars (sp-tb-nl) */ |
| 28 | #define CENC_RACHAR 0x10 /* look at read-ahead char */ |
| 29 | |
| 30 | /* |
| 31 | * cdecode flags |
| 32 | */ |
| 33 | #define CDEC_HAT 1 /* treat ^ as special */ |
| 34 | #define CDEC_END 2 /* reset decode machine */ |
| 35 | |
| 36 | /* |
| 37 | * cdecode return codes |
| 38 | */ |
| 39 | #define CDEC_NEEDMORE 0 /* not done, feed another char */ |
| 40 | #define CDEC_OK 1 /* done, character ready */ |
| 41 | #define CDEC_OKPUSH 2 /* done, push back passed char */ |
| 42 | #define CDEC_NOCHAR 3 /* done, no character ready (hidden newline) */ |
| 43 | #define CDEC_SYNBAD -1 /* unrecognized escape sequence */ |
| 44 | |
| 45 | extern char *cencode(); |