1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)vis.h 5.8 (Berkeley) 02/23/91 8 */ 9 10 /* 11 * to select alternate encoding format 12 */ 13 #define VIS_OCTAL 0x01 /* use octal \ddd format */ 14 #define VIS_CSTYLE 0x02 /* use \[nrft0..] where appropiate */ 15 16 /* 17 * to alter set of characters encoded (default is to encode all 18 * non-graphic except space, tab, and newline). 19 */ 20 #define VIS_SP 0x04 /* also encode space */ 21 #define VIS_TAB 0x08 /* also encode tab */ 22 #define VIS_NL 0x10 /* also encode newline */ 23 #define VIS_WHITE (VIS_SP | VIS_TAB | VIS_NL) 24 #define VIS_SAFE 0x20 /* only encode "unsafe" characters */ 25 26 /* 27 * other 28 */ 29 #define VIS_NOSLASH 0x40 /* inhibit printing '\' */ 30 31 /* 32 * unvis return codes 33 */ 34 #define UNVIS_VALID 1 /* character valid */ 35 #define UNVIS_VALIDPUSH 2 /* character valid, push back passed char */ 36 #define UNVIS_NOCHAR 3 /* valid sequence, no character produced */ 37 #define UNVIS_SYNBAD -1 /* unrecognized escape sequence */ 38 #define UNVIS_ERROR -2 /* decoder in unknown state (unrecoverable) */ 39 40 /* 41 * unvis flags 42 */ 43 #define UNVIS_END 1 /* no more characters */ 44 45 #include <sys/cdefs.h> 46 47 __BEGIN_DECLS 48 char *vis __P((char *, char, int, char)); 49 int strvis __P((char *, const char *, int)); 50 int strvisx __P((char *, const char *, size_t, int)); 51 int strunvis __P((char *, const char *)); 52 int unvis __P((char *, char, int *, int)); 53 __END_DECLS 54