xref: /onnv-gate/usr/src/lib/libmail/inc/s_string.h (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23*0Sstevel@tonic-gate /*	  All Rights Reserved  	*/
24*0Sstevel@tonic-gate 
25*0Sstevel@tonic-gate 
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate  * Copyright (c) 1999, by Sun Microsystems, Inc.
28*0Sstevel@tonic-gate  * All rights reserved.
29*0Sstevel@tonic-gate  */
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate /* This is a private header file.				*/
32*0Sstevel@tonic-gate 
33*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI" 	/* SVr4.0 1.4	*/
34*0Sstevel@tonic-gate /* extensible strings */
35*0Sstevel@tonic-gate 
36*0Sstevel@tonic-gate #ifndef _S_STRING_H
37*0Sstevel@tonic-gate #define _S_STRING_H
38*0Sstevel@tonic-gate 
39*0Sstevel@tonic-gate #include <string.h>
40*0Sstevel@tonic-gate 
41*0Sstevel@tonic-gate typedef struct string {
42*0Sstevel@tonic-gate 	char *base;	/* base of string */
43*0Sstevel@tonic-gate 	char *end;	/* end of allocated space+1 */
44*0Sstevel@tonic-gate 	char *ptr;	/* ptr into string */
45*0Sstevel@tonic-gate } string;
46*0Sstevel@tonic-gate 
47*0Sstevel@tonic-gate /*
48*0Sstevel@tonic-gate  * LINT:  expect lint warnings from the following macros
49*0Sstevel@tonic-gate  * Some macros have an integer at the end, which has null effect according
50*0Sstevel@tonic-gate  * to lint, but causes the last expression to be evaluated as an int (didn't
51*0Sstevel@tonic-gate  * change this).
52*0Sstevel@tonic-gate  */
53*0Sstevel@tonic-gate #define s_clone(s)	s_copy((s)->ptr)
54*0Sstevel@tonic-gate #define s_curlen(s)	((s)->ptr - (s)->base)
55*0Sstevel@tonic-gate #define s_dup(s)	s_copy((s)->base)
56*0Sstevel@tonic-gate #define s_getc(s)	(*((s)->ptr++))
57*0Sstevel@tonic-gate #define s_peek(s)	(*((s)->ptr))
58*0Sstevel@tonic-gate #define s_putc(s,c)     (((s)->ptr < (s)->end) ? (*((s)->ptr)++ = (char)(c)) : s_grow((s),(c)))
59*0Sstevel@tonic-gate #define s_reset(s)	((s) ? (*((s)->ptr = (s)->base) = '\0' , (s)) : s_new())
60*0Sstevel@tonic-gate #define s_restart(s)	((s)->ptr = (s)->base , (s))
61*0Sstevel@tonic-gate #define s_skipc(s)	((s)->ptr++)
62*0Sstevel@tonic-gate #define s_space(s)	((s)->end - (s)->base)
63*0Sstevel@tonic-gate #define s_terminate(s)  (((s)->ptr < (s)->end) ? (*(s)->ptr = 0) : (s_grow((s),0), (s)->ptr--, 0))
64*0Sstevel@tonic-gate #define s_to_c(s)	((s)->base)
65*0Sstevel@tonic-gate #define s_ptr_to_c(s)	((s)->ptr)
66*0Sstevel@tonic-gate 
67*0Sstevel@tonic-gate #ifdef __STDC__
68*0Sstevel@tonic-gate extern string *s_append(string *to, char *from);
69*0Sstevel@tonic-gate extern string *s_array(char *, size_t len);
70*0Sstevel@tonic-gate extern string *s_copy(char *);
71*0Sstevel@tonic-gate extern void s_free(string*);
72*0Sstevel@tonic-gate extern int s_grow(string *sp, int c);
73*0Sstevel@tonic-gate extern string *s_new(void);
74*0Sstevel@tonic-gate extern string *s_parse(string *from, string *to);
75*0Sstevel@tonic-gate extern char *s_read_line(FILE *fp, string *to);
76*0Sstevel@tonic-gate extern size_t s_read_to_eof(FILE *fp, string *to);
77*0Sstevel@tonic-gate extern string *s_seq_read(FILE *fp, string *to, int lineortoken);
78*0Sstevel@tonic-gate extern void s_skipwhite(string *from);
79*0Sstevel@tonic-gate extern string *s_tok(string*, char*);
80*0Sstevel@tonic-gate extern void s_tolower(string*);
81*0Sstevel@tonic-gate #else
82*0Sstevel@tonic-gate extern string *s_append();
83*0Sstevel@tonic-gate extern string *s_array();
84*0Sstevel@tonic-gate extern string *s_copy();
85*0Sstevel@tonic-gate extern void s_free();
86*0Sstevel@tonic-gate extern int s_grow();
87*0Sstevel@tonic-gate extern string *s_new();
88*0Sstevel@tonic-gate extern string *s_parse();
89*0Sstevel@tonic-gate extern char *s_read_line();
90*0Sstevel@tonic-gate extern size_t s_read_to_eof();
91*0Sstevel@tonic-gate extern string *s_seq_read();
92*0Sstevel@tonic-gate extern void s_skipwhite();
93*0Sstevel@tonic-gate extern string *s_tok();
94*0Sstevel@tonic-gate extern void s_tolower();
95*0Sstevel@tonic-gate #endif
96*0Sstevel@tonic-gate 
97*0Sstevel@tonic-gate /* controlling the action of s_seq_read */
98*0Sstevel@tonic-gate #define TOKEN 0		/* read the next whitespace delimited token */
99*0Sstevel@tonic-gate #define LINE 1		/* read the next logical input line */
100*0Sstevel@tonic-gate #define s_getline(a,b) s_seq_read(a,b,LINE)
101*0Sstevel@tonic-gate #define s_gettoken(a,b) s_seq_read(a,b,TOKEN)
102*0Sstevel@tonic-gate 
103*0Sstevel@tonic-gate #endif /* _S_STRING_H */
104