1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright (c) 1999, by Sun Microsystems, Inc. 28 * All rights reserved. 29 */ 30 31 /* This is a private header file. */ 32 33 /* extensible strings */ 34 35 #ifndef _S_STRING_H 36 #define _S_STRING_H 37 38 #include <string.h> 39 40 typedef struct string { 41 char *base; /* base of string */ 42 char *end; /* end of allocated space+1 */ 43 char *ptr; /* ptr into string */ 44 } string; 45 46 /* 47 * LINT: expect lint warnings from the following macros 48 * Some macros have an integer at the end, which has null effect according 49 * to lint, but causes the last expression to be evaluated as an int (didn't 50 * change this). 51 */ 52 #define s_clone(s) s_copy((s)->ptr) 53 #define s_curlen(s) ((s)->ptr - (s)->base) 54 #define s_dup(s) s_copy((s)->base) 55 #define s_getc(s) (*((s)->ptr++)) 56 #define s_peek(s) (*((s)->ptr)) 57 #define s_putc(s, c) (((s)->ptr < (s)->end) ? \ 58 (*((s)->ptr)++ = (char)(c)) : s_grow((s), (c))) 59 #define s_reset(s) ((s) ? (*((s)->ptr = (s)->base) = '\0', (s)) : s_new()) 60 #define s_restart(s) ((s)->ptr = (s)->base) 61 #define s_skipc(s) ((s)->ptr++) 62 #define s_space(s) ((s)->end - (s)->base) 63 #define s_terminate(s) (((s)->ptr < (s)->end) ? \ 64 (*(s)->ptr = 0) : (s_grow((s), 0), (s)->ptr--, 0)) 65 #define s_to_c(s) ((s)->base) 66 #define s_ptr_to_c(s) ((s)->ptr) 67 68 #ifdef __STDC__ 69 extern string *s_append(string *to, char *from); 70 extern string *s_array(char *, size_t len); 71 extern string *s_copy(char *); 72 extern void s_free(string *); 73 extern int s_grow(string *sp, int c); 74 extern string *s_new(void); 75 extern string *s_parse(string *from, string *to); 76 extern char *s_read_line(FILE *fp, string *to); 77 extern size_t s_read_to_eof(FILE *fp, string *to); 78 extern string *s_seq_read(FILE *fp, string *to, int lineortoken); 79 extern void s_skipwhite(string *from); 80 extern string *s_tok(string *, char *); 81 extern void s_tolower(string *); 82 #else 83 extern string *s_append(); 84 extern string *s_array(); 85 extern string *s_copy(); 86 extern void s_free(); 87 extern int s_grow(); 88 extern string *s_new(); 89 extern string *s_parse(); 90 extern char *s_read_line(); 91 extern size_t s_read_to_eof(); 92 extern string *s_seq_read(); 93 extern void s_skipwhite(); 94 extern string *s_tok(); 95 extern void s_tolower(); 96 #endif 97 98 /* controlling the action of s_seq_read */ 99 #define TOKEN 0 /* read the next whitespace delimited token */ 100 #define LINE 1 /* read the next logical input line */ 101 #define s_getline(a, b) s_seq_read(a, b, LINE) 102 #define s_gettoken(a, b) s_seq_read(a, b, TOKEN) 103 104 #endif /* _S_STRING_H */ 105