s_string.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1999, by Sun Microsystems, Inc.
* All rights reserved.
*/
/* This is a private header file. */
#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.4 */
/* extensible strings */
#ifndef _S_STRING_H
#define _S_STRING_H
#include <string.h>
typedef struct string {
char *base; /* base of string */
char *end; /* end of allocated space+1 */
char *ptr; /* ptr into string */
} string;
/*
* LINT: expect lint warnings from the following macros
* Some macros have an integer at the end, which has null effect according
* to lint, but causes the last expression to be evaluated as an int (didn't
* change this).
*/
#define s_clone(s) s_copy((s)->ptr)
#define s_curlen(s) ((s)->ptr - (s)->base)
#define s_dup(s) s_copy((s)->base)
#define s_getc(s) (*((s)->ptr++))
#define s_peek(s) (*((s)->ptr))
#define s_putc(s,c) (((s)->ptr < (s)->end) ? (*((s)->ptr)++ = (char)(c)) : s_grow((s),(c)))
#define s_reset(s) ((s) ? (*((s)->ptr = (s)->base) = '\0' , (s)) : s_new())
#define s_restart(s) ((s)->ptr = (s)->base , (s))
#define s_skipc(s) ((s)->ptr++)
#define s_space(s) ((s)->end - (s)->base)
#define s_terminate(s) (((s)->ptr < (s)->end) ? (*(s)->ptr = 0) : (s_grow((s),0), (s)->ptr--, 0))
#define s_to_c(s) ((s)->base)
#define s_ptr_to_c(s) ((s)->ptr)
#ifdef __STDC__
extern string *s_append(string *to, char *from);
extern string *s_array(char *, size_t len);
extern string *s_copy(char *);
extern void s_free(string*);
extern int s_grow(string *sp, int c);
extern string *s_new(void);
extern string *s_parse(string *from, string *to);
extern char *s_read_line(FILE *fp, string *to);
extern size_t s_read_to_eof(FILE *fp, string *to);
extern string *s_seq_read(FILE *fp, string *to, int lineortoken);
extern void s_skipwhite(string *from);
extern string *s_tok(string*, char*);
extern void s_tolower(string*);
#else
extern string *s_append();
extern string *s_array();
extern string *s_copy();
extern void s_free();
extern int s_grow();
extern string *s_new();
extern string *s_parse();
extern char *s_read_line();
extern size_t s_read_to_eof();
extern string *s_seq_read();
extern void s_skipwhite();
extern string *s_tok();
extern void s_tolower();
#endif
/* controlling the action of s_seq_read */
#define TOKEN 0 /* read the next whitespace delimited token */
#define LINE 1 /* read the next logical input line */
#define s_getline(a,b) s_seq_read(a,b,LINE)
#define s_gettoken(a,b) s_seq_read(a,b,TOKEN)
#endif /* _S_STRING_H */