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/*
* Copyright (c) 1997, 1998, 1999, 2000, 2002, 2005
* Tama Communications Corporation
*
* This file is part of GNU GLOBAL.
*
* GNU GLOBAL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNU GLOBAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _STRBUF_H
#define _STRBUF_H
#include <stdio.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#ifdef HAVE_STDARG_H
#include <stdarg.h>
#else
#include <varargs.h>
#endif
/* #define STRBUF_LINK */
#define INITIALSIZE 80
#define EXPANDSIZE 80
/* for strbuf_fgets() */
#define STRBUF_APPEND 1
#define STRBUF_NOCRLF 2
typedef struct _strbuf {
#ifdef STRBUF_LINK
struct _strbuf *next;
struct _strbuf *prev;
#endif
char *name;
char *sbuf;
char *endp;
char *curp;
int sbufsize;
int alloc_failed;
} STRBUF;
/*
* STATIC_STRBUF(sb):
*
* This macro is used for static string buffer which is suitable for
* work area and(or) return value of function. The area allocated once
* is repeatedly used though the area is never released.
* You must call strbuf_clear(sb) every time before using.
* You must not call strbuf_close(sb) for it.
*
* Usage:
* function(...) {
* STATIC_STRBUF(sb);
*
* strbuf_clear(sb);
* ...
* strbuf_puts(sb, "xxxxx");
* ...
* return strbuf_value(sb);
* }
*/
#define STATIC_STRBUF(sb) static STRBUF __##sb, *sb = &__##sb
#define strbuf_empty(sb) (sb->sbufsize == 0)
#define strbuf_putc(sb, c) do {\
if (!sb->alloc_failed) {\
if (sb->curp >= sb->endp)\
__strbuf_expandbuf(sb, 0);\
*sb->curp++ = c;\
}\
} while (0)
#define strbuf_reset(sb) do {\
sb->curp = sb->sbuf;\
sb->alloc_failed = 0;\
} while (0)
#define strbuf_puts0(sb, s) do {\
strbuf_puts(sb, s);\
strbuf_putc(sb, '\0');\
} while (0)
#define strbuf_getlen(sb) (sb->curp - sb->sbuf)
#define strbuf_setlen(sb, len) do {\
unsigned int _length = len;\
if (!sb->alloc_failed) {\
if (_length < strbuf_getlen(sb))\
sb->curp = sb->sbuf + _length;\
else if (_length > strbuf_getlen(sb))\
__strbuf_expandbuf(sb, _length - strbuf_getlen(sb));\
}\
} while (0)
#define strbuf_lastchar(sb) (*(sb->curp - 1))
#ifdef DEBUG
void strbuf_dump(char *);
#endif
void __strbuf_expandbuf(STRBUF *, int);
STRBUF *strbuf_open(int);
void strbuf_clear(STRBUF *);
void strbuf_nputs(STRBUF *, const char *, int);
void strbuf_puts(STRBUF *, const char *);
void strbuf_puts_nl(STRBUF *, const char *);
void strbuf_putn(STRBUF *, int);
int strbuf_unputc(STRBUF *, int);
char *strbuf_value(STRBUF *);
void strbuf_trim(STRBUF *);
void strbuf_close(STRBUF *);
char *strbuf_fgets(STRBUF *, FILE *, int);
#ifdef HAVE_STDARG_H
void strbuf_sprintf(STRBUF *sb, const char *s, ...);
#else
void strbuf_sprintf();
#endif
STRBUF *strbuf_open_tempbuf();
void strbuf_release_tempbuf(STRBUF *);
#ifdef STRBUF_LINK
void strbuf_setname(STRBUF *, const char *);
STRBUF *strbuf_getbuf(const char *);
void strbuf_closeall();
#endif
#endif /* ! _STRBUF_H */
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