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/*
* dyna.h -- ưŪ礭ʤХåե
* Copyright (C) 1991-1993 by candy
* Thu Oct 31 10:13:53 JST 1996
* DYNA_IZ() פ
* Sat May 3 00:27:48 JST 1997
* BOGUS_REALLOC
*/
/*
* $Id: dyna.h,v 3.6 1996/11/28 09:01:21 candy Exp $
*/
#ifndef __DYNA_H /* [ */
#define __DYNA_H
#ifdef BOGUS_REALLOC
#undef realloc
#define realloc(p,s) ((p)?((realloc)(p,s)):malloc(s))
#endif
/*
* NAME
* STRUCT_DYNA - ¤Τ(ΰ)
*
* SYNOPSIS
* struct DYNA STRUCT_DYNA(TYPE);
*
* DESCRIPTION
* TYPE ǤȤưŪ礭ʤ¤
* struct DYNA
* ޤ
*
* EXAPMLE
* struct CHAR_BUF STRUCT_DYNA(char); ʸХåե
* struct LIST_BUF STRUCT_DYNA(char *); ʸΥꥹ
* Τ褦ޤ
* TYPE νˤ¤äơ
* TYPE * identifier;
* ˤơidentifier TYPE ؤΥݥȤʤ褦ʤΤޤ
* 㤨
* STRUCT_DYNA(char **) Ϥ
* STRUCT_DYNA(int (*)()) ϤǤ
*/
#define STRUCT_DYNA(TYPE) \
{ \
unsigned int more, size, used; \
TYPE *buf; \
TYPE *spare; \
}
/*
* NAME
* DYNA_IZ - ¤Τν
*
* SYNOPSIS
* void DYNA_IZ(struct DYNA *dyna, unsigned int nmore);
*
* DESCRIPTION
* ¤Τޤ
* dyna ˤ STRUCT_DYNA ¤ΤΥɥ쥹Ϳޤ
* nmore ˤϰ٤äǤοꤷޤ
*
* EXAMPLE
* struct LIST_BUF STRUCT_DYNA(char *) list_buf;
* λ
* DYNA_IZ(&list_buf, 64);
* Τ褦˽ޤ
*/
#define DYNA_IZ(dyna, nmore) ((void)( \
(dyna)->more = (nmore), \
(dyna)->used = (dyna)->size = 0, \
(dyna)->buf = (void *)0 \
))
/*
* NAME
* DYNA_BRK - γ
*
* SYNOPSIS
* TYPE *DYNA_BRK(struct DYNA *dyna, unsigned int nmore);
*
* DESCRIPTION
* ¤Τ nmore Ĥ礷ޤ
* DYNA_NEXT() ưŪ˼¹ԤΤ̤ϴطޤ
* ʤ NULL ʳ֤Ԥʤ NULL ֤ޤ
*
* EXAMPLE
* struct LIST_BUF STRUCT_DYNA(char *) list_buf;
* DYNA_IZ(&list_buf, 64);
* λ
* if (DYNA_BRK(&list_buf, 16) == NULL)
* goto no_memory;
* ʤɤȤޤ
*/
#define DYNA_BRK(dyna, nmore) ( \
(dyna)->spare = (dyna)->buf, \
(dyna)->size += (nmore), \
(dyna)->buf = realloc((dyna)->buf, (dyna)->size * sizeof((dyna)->buf[0])), \
(((dyna)->buf != (void *)0) ? (dyna)->buf \
: ((dyna)->buf = (dyna)->spare, \
(dyna)->size -= (nmore), \
(void *)0)) \
)
/*
* NAME
* DYNA_NEXT - Хåեγ
*
* SYNOPSIS
* TYPE *DYNA_NEXT(struct DYNA *dyna);
*
* DESCRIPTION
* οǤΥɥ쥹֤ޤ
* ΰ褬 1 ޤ
* ʤ DYNA_BRK() ƤӽФޤ
* Ԥʤ NULL ֤ޤ
*
* EXAMPLE
* struct LIST_BUF STRUCT_DYNA(char *)list_buf;
* char **next;
* DYNA_IZ(&list_buf, 64);
* λ
* if ((next = DYNA_NEXT(&list_buf)) == NULL)
* goto no_memory;
* *next = malloc(256);
* ʤɤȤޤ
*/
#define DYNA_NEXT(dyna) ( \
((dyna)->used >= (dyna)->size && DYNA_BRK(dyna, \
((dyna)->more ? (dyna)->more : 256)) == (void *)0) \
? (void *)0 \
: (dyna)->buf + (dyna)->used++ \
)
/*
* NAME
* DYNA_ALLOC - Хåեγ
*
* SYNOPSIS
* TYPE *DYNA_ALLOC(struct DYNA *dyna, unsigned int n);
*
* DESCRIPTION
* ο n ĤϢ³ǤΥɥ쥹֤ޤ
* ΰ褬 n ޤ
* ʤ DYNA_BRK() ƤӽФޤ
* Ԥʤ NULL ֤ޤ
*
* EXAMPLE
* struct CHAR_BUF STRUCT_DYNA(char) char_buf;
* char *next;
* DYNA_IZ(&char_buf, 256);
* λ
* if ((next = DYNA_ALLOC(&char_buf, strlen(s) + 1)) == NULL)
* goto no_memory;
* strcpy(next, s);
* ʤɤȤޤ
*/
#define DYNA_ALLOC(dyna, nmore) ( \
((dyna)->used + (nmore) > (dyna)->size && DYNA_BRK(dyna, (dyna)->more + (nmore)) == (void *)0) \
? ((void *)0)\
: ((dyna)->used += (nmore), (dyna)->buf + (dyna)->used - (nmore))\
)
/*
* NAME
* DYNA_RESET - Хåեˤ
*
* SYNOPSIS
* void DYNA_RESET(struct DYNA *dyna)
*
* DESCRIPTION
* Хåեˤޤ(ΰ 0 ˤޤ)
* dyna ˤ STRUCT_DYNA ¤ΤΥɥ쥹Ϳޤ
*/
#define DYNA_RESET(dyna) ((void)((dyna)->used = 0))
/*
* NAME
* DYNA_UNGROW - Хåեν̾
*
* SYNOPSIS
* void DYNA_UNGROW(struct DYNA *dyna, unsigned int n);
*
* DESCRIPTION
* Хåե礭(ΰ) 0 ǤʤСn ʬ̾ޤ
*
*/
#define DYNA_UNGROW(dyna, n) ((void)((dyna)->used > (n) ? ((dyna)->used -= (n)) : ((dyna)->used = 0)))
/*
* NAME
* DYNA_BUF - ХåեΥɥ쥹
*
* SYNOPSIS
* TYPE *DYNA_BUF(struct DYNA *dyna);
*
* DESCRIPTION
* ХåեκǽǤΥɥ쥹֤ޤ
* DYNA_BRK() DYNA_NEXT() ˤäͤѲޤΤǡ
* ƤӽФϰ̵ͤˤʤޤ
*/
#define DYNA_BUF(dyna) ((dyna)->buf)
/*
* NAME
* DYNA_USED - Хåե礭
*
* SYNOPSIS
* unsigned int DYNA_USED(struct DYNA *dyna);
*
* DESCRIPTION
* Хåե礭֤ޤ
* DYNA_IZ() ľ 0 ǡ
* DYNA_NEXT() + 1 ޤ
*/
#define DYNA_USED(dyna) ((dyna)->used)
#endif /* ] !__DYNA_H */
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