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GitHub Repository: att/ast
 Path: blob/master/src/cmd/ksh93/include/history.h
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1982-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                  David Korn <[email protected]>                   *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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#ifndef HIST_VERSION

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/*

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 *	Interface for history mechanism

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 *	written by David Korn

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 *

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 */

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#include	<ast.h>

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#define HIST_CHAR	'!'

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#define HIST_VERSION	1		/* history file format version no. */

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typedef struct 

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{

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	Sfdisc_t	histdisc;	/* discipline for history */

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	Sfio_t		*histfp;	/* history file stream pointer */

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	char		*histname;	/* name of history file */

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	int32_t		histind;	/* current command number index */

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	int		histsize;	/* number of accessible history lines */

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#ifdef _HIST_PRIVATE

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	_HIST_PRIVATE

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#endif /* _HIST_PRIVATE */

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} History_t;

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typedef struct

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{

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	int hist_command;

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	int hist_line;

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	int hist_char;

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} Histloc_t;

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/* the following are readonly */

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extern const char	hist_fname[];

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extern int _Hist;

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#define	hist_min(hp)	((_Hist=((int)((hp)->histind-(hp)->histsize)))>=0?_Hist:0)

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#define	hist_max(hp)	((int)((hp)->histind))

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/* these are the history interface routines */

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extern int		sh_histinit(void *);

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extern void 		hist_cancel(History_t*);

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extern void 		hist_close(History_t*);

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extern int		hist_copy(char*, int, int, int);

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extern void 		hist_eof(History_t*);

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extern Histloc_t	hist_find(History_t*,char*,int, int, int);

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extern void 		hist_flush(History_t*);

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extern void 		hist_list(History_t*,Sfio_t*, off_t, int, char*);

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extern int		hist_match(History_t*,off_t, char*, int*);

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extern off_t		hist_tell(History_t*,int);

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extern off_t		hist_seek(History_t*,int);

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extern char 		*hist_word(char*, int, int);

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#if SHOPT_ESH

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    extern Histloc_t	hist_locate(History_t*,int, int, int);

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#endif	/* SHOPT_ESH */

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#endif /* HIST_VERSION */

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