1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1982-2011 AT&T Intellectual Property * 5* and is licensed under the * 6* Common Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.opensource.org/licenses/cpl1.0.txt * 11* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12* * 13* Information and Software Systems Research * 14* AT&T Research * 15* Florham Park NJ * 16* * 17* David Korn <dgk@research.att.com> * 18* * 19***********************************************************************/ 20#pragma prototyped 21#ifndef HIST_VERSION 22/* 23 * Interface for history mechanism 24 * written by David Korn 25 * 26 */ 27 28#include <ast.h> 29 30#define HIST_CHAR '!' 31#define HIST_VERSION 1 /* history file format version no. */ 32 33typedef struct 34{ 35 Sfdisc_t histdisc; /* discipline for history */ 36 Sfio_t *histfp; /* history file stream pointer */ 37 char *histname; /* name of history file */ 38 int32_t histind; /* current command number index */ 39 int histsize; /* number of accessible history lines */ 40#ifdef _HIST_PRIVATE 41 _HIST_PRIVATE 42#endif /* _HIST_PRIVATE */ 43} History_t; 44 45typedef struct 46{ 47 int hist_command; 48 int hist_line; 49 int hist_char; 50} Histloc_t; 51 52/* the following are readonly */ 53extern const char hist_fname[]; 54 55extern int _Hist; 56#define hist_min(hp) ((_Hist=((int)((hp)->histind-(hp)->histsize)))>=0?_Hist:0) 57#define hist_max(hp) ((int)((hp)->histind)) 58/* these are the history interface routines */ 59extern int sh_histinit(void *); 60extern void hist_cancel(History_t*); 61extern void hist_close(History_t*); 62extern int hist_copy(char*, int, int, int); 63extern void hist_eof(History_t*); 64extern Histloc_t hist_find(History_t*,char*,int, int, int); 65extern void hist_flush(History_t*); 66extern void hist_list(History_t*,Sfio_t*, off_t, int, char*); 67extern int hist_match(History_t*,off_t, char*, int*); 68extern off_t hist_tell(History_t*,int); 69extern off_t hist_seek(History_t*,int); 70extern char *hist_word(char*, int, int); 71#if SHOPT_ESH 72 extern Histloc_t hist_locate(History_t*,int, int, int); 73#endif /* SHOPT_ESH */ 74 75#endif /* HIST_VERSION */ 76