14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1982-2010 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 78462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * David Korn <dgk@research.att.com> * 184887Schin * * 194887Schin ***********************************************************************/ 204887Schin #pragma prototyped 214887Schin #ifndef HIST_VERSION 224887Schin /* 234887Schin * Interface for history mechanism 244887Schin * written by David Korn 254887Schin * 264887Schin */ 274887Schin 284887Schin #include <ast.h> 294887Schin 304887Schin #define HIST_CHAR '!' 314887Schin #define HIST_VERSION 1 /* history file format version no. */ 324887Schin 334887Schin typedef struct 344887Schin { 354887Schin Sfdisc_t histdisc; /* discipline for history */ 364887Schin Sfio_t *histfp; /* history file stream pointer */ 374887Schin char *histname; /* name of history file */ 384887Schin int32_t histind; /* current command number index */ 394887Schin int histsize; /* number of accessible history lines */ 404887Schin #ifdef _HIST_PRIVATE 414887Schin _HIST_PRIVATE 424887Schin #endif /* _HIST_PRIVATE */ 434887Schin } History_t; 444887Schin 454887Schin typedef struct 464887Schin { 474887Schin int hist_command; 484887Schin int hist_line; 494887Schin int hist_char; 504887Schin } Histloc_t; 514887Schin 524887Schin /* the following are readonly */ 534887Schin extern const char hist_fname[]; 544887Schin 554887Schin extern int _Hist; 564887Schin #define hist_min(hp) ((_Hist=((int)((hp)->histind-(hp)->histsize)))>=0?_Hist:0) 574887Schin #define hist_max(hp) ((int)((hp)->histind)) 584887Schin /* these are the history interface routines */ 598462SApril.Chin@Sun.COM extern int sh_histinit(void *); 604887Schin extern void hist_cancel(History_t*); 614887Schin extern void hist_close(History_t*); 624887Schin extern int hist_copy(char*, int, int, int); 634887Schin extern void hist_eof(History_t*); 644887Schin extern Histloc_t hist_find(History_t*,char*,int, int, int); 654887Schin extern void hist_flush(History_t*); 664887Schin extern void hist_list(History_t*,Sfio_t*, off_t, int, char*); 674887Schin extern int hist_match(History_t*,off_t, char*, int*); 684887Schin extern off_t hist_tell(History_t*,int); 694887Schin extern off_t hist_seek(History_t*,int); 704887Schin extern char *hist_word(char*, int, int); 714887Schin #if SHOPT_ESH 724887Schin extern Histloc_t hist_locate(History_t*,int, int, int); 734887Schin #endif /* SHOPT_ESH */ 744887Schin 754887Schin #endif /* HIST_VERSION */ 76