11573Srgrimes/*- 21573Srgrimes * Copyright (c) 1992, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * This code is derived from software contributed to Berkeley by 61573Srgrimes * Christos Zoulas of Cornell University. 71573Srgrimes * 81573Srgrimes * Redistribution and use in source and binary forms, with or without 91573Srgrimes * modification, are permitted provided that the following conditions 101573Srgrimes * are met: 111573Srgrimes * 1. Redistributions of source code must retain the above copyright 121573Srgrimes * notice, this list of conditions and the following disclaimer. 131573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141573Srgrimes * notice, this list of conditions and the following disclaimer in the 151573Srgrimes * documentation and/or other materials provided with the distribution. 16148834Sstefanf * 3. Neither the name of the University nor the names of its contributors 171573Srgrimes * may be used to endorse or promote products derived from this software 181573Srgrimes * without specific prior written permission. 191573Srgrimes * 201573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301573Srgrimes * SUCH DAMAGE. 3184260Sobrien * 32148834Sstefanf * $NetBSD: hist.c,v 1.15 2003/11/01 23:36:39 christos Exp $ 331573Srgrimes */ 341573Srgrimes 351573Srgrimes#if !defined(lint) && !defined(SCCSID) 361573Srgrimesstatic char sccsid[] = "@(#)hist.c 8.1 (Berkeley) 6/4/93"; 371573Srgrimes#endif /* not lint && not SCCSID */ 3884260Sobrien#include <sys/cdefs.h> 3984260Sobrien__FBSDID("$FreeBSD$"); 401573Srgrimes 411573Srgrimes/* 421573Srgrimes * hist.c: History access functions 431573Srgrimes */ 441573Srgrimes#include "sys.h" 451573Srgrimes#include <stdlib.h> 461573Srgrimes#include "el.h" 471573Srgrimes 481573Srgrimes/* hist_init(): 491573Srgrimes * Initialization function. 501573Srgrimes */ 511573Srgrimesprotected int 5284260Sobrienhist_init(EditLine *el) 531573Srgrimes{ 5484260Sobrien 5584260Sobrien el->el_history.fun = NULL; 5684260Sobrien el->el_history.ref = NULL; 5784260Sobrien el->el_history.buf = (char *) el_malloc(EL_BUFSIZ); 5884260Sobrien el->el_history.sz = EL_BUFSIZ; 5984260Sobrien if (el->el_history.buf == NULL) 6084260Sobrien return (-1); 6184260Sobrien el->el_history.last = el->el_history.buf; 6284260Sobrien return (0); 631573Srgrimes} 641573Srgrimes 651573Srgrimes 661573Srgrimes/* hist_end(): 671573Srgrimes * clean up history; 681573Srgrimes */ 691573Srgrimesprotected void 7084260Sobrienhist_end(EditLine *el) 711573Srgrimes{ 7284260Sobrien 7384260Sobrien el_free((ptr_t) el->el_history.buf); 7484260Sobrien el->el_history.buf = NULL; 751573Srgrimes} 761573Srgrimes 771573Srgrimes 781573Srgrimes/* hist_set(): 791573Srgrimes * Set new history interface 801573Srgrimes */ 811573Srgrimesprotected int 8284260Sobrienhist_set(EditLine *el, hist_fun_t fun, ptr_t ptr) 8384260Sobrien{ 841573Srgrimes 8584260Sobrien el->el_history.ref = ptr; 8684260Sobrien el->el_history.fun = fun; 8784260Sobrien return (0); 881573Srgrimes} 891573Srgrimes 901573Srgrimes 911573Srgrimes/* hist_get(): 921573Srgrimes * Get a history line and update it in the buffer. 931573Srgrimes * eventno tells us the event to get. 941573Srgrimes */ 951573Srgrimesprotected el_action_t 9684260Sobrienhist_get(EditLine *el) 971573Srgrimes{ 9884260Sobrien const char *hp; 9984260Sobrien int h; 1001573Srgrimes 10184260Sobrien if (el->el_history.eventno == 0) { /* if really the current line */ 10284260Sobrien (void) strncpy(el->el_line.buffer, el->el_history.buf, 10384260Sobrien el->el_history.sz); 10484260Sobrien el->el_line.lastchar = el->el_line.buffer + 10584260Sobrien (el->el_history.last - el->el_history.buf); 1061573Srgrimes 1071573Srgrimes#ifdef KSHVI 10884260Sobrien if (el->el_map.type == MAP_VI) 10984260Sobrien el->el_line.cursor = el->el_line.buffer; 11084260Sobrien else 1111573Srgrimes#endif /* KSHVI */ 11284260Sobrien el->el_line.cursor = el->el_line.lastchar; 1131573Srgrimes 11484260Sobrien return (CC_REFRESH); 11584260Sobrien } 11684260Sobrien if (el->el_history.ref == NULL) 11784260Sobrien return (CC_ERROR); 1181573Srgrimes 11984260Sobrien hp = HIST_FIRST(el); 1201573Srgrimes 12184260Sobrien if (hp == NULL) 12284260Sobrien return (CC_ERROR); 1231573Srgrimes 12484260Sobrien for (h = 1; h < el->el_history.eventno; h++) 12584260Sobrien if ((hp = HIST_NEXT(el)) == NULL) { 12684260Sobrien el->el_history.eventno = h; 12784260Sobrien return (CC_ERROR); 12884260Sobrien } 129148834Sstefanf (void) strlcpy(el->el_line.buffer, hp, 13084260Sobrien (size_t)(el->el_line.limit - el->el_line.buffer)); 13184260Sobrien el->el_line.lastchar = el->el_line.buffer + strlen(el->el_line.buffer); 1321573Srgrimes 133148834Sstefanf if (el->el_line.lastchar > el->el_line.buffer 134148834Sstefanf && el->el_line.lastchar[-1] == '\n') 135148834Sstefanf el->el_line.lastchar--; 136148834Sstefanf if (el->el_line.lastchar > el->el_line.buffer 137148834Sstefanf && el->el_line.lastchar[-1] == ' ') 138148834Sstefanf el->el_line.lastchar--; 1391573Srgrimes#ifdef KSHVI 14084260Sobrien if (el->el_map.type == MAP_VI) 14184260Sobrien el->el_line.cursor = el->el_line.buffer; 14284260Sobrien else 1431573Srgrimes#endif /* KSHVI */ 14484260Sobrien el->el_line.cursor = el->el_line.lastchar; 1451573Srgrimes 14684260Sobrien return (CC_REFRESH); 1471573Srgrimes} 1481573Srgrimes 14984260Sobrien 150148834Sstefanf/* hist_command() 151148834Sstefanf * process a history command 1521573Srgrimes */ 1531573Srgrimesprotected int 154148834Sstefanfhist_command(EditLine *el, int argc, const char **argv) 1551573Srgrimes{ 15684260Sobrien const char *str; 157148834Sstefanf int num; 158148834Sstefanf HistEvent ev; 1591573Srgrimes 16084260Sobrien if (el->el_history.ref == NULL) 16184260Sobrien return (-1); 162148834Sstefanf 163148834Sstefanf if (argc == 1 || strcmp(argv[1], "list") == 0) { 164148834Sstefanf /* List history entries */ 165148834Sstefanf 166148834Sstefanf for (str = HIST_LAST(el); str != NULL; str = HIST_PREV(el)) 167148834Sstefanf (void) fprintf(el->el_outfile, "%d %s", 168148834Sstefanf el->el_history.ev.num, str); 169148834Sstefanf return (0); 170148834Sstefanf } 171148834Sstefanf 172148834Sstefanf if (argc != 3) 173148834Sstefanf return (-1); 174148834Sstefanf 175148834Sstefanf num = (int)strtol(argv[2], NULL, 0); 176148834Sstefanf 177148834Sstefanf if (strcmp(argv[1], "size") == 0) 178148834Sstefanf return history(el->el_history.ref, &ev, H_SETSIZE, num); 179148834Sstefanf 180148834Sstefanf if (strcmp(argv[1], "unique") == 0) 181148834Sstefanf return history(el->el_history.ref, &ev, H_SETUNIQUE, num); 182148834Sstefanf 183148834Sstefanf return -1; 1841573Srgrimes} 18584260Sobrien 18684260Sobrien/* hist_enlargebuf() 18784260Sobrien * Enlarge history buffer to specified value. Called from el_enlargebufs(). 18884260Sobrien * Return 0 for failure, 1 for success. 18984260Sobrien */ 19084260Sobrienprotected int 19184260Sobrien/*ARGSUSED*/ 19284260Sobrienhist_enlargebuf(EditLine *el, size_t oldsz, size_t newsz) 19384260Sobrien{ 19484260Sobrien char *newbuf; 19584260Sobrien 19684260Sobrien newbuf = realloc(el->el_history.buf, newsz); 19784260Sobrien if (!newbuf) 19884260Sobrien return 0; 19984260Sobrien 20084260Sobrien (void) memset(&newbuf[oldsz], '\0', newsz - oldsz); 20184260Sobrien 20284260Sobrien el->el_history.last = newbuf + 20384260Sobrien (el->el_history.last - el->el_history.buf); 20484260Sobrien el->el_history.buf = newbuf; 20584260Sobrien el->el_history.sz = newsz; 20684260Sobrien 20784260Sobrien return 1; 20884260Sobrien} 209