2 * Copyright (c) 1980, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
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36 static char sccsid[] = "@(#)hist.c 8.1 (Berkeley) 5/31/93";
38 static const char rcsid[] =
43 #include <sys/types.h>
53 static void hfree __P((struct Hist *));
54 static void dohist1 __P((struct Hist *, int *, int, int));
55 static void phist __P((struct Hist *, int));
65 /* throw away null lines */
66 if (sp->next->word[0] == '\n')
68 cp = value(STRhistory);
77 histlen = histlen * 10 + *p++ - '0';
80 for (hp = &Histlist; (np = hp->Hnext) != NULL;)
81 if (eventno - np->Href >= histlen || histlen == 0)
82 hp->Hnext = np->Hnext, hfree(np);
85 (void) enthist(++eventno, sp, 1);
89 enthist(event, lp, docopy)
96 np = (struct Hist *) xmalloc((size_t) sizeof(*np));
97 np->Hnum = np->Href = event;
99 copylex(&np->Hlex, lp);
102 np->Hlex.next = lp->next;
103 lp->next->prev = &np->Hlex;
104 np->Hlex.prev = lp->prev;
105 lp->prev->next = &np->Hlex;
107 np->Hnext = Histlist.Hnext;
127 int n, rflg = 0, hflg = 0;
129 if (getn(value(STRhistory)) == 0)
132 (void) sigsetmask(sigblock(0) & ~sigmask(SIGINT));
133 while (*++v && **v == '-') {
144 case '-': /* ignore multiple '-'s */
147 stderror(ERR_HISTUS);
154 n = getn(value(STRhistory));
156 dohist1(Histlist.Hnext, &n, rflg, hflg);
160 dohist1(hp, np, rflg, hflg)
164 bool print = (*np) > 0;
166 for (; hp != 0; hp = hp->Hnext) {
170 dohist1(hp->Hnext, np, rflg, hflg);
186 (void) fprintf(cshout, "%6d\t", hp->Hnum);
187 prlex(cshout, &hp->Hlex);