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d030d2d2ae
plain 0 should be used. This happens to work because we #define NULL to 0, but is stylistically wrong and can cause problems for people trying to port bits of code to other environments. PR: 2752 Submitted by: Arne Henrik Juul <arnej@imf.unit.no>
452 lines
8.9 KiB
C
452 lines
8.9 KiB
C
/*-
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)cmd1.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include "rcv.h"
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#include "extern.h"
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/*
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* Mail -- a mail program
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*
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* User commands.
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*/
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/*
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* Print the current active headings.
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* Don't change dot if invoker didn't give an argument.
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*/
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static int screen;
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int
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headers(msgvec)
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int *msgvec;
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{
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register int n, mesg, flag;
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register struct message *mp;
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int size;
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size = screensize();
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n = msgvec[0];
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if (n != 0)
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screen = (n-1)/size;
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if (screen < 0)
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screen = 0;
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mp = &message[screen * size];
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if (mp >= &message[msgCount])
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mp = &message[msgCount - size];
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if (mp < &message[0])
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mp = &message[0];
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flag = 0;
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mesg = mp - &message[0];
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if (dot != &message[n-1])
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dot = mp;
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for (; mp < &message[msgCount]; mp++) {
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mesg++;
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if (mp->m_flag & MDELETED)
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continue;
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if (flag++ >= size)
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break;
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printhead(mesg);
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}
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if (flag == 0) {
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printf("No more mail.\n");
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return(1);
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}
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return(0);
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}
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/*
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* Scroll to the next/previous screen
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*/
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int
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scroll(arg)
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char arg[];
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{
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register int s, size;
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int cur[1];
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cur[0] = 0;
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size = screensize();
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s = screen;
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switch (*arg) {
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case 0:
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case '+':
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s++;
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if (s * size > msgCount) {
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printf("On last screenful of messages\n");
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return(0);
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}
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screen = s;
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break;
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case '-':
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if (--s < 0) {
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printf("On first screenful of messages\n");
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return(0);
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}
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screen = s;
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break;
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default:
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printf("Unrecognized scrolling command \"%s\"\n", arg);
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return(1);
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}
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return(headers(cur));
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}
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/*
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* Compute screen size.
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*/
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int
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screensize()
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{
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int s;
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char *cp;
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if ((cp = value("screen")) != NOSTR && (s = atoi(cp)) > 0)
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return s;
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return screenheight - 4;
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}
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/*
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* Print out the headlines for each message
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* in the passed message list.
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*/
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int
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from(msgvec)
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int *msgvec;
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{
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register int *ip;
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for (ip = msgvec; *ip != 0; ip++)
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printhead(*ip);
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if (--ip >= msgvec)
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dot = &message[*ip - 1];
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return(0);
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}
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/*
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* Print out the header of a specific message.
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* This is a slight improvement to the standard one.
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*/
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void
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printhead(mesg)
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int mesg;
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{
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struct message *mp;
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char headline[LINESIZE], wcount[LINESIZE], *subjline, dispc, curind;
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char pbuf[BUFSIZ];
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struct headline hl;
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int subjlen;
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char *name;
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mp = &message[mesg-1];
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(void) readline(setinput(mp), headline, LINESIZE);
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if ((subjline = hfield("subject", mp)) == NOSTR)
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subjline = hfield("subj", mp);
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/*
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* Bletch!
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*/
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curind = dot == mp ? '>' : ' ';
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dispc = ' ';
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if (mp->m_flag & MSAVED)
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dispc = '*';
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if (mp->m_flag & MPRESERVE)
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dispc = 'P';
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if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
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dispc = 'N';
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if ((mp->m_flag & (MREAD|MNEW)) == 0)
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dispc = 'U';
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if (mp->m_flag & MBOX)
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dispc = 'M';
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parse(headline, &hl, pbuf);
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sprintf(wcount, "%3d/%-5ld", mp->m_lines, mp->m_size);
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subjlen = screenwidth - 50 - strlen(wcount);
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name = value("show-rcpt") != NOSTR ?
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skin(hfield("to", mp)) : nameof(mp, 0);
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if (subjline == NOSTR || subjlen < 0) /* pretty pathetic */
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printf("%c%c%3d %-20.20s %16.16s %s\n",
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curind, dispc, mesg, name, hl.l_date, wcount);
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else
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printf("%c%c%3d %-20.20s %16.16s %s \"%.*s\"\n",
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curind, dispc, mesg, name, hl.l_date, wcount,
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subjlen, subjline);
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}
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/*
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* Print out the value of dot.
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*/
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int
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pdot()
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{
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printf("%d\n", dot - &message[0] + 1);
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return(0);
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}
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/*
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* Print out all the possible commands.
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*/
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int
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pcmdlist()
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{
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register struct cmd *cp;
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register int cc;
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extern struct cmd cmdtab[];
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printf("Commands are:\n");
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for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
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cc += strlen(cp->c_name) + 2;
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if (cc > 72) {
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printf("\n");
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cc = strlen(cp->c_name) + 2;
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}
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if ((cp+1)->c_name != NOSTR)
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printf("%s, ", cp->c_name);
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else
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printf("%s\n", cp->c_name);
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}
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return(0);
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}
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/*
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* Paginate messages, honor ignored fields.
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*/
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int
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more(msgvec)
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int *msgvec;
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{
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return (type1(msgvec, 1, 1));
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}
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/*
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* Paginate messages, even printing ignored fields.
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*/
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int
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More(msgvec)
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int *msgvec;
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{
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return (type1(msgvec, 0, 1));
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}
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/*
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* Type out messages, honor ignored fields.
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*/
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int
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type(msgvec)
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int *msgvec;
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{
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return(type1(msgvec, 1, 0));
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}
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/*
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* Type out messages, even printing ignored fields.
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*/
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int
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Type(msgvec)
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int *msgvec;
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{
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return(type1(msgvec, 0, 0));
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}
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/*
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* Type out the messages requested.
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*/
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jmp_buf pipestop;
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int
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type1(msgvec, doign, page)
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int *msgvec;
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int doign, page;
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{
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register *ip;
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register struct message *mp;
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register char *cp;
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int nlines;
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FILE *obuf;
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obuf = stdout;
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if (setjmp(pipestop))
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goto close_pipe;
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if (value("interactive") != NOSTR &&
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(page || (cp = value("crt")) != NOSTR)) {
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nlines = 0;
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if (!page) {
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for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
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nlines += message[*ip - 1].m_lines;
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}
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if (page || nlines > (*cp ? atoi(cp) : realscreenheight)) {
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cp = value("PAGER");
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if (cp == NULL || *cp == '\0')
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cp = _PATH_MORE;
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obuf = Popen(cp, "w");
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if (obuf == NULL) {
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perror(cp);
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obuf = stdout;
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} else
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signal(SIGPIPE, brokpipe);
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}
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}
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for (ip = msgvec; *ip && ip - msgvec < msgCount; ip++) {
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mp = &message[*ip - 1];
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touch(mp);
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dot = mp;
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if (value("quiet") == NOSTR)
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fprintf(obuf, "Message %d:\n", *ip);
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(void) send(mp, obuf, doign ? ignore : 0, NOSTR);
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}
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close_pipe:
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if (obuf != stdout) {
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/*
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* Ignore SIGPIPE so it can't cause a duplicate close.
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*/
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signal(SIGPIPE, SIG_IGN);
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Pclose(obuf);
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signal(SIGPIPE, SIG_DFL);
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}
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return(0);
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}
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/*
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* Respond to a broken pipe signal --
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* probably caused by quitting more.
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*/
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void
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brokpipe(signo)
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int signo;
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{
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longjmp(pipestop, 1);
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}
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/*
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* Print the top so many lines of each desired message.
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* The number of lines is taken from the variable "toplines"
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* and defaults to 5.
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*/
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int
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top(msgvec)
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int *msgvec;
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{
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register int *ip;
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register struct message *mp;
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int c, topl, lines, lineb;
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char *valtop, linebuf[LINESIZE];
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FILE *ibuf;
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topl = 5;
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valtop = value("toplines");
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if (valtop != NOSTR) {
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topl = atoi(valtop);
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if (topl < 0 || topl > 10000)
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topl = 5;
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}
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lineb = 1;
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for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
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mp = &message[*ip - 1];
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touch(mp);
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dot = mp;
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if (value("quiet") == NOSTR)
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printf("Message %d:\n", *ip);
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ibuf = setinput(mp);
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c = mp->m_lines;
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if (!lineb)
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printf("\n");
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for (lines = 0; lines < c && lines <= topl; lines++) {
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if (readline(ibuf, linebuf, LINESIZE) < 0)
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break;
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puts(linebuf);
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lineb = blankline(linebuf);
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}
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}
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return(0);
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}
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/*
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* Touch all the given messages so that they will
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* get mboxed.
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*/
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int
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stouch(msgvec)
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int msgvec[];
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{
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register int *ip;
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for (ip = msgvec; *ip != 0; ip++) {
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dot = &message[*ip-1];
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dot->m_flag |= MTOUCH;
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dot->m_flag &= ~MPRESERVE;
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}
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return(0);
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}
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/*
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* Make sure all passed messages get mboxed.
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*/
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int
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mboxit(msgvec)
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int msgvec[];
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{
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register int *ip;
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for (ip = msgvec; *ip != 0; ip++) {
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dot = &message[*ip-1];
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dot->m_flag |= MTOUCH|MBOX;
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dot->m_flag &= ~MPRESERVE;
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}
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return(0);
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}
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/*
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* List the folders the user currently has.
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*/
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int
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folders()
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{
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char dirname[BUFSIZ];
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char *cmd;
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if (getfold(dirname) < 0) {
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printf("No value set for \"folder\"\n");
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return 1;
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}
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if ((cmd = value("LISTER")) == NOSTR)
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cmd = "ls";
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(void) run_command(cmd, 0, -1, -1, dirname, NOSTR, NOSTR);
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return 0;
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}
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