4.3BSD-UWisc/src/ucb/Mail/cmd1.c
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#ifndef lint
static char *sccsid = "@(#)cmd1.c 5.3 (Berkeley) 9/15/85";
#endif not lint
#include "rcv.h"
#include <sys/stat.h>
/*
* Mail -- a mail program
*
* User commands.
*/
/*
* Print the current active headings.
* Don't change dot if invoker didn't give an argument.
*/
static int screen;
headers(msgvec)
int *msgvec;
{
register int n, mesg, flag;
register struct message *mp;
int size;
size = screensize();
n = msgvec[0];
if (n != 0)
screen = (n-1)/size;
if (screen < 0)
screen = 0;
mp = &message[screen * size];
if (mp >= &message[msgCount])
mp = &message[msgCount - size];
if (mp < &message[0])
mp = &message[0];
flag = 0;
mesg = mp - &message[0];
if (dot != &message[n-1])
dot = mp;
for (; mp < &message[msgCount]; mp++) {
mesg++;
if (mp->m_flag & MDELETED)
continue;
if (flag++ >= size)
break;
printhead(mesg);
sreset();
}
if (flag == 0) {
printf("No more mail.\n");
return(1);
}
return(0);
}
/*
* Set the list of alternate names for out host.
*/
local(namelist)
char **namelist;
{
register int c;
register char **ap, **ap2, *cp;
c = argcount(namelist) + 1;
if (c == 1) {
if (localnames == 0)
return(0);
for (ap = localnames; *ap; ap++)
printf("%s ", *ap);
printf("\n");
return(0);
}
if (localnames != 0)
cfree((char *) localnames);
localnames = (char **) calloc(c, sizeof (char *));
for (ap = namelist, ap2 = localnames; *ap; ap++, ap2++) {
cp = (char *) calloc(strlen(*ap) + 1, sizeof (char));
strcpy(cp, *ap);
*ap2 = cp;
}
*ap2 = 0;
return(0);
}
/*
* Scroll to the next/previous screen
*/
scroll(arg)
char arg[];
{
register int s, size;
int cur[1];
cur[0] = 0;
size = screensize();
s = screen;
switch (*arg) {
case 0:
case '+':
s++;
if (s * size > msgCount) {
printf("On last screenful of messages\n");
return(0);
}
screen = s;
break;
case '-':
if (--s < 0) {
printf("On first screenful of messages\n");
return(0);
}
screen = s;
break;
default:
printf("Unrecognized scrolling command \"%s\"\n", arg);
return(1);
}
return(headers(cur));
}
/*
* Compute what the screen size should be.
* We use the following algorithm:
* If user specifies with screen option, use that.
* If baud rate < 1200, use 5
* If baud rate = 1200, use 10
* If baud rate > 1200, use 20
*/
screensize()
{
register char *cp;
register int s;
#ifdef TIOCGWINSZ
struct winsize ws;
#endif
if ((cp = value("screen")) != NOSTR) {
s = atoi(cp);
if (s > 0)
return(s);
}
if (baud < B1200)
s = 5;
else if (baud == B1200)
s = 10;
#ifdef TIOCGWINSZ
else if (ioctl(fileno(stdout), TIOCGWINSZ, &ws) == 0 && ws.ws_row != 0)
s = ws.ws_row - 4;
#endif
else
s = 20;
return(s);
}
/*
* Print out the headlines for each message
* in the passed message list.
*/
from(msgvec)
int *msgvec;
{
register int *ip;
for (ip = msgvec; *ip != NULL; ip++) {
printhead(*ip);
sreset();
}
if (--ip >= msgvec)
dot = &message[*ip - 1];
return(0);
}
/*
* Print out the header of a specific message.
* This is a slight improvement to the standard one.
*/
printhead(mesg)
{
struct message *mp;
FILE *ibuf;
char headline[LINESIZE], wcount[LINESIZE], *subjline, dispc, curind;
char pbuf[BUFSIZ];
int s;
struct headline hl;
register char *cp;
mp = &message[mesg-1];
ibuf = setinput(mp);
readline(ibuf, headline);
subjline = hfield("subject", mp);
if (subjline == NOSTR)
subjline = hfield("subj", mp);
/*
* Bletch!
*/
if (subjline != NOSTR && strlen(subjline) > 28)
subjline[29] = '\0';
curind = dot == mp ? '>' : ' ';
dispc = ' ';
if (mp->m_flag & MSAVED)
dispc = '*';
if (mp->m_flag & MPRESERVE)
dispc = 'P';
if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
dispc = 'N';
if ((mp->m_flag & (MREAD|MNEW)) == 0)
dispc = 'U';
if (mp->m_flag & MBOX)
dispc = 'M';
parse(headline, &hl, pbuf);
sprintf(wcount, " %d/%ld", mp->m_lines, mp->m_size);
s = strlen(wcount);
cp = wcount + s;
while (s < 7)
s++, *cp++ = ' ';
*cp = '\0';
if (subjline != NOSTR)
printf("%c%c%3d %-8s %16.16s %s \"%s\"\n", curind, dispc, mesg,
nameof(mp, 0), hl.l_date, wcount, subjline);
else
printf("%c%c%3d %-8s %16.16s %s\n", curind, dispc, mesg,
nameof(mp, 0), hl.l_date, wcount);
}
/*
* Print out the value of dot.
*/
pdot()
{
printf("%d\n", dot - &message[0] + 1);
return(0);
}
/*
* Print out all the possible commands.
*/
pcmdlist()
{
register struct cmd *cp;
register int cc;
extern struct cmd cmdtab[];
printf("Commands are:\n");
for (cc = 0, cp = cmdtab; cp->c_name != NULL; cp++) {
cc += strlen(cp->c_name) + 2;
if (cc > 72) {
printf("\n");
cc = strlen(cp->c_name) + 2;
}
if ((cp+1)->c_name != NOSTR)
printf("%s, ", cp->c_name);
else
printf("%s\n", cp->c_name);
}
return(0);
}
/*
* Paginate messages, honor ignored fields.
*/
more(msgvec)
int *msgvec;
{
return (type1(msgvec, 1, 1));
}
/*
* Paginate messages, even printing ignored fields.
*/
More(msgvec)
int *msgvec;
{
return (type1(msgvec, 0, 1));
}
/*
* Type out messages, honor ignored fields.
*/
type(msgvec)
int *msgvec;
{
return(type1(msgvec, 1, 0));
}
/*
* Type out messages, even printing ignored fields.
*/
Type(msgvec)
int *msgvec;
{
return(type1(msgvec, 0, 0));
}
/*
* Type out the messages requested.
*/
jmp_buf pipestop;
type1(msgvec, doign, page)
int *msgvec;
{
register *ip;
register struct message *mp;
register int mesg;
register char *cp;
int c, nlines;
int brokpipe();
FILE *ibuf, *obuf;
obuf = stdout;
if (setjmp(pipestop)) {
if (obuf != stdout) {
pipef = NULL;
pclose(obuf);
}
sigset(SIGPIPE, SIG_DFL);
return(0);
}
if (intty && outtty && (page || (cp = value("crt")) != NOSTR)) {
nlines = 0;
if (!page) {
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
nlines += message[*ip - 1].m_lines;
}
if (page || nlines > atoi(cp)) {
cp = value("PAGER");
if (cp == NULL || *cp == '\0')
cp = MORE;
obuf = popen(cp, "w");
if (obuf == NULL) {
perror(cp);
obuf = stdout;
}
else {
pipef = obuf;
sigset(SIGPIPE, brokpipe);
}
}
}
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
mesg = *ip;
touch(mesg);
mp = &message[mesg-1];
dot = mp;
print(mp, obuf, doign);
}
if (obuf != stdout) {
pipef = NULL;
pclose(obuf);
}
sigset(SIGPIPE, SIG_DFL);
return(0);
}
/*
* Respond to a broken pipe signal --
* probably caused by using quitting more.
*/
brokpipe()
{
# ifndef VMUNIX
signal(SIGPIPE, brokpipe);
# endif
longjmp(pipestop, 1);
}
/*
* Print the indicated message on standard output.
*/
print(mp, obuf, doign)
register struct message *mp;
FILE *obuf;
{
if (value("quiet") == NOSTR)
fprintf(obuf, "Message %2d:\n", mp - &message[0] + 1);
touch(mp - &message[0] + 1);
send(mp, obuf, doign);
}
/*
* Print the top so many lines of each desired message.
* The number of lines is taken from the variable "toplines"
* and defaults to 5.
*/
top(msgvec)
int *msgvec;
{
register int *ip;
register struct message *mp;
register int mesg;
int c, topl, lines, lineb;
char *valtop, linebuf[LINESIZE];
FILE *ibuf;
topl = 5;
valtop = value("toplines");
if (valtop != NOSTR) {
topl = atoi(valtop);
if (topl < 0 || topl > 10000)
topl = 5;
}
lineb = 1;
for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
mesg = *ip;
touch(mesg);
mp = &message[mesg-1];
dot = mp;
if (value("quiet") == NOSTR)
printf("Message %2d:\n", mesg);
ibuf = setinput(mp);
c = mp->m_lines;
if (!lineb)
printf("\n");
for (lines = 0; lines < c && lines <= topl; lines++) {
if (readline(ibuf, linebuf) <= 0)
break;
puts(linebuf);
lineb = blankline(linebuf);
}
}
return(0);
}
/*
* Touch all the given messages so that they will
* get mboxed.
*/
stouch(msgvec)
int msgvec[];
{
register int *ip;
for (ip = msgvec; *ip != 0; ip++) {
dot = &message[*ip-1];
dot->m_flag |= MTOUCH;
dot->m_flag &= ~MPRESERVE;
}
return(0);
}
/*
* Make sure all passed messages get mboxed.
*/
mboxit(msgvec)
int msgvec[];
{
register int *ip;
for (ip = msgvec; *ip != 0; ip++) {
dot = &message[*ip-1];
dot->m_flag |= MTOUCH|MBOX;
dot->m_flag &= ~MPRESERVE;
}
return(0);
}
/*
* List the folders the user currently has.
*/
folders()
{
char dirname[BUFSIZ], cmd[BUFSIZ];
int pid, s, e;
if (getfold(dirname) < 0) {
printf("No value set for \"folder\"\n");
return(-1);
}
switch ((pid = fork())) {
case 0:
sigchild();
execlp("ls", "ls", dirname, 0);
_exit(1);
case -1:
perror("fork");
return(-1);
default:
while ((e = wait(&s)) != -1 && e != pid)
;
}
return(0);
}