V10/lbin/mailx/cmd1.c
#ident "@(#)cmd1.c 1.5 'attmail mail(1) command'"
#ident "@(#)mailx:cmd1.c 1.7.1.1"
/* Copyright (c) 1984 AT&T */
/* All Rights Reserved */
/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
/* The copyright notice above does not evidence any */
/* actual or intended publication of such source code. */
#ident "@(#)mailx:cmd1.c 1.7"
#include "rcv.h"
/*
* mailx -- a modified version of a University of California at Berkeley
* mail program
*
* User commands.
*/
static void brokpipe();
static char *dispname();
static void print();
static int screensize();
static int type1();
/*
* Print the current active headings.
* Don't change dot if invoker didn't give an argument.
*/
static int curscreen = 0, oldscreensize = 0;
headers(msgvec)
int *msgvec;
{
register int n, mesg, flag;
register struct message *mp;
int size;
size = screensize();
n = msgvec[0];
if (n != 0)
curscreen = (n-1)/size;
if (curscreen < 0)
curscreen = 0;
mp = &message[curscreen * 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;
if (Hflag)
mp = message;
for (; mp < &message[msgCount]; mp++) {
mesg++;
if (mp->m_flag & MDELETED)
continue;
if (flag++ >= size && !Hflag)
break;
printhead(mesg);
sreset();
}
if (flag == 0) {
printf("No more mail.\n");
return(1);
}
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 = curscreen;
switch (*arg) {
case 0:
case '+':
s++;
if (s * size > msgCount) {
printf("On last screenful of messages\n");
return(0);
}
curscreen = s;
break;
case '-':
if (--s < 0) {
printf("On first screenful of messages\n");
return(0);
}
curscreen = 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
* the variable 'baud' has screensize encoded into it
*/
static int
screensize()
{
register char *cp;
register int newscreensize, tmp;
cp = value("screen");
newscreensize = ((cp != NOSTR) && ((tmp = atoi(cp)) > 0)) ? tmp : baud;
/* renormalize the value of curscreen */
if (newscreensize != oldscreensize) {
curscreen = curscreen * oldscreensize / newscreensize;
oldscreensize = newscreensize;
}
return(newscreensize);
}
/*
* 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.
*/
void
printhead(mesg)
{
struct message *mp;
FILE *ibuf;
char headline[LINESIZE], *subjline, dispc, curind;
char *fromline;
char pbuf[LINESIZE];
char name[LINESIZE];
struct headline hl;
register char *cp;
int showto;
mp = &message[mesg-1];
ibuf = setinput(mp);
readline(ibuf, headline);
if ((subjline = hfield("subject", mp, addone)) == NOSTR
&& (subjline = hfield("subj", mp, addone)) == NOSTR
&& (subjline = hfield("message-status", mp, addone)) == NOSTR)
subjline = "";
curind = (!Hflag && dot == mp) ? '>' : ' ';
dispc = ' ';
showto = 0;
if ((mp->m_flag & (MREAD|MNEW)) == (MREAD|MNEW))
dispc = 'R';
if ((mp->m_flag & (MREAD|MNEW)) == MREAD)
dispc = 'O';
if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
dispc = 'N';
if ((mp->m_flag & (MREAD|MNEW)) == 0)
dispc = 'U';
if (mp->m_flag & MSAVED)
dispc = 'S';
if (mp->m_flag & MPRESERVE)
dispc = 'H';
if (mp->m_flag & MBOX)
dispc = 'M';
parse(headline, &hl, pbuf);
/*
* Netnews interface?
*/
if (newsflg) {
if ( (fromline=hfield("newsgroups",mp,addone)) == NOSTR /* A */
&& (fromline=hfield("article-id",mp,addone)) == NOSTR ) /* B */
fromline = "<>";
else
for(cp=fromline; *cp; cp++) { /* limit length */
if( any(*cp, " ,\n")){
*cp = '\0';
break;
}
}
/*
* else regular.
*/
} else {
fromline = nameof(mp);
if (value("showto") && samebody(myname, skin(fromline))
&& (cp = hfield("to", mp, addto))) {
showto = 1;
yankword(cp, fromline = name, docomma(cp));
}
fromline = dispname(fromline);
}
printf("%c%c%3d ", curind, dispc, mesg);
if (showto)
printf("To %-15.15s ", fromline);
else
printf("%-18.18s ", fromline);
if (mp->m_text) {
printf("%16.16s %4ld/%-5ld %-.25s\n",
hl.l_date, mp->m_lines, mp->m_size, subjline);
} else {
printf("%16.16s binary/%-5ld %-.25s\n", hl.l_date, mp->m_size, subjline);
}
}
/*
* Return the full name from an RFC-822 header line
* or the last two (or one) component of the address.
*/
static char *
dispname(hdr)
char *hdr;
{
char *cp, *cp2;
if (hdr == 0)
return 0;
if (cp = strchr(hdr, '<')) {
/* if name field is of the form
Any Name <addr-spec>
return Any Name. If it's
"Any Name" <addr-spec>
return Any Name (strip off quotes).
Otherwise, return addr-spec
*/
if (cp == hdr) { /* adb */
if (cp = strrchr(hdr, '>')) /* adb */
*cp = 0; /* adb */
} /* adb */
else if (*hdr == '"' && (cp = strrchr(++hdr, '"'))) { /* adb */
*cp = 0; /* adb */
} /* adb */
else *cp = 0; /* adb */
return hdr;
} else if (cp = strchr(hdr, '(')) {
hdr = ++cp;
if (cp = strchr(hdr, '+'))
*cp = 0;
if (cp = strrchr(hdr, ')'))
*cp = 0;
return hdr;
}
cp = skin(hdr);
if (cp2 = strrchr(cp, '!')) {
while (cp2 >= cp && *--cp2 != '!');
cp = ++cp2;
}
return cp;
}
/*
* 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;
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);
}
/*
* Type out messages, honor ignored fields.
*/
type(msgvec)
int *msgvec;
{
return(type1(msgvec, 1));
}
/*
* Type out messages, even printing ignored fields.
*/
Type(msgvec)
int *msgvec;
{
return(type1(msgvec, 0));
}
/*
* Type out the messages requested.
*/
static jmp_buf pipestop;
static int
type1(msgvec, doign)
int *msgvec;
{
register *ip;
register struct message *mp;
register int mesg;
register char *cp;
long nlines;
FILE *obuf;
void (*sigint)(), (*sigpipe)();
int setsigs = 0;
obuf = stdout;
if (setjmp(pipestop)) {
if (obuf != stdout) {
pipef = NULL;
npclose(obuf);
}
goto ret0;
}
if (intty && outtty && (cp = value("crt")) != NOSTR) {
for (ip = msgvec, nlines = 0; *ip && ip-msgvec < msgCount; ip++)
nlines += message[*ip - 1].m_lines;
if (nlines > atoi(cp)) {
char *pg = PG;
pg = (pg && *pg) ? pg : "cat";
if ((obuf = npopen(pg, "w")) == NULL) {
perror(pg);
obuf = stdout;
} else {
pipef = obuf;
sigint = sigset(SIGINT, SIG_IGN);
sigpipe = sigset(SIGPIPE, brokpipe);
setsigs++;
}
}
}
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;
npclose(obuf);
}
ret0:
if (setsigs) {
sigset(SIGPIPE, sigpipe);
sigset(SIGINT, sigint);
}
return(0);
}
/*
* Respond to a broken pipe signal --
* probably caused by user quitting pg.
*/
static void
brokpipe()
{
sigrelse(SIGPIPE);
longjmp(pipestop, 1);
}
/*
* Print the indicated message on standard output.
*/
static void
print(mp, obuf, doign)
register struct message *mp;
FILE *obuf;
{
if (!doign || !isign("message"))
fprintf(obuf, "Message %2d:\n", mp - &message[0] + 1);
touch(mp - &message[0] + 1);
/*
* in Area 10 world, no one has ordinary terminals. Everyone has terminal emulators.
* So don't worry about binary files. Print 'em anyway.
if (mp->m_text) {
send(mp, obuf, doign);
} else {
fprintf(obuf, "\n%s\n", binmsg);
}
*/
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 topl, lineb;
long c, lines;
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 %d:\n", mesg);
/*
* print even binary messages
*
if (mp->m_text) {
*/
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);
}
/*
} else {
printf("\n%s\n", binmsg);
}
*/
}
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];
if (getfold(dirname) < 0) {
printf("No value set for \"folder\"\n");
return(-1);
}
sprintf(cmd, "%s %s", LS, dirname);
return(system(cmd));
}