-#
+/*
+ * Copyright (c) 1980 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of California at Berkeley. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ */
+
+#ifdef notdef
+static char sccsid[] = "@(#)lex.c 5.13 (Berkeley) %G%";
+#endif /* notdef */
#include "rcv.h"
+#include <sys/stat.h>
+#include <errno.h>
/*
* Mail -- a mail program
* Lexical processing of commands.
*/
-static char *SccsId = "@(#)lex.c 1.13 %G%";
+char *prompt = "& ";
/*
* Set up editing on the given file name.
{
FILE *ibuf;
int i;
+ struct stat stb;
static int shudclob;
- static char efile[128];
extern char tempMesg[];
- int (*sigs[2])();
+ extern int errno;
- if ((ibuf = fopen(name, "r")) == NULL) {
- if (isedit)
- perror(name);
- else
- printf("No mail for %s\n", myname);
+ if ((ibuf = fopen(name, "r")) == NULL)
+ return(-1);
+
+ if (fstat(fileno(ibuf), &stb) < 0) {
+ fclose(ibuf);
+ return (-1);
+ }
+
+ switch (stb.st_mode & S_IFMT) {
+ case S_IFDIR:
+ fclose(ibuf);
+ errno = EISDIR;
+ return (-1);
+
+ case S_IFREG:
+ break;
+
+ default:
+ fclose(ibuf);
+ errno = EINVAL;
+ return (-1);
+ }
+
+ if (!edit && stb.st_size == 0) {
+ fclose(ibuf);
return(-1);
}
/*
* Looks like all will be well. We must now relinquish our
- * hold on the current set of stuff. Must ignore signals
+ * hold on the current set of stuff. Must hold signals
* while we are reading the new file, else we will ruin
* the message[] data structure.
*/
- for (i = SIGINT; i <= SIGQUIT; i++)
- sigs[i - SIGINT] = signal(i, SIG_IGN);
+ holdsigs();
if (shudclob) {
if (edit)
edstop();
}
shudclob = 1;
edit = isedit;
- strncpy(efile, name, 128);
- editfile = efile;
if (name != mailname)
strcpy(mailname, name);
mailsize = fsize(ibuf);
setptr(ibuf);
setmsize(msgCount);
fclose(ibuf);
- for (i = SIGINT; i <= SIGQUIT; i++)
- signal(i, sigs[i - SIGINT]);
- shudann = 1;
+ relsesigs();
sawcom = 0;
return(0);
}
*/
int *msgvec;
+jmp_buf commjmp;
commands()
{
- int prompt, firstsw, stop();
+ int eofloop, stop();
register int n;
char linebuf[LINESIZE];
+ int hangup(), contin();
- if (rcvmode)
- if (signal(SIGINT, SIG_IGN) == SIG_DFL)
+ signal(SIGCONT, SIG_DFL);
+ if (rcvmode && !sourcing) {
+ if (signal(SIGINT, SIG_IGN) != SIG_IGN)
signal(SIGINT, stop);
- input = stdin;
- prompt = 1;
- if (!intty)
- prompt = 0;
- firstsw = 1;
+ if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
+ signal(SIGHUP, hangup);
+ }
for (;;) {
setexit();
- if (firstsw > 0) {
- firstsw = 0;
- source1(mailrc);
- if (!nosrc)
- source1(MASTER);
- }
-
- /*
- * How's this for obscure: after we
- * finish sourcing for the first time,
- * go off and print the headers!
- */
-
- if (shudann && !sourcing) {
- shudann = 0;
- if (rcvmode)
- announce(edit);
- }
/*
* Print the prompt, if needed. Clear out
if (!rcvmode && !sourcing)
return;
+ eofloop = 0;
top:
- if (prompt && !sourcing)
- printf("_\r");
- flush();
- sreset();
+ if (!sourcing && value("interactive") != NOSTR) {
+ setjmp(commjmp);
+ signal(SIGCONT, contin);
+ printf(prompt);
+ }
+ fflush(stdout);
+ if (!sourcing)
+ sreset();
/*
* Read a line of commands from the current input
n = 0;
for (;;) {
- if (readline(input, &linebuf[n]) <= 0) {
+ if (readline(input, &linebuf[n]) < 0) {
if (n != 0)
break;
+ if (loading)
+ return;
if (sourcing) {
unstack();
goto more;
}
- if (value("ignoreeof") != NOSTR && prompt) {
- printf("Use \"quit\" to quit.\n");
- goto top;
+ if (value("interactive") != NOSTR &&
+ value("ignoreeof") != NOSTR) {
+ if (++eofloop < 25) {
+ printf("Use \"quit\" to quit.\n");
+ goto top;
+ }
}
- if (!edit) {
- signal(SIGINT, SIG_IGN);
- return;
- }
- edstop();
+ if (edit)
+ edstop();
return;
}
if ((n = strlen(linebuf)) == 0)
break;
linebuf[n++] = ' ';
}
+ signal(SIGCONT, SIG_DFL);
if (execute(linebuf, 0))
return;
more: ;
* lexical conventions.
*/
- cp = linebuf;
- while (any(*cp, " \t"))
- cp++;
+ for (cp = linebuf; isspace(*cp); cp++)
+ ;
if (*cp == '!') {
if (sourcing) {
printf("Can't \"!\" while sourcing\n");
* confusion.
*/
- if (sourcing && equal(word, ""))
+ if (sourcing && *word == '\0')
return(0);
com = lex(word);
if (com == NONE) {
- printf("What?\n");
+ printf("Unknown command: \"%s\"\n", word);
+ if (loading)
+ return(1);
if (sourcing)
unstack();
return(0);
*/
if (com->c_func == edstop && sourcing) {
+ if (loading)
+ return(1);
unstack();
return(0);
}
if (!rcvmode && (com->c_argtype & M) == 0) {
printf("May not execute \"%s\" while sending\n",
com->c_name);
+ if (loading)
+ return(1);
if (sourcing)
unstack();
return(0);
if (sourcing && com->c_argtype & I) {
printf("May not execute \"%s\" while sourcing\n",
com->c_name);
+ if (loading)
+ return(1);
unstack();
return(0);
}
if (readonly && com->c_argtype & W) {
printf("May not execute \"%s\" -- message file is read only\n",
com->c_name);
+ if (loading)
+ return(1);
if (sourcing)
unstack();
return(0);
* A message list defaulting to nearest forward
* legal message.
*/
+ if (msgvec == 0) {
+ printf("Illegal use of \"message list\"\n");
+ return(-1);
+ }
if ((c = getmsglist(cp, msgvec, com->c_msgflag)) < 0)
break;
if (c == 0) {
* A message list with no defaults, but no error
* if none exist.
*/
+ if (msgvec == 0) {
+ printf("Illegal use of \"message list\"\n");
+ return(-1);
+ }
if (getmsglist(cp, msgvec, com->c_msgflag) < 0)
break;
e = (*com->c_func)(msgvec);
* Just the straight string, with
* leading blanks removed.
*/
- while (any(*cp, " \t"))
+ while (isspace(*cp))
cp++;
e = (*com->c_func)(cp);
break;
/*
* A vector of strings, in shell style.
*/
- if ((c = getrawlist(cp, arglist)) < 0)
+ if ((c = getrawlist(cp, arglist,
+ sizeof arglist / sizeof *arglist)) < 0)
break;
if (c < com->c_minargs) {
printf("%s requires at least %d arg(s)\n",
* error.
*/
+ if (e && loading)
+ return(1);
if (e && sourcing)
unstack();
if (com->c_func == edstop)
return(0);
}
+/*
+ * When we wake up after ^Z, reprint the prompt.
+ */
+/*ARGSUSED*/
+contin(s)
+{
+
+ longjmp(commjmp, 1);
+}
+
+/*
+ * Branch here on hangup signal and simulate "exit".
+ */
+/*ARGSUSED*/
+hangup(s)
+{
+
+ /* nothing to do? */
+ exit(0);
+}
+
/*
* Set the size of the message vector used to construct argument
* lists to message list functions.
setmsize(sz)
{
- if (msgvec != (int *) 0)
- cfree(msgvec);
+ if (msgvec != 0)
+ cfree((char *) msgvec);
msgvec = (int *) calloc((unsigned) (sz + 1), sizeof *msgvec);
}
}
/*
- * The following gets called on receipt of a rubout. This is
+ * The following gets called on receipt of an interrupt. This is
* to abort printout of a command, mainly.
* Dispatching here when command() is inactive crashes rcv.
* Close all open files except 0, 1, 2, and the temporary.
- * The special call to getuserid() is needed so it won't get
- * annoyed about losing its open file.
* Also, unstack all source files.
*/
-stop()
+int inithdr; /* am printing startup headers */
+
+#ifdef _NFILE
+static
+_fwalk(function)
+ register int (*function)();
+{
+ register FILE *iop;
+
+ for (iop = _iob; iop < _iob + _NFILE; iop++)
+ (*function)(iop);
+}
+#endif
+
+static
+xclose(iop)
+ register FILE *iop;
+{
+ if (iop == stdin || iop == stdout ||
+ iop == stderr || iop == itf || iop == otf)
+ return;
+
+ if (iop != pipef)
+ fclose(iop);
+ else {
+ pclose(pipef);
+ pipef = NULL;
+ }
+}
+
+/*ARGSUSED*/
+stop(s)
{
- register FILE *fp;
noreset = 0;
- signal(SIGINT, SIG_IGN);
- sawcom++;
+ if (!inithdr)
+ sawcom++;
+ inithdr = 0;
while (sourcing)
unstack();
- getuserid((char *) -1);
- for (fp = &_iob[0]; fp < &_iob[_NFILE]; fp++) {
- if (fp == stdin || fp == stdout)
- continue;
- if (fp == itf || fp == otf)
- continue;
- if (fp == stderr)
- continue;
- if (fp == pipef) {
- pclose(pipef);
- pipef = NULL;
- continue;
- }
- fclose(fp);
- }
+
+ /*
+ * Walk through all the open FILEs, applying xclose() to them
+ */
+ _fwalk(xclose);
+
if (image >= 0) {
close(image);
image = -1;
}
- clrbuf(stdout);
- printf("Interrupt\n");
- signal(SIGINT, stop);
+ fprintf(stderr, "Interrupt\n");
reset(0);
}
* give the message count, and print a header listing.
*/
-char *greeting = "Mail version 2.0 %s. Type ? for help.\n";
-
-announce(pr)
+announce()
{
int vec[2], mdot;
- extern char *version;
mdot = newfileinfo();
vec[0] = mdot;
vec[1] = 0;
- if (pr && value("quiet") == NOSTR)
- printf(greeting, version);
dot = &message[mdot - 1];
- if (msgCount > 0)
+ if (msgCount > 0 && value("noheader") == NOSTR) {
+ inithdr++;
headers(vec);
+ inithdr = 0;
+ }
}
/*
* Announce information about the file we are editing.
* Return a likely place to set dot.
*/
-
newfileinfo()
{
register struct message *mp;
- register int u, n, mdot;
+ register int u, n, mdot, d, s;
+ char fname[BUFSIZ], zname[BUFSIZ], *ename;
for (mp = &message[0]; mp < &message[msgCount]; mp++)
if (mp->m_flag & MNEW)
mdot = mp - &message[0] + 1;
else
mdot = 1;
+ s = d = 0;
for (mp = &message[0], n = 0, u = 0; mp < &message[msgCount]; mp++) {
if (mp->m_flag & MNEW)
n++;
if ((mp->m_flag & MREAD) == 0)
u++;
+ if (mp->m_flag & MDELETED)
+ d++;
+ if (mp->m_flag & MSAVED)
+ s++;
+ }
+ ename = mailname;
+ if (getfold(fname) >= 0) {
+ strcat(fname, "/");
+ if (strncmp(fname, mailname, strlen(fname)) == 0) {
+ sprintf(zname, "+%s", mailname + strlen(fname));
+ ename = zname;
+ }
}
- printf("\"%s\": ", mailname);
+ printf("\"%s\": ", ename);
if (msgCount == 1)
printf("1 message");
else
printf(" %d new", n);
if (u-n > 0)
printf(" %d unread", u);
+ if (d > 0)
+ printf(" %d deleted", d);
+ if (s > 0)
+ printf(" %d saved", s);
if (readonly)
printf(" [Read only]");
printf("\n");
return(mdot);
}
-strace() {}
-
/*
* Print the current version number.
*/
+/*ARGSUSED*/
pversion(e)
{
- printf(greeting, version);
+ extern char *version;
+
+ printf("Version %s\n", version);
return(0);
}
+
+/*
+ * Load a file of user definitions.
+ */
+load(name)
+ char *name;
+{
+ register FILE *in, *oldin;
+
+ if ((in = fopen(name, "r")) == NULL)
+ return;
+ oldin = input;
+ input = in;
+ loading = 1;
+ sourcing = 1;
+ commands();
+ loading = 0;
+ sourcing = 0;
+ input = oldin;
+ fclose(in);
+}