-/* Copyright (c) 1980 Regents of the University of California */
-static char *sccsid = "@(#)ex.c 4.2 %G%";
+/* Copyright (c) 1981 Regents of the University of California */
+static char *sccsid = "@(#)ex.c 7.1 %G%";
#include "ex.h"
#include "ex_argv.h"
#include "ex_temp.h"
bool ivis;
bool itag = 0;
bool fast = 0;
+ extern int onemt();
#ifdef TRACE
register char *tracef;
#endif
normf = tty;
#endif
ppid = getpid();
-#ifdef HORSE
- horse(ac, av);
-#endif
/*
* Defend against d's, v's, w's, and a's in directories of
* path leading to our true name.
ruptible = signal(SIGINT, SIG_IGN) == SIG_DFL;
if (signal(SIGTERM, SIG_IGN) == SIG_DFL)
signal(SIGTERM, onhup);
-#ifdef TIOCLGET
- if (signal(SIGTSTP, SIG_IGN) == SIG_DFL)
- signal(SIGTSTP, onsusp), dosusp++;
-#endif
+ if (signal(SIGEMT, SIG_IGN) == SIG_DFL)
+ signal(SIGEMT, onemt);
/*
* Initialize end of core pointers.
tracef[9] = 0;
}
trace = fopen(tracef, "w");
+#define tracbuf NULL
if (trace == NULL)
printf("Trace create error\n");
- setbuf(trace, tracbuf);
+ else
+ setbuf(trace, tracbuf);
break;
#endif
defwind = 10*defwind + *cp - '0';
break;
+#ifdef CRYPT
case 'x':
/* -x: encrypted mode */
xflag = 1;
break;
+#endif
default:
smerror("Unknown option %s\n", av[0]);
}
ac--, av++;
}
+
+#ifdef SIGTSTP
+ if (!hush && signal(SIGTSTP, SIG_IGN) == SIG_DFL)
+ signal(SIGTSTP, onsusp), dosusp++;
+#endif
+
if (ac && av[0][0] == '+') {
firstpat = &av[0][1];
ac--, av++;
}
+#ifdef CRYPT
if(xflag){
key = getpass(KEYPROMPT);
kflag = crinit(key, perm);
}
+#endif
/*
* If we are doing a recover and no filename
* Initialize a temporary file (buffer) and
* set up terminal environment. Read user startup commands.
*/
- init();
if (setexit() == 0) {
setrupt();
intty = isatty(0);
setterm(cp);
}
}
- if (setexit() == 0 && !fast && intty)
+ if (setexit() == 0 && !fast && intty) {
if ((globp = getenv("EXINIT")) && *globp)
commands(1,1);
else {
if ((cp = getenv("HOME")) != 0 && *cp)
source(strcat(strcpy(genbuf, cp), "/.exrc"), 1);
}
+ /*
+ * Allow local .exrc too. This loses if . is $HOME,
+ * but nobody should notice unless they do stupid things
+ * like putting a version command in .exrc. Besides,
+ * they should be using EXINIT, not .exrc, right?
+ */
+ source(".exrc", 1);
+ }
+ init(); /* moved after prev 2 chunks to fix directory option */
/*
* Initial processing. Handle tag, recover, and file argument
* If you quit out of a 'vi' command by doing Q or ^\,
* you also fall through to here.
*/
+ seenprompt = 1;
ungetchar(0);
globp = 0;
initev = 0;
undkind = UNDNONE;
chng = 0;
edited = 0;
-#ifdef USG
- signal (SIGHUP, SIG_IGN);
-#endif
-#ifdef USG3TTY
-#ifndef USG
- signal (SIGHUP, SIG_IGN);
-#endif
-#endif
for (i = 0; i <= 'z'-'a'+1; i++)
names[i] = 1;
anymarks = 0;
+#ifdef CRYPT
if(xflag) {
xtflag = 1;
makekey(key, tperm);
}
-}
-
-/*
- * When a hangup occurs our actions are similar to a preserve
- * command. If the buffer has not been [Modified], then we do
- * nothing but remove the temporary files and exit.
- * Otherwise, we sync the temp file and then attempt a preserve.
- * If the preserve succeeds, we unlink our temp files.
- * If the preserve fails, we leave the temp files as they are
- * as they are a backup even without preservation if they
- * are not removed.
- */
-onhup()
-{
-
- /*
- * USG tty driver can send multiple HUP's!!
- */
- signal(SIGINT, SIG_IGN);
- signal(SIGHUP, SIG_IGN);
- if (chng == 0) {
- cleanup(1);
- exit(0);
- }
- if (setexit() == 0) {
- if (preserve()) {
- cleanup(1);
- exit(0);
- }
- }
- exit(1);
-}
-
-/*
- * An interrupt occurred. Drain any output which
- * is still in the output buffering pipeline.
- * Catch interrupts again. Unless we are in visual
- * reset the output state (out of -nl mode, e.g).
- * Then like a normal error (with the \n before Interrupt
- * suppressed in visual mode).
- */
-onintr()
-{
-
-#ifndef CBREAK
- signal(SIGINT, onintr);
-#else
- signal(SIGINT, inopen ? vintr : onintr);
-#endif
- draino();
- if (!inopen) {
- pstop();
- setlastchar('\n');
-#ifdef CBREAK
- }
-#else
- } else
- vraw();
#endif
- error("\nInterrupt" + inopen);
}
-/*
- * If we are interruptible, enable interrupts again.
- * In some critical sections we turn interrupts off,
- * but not very often.
- */
-setrupt()
-{
-
- if (ruptible) {
-#ifndef CBREAK
- signal(SIGINT, onintr);
-#else
- signal(SIGINT, inopen ? vintr : onintr);
-#endif
-#ifdef TIOCLGET
- if (dosusp)
- signal(SIGTSTP, onsusp);
-#endif
- }
-}
-
-preserve()
-{
-
-#ifdef VMUNIX
- tflush();
-#endif
- synctmp();
- pid = fork();
- if (pid < 0)
- return (0);
- if (pid == 0) {
- close(0);
- dup(tfile);
- execl(EXPRESERVE, "expreserve", (char *) 0);
- exit(1);
- }
- waitfor();
- if (rpid == pid && status == 0)
- return (1);
- return (0);
-}
-
-#ifndef V6
-exit(i)
- int i;
-{
-
-# ifdef TRACE
- if (trace)
- fclose(trace);
-# endif
- _exit(i);
-}
-#endif
-
/*
* Return last component of unix path name p.
*/