release 3.4, June 24, 1980

[unix-history] / usr / src / usr.bin / ex / ex.c

diff --git a/usr/src/usr.bin/ex/ex.c b/usr/src/usr.bin/ex/ex.c
index 72fa653..b10ceb8 100644 (file)
--- a/usr/src/usr.bin/ex/ex.c
+++ b/usr/src/usr.bin/ex/ex.c
@@ -52,6 +52,8 @@ char  tttrace[]       = { '/','d','e','v','/','t','t','y','x','x',0 };
  *                     data base, grabbing of tty modes (at beginning
  *                     and after escapes).
  *
  *                     data base, grabbing of tty modes (at beginning
  *                     and after escapes).
  *

+ * ex_unix.c           Routines for the ! command and its variations.
+ *

  * ex_v*.c             Visual/open mode routines... see ex_v.c for a
  *                     guide to the overall organization.
  */
  * ex_v*.c             Visual/open mode routines... see ex_v.c for a
  *                     guide to the overall organization.
  */


@@ -59,18 +61,19 @@ char        tttrace[]       = { '/','d','e','v','/','t','t','y','x','x',0 };
 /*
  * Main procedure.  Process arguments and then
  * transfer control to the main command processing loop
 /*
  * Main procedure.  Process arguments and then
  * transfer control to the main command processing loop

- * in the routine commands.  We are entered as either "ex", "edit" or "vi"
- * and the distinction is made here.  Actually, we are "vi" if
- * there is a 'v' in our name, and "edit" if there is a 'd' in our
- * name.  For edit we just diddle options; for vi we actually
- * force an early visual command, setting the external initev so
- * the q command in visual doesn't give command mode.
+ * in the routine commands.  We are entered as either "ex", "edit", "vi"
+ * or "view" and the distinction is made here.  Actually, we are "vi" if
+ * there is a 'v' in our name, "view" is there is a 'w', and "edit" if
+ * there is a 'd' in our name.  For edit we just diddle options;
+ * for vi we actually force an early visual command.

  */
 main(ac, av)
        register int ac;
        register char *av[];
 {
  */
 main(ac, av)
        register int ac;
        register char *av[];
 {

+#ifndef VMUNIX

        char *erpath = EXSTRINGS;
        char *erpath = EXSTRINGS;

+#endif

        register char *cp;
        register int c;
        bool recov = 0;
        register char *cp;
        register int c;
        bool recov = 0;


@@ -86,39 +89,47 @@ main(ac, av)
         * get messed up if an interrupt comes in quickly.
         */
        gTTY(1);
         * get messed up if an interrupt comes in quickly.
         */
        gTTY(1);

+#ifndef USG3TTY

        normf = tty.sg_flags;
        normf = tty.sg_flags;

+#else
+       normf = tty;
+#endif

        ppid = getpid();
        /*
        ppid = getpid();
        /*

-        * Defend against d's, v's, and a's in directories of
+        * Defend against d's, v's, w's, and a's in directories of

         * path leading to our true name.
         */
        av[0] = tailpath(av[0]);
         * path leading to our true name.
         */
        av[0] = tailpath(av[0]);

-       ivis = any('v', av[0]);

 
        /*
 
        /*

-        * For debugging take files out of . if name is a.out.
-        * If a 'd' in our name, then set options for edit.
+        * Figure out how we were invoked: ex, edit, vi, view.

         */
         */

-       if (av[0][0] == 'a')
-               erpath = tailpath(erpath);
-       if (ivis) {
-#ifdef notdef
-               options[BEAUTIFY].odefault = value(BEAUTIFY) = 1;
-#endif
-       } else if (any('d', av[0])) {
+       ivis = any('v', av[0]); /* "vi" */
+       if (any('w', av[0]))    /* "view" */
+               value(READONLY) = 1;
+       if (any('d', av[0])) {  /* "edit" */

                value(OPEN) = 0;
                value(REPORT) = 1;
                value(MAGIC) = 0;
        }
 
                value(OPEN) = 0;
                value(REPORT) = 1;
                value(MAGIC) = 0;
        }
 

+#ifndef VMUNIX
+       /*
+        * For debugging take files out of . if name is a.out.
+        */
+       if (av[0][0] == 'a')
+               erpath = tailpath(erpath);
+#endif

        /*
         * Open the error message file.
         */
        draino();
        /*
         * Open the error message file.
         */
        draino();

+#ifndef VMUNIX

        erfile = open(erpath+4, 0);
        if (erfile < 0) {
                erfile = open(erpath, 0);
        }
        erfile = open(erpath+4, 0);
        if (erfile < 0) {
                erfile = open(erpath, 0);
        }

+#endif

        pstop();
 
        /*
        pstop();
 
        /*


@@ -131,6 +142,10 @@ main(ac, av)
        ruptible = signal(SIGINT, SIG_IGN) == SIG_DFL;
        if (signal(SIGTERM, SIG_IGN) == SIG_DFL)
                signal(SIGTERM, onhup);
        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

 
        /*
         * Initialize end of core pointers.
 
        /*
         * Initialize end of core pointers.


@@ -155,6 +170,10 @@ main(ac, av)
                        fast++;
                } else switch (c) {
 
                        fast++;
                } else switch (c) {
 

+               case 'R':
+                       value(READONLY) = 1;
+                       break;
+

 #ifdef TRACE
                case 'T':
                        if (av[0][2] == 0)
 #ifdef TRACE
                case 'T':
                        if (av[0][2] == 0)


@@ -206,6 +225,11 @@ main(ac, av)
                                defwind = 10*defwind + *cp - '0';
                        break;
 
                                defwind = 10*defwind + *cp - '0';
                        break;
 

+               case 'x':
+                       /* -x: encrypted mode */
+                       xflag = 1;
+                       break;
+

                default:
                        smerror("Unknown option %s\n", av[0]);
                        break;
                default:
                        smerror("Unknown option %s\n", av[0]);
                        break;


@@ -217,6 +241,11 @@ main(ac, av)
                ac--, av++;
        }
 
                ac--, av++;
        }
 

+       if(xflag){
+               key = getpass(KEYPROMPT);
+               kflag = crinit(key, perm);
+       }
+

        /*
         * If we are doing a recover and no filename
         * was given, then execute an exrecover command with
        /*
         * If we are doing a recover and no filename
         * was given, then execute an exrecover command with


@@ -252,19 +281,24 @@ main(ac, av)
                setrupt();
                intty = isatty(0);
                value(PROMPT) = intty;
                setrupt();
                intty = isatty(0);
                value(PROMPT) = intty;

+               if (cp = getenv("SHELL"))
+                       CP(shell, cp);

                if (fast || !intty)
                        setterm("dumb");
                else {
                        gettmode();
                if (fast || !intty)
                        setterm("dumb");
                else {
                        gettmode();

-                       if ((cp = getenv("TERM")) != 0)
+                       if ((cp = getenv("TERM")) != 0 && *cp)

                                setterm(cp);
                }
        }
        if (setexit() == 0 && !fast && intty)
                                setterm(cp);
                }
        }
        if (setexit() == 0 && !fast && intty)

-               if (globp = getenv("EXINIT"))
+               if ((globp = getenv("EXINIT")) && *globp)

                        commands(1,1);
                        commands(1,1);

-               else if ((cp = getenv("HOME")) != 0)
-                       source(strcat(strcpy(genbuf, cp), "/.exrc"), 1);
+               else {
+                       globp = 0;
+                       if ((cp = getenv("HOME")) != 0 && *cp)
+                               source(strcat(strcpy(genbuf, cp), "/.exrc"), 1);
+               }

 
        /*
         * Initial processing.  Handle tag, recover, and file argument
 
        /*
         * Initial processing.  Handle tag, recover, and file argument


@@ -336,9 +370,21 @@ init()
        undkind = UNDNONE;
        chng = 0;
        edited = 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;
        for (i = 0; i <= 'z'-'a'+1; i++)
                names[i] = 1;
        anymarks = 0;

+        if(xflag) {
+                xtflag = 1;
+                makekey(key, tperm);
+        }

 }
 
 /*
 }
 
 /*


@@ -354,6 +400,11 @@ init()
 onhup()
 {
 
 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 (chng == 0) {
                cleanup(1);
                exit(0);


@@ -404,12 +455,17 @@ onintr()
 setrupt()
 {
 
 setrupt()
 {
 

-       if (ruptible)
+       if (ruptible) {

 #ifndef CBREAK
                signal(SIGINT, onintr);
 #else
                signal(SIGINT, inopen ? vintr : onintr);
 #endif
 #ifndef CBREAK
                signal(SIGINT, onintr);
 #else
                signal(SIGINT, inopen ? vintr : onintr);
 #endif

+#ifdef TIOCLGET
+               if (dosusp)
+                       signal(SIGTSTP, onsusp);
+#endif
+       }

 }
 
 preserve()
 }
 
 preserve()


@@ -436,6 +492,10 @@ exit(i)
        int i;
 {
 
        int i;
 {
 

+# ifdef TRACE
+       if (trace)
+               fclose(trace);
+# endif

        _exit(i);
 }
 #endif
        _exit(i);
 }
 #endif