From ab400c0be5577cab2a66d242183887ebbd61717f Mon Sep 17 00:00:00 2001
From: Nicholas <nbnoll@eml.cc>
Date: Wed, 17 Nov 2021 08:22:03 -0800
Subject: checkin

---
 src/cmd/rc/main.c | 42 ++++++++++++++++++++++++++++++++++--------
 1 file changed, 34 insertions(+), 8 deletions(-)

(limited to 'src/cmd/rc/main.c')

diff --git a/src/cmd/rc/main.c b/src/cmd/rc/main.c
index 81c7b8c..337470a 100644
--- a/src/cmd/rc/main.c
+++ b/src/cmd/rc/main.c
@@ -15,9 +15,9 @@ Shell shell    = { 0 };
 // functions
 
 void
-initshell(void)
+initshell(int *iflag)
 {
-    if((shell.interactive=0)){ //isatty(0))){
+    if((*iflag=isatty(0))){
         while(tcgetpgrp(0) != (shell.pid = getpgrp()))
             kill(-shell.pid, SIGTTIN);
 
@@ -27,8 +27,7 @@ initshell(void)
         signal(SIGTSTP, SIG_IGN);
         signal(SIGTTIN, SIG_IGN);
         signal(SIGTTOU, SIG_IGN);
-        /* 
-         * NOTE: if SIGCHLD is set to SIG_IGN then
+        /* NOTE: if SIGCHLD is set to SIG_IGN then
          *  1. children that terminate do not become zombies
          *  2. call a to wait() will block until all children have terminated
          *  3. the call to wait will fail with errno == ECHILD
@@ -49,20 +48,47 @@ initshell(void)
 // -----------------------------------------------------------------------
 // main point of entry
 
+static void
+usage(void)
+{
+    print(shell.err, "usage: %s [-cei] [file]", argv0);
+    exit(2);
+}
+
 int
 main(int argc, char *argv[])
 {
+    int flag;
+    char *exe, *cmd = nil;
     shell.err = openfd(2);
 
-    /* yydebug=1; */
-
     initenv();
     initpath();
     initkeywords();
-    initshell();
     inithistory();
+    initshell(&flag);
+
+    ARGBEGIN{
+    case 'e': shell.noerror = 1;     break;
+    case 'i': shell.interactive = 1; break;
+    case 'I': shell.interactive = 0; break;
+    case 'c':
+        cmd = EARGF(usage());
+        panicf("not implemented");
+        break;
+    default:
+        usage();
+    }ARGEND;
+
+    if(!argc){
+        shell.interactive |= flag;
+        exe = "/dev/stdin";
+    }else
+        exe = *argv++, argc--;
+
+    initlexer(shell.interactive);
 
     /* enablevi(); */
-    xboot(argc, argv);
+    xboot(exe, argc, argv);
     /* unreachable */
 }
-- 
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