1 files changed, 121 insertions, 0 deletions
diff --git a/contrib/nvi/ex/ex_map.c b/contrib/nvi/ex/ex_map.c
new file mode 100644
index 000000000000..bc2cf0855919
--- /dev/null
+++ b/contrib/nvi/ex/ex_map.c
@@ -0,0 +1,121 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 1992, 1993, 1994, 1995, 1996
+ *	Keith Bostic.  All rights reserved.
+ *
+ * See the LICENSE file for redistribution information.
+ */
+
+#include "config.h"
+
+#ifndef lint
+static const char sccsid[] = "@(#)ex_map.c	10.9 (Berkeley) 3/6/96";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/queue.h>
+
+#include <bitstring.h>
+#include <ctype.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../common/common.h"
+
+/*
+ * ex_map -- :map[!] [input] [replacement]
+ *	Map a key/string or display mapped keys.
+ *
+ * Historical note:
+ *	Historic vi maps were fairly bizarre, and likely to differ in
+ *	very subtle and strange ways from this implementation.  Two
+ *	things worth noting are that vi would often hang or drop core
+ *	if the map was strange enough (ex: map X "xy$@x^V), or, simply
+ *	not work.  One trick worth remembering is that if you put a
+ *	mark at the start of the map, e.g. map X mx"xy ...), or if you
+ *	put the map in a .exrc file, things would often work much better.
+ *	No clue why.
+ *
+ * PUBLIC: int ex_map __P((SCR *, EXCMD *));
+ */
+int
+ex_map(sp, cmdp)
+	SCR *sp;
+	EXCMD *cmdp;
+{
+	seq_t stype;
+	CHAR_T *input, *p;
+
+	stype = FL_ISSET(cmdp->iflags, E_C_FORCE) ? SEQ_INPUT : SEQ_COMMAND;
+
+	switch (cmdp->argc) {
+	case 0:
+		if (seq_dump(sp, stype, 1) == 0)
+			msgq(sp, M_INFO, stype == SEQ_INPUT ?
+			    "132|No input map entries" :
+			    "133|No command map entries");
+		return (0);
+	case 2:
+		input = cmdp->argv[0]->bp;
+		break;
+	default:
+		abort();
+	}
+
+	/*
+	 * If the mapped string is #[0-9]* (and wasn't quoted) then store the
+	 * function key mapping.  If the screen specific routine has been set,
+	 * call it as well.  Note, the SEQ_FUNCMAP type is persistent across
+	 * screen types, maybe the next screen type will get it right.
+	 */
+	if (input[0] == '#' && isdigit(input[1])) {
+		for (p = input + 2; isdigit(*p); ++p);
+		if (p[0] != '\0')
+			goto nofunc;
+
+		if (seq_set(sp, NULL, 0, input, cmdp->argv[0]->len,
+		    cmdp->argv[1]->bp, cmdp->argv[1]->len, stype,
+		    SEQ_FUNCMAP | SEQ_USERDEF))
+			return (1);
+		return (sp->gp->scr_fmap == NULL ? 0 :
+		    sp->gp->scr_fmap(sp, stype, input, cmdp->argv[0]->len,
+		    cmdp->argv[1]->bp, cmdp->argv[1]->len));
+	}
+
+	/* Some single keys may not be remapped in command mode. */
+nofunc:	if (stype == SEQ_COMMAND && input[1] == '\0')
+		switch (KEY_VAL(sp, input[0])) {
+		case K_COLON:
+		case K_ESCAPE:
+		case K_NL:
+			msgq(sp, M_ERR,
+			    "134|The %s character may not be remapped",
+			    KEY_NAME(sp, input[0]));
+			return (1);
+		}
+	return (seq_set(sp, NULL, 0, input, cmdp->argv[0]->len,
+	    cmdp->argv[1]->bp, cmdp->argv[1]->len, stype, SEQ_USERDEF));
+}
+
+/*
+ * ex_unmap -- (:unmap[!] key)
+ *	Unmap a key.
+ *
+ * PUBLIC: int ex_unmap __P((SCR *, EXCMD *));
+ */
+int
+ex_unmap(sp, cmdp)
+	SCR *sp;
+	EXCMD *cmdp;
+{
+	if (seq_delete(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len,
+	    FL_ISSET(cmdp->iflags, E_C_FORCE) ? SEQ_INPUT : SEQ_COMMAND)) {
+		msgq_str(sp, M_INFO,
+		    cmdp->argv[0]->bp, "135|\"%s\" isn't currently mapped");
+		return (1);
+	}
+	return (0);
+}