Allow all non-ephemeral buffers to be toggled writable or read-only

while mg is running: toggle-read-only-all

5 files changed, 39 insertions, 9 deletions

diff --git a/usr.bin/mg/buffer.c b/usr.bin/mg/buffer.c
index 3057882cc1f..e1e3da2b2cf 100644
--- a/usr.bin/mg/buffer.c
+++ b/usr.bin/mg/buffer.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: buffer.c,v 1.104 2017/08/06 04:39:45 bcallah Exp $	*/
+/*	$OpenBSD: buffer.c,v 1.105 2018/12/13 14:59:16 lum Exp $	*/
 
 /* This file is in the public domain. */
 
@@ -31,6 +31,28 @@ extern int globalwd;
 
 /* ARGSUSED */
 int
+togglereadonlyall(int f, int n)
+{
+	struct buffer *bp = NULL;
+	int len = 0;
+
+	allbro = !allbro;
+	for (bp = bheadp; bp != NULL; bp = bp->b_bufp) {
+		len = strlen(bp->b_bname);
+		if (bp->b_bname[0] != '*' && bp->b_bname[len - 1] != '*') {
+			if (allbro)
+				bp->b_flag |= BFREADONLY;
+			else
+				bp->b_flag &= ~BFREADONLY;
+		}
+	}
+	curwp->w_rflag |= WFMODE;
+
+	return (TRUE);
+}
+
+/* ARGSUSED */
+int
 togglereadonly(int f, int n)
 {
 	int s;
diff --git a/usr.bin/mg/def.h b/usr.bin/mg/def.h
index 86c606f7ff4..c7a134f8513 100644
--- a/usr.bin/mg/def.h
+++ b/usr.bin/mg/def.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: def.h,v 1.156 2018/08/29 07:50:16 reyk Exp $	*/
+/*	$OpenBSD: def.h,v 1.157 2018/12/13 14:59:16 lum Exp $	*/
 
 /* This file is in the public domain. */
 
@@ -417,6 +417,7 @@ int		 delwind(int, int);
 
 /* buffer.c */
 int		 togglereadonly(int, int);
+int		 togglereadonlyall(int, int);
 struct buffer   *bfind(const char *, int);
 int		 poptobuffer(int, int);
 int		 killbuffer(struct buffer *);
@@ -737,6 +738,7 @@ extern int		 defb_flag;
 extern int		 doaudiblebell;
 extern int		 dovisiblebell;
 extern int		 dblspace;
+extern int		 allbro;
 extern char	 	 cinfo[];
 extern char		*keystrings[];
 extern char		 pat[NPAT];
diff --git a/usr.bin/mg/funmap.c b/usr.bin/mg/funmap.c
index def40477262..a4c49858614 100644
--- a/usr.bin/mg/funmap.c
+++ b/usr.bin/mg/funmap.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: funmap.c,v 1.54 2018/08/29 07:50:16 reyk Exp $	*/
+/*	$OpenBSD: funmap.c,v 1.55 2018/12/13 14:59:16 lum Exp $	*/
 
 /* This file is in the public domain */
 
@@ -201,6 +201,7 @@ static struct funmap functnames[] = {
 	{usebuffer, "switch-to-buffer",},
 	{poptobuffer, "switch-to-buffer-other-window",},
 	{togglereadonly, "toggle-read-only" },
+	{togglereadonlyall, "toggle-read-only-all" },
 	{twiddle, "transpose-chars",},
 	{transposepara, "transpose-paragraphs",},
 	{transposeword, "transpose-words",},
diff --git a/usr.bin/mg/main.c b/usr.bin/mg/main.c
index f11d2658c5e..b4cf96d426b 100644
--- a/usr.bin/mg/main.c
+++ b/usr.bin/mg/main.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: main.c,v 1.84 2016/09/16 17:17:40 tedu Exp $	*/
+/*	$OpenBSD: main.c,v 1.85 2018/12/13 14:59:16 lum Exp $	*/
 
 /* This file is in the public domain. */
 
@@ -28,6 +28,7 @@ int		 startrow;			/* row to start		*/
 int		 doaudiblebell;			/* audible bell toggle	*/
 int		 dovisiblebell;			/* visible bell toggle	*/
 int		 dblspace;			/* sentence end #spaces	*/
+int		 allbro;			/* all buffs read-only	*/
 struct buffer	*curbp;				/* current buffer	*/
 struct buffer	*bheadp;			/* BUFFER list head	*/
 struct mgwin	*curwp;				/* current window	*/
@@ -54,7 +55,7 @@ main(int argc, char **argv)
 	char		*cp, *init_fcn_name = NULL;
 	PF		 init_fcn = NULL;
 	int	 	 o, i, nfiles;
-	int	  	 nobackups = 0, bro = 0;
+	int	  	 nobackups = 0;
 	struct buffer	*bp = NULL;
 
 	if (pledge("stdio rpath wpath cpath fattr chown getpw tty proc exec",
@@ -64,7 +65,7 @@ main(int argc, char **argv)
 	while ((o = getopt(argc, argv, "nRf:")) != -1)
 		switch (o) {
 		case 'R':
-			bro = 1;
+			allbro = 1;
 			break;
 		case 'n':
 			nobackups = 1;
@@ -174,7 +175,7 @@ notnum:
 						init_fcn(FFOTHARG, 1);
 					nfiles++;
 				}
-				if (bro)
+				if (allbro)
 					curbp->b_flag |= BFREADONLY;
 			}
 		}
diff --git a/usr.bin/mg/mg.1 b/usr.bin/mg/mg.1
index 2a4d962dfe4..6d4f22ff1f2 100644
--- a/usr.bin/mg/mg.1
+++ b/usr.bin/mg/mg.1
@@ -1,7 +1,7 @@
-.\"	$OpenBSD: mg.1,v 1.108 2018/11/18 07:57:28 lum Exp $
+.\"	$OpenBSD: mg.1,v 1.109 2018/12/13 14:59:16 lum Exp $
 .\" This file is in the public domain.
 .\"
-.Dd $Mdocdate: November 18 2018 $
+.Dd $Mdocdate: December 13 2018 $
 .Dt MG 1
 .Os
 .Sh NAME
@@ -884,6 +884,10 @@ Prompt and switch to a new buffer in the current window.
 Switch to buffer in another window.
 .It toggle-read-only
 Toggle the read-only flag on the current buffer.
+.It toggle-read-only-all
+Toggle the read-only flag on all non-ephemeral buffers.
+A simple toggle that switches a global read-only flag either on
+or off.
 .It transpose-chars
 Transpose the two characters in front of and under dot,
 then move forward one character.