save-buffer command, from Tiago Cunha.

CHANGES

@@ -1,3 +1,7 @@
+11 January 2009
+
+* save-buffer command, from Tiago Cunha.
+
 10 January 2009
 
 * New option, lock-after-time. If there is no activity in the period specified
@@ -855,7 +859,7 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.191 2009-01-11 01:01:05 nicm Exp $
+$Id: CHANGES,v 1.192 2009-01-11 23:14:57 nicm Exp $
 
  LocalWords:  showw utf UTF fulvio ciriaco joshe OSC APC gettime abc DEF OA clr
  LocalWords:  rivo nurges lscm Erdely eol smysession mysession ek dstname RB

GNUmakefile

@@ -1,4 +1,4 @@
-# $Id: GNUmakefile,v 1.49 2009-01-11 00:48:42 nicm Exp $
+# $Id: GNUmakefile,v 1.50 2009-01-11 23:14:57 nicm Exp $
 
 .PHONY: clean
 
@@ -33,6 +33,7 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
       cmd-list-commands.c cmd-move-window.c cmd-select-prompt.c \
       cmd-respawn-window.c cmd-source-file.c cmd-server-info.c \
       cmd-clock-mode.c cmd-lock-server.c cmd-set-password.c \
+      cmd-save-buffer.c \
       window-clock.c window-scroll.c window-more.c window-copy.c \
       options.c options-cmd.c paste.c colour.c utf8.c clock.c \
       tty.c tty-term.c tty-keys.c tty-write.c

Makefile

@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.86 2009-01-11 00:48:42 nicm Exp $
+# $Id: Makefile,v 1.87 2009-01-11 23:14:57 nicm Exp $
 
 .SUFFIXES: .c .o .y .h
 .PHONY: clean update-index.html upload-index.html
@@ -37,6 +37,7 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
       cmd-list-commands.c cmd-move-window.c cmd-select-prompt.c \
       cmd-respawn-window.c cmd-source-file.c cmd-server-info.c \
       cmd-clock-mode.c cmd-lock-server.c cmd-set-password.c \
+      cmd-save-buffer.c \
       window-clock.c window-scroll.c window-more.c window-copy.c \
       options.c options-cmd.c paste.c colour.c utf8.c clock.c \
       tty.c tty-term.c tty-keys.c tty-write.c

TODO

@@ -34,8 +34,7 @@
 - better terminal emulation (identify, insert mode, some other bits)
 - when resizing, use history
 - audit for leftover/unused code
-- commands:	save-buffer -b number filename
-		load-buffer -b number filename
+- commands:	load-buffer -b number filename
   	      	copy-buffer -s src-session -t dst-session
 			-a src-index -b dst-index
 		      	(copy from other session)

cmd-generic.c

@@ -1,4 +1,4 @@
-/* $Id: cmd-generic.c,v 1.18 2009-01-11 23:05:36 nicm Exp $ */
+/* $Id: cmd-generic.c,v 1.19 2009-01-11 23:14:57 nicm Exp $ */
 
 /*
  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -22,7 +22,7 @@
 
 #include "tmux.h"
 
-#define CMD_FLAGS "dgku"
+#define CMD_FLAGS "adgku"
 
 int	cmd_do_flags(int, int, int *);
 size_t	cmd_print_flags(char *, size_t, size_t, int);
@@ -32,6 +32,12 @@ int
 cmd_do_flags(int opt, int iflags, int *oflags)
 {
 	switch (opt) {
+	case 'a':
+		if (iflags & CMD_AFLAG) {
+			(*oflags) |= CMD_AFLAG;
+			return (0);
+		}
+		return (-1);
 	case 'd':
 		if (iflags & CMD_DFLAG) {
 			(*oflags) |= CMD_DFLAG;

cmd-save-buffer.c

@@ -0,0 +1,90 @@
+/* $Id: cmd-save-buffer.c,v 1.1 2009-01-11 23:14:57 nicm Exp $ */
+
+/*
+ * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <string.h>
+
+#include "tmux.h"
+
+/*
+ * Saves a session paste buffer to a file.
+ */
+
+void	cmd_save_buffer_exec(struct cmd *, struct cmd_ctx *);
+
+const struct cmd_entry cmd_save_buffer_entry = {
+	"save-buffer", "saveb",
+	"[-a] " CMD_BUFFER_SESSION_USAGE " path",
+	CMD_AFLAG|CMD_ONEARG,
+	cmd_buffer_init,
+	cmd_buffer_parse,
+	cmd_save_buffer_exec,
+	cmd_buffer_send,
+	cmd_buffer_recv,
+	cmd_buffer_free,
+	cmd_buffer_print
+};
+
+void
+cmd_save_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
+{
+	struct cmd_buffer_data	*data = self->data;
+	struct session		*s;
+	struct paste_buffer	*pb;
+	mode_t			mask;
+	FILE			*f;
+
+	if ((s = cmd_find_session(ctx, data->target)) == NULL)
+		return;
+
+	if (data->buffer == -1) {
+		if ((pb = paste_get_top(&s->buffers)) == NULL)
+			ctx->error(ctx, "no buffers");
+	} else {
+		if ((pb = paste_get_index(&s->buffers, data->buffer)) == NULL)
+			ctx->error(ctx, "no buffer %d", data->buffer);
+	}
+
+	if (pb == NULL)
+		return;
+
+	mask = umask(S_IRWXG | S_IRWXO);
+	if (data->flags & CMD_AFLAG)
+		f = fopen(data->arg, "a");
+	else
+		f = fopen(data->arg, "w");
+	if (f == NULL) {
+		ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
+		return;
+	}
+
+	if (fwrite(pb->data, 1, strlen(pb->data), f) != strlen(pb->data)) {
+	    	ctx->error(ctx, "%s: fwrite error", data->arg);
+	    	fclose(f);
+	    	return;
+	}
+
+	fclose(f);
+	umask(mask);
+
+	if (ctx->cmdclient != NULL)
+		server_write_client(ctx->cmdclient, MSG_EXIT, NULL, 0);
+}

cmd.c

@@ -1,4 +1,4 @@
-/* $Id: cmd.c,v 1.72 2009-01-11 00:48:42 nicm Exp $ */
+/* $Id: cmd.c,v 1.73 2009-01-11 23:14:57 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -56,6 +56,7 @@ const struct cmd_entry *cmd_table[] = {
 	&cmd_rename_session_entry,
 	&cmd_rename_window_entry,
 	&cmd_respawn_window_entry,
+	&cmd_save_buffer_entry,
 	&cmd_scroll_mode_entry,
 	&cmd_select_prompt_entry,
 	&cmd_select_window_entry,

tmux.1

@@ -1,4 +1,4 @@
-.\" $Id: tmux.1,v 1.56 2009-01-10 01:51:22 nicm Exp $
+.\" $Id: tmux.1,v 1.57 2009-01-11 23:14:57 nicm Exp $
 .\"
 .\" Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
 .\"
@@ -576,6 +576,18 @@ is not given, the command used when the window was created is executed.
 The window must be already inactive, unless
 .Fl k
 is given, in which case any existing command is killed.
+.It Xo Ic save-buffer
+.Op Fl a
+.Op Fl b Ar buffer-index
+.Op Fl t Ar target-session
+.Ar path
+.Xc
+.D1 (alias: Ic saveb )
+Save the contents of the specified paste buffer to
+.Ar path .
+The
+.Fl a
+option appends to rather than overwriting the file.
 .It Xo Ic scroll-mode
 .Op Fl t Ar target-window
 .Xc

tmux.h

@@ -1,4 +1,4 @@
-/* $Id: tmux.h,v 1.221 2009-01-11 00:48:42 nicm Exp $ */
+/* $Id: tmux.h,v 1.222 2009-01-11 23:14:57 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -807,6 +807,7 @@ struct cmd_entry {
 #define CMD_ZEROONEARG 0x20
 #define CMD_GFLAG 0x40
 #define CMD_UFLAG 0x80
+#define CMD_AFLAG 0x100
 	int		 flags;
 
 	void		 (*init)(struct cmd *, int);
@@ -1086,6 +1087,7 @@ extern const struct cmd_entry cmd_refresh_client_entry;
 extern const struct cmd_entry cmd_rename_session_entry;
 extern const struct cmd_entry cmd_rename_window_entry;
 extern const struct cmd_entry cmd_respawn_window_entry;
+extern const struct cmd_entry cmd_save_buffer_entry;
 extern const struct cmd_entry cmd_scroll_mode_entry;
 extern const struct cmd_entry cmd_select_prompt_entry;
 extern const struct cmd_entry cmd_select_window_entry;