Add initial framework for more powerful formatting of command output and

use it for list-{panes,windows,sessions}. This allows more descriptive
replacements (such as #{session_name}) and conditionals.

Later this will be used for status_replace and list-keys and other
places.

1 files changed, 26 insertions, 21 deletions

diff --git a/cmd-list-sessions.c b/cmd-list-sessions.c
index 6c0f2dae..10e6b16d 100644
--- a/cmd-list-sessions.c
+++ b/cmd-list-sessions.c
@@ -31,40 +31,45 @@ int	cmd_list_sessions_exec(struct cmd *, struct cmd_ctx *);
 
 const struct cmd_entry cmd_list_sessions_entry = {
 	"list-sessions", "ls",
-	"", 0, 0,
-	"",
+	"F:", 0, 0,
+	"[-F format]",
 	0,
 	NULL,
 	NULL,
 	cmd_list_sessions_exec
 };
 
-/* ARGSUSED */
 int
-cmd_list_sessions_exec(unused struct cmd *self, struct cmd_ctx *ctx)
+cmd_list_sessions_exec(struct cmd *self, struct cmd_ctx *ctx)
 {
+	struct args		*args = self->args;
 	struct session		*s;
-	struct session_group	*sg;
-	char			*tim, tmp[64];
-	u_int			 idx;
-	time_t			 t;
+	u_int		 	 n;
+	struct format_tree	*ft;
+	const char		*template;
+	char			*line;
 
+	template = args_get(args, 'F');
+	if (template == NULL) {
+		template = "#{session_name}: #{session_windows} windows "
+		    "(created #{session_created_string}) [#{session_width}x"
+		    "#{session_height}]#{?session_grouped, (group ,}"
+		    "#{session_group}#{?session_grouped,),}"
+		    "#{?session_attached, (attached),}";
+	}
+
+	n = 0;
 	RB_FOREACH(s, sessions, &sessions) {
-		sg = session_group_find(s);
-		if (sg == NULL)
-			*tmp = '\0';
-		else {
-			idx = session_group_index(sg);
-			xsnprintf(tmp, sizeof tmp, " (group %u)", idx);
-		}
+		ft = format_create();
+		format_add(ft, "line", "%u", n);
+		format_session(ft, s);
 
-		t = s->creation_time.tv_sec;
-		tim = ctime(&t);
-		*strchr(tim, '\n') = '\0';
+		line = format_expand(ft, template);
+		ctx->print(ctx, "%s", line);
+		xfree(line);
 
-		ctx->print(ctx, "%s: %u windows (created %s) [%ux%u]%s%s",
-		    s->name, winlink_count(&s->windows), tim, s->sx, s->sy,
-		    tmp, s->flags & SESSION_UNATTACHED ? "" : " (attached)");
+		format_free(ft);
+		n++;
 	}
 
 	return (0);