Import tmux, a terminal multiplexor allowing (among other things) a single

terminal to be switched between several different windows and programs
displayed on one terminal be detached from one terminal and moved to another.

ok deraadt pirofti

1 files changed, 194 insertions, 0 deletions

diff --git a/usr.bin/tmux/arg.c b/usr.bin/tmux/arg.c
new file mode 100644
index 00000000000..47603b3a405
--- /dev/null
+++ b/usr.bin/tmux/arg.c
@@ -0,0 +1,194 @@
+/* $OpenBSD: arg.c,v 1.1 2009/06/01 22:58:49 nicm Exp $ */
+
+/*
+ * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
+ *
+ * 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 <fnmatch.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tmux.h"
+
+struct client	*arg_lookup_client(const char *);
+struct session	*arg_lookup_session(const char *);
+
+struct client *
+arg_lookup_client(const char *name)
+{
+	struct client	*c;
+	u_int		 i;
+
+	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
+		c = ARRAY_ITEM(&clients, i);
+		if (c != NULL && strcmp(name, c->tty.path) == 0)
+			return (c);
+	}
+
+	return (NULL);
+}
+
+struct session *
+arg_lookup_session(const char *name)
+{
+	struct session	*s, *newest = NULL;
+	struct timeval	*tv;
+	u_int		 i;
+
+	tv = NULL;
+	for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
+		s = ARRAY_ITEM(&sessions, i);
+		if (s == NULL || fnmatch(name, s->name, 0) != 0)
+			continue;
+
+		if (tv == NULL || timercmp(&s->tv, tv, >)) {
+			newest = s;
+			tv = &s->tv;
+		}
+	}
+
+	return (newest);
+}
+
+struct client *
+arg_parse_client(const char *arg)
+{
+	struct client	*c;
+	char		*arg2;
+	size_t		 n;
+
+	if (arg != NULL && (arg[0] != ':' || arg[1] != '\0')) {
+		arg2 = xstrdup(arg);
+
+		/* Trim a trailing : if any from the argument. */
+		n = strlen(arg2);
+		if (arg2[n - 1] == ':')
+			arg2[n - 1] = '\0';
+
+		/* Try and look up the client name. */
+		c = arg_lookup_client(arg2);
+		xfree(arg2);
+		return (c);
+	}
+
+	return (NULL);
+}
+
+struct session *
+arg_parse_session(const char *arg)
+{
+	struct session	*s;
+	struct client	*c;
+	char		*arg2;
+	size_t		 n;
+
+	if (arg != NULL && (arg[0] != ':' || arg[1] != '\0')) {
+		arg2 = xstrdup(arg);
+
+		/* Trim a trailing : if any from the argument. */
+		n = strlen(arg2);
+		if (arg2[n - 1] == ':')
+			arg2[n - 1] = '\0';
+
+		/* See if the argument matches a session. */
+		if ((s = arg_lookup_session(arg2)) != NULL) {
+			xfree(arg2);
+			return (s);
+		}
+
+		/* If not try a client. */
+		if ((c = arg_lookup_client(arg2)) != NULL) {
+			xfree(arg2);
+			return (c->session);
+		}
+
+		xfree(arg2);
+	}
+
+	return (NULL);
+}
+
+int
+arg_parse_window(const char *arg, struct session **s, int *idx)
+{
+	char		*arg2, *ptr;
+	const char	*errstr;
+
+	*idx = -1;
+
+	/* Handle no argument or a single :. */
+	if (arg == NULL || (arg[0] == ':' && arg[1] == '\0')) {
+		*s = arg_parse_session(NULL);
+		return (0);
+	}
+
+	/* Find the separator if any. */
+	arg2 = xstrdup(arg);
+	ptr = strrchr(arg2, ':');
+
+	/*
+	 * If it is first, this means no session name, so use current session
+	 * and try to convert the rest as index.
+	 */
+	if (ptr == arg2) {
+		*idx = strtonum(ptr + 1, 0, INT_MAX, &errstr);
+		if (errstr != NULL) {
+			xfree(arg2);
+			return (1);
+		}
+
+		xfree(arg2);
+		*s = arg_parse_session(NULL);
+		return (0);
+	}
+
+	/* If missing, try as an index, else look up immediately. */
+	if (ptr == NULL) {
+		*idx = strtonum(arg2, 0, INT_MAX, &errstr);
+		if (errstr == NULL) {
+			/* This is good as an index; use current session. */
+			xfree(arg2);
+			*s = arg_parse_session(NULL);
+			return (0);
+		}
+
+		*idx = -1;
+		goto lookup;
+	}
+
+	/* If last, strip it and look up as a session. */
+	if (ptr[1] == '\0') {
+		*ptr = '\0';
+		goto lookup;
+	}
+
+	/* Present but not first and not last. Break and convert both. */
+	*ptr = '\0';
+	*idx = strtonum(ptr + 1, 0, INT_MAX, &errstr);
+	if (errstr != NULL) {
+		xfree(arg2);
+		return (1);
+	}
+
+lookup:
+	/* Look up as session. */
+	*s = arg_parse_session(arg2);
+	xfree(arg2);
+	if (*s == NULL)
+		return (1);
+	return (0);
+}