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-rw-r--r--cmd-if-shell.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/cmd-if-shell.c b/cmd-if-shell.c
new file mode 100644
index 0000000..205a8ce
--- /dev/null
+++ b/cmd-if-shell.c
@@ -0,0 +1,190 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
+ * Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.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/wait.h>
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tmux.h"
+
+/*
+ * Executes a tmux command if a shell command returns true or false.
+ */
+
+static enum args_parse_type cmd_if_shell_args_parse(struct args *, u_int,
+ char **);
+static enum cmd_retval cmd_if_shell_exec(struct cmd *,
+ struct cmdq_item *);
+
+static void cmd_if_shell_callback(struct job *);
+static void cmd_if_shell_free(void *);
+
+const struct cmd_entry cmd_if_shell_entry = {
+ .name = "if-shell",
+ .alias = "if",
+
+ .args = { "bFt:", 2, 3, cmd_if_shell_args_parse },
+ .usage = "[-bF] " CMD_TARGET_PANE_USAGE " shell-command command "
+ "[command]",
+
+ .target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },
+
+ .flags = 0,
+ .exec = cmd_if_shell_exec
+};
+
+struct cmd_if_shell_data {
+ struct args_command_state *cmd_if;
+ struct args_command_state *cmd_else;
+
+ struct client *client;
+ struct cmdq_item *item;
+};
+
+static enum args_parse_type
+cmd_if_shell_args_parse(__unused struct args *args, u_int idx,
+ __unused char **cause)
+{
+ if (idx == 1 || idx == 2)
+ return (ARGS_PARSE_COMMANDS_OR_STRING);
+ return (ARGS_PARSE_STRING);
+}
+
+static enum cmd_retval
+cmd_if_shell_exec(struct cmd *self, struct cmdq_item *item)
+{
+ struct args *args = cmd_get_args(self);
+ struct cmd_find_state *target = cmdq_get_target(item);
+ struct cmd_if_shell_data *cdata;
+ struct cmdq_item *new_item;
+ char *shellcmd;
+ struct client *tc = cmdq_get_target_client(item);
+ struct session *s = target->s;
+ struct cmd_list *cmdlist;
+ u_int count = args_count(args);
+ int wait = !args_has(args, 'b');
+
+ shellcmd = format_single_from_target(item, args_string(args, 0));
+ if (args_has(args, 'F')) {
+ if (*shellcmd != '0' && *shellcmd != '\0')
+ cmdlist = args_make_commands_now(self, item, 1, 0);
+ else if (count == 3)
+ cmdlist = args_make_commands_now(self, item, 2, 0);
+ else {
+ free(shellcmd);
+ return (CMD_RETURN_NORMAL);
+ }
+ free(shellcmd);
+ if (cmdlist == NULL)
+ return (CMD_RETURN_ERROR);
+ new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
+ cmdq_insert_after(item, new_item);
+ return (CMD_RETURN_NORMAL);
+ }
+
+ cdata = xcalloc(1, sizeof *cdata);
+
+ cdata->cmd_if = args_make_commands_prepare(self, item, 1, NULL, wait,
+ 0);
+ if (count == 3) {
+ cdata->cmd_else = args_make_commands_prepare(self, item, 2,
+ NULL, wait, 0);
+ }
+
+ if (wait) {
+ cdata->client = cmdq_get_client(item);
+ cdata->item = item;
+ } else
+ cdata->client = tc;
+ if (cdata->client != NULL)
+ cdata->client->references++;
+
+ if (job_run(shellcmd, 0, NULL, NULL, s,
+ server_client_get_cwd(cmdq_get_client(item), s), NULL,
+ cmd_if_shell_callback, cmd_if_shell_free, cdata, 0, -1,
+ -1) == NULL) {
+ cmdq_error(item, "failed to run command: %s", shellcmd);
+ free(shellcmd);
+ free(cdata);
+ return (CMD_RETURN_ERROR);
+ }
+ free(shellcmd);
+
+ if (!wait)
+ return (CMD_RETURN_NORMAL);
+ return (CMD_RETURN_WAIT);
+}
+
+static void
+cmd_if_shell_callback(struct job *job)
+{
+ struct cmd_if_shell_data *cdata = job_get_data(job);
+ struct client *c = cdata->client;
+ struct cmdq_item *item = cdata->item, *new_item;
+ struct args_command_state *state;
+ struct cmd_list *cmdlist;
+ char *error;
+ int status;
+
+ status = job_get_status(job);
+ if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
+ state = cdata->cmd_else;
+ else
+ state = cdata->cmd_if;
+ if (state == NULL)
+ goto out;
+
+ cmdlist = args_make_commands(state, 0, NULL, &error);
+ if (cmdlist == NULL) {
+ if (cdata->item == NULL) {
+ *error = toupper((u_char)*error);
+ status_message_set(c, -1, 1, 0, "%s", error);
+ } else
+ cmdq_error(cdata->item, "%s", error);
+ free(error);
+ } else if (item == NULL) {
+ new_item = cmdq_get_command(cmdlist, NULL);
+ cmdq_append(c, new_item);
+ } else {
+ new_item = cmdq_get_command(cmdlist, cmdq_get_state(item));
+ cmdq_insert_after(item, new_item);
+ }
+
+out:
+ if (cdata->item != NULL)
+ cmdq_continue(cdata->item);
+}
+
+static void
+cmd_if_shell_free(void *data)
+{
+ struct cmd_if_shell_data *cdata = data;
+
+ if (cdata->client != NULL)
+ server_client_unref(cdata->client);
+
+ if (cdata->cmd_else != NULL)
+ args_make_commands_free(cdata->cmd_else);
+ args_make_commands_free(cdata->cmd_if);
+
+ free(cdata);
+}