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commands and allow a command to block execution of subsequent commands. This allows run-shell and if-shell to be synchronous which has been much requested. Each client has a default command queue and commands are consumed one at a time from it. A command may suspend execution from the queue by returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() - for example run-shell does this from the callback that is fired after the job is freed. When the command queue becomes empty, command clients are automatically exited (unless attaching). A callback is also fired - this is used for nested commands in, for example, if-shell which can block execution of the client's cmdq until a new cmdq becomes empty. Also merge all the old error/info/print functions together and lose the old curclient/cmdclient distinction - a cmdq is bound to one client (or none if in the configuration file), this is a command client if c->session is NULL otherwise an attached client.
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/* $Id$ */
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/*
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* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* Set an environment variable.
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*/
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enum cmd_retval cmd_set_environment_exec(struct cmd *, struct cmd_q *);
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const struct cmd_entry cmd_set_environment_entry = {
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"set-environment", "setenv",
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"grt:u", 1, 2,
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"[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
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0,
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NULL,
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NULL,
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cmd_set_environment_exec
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};
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enum cmd_retval
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cmd_set_environment_exec(struct cmd *self, struct cmd_q *cmdq)
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{
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struct args *args = self->args;
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struct session *s;
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struct environ *env;
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const char *name, *value;
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name = args->argv[0];
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if (*name == '\0') {
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cmdq_error(cmdq, "empty variable name");
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return (CMD_RETURN_ERROR);
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}
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if (strchr(name, '=') != NULL) {
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cmdq_error(cmdq, "variable name contains =");
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return (CMD_RETURN_ERROR);
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}
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if (args->argc < 2)
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value = NULL;
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else
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value = args->argv[1];
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if (args_has(self->args, 'g'))
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env = &global_environ;
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else {
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if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
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return (CMD_RETURN_ERROR);
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env = &s->environ;
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}
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if (args_has(self->args, 'u')) {
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if (value != NULL) {
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cmdq_error(cmdq, "can't specify a value with -u");
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return (CMD_RETURN_ERROR);
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}
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environ_unset(env, name);
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} else if (args_has(self->args, 'r')) {
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if (value != NULL) {
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cmdq_error(cmdq, "can't specify a value with -r");
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return (CMD_RETURN_ERROR);
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}
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environ_set(env, name, NULL);
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} else {
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if (value == NULL) {
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cmdq_error(cmdq, "no value specified");
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return (CMD_RETURN_ERROR);
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}
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environ_set(env, name, value);
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}
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return (CMD_RETURN_NORMAL);
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}
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