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/* $OpenBSD: cmd-set-environment.c,v 1.18 2016/03/03 14:15:22 nicm Exp $ */ |
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/* |
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* Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com> |
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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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.name = "set-environment", |
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.alias = "setenv", |
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.args = { "grt:u", 1, 2 }, |
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.usage = "[-gru] " CMD_TARGET_SESSION_USAGE " name [value]", |
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.tflag = CMD_SESSION_CANFAIL, |
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.flags = 0, |
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.exec = 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 environ *env; |
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const char *name, *value, *target; |
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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 (cmdq->state.tflag.s == NULL) { |
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target = args_get(args, 't'); |
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if (target != NULL) |
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cmdq_error(cmdq, "no such session: %s", target); |
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else |
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cmdq_error(cmdq, "no current session"); |
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return (CMD_RETURN_ERROR); |
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} |
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env = cmdq->state.tflag.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_clear(env, name); |
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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, "%s", value); |
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} |
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return (CMD_RETURN_NORMAL); |
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} |