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Annotation of src/usr.bin/tmux/cmd-show-environment.c, Revision 1.6

1.6     ! nicm        1: /* $OpenBSD: cmd-show-environment.c,v 1.5 2012/03/22 11:11:57 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
                      5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/types.h>
                     20:
                     21: #include <stdlib.h>
                     22: #include <string.h>
                     23:
                     24: #include "tmux.h"
                     25:
                     26: /*
                     27:  * Show environment.
                     28:  */
                     29:
1.6     ! nicm       30: enum cmd_retval         cmd_show_environment_exec(struct cmd *, struct cmd_ctx *);
1.1       nicm       31:
                     32: const struct cmd_entry cmd_show_environment_entry = {
                     33:        "show-environment", "showenv",
1.5       nicm       34:        "gt:", 0, 1,
                     35:        "[-g] " CMD_TARGET_SESSION_USAGE " [name]",
1.3       nicm       36:        0,
                     37:        NULL,
                     38:        NULL,
                     39:        cmd_show_environment_exec
1.1       nicm       40: };
                     41:
1.6     ! nicm       42: enum cmd_retval
1.1       nicm       43: cmd_show_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
                     44: {
1.3       nicm       45:        struct args             *args = self->args;
                     46:        struct session          *s;
                     47:        struct environ          *env;
                     48:        struct environ_entry    *envent;
1.1       nicm       49:
1.3       nicm       50:        if (args_has(self->args, 'g'))
1.1       nicm       51:                env = &global_environ;
                     52:        else {
1.4       nicm       53:                if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
1.6     ! nicm       54:                        return (CMD_RETURN_ERROR);
1.1       nicm       55:                env = &s->environ;
1.5       nicm       56:        }
                     57:
                     58:        if (args->argc != 0) {
                     59:                envent = environ_find(env, args->argv[0]);
                     60:                if (envent == NULL) {
                     61:                        ctx->error(ctx, "unknown variable: %s", args->argv[0]);
1.6     ! nicm       62:                        return (CMD_RETURN_ERROR);
1.5       nicm       63:                }
                     64:                if (envent->value != NULL)
                     65:                        ctx->print(ctx, "%s=%s", envent->name, envent->value);
                     66:                else
                     67:                        ctx->print(ctx, "-%s", envent->name);
1.6     ! nicm       68:                return (CMD_RETURN_NORMAL);
1.1       nicm       69:        }
                     70:
                     71:        RB_FOREACH(envent, environ, env) {
                     72:                if (envent->value != NULL)
                     73:                        ctx->print(ctx, "%s=%s", envent->name, envent->value);
                     74:                else
                     75:                        ctx->print(ctx, "-%s", envent->name);
                     76:        }
                     77:
1.6     ! nicm       78:        return (CMD_RETURN_NORMAL);
1.1       nicm       79: }