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tmux/cmd-show-environment.c

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2011-07-09 09:42:33 +00:00
/* $Id$ */
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
/*
* Copyright (c) 2009 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 <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Show environment.
*/
Sync OpenBSD patchset 1151: Make command exec functions return an enum rather than -1/0/1 values and add a new value to mean "leave client running but don't attach" to fix problems with using some commands in a command sequence. Most of the work by Thomas Adam, problem reported by "jspenguin" on SF bug 3535531.
2012-07-11 19:37:32 +00:00
enum cmd_retval cmd_show_environment_exec(struct cmd *, struct cmd_ctx *);
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
const struct cmd_entry cmd_show_environment_entry = {
"show-environment", "showenv",
Sync OpenBSD patchset 1079: Accept an argument to show-environment to show one variable, based on a diff from Kazuhiko Sakaguchi.
2012-03-29 21:10:10 +00:00
"gt:", 0, 1,
"[-g] " CMD_TARGET_SESSION_USAGE " [name]",
Sync OpenBSD patchset 829: Clean up and simplify tmux command argument parsing. Originally, tmux commands were parsed in the client process into a struct with the command data which was then serialised and sent to the server to be executed. The parsing was later moved into the server (an argv was sent from the client), but the parse step and intermediate struct was kept. This change removes that struct and the separate parse step. Argument parsing and printing is now common to all commands (in arguments.c) with each command left with just an optional check function (to validate the arguments at parse time), the exec function and a function to set up any key bindings (renamed from the old init function). This is overall more simple and consistent. There should be no changes to any commands behaviour or syntax although as this touches every command please watch for any unexpected changes.
2011-01-07 14:45:34 +00:00
0,
NULL,
NULL,
cmd_show_environment_exec
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
};
Sync OpenBSD patchset 1151: Make command exec functions return an enum rather than -1/0/1 values and add a new value to mean "leave client running but don't attach" to fix problems with using some commands in a command sequence. Most of the work by Thomas Adam, problem reported by "jspenguin" on SF bug 3535531.
2012-07-11 19:37:32 +00:00
enum cmd_retval
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
cmd_show_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
{
Sync OpenBSD patchset 829: Clean up and simplify tmux command argument parsing. Originally, tmux commands were parsed in the client process into a struct with the command data which was then serialised and sent to the server to be executed. The parsing was later moved into the server (an argv was sent from the client), but the parse step and intermediate struct was kept. This change removes that struct and the separate parse step. Argument parsing and printing is now common to all commands (in arguments.c) with each command left with just an optional check function (to validate the arguments at parse time), the exec function and a function to set up any key bindings (renamed from the old init function). This is overall more simple and consistent. There should be no changes to any commands behaviour or syntax although as this touches every command please watch for any unexpected changes.
2011-01-07 14:45:34 +00:00
struct args *args = self->args;
struct session *s;
struct environ *env;
struct environ_entry *envent;
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
Sync OpenBSD patchset 829: Clean up and simplify tmux command argument parsing. Originally, tmux commands were parsed in the client process into a struct with the command data which was then serialised and sent to the server to be executed. The parsing was later moved into the server (an argv was sent from the client), but the parse step and intermediate struct was kept. This change removes that struct and the separate parse step. Argument parsing and printing is now common to all commands (in arguments.c) with each command left with just an optional check function (to validate the arguments at parse time), the exec function and a function to set up any key bindings (renamed from the old init function). This is overall more simple and consistent. There should be no changes to any commands behaviour or syntax although as this touches every command please watch for any unexpected changes.
2011-01-07 14:45:34 +00:00
if (args_has(self->args, 'g'))
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
env = &global_environ;
else {
|PatchSet 882 |Date: 2011/04/05 20:37:01 |Author: nicm |Branch: HEAD |Tag: (none) |Log: |Add a flag to cmd_find_session so that attach-session can prefer |unattached sessions when choosing the most recently used (if -t is not |given). Suggested by claudio@.
2011-04-06 22:24:01 +00:00
if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
Sync OpenBSD patchset 1151: Make command exec functions return an enum rather than -1/0/1 values and add a new value to mean "leave client running but don't attach" to fix problems with using some commands in a command sequence. Most of the work by Thomas Adam, problem reported by "jspenguin" on SF bug 3535531.
2012-07-11 19:37:32 +00:00
return (CMD_RETURN_ERROR);
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
env = &s->environ;
}
Sync OpenBSD patchset 1079: Accept an argument to show-environment to show one variable, based on a diff from Kazuhiko Sakaguchi.
2012-03-29 21:10:10 +00:00
if (args->argc != 0) {
envent = environ_find(env, args->argv[0]);
if (envent == NULL) {
ctx->error(ctx, "unknown variable: %s", args->argv[0]);
Sync OpenBSD patchset 1151: Make command exec functions return an enum rather than -1/0/1 values and add a new value to mean "leave client running but don't attach" to fix problems with using some commands in a command sequence. Most of the work by Thomas Adam, problem reported by "jspenguin" on SF bug 3535531.
2012-07-11 19:37:32 +00:00
return (CMD_RETURN_ERROR);
Sync OpenBSD patchset 1079: Accept an argument to show-environment to show one variable, based on a diff from Kazuhiko Sakaguchi.
2012-03-29 21:10:10 +00:00
}
if (envent->value != NULL)
ctx->print(ctx, "%s=%s", envent->name, envent->value);
else
ctx->print(ctx, "-%s", envent->name);
Sync OpenBSD patchset 1151: Make command exec functions return an enum rather than -1/0/1 values and add a new value to mean "leave client running but don't attach" to fix problems with using some commands in a command sequence. Most of the work by Thomas Adam, problem reported by "jspenguin" on SF bug 3535531.
2012-07-11 19:37:32 +00:00
return (CMD_RETURN_NORMAL);
Sync OpenBSD patchset 1079: Accept an argument to show-environment to show one variable, based on a diff from Kazuhiko Sakaguchi.
2012-03-29 21:10:10 +00:00
}
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
RB_FOREACH(envent, environ, env) {
if (envent->value != NULL)
ctx->print(ctx, "%s=%s", envent->name, envent->value);
else
ctx->print(ctx, "-%s", envent->name);
}
Sync OpenBSD patchset 1151: Make command exec functions return an enum rather than -1/0/1 values and add a new value to mean "leave client running but don't attach" to fix problems with using some commands in a command sequence. Most of the work by Thomas Adam, problem reported by "jspenguin" on SF bug 3535531.
2012-07-11 19:37:32 +00:00
return (CMD_RETURN_NORMAL);
Sync OpenBSD patchset 231: Infrastructure and commands to manage the environment for processes started within tmux. There is a global environment, copied from the external environment when the server is started and each session has an (initially empty) session environment which overrides it. New commands set-environment and show-environment manipulate or display the environments. A new session option, update-environment, is a space-separated list of variables which are updated from the external environment into the session environment every time a new session is created - the default is DISPLAY.
2009-08-09 17:48:55 +00:00
}
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