circlecloud
/
tmux
mirror of https://github.com/tmux/tmux.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Add a -s flag to show-environment to output Bourne shell commands a la 

ssh-agent. Mostly from Cam Hutchison with some changes by me.
pull/1165/head
nicm 2015-07-13 13:36:29 +00:00
parent cc768d77ec
commit 6308c48efd
2 changed files with 57 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
cmd-show-environment.c
View File

@ -27,16 +27,61 @@
* Show environment.
*/
enum cmd_retval cmd_show_environment_exec(struct cmd *, struct cmd_q *);
enum cmd_retval cmd_show_environment_exec(struct cmd *, struct cmd_q *);
char *cmd_show_environment_escape(struct environ_entry *);
void cmd_show_environment_print(struct cmd *, struct cmd_q *,
struct environ_entry *);
const struct cmd_entry cmd_show_environment_entry = {
"show-environment", "showenv",
"gt:", 0, 1,
"[-g] " CMD_TARGET_SESSION_USAGE " [name]",
"gst:", 0, 1,
"[-gs] " CMD_TARGET_SESSION_USAGE " [name]",
0,
cmd_show_environment_exec
};
char *
cmd_show_environment_escape(struct environ_entry *envent)
{
const char *value = envent->value;
char c, *out, *ret;
out = ret = xmalloc(strlen(value) * 2 + 1); /* at most twice the size */
while ((c = *value++) != '\0') {
/* POSIX interprets $ ` " and \ in double quotes. */
if (c == '$' || c == '`' || c == '"' || c == '\\')
*out++ = '\\';
*out++ = c;
}
*out = '\0';
return ret;
}
void
cmd_show_environment_print(struct cmd *self, struct cmd_q *cmdq,
struct environ_entry *envent)
{
char *escaped;
if (!args_has(self->args, 's')) {
if (envent->value != NULL)
cmdq_print(cmdq, "%s=%s", envent->name, envent->value);
else
cmdq_print(cmdq, "-%s", envent->name);
return;
}
if (envent->value != NULL) {
escaped = cmd_show_environment_escape(envent);
cmdq_print(cmdq, "%s=\"%s\"; export %s;", envent->name, escaped,
envent->name);
free(escaped);
} else
cmdq_print(cmdq, "unset %s;", envent->name);
}
enum cmd_retval
cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq)
{
@ -48,7 +93,8 @@ cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq)
if (args_has(self->args, 'g'))
env = &global_environ;
else {
if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
s = cmd_find_session(cmdq, args_get(args, 't'), 0);
if (s == NULL)
return (CMD_RETURN_ERROR);
env = &s->environ;
}
@ -59,19 +105,11 @@ cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq)
cmdq_error(cmdq, "unknown variable: %s", args->argv[0]);
return (CMD_RETURN_ERROR);
}
if (envent->value != NULL)
cmdq_print(cmdq, "%s=%s", envent->name, envent->value);
else
cmdq_print(cmdq, "-%s", envent->name);
cmd_show_environment_print(self, cmdq, envent);
return (CMD_RETURN_NORMAL);
}
RB_FOREACH(envent, environ, env) {
if (envent->value != NULL)
cmdq_print(cmdq, "%s=%s", envent->name, envent->value);
else
cmdq_print(cmdq, "-%s", envent->name);
}
RB_FOREACH(envent, environ, env)
cmd_show_environment_print(self, cmdq, envent);
return (CMD_RETURN_NORMAL);
}

5
tmux.1
View File

@ -3542,7 +3542,7 @@ flag unsets a variable.
indicates the variable is to be removed from the environment before starting a
new process.
.It Xo Ic show-environment
.Op Fl g
.Op Fl gs
.Op Fl t Ar target-session
.Op Ar variable
.Xc
@ -3556,6 +3556,9 @@ If
is omitted, all variables are shown.
Variables removed from the environment are prefixed with
.Ql - .
If
.Fl s
is used, the output is formatted as a set of Bourne shell commands.
.El
.Sh STATUS LINE
.Nm