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// Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
//
// 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.
use crate::*;
pub static CMD_SHOW_ENVIRONMENT_ENTRY: cmd_entry = cmd_entry {
name: "show-environment",
alias: Some("showenv"),
args: args_parse::new("hgst:", 0, 1, None),
usage: "[-hgs] [-t target-session] [variable]",
target: cmd_entry_flag::new(
b't',
cmd_find_type::CMD_FIND_SESSION,
cmd_find_flags::CMD_FIND_CANFAIL,
),
flags: cmd_flag::CMD_AFTERHOOK,
exec: cmd_show_environment_exec,
source: cmd_entry_flag::zeroed(),
};
/// C `vendor/tmux/cmd-show-environment.c:51`: `static char *cmd_show_environment_escape(struct environ_entry *envent)`
unsafe fn cmd_show_environment_escape(envent: *const environ_entry) -> *mut u8 {
unsafe {
let mut value = (*envent).value_ptr();
let ret: *mut u8 = xmalloc(strlen(value) * 2 + 1).as_ptr().cast(); /* at most twice the size */
let mut out = ret;
let mut c;
while {
c = *value;
value = value.add(1);
c != b'\0'
} {
// POSIX interprets $ ` " and \ in double quotes.
if c == b'$' || c == b'`' || c == b'"' || c == b'\\' {
*out = b'\\' as _;
out = out.add(1);
}
*out = c;
out = out.add(1);
}
*out = b'\0';
ret
}
}
/// C `vendor/tmux/cmd-show-environment.c:69`: `static void cmd_show_environment_print(struct cmd *self, struct cmdq_item *item, struct environ_entry *envent)`
unsafe fn cmd_show_environment_print(
self_: *mut cmd,
item: *mut cmdq_item,
envent: *mut environ_entry,
) {
unsafe {
let args = cmd_get_args(self_);
if !args_has(args, 'h') && (*envent).flags.intersects(ENVIRON_HIDDEN) {
return;
}
if args_has(args, 'h') && !(*envent).flags.intersects(ENVIRON_HIDDEN) {
return;
}
if !args_has(args, 's') {
if let Some(value) = (*envent).value.as_deref() {
cmdq_print!(
item,
"{}={}",
_s((*envent).name_ptr()),
_s(value.as_ptr().cast::<u8>())
);
} else {
cmdq_print!(item, "-{}", _s((*envent).name_ptr()));
}
return;
}
if (*envent).value.is_some() {
let escaped = cmd_show_environment_escape(envent);
cmdq_print!(
item,
"{}=\"{}\"; export {};",
_s((*envent).name_ptr()),
_s(escaped),
_s((*envent).name_ptr()),
);
free_(escaped);
} else {
cmdq_print!(item, "unset {};", _s((*envent).name_ptr()));
}
}
}
/// C `vendor/tmux/cmd-show-environment.c:98`: `static enum cmd_retval cmd_show_environment_exec(struct cmd *self, struct cmdq_item *item)`
unsafe fn cmd_show_environment_exec(self_: *mut cmd, item: *mut cmdq_item) -> cmd_retval {
unsafe {
let args = cmd_get_args(self_);
let target = cmdq_get_target(item);
let env: *mut environ;
let name = args_string(args, 0);
let mut tflag = args_get_(args, 't');
if !tflag.is_null() && (*target).s.is_null() {
cmdq_error!(item, "no such session: {}", _s(tflag));
return cmd_retval::CMD_RETURN_ERROR;
}
if args_has(args, 'g') {
env = GLOBAL_ENVIRON;
} else {
if (*target).s.is_null() {
tflag = args_get_(args, 't');
if !tflag.is_null() {
cmdq_error!(item, "no such session: {}", _s(tflag));
} else {
cmdq_error!(item, "no current session");
}
return cmd_retval::CMD_RETURN_ERROR;
}
env = (*(*target).s).environ;
}
let mut envent;
if !name.is_null() {
envent = environ_find(env, name);
if envent.is_null() {
cmdq_error!(item, "unknown variable: {}", _s(name));
return cmd_retval::CMD_RETURN_ERROR;
}
cmd_show_environment_print(self_, item, envent);
return cmd_retval::CMD_RETURN_NORMAL;
}
envent = environ_first(env);
while !envent.is_null() {
cmd_show_environment_print(self_, item, envent);
envent = environ_next(envent);
}
cmd_retval::CMD_RETURN_NORMAL
}
}