From 68410f0da2af88cd8ecec99f46e1121aa6d8cc3c Mon Sep 17 00:00:00 2001
From: Danny Rosseau <daniel.rosseau@gmail.com>
Date: Tue, 18 Jul 2017 11:12:16 -0600
Subject: [PATCH] Added not builtin
---
examples/not.ion | 6 ++++++
examples/not.out | 6 ++++++
src/builtins/mod.rs | 14 ++++++++++++++
3 files changed, 26 insertions(+)
create mode 100644 examples/not.ion
create mode 100644 examples/not.out
diff --git a/examples/not.ion b/examples/not.ion
new file mode 100644
index 00000000..ef5f4b36
--- /dev/null
+++ b/examples/not.ion
@@ -0,0 +1,6 @@
+not true || echo not true
+not false && echo not false
+true && not false && echo true and not false
+not test -z "a" && echo not test
+not echo hello
+echo $?
\ No newline at end of file
diff --git a/examples/not.out b/examples/not.out
new file mode 100644
index 00000000..fa385d52
--- /dev/null
+++ b/examples/not.out
@@ -0,0 +1,6 @@
+not true
+not false
+true and not false
+not test
+hello
+-1
diff --git a/src/builtins/mod.rs b/src/builtins/mod.rs
index d87aa627..60ea45d6 100644
--- a/src/builtins/mod.rs
+++ b/src/builtins/mod.rs
@@ -193,6 +193,20 @@ impl Builtin {
});
/* Misc */
+ commands.insert("not",
+ Builtin {
+ name: "not",
+ help: "Reverses the exit status value of the given command.",
+ main: Box::new(|args: &[&str], shell: &mut Shell| -> i32 {
+ let cmd = args[1..].join(" ");
+ shell.on_command(&cmd);
+ match shell.previous_status {
+ SUCCESS => FAILURE,
+ FAILURE => SUCCESS,
+ _ => shell.previous_status
+ }
+ }),
+ });
commands.insert("set",
Builtin {
name: "set",
--
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