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-rw-r--r--Cargo.toml2
-rw-r--r--README.rst5
-rw-r--r--src/vtcol.rs48
3 files changed, 54 insertions, 1 deletions
diff --git a/Cargo.toml b/Cargo.toml
index 6dfc369..9a7e672 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@
[package]
name = "vtcol"
description = "Set Linux console color scheme"
-version = "0.42.3"
+version = "0.42.4"
authors = [ "Philipp Gesang <phg@phi-gamma.net>" ]
repository = "https://github.com/phi-gamma/vtcol"
keywords = [ "linux", "virtual_terminal", "tty", "console", "system" ]
diff --git a/README.rst b/README.rst
index 58ec09a..1809902 100644
--- a/README.rst
+++ b/README.rst
@@ -42,6 +42,11 @@ To show the current scheme of the active console use the ``get`` subcommand: ::
$ vtcol get
solarized_dark
+It is also possible to use vtcol to switch between two themes by means of the
+``toggle`` subcommand. E. g. to cycle between “dark mode” and “light mode”: ::
+
+ $ vtcol toggle solarized solarized_light
+
To view a scheme’s definition, for instance in order to verify that **vtcol**
parses it correctly, use the ``dump`` command. ::
diff --git a/src/vtcol.rs b/src/vtcol.rs
index 45cbbd4..81f586f 100644
--- a/src/vtcol.rs
+++ b/src/vtcol.rs
@@ -185,6 +185,8 @@ enum Job
Set(Scheme),
/** Get currently active scheme. */
Get,
+ /** Toggle between two schemes. */
+ Toggle(Scheme, Scheme),
}
impl<'a> Job
@@ -231,6 +233,22 @@ impl<'a> Job
.subcommand(
SubCommand::with_name("get").about("get current color scheme"),
)
+ .subcommand(
+ SubCommand::with_name("toggle")
+ .about("toggle between two schemes")
+ .arg(
+ Arg::with_name("one")
+ .value_name("NAME1")
+ .help("predefined color scheme")
+ .takes_value(true),
+ )
+ .arg(
+ Arg::with_name("two")
+ .value_name("NAME2")
+ .help("predefined color scheme")
+ .takes_value(true),
+ ),
+ )
.arg(
Arg::with_name("verbose")
.short("v")
@@ -276,6 +294,18 @@ impl<'a> Job
Ok(Self::Set(scheme))
},
("get", _) => Ok(Self::Get),
+ ("toggle", Some(subm)) => {
+ match (subm.value_of("one"), subm.value_of("two")) {
+ (Some(one), Some(two)) => {
+ vrb!("toggle schemes [{}] and [{}]", one, two);
+ Ok(Self::Toggle(Scheme::from(one), Scheme::from(two)))
+ },
+ _ =>
+ Err(anyhow!(
+ "please supply two schemes to toggle between"
+ )),
+ }
+ },
(junk, _) =>
Err(anyhow!(
"invalid subcommand [{}]; try ``{} --help``",
@@ -323,6 +353,7 @@ impl<'a> Job
Self::List => Self::schemes(),
Self::Set(scm) => Self::set_scheme(scm)?,
Self::Get => Self::get_scheme()?,
+ Self::Toggle(one, two) => Self::toggle_scheme(one, two)?,
}
Ok(())
@@ -357,6 +388,23 @@ impl<'a> Job
Ok(())
}
+
+ /** Toggle between two schemes. Defaults to ``one`` in case neither scheme
+ is active.
+ */
+ fn toggle_scheme(one: Scheme, two: Scheme) -> Result<()>
+ {
+ let fd = get_console_fd()?;
+ vrb!("console fd: {}", fd);
+
+ let pal = ioctl_gio_cmap(fd)?;
+
+ if pal == Palette::from(&one) {
+ Self::set_scheme(two)
+ } else {
+ Self::set_scheme(one)
+ }
+ }
} /* [impl Job] */
/* Rust appears to come with two wrappers for ``ioctl(2)``, but neither can be utilized for our