1 files changed, 84 insertions, 0 deletions
diff --git a/vendor/gix-prompt/src/types.rs b/vendor/gix-prompt/src/types.rs
new file mode 100644
index 000000000..cc938dd3a
--- /dev/null
+++ b/vendor/gix-prompt/src/types.rs
@@ -0,0 +1,84 @@
+use std::{borrow::Cow, convert::TryFrom, path::Path};
+
+/// The error returned by [ask()][crate::ask()].
+#[derive(Debug, thiserror::Error)]
+#[allow(missing_docs)]
+pub enum Error {
+    #[error("Terminal prompts are disabled")]
+    Disabled,
+    #[error("The current platform has no implementation for prompting in the terminal")]
+    UnsupportedPlatform,
+    #[error(
+        "Failed to open terminal at {:?} for writing prompt, or to write it",
+        crate::unix::TTY_PATH
+    )]
+    TtyIo(#[from] std::io::Error),
+    #[cfg(unix)]
+    #[error("Failed to obtain or set terminal configuration")]
+    TerminalConfiguration(#[from] nix::errno::Errno),
+}
+
+/// The way the user is prompted.
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+pub enum Mode {
+    /// Visibly show user input.
+    Visible,
+    /// Do not show user input, suitable for sensitive data.
+    Hidden,
+    /// Do not prompt the user at all but rather abort with an error. This is useful in conjunction with [Options::askpass].
+    Disable,
+}
+
+impl Default for Mode {
+    fn default() -> Self {
+        Mode::Hidden
+    }
+}
+
+/// The options used in `[ask()]`.
+#[derive(Default, Clone)]
+pub struct Options<'a> {
+    /// The path or name (for lookup in `PATH`) to the askpass program to call before prompting the user.
+    ///
+    /// It's called like this `askpass <prompt>`, but note that it won't know if the input should be hidden or not.
+    pub askpass: Option<Cow<'a, Path>>,
+    /// The way the user is prompted.
+    pub mode: Mode,
+}
+
+impl Options<'_> {
+    /// Change this instance to incorporate information from the environment.
+    ///
+    /// - if `use_git_askpass` is true, use `GIT_ASKPASS` to override any existing [`askpass`][Options::askpass] program
+    /// - otherwise fall back to the [`askpass`][Options::askpass] program already set
+    /// - or try to use the `SSH_ASKPASS` if `use_ssh_askpass` is true
+    ///
+    /// At the and of this process, the `askpass` program may be set depending on the rules above.
+    ///
+    /// Lastly, if `use_git_terminal_prompt` is set, use the `GIT_TERMINAL_PROMPT` environment variable and evaluate it as boolean,
+    /// and if false, set [`mode`][Options::mode] to `disable`.
+    pub fn apply_environment(
+        mut self,
+        use_git_askpass: bool,
+        use_ssh_askpass: bool,
+        use_git_terminal_prompt: bool,
+    ) -> Self {
+        if let Some(askpass) = use_git_askpass.then(|| std::env::var_os("GIT_ASKPASS")).flatten() {
+            self.askpass = Some(Cow::Owned(askpass.into()))
+        }
+        if self.askpass.is_none() {
+            if let Some(askpass) = use_ssh_askpass.then(|| std::env::var_os("SSH_ASKPASS")).flatten() {
+                self.askpass = Some(Cow::Owned(askpass.into()))
+            }
+        }
+        self.mode = use_git_terminal_prompt
+            .then(|| {
+                std::env::var_os("GIT_TERMINAL_PROMPT")
+                    .and_then(|val| gix_config_value::Boolean::try_from(val).ok())
+                    .and_then(|allow| (!allow.0).then_some(Mode::Disable))
+            })
+            .flatten()
+            .unwrap_or(self.mode);
+        self
+    }
+}