Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 99 insertions, 0 deletions

diff --git a/vendor/gix-config-value/src/boolean.rs b/vendor/gix-config-value/src/boolean.rs
new file mode 100644
index 000000000..908e11a30
--- /dev/null
+++ b/vendor/gix-config-value/src/boolean.rs
@@ -0,0 +1,99 @@
+use std::{borrow::Cow, convert::TryFrom, ffi::OsString, fmt::Display};
+
+use bstr::{BStr, BString, ByteSlice};
+
+use crate::{Boolean, Error};
+
+fn bool_err(input: impl Into<BString>) -> Error {
+    Error::new(
+        "Booleans need to be 'no', 'off', 'false', '' or 'yes', 'on', 'true' or any number",
+        input,
+    )
+}
+
+impl TryFrom<OsString> for Boolean {
+    type Error = Error;
+
+    fn try_from(value: OsString) -> Result<Self, Self::Error> {
+        let value = gix_path::os_str_into_bstr(&value)
+            .map_err(|_| Error::new("Illformed UTF-8", std::path::Path::new(&value).display().to_string()))?;
+        Self::try_from(value)
+    }
+}
+
+/// # Warning
+///
+/// The direct usage of `try_from("string")` is discouraged as it will produce the wrong result for values
+/// obtained from `core.bool-implicit-true`, which have no separator and are implicitly true.
+/// This method chooses to work correctly for `core.bool-empty=`, which is an empty string and resolves
+/// to being `false`.
+///
+/// Instead of this, obtain booleans with `config.boolean(…)`, which handles the case were no separator is
+/// present correctly.
+impl TryFrom<&BStr> for Boolean {
+    type Error = Error;
+
+    fn try_from(value: &BStr) -> Result<Self, Self::Error> {
+        if parse_true(value) {
+            Ok(Boolean(true))
+        } else if parse_false(value) {
+            Ok(Boolean(false))
+        } else {
+            use std::str::FromStr;
+            if let Some(integer) = value.to_str().ok().and_then(|s| i64::from_str(s).ok()) {
+                Ok(Boolean(integer != 0))
+            } else {
+                Err(bool_err(value))
+            }
+        }
+    }
+}
+
+impl Boolean {
+    /// Return true if the boolean is a true value.
+    ///
+    /// Note that the inner value is accessible directly as well.
+    pub fn is_true(self) -> bool {
+        self.0
+    }
+}
+
+impl TryFrom<Cow<'_, BStr>> for Boolean {
+    type Error = Error;
+    fn try_from(c: Cow<'_, BStr>) -> Result<Self, Self::Error> {
+        Self::try_from(c.as_ref())
+    }
+}
+
+impl Display for Boolean {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
+impl From<Boolean> for bool {
+    fn from(b: Boolean) -> Self {
+        b.0
+    }
+}
+
+#[cfg(feature = "serde")]
+impl serde::Serialize for Boolean {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        serializer.serialize_bool(self.0)
+    }
+}
+
+fn parse_true(value: &BStr) -> bool {
+    value.eq_ignore_ascii_case(b"yes") || value.eq_ignore_ascii_case(b"on") || value.eq_ignore_ascii_case(b"true")
+}
+
+fn parse_false(value: &BStr) -> bool {
+    value.eq_ignore_ascii_case(b"no")
+        || value.eq_ignore_ascii_case(b"off")
+        || value.eq_ignore_ascii_case(b"false")
+        || value.is_empty()
+}