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use std::ffi::CString;
use std::marker;
use std::str;
use crate::util::Binding;
use crate::{raw, Buf, Direction, Error};
/// A structure to represent a git [refspec][1].
///
/// Refspecs are currently mainly accessed/created through a `Remote`.
///
/// [1]: http://git-scm.com/book/en/Git-Internals-The-Refspec
pub struct Refspec<'remote> {
raw: *const raw::git_refspec,
_marker: marker::PhantomData<&'remote raw::git_remote>,
}
impl<'remote> Refspec<'remote> {
/// Get the refspec's direction.
pub fn direction(&self) -> Direction {
match unsafe { raw::git_refspec_direction(self.raw) } {
raw::GIT_DIRECTION_FETCH => Direction::Fetch,
raw::GIT_DIRECTION_PUSH => Direction::Push,
n => panic!("unknown refspec direction: {}", n),
}
}
/// Get the destination specifier.
///
/// If the destination is not utf-8, None is returned.
pub fn dst(&self) -> Option<&str> {
str::from_utf8(self.dst_bytes()).ok()
}
/// Get the destination specifier, in bytes.
pub fn dst_bytes(&self) -> &[u8] {
unsafe { crate::opt_bytes(self, raw::git_refspec_dst(self.raw)).unwrap() }
}
/// Check if a refspec's destination descriptor matches a reference
pub fn dst_matches(&self, refname: &str) -> bool {
let refname = CString::new(refname).unwrap();
unsafe { raw::git_refspec_dst_matches(self.raw, refname.as_ptr()) == 1 }
}
/// Get the source specifier.
///
/// If the source is not utf-8, None is returned.
pub fn src(&self) -> Option<&str> {
str::from_utf8(self.src_bytes()).ok()
}
/// Get the source specifier, in bytes.
pub fn src_bytes(&self) -> &[u8] {
unsafe { crate::opt_bytes(self, raw::git_refspec_src(self.raw)).unwrap() }
}
/// Check if a refspec's source descriptor matches a reference
pub fn src_matches(&self, refname: &str) -> bool {
let refname = CString::new(refname).unwrap();
unsafe { raw::git_refspec_src_matches(self.raw, refname.as_ptr()) == 1 }
}
/// Get the force update setting.
pub fn is_force(&self) -> bool {
unsafe { raw::git_refspec_force(self.raw) == 1 }
}
/// Get the refspec's string.
///
/// Returns None if the string is not valid utf8.
pub fn str(&self) -> Option<&str> {
str::from_utf8(self.bytes()).ok()
}
/// Get the refspec's string as a byte array
pub fn bytes(&self) -> &[u8] {
unsafe { crate::opt_bytes(self, raw::git_refspec_string(self.raw)).unwrap() }
}
/// Transform a reference to its target following the refspec's rules
pub fn transform(&self, name: &str) -> Result<Buf, Error> {
let name = CString::new(name).unwrap();
unsafe {
let buf = Buf::new();
try_call!(raw::git_refspec_transform(
buf.raw(),
self.raw,
name.as_ptr()
));
Ok(buf)
}
}
/// Transform a target reference to its source reference following the refspec's rules
pub fn rtransform(&self, name: &str) -> Result<Buf, Error> {
let name = CString::new(name).unwrap();
unsafe {
let buf = Buf::new();
try_call!(raw::git_refspec_rtransform(
buf.raw(),
self.raw,
name.as_ptr()
));
Ok(buf)
}
}
}
impl<'remote> Binding for Refspec<'remote> {
type Raw = *const raw::git_refspec;
unsafe fn from_raw(raw: *const raw::git_refspec) -> Refspec<'remote> {
Refspec {
raw,
_marker: marker::PhantomData,
}
}
fn raw(&self) -> *const raw::git_refspec {
self.raw
}
}
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