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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:41:41 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:41:41 +0000 |
commit | 10ee2acdd26a7f1298c6f6d6b7af9b469fe29b87 (patch) | |
tree | bdffd5d80c26cf4a7a518281a204be1ace85b4c1 /vendor/git2/src/buf.rs | |
parent | Releasing progress-linux version 1.70.0+dfsg1-9~progress7.99u1. (diff) | |
download | rustc-10ee2acdd26a7f1298c6f6d6b7af9b469fe29b87.tar.xz rustc-10ee2acdd26a7f1298c6f6d6b7af9b469fe29b87.zip |
Merging upstream version 1.70.0+dfsg2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/git2/src/buf.rs')
-rw-r--r-- | vendor/git2/src/buf.rs | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/vendor/git2/src/buf.rs b/vendor/git2/src/buf.rs new file mode 100644 index 000000000..fd2bcbf96 --- /dev/null +++ b/vendor/git2/src/buf.rs @@ -0,0 +1,71 @@ +use std::ops::{Deref, DerefMut}; +use std::ptr; +use std::slice; +use std::str; + +use crate::raw; +use crate::util::Binding; + +/// A structure to wrap an intermediate buffer used by libgit2. +/// +/// A buffer can be thought of a `Vec<u8>`, but the `Vec` type is not used to +/// avoid copying data back and forth. +pub struct Buf { + raw: raw::git_buf, +} + +impl Default for Buf { + fn default() -> Self { + Self::new() + } +} + +impl Buf { + /// Creates a new empty buffer. + pub fn new() -> Buf { + crate::init(); + unsafe { + Binding::from_raw(&mut raw::git_buf { + ptr: ptr::null_mut(), + size: 0, + reserved: 0, + } as *mut _) + } + } + + /// Attempt to view this buffer as a string slice. + /// + /// Returns `None` if the buffer is not valid utf-8. + pub fn as_str(&self) -> Option<&str> { + str::from_utf8(&**self).ok() + } +} + +impl Deref for Buf { + type Target = [u8]; + fn deref(&self) -> &[u8] { + unsafe { slice::from_raw_parts(self.raw.ptr as *const u8, self.raw.size as usize) } + } +} + +impl DerefMut for Buf { + fn deref_mut(&mut self) -> &mut [u8] { + unsafe { slice::from_raw_parts_mut(self.raw.ptr as *mut u8, self.raw.size as usize) } + } +} + +impl Binding for Buf { + type Raw = *mut raw::git_buf; + unsafe fn from_raw(raw: *mut raw::git_buf) -> Buf { + Buf { raw: *raw } + } + fn raw(&self) -> *mut raw::git_buf { + &self.raw as *const _ as *mut _ + } +} + +impl Drop for Buf { + fn drop(&mut self) { + unsafe { raw::git_buf_dispose(&mut self.raw) } + } +} |