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Add bindings for git email create (#847)
Add bindings for `git_email_create_from_diff()` and `git_email_create_from_commit()`. Deprecate `git_diff_format_email()` to reflect upstream changes.
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,183 @@ | ||
use std::ffi::CString; | ||
use std::{mem, ptr}; | ||
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use crate::util::Binding; | ||
use crate::{raw, Buf, Commit, DiffFindOptions, DiffOptions, Error, IntoCString}; | ||
use crate::{Diff, Oid, Signature}; | ||
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/// A structure to represent patch in mbox format for sending via email | ||
pub struct Email { | ||
buf: Buf, | ||
} | ||
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/// Options for controlling the formatting of the generated e-mail. | ||
pub struct EmailCreateOptions { | ||
diff_options: DiffOptions, | ||
diff_find_options: DiffFindOptions, | ||
subject_prefix: Option<CString>, | ||
raw: raw::git_email_create_options, | ||
} | ||
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impl Default for EmailCreateOptions { | ||
fn default() -> Self { | ||
// Defaults options created in corresponding to `GIT_EMAIL_CREATE_OPTIONS_INIT` | ||
let default_options = raw::git_email_create_options { | ||
version: raw::GIT_EMAIL_CREATE_OPTIONS_VERSION, | ||
flags: raw::GIT_EMAIL_CREATE_DEFAULT as u32, | ||
diff_opts: unsafe { mem::zeroed() }, | ||
diff_find_opts: unsafe { mem::zeroed() }, | ||
subject_prefix: ptr::null(), | ||
start_number: 1, | ||
reroll_number: 0, | ||
}; | ||
let mut diff_options = DiffOptions::new(); | ||
diff_options.show_binary(true).context_lines(3); | ||
Self { | ||
diff_options, | ||
diff_find_options: DiffFindOptions::new(), | ||
subject_prefix: None, | ||
raw: default_options, | ||
} | ||
} | ||
} | ||
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impl EmailCreateOptions { | ||
/// Creates a new set of email create options | ||
/// | ||
/// By default, options include rename detection and binary | ||
/// diffs to match `git format-patch`. | ||
pub fn new() -> Self { | ||
Self::default() | ||
} | ||
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fn flag(&mut self, opt: raw::git_email_create_flags_t, val: bool) -> &mut Self { | ||
let opt = opt as u32; | ||
if val { | ||
self.raw.flags |= opt; | ||
} else { | ||
self.raw.flags &= !opt; | ||
} | ||
self | ||
} | ||
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/// Flag indicating whether patch numbers are included in the subject prefix. | ||
pub fn omit_numbers(&mut self, omit: bool) -> &mut Self { | ||
self.flag(raw::GIT_EMAIL_CREATE_OMIT_NUMBERS, omit) | ||
} | ||
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/// Flag indicating whether numbers included in the subject prefix even when | ||
/// the patch is for a single commit (1/1). | ||
pub fn always_number(&mut self, always: bool) -> &mut Self { | ||
self.flag(raw::GIT_EMAIL_CREATE_ALWAYS_NUMBER, always) | ||
} | ||
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/// Flag indicating whether rename or similarity detection are ignored. | ||
pub fn ignore_renames(&mut self, ignore: bool) -> &mut Self { | ||
self.flag(raw::GIT_EMAIL_CREATE_NO_RENAMES, ignore) | ||
} | ||
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/// Get mutable access to `DiffOptions` that are used for creating diffs. | ||
pub fn diff_options(&mut self) -> &mut DiffOptions { | ||
&mut self.diff_options | ||
} | ||
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/// Get mutable access to `DiffFindOptions` that are used for finding | ||
/// similarities within diffs. | ||
pub fn diff_find_options(&mut self) -> &mut DiffFindOptions { | ||
&mut self.diff_find_options | ||
} | ||
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/// Set the subject prefix | ||
/// | ||
/// The default value for this is "PATCH". If set to an empty string ("") | ||
/// then only the patch numbers will be shown in the prefix. | ||
/// If the subject_prefix is empty and patch numbers are not being shown, | ||
/// the prefix will be omitted entirely. | ||
pub fn subject_prefix<T: IntoCString>(&mut self, t: T) -> &mut Self { | ||
self.subject_prefix = Some(t.into_c_string().unwrap()); | ||
self | ||
} | ||
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/// Set the starting patch number; this cannot be 0. | ||
/// | ||
/// The default value for this is 1. | ||
pub fn start_number(&mut self, number: usize) -> &mut Self { | ||
self.raw.start_number = number; | ||
self | ||
} | ||
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/// Set the "re-roll" number. | ||
/// | ||
/// The default value for this is 0 (no re-roll). | ||
pub fn reroll_number(&mut self, number: usize) -> &mut Self { | ||
self.raw.reroll_number = number; | ||
self | ||
} | ||
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/// Acquire a pointer to the underlying raw options. | ||
/// | ||
/// This function is unsafe as the pointer is only valid so long as this | ||
/// structure is not moved, modified, or used elsewhere. | ||
unsafe fn raw(&mut self) -> *const raw::git_email_create_options { | ||
self.raw.subject_prefix = self | ||
.subject_prefix | ||
.as_ref() | ||
.map(|s| s.as_ptr()) | ||
.unwrap_or(ptr::null()); | ||
self.raw.diff_opts = ptr::read(self.diff_options.raw()); | ||
self.raw.diff_find_opts = ptr::read(self.diff_find_options.raw()); | ||
&self.raw as *const _ | ||
} | ||
} | ||
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impl Email { | ||
/// Returns a byte slice with stored e-mail patch in. `Email` could be | ||
/// created by one of the `from_*` functions. | ||
pub fn as_slice(&self) -> &[u8] { | ||
&self.buf | ||
} | ||
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/// Create a diff for a commit in mbox format for sending via email. | ||
pub fn from_diff<T: IntoCString>( | ||
diff: &Diff<'_>, | ||
patch_idx: usize, | ||
patch_count: usize, | ||
commit_id: &Oid, | ||
summary: T, | ||
body: T, | ||
author: &Signature<'_>, | ||
opts: &mut EmailCreateOptions, | ||
) -> Result<Self, Error> { | ||
let buf = Buf::new(); | ||
let summary = summary.into_c_string()?; | ||
let body = body.into_c_string()?; | ||
unsafe { | ||
try_call!(raw::git_email_create_from_diff( | ||
buf.raw(), | ||
Binding::raw(diff), | ||
patch_idx, | ||
patch_count, | ||
Binding::raw(commit_id), | ||
summary.as_ptr(), | ||
body.as_ptr(), | ||
Binding::raw(author), | ||
opts.raw() | ||
)); | ||
Ok(Self { buf }) | ||
} | ||
} | ||
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/// Create a diff for a commit in mbox format for sending via email. | ||
/// The commit must not be a merge commit. | ||
pub fn from_commit(commit: &Commit<'_>, opts: &mut EmailCreateOptions) -> Result<Self, Error> { | ||
let buf = Buf::new(); | ||
unsafe { | ||
try_call!(raw::git_email_create_from_commit( | ||
buf.raw(), | ||
commit.raw(), | ||
opts.raw() | ||
)); | ||
Ok(Self { buf }) | ||
} | ||
} | ||
} |
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