zhenyi
86 lines
2.8 KiB
Rust
86 lines
2.8 KiB
Rust
//! Copyright (c) 2022-2026 GitDataAi All rights reserved.
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use crate::bare::GitBare;
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use crate::error::{GitError, GitResult};
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use crate::pb::{GetCommitDiffRequest, GetDiffRequest, GetDiffResponse};
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use crate::resolve_revision;
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impl GitBare {
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pub fn get_commit_diff(&self, request: GetCommitDiffRequest) -> GitResult<GetDiffResponse> {
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let commit = resolve_revision!(request.commit);
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let base = self.first_parent_or_empty_tree(&commit)?;
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self.get_diff(GetDiffRequest {
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repository: request.repository,
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base: Some(crate::pb::ObjectSelector {
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selector: Some(crate::pb::object_selector::Selector::Revision(
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crate::pb::ObjectName { revision: base },
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)),
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}),
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head: Some(crate::pb::ObjectSelector {
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selector: Some(crate::pb::object_selector::Selector::Revision(
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crate::pb::ObjectName { revision: commit },
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)),
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}),
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options: request.options,
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pagination: request.pagination,
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})
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}
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fn first_parent_or_empty_tree(&self, commit: &str) -> GitResult<String> {
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let result = duct::cmd(
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"git",
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[
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"--git-dir",
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self.bare_dir.to_string_lossy().as_ref(),
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"rev-list",
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"--parents",
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"-n",
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"1",
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commit,
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],
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)
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.stdout_capture()
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.stderr_capture()
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.unchecked()
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.run()?;
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if !result.status.success() {
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return Err(GitError::CommandFailed {
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status_code: result.status.code(),
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stderr: String::from_utf8_lossy(&result.stderr).into_owned(),
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});
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}
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let output = String::from_utf8_lossy(&result.stdout);
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let parts = output.split_whitespace().collect::<Vec<_>>();
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if let Some(parent) = parts.get(1) {
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return Ok((*parent).to_string());
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}
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let empty_tree = duct::cmd(
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"git",
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[
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"--git-dir",
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self.bare_dir.to_string_lossy().as_ref(),
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"hash-object",
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"-t",
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"tree",
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"-w",
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"--stdin",
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],
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)
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.stdin_bytes(Vec::<u8>::new())
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.stdout_capture()
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.stderr_capture()
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.unchecked()
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.run()?;
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if !empty_tree.status.success() {
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return Err(GitError::CommandFailed {
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status_code: empty_tree.status.code(),
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stderr: String::from_utf8_lossy(&empty_tree.stderr).into_owned(),
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});
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}
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Ok(String::from_utf8_lossy(&empty_tree.stdout)
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.trim()
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.to_string())
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}
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}
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