1 files changed, 104 insertions, 0 deletions
diff --git a/vendor/git2/examples/blame.rs b/vendor/git2/examples/blame.rs
new file mode 100644
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+++ b/vendor/git2/examples/blame.rs
@@ -0,0 +1,104 @@
+/*
+ * libgit2 "blame" example - shows how to use the blame API
+ *
+ * Written by the libgit2 contributors
+ *
+ * To the extent possible under law, the author(s) have dedicated all copyright
+ * and related and neighboring rights to this software to the public domain
+ * worldwide. This software is distributed without any warranty.
+ *
+ * You should have received a copy of the CC0 Public Domain Dedication along
+ * with this software. If not, see
+ * <http://creativecommons.org/publicdomain/zero/1.0/>.
+ */
+
+#![deny(warnings)]
+
+use git2::{BlameOptions, Repository};
+use std::io::{BufRead, BufReader};
+use std::path::Path;
+use structopt::StructOpt;
+
+#[derive(StructOpt)]
+#[allow(non_snake_case)]
+struct Args {
+    #[structopt(name = "path")]
+    arg_path: String,
+    #[structopt(name = "spec")]
+    arg_spec: Option<String>,
+    #[structopt(short = "M")]
+    /// find line moves within and across files
+    flag_M: bool,
+    #[structopt(short = "C")]
+    /// find line copies within and across files
+    flag_C: bool,
+    #[structopt(short = "F")]
+    /// follow only the first parent commits
+    flag_F: bool,
+}
+
+fn run(args: &Args) -> Result<(), git2::Error> {
+    let repo = Repository::open(".")?;
+    let path = Path::new(&args.arg_path[..]);
+
+    // Prepare our blame options
+    let mut opts = BlameOptions::new();
+    opts.track_copies_same_commit_moves(args.flag_M)
+        .track_copies_same_commit_copies(args.flag_C)
+        .first_parent(args.flag_F);
+
+    let mut commit_id = "HEAD".to_string();
+
+    // Parse spec
+    if let Some(spec) = args.arg_spec.as_ref() {
+        let revspec = repo.revparse(spec)?;
+
+        let (oldest, newest) = if revspec.mode().contains(git2::RevparseMode::SINGLE) {
+            (None, revspec.from())
+        } else if revspec.mode().contains(git2::RevparseMode::RANGE) {
+            (revspec.from(), revspec.to())
+        } else {
+            (None, None)
+        };
+
+        if let Some(commit) = oldest {
+            opts.oldest_commit(commit.id());
+        }
+
+        if let Some(commit) = newest {
+            opts.newest_commit(commit.id());
+            if !commit.id().is_zero() {
+                commit_id = format!("{}", commit.id())
+            }
+        }
+    }
+
+    let spec = format!("{}:{}", commit_id, path.display());
+    let blame = repo.blame_file(path, Some(&mut opts))?;
+    let object = repo.revparse_single(&spec[..])?;
+    let blob = repo.find_blob(object.id())?;
+    let reader = BufReader::new(blob.content());
+
+    for (i, line) in reader.lines().enumerate() {
+        if let (Ok(line), Some(hunk)) = (line, blame.get_line(i + 1)) {
+            let sig = hunk.final_signature();
+            println!(
+                "{} {} <{}> {}",
+                hunk.final_commit_id(),
+                String::from_utf8_lossy(sig.name_bytes()),
+                String::from_utf8_lossy(sig.email_bytes()),
+                line
+            );
+        }
+    }
+
+    Ok(())
+}
+
+fn main() {
+    let args = Args::from_args();
+    match run(&args) {
+        Ok(()) => {}
+        Err(e) => println!("error: {}", e),
+    }
+}