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package commit
import (
"bufio"
"context"
"fmt"
"gitlab.com/gitlab-org/gitaly/v15/structerr"
"strconv"
"strings"
"gitlab.com/gitlab-org/gitaly/proto/v15/go/gitalypb"
"gitlab.com/gitlab-org/gitaly/v15/internal/git"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/service"
)
func validateCommitStatsRequest(in *gitalypb.CommitStatsRequest) error {
if err := service.ValidateRepository(in.GetRepository()); err != nil {
return err
}
if err := git.ValidateRevision(in.Revision); err != nil {
return err
}
return nil
}
func (s *server) CommitStats(ctx context.Context, in *gitalypb.CommitStatsRequest) (*gitalypb.CommitStatsResponse, error) {
if err := validateCommitStatsRequest(in); err != nil {
return nil, structerr.NewInvalidArgument("%w", err)
}
resp, err := s.commitStats(ctx, in)
if err != nil {
return nil, structerr.NewInternal("%w", err)
}
return resp, nil
}
func (s *server) commitStats(ctx context.Context, in *gitalypb.CommitStatsRequest) (*gitalypb.CommitStatsResponse, error) {
repo := s.localrepo(in.GetRepository())
commit, err := repo.ReadCommit(ctx, git.Revision(in.Revision))
if err != nil {
return nil, err
}
if commit == nil {
return nil, fmt.Errorf("commit not found: %q", in.Revision)
}
var args []string
if len(commit.GetParentIds()) == 0 {
args = append(args, git.ObjectHashSHA1.EmptyTreeOID.String(), commit.Id)
} else {
args = append(args, commit.Id+"^", commit.Id)
}
cmd, err := repo.Exec(ctx, git.Command{
Name: "diff",
Flags: []git.Option{git.Flag{Name: "--numstat"}},
Args: args,
})
if err != nil {
return nil, err
}
scanner := bufio.NewScanner(cmd)
var added, deleted int32
for scanner.Scan() {
split := strings.SplitN(scanner.Text(), "\t", 3)
if len(split) != 3 {
return nil, fmt.Errorf("invalid numstat line %q", scanner.Text())
}
if split[0] == "-" && split[1] == "-" {
// binary file
continue
}
add64, err := strconv.ParseInt(split[0], 10, 32)
if err != nil {
return nil, err
}
added += int32(add64)
del64, err := strconv.ParseInt(split[1], 10, 32)
if err != nil {
return nil, err
}
deleted += int32(del64)
}
if err := scanner.Err(); err != nil {
return nil, err
}
if err := cmd.Wait(); err != nil {
return nil, err
}
return &gitalypb.CommitStatsResponse{
Oid: commit.Id,
Additions: added,
Deletions: deleted,
}, nil
}
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