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// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package git
import (
"bytes"
"fmt"
"github.com/mcuadros/go-version"
)
// CheckAttributeOpts represents the possible options to CheckAttribute
type CheckAttributeOpts struct {
CachedOnly bool
AllAttributes bool
Attributes []string
Filenames []string
}
// CheckAttribute return the Blame object of file
func (repo *Repository) CheckAttribute(opts CheckAttributeOpts) (map[string]map[string]string, error) {
binVersion, err := BinVersion()
if err != nil {
return nil, fmt.Errorf("Git version missing: %v", err)
}
stdOut := new(bytes.Buffer)
stdErr := new(bytes.Buffer)
cmdArgs := []string{"check-attr", "-z"}
if opts.AllAttributes {
cmdArgs = append(cmdArgs, "-a")
} else {
for _, attribute := range opts.Attributes {
if attribute != "" {
cmdArgs = append(cmdArgs, attribute)
}
}
}
// git check-attr --cached first appears in git 1.7.8
if opts.CachedOnly && version.Compare(binVersion, "1.7.8", ">=") {
cmdArgs = append(cmdArgs, "--cached")
}
cmdArgs = append(cmdArgs, "--")
for _, arg := range opts.Filenames {
if arg != "" {
cmdArgs = append(cmdArgs, arg)
}
}
cmd := NewCommand(cmdArgs...)
if err := cmd.RunInDirPipeline(repo.Path, stdOut, stdErr); err != nil {
return nil, fmt.Errorf("Failed to run check-attr: %v\n%s\n%s", err, stdOut.String(), stdErr.String())
}
fields := bytes.Split(stdOut.Bytes(), []byte{'\000'})
if len(fields)%3 != 1 {
return nil, fmt.Errorf("Wrong number of fields in return from check-attr")
}
var name2attribute2info = make(map[string]map[string]string)
for i := 0; i < (len(fields) / 3); i++ {
filename := string(fields[3*i])
attribute := string(fields[3*i+1])
info := string(fields[3*i+2])
attribute2info := name2attribute2info[filename]
if attribute2info == nil {
attribute2info = make(map[string]string)
}
attribute2info[attribute] = info
name2attribute2info[filename] = attribute2info
}
return name2attribute2info, nil
}
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