githaven/modules/git/parse_gogit.go
Chongyi Zheng e80466f734
Resolve lint for unused parameter and unnecessary type arguments (#30750)
Resolve all cases for `unused parameter` and `unnecessary type
arguments`

Related: #30729

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2024-04-29 08:47:56 +00:00

97 lines
2.8 KiB
Go

// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
//go:build gogit
package git
import (
"bytes"
"fmt"
"strconv"
"strings"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/filemode"
"github.com/go-git/go-git/v5/plumbing/hash"
"github.com/go-git/go-git/v5/plumbing/object"
)
// ParseTreeEntries parses the output of a `git ls-tree -l` command.
func ParseTreeEntries(data []byte) ([]*TreeEntry, error) {
return parseTreeEntries(data, nil)
}
func parseTreeEntries(data []byte, ptree *Tree) ([]*TreeEntry, error) {
entries := make([]*TreeEntry, 0, 10)
for pos := 0; pos < len(data); {
// expect line to be of the form "<mode> <type> <sha> <space-padded-size>\t<filename>"
entry := new(TreeEntry)
entry.gogitTreeEntry = &object.TreeEntry{}
entry.ptree = ptree
if pos+6 > len(data) {
return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
}
switch string(data[pos : pos+6]) {
case "100644":
entry.gogitTreeEntry.Mode = filemode.Regular
pos += 12 // skip over "100644 blob "
case "100755":
entry.gogitTreeEntry.Mode = filemode.Executable
pos += 12 // skip over "100755 blob "
case "120000":
entry.gogitTreeEntry.Mode = filemode.Symlink
pos += 12 // skip over "120000 blob "
case "160000":
entry.gogitTreeEntry.Mode = filemode.Submodule
pos += 14 // skip over "160000 object "
case "040000":
entry.gogitTreeEntry.Mode = filemode.Dir
pos += 12 // skip over "040000 tree "
default:
return nil, fmt.Errorf("unknown type: %v", string(data[pos:pos+6]))
}
// in hex format, not byte format ....
if pos+hash.Size*2 > len(data) {
return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
}
var err error
entry.ID, err = NewIDFromString(string(data[pos : pos+hash.Size*2]))
if err != nil {
return nil, fmt.Errorf("invalid ls-tree output: %w", err)
}
entry.gogitTreeEntry.Hash = plumbing.Hash(entry.ID.RawValue())
pos += 41 // skip over sha and trailing space
end := pos + bytes.IndexByte(data[pos:], '\t')
if end < pos {
return nil, fmt.Errorf("Invalid ls-tree -l output: %s", string(data))
}
entry.size, _ = strconv.ParseInt(strings.TrimSpace(string(data[pos:end])), 10, 64)
entry.sized = true
pos = end + 1
end = pos + bytes.IndexByte(data[pos:], '\n')
if end < pos {
return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
}
// In case entry name is surrounded by double quotes(it happens only in git-shell).
if data[pos] == '"' {
var err error
entry.gogitTreeEntry.Name, err = strconv.Unquote(string(data[pos:end]))
if err != nil {
return nil, fmt.Errorf("Invalid ls-tree output: %w", err)
}
} else {
entry.gogitTreeEntry.Name = string(data[pos:end])
}
pos = end + 1
entries = append(entries, entry)
}
return entries, nil
}