mirror of
https://github.com/go-gitea/gitea
synced 2024-11-24 22:42:48 +01:00
cbf923e87b
Refactor Hash interfaces and centralize hash function. This will allow easier introduction of different hash function later on. This forms the "no-op" part of the SHA256 enablement patch.
96 lines
2.8 KiB
Go
96 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(h ObjectFormat, 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 = IDFromString(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
|
|
}
|