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- // Copyright 2018 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.
-
- //go:build !gogit
-
- package git
-
- import (
- "bufio"
- "bytes"
- "fmt"
- "io"
- "strconv"
- "strings"
-
- "code.gitea.io/gitea/modules/log"
- )
-
- // 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.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.entryMode = EntryModeBlob
- pos += 12 // skip over "100644 blob "
- case "100755":
- entry.entryMode = EntryModeExec
- pos += 12 // skip over "100755 blob "
- case "120000":
- entry.entryMode = EntryModeSymlink
- pos += 12 // skip over "120000 blob "
- case "160000":
- entry.entryMode = EntryModeCommit
- pos += 14 // skip over "160000 object "
- case "040000":
- entry.entryMode = EntryModeTree
- pos += 12 // skip over "040000 tree "
- default:
- return nil, fmt.Errorf("unknown type: %v", string(data[pos:pos+6]))
- }
-
- if pos+40 > len(data) {
- return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
- }
- id, err := NewIDFromString(string(data[pos : pos+40]))
- if err != nil {
- return nil, fmt.Errorf("Invalid ls-tree output: %v", err)
- }
- entry.ID = id
- 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] == '"' {
- entry.name, err = strconv.Unquote(string(data[pos:end]))
- if err != nil {
- return nil, fmt.Errorf("Invalid ls-tree output: %v", err)
- }
- } else {
- entry.name = string(data[pos:end])
- }
-
- pos = end + 1
- entries = append(entries, entry)
- }
- return entries, nil
- }
-
- func catBatchParseTreeEntries(ptree *Tree, rd *bufio.Reader, sz int64) ([]*TreeEntry, error) {
- fnameBuf := make([]byte, 4096)
- modeBuf := make([]byte, 40)
- shaBuf := make([]byte, 40)
- entries := make([]*TreeEntry, 0, 10)
-
- loop:
- for sz > 0 {
- mode, fname, sha, count, err := ParseTreeLine(rd, modeBuf, fnameBuf, shaBuf)
- if err != nil {
- if err == io.EOF {
- break loop
- }
- return nil, err
- }
- sz -= int64(count)
- entry := new(TreeEntry)
- entry.ptree = ptree
-
- switch string(mode) {
- case "100644":
- entry.entryMode = EntryModeBlob
- case "100755":
- entry.entryMode = EntryModeExec
- case "120000":
- entry.entryMode = EntryModeSymlink
- case "160000":
- entry.entryMode = EntryModeCommit
- case "40000":
- entry.entryMode = EntryModeTree
- default:
- log.Debug("Unknown mode: %v", string(mode))
- return nil, fmt.Errorf("unknown mode: %v", string(mode))
- }
-
- entry.ID = MustID(sha)
- entry.name = string(fname)
- entries = append(entries, entry)
- }
- if _, err := rd.Discard(1); err != nil {
- return entries, err
- }
-
- return entries, nil
- }
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