Ethan Koenig
6 years ago
committed by
Lauris BH
5 changed files with 108 additions and 126 deletions
@ -0,0 +1,81 @@ |
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// Copyright 2018 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package git |
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import ( |
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"bytes" |
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"fmt" |
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"strconv" |
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) |
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// ParseTreeEntries parses the output of a `git ls-tree` command.
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func ParseTreeEntries(data []byte) ([]*TreeEntry, error) { |
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return parseTreeEntries(data, nil) |
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} |
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func parseTreeEntries(data []byte, ptree *Tree) ([]*TreeEntry, error) { |
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entries := make([]*TreeEntry, 0, 10) |
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for pos := 0; pos < len(data); { |
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// expect line to be of the form "<mode> <type> <sha>\t<filename>"
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entry := new(TreeEntry) |
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entry.ptree = ptree |
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if pos+6 > len(data) { |
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return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data)) |
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} |
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switch string(data[pos : pos+6]) { |
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case "100644": |
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entry.mode = EntryModeBlob |
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entry.Type = ObjectBlob |
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pos += 12 // skip over "100644 blob "
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case "100755": |
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entry.mode = EntryModeExec |
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entry.Type = ObjectBlob |
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pos += 12 // skip over "100755 blob "
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case "120000": |
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entry.mode = EntryModeSymlink |
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entry.Type = ObjectBlob |
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pos += 12 // skip over "120000 blob "
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case "160000": |
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entry.mode = EntryModeCommit |
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entry.Type = ObjectCommit |
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pos += 14 // skip over "160000 object "
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case "040000": |
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entry.mode = EntryModeTree |
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entry.Type = ObjectTree |
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pos += 12 // skip over "040000 tree "
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default: |
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return nil, fmt.Errorf("unknown type: %v", string(data[pos:pos+6])) |
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} |
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if pos+40 > len(data) { |
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return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data)) |
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} |
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id, err := NewIDFromString(string(data[pos : pos+40])) |
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if err != nil { |
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return nil, fmt.Errorf("Invalid ls-tree output: %v", err) |
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} |
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entry.ID = id |
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pos += 41 // skip over sha and trailing space
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end := pos + bytes.IndexByte(data[pos:], '\n') |
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if end < pos { |
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return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data)) |
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} |
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// In case entry name is surrounded by double quotes(it happens only in git-shell).
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if data[pos] == '"' { |
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entry.name, err = strconv.Unquote(string(data[pos:end])) |
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if err != nil { |
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return nil, fmt.Errorf("Invalid ls-tree output: %v", err) |
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} |
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} else { |
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entry.name = string(data[pos:end]) |
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} |
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pos = end + 1 |
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entries = append(entries, entry) |
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} |
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return entries, nil |
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} |
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