4eb2a29910
The 4 functions are duplicated, especially as interface methods. I think we just need to keep `MustID` the only one and remove other 3. ``` MustID(b []byte) ObjectID MustIDFromString(s string) ObjectID NewID(b []byte) (ObjectID, error) NewIDFromString(s string) (ObjectID, error) ``` Introduced the new interfrace method `ComputeHash` which will replace the interface `HasherInterface`. Now we don't need to keep two interfaces. Reintroduced `git.NewIDFromString` and `git.MustIDFromString`. The new function will detect the hash length to decide which objectformat of it. If it's 40, then it's SHA1. If it's 64, then it's SHA256. This will be right if the commitID is a full one. So the parameter should be always a full commit id. @AdamMajer Please review.
107 lines
2.4 KiB
Go
107 lines
2.4 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package git
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import (
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"bufio"
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"bytes"
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"io"
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"strings"
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)
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// CommitFromReader will generate a Commit from a provided reader
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// We need this to interpret commits from cat-file or cat-file --batch
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//
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// If used as part of a cat-file --batch stream you need to limit the reader to the correct size
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func CommitFromReader(gitRepo *Repository, objectID ObjectID, reader io.Reader) (*Commit, error) {
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commit := &Commit{
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ID: objectID,
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Author: &Signature{},
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Committer: &Signature{},
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}
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payloadSB := new(strings.Builder)
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signatureSB := new(strings.Builder)
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messageSB := new(strings.Builder)
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message := false
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pgpsig := false
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bufReader, ok := reader.(*bufio.Reader)
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if !ok {
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bufReader = bufio.NewReader(reader)
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}
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readLoop:
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for {
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line, err := bufReader.ReadBytes('\n')
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if err != nil {
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if err == io.EOF {
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if message {
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_, _ = messageSB.Write(line)
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}
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_, _ = payloadSB.Write(line)
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break readLoop
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}
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return nil, err
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}
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if pgpsig {
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if len(line) > 0 && line[0] == ' ' {
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_, _ = signatureSB.Write(line[1:])
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continue
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} else {
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pgpsig = false
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}
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}
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if !message {
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// This is probably not correct but is copied from go-gits interpretation...
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trimmed := bytes.TrimSpace(line)
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if len(trimmed) == 0 {
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message = true
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_, _ = payloadSB.Write(line)
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continue
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}
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split := bytes.SplitN(trimmed, []byte{' '}, 2)
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var data []byte
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if len(split) > 1 {
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data = split[1]
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}
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switch string(split[0]) {
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case "tree":
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commit.Tree = *NewTree(gitRepo, MustIDFromString(string(data)))
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_, _ = payloadSB.Write(line)
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case "parent":
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commit.Parents = append(commit.Parents, MustIDFromString(string(data)))
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_, _ = payloadSB.Write(line)
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case "author":
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commit.Author = &Signature{}
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commit.Author.Decode(data)
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_, _ = payloadSB.Write(line)
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case "committer":
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commit.Committer = &Signature{}
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commit.Committer.Decode(data)
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_, _ = payloadSB.Write(line)
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case "gpgsig":
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_, _ = signatureSB.Write(data)
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_ = signatureSB.WriteByte('\n')
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pgpsig = true
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}
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} else {
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_, _ = messageSB.Write(line)
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_, _ = payloadSB.Write(line)
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}
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}
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commit.CommitMessage = messageSB.String()
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commit.Signature = &CommitGPGSignature{
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Signature: signatureSB.String(),
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Payload: payloadSB.String(),
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}
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if len(commit.Signature.Signature) == 0 {
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commit.Signature = nil
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}
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return commit, nil
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}
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