mirror of
https://github.com/hanzoai/forge.git
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zeekayandHanzo Dev
aa87442fdd
Source files keep their SPDX-License-Identifier and Hanzo copyright line; the Gitea, Gogs and LFS Test Server copyrights they used to repeat now live once in NOTICE, alongside LICENSE. The header lint accepts any copyright line above the SPDX line, so it no longer demands an upstream one. Co-authored-by: Hanzo Dev <[email protected]>
108 lines
2.0 KiB
Go
108 lines
2.0 KiB
Go
// Copyright 2026 Hanzo AI, Inc. All rights reserved.
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// SPDX-License-Identifier: MIT
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//go:build !gogit
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package git
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import (
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"io"
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"github.com/hanzoai/git/modules/log"
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)
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// Blob represents a Git object.
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type Blob struct {
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ID ObjectID
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gotSize bool
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size int64
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name string
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repo *Repository
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}
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// DataAsync gets a ReadCloser for the contents of a blob without reading it all.
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// Calling the Close function on the result will discard all unread output.
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func (b *Blob) DataAsync() (_ io.ReadCloser, retErr error) {
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batch, cancel, err := b.repo.CatFileBatch(b.repo.Ctx)
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if err != nil {
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return nil, err
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}
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defer func() {
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// if there was an error, cancel the batch right away,
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// otherwise let the caller close it
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if retErr != nil {
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cancel()
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}
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}()
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info, contentReader, err := batch.QueryContent(b.ID.String())
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if err != nil {
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return nil, err
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}
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b.gotSize = true
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b.size = info.Size
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return &blobReader{
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rd: contentReader,
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n: info.Size,
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cancel: cancel,
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}, nil
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}
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// Size returns the uncompressed size of the blob
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func (b *Blob) Size() int64 {
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if b.gotSize {
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return b.size
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}
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batch, cancel, err := b.repo.CatFileBatch(b.repo.Ctx)
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if err != nil {
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log.Debug("error whilst reading size for %s in %s. Error: %v", b.ID.String(), b.repo.Path, err)
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return 0
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}
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defer cancel()
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info, err := batch.QueryInfo(b.ID.String())
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if err != nil {
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log.Debug("error whilst reading size for %s in %s. Error: %v", b.ID.String(), b.repo.Path, err)
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return 0
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}
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b.gotSize = true
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b.size = info.Size
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return b.size
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}
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type blobReader struct {
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rd BufferedReader
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n int64
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cancel func()
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}
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func (b *blobReader) Read(p []byte) (n int, err error) {
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if b.n <= 0 {
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return 0, io.EOF
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}
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if int64(len(p)) > b.n {
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p = p[0:b.n]
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}
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n, err = b.rd.Read(p)
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b.n -= int64(n)
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return n, err
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}
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// Close implements io.Closer
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func (b *blobReader) Close() error {
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if b.rd == nil {
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return nil
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}
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defer b.cancel()
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if err := DiscardFull(b.rd, b.n+1); err != nil {
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return err
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}
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b.rd = nil
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return nil
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}
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