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package fetch
import (
"fmt"
"io"
"codeberg.org/lindenii/furgit/object/tree"
)
// ReadFile reads the blob contents at name.
//
// Directories and gitlink entries are not readable through TreeFS.
func (treeFS *TreeFS) ReadFile(name string) ([]byte, error) {
entry, err := treeFS.resolvePath(treeFSOpReadFile, name)
if err != nil {
return nil, err
}
if entry.isDir() {
return nil, treeFSPathError(treeFSOpReadFile, name, fmt.Errorf("is a directory"))
}
if entry.mode == tree.FileModeGitlink {
return nil, treeFSPathError(treeFSOpReadFile, name, fmt.Errorf("object/fetch: gitlink entries are not readable as files"))
}
reader, _, err := treeFS.resolver.ExactBlobReader(entry.objectID)
if err != nil {
return nil, treeFSPathError(treeFSOpReadFile, name, err)
}
defer func() { _ = reader.Close() }()
data, err := io.ReadAll(reader)
if err != nil {
return nil, treeFSPathError(treeFSOpReadFile, name, err)
}
return data, nil
}
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