Function readFileResource

mcp/resource.go:53–69

readFileResource reads from the filesystem at a URI relative to dirFilepath, respecting the roots. dirFilepath and rootFilepaths are absolute filesystem paths.

(rawURI, dirFilepath string, rootFilepaths []string)

// the roots.
// dirFilepath and rootFilepaths are absolute filesystem paths.
func readFileResource(rawURI, dirFilepath string, rootFilepaths []string) ([]byte, error) {
	uriFilepath, err := computeURIFilepath(rawURI, dirFilepath, rootFilepaths)
	if err != nil {
		return nil, err
	}

	var data []byte
	err = withFile(dirFilepath, uriFilepath, func(f *os.File) error {
		var err error
		data, err = io.ReadAll(f)
		return err
	})
	if os.IsNotExist(err) {
		err = ResourceNotFoundError(rawURI)
	}
	return data, err
}

// computeURIFilepath returns a path relative to dirFilepath.
// The dirFilepath and rootFilepaths are absolute file paths.