shadowdaoandClaude Sonnet 5.5
962d708fdd
Rename root, api and sdk module paths (imports, go.mod, go_package, ldflags, build scripts, buf configs) and regenerate protobuf/gateway code with the project's pinned toolchain. Wire identifiers unchanged. api gets a local replace for sdk; root/api/sdk require v0.1.0. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
// Copyright IBM Corp. 2020, 2026
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// SPDX-License-Identifier: BUSL-1.1
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package bsr
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import (
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"fmt"
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"io"
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"repo.anhonesthost.net/CyberCoveLLC/threshold/internal/bsr/internal/is"
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)
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const (
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// Magic is the magic string / magic number / file signature used to
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// identify a BSR data file.
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//
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// See: https://en.wikipedia.org/wiki/File_format#Magic_number
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Magic magic = magic("\x89BSR\r\n\x1a\n")
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magicSize = len(Magic)
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)
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type magic string
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// Bytes returns the magic as a []byte.
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func (s magic) Bytes() []byte {
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return []byte(s)
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}
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// ReadMagic attempts to read the magic string from the given io.Reader.
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// If it is unable to read enough bytes, or if the magic string does not match
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// an error is returned.
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func ReadMagic(r io.Reader) error {
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const op = "bsr.ReadMagic"
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if is.Nil(r) {
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return fmt.Errorf("%s: reader is nil: %w", op, ErrInvalidParameter)
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}
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m := make([]byte, magicSize)
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_, err := io.ReadAtLeast(r, m, magicSize)
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if err != nil {
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return fmt.Errorf("%s: %w", op, err)
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}
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if len(m) < magicSize || magic(m[:magicSize]) != Magic {
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return fmt.Errorf("%s: %w", op, ErrInvalidMagic)
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}
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return nil
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}
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