diff options
Diffstat (limited to 'vendor/github.com/tinylib/msgp/msgp/read_bytes.go')
| -rw-r--r-- | vendor/github.com/tinylib/msgp/msgp/read_bytes.go | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/vendor/github.com/tinylib/msgp/msgp/read_bytes.go b/vendor/github.com/tinylib/msgp/msgp/read_bytes.go index e4199757..f6674507 100644 --- a/vendor/github.com/tinylib/msgp/msgp/read_bytes.go +++ b/vendor/github.com/tinylib/msgp/msgp/read_bytes.go @@ -253,6 +253,46 @@ func ReadArrayHeaderBytes(b []byte) (sz uint32, o []byte, err error) { } } +// ReadBytesHeader reads the 'bin' header size +// off of 'b' and returns the size and remaining bytes. +// Possible errors: +// - ErrShortBytes (too few bytes) +// - TypeError{} (not a bin object) +func ReadBytesHeader(b []byte) (sz uint32, o []byte, err error) { + if len(b) < 1 { + return 0, nil, ErrShortBytes + } + switch b[0] { + case mbin8: + if len(b) < 2 { + err = ErrShortBytes + return + } + sz = uint32(b[1]) + o = b[2:] + return + case mbin16: + if len(b) < 3 { + err = ErrShortBytes + return + } + sz = uint32(big.Uint16(b[1:])) + o = b[3:] + return + case mbin32: + if len(b) < 5 { + err = ErrShortBytes + return + } + sz = big.Uint32(b[1:]) + o = b[5:] + return + default: + err = badPrefix(BinType, b[0]) + return + } +} + // ReadNilBytes tries to read a "nil" byte // off of 'b' and return the remaining bytes. // Possible errors: |