forgejo/vendor/github.com/ssor/bom/bom.go
6543 30ce3731a1
Vendor Update Go Libs (#13444)
* denisenkom/go-mssqldb untagged -> v0.9.0

* github.com/editorconfig/editorconfig-core-go v2.3.7 -> v2.3.8

* github.com/go-testfixtures/testfixtures v3.4.0 -> v3.4.1

* github.com/mholt/archiver v3.3.2 -> v3.5.0

* github.com/olivere/elastic v7.0.20 -> v7.0.21

* github.com/urfave/cli v1.22.4 -> v1.22.5

* github.com/xanzy/go-gitlab v0.38.1 -> v0.39.0

* github.com/yuin/goldmark-meta untagged -> v1.0.0

* github.com/ethantkoenig/rupture 0a76f03a811a -> c3b3b810dc77

* github.com/jaytaylor/html2text 8fb95d837f7d -> 3577fbdbcff7

* github.com/kballard/go-shellquote cd60e84ee657 -> 95032a82bc51

* github.com/msteinert/pam 02ccfbfaf0cc -> 913b8f8cdf8b

* github.com/unknwon/paginater 7748a72e0141 -> 042474bd0eae

* CI.restart()

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2020-11-06 13:41:42 -05:00

34 lines
640 B
Go
Vendored

package bom
import (
"bytes"
"io"
"io/ioutil"
)
const (
bom0 = 0xef
bom1 = 0xbb
bom2 = 0xbf
)
// CleanBom returns b with the 3 byte BOM stripped off the front if it is present.
// If the BOM is not present, then b is returned.
func CleanBom(b []byte) []byte {
if len(b) >= 3 &&
b[0] == bom0 &&
b[1] == bom1 &&
b[2] == bom2 {
return b[3:]
}
return b
}
// NewReaderWithoutBom returns an io.Reader that will skip over initial UTF-8 byte order marks.
func NewReaderWithoutBom(r io.Reader) (io.Reader, error) {
bs, err := ioutil.ReadAll(r)
if err != nil {
return nil, err
}
return bytes.NewReader(CleanBom(bs)), nil
}