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fs: Make RangeOption mandatory #1825

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This commit is contained in:
Nick Craig-Wood 2018-02-19 15:49:39 +00:00
parent 9ffc3898b1
commit ab0d06eb16
1 changed files with 14 additions and 1 deletions
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15
fs/options.go
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@ -32,6 +32,19 @@ type OpenOption interface {
// Note that the End is inclusive, so to fetch 100 bytes you would use
// RangeOption{Start: 0, End: 99}
//
// If Start is specified but End is not then it will fetch from Start
// to the end of the file.
//
// If End is specified, but Start is not then it will fetch the last
// End bytes.
//
// Examples:
//
// RangeOption{Start: 0, End: 99} - fetch the first 100 bytes
// RangeOption{Start: 100, End: 199} - fetch the second 100 bytes
// RangeOption{Start: 100} - fetch bytes from offset 100 to the end
// RangeOption{End: 100} - fetch the last 100 bytes
//
// A RangeOption implements a single byte-range-spec from
// https://tools.ietf.org/html/rfc7233#section-2.1
type RangeOption struct {
@ -93,7 +106,7 @@ func (o *RangeOption) String() string {
// Mandatory returns whether the option must be parsed or can be ignored
func (o *RangeOption) Mandatory() bool {
return false
return true
}
// Decode interprets the RangeOption into an offset and a limit