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fs: fix FixRangeOption so it works with 0 length files

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This commit is contained in:
Nick Craig-Wood 2019-08-03 17:44:44 +01:00
parent 629b7eacd8
commit 95af1f9ccf
1 changed files with 12 additions and 1 deletions
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13
fs/options.go
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@ -139,6 +139,17 @@ func (o *RangeOption) Decode(size int64) (offset, limit int64) {
// not exceed filesize. Some remotes (eg Onedrive, Box) don't support
// range requests which index from the end.
func FixRangeOption(options []OpenOption, size int64) {
if size == 0 {
// if size 0 then remove RangeOption~s
// replacing with an empty HTTPOption~s which won't be rendered
for i := range options {
if _, ok := options[i].(*RangeOption); ok {
options[i] = &HTTPOption{}
}
}
return
}
for i := range options {
option := options[i]
if x, ok := option.(*RangeOption); ok {
@ -148,7 +159,7 @@ func FixRangeOption(options []OpenOption, size int64) {
options[i] = x
}
if x.End > size {
x = &RangeOption{Start: x.Start, End: size}
x = &RangeOption{Start: x.Start, End: size - 1}
options[i] = x
}
}