forked from ipfs/kubo
/
block.go
81 lines (68 loc) · 1.76 KB
/
block.go
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package options
import (
"gx/ipfs/QmPnFwZ2JXKnXgMw8CdBPxn7FWh6LLdjUjxV1fKHuJnkr8/go-multihash"
)
type BlockPutSettings struct {
Codec string
MhType uint64
MhLength int
}
type BlockRmSettings struct {
Force bool
}
type BlockPutOption func(*BlockPutSettings) error
type BlockRmOption func(*BlockRmSettings) error
func BlockPutOptions(opts ...BlockPutOption) (*BlockPutSettings, error) {
options := &BlockPutSettings{
Codec: "v0",
MhType: multihash.SHA2_256,
MhLength: -1,
}
for _, opt := range opts {
err := opt(options)
if err != nil {
return nil, err
}
}
return options, nil
}
func BlockRmOptions(opts ...BlockRmOption) (*BlockRmSettings, error) {
options := &BlockRmSettings{
Force: false,
}
for _, opt := range opts {
err := opt(options)
if err != nil {
return nil, err
}
}
return options, nil
}
type blockOpts struct{}
var Block blockOpts
// Format is an option for Block.Put which specifies the multicodec to use to
// serialize the object. Default is "v0"
func (blockOpts) Format(codec string) BlockPutOption {
return func(settings *BlockPutSettings) error {
settings.Codec = codec
return nil
}
}
// Hash is an option for Block.Put which specifies the multihash settings to use
// when hashing the object. Default is mh.SHA2_256 (0x12).
// If mhLen is set to -1, default length for the hash will be used
func (blockOpts) Hash(mhType uint64, mhLen int) BlockPutOption {
return func(settings *BlockPutSettings) error {
settings.MhType = mhType
settings.MhLength = mhLen
return nil
}
}
// Force is an option for Block.Rm which, when set to true, will ignore
// non-existing blocks
func (blockOpts) Force(force bool) BlockRmOption {
return func(settings *BlockRmSettings) error {
settings.Force = force
return nil
}
}