transform

package
Version: v0.88.1 Latest Latest
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Published: Sep 4, 2021 License: Apache-2.0 Imports: 3 Imported by: 59

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Types

type BytesReader added in v0.47.1

type BytesReader interface {
	// The slice given by Bytes is valid for use only until the next buffer modification.
	// That is, if you want to use this value outside of the current transformer step,
	// you need to take a copy.
	Bytes() []byte

	io.Reader
}

BytesReader wraps the Bytes method, usually implemented by bytes.Buffer, and an io.Reader.

type Chain added in v0.47.1

type Chain []Transformer

Chain is an ordered processing chain. The next transform operation will receive the output from the previous.

func New added in v0.47.1

func New(trs ...Transformer) Chain

New creates a content transformer chain given the provided transform funcs.

func NewEmpty added in v0.47.1

func NewEmpty() Chain

NewEmpty creates a new slice of transformers with a capacity of 20.

func (*Chain) Apply added in v0.47.1

func (c *Chain) Apply(to io.Writer, from io.Reader) error

Apply passes the given from io.Reader through the transformation chain. The result is written to to.

type FromTo added in v0.47.1

type FromTo interface {
	From() BytesReader
	To() io.Writer
}

FromTo is sent to each transformation step in the chain.

type Transformer added in v0.47.1

type Transformer func(ft FromTo) error

Transformer is the func that needs to be implemented by a transformation step.

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