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e34daae0cf
* Refactor: move cncd/pipeline/ to pipeline/ * Refactor: move pipeline/pipeline/ to pipeline/
104 lines
2.0 KiB
Go
104 lines
2.0 KiB
Go
package multipart
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import (
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"bufio"
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"bytes"
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"io"
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"mime/multipart"
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"net/textproto"
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)
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type (
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// Reader is an iterator over parts in a multipart log stream.
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Reader interface {
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// NextPart returns the next part in the multipart or
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// an error. When there are no more parts, the error
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// io.EOF is returned.
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NextPart() (Part, error)
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}
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// A Part represents a single part in a multipart body.
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Part interface {
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io.Reader
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// Header returns the headers of the body with the
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// keys canonicalized.
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Header() textproto.MIMEHeader
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// FileName returns the filename parameter of the
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// Content-Disposition header.
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FileName() string
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// FormName returns the name parameter if p has a
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// Content-Disposition of type form-data.
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FormName() string
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}
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)
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// New returns a new multipart Reader.
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func New(r io.Reader) Reader {
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buf := bufio.NewReader(r)
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out, _ := buf.Peek(8)
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if bytes.Equal(out, []byte("PIPELINE")) {
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return &multipartReader{
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reader: multipart.NewReader(buf, "boundary"),
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}
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}
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return &textReader{
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reader: buf,
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}
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}
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//
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// wraps the stdlib multi-part reader
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//
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type multipartReader struct {
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reader *multipart.Reader
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}
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func (r *multipartReader) NextPart() (Part, error) {
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next, err := r.reader.NextPart()
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if err != nil {
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return nil, err
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}
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part := new(part)
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part.Reader = next
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part.filename = next.FileName()
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part.formname = next.FormName()
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part.header = next.Header
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return part, nil
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}
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//
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// wraps a simple io.Reader to satisfy the multi-part interface
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//
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type textReader struct {
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reader io.Reader
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done bool
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}
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func (r *textReader) NextPart() (Part, error) {
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if r.done {
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return nil, io.EOF
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}
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r.done = true
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p := new(part)
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p.Reader = r.reader
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return p, nil
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}
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type part struct {
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io.Reader
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filename string
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formname string
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header textproto.MIMEHeader
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}
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func (p *part) Header() textproto.MIMEHeader { return p.header }
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func (p *part) FileName() string { return p.filename }
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func (p *part) FormName() string { return p.filename }
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