95 lines
2.1 KiB
Go
95 lines
2.1 KiB
Go
package ipp
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import (
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"bytes"
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"encoding/binary"
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"io"
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)
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type Request struct {
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Operation Operation
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RequestID int
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OperationAttributes map[string]interface{}
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JobAttributes map[string]interface{}
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PrinterAttributes map[string]interface{}
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File io.Reader
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FileSize int
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}
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func NewRequest(op Operation, reqID int) *Request {
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return &Request{
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op, reqID, make(map[string]interface{}), make(map[string]interface{}), make(map[string]interface{}), nil, -1,
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}
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}
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func (r *Request) Encode() ([]byte, error) {
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buf := new(bytes.Buffer)
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enc := NewAttributeEncoder(buf)
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if err := binary.Write(buf, binary.BigEndian, ProtocolVersionMajor); err != nil {
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return nil, err
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}
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if err := binary.Write(buf, binary.BigEndian, ProtocolVersionMinor); err != nil {
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return nil, err
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}
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if err := binary.Write(buf, binary.BigEndian, r.Operation); err != nil {
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return nil, err
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}
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if err := binary.Write(buf, binary.BigEndian, int32(r.RequestID)); err != nil {
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return nil, err
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}
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if err := binary.Write(buf, binary.BigEndian, int8(TagOperation)); err != nil {
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return nil, err
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}
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if err := enc.Encode("attributes-charset", Charset); err != nil {
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return nil, err
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}
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if err := enc.Encode("attributes-natural-language", CharsetLanguage); err != nil {
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return nil, err
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}
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if len(r.OperationAttributes) > 0 {
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for attr, value := range r.OperationAttributes {
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if err := enc.Encode(attr, value); err != nil {
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return nil, err
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}
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}
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}
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if len(r.JobAttributes) > 0 {
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if err := binary.Write(buf, binary.BigEndian, int8(TagJob)); err != nil {
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return nil, err
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}
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for attr, value := range r.JobAttributes {
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if err := enc.Encode(attr, value); err != nil {
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return nil, err
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}
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}
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}
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if len(r.PrinterAttributes) > 0 {
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if err := binary.Write(buf, binary.BigEndian, int8(TagPrinter)); err != nil {
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return nil, err
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}
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for attr, value := range r.PrinterAttributes {
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if err := enc.Encode(attr, value); err != nil {
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return nil, err
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}
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}
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}
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if err := binary.Write(buf, binary.BigEndian, int8(TagEnd)); err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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