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123 lines
2.9 KiB
Go
123 lines
2.9 KiB
Go
package httpbinding
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import (
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"encoding/base64"
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"math"
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"math/big"
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"net/http"
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"strconv"
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"strings"
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)
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// Headers is used to encode header keys using a provided prefix
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type Headers struct {
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header http.Header
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prefix string
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}
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// AddHeader returns a HeaderValue used to append values to prefix+key
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func (h Headers) AddHeader(key string) HeaderValue {
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return h.newHeaderValue(key, true)
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}
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// SetHeader returns a HeaderValue used to set the value of prefix+key
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func (h Headers) SetHeader(key string) HeaderValue {
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return h.newHeaderValue(key, false)
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}
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func (h Headers) newHeaderValue(key string, append bool) HeaderValue {
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return newHeaderValue(h.header, h.prefix+strings.TrimSpace(key), append)
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}
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// HeaderValue is used to encode values to an HTTP header
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type HeaderValue struct {
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header http.Header
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key string
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append bool
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}
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func newHeaderValue(header http.Header, key string, append bool) HeaderValue {
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return HeaderValue{header: header, key: strings.TrimSpace(key), append: append}
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}
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func (h HeaderValue) modifyHeader(value string) {
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if h.append {
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h.header[h.key] = append(h.header[h.key], value)
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} else {
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h.header[h.key] = append(h.header[h.key][:0], value)
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}
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}
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// String encodes the value v as the header string value
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func (h HeaderValue) String(v string) {
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h.modifyHeader(v)
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}
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// Byte encodes the value v as a query string value
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func (h HeaderValue) Byte(v int8) {
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h.Long(int64(v))
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}
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// Short encodes the value v as a query string value
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func (h HeaderValue) Short(v int16) {
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h.Long(int64(v))
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}
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// Integer encodes the value v as the header string value
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func (h HeaderValue) Integer(v int32) {
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h.Long(int64(v))
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}
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// Long encodes the value v as the header string value
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func (h HeaderValue) Long(v int64) {
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h.modifyHeader(strconv.FormatInt(v, 10))
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}
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// Boolean encodes the value v as a query string value
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func (h HeaderValue) Boolean(v bool) {
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h.modifyHeader(strconv.FormatBool(v))
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}
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// Float encodes the value v as a query string value
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func (h HeaderValue) Float(v float32) {
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h.float(float64(v), 32)
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}
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// Double encodes the value v as a query string value
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func (h HeaderValue) Double(v float64) {
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h.float(v, 64)
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}
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func (h HeaderValue) float(v float64, bitSize int) {
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switch {
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case math.IsNaN(v):
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h.String(floatNaN)
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case math.IsInf(v, 1):
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h.String(floatInfinity)
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case math.IsInf(v, -1):
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h.String(floatNegInfinity)
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default:
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h.modifyHeader(strconv.FormatFloat(v, 'f', -1, bitSize))
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}
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}
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// BigInteger encodes the value v as a query string value
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func (h HeaderValue) BigInteger(v *big.Int) {
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h.modifyHeader(v.String())
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}
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// BigDecimal encodes the value v as a query string value
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func (h HeaderValue) BigDecimal(v *big.Float) {
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if i, accuracy := v.Int64(); accuracy == big.Exact {
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h.Long(i)
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return
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}
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h.modifyHeader(v.Text('e', -1))
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}
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// Blob encodes the value v as a base64 header string value
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func (h HeaderValue) Blob(v []byte) {
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encodeToString := base64.StdEncoding.EncodeToString(v)
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h.modifyHeader(encodeToString)
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}
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