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34 lines
798 B
34 lines
798 B
package httputil
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import (
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"strings"
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)
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const (
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baseContentType = "application"
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)
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// ContentType returns the content-type with base prefix.
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func ContentType(subtype string) string {
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return strings.Join([]string{baseContentType, subtype}, "/")
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}
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// ContentSubtype returns the content-subtype for the given content-type. The
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// given content-type must be a valid content-type that starts with
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// but no content-subtype will be returned.
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// according rfc7231.
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// contentType is assumed to be lowercase already.
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func ContentSubtype(contentType string) string {
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left := strings.Index(contentType, "/")
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if left == -1 {
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return ""
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}
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right := strings.Index(contentType, ";")
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if right == -1 {
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right = len(contentType)
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}
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if right < left {
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return ""
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}
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return contentType[left+1 : right]
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}
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