52 lines
993 B
Go
52 lines
993 B
Go
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// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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// Package useragent implements parts of https://tools.ietf.org/html/rfc7231#section-5.5.3 and
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// https://tools.ietf.org/html/rfc2616#section-14.43
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package useragent
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import (
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"strings"
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"github.com/zeebo/errs"
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)
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// Error is the default error class.
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var Error = errs.Class("useragent")
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// Info contains parsed user agent.
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type Info struct {
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Product Product
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Full string
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}
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// Product is an user agent product.
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type Product struct {
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Name string
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Version string
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}
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// Parse parses user agent string to information.
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func Parse(s string) (Info, error) {
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if s == "" {
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return Info{}, nil
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}
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s = strings.TrimSpace(s)
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info := Info{}
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info.Full = s
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parts := strings.SplitN(s, " ", 2)
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productTokens := strings.SplitN(parts[0], "/", 2)
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if len(productTokens) >= 1 {
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info.Product.Name = productTokens[0]
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}
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if len(productTokens) >= 2 {
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info.Product.Version = productTokens[1]
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}
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return info, nil
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}
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