Sha256: 2f5a4cbb803388350507c39423c9cb1d287a2b1f91338c44fea708c2c9a8a96c
Contents?: true
Size: 1.3 KB
Versions: 16
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Stored size: 1.3 KB
Contents
//go:build go1.18
// +build go1.18
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
package azcore
import (
"strings"
)
// ETag is a property used for optimistic concurrency during updates
// ETag is a validator based on https://tools.ietf.org/html/rfc7232#section-2.3.2
// An ETag can be empty ("").
type ETag string
// ETagAny is an ETag that represents everything, the value is "*"
const ETagAny ETag = "*"
// Equals does a strong comparison of two ETags. Equals returns true when both
// ETags are not weak and the values of the underlying strings are equal.
func (e ETag) Equals(other ETag) bool {
return !e.IsWeak() && !other.IsWeak() && e == other
}
// WeakEquals does a weak comparison of two ETags. Two ETags are equivalent if their opaque-tags match
// character-by-character, regardless of either or both being tagged as "weak".
func (e ETag) WeakEquals(other ETag) bool {
getStart := func(e1 ETag) int {
if e1.IsWeak() {
return 2
}
return 0
}
aStart := getStart(e)
bStart := getStart(other)
aVal := e[aStart:]
bVal := other[bStart:]
return aVal == bVal
}
// IsWeak specifies whether the ETag is strong or weak.
func (e ETag) IsWeak() bool {
return len(e) >= 4 && strings.HasPrefix(string(e), "W/\"") && strings.HasSuffix(string(e), "\"")
}
Version data entries
16 entries across 16 versions & 1 rubygems