vendor: delete

1 files changed, 0 insertions, 83 deletions

diff --git a/vendor/github.com/google/safehtml/identifier.go b/vendor/github.com/google/safehtml/identifier.go
deleted file mode 100644
index ffad26423..000000000
--- a/vendor/github.com/google/safehtml/identifier.go
+++ /dev/null
@@ -1,83 +0,0 @@
-// Copyright (c) 2017 The Go Authors. All rights reserved.
-//
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file or at
-// https://developers.google.com/open-source/licenses/bsd
-
-package safehtml
-
-import (
-	"fmt"
-	"regexp"
-)
-
-// A Identifier is an immutable string-like type that is safe to use in HTML
-// contexts as an identifier for HTML elements. For example, it is unsafe to
-// insert an untrusted string into a
-//
-//   <img name="..."></img>
-//
-// context since the string may be controlled by an attacker who can assign it
-// a value that masks existing DOM properties (i.e. DOM Clobbering). An
-// attacker may also be able to force legitimate Javascript code, which uses
-// document.getElementsByName(...) to read DOM elements, to refer to this
-// element. This may lead to unintended side effects, particularly if that
-// element contains attacker-controlled data. It is, however, safe to use an
-// Identifier in this context since its value is known to be partially or fully
-// under application control.
-//
-// In order to ensure that an attacker cannot influence the Identifier value,
-// an Identifier can only be instantiated from a compile-time constant string
-// literal prefix.
-//
-// Note that Identifier is Go-specific and therefore does not have a Proto form
-// for cross-language use.
-type Identifier struct {
-	// We declare a Identifier not as a string but as a struct wrapping a string
-	// to prevent construction of Identifier values through string conversion.
-	str string
-}
-
-// To minimize the risk of parsing errors, Identifier values must start with an
-// alphabetical rune, and comprise of only alphanumeric, '-', and '_' runes.
-
-// startsWithAlphabetPattern matches strings that start with an alphabetical rune.
-var startsWithAlphabetPattern = regexp.MustCompile(`^[a-zA-Z]`)
-
-// onlyAlphanumericsOrHyphenPattern matches strings that only contain alphanumeric,
-// '-' and '_' runes.
-var onlyAlphanumericsOrHyphenPattern = regexp.MustCompile(`^[-_a-zA-Z0-9]*$`)
-
-// IdentifierFromConstant constructs an Identifier with its underlying identifier
-// set to the given string value, which must be an untyped string constant. It
-// panics if value does not start with an alphabetic rune or contains any
-// non-alphanumeric runes other than '-' and '_'.
-func IdentifierFromConstant(value stringConstant) Identifier {
-	if !startsWithAlphabetPattern.MatchString(string(value)) ||
-		!onlyAlphanumericsOrHyphenPattern.MatchString(string(value)) {
-		panic(fmt.Sprintf("invalid identifier %q", string(value)))
-	}
-	return Identifier{string(value)}
-}
-
-// IdentifierFromConstantPrefix constructs an Identifier with its underlying string
-// set to the string formed by joining prefix, which must be an untyped string
-// constant, and value with a hyphen. It panics if prefix or value contain any
-// non-alphanumeric runes other than '-' and '_', or if prefix does not start with
-// an alphabetic rune.
-func IdentifierFromConstantPrefix(prefix stringConstant, value string) Identifier {
-	prefixString := string(prefix)
-	if !startsWithAlphabetPattern.MatchString(string(prefix)) ||
-		!onlyAlphanumericsOrHyphenPattern.MatchString(string(prefix)) {
-		panic(fmt.Sprintf("invalid prefix %q", string(prefix)))
-	}
-	if !onlyAlphanumericsOrHyphenPattern.MatchString(value) {
-		panic(fmt.Sprintf("value %q contains non-alphanumeric runes", value))
-	}
-	return Identifier{prefixString + "-" + value}
-}
-
-// String returns the string form of the Identifier.
-func (i Identifier) String() string {
-	return i.str
-}