aboutsummaryrefslogtreecommitdiff
path: root/vendor/github.com/pquerna/ffjson/fflib/v1/fold.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/pquerna/ffjson/fflib/v1/fold.go')
-rw-r--r--vendor/github.com/pquerna/ffjson/fflib/v1/fold.go121
1 files changed, 0 insertions, 121 deletions
diff --git a/vendor/github.com/pquerna/ffjson/fflib/v1/fold.go b/vendor/github.com/pquerna/ffjson/fflib/v1/fold.go
deleted file mode 100644
index 4d33e6f77..000000000
--- a/vendor/github.com/pquerna/ffjson/fflib/v1/fold.go
+++ /dev/null
@@ -1,121 +0,0 @@
-/**
- * Copyright 2014 Paul Querna
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-/* Portions of this file are on Go stdlib's encoding/json/fold.go */
-// Copyright 2009 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.
-
-package v1
-
-import (
- "unicode/utf8"
-)
-
-const (
- caseMask = ^byte(0x20) // Mask to ignore case in ASCII.
- kelvin = '\u212a'
- smallLongEss = '\u017f'
-)
-
-// equalFoldRight is a specialization of bytes.EqualFold when s is
-// known to be all ASCII (including punctuation), but contains an 's',
-// 'S', 'k', or 'K', requiring a Unicode fold on the bytes in t.
-// See comments on foldFunc.
-func EqualFoldRight(s, t []byte) bool {
- for _, sb := range s {
- if len(t) == 0 {
- return false
- }
- tb := t[0]
- if tb < utf8.RuneSelf {
- if sb != tb {
- sbUpper := sb & caseMask
- if 'A' <= sbUpper && sbUpper <= 'Z' {
- if sbUpper != tb&caseMask {
- return false
- }
- } else {
- return false
- }
- }
- t = t[1:]
- continue
- }
- // sb is ASCII and t is not. t must be either kelvin
- // sign or long s; sb must be s, S, k, or K.
- tr, size := utf8.DecodeRune(t)
- switch sb {
- case 's', 'S':
- if tr != smallLongEss {
- return false
- }
- case 'k', 'K':
- if tr != kelvin {
- return false
- }
- default:
- return false
- }
- t = t[size:]
-
- }
- if len(t) > 0 {
- return false
- }
- return true
-}
-
-// asciiEqualFold is a specialization of bytes.EqualFold for use when
-// s is all ASCII (but may contain non-letters) and contains no
-// special-folding letters.
-// See comments on foldFunc.
-func AsciiEqualFold(s, t []byte) bool {
- if len(s) != len(t) {
- return false
- }
- for i, sb := range s {
- tb := t[i]
- if sb == tb {
- continue
- }
- if ('a' <= sb && sb <= 'z') || ('A' <= sb && sb <= 'Z') {
- if sb&caseMask != tb&caseMask {
- return false
- }
- } else {
- return false
- }
- }
- return true
-}
-
-// simpleLetterEqualFold is a specialization of bytes.EqualFold for
-// use when s is all ASCII letters (no underscores, etc) and also
-// doesn't contain 'k', 'K', 's', or 'S'.
-// See comments on foldFunc.
-func SimpleLetterEqualFold(s, t []byte) bool {
- if len(s) != len(t) {
- return false
- }
- for i, b := range s {
- if b&caseMask != t[i]&caseMask {
- return false
- }
- }
- return true
-}