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icuregex: Update to ICU 73 (vitessio#13912)
Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| © 2016 and later: Unicode, Inc. and others. | ||
| Copyright (C) 2004-2015, International Business Machines Corporation and others. | ||
| Copyright 2023 The Vitess Authors. | ||
| This file contains code derived from the Unicode Project's ICU library. | ||
| License & terms of use for the original code: http://www.unicode.org/copyright.html | ||
| 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. | ||
| */ | ||
|
|
||
| package uemoji | ||
|
|
||
| import ( | ||
| "sync" | ||
|
|
||
| "vitess.io/vitess/go/mysql/icuregex/internal/icudata" | ||
| "vitess.io/vitess/go/mysql/icuregex/internal/udata" | ||
| "vitess.io/vitess/go/mysql/icuregex/internal/utrie" | ||
| ) | ||
|
|
||
| var uemojiOnce sync.Once | ||
| var uemoji struct { | ||
| trie *utrie.UcpTrie | ||
| } | ||
|
|
||
| func loadUEmoji() { | ||
| uemojiOnce.Do(func() { | ||
| b := udata.NewBytes(icudata.UEmoji) | ||
| if err := readData(b); err != nil { | ||
| panic(err) | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| func trie() *utrie.UcpTrie { | ||
| loadUEmoji() | ||
| return uemoji.trie | ||
| } | ||
|
|
||
| func readData(bytes *udata.Bytes) error { | ||
| err := bytes.ReadHeader(func(info *udata.DataInfo) bool { | ||
| return info.DataFormat[0] == 0x45 && | ||
| info.DataFormat[1] == 0x6d && | ||
| info.DataFormat[2] == 0x6f && | ||
| info.DataFormat[3] == 0x6a && | ||
| info.FormatVersion[0] == 1 | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| bytes.Skip(bytes.Int32() - 4) | ||
| uemoji.trie, err = utrie.UcpTrieFromBytes(bytes) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| /* | ||
| © 2016 and later: Unicode, Inc. and others. | ||
| Copyright (C) 2004-2015, International Business Machines Corporation and others. | ||
| Copyright 2023 The Vitess Authors. | ||
| This file contains code derived from the Unicode Project's ICU library. | ||
| License & terms of use for the original code: http://www.unicode.org/copyright.html | ||
| 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. | ||
| */ | ||
|
|
||
| package uemoji | ||
|
|
||
| import ( | ||
| "vitess.io/vitess/go/mysql/icuregex/internal/utrie" | ||
| ) | ||
|
|
||
| type propertySet interface { | ||
| AddRune(ch rune) | ||
| AddRuneRange(from rune, to rune) | ||
| } | ||
|
|
||
| func AddPropertyStarts(sa propertySet) { | ||
| // Add the start code point of each same-value range of the trie. | ||
| var start, end rune | ||
| for { | ||
| end, _ = trie().GetRange(start, utrie.UcpMapRangeNormal, 0, nil) | ||
| if end < 0 { | ||
| break | ||
| } | ||
| sa.AddRune(start) | ||
| start = end + 1 | ||
| } | ||
| } | ||
|
|
||
| const ( | ||
| bitEmoji = 0 | ||
| bitEmojiPresentation = 1 | ||
| bitEmojiModifier = 2 | ||
| bitEmojiModifierBase = 3 | ||
| bitEmojiComponent = 4 | ||
| bitExtendedPictographic = 5 | ||
| bitBasicEmoji = 6 | ||
| ) | ||
|
|
||
| // Note: REGIONAL_INDICATOR is a single, hardcoded range implemented elsewhere. | ||
| var bitFlags = []int8{ | ||
| bitEmoji, | ||
| bitEmojiPresentation, | ||
| bitEmojiModifier, | ||
| bitEmojiModifierBase, | ||
| bitEmojiComponent, | ||
| -1, | ||
| -1, | ||
| bitExtendedPictographic, | ||
| bitBasicEmoji, | ||
| -1, | ||
| -1, | ||
| -1, | ||
| -1, | ||
| -1, | ||
| bitBasicEmoji, | ||
| } | ||
|
|
||
| func HasBinaryProperty(c rune, which int) bool { | ||
| bit := bitFlags[which] | ||
| if bit < 0 { | ||
| return false // not a property that we support in this function | ||
| } | ||
| bits := trie().Get(c) | ||
| return ((bits >> bit) & 1) != 0 | ||
| } |
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