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Merge pull request #10028 from Snuffleupagus/entireWord
Add initial support for "Whole words" searching in the viewer
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* Copyright 2018 Mozilla Foundation | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| import { CharacterType, getCharacterType } from '../../web/pdf_find_utils'; | ||
|
|
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| describe('pdf_find_utils', function() { | ||
| describe('getCharacterType', function() { | ||
| it('gets expected character types', function() { | ||
| const characters = { | ||
| 'A': CharacterType.ALPHA_LETTER, | ||
| 'a': CharacterType.ALPHA_LETTER, | ||
| '0': CharacterType.ALPHA_LETTER, | ||
| '5': CharacterType.ALPHA_LETTER, | ||
| '\xC4': CharacterType.ALPHA_LETTER, // 'Ä' | ||
| '\xE4': CharacterType.ALPHA_LETTER, // 'ä' | ||
| '_': CharacterType.ALPHA_LETTER, | ||
| ' ': CharacterType.SPACE, | ||
| '\t': CharacterType.SPACE, | ||
| '\r': CharacterType.SPACE, | ||
| '\n': CharacterType.SPACE, | ||
| '\xA0': CharacterType.SPACE, | ||
| '-': CharacterType.PUNCT, | ||
| ',': CharacterType.PUNCT, | ||
| '.': CharacterType.PUNCT, | ||
| ';': CharacterType.PUNCT, | ||
| ':': CharacterType.PUNCT, | ||
| '\u2122': CharacterType.ALPHA_LETTER, // trademark | ||
| '\u0E25': CharacterType.THAI_LETTER, | ||
| '\u4000': CharacterType.HAN_LETTER, | ||
| '\uF950': CharacterType.HAN_LETTER, | ||
| '\u30C0': CharacterType.KATAKANA_LETTER, | ||
| '\u3050': CharacterType.HIRAGANA_LETTER, | ||
| '\uFF80': CharacterType.HALFWIDTH_KATAKANA_LETTER, | ||
| }; | ||
|
|
||
| for (const character in characters) { | ||
| const charCode = character.charCodeAt(0); | ||
| const type = characters[character]; | ||
|
|
||
| expect(getCharacterType(charCode)).toEqual(type); | ||
| } | ||
| }); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* Copyright 2018 Mozilla Foundation | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| const CharacterType = { | ||
| SPACE: 0, | ||
| ALPHA_LETTER: 1, | ||
| PUNCT: 2, | ||
| HAN_LETTER: 3, | ||
| KATAKANA_LETTER: 4, | ||
| HIRAGANA_LETTER: 5, | ||
| HALFWIDTH_KATAKANA_LETTER: 6, | ||
| THAI_LETTER: 7, | ||
| }; | ||
|
|
||
| function isAlphabeticalScript(charCode) { | ||
| return charCode < 0x2E80; | ||
| } | ||
|
|
||
| function isAscii(charCode) { | ||
| return (charCode & 0xFF80) === 0; | ||
| } | ||
|
|
||
| function isAsciiAlpha(charCode) { | ||
| return (charCode >= /* a = */ 0x61 && charCode <= /* z = */ 0x7A) || | ||
| (charCode >= /* A = */ 0x41 && charCode <= /* Z = */ 0x5A); | ||
| } | ||
|
|
||
| function isAsciiDigit(charCode) { | ||
| return (charCode >= /* 0 = */ 0x30 && charCode <= /* 9 = */ 0x39); | ||
| } | ||
|
|
||
| function isAsciiSpace(charCode) { | ||
| return (charCode === /* SPACE = */ 0x20 || charCode === /* TAB = */ 0x09 || | ||
| charCode === /* CR = */ 0x0D || charCode === /* LF = */ 0x0A); | ||
| } | ||
|
|
||
| function isHan(charCode) { | ||
| return (charCode >= 0x3400 && charCode <= 0x9FFF) || | ||
| (charCode >= 0xF900 && charCode <= 0xFAFF); | ||
| } | ||
|
|
||
| function isKatakana(charCode) { | ||
| return (charCode >= 0x30A0 && charCode <= 0x30FF); | ||
| } | ||
|
|
||
| function isHiragana(charCode) { | ||
| return (charCode >= 0x3040 && charCode <= 0x309F); | ||
| } | ||
|
|
||
| function isHalfwidthKatakana(charCode) { | ||
| return (charCode >= 0xFF60 && charCode <= 0xFF9F); | ||
| } | ||
|
|
||
| function isThai(charCode) { | ||
| return (charCode & 0xFF80) === 0x0E00; | ||
| } | ||
|
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||
| /** | ||
| * This function is based on the word-break detection implemented in: | ||
| * https://hg.mozilla.org/mozilla-central/file/tip/intl/lwbrk/WordBreaker.cpp | ||
| */ | ||
| function getCharacterType(charCode) { | ||
| if (isAlphabeticalScript(charCode)) { | ||
| if (isAscii(charCode)) { | ||
| if (isAsciiSpace(charCode)) { | ||
| return CharacterType.SPACE; | ||
| } else if (isAsciiAlpha(charCode) || isAsciiDigit(charCode) || | ||
| charCode === /* UNDERSCORE = */ 0x5F) { | ||
| return CharacterType.ALPHA_LETTER; | ||
| } | ||
| return CharacterType.PUNCT; | ||
| } else if (isThai(charCode)) { | ||
| return CharacterType.THAI_LETTER; | ||
| } else if (charCode === /* NBSP = */ 0xA0) { | ||
| return CharacterType.SPACE; | ||
| } | ||
| return CharacterType.ALPHA_LETTER; | ||
| } | ||
|
|
||
| if (isHan(charCode)) { | ||
| return CharacterType.HAN_LETTER; | ||
| } else if (isKatakana(charCode)) { | ||
| return CharacterType.KATAKANA_LETTER; | ||
| } else if (isHiragana(charCode)) { | ||
| return CharacterType.HIRAGANA_LETTER; | ||
| } else if (isHalfwidthKatakana(charCode)) { | ||
| return CharacterType.HALFWIDTH_KATAKANA_LETTER; | ||
| } | ||
| return CharacterType.ALPHA_LETTER; | ||
| } | ||
|
|
||
| export { | ||
| CharacterType, | ||
| getCharacterType, | ||
| }; |
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