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-rw-r--r--ext/bg/background.html1
-rw-r--r--ext/bg/js/japanese.js31
-rw-r--r--ext/bg/js/text-source-map.js115
-rw-r--r--ext/bg/js/translator.js30
4 files changed, 133 insertions, 44 deletions
diff --git a/ext/bg/background.html b/ext/bg/background.html
index f7cf6e55..e456717e 100644
--- a/ext/bg/background.html
+++ b/ext/bg/background.html
@@ -38,6 +38,7 @@
<script src="/bg/js/options.js"></script>
<script src="/bg/js/profile-conditions.js"></script>
<script src="/bg/js/request.js"></script>
+ <script src="/bg/js/text-source-map.js"></script>
<script src="/bg/js/translator.js"></script>
<script src="/bg/js/util.js"></script>
<script src="/mixed/js/audio-system.js"></script>
diff --git a/ext/bg/js/japanese.js b/ext/bg/js/japanese.js
index c5873cf1..2a2b39fd 100644
--- a/ext/bg/js/japanese.js
+++ b/ext/bg/js/japanese.js
@@ -158,9 +158,8 @@
return result;
}
- function convertHalfWidthKanaToFullWidth(text, sourceMapping) {
+ function convertHalfWidthKanaToFullWidth(text, sourceMap=null) {
let result = '';
- const hasSourceMapping = Array.isArray(sourceMapping);
// This function is safe to use charCodeAt instead of codePointAt, since all
// the relevant characters are represented with a single UTF-16 character code.
@@ -192,10 +191,8 @@
}
}
- if (hasSourceMapping && index > 0) {
- index = result.length;
- const v = sourceMapping.splice(index + 1, 1)[0];
- sourceMapping[index] += v;
+ if (sourceMap !== null && index > 0) {
+ sourceMap.combine(result.length, 1);
}
result += c2;
}
@@ -203,7 +200,7 @@
return result;
}
- function convertAlphabeticToKana(text, sourceMapping) {
+ function convertAlphabeticToKana(text, sourceMap=null) {
let part = '';
let result = '';
@@ -222,7 +219,7 @@
c = 0x2d; // '-'
} else {
if (part.length > 0) {
- result += convertAlphabeticPartToKana(part, sourceMapping, result.length);
+ result += convertAlphabeticPartToKana(part, sourceMap, result.length);
part = '';
}
result += char;
@@ -232,17 +229,16 @@
}
if (part.length > 0) {
- result += convertAlphabeticPartToKana(part, sourceMapping, result.length);
+ result += convertAlphabeticPartToKana(part, sourceMap, result.length);
}
return result;
}
- function convertAlphabeticPartToKana(text, sourceMapping, sourceMappingStart) {
+ function convertAlphabeticPartToKana(text, sourceMap, sourceMapStart) {
const result = wanakana.toHiragana(text);
// Generate source mapping
- if (Array.isArray(sourceMapping)) {
- if (typeof sourceMappingStart !== 'number') { sourceMappingStart = 0; }
+ if (sourceMap !== null) {
let i = 0;
let resultPos = 0;
const ii = text.length;
@@ -262,18 +258,15 @@
// Merge characters
const removals = iNext - i - 1;
if (removals > 0) {
- let sum = 0;
- const vs = sourceMapping.splice(sourceMappingStart + 1, removals);
- for (const v of vs) { sum += v; }
- sourceMapping[sourceMappingStart] += sum;
+ sourceMap.combine(sourceMapStart, removals);
}
- ++sourceMappingStart;
+ ++sourceMapStart;
// Empty elements
const additions = resultPosNext - resultPos - 1;
for (let j = 0; j < additions; ++j) {
- sourceMapping.splice(sourceMappingStart, 0, 0);
- ++sourceMappingStart;
+ sourceMap.insert(sourceMapStart, 0);
+ ++sourceMapStart;
}
i = iNext;
diff --git a/ext/bg/js/text-source-map.js b/ext/bg/js/text-source-map.js
new file mode 100644
index 00000000..24970978
--- /dev/null
+++ b/ext/bg/js/text-source-map.js
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2020 Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+class TextSourceMap {
+ constructor(source, mapping=null) {
+ this._source = source;
+ this._mapping = (Array.isArray(mapping) ? TextSourceMap._normalizeMapping(mapping) : null);
+ }
+
+ get source() {
+ return this._source;
+ }
+
+ equals(other) {
+ if (this === other) {
+ return true;
+ }
+
+ const source = this._source;
+ if (!(other instanceof TextSourceMap && source === other._source)) {
+ return false;
+ }
+
+ let mapping = this._mapping;
+ let otherMapping = other._mapping;
+ if (mapping === null) {
+ if (otherMapping === null) {
+ return true;
+ }
+ mapping = TextSourceMap._createMapping(source);
+ } else if (otherMapping === null) {
+ otherMapping = TextSourceMap._createMapping(source);
+ }
+
+ const mappingLength = mapping.length;
+ if (mappingLength !== otherMapping.length) {
+ return false;
+ }
+
+ for (let i = 0; i < mappingLength; ++i) {
+ if (mapping[i] !== otherMapping[i]) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ getSourceLength(finalLength) {
+ const mapping = this._mapping;
+ if (mapping === null) {
+ return finalLength;
+ }
+
+ let sourceLength = 0;
+ for (let i = 0; i < finalLength; ++i) {
+ sourceLength += mapping[i];
+ }
+ return sourceLength;
+ }
+
+ combine(index, count) {
+ if (count <= 0) { return; }
+
+ if (this._mapping === null) {
+ this._mapping = TextSourceMap._createMapping(this._source);
+ }
+
+ let sum = this._mapping[index];
+ const parts = this._mapping.splice(index + 1, count);
+ for (const part of parts) {
+ sum += part;
+ }
+ this._mapping[index] = sum;
+ }
+
+ insert(index, ...items) {
+ if (this._mapping === null) {
+ this._mapping = TextSourceMap._createMapping(this._source);
+ }
+
+ this._mapping.splice(index, 0, ...items);
+ }
+
+ static _createMapping(text) {
+ return new Array(text.length).fill(1);
+ }
+
+ static _normalizeMapping(mapping) {
+ const result = [];
+ for (const value of mapping) {
+ result.push(
+ (typeof value === 'number' && Number.isFinite(value)) ?
+ Math.floor(value) :
+ 0
+ );
+ }
+ return result;
+ }
+}
diff --git a/ext/bg/js/translator.js b/ext/bg/js/translator.js
index f16889ce..cd991efa 100644
--- a/ext/bg/js/translator.js
+++ b/ext/bg/js/translator.js
@@ -19,6 +19,7 @@
/* global
* Database
* Deinflector
+ * TextSourceMap
* dictEnabledSet
* dictTagBuildSource
* dictTagSanitize
@@ -367,17 +368,15 @@ class Translator {
const used = new Set();
for (const [halfWidth, numeric, alphabetic, katakana, hiragana] of Translator.getArrayVariants(textOptionVariantArray)) {
let text2 = text;
- let sourceMapping = null;
+ const sourceMap = new TextSourceMap(text2);
if (halfWidth) {
- if (sourceMapping === null) { sourceMapping = Translator.createTextSourceMapping(text2); }
- text2 = jp.convertHalfWidthKanaToFullWidth(text2, sourceMapping);
+ text2 = jp.convertHalfWidthKanaToFullWidth(text2, sourceMap);
}
if (numeric) {
text2 = jp.convertNumericToFullWidth(text2);
}
if (alphabetic) {
- if (sourceMapping === null) { sourceMapping = Translator.createTextSourceMapping(text2); }
- text2 = jp.convertAlphabeticToKana(text2, sourceMapping);
+ text2 = jp.convertAlphabeticToKana(text2, sourceMap);
}
if (katakana) {
text2 = jp.convertHiraganaToKatakana(text2);
@@ -391,7 +390,7 @@ class Translator {
if (used.has(text2Substring)) { break; }
used.add(text2Substring);
for (const deinflection of this.deinflector.deinflect(text2Substring)) {
- deinflection.rawSource = Translator.getDeinflectionRawSource(text, i, sourceMapping);
+ deinflection.rawSource = sourceMap.source.substring(0, sourceMap.getSourceLength(i));
deinflections.push(deinflection);
}
}
@@ -407,25 +406,6 @@ class Translator {
}
}
- static getDeinflectionRawSource(source, length, sourceMapping) {
- if (sourceMapping === null) {
- return source.substring(0, length);
- }
-
- let result = '';
- let index = 0;
- for (let i = 0; i < length; ++i) {
- const c = sourceMapping[i];
- result += source.substring(index, index + c);
- index += c;
- }
- return result;
- }
-
- static createTextSourceMapping(text) {
- return new Array(text.length).fill(1);
- }
-
async findKanji(text, options) {
const dictionaries = dictEnabledSet(options);
const kanjiUnique = new Set();