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* Copyright (c) AXA Shared Services Spain S.A.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* Class for a Named Entity that can be Enumerated or Regular Expression.
*/
class NamedEntity {
/**
* Constructor of the class.
* @param {Object} settings - Settings for the instance.
*/
constructor(settings) {
this.settings = settings || {};
this.name = this.settings.name;
if (this.settings.regex) {
this.type = 'regex';
this.regex = this.settings.regex;
} else {
this.type = this.settings.type || 'enum';
}
if (this.type === 'enum') {
this.options = [];
}
}
/**
* Given an option name, returns the position of the option.
* @param {String} optionName Name of the option.
* @return {Object} Position of the option, -1 if not found.
*/
getOptionPosition(name) {
if (this.options) {
for (let i = 0; i < this.options.length; i += 1) {
if (this.options[i].name === name) {
return i;
}
}
}
return -1;
}
/**
* Given an option name, returns the option instance from the entity.
* If force is true, then it forces the creation.
* @param {String} optionName Name of the option.
* @param {boolean} force Flag to force creation.
* @returns {Object} Option if found, undefined otherwise.
*/
getOption(name, force = false) {
const index = this.getOptionPosition(name);
if (index === -1 && force === true) {
return this.addOption(name);
}
return index > -1 ? this.options[index] : undefined;
}
/**
* Add an option to the entity.
* @param {String} name Name of the option.
* @returns {Object} Option created or found.
*/
addOption(name) {
let option = this.getOption(name);
if (!option) {
option = { name, texts: {} };
this.options.push(option);
}
return option;
}
/**
* Remove an option from the entity.
* @param {String} name Name of the option.
*/
removeOption(name) {
const index = this.getOptionPosition(name);
if (index !== -1) {
this.options.splice(index, 1);
}
}
/**
* Add texts to the given languages of an option.
* @param {String} optionName Name of the option.
* @param {String[]} srcLanguages Language or languages for adding the texts.
* @param {String[]} srcTexts Text or texts to be added.
*/
addText(optionName, srcLanguages, srcTexts) {
const option = this.getOption(optionName, true);
const languages = Array.isArray(srcLanguages) ? srcLanguages : [srcLanguages];
const texts = Array.isArray(srcTexts) ? srcTexts : [srcTexts];
languages.forEach((language) => {
const optionTexts = option.texts[language];
if (!optionTexts) {
option.texts[language] = texts.slice();
} else {
texts.forEach((text) => {
optionTexts.push(text);
});
}
});
}
/**
* Remove texts for the given languages of the option.
* @param {String} optionName Name of the option.
* @param {String[]} srcLanguages Languages affected.
* @param {String[]} srcTexts Texts to be removed.
*/
removeText(optionName, srcLanguages, srcTexts) {
const option = this.getOption(optionName);
if (!option) {
return;
}
const languages = Array.isArray(srcLanguages) ? srcLanguages : [srcLanguages];
const texts = Array.isArray(srcTexts) ? srcTexts : [srcTexts];
languages.forEach((language) => {
const optionTexts = option.texts[language];
if (optionTexts) {
texts.forEach((text) => {
const index = optionTexts.indexOf(text);
if (index !== -1) {
optionTexts.splice(index, 1);
}
});
}
});
}
getMatchs(utterance) {
const result = [];
let matchFound;
do {
const match = this.regex.exec(utterance);
if (match) {
result.push({
start: match.index,
end: this.regex.lastIndex,
accuracy: 1,
sourceText: match[0],
utteranceText: match[0],
});
matchFound = true;
} else {
matchFound = false;
}
} while (matchFound);
return result;
}
}
module.exports = NamedEntity;
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