pdf.js/src/core/xfa/utils.js

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/* Copyright 2021 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.
*/
function getInteger({ data, defaultValue, validate }) {
if (!data) {
return defaultValue;
}
data = data.trim();
const n = parseInt(data, 10);
if (!isNaN(n) && validate(n)) {
return n;
}
return defaultValue;
}
function getKeyword({ data, defaultValue, validate }) {
if (!data) {
return defaultValue;
}
data = data.trim();
if (validate(data)) {
return data;
}
return defaultValue;
}
function getStringOption(data, options) {
return getKeyword({
data,
defaultValue: options[0],
validate: k => options.includes(k),
});
}
export { getInteger, getKeyword, getStringOption };