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utils.js
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utils.js
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/**
* Copyright 2013-2021 the original author or authors from the JHipster project.
*
* This file is part of the JHipster project, see https://www.jhipster.tech/
* for more information.
*
* 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
*
* https://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.
*/
/* eslint-disable no-console */
const path = require('path');
const shelljs = require('shelljs');
const ejs = require('ejs');
const _ = require('lodash');
const fs = require('fs');
const crypto = require('crypto');
const os = require('os');
const constants = require('./generator-constants');
const FileUtils = require('../jdl/utils/file-utils');
const LANGUAGES_MAIN_SRC_DIR = `${__dirname}/languages/templates/${constants.CLIENT_MAIN_SRC_DIR}`;
module.exports = {
rewrite,
rewriteFile,
replaceContent,
classify,
rewriteJSONFile,
copyWebResource,
renderContent,
deepFind,
getJavadoc,
buildEnumInfo,
getEnumInfo,
copyObjectProps,
decodeBase64,
getDBTypeFromDBValue,
getBase64Secret,
getRandomHex,
checkStringInFile,
checkRegexInFile,
loadYoRc,
packageNameToNamespace,
stringHashCode,
gitExec,
isGitInstalled,
vueReplaceTranslation,
vueAddPageToRouterImport,
vueAddPageToRouter,
vueAddPageServiceToMainImport,
vueAddPageServiceToMain,
vueAddPageProtractorConf,
languageSnakeCase,
languageToJavaLanguage,
};
const databaseTypes = require('../jdl/jhipster/database-types');
const SQL = databaseTypes.SQL;
/**
* Rewrite file with passed arguments
* @param {object} args argument object (containing path, file, haystack, etc properties)
* @param {object} generator reference to the generator
*/
function rewriteFile(args, generator) {
let fullPath;
if (args.path) {
fullPath = path.join(args.path, args.file);
}
fullPath = generator.destinationPath(args.file);
args.haystack = generator.fs.read(fullPath);
const body = rewrite(args);
generator.fs.write(fullPath, body);
return args.haystack !== body;
}
/**
* Replace content
* @param {object} args argument object
* @param {object} generator reference to the generator
*/
function replaceContent(args, generator) {
const fullPath = generator.destinationPath(args.file);
const re = args.regex ? new RegExp(args.pattern, 'g') : args.pattern;
const currentBody = generator.fs.read(fullPath);
const newBody = currentBody.replace(re, args.content);
generator.fs.write(fullPath, newBody);
return newBody !== currentBody;
}
/**
* Escape regular expressions.
*
* @param {string} str string
* @returns {string} string with regular expressions escaped
*/
function escapeRegExp(str) {
return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, '\\$&'); // eslint-disable-line
}
/**
* Normalize line endings.
* If in Windows is Git autocrlf used then need to replace \r\n with \n
* to achieve consistent comparison result when comparing strings read from file.
*
* @param {string} str string
* @returns {string} string where CRLF is replaced with LF in Windows
*/
function normalizeLineEndings(str) {
const isWin32 = os.platform() === 'win32';
return isWin32 ? str.replace(/\r\n/g, '\n') : str;
}
/**
* Change spaces sequences and '>' to allow any number of spaces or new line prefix
*
* @param {string} str string
* @returns {string} string where CRLF is replaced with LF in Windows
*/
function convertToPrettierExpressions(str) {
return str.replace(/\s+/g, '([\\s\n]*)').replace(/>+/g, '(\n?[\\s]*)>');
}
/**
* Rewrite using the passed argument object.
*
* @param {object} args arguments object (containing splicable, haystack, needle properties) to be used
* @param {string[]} args.splicable - content to be added.
* @param {boolean} [args.prettierAware] - apply prettier aware expressions before looking for applied needles.
* @param {string|RegExp} [args.regexp] - use another content for looking for applied needles.
* @returns {*} re-written file
*/
function rewrite(args) {
// check if splicable is already in the body text
let re;
if (args.regexp) {
re = args.regexp;
if (!re.test) {
re = escapeRegExp(re);
}
} else {
re = args.splicable.map(line => `\\s*${escapeRegExp(normalizeLineEndings(line))}`).join('\n');
}
if (!re.test) {
if (args.prettierAware) {
re = convertToPrettierExpressions(re);
}
re = new RegExp(re);
}
if (re.test(normalizeLineEndings(args.haystack))) {
return args.haystack;
}
const lines = args.haystack.split('\n');
let otherwiseLineIndex = -1;
lines.forEach((line, i) => {
if (line.includes(args.needle)) {
otherwiseLineIndex = i;
}
});
if (otherwiseLineIndex === -1) {
console.warn(`Needle ${args.needle} not found at file ${args.file}`);
return args.haystack;
}
let spaces = 0;
while (lines[otherwiseLineIndex].charAt(spaces) === ' ') {
spaces += 1;
}
let spaceStr = '';
// eslint-disable-next-line no-cond-assign
while ((spaces -= 1) >= 0) {
spaceStr += ' ';
}
lines.splice(otherwiseLineIndex, 0, args.splicable.map(line => spaceStr + line).join('\n'));
return lines.join('\n');
}
/**
* Convenient function to convert string into valid java class name
* Note: _.classify uses _.titleize which lowercase the string,
* so if the user chooses a proper ClassName it will not rename properly
*
* @param string string to 'class'-ify
* @returns {string} 'class'-ified string
*/
function classify(string) {
string = string.replace(/[\W_](\w)/g, match => ` ${match[1].toUpperCase()}`).replace(/\s/g, '');
return string.charAt(0).toUpperCase() + string.slice(1);
}
/**
* Rewrite JSON file
*
* @param {string} filePath file path
* @param {function} rewriteFile rewriteFile function
* @param {object} generator reference to the generator
*/
function rewriteJSONFile(filePath, rewriteFile, generator) {
filePath = generator.destinationPath(filePath);
const jsonObj = generator.fs.readJSON(filePath);
rewriteFile(jsonObj, generator);
generator.fs.writeJSON(filePath, jsonObj, null, 2);
}
/**
* Copy web resources
*
* @param {string} source source
* @param {string} dest destination
* @param {regex} regex regex
* @param {string} type type of resource (html, js, etc)
* @param {object} generator reference to the generator
* @param {object} opt options
* @param {any} template template
*/
function copyWebResource(source, dest, regex, type, generator, opt = {}, template) {
if (generator.enableTranslation) {
generator.template(source, dest, generator, opt);
} else {
dest = generator.destinationPath(dest);
if (!dest) {
return;
}
renderContent(source, generator, generator, opt, body => {
body = body.replace(regex, '');
switch (type) {
case 'html':
body = replacePlaceholders(body, generator);
break;
case 'js':
body = replaceTitle(body, generator);
if (dest.endsWith('error.route.ts')) {
body = replaceErrorMessage(body, generator);
}
break;
case 'jsx':
body = replaceTranslation(body, generator);
break;
default:
break;
}
generator.fs.write(dest, body);
});
}
}
/**
* Render content
*
* @param {string} source source
* @param {object} generator reference to the generator
* @param {any} context context
* @param {object} options options
* @param {function} [cb] callback function
* @return {Promise<String>} Promise rendered content
*/
function renderContent(source, generator, context, options, cb) {
options = {
root: options.root || generator.jhipsterTemplatesFolders || generator.templatePath(),
context: generator,
...options,
};
const promise = ejs.renderFile(generator.templatePath(source), context, options);
if (cb) {
return promise
.then(res => cb(res))
.catch(err => {
generator.warning(`Copying template ${source} failed. [${err}]`);
throw err;
});
}
return promise;
}
/**
*
* @param {string} body html body
* @param {object} generator reference to the generator
* @returns string with pageTitle replaced
*/
function replaceTitle(body, generator) {
const regex = /pageTitle[\s]*:[\s]*['|"]([a-zA-Z0-9.\-_]+)['|"]/g;
return replaceTranslationKeysWithText(body, generator, regex);
}
/**
*
* @param {string} body html body
* @param {object} generator reference to the generator
* @returns string with pageTitle replaced
*/
function replaceErrorMessage(body, generator) {
const regex = /errorMessage[\s]*:[\s]*['|"]([a-zA-Z0-9.\-_]+)['|"]/g;
return replaceTranslationKeysWithText(body, generator, regex);
}
/**
*
* @param {string} body html body
* @param {object} generator reference to the generator
* @param {object} regex regular expression to find keys
* @returns string with pageTitle replaced
*/
function replaceTranslationKeysWithText(body, generator, regex) {
let match;
// eslint-disable-next-line no-cond-assign
while ((match = regex.exec(body)) !== null) {
// match is now the next match, in array form and our key is at index 1, index 1 is replace target.
const key = match[1];
const target = key;
const jsonData = geti18nJson(key, generator);
const keyValue = jsonData !== undefined ? deepFind(jsonData, key) : undefined;
body = body.replace(target, keyValue !== undefined ? keyValue : generator.baseName);
}
return body;
}
/**
*
* @param {string} body html body
* @param {object} generator reference to the generator
* @returns string with placeholders replaced
*/
function replacePlaceholders(body, generator) {
const re = /placeholder=['|"]([{]{2}\s*['|"]([a-zA-Z0-9.\-_]+)['|"][\s][|][\s](translate)\s*[}]{2})['|"]/g;
let match;
// eslint-disable-next-line no-cond-assign
while ((match = re.exec(body)) !== null) {
// match is now the next match, in array form and our key is at index 2, index 1 is replace target.
const key = match[2];
const target = match[1];
const jsonData = geti18nJson(key, generator);
const keyValue = jsonData !== undefined ? deepFind(jsonData, key, true) : undefined; // dirty fix to get placeholder as it is not in proper json format, name has a dot in it. Assuming that all placeholders are in similar format
body = body.replace(target, keyValue !== undefined ? keyValue : '');
}
return body;
}
/**
*
* @param {string} body html body
* @param {object} generator reference to the generator
* @returns string with Translate components replaced
*/
function replaceTranslation(body, generator) {
const replaceRegex = (re, defultReplaceText) => {
let match;
// eslint-disable-next-line no-cond-assign
while ((match = re.exec(body)) !== null) {
// match is now the next match, in array form and our key is at index 2, index 1 is replace target.
const key = match[2];
const target = match[1];
const limit = match[4]; // string indicating validation limit (e.g. "{ max: 4 }")
const jsonData = geti18nJson(key, generator);
let keyValue = jsonData !== undefined ? deepFind(jsonData, key) : undefined;
if (!keyValue) {
keyValue = deepFind(jsonData, key, true); // dirty fix to get placeholder as it is not in proper json format, name has a dot in it. Assuming that all placeholders are in similar format
}
if (limit) {
// Replace "{{ placeholder }}" with numeric limit
keyValue = keyValue.replace(/{{.+}}/, /{.+:\s(.+)\s}/.exec(limit)[1]);
}
body = body.replace(target, keyValue !== undefined ? `"${keyValue}"` : defultReplaceText);
}
};
replaceRegex(/(\{translate\('([a-zA-Z0-9.\-_]+)'(, ?null, ?'.*')?\)\})/g, '""');
replaceRegex(/(translate\(\s*'([a-zA-Z0-9.\-_]+)'(,\s*(null|\{.*\}),?\s*('.*')?\s*)?\))/g, "''");
return body;
}
/**
*
* @param key i18n key
* @param {object} generator reference to the generator
* @returns parsed json file
*/
function geti18nJson(key, generator) {
const i18nDirectory = `${LANGUAGES_MAIN_SRC_DIR}i18n/en/`;
const names = [];
let result;
const namePrefix = _.kebabCase(key.split('.')[0]);
if (['entity', 'error', 'footer'].includes(namePrefix)) {
names.push('global');
if (namePrefix === 'error') {
names.push('error');
}
} else {
names.push(namePrefix);
}
for (let i = 0; i < names.length; i++) {
let filename = `${i18nDirectory + names[i]}.json`;
let render;
if (!shelljs.test('-f', filename)) {
filename = `${filename}.ejs`;
render = true;
}
try {
let file = generator.fs.read(filename);
file = render ? ejs.render(file, generator, {}) : file;
file = JSON.parse(file);
if (result === undefined) {
result = file;
} else {
result = { ...result, ...file };
}
} catch (err) {
generator.log(err);
generator.log(`Error in file: ${filename}`);
}
}
return result;
}
/**
*
* @param obj object to find in
* @param path path to traverse
* @param placeholder placeholder
*/
function deepFind(obj, path, placeholder) {
const paths = path.split('.');
let current = obj;
if (placeholder) {
// dirty fix for placeholders, the json files needs to be corrected
paths[paths.length - 2] = `${paths[paths.length - 2]}.${paths[paths.length - 1]}`;
paths.pop();
}
for (let i = 0; i < paths.length; ++i) {
if (current[paths[i]] === undefined) {
return undefined;
}
current = current[paths[i]];
}
return current;
}
/**
* Convert passed block of string to javadoc formatted string.
*
* @param {string} text text to convert to javadoc format
* @param {number} indentSize indent size
* @returns javadoc formatted string
*/
function getJavadoc(text, indentSize) {
if (!text) {
text = '';
}
if (text.includes('"')) {
text = text.replace(/"/g, '\\"');
}
let javadoc = `${_.repeat(' ', indentSize)}/**`;
const rows = text.split('\n');
for (let i = 0; i < rows.length; i++) {
javadoc = `${javadoc}\n${_.repeat(' ', indentSize)} * ${rows[i]}`;
}
javadoc = `${javadoc}\n${_.repeat(' ', indentSize)} */`;
return javadoc;
}
/**
* Build an enum object
* @param {Object} field - entity field
* @param {String} clientRootFolder - the client's root folder
* @return {Object} the enum info.
*/
function getEnumInfo(field, clientRootFolder) {
const fieldType = field.fieldType;
// Todo: check if the next line does a side-effect and refactor it.
field.enumInstance = _.lowerFirst(fieldType);
const enums = field.fieldValues.split(',').map(fieldValue => fieldValue.trim());
const customValuesState = getCustomValuesState(enums);
return {
enumName: fieldType,
enumInstance: field.enumInstance,
enums,
...customValuesState,
enumValues: getEnums(enums, customValuesState),
clientRootFolder: clientRootFolder ? `${clientRootFolder}-` : '',
};
}
/**
* @Deprecated
* Build an enum object, deprecated use getEnumInfoInstead
* @param {any} field : entity field
* @param {string} frontendAppName
* @param {string} packageName
* @param {string} clientRootFolder
*/
function buildEnumInfo(field, frontendAppName, packageName, clientRootFolder) {
const fieldType = field.fieldType;
field.enumInstance = _.lowerFirst(fieldType);
const enums = field.fieldValues.replace(/\s/g, '').split(',');
const enumsWithCustomValue = getEnumsWithCustomValue(enums);
return {
enumName: fieldType,
enumValues: field.fieldValues.split(',').join(', '),
enumInstance: field.enumInstance,
enums,
enumsWithCustomValue,
frontendAppName,
packageName,
clientRootFolder: clientRootFolder ? `${clientRootFolder}-` : '',
};
}
/**
* @deprecated
* private function to remove for jhipster v7
* @param enums
* @return {*}
*/
function getEnumsWithCustomValue(enums) {
return enums.reduce((enumsWithCustomValueArray, currentEnumValue) => {
if (doesTheEnumValueHaveACustomValue(currentEnumValue)) {
const matches = /([A-Z\-_]+)(\((.+?)\))?/.exec(currentEnumValue);
const enumValueName = matches[1];
const enumValueCustomValue = matches[3];
enumsWithCustomValueArray.push({ name: enumValueName, value: enumValueCustomValue });
} else {
enumsWithCustomValueArray.push({ name: currentEnumValue, value: false });
}
return enumsWithCustomValueArray;
}, []);
}
function getCustomValuesState(enumValues) {
const state = {
withoutCustomValue: 0,
withCustomValue: 0,
};
enumValues.forEach(enumValue => {
if (doesTheEnumValueHaveACustomValue(enumValue)) {
state.withCustomValue++;
} else {
state.withoutCustomValue++;
}
});
return {
withoutCustomValues: state.withCustomValue === 0,
withSomeCustomValues: state.withCustomValue !== 0 && state.withoutCustomValue !== 0,
withCustomValues: state.withoutCustomValue === 0,
};
}
function getEnums(enums, customValuesState) {
if (customValuesState.withoutCustomValues) {
return enums.map(enumValue => ({ name: enumValue, value: enumValue }));
}
return enums.map(enumValue => {
if (!doesTheEnumValueHaveACustomValue(enumValue)) {
return { name: enumValue.trim(), value: enumValue.trim() };
}
// eslint-disable-next-line no-unused-vars
const matched = /\s*(.+?)\s*\((.+?)\)/.exec(enumValue);
return {
name: matched[1],
value: matched[2],
};
});
}
function doesTheEnumValueHaveACustomValue(enumValue) {
return enumValue.includes('(');
}
/**
* Copy object props from source to destination
* @param {*} toObj
* @param {*} fromObj
*/
function copyObjectProps(toObj, fromObj) {
// we use Object.assign instead of spread as we want to mutilate the object.
Object.assign(toObj, fromObj);
}
/**
* Decode the given string from base64 to said encoding.
* @param string the base64 string to decode
* @param encoding the encoding to decode into. default to 'utf-8'
*/
function decodeBase64(string, encoding = 'utf-8') {
return Buffer.from(string, 'base64').toString(encoding);
}
function loadYoRc(filePath = '.yo-rc.json') {
if (!FileUtils.doesFileExist(filePath)) {
return undefined;
}
return JSON.parse(fs.readFileSync(filePath, { encoding: 'utf-8' }));
}
/**
* Get DB type from DB value
* @param {string} db - db
*/
function getDBTypeFromDBValue(db) {
if (constants.SQL_DB_OPTIONS.map(db => db.value).includes(db)) {
return SQL;
}
return db;
}
/**
* Get a random hex string
* @param {int} len the length to use, defaults to 50
*/
function getRandomHex(len = 50) {
return crypto.randomBytes(len).toString('hex');
}
/**
* Generates a base64 secret from given string or random hex
* @param {string} value the value used to get base64 secret
* @param {int} len the length to use for random hex, defaults to 50
*/
function getBase64Secret(value, len = 50) {
return Buffer.from(value || getRandomHex(len)).toString('base64');
}
/**
* Checks if string is already in file
* @param {string} path file path
* @param {string} search search string
* @param {object} generator reference to generator
* @returns {boolean} true if string is in file, false otherwise
*/
function checkStringInFile(path, search, generator) {
const fileContent = generator.fs.read(generator.destinationPath(path));
return fileContent.includes(search);
}
/**
* Checks if regex is found in file
* @param {string} path file path
* @param {regex} regex regular expression
* @param {object} generator reference to generator
* @returns {boolean} true if regex is matched in file, false otherwise
*/
function checkRegexInFile(path, regex, generator) {
const fileContent = generator.fs.read(generator.destinationPath(path));
return fileContent.match(regex);
}
/**
* Remove 'generator-' prefix from generators for compatibility with yeoman namespaces.
* @param {string} packageName - name of the blueprint's package name
* @returns {string} namespace of the blueprint
*/
function packageNameToNamespace(packageName) {
return packageName.replace('generator-', '');
}
/**
* Calculate a hash code for a given string.
* @param {string} str - any string
* @returns {number} returns the calculated hash code.
*/
function stringHashCode(str) {
let hash = 0;
for (let i = 0; i < str.length; i++) {
const character = str.charCodeAt(i);
hash = (hash << 5) - hash + character; // eslint-disable-line no-bitwise
hash |= 0; // eslint-disable-line no-bitwise
}
if (hash < 0) {
hash *= -1;
}
return hash;
}
/**
* Executes a Git command using shellJS
* gitExec(args [, options, callback])
*
* @param {string|array} args - can be an array of arguments or a string command
* @param {object} options[optional] - takes any of child process options
* @param {function} callback[optional] - a callback function to be called once process complete, The call back will receive code, stdout and stderr
* @return {object} when in synchronous mode, this returns a ShellString. Otherwise, this returns the child process object.
*/
function gitExec(args, options = {}, callback) {
if (typeof options === 'function') {
callback = options;
options = {};
}
if (options.async === undefined) options.async = callback !== undefined;
if (options.silent === undefined) options.silent = true;
if (options.trace === undefined) options.trace = true;
if (!Array.isArray(args)) {
args = [args];
}
const command = `git ${args.join(' ')}`;
if (options.trace) {
console.info(command);
}
if (callback) {
return shelljs.exec(command, options, callback);
}
return shelljs.exec(command, options);
}
/**
* Checks if git is installed.
*
* @param {function} callback[optional] - function to be called after checking if git is installed. The callback will receive the code of the shell command executed.
*
* @return {boolean} true if installed; false otherwise..
*/
function isGitInstalled(callback) {
const code = gitExec('--version', { trace: false }).code;
if (callback) callback(code);
return code === 0;
}
/**
* Replace translation for Vue application
* @param {*} generator
* @param {*} files
*/
function vueReplaceTranslation(generator, files) {
for (let i = 0; i < files.length; i++) {
const filePath = `${generator.CLIENT_MAIN_SRC_DIR}${files[i]}`;
// Match the below attributes and the $t() method
const regexp = ['v-text', 'v-bind:placeholder', 'v-html', 'v-bind:title', 'v-bind:label', 'v-bind:value', 'v-bind:html']
.map(s => `${s}="\\$t\\(.*?\\)"`)
.join(')|(');
this.replaceContent(
{
file: filePath,
pattern: new RegExp(` ?(${regexp})`, 'g'),
content: '',
},
generator
);
}
}
function vueAddPageToRouterImport(generator, pageName, pageFolderName, pageFilename = pageFolderName) {
rewriteFile(
{
file: `${generator.CLIENT_MAIN_SRC_DIR}/app/router/pages.ts`,
needle: 'jhipster-needle-add-entity-to-router-import',
splicable: [
generator.stripMargin(
// prettier-ignore
`|// prettier-ignore
|const ${pageName} = () => import('@/pages/${pageFolderName}/${pageFilename}.vue');`
),
],
},
generator
);
}
function vueAddPageToRouter(generator, pageName, pageFilename) {
rewriteFile(
{
file: `${generator.CLIENT_MAIN_SRC_DIR}/app/router/pages.ts`,
needle: 'jhipster-needle-add-entity-to-router',
splicable: [
generator.stripMargin(
// prettier-ignore
`|{
| path: '/pages/${pageFilename}',
| name: '${pageName}',
| component: ${pageName},
| meta: { authorities: [Authority.USER] }
| },`
),
],
},
generator
);
}
function vueAddPageServiceToMainImport(generator, pageName, pageFolderName, pageFilename = pageFolderName) {
rewriteFile(
{
file: `${generator.CLIENT_MAIN_SRC_DIR}/app/main.ts`,
needle: 'jhipster-needle-add-entity-service-to-main-import',
splicable: [
generator.stripMargin(
// prettier-ignore
`|import ${pageName}Service from '@/pages/${pageFolderName}/${pageFilename}.service';`
),
],
},
generator
);
}
function vueAddPageServiceToMain(generator, pageName, pageInstance) {
rewriteFile(
{
file: `${generator.CLIENT_MAIN_SRC_DIR}/app/main.ts`,
needle: 'jhipster-needle-add-entity-service-to-main',
splicable: [
generator.stripMargin(
// prettier-ignore
`|${pageInstance}Service: () => new ${pageName}Service(),`
),
],
},
generator
);
}
function vueAddPageProtractorConf(generator) {
rewriteFile(
{
file: `${generator.CLIENT_TEST_SRC_DIR}/protractor.conf.js`,
needle: 'jhipster-needle-add-protractor-tests',
splicable: [generator.stripMargin("'./e2e/pages/**/*.spec.ts',")],
},
generator
);
}
function languageSnakeCase(language) {
// Template the message server side properties
return language.replace(/-/g, '_');
}
function languageToJavaLanguage(language) {
// Template the message server side properties
const langProp = languageSnakeCase(language);
// Target file : change xx_yyyy_zz to xx_yyyy_ZZ to match java locales
return langProp.replace(/_[a-z]+$/g, lang => lang.toUpperCase());
}