static/widgets/load-save.ts - compiler-explorer - Rivoreo Source Code Repositories

 // Copyright (c) 2022, Compiler Explorer Authors
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
 //
 //     * Redistributions of source code must retain the above copyright notice,
 //       this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above copyright
 //       notice, this list of conditions and the following disclaimer in the
 //       documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 // POSSIBILITY OF SUCH DAMAGE.

 import $ from 'jquery';
 import _ from 'underscore';
 import {saveAs} from 'file-saver';
 import {Alert} from './alert';
 import {ga} from '../analytics';
 import * as local from '../local';
 import {Language} from '../../types/languages.interfaces';
 import {unwrap, unwrapString} from '../assert';

 const history = require('../history');

 type PopulateItem = {name: string; load: () => void; delete?: () => void; overwrite?: () => void};

 export class LoadSave {
     private modal: JQuery | null = null;
     private alertSystem: Alert;
     private onLoadCallback: (...any) => void = _.identity;
     private editorText = '';
     private extension = '.txt';
     private base: string;
     private currentLanguage: Language | null;

     constructor() {
         this.alertSystem = new Alert();
         this.alertSystem.prefixMessage = 'Load-Saver';
         this.base = window.httpRoot;
         this.fetchBuiltins()
             .then(() => {})
             .catch(() => {});
     }

     public static getLocalFiles(): Record<string, string> {
         return JSON.parse(local.get('files', '{}'));
     }

     public static setLocalFile(name: string, file: string) {
         const files = LoadSave.getLocalFiles();
         files[name] = file;
         local.set('files', JSON.stringify(files));
     }

     public static removeLocalFile(name: string) {
         const files = LoadSave.getLocalFiles();
         if (name in files) {
             delete files[name];
         }
         local.set('files', JSON.stringify(files));
     }

     private async fetchBuiltins(): Promise<Record<string, any>[]> {
         return new Promise<Record<string, any>[]>(resolve => {
             $.getJSON(window.location.origin + this.base + 'source/builtin/list', resolve);
         });
     }

     public initializeIfNeeded() {
         if (this.modal === null || this.modal.length === 0) {
             this.modal = $('#load-save');

             this.modal.find('.local-file').on('change', e => this.onLocalFile(e));
             this.modal.find('.save-button').on('click', () => this.onSaveToBrowserStorage());
             this.modal.find('.save-file').on('click', () => this.onSaveToFile());
         }
     }

     private onLoad(data: string, name?: string) {
         this.onLoadCallback(data, name);
     }

     private doLoad(element) {
         $.getJSON(
             window.location.origin + this.base + 'source/builtin/load/' + element.lang + '/' + element.file,
             response => this.onLoad(response.file)
         );
         this.modal?.modal('hide');
     }

     private static populate(root: JQuery, list: PopulateItem[]) {
         root.find('li:not(.template)').remove();
         const template = root.find('.template');
         for (const elem of list) {
             const clone = template.clone();
             clone.removeClass('template').appendTo(root).find('a').text(elem.name).on('click', elem.load);
             const deleteButton = clone.find('button.delete');
             if (elem.delete !== undefined) {
                 deleteButton.on('click', () => elem.delete?.());
             }
             const overwriteButton = clone.find('button.overwrite');
             if (elem.overwrite !== undefined) {
                 overwriteButton.on('click', () => elem.overwrite?.());
             }
         }
     }

     private async populateBuiltins() {
         const builtins = (await this.fetchBuiltins()).filter(entry => this.currentLanguage?.id === entry.lang);
         return LoadSave.populate(
             unwrap(this.modal).find('.examples'),
             builtins.map(elem => {
                 return {
                     name: elem.name,
                     load: () => this.doLoad(elem),
                 };
             })
         );
     }

     private populateLocalStorage() {
         const files = LoadSave.getLocalFiles();
         const keys = Object.keys(files);

         LoadSave.populate(
             unwrap(this.modal).find('.local-storage'),
             keys.map(name => {
                 const data = files[name];
                 return {
                     name: name,
                     load: () => {
                         this.onLoad(data);
                         this.modal?.modal('hide');
                     },
                     delete: () => {
                         this.alertSystem.ask(
                             `Delete ${_.escape(name)}?`,
                             `Do you want to delete '${_.escape(name)}'?`,
                             {
                                 yes: () => {
                                     LoadSave.removeLocalFile(name);
                                     this.populateLocalStorage();
                                 },
                             }
                         );
                     },
                     overwrite: () => {
                         this.alertSystem.ask(
                             `Overwrite ${_.escape(name)}?`,
                             `Do you want to overwrite '${_.escape(name)}'?`,
                             {
                                 yes: () => {
                                     LoadSave.setLocalFile(name, this.editorText);
                                     this.populateLocalStorage();
                                 },
                             }
                         );
                     },
                 };
             })
         );
     }

     private populateLocalHistory() {
         LoadSave.populate(
             unwrap(this.modal).find('.local-history'),
             history.sources(unwrap(this.currentLanguage).id).map(data => {
                 const dt = new Date(data.dt).toString();
                 return {
                     name: dt.replace(/\s\(.*\)/, ''),
                     load: () => {
                         this.onLoad(data.source);
                         this.modal?.modal('hide');
                     },
                 };
             })
         );
     }

     // From https://developers.google.com/web/updates/2014/08/Easier-ArrayBuffer-String-conversion-with-the-Encoding-API
     private static ab2str(buf) {
         const dataView = new DataView(buf);
         // The TextDecoder interface is documented at http://encoding.spec.whatwg.org/#interface-textdecoder
         const decoder = new TextDecoder('utf-8');
         return decoder.decode(dataView);
     }

     private onLocalFile(event: JQuery.ChangeEvent) {
         const files = event.target.files;
         if (files.length !== 0) {
             const file = files[0];
             const reader = new FileReader();
             reader.onload = () => {
                 let result: string;
                 if (reader.result instanceof ArrayBuffer) {
                     result = LoadSave.ab2str(reader.result);
                 } else {
                     result = reader.result ?? '';
                 }
                 this.onLoad(result, file.name);
             };
             reader.readAsText(file);
         }
         this.modal?.modal('hide');
     }

     public run(onLoad, editorText, currentLanguage: Language) {
         this.initializeIfNeeded();
         this.populateLocalStorage();
         this.setMinimalOptions(editorText, currentLanguage);
         this.populateLocalHistory();
         this.onLoadCallback = onLoad;
         unwrap(this.modal).find('.local-file').attr('accept', currentLanguage.extensions.join(','));
         this.populateBuiltins().then(() => this.modal?.modal());
         ga.proxy('send', {
             hitType: 'event',
             eventCategory: 'OpenModalPane',
             eventAction: 'LoadSave',
         });
     }

     private onSaveToBrowserStorage() {
         const saveNameValue = unwrapString(this.modal?.find('.save-name').val());
         if (!saveNameValue) {
             this.alertSystem.alert('Save name', 'Invalid save name');
             return;
         }
         const name = `${saveNameValue} (${this.currentLanguage?.name ?? ''})`;
         const doneCallback = () => {
             LoadSave.setLocalFile(name, this.editorText);
         };
         if (name in LoadSave.getLocalFiles()) {
             this.modal?.modal('hide');
             this.alertSystem.ask(
                 'Replace current?',
                 `Do you want to replace the existing saved file '${_.escape(name)}'?`,
                 {yes: doneCallback}
             );
         } else {
             doneCallback();
             this.modal?.modal('hide');
         }
     }

     setMinimalOptions(editorText: string, currentLanguage: Language) {
         this.editorText = editorText;
         this.currentLanguage = currentLanguage;
         this.extension = currentLanguage.extensions[0] || '.txt';
     }

     onSaveToFile(fileEditor?: string) {
         try {
             const fileLang = this.currentLanguage?.name ?? '';
             const name = fileLang && fileEditor !== undefined ? fileLang + ' Editor #' + fileEditor + ' ' : '';
             saveAs(
                 new Blob([this.editorText], {type: 'text/plain;charset=utf-8'}),
                 'Compiler Explorer ' + name + 'Code' + this.extension
             );
             return true;
         } catch (e) {
             this.alertSystem.notify('Error while saving your code. Use the clipboard instead.', {
                 group: 'savelocalerror',
                 alertClass: 'notification-error',
                 dismissTime: 5000,
             });
             return false;
         }
     }
 }
	// Copyright (c) 2022, Compiler Explorer Authors
	// All rights reserved.
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are met:
	//
	// * Redistributions of source code must retain the above copyright notice,
	// this list of conditions and the following disclaimer.
	// * Redistributions in binary form must reproduce the above copyright
	// notice, this list of conditions and the following disclaimer in the
	// documentation and/or other materials provided with the distribution.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	// POSSIBILITY OF SUCH DAMAGE.

	import $ from 'jquery';
	import _ from 'underscore';
	import {saveAs} from 'file-saver';
	import {Alert} from './alert';
	import {ga} from '../analytics';
	import * as local from '../local';
	import {Language} from '../../types/languages.interfaces';
	import {unwrap, unwrapString} from '../assert';

	const history = require('../history');

	type PopulateItem = {name: string; load: () => void; delete?: () => void; overwrite?: () => void};

	export class LoadSave {
	private modal: JQuery \| null = null;
	private alertSystem: Alert;
	private onLoadCallback: (...any) => void = _.identity;
	private editorText = '';
	private extension = '.txt';
	private base: string;
	private currentLanguage: Language \| null;

	constructor() {
	this.alertSystem = new Alert();
	this.alertSystem.prefixMessage = 'Load-Saver';
	this.base = window.httpRoot;
	this.fetchBuiltins()
	.then(() => {})
	.catch(() => {});
	}

	public static getLocalFiles(): Record<string, string> {
	return JSON.parse(local.get('files', '{}'));
	}

	public static setLocalFile(name: string, file: string) {
	const files = LoadSave.getLocalFiles();
	files[name] = file;
	local.set('files', JSON.stringify(files));
	}

	public static removeLocalFile(name: string) {
	const files = LoadSave.getLocalFiles();
	if (name in files) {
	delete files[name];
	}
	local.set('files', JSON.stringify(files));
	}

	private async fetchBuiltins(): Promise<Record<string, any>[]> {
	return new Promise<Record<string, any>[]>(resolve => {
	$.getJSON(window.location.origin + this.base + 'source/builtin/list', resolve);
	});
	}

	public initializeIfNeeded() {
	if (this.modal === null \|\| this.modal.length === 0) {
	this.modal = $('#load-save');

	this.modal.find('.local-file').on('change', e => this.onLocalFile(e));
	this.modal.find('.save-button').on('click', () => this.onSaveToBrowserStorage());
	this.modal.find('.save-file').on('click', () => this.onSaveToFile());
	}
	}

	private onLoad(data: string, name?: string) {
	this.onLoadCallback(data, name);
	}

	private doLoad(element) {
	$.getJSON(
	window.location.origin + this.base + 'source/builtin/load/' + element.lang + '/' + element.file,
	response => this.onLoad(response.file)
	);
	this.modal?.modal('hide');
	}

	private static populate(root: JQuery, list: PopulateItem[]) {
	root.find('li:not(.template)').remove();
	const template = root.find('.template');
	for (const elem of list) {
	const clone = template.clone();
	clone.removeClass('template').appendTo(root).find('a').text(elem.name).on('click', elem.load);
	const deleteButton = clone.find('button.delete');
	if (elem.delete !== undefined) {
	deleteButton.on('click', () => elem.delete?.());
	}
	const overwriteButton = clone.find('button.overwrite');
	if (elem.overwrite !== undefined) {
	overwriteButton.on('click', () => elem.overwrite?.());
	}
	}
	}

	private async populateBuiltins() {
	const builtins = (await this.fetchBuiltins()).filter(entry => this.currentLanguage?.id === entry.lang);
	return LoadSave.populate(
	unwrap(this.modal).find('.examples'),
	builtins.map(elem => {
	return {
	name: elem.name,
	load: () => this.doLoad(elem),
	};
	})
	);
	}

	private populateLocalStorage() {
	const files = LoadSave.getLocalFiles();
	const keys = Object.keys(files);

	LoadSave.populate(
	unwrap(this.modal).find('.local-storage'),
	keys.map(name => {
	const data = files[name];
	return {
	name: name,
	load: () => {
	this.onLoad(data);
	this.modal?.modal('hide');
	},
	delete: () => {
	this.alertSystem.ask(
	`Delete ${_.escape(name)}?`,
	`Do you want to delete '${_.escape(name)}'?`,
	{
	yes: () => {
	LoadSave.removeLocalFile(name);
	this.populateLocalStorage();
	},
	}
	);
	},
	overwrite: () => {
	this.alertSystem.ask(
	`Overwrite ${_.escape(name)}?`,
	`Do you want to overwrite '${_.escape(name)}'?`,
	{
	yes: () => {
	LoadSave.setLocalFile(name, this.editorText);
	this.populateLocalStorage();
	},
	}
	);
	},
	};
	})
	);
	}

	private populateLocalHistory() {
	LoadSave.populate(
	unwrap(this.modal).find('.local-history'),
	history.sources(unwrap(this.currentLanguage).id).map(data => {
	const dt = new Date(data.dt).toString();
	return {
	name: dt.replace(/\s\(.*\)/, ''),
	load: () => {
	this.onLoad(data.source);
	this.modal?.modal('hide');
	},
	};
	})
	);
	}

	// From https://developers.google.com/web/updates/2014/08/Easier-ArrayBuffer-String-conversion-with-the-Encoding-API
	private static ab2str(buf) {
	const dataView = new DataView(buf);
	// The TextDecoder interface is documented at http://encoding.spec.whatwg.org/#interface-textdecoder
	const decoder = new TextDecoder('utf-8');
	return decoder.decode(dataView);
	}

	private onLocalFile(event: JQuery.ChangeEvent) {
	const files = event.target.files;
	if (files.length !== 0) {
	const file = files[0];
	const reader = new FileReader();
	reader.onload = () => {
	let result: string;
	if (reader.result instanceof ArrayBuffer) {
	result = LoadSave.ab2str(reader.result);
	} else {
	result = reader.result ?? '';
	}
	this.onLoad(result, file.name);
	};
	reader.readAsText(file);
	}
	this.modal?.modal('hide');
	}

	public run(onLoad, editorText, currentLanguage: Language) {
	this.initializeIfNeeded();
	this.populateLocalStorage();
	this.setMinimalOptions(editorText, currentLanguage);
	this.populateLocalHistory();
	this.onLoadCallback = onLoad;
	unwrap(this.modal).find('.local-file').attr('accept', currentLanguage.extensions.join(','));
	this.populateBuiltins().then(() => this.modal?.modal());
	ga.proxy('send', {
	hitType: 'event',
	eventCategory: 'OpenModalPane',
	eventAction: 'LoadSave',
	});
	}

	private onSaveToBrowserStorage() {
	const saveNameValue = unwrapString(this.modal?.find('.save-name').val());
	if (!saveNameValue) {
	this.alertSystem.alert('Save name', 'Invalid save name');
	return;
	}
	const name = `${saveNameValue} (${this.currentLanguage?.name ?? ''})`;
	const doneCallback = () => {
	LoadSave.setLocalFile(name, this.editorText);
	};
	if (name in LoadSave.getLocalFiles()) {
	this.modal?.modal('hide');
	this.alertSystem.ask(
	'Replace current?',
	`Do you want to replace the existing saved file '${_.escape(name)}'?`,
	{yes: doneCallback}
	);
	} else {
	doneCallback();
	this.modal?.modal('hide');
	}
	}

	setMinimalOptions(editorText: string, currentLanguage: Language) {
	this.editorText = editorText;
	this.currentLanguage = currentLanguage;
	this.extension = currentLanguage.extensions[0] \|\| '.txt';
	}

	onSaveToFile(fileEditor?: string) {
	try {
	const fileLang = this.currentLanguage?.name ?? '';
	const name = fileLang && fileEditor !== undefined ? fileLang + ' Editor #' + fileEditor + ' ' : '';
	saveAs(
	new Blob([this.editorText], {type: 'text/plain;charset=utf-8'}),
	'Compiler Explorer ' + name + 'Code' + this.extension
	);
	return true;
	} catch (e) {
	this.alertSystem.notify('Error while saving your code. Use the clipboard instead.', {
	group: 'savelocalerror',
	alertClass: 'notification-error',
	dismissTime: 5000,
	});
	return false;
	}
	}
	}