cc-terminal
Version:
AngularJs Web based terminal module
191 lines • 24.4 kB
JavaScript
import { Injectable } from '@angular/core';
import { Observable, Subject } from 'rxjs';
import { filter, map, takeUntil } from 'rxjs/operators';
import cloneDeep from 'lodash.clonedeep';
import * as i0 from "@angular/core";
export class CcTerminalService {
constructor() {
this.ngUnsubscribe = new Subject(); // https://stackoverflow.com/questions/38008334/angular-rxjs-when-should-i-unsubscribe-from-subscription/41177163#41177163
this.event = new Subject();
this.readyStore();
}
fetch(url) {
return Observable.create(observer => {
// angular http lib does not support arrayBuffer hence XMLHTTP
const req = new XMLHttpRequest();
req.open('get', url, true);
req.responseType = 'arraybuffer';
req.onreadystatechange = function () {
if (req.readyState === 4 && req.status === 200) {
observer.next(req.response);
observer.complete();
}
};
req.send();
});
}
// calls the next event with listener id on listening component and data to send
broadcast(key, data) {
this.event.next({ key, data });
}
/**
* @description - This function will register to execute the store whenever store is ready.
*/
readyStore() {
this.on('store-ready').subscribe(_store => {
this.store = _store;
this.store.state$.subscribe(state => {
console.log('StoreReady: In Service:', state);
});
});
}
// filters through active observers and maps data to a matching observer
on(key) {
return this.event.asObservable().pipe(filter((event) => event.key === key), map(event => event.data));
}
/**
* @description - Get the Current prompt
*/
getPrompt() {
return this.prompt;
}
/**
* @description - Get the Current store
*/
getStore() {
console.log('here');
return this.store;
}
initPrompt(config) {
this.prompt = {};
let _user, _path, _userPathSeparator, _promptEnd;
config = config ? config.promptConfiguration : null;
const build = () => {
this.prompt.text = _user + _userPathSeparator + _path + _promptEnd;
};
this.prompt.reset = () => {
_user = config && config.user != null ? (config.user || '') : 'anon';
_path = config && config.path != null ? (config.path || '') : '\\';
_userPathSeparator = config && config.separator != null ? (config.separator || '') : '@';
_promptEnd = config && config.end != null ? (config.end || '') : ':>';
build();
};
this.prompt.text = '';
this.prompt.reset();
return this.prompt;
}
/**
* @description - This function will help you to interpret your commands.
* @param cmd - command
*/
interpret(cmd) {
const prompt = this.getPrompt();
// this.store.state$.subscribe(state => { console.log(state); });
const command = (cmd.command || '').split(' ');
let _command = null;
this.store.state$.pipe(takeUntil(this.ngUnsubscribe)).subscribe(state => {
_command = cloneDeep(state.commands.filter(// Remove the reference of command by making copy, to avoid modifying the command state
(item) => {
return item.name === command[0];
})[0] || null);
});
if (_command && _command.name) {
if (_command.callback && typeof _command.callback === 'function') {
_command.callback();
}
switch (_command.name) {
case 'help':
_command.details.result = _command.details.result.map((_result) => {
if (_result && _result.text && typeof _result.text === 'function') {
let text = _result.text(this.store.state.commands.map((c) => { return c.name; }));
return { ..._result, text };
}
else {
return _result;
}
});
break;
default:
_command.details.result = _command.details.result.map((_result) => {
if (_result && _result.text && typeof _result.text === 'function') {
let text = (_result.text()).toString();
return { ..._result, text };
}
else {
return _result;
}
});
}
_command.details.result.splice(0, 0, { text: prompt.text + cmd.command });
console.log('Final:', _command);
this.broadcast('terminal-output', _command);
}
else {
let result = '';
try {
result = eval(cmd.command); // eval.call(null, cmd.command);
if (result !== undefined) {
this.broadcast('terminal-output', {
details: {
output: true,
result: [
{ text: prompt.text + cmd.command, },
{ text: '' + result },
],
breakLine: true,
}
});
}
}
catch (e) {
this.broadcast('terminal-output', {
details: {
output: true,
result: [
{ text: prompt.text + cmd.command, },
{ text: '' + e, css: { color: 'red' } },
],
breakLine: true,
}
});
}
}
/**
* @description - Regex for exact match command
* note: we can add this in constants
* TODO: We can design the exact match regex based command also.
*/
const regex = {
alert: /^alert$/,
};
// Example of how to work with regex based command
// else if (regex.alert.test(command[0])) {
// this.broadcast('terminal-output', {
// details: {
// output: true,
// result: [
// { text: prompt.text + cmd.command, },
// { text: '' + e, css: { color: 'red' } }],
// breakLine: true,
// }
// });
// command.splice(0, 1); // Remove command from command string
// alert(command.join(' '));
// console.log(command);
// }
}
ngOnDestroy() {
// Clear Storage allocation of memory.
this.ngUnsubscribe.next(true);
this.ngUnsubscribe.complete();
}
}
/** @nocollapse */ CcTerminalService.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "13.3.3", ngImport: i0, type: CcTerminalService, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
/** @nocollapse */ CcTerminalService.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "13.3.3", ngImport: i0, type: CcTerminalService, providedIn: 'root' });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "13.3.3", ngImport: i0, type: CcTerminalService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}], ctorParameters: function () { return []; } });
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{ Injectable, OnDestroy } from '@angular/core';\nimport { Observable, Subject } from 'rxjs';\nimport { filter, map, takeUntil } from 'rxjs/operators';\nimport { CommandStore } from './cc-terminal-command-store';\nimport cloneDeep from 'lodash.clonedeep';\n\ninterface BroadcastEvent {\n  key: any;\n  data?: any;\n}\n\n@Injectable({\n  providedIn: 'root'\n})\nexport class CcTerminalService implements OnDestroy {\n  private ngUnsubscribe = new Subject<boolean>(); // https://stackoverflow.com/questions/38008334/angular-rxjs-when-should-i-unsubscribe-from-subscription/41177163#41177163\n  prompt: any;\n  public store: CommandStore;\n  private event: Subject<BroadcastEvent>;\n\n  constructor() {\n    this.event = new Subject<BroadcastEvent>();\n    this.readyStore();\n  }\n\n  fetch(url: string) {\n\n    return Observable.create(observer => {\n      // angular http lib does not support arrayBuffer hence XMLHTTP\n      const req = new XMLHttpRequest();\n      req.open('get', url, true);\n      req.responseType = 'arraybuffer';\n      req.onreadystatechange = function () {\n        if (req.readyState === 4 && req.status === 200) {\n          observer.next(req.response);\n          observer.complete();\n        }\n      };\n      req.send();\n    });\n  }\n\n  // calls the next event with listener id on listening component and data to send\n  broadcast(key: any, data?: any) {\n    this.event.next({ key, data });\n  }\n\n  /**\n   * @description - This function will register to execute the store whenever store is ready.\n   */\n  readyStore() {\n    this.on<any>('store-ready').subscribe(_store => {\n      this.store = _store;\n      this.store.state$.subscribe(state => {\n        console.log('StoreReady: In Service:', state);\n      });\n    });\n  }\n\n  // filters through active observers and maps data to a matching observer\n  on<T>(key: any): Observable<T> {\n    return this.event.asObservable().pipe(filter((event) => event.key === key), map(event => <T>event.data));\n  }\n\n  /**\n   * @description - Get the Current prompt\n   */\n  public getPrompt() {\n    return this.prompt;\n  }\n\n  /**\n   * @description - Get the Current store\n   */\n  public getStore() {\n    console.log('here');\n    return this.store;\n  }\n\n  public initPrompt(config: any) {\n    this.prompt = {};\n    let _user: any, _path: any, _userPathSeparator: any, _promptEnd: any;\n    config = config ? config.promptConfiguration : null;\n    const build = () => {\n      this.prompt.text = _user + _userPathSeparator + _path + _promptEnd;\n    };\n    this.prompt.reset = () => {\n      _user = config && config.user != null ? (config.user || '') : 'anon';\n      _path = config && config.path != null ? (config.path || '') : '\\\\';\n      _userPathSeparator = config && config.separator != null ? (config.separator || '') : '@';\n      _promptEnd = config && config.end != null ? (config.end || '') : ':>';\n      build();\n    };\n    this.prompt.text = '';\n    this.prompt.reset();\n    return this.prompt;\n  }\n\n\n  /**\n   * @description - This function will help you to interpret your commands.\n   * @param cmd - command\n   */\n  public interpret(cmd: any) {\n    const prompt = this.getPrompt();\n    // this.store.state$.subscribe(state => { console.log(state); });\n    const command = (cmd.command || '').split(' ');\n    let _command = null;\n    this.store.state$.pipe(takeUntil(this.ngUnsubscribe)).subscribe(state => {\n      _command = cloneDeep(state.commands.filter( // Remove the reference of command by making copy, to avoid modifying the command state\n        (item) => {\n          return item.name === command[0];\n        })[0] || null);\n    });\n    if (_command && _command.name) {\n      if (_command.callback && typeof _command.callback === 'function') {\n        _command.callback();\n      }\n      switch (_command.name) {\n        case 'help':\n          _command.details.result = _command.details.result.map((_result) => {\n            if (_result && _result.text && typeof _result.text === 'function') {\n              let text = _result.text(this.store.state.commands.map((c) => { return c.name; }));\n              return { ..._result, text };\n            } else {\n              return _result;\n            }\n          });\n          break;\n        default:\n          _command.details.result = _command.details.result.map((_result) => {\n            if (_result && _result.text && typeof _result.text === 'function') {\n              let text = (_result.text()).toString();\n              return { ..._result, text };\n            } else {\n              return _result;\n            }\n          });\n      }\n      _command.details.result.splice(0, 0, { text: prompt.text + cmd.command });\n      console.log('Final:', _command);\n      this.broadcast('terminal-output', _command);\n    } else {\n      let result = '';\n      try {\n        result = eval(cmd.command); // eval.call(null, cmd.command);\n        if (result !== undefined) {\n          this.broadcast('terminal-output', {\n            details: {\n              output: true,\n              result: [\n                { text: prompt.text + cmd.command, },\n                { text: '' + result },\n              ],\n              breakLine: true,\n            }\n          });\n        }\n      } catch (e) {\n        this.broadcast('terminal-output', {\n          details: {\n            output: true,\n            result: [\n              { text: prompt.text + cmd.command, },\n              { text: '' + e, css: { color: 'red' } },\n            ],\n            breakLine: true,\n          }\n        });\n      }\n    }\n\n    /**\n     * @description - Regex for exact match command\n     *   note: we can add this in constants\n     *  TODO: We can design the exact match regex based command also.\n     */\n    const regex = { // We can design the exact match regex based command also.\n      alert: /^alert$/,\n    };\n\n    // Example of how to work with regex based command\n    // else if (regex.alert.test(command[0])) {\n    // this.broadcast('terminal-output', {\n    //   details: {\n    //   output: true,\n    //   result: [\n    //      { text: prompt.text + cmd.command, },\n    //      { text: '' + e, css: { color: 'red' } }],\n    //     breakLine: true,\n    //   }\n    // });\n    //   command.splice(0, 1); // Remove command from command string\n    //   alert(command.join(' '));\n    //   console.log(command);\n    // }\n  }\n\n  ngOnDestroy() {\n    // Clear Storage allocation of memory.\n    this.ngUnsubscribe.next(true);\n    this.ngUnsubscribe.complete();\n  }\n\n}\n"]}