Add support of IP addresses (#15)

.gitignore

@@ -21,3 +21,5 @@
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+
+debug.log

.vscode/launch.json

@@ -0,0 +1,15 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "pwa-chrome",
+            "request": "launch",
+            "name": "Launch Chrome against localhost",
+            "url": "http://localhost:3000",
+            "webRoot": "${workspaceFolder}"
+        }
+    ]
+}

src/commands.ts

@@ -2,7 +2,7 @@ import HelpResult from './models/HelpResult';
 import AboutResult from './models/AboutResult';
 import UnknownCommandResult from './models/UnknownCommandResult';
 import ExpressionResult from './models/ExpressionResult';
-import ErrorResult from './models/ErrorResult';
+import {UnhandledErrorResult, ErrorResult} from './models/ErrorResults';
 import WahtsnewResult from './models/WhatsnewResult';
 import StringResult from './models/StringResult';
 import * as expression from './expression/expression';
@@ -10,6 +10,9 @@ import uuid from 'uuid/v4';
 import { CommandInput, CmdShell } from './core/cmd';
 import { ExpressionInput } from './expression/expression-interfaces';
 import AppState from './core/AppState';
+import {ParsingError, IpAddress, ipAddressParser, IpAddressWithSubnetMask, ParsedIpObject} from './ipaddress/ip'
+import IpAddressResult from './models/IpAddressResult';
+import { isGetAccessor, isPrefixUnaryExpression } from 'typescript';
 
 export default {
     initialize (cmd: CmdShell, appState: AppState) {
@@ -32,11 +35,43 @@ export default {
             appState.addCommandResult(new StringResult(c.input, `Debug Mode: ${appState.debugMode}`))
         });            
 
+
+        // Ip Addresses
+        cmd.command({
+            canHandle: (input:string) => ipAddressParser.parse(input) != null,
+            handle: function(c: CommandInput) {
+                var result = ipAddressParser.parse(c.input);
+
+                if(result == null)
+                    return;
+
+                if(result instanceof ParsingError) {
+                    appState.addCommandResult(new ErrorResult(c.input, result.errorMessage));
+                    return;
+                }
+
+                const ipAddresses : IpAddress[] = [];
+                
+                (result as ParsedIpObject[]).forEach(r => {
+                    if(r instanceof IpAddressWithSubnetMask)
+                    {
+                        ipAddresses.push(r.ipAddress);
+                        ipAddresses.push(r.createSubnetMaskIp());
+                    }
+                    else if(r instanceof IpAddress) {
+                        ipAddresses.push(r);
+                    }
+                });
+            
+                appState.addCommandResult(new IpAddressResult(c.input, ipAddresses));
+            }         
+        })
+
+        // Bitwise Expressions
         cmd.command({
             canHandle: (input:string) => expression.parser.canParse(input),
             handle: function(c: CommandInput) {
                 var expr = expression.parser.parse(c.input);
-                appState.toggleDebugMode();
                 appState.addCommandResult(new ExpressionResult(c.input, expr as ExpressionInput));
             }         
         })
@@ -47,6 +82,6 @@ export default {
             handle: (c: CommandInput) => appState.addCommandResult(new UnknownCommandResult(c.input))
         });
 
-        cmd.onError((input: string, err: Error) => appState.addCommandResult(new ErrorResult(input, err)));
+        cmd.onError((input: string, err: Error) => appState.addCommandResult(new UnhandledErrorResult(input, err)));
     }
  }

src/components/DisplayResultView.tsx

@@ -7,11 +7,13 @@ import ExpressionResult from '../models/ExpressionResult';
 import BitwiseOperationExpressionView from './results/expressions/BitwiseOperationExpressionView';
 import WhatsnewResult from '../models/WhatsnewResult';
 import WhatsnewResultView from './results/WhatsNewResultView';
-import ErrorResult from '../models/ErrorResult';
+import {UnhandledErrorResult, ErrorResult} from '../models/ErrorResults';
 import StringResult from '../models/StringResult';
+import IpAddressView from './results/IpAddressView';
 
 import CommandResult from '../models/CommandResult';
 import AppState from '../core/AppState';
+import IpAddressResult from '../models/IpAddressResult';
 
 type DisplayResultProps = {
     content : CommandResult,
@@ -54,12 +56,24 @@ export default class DisplayResult extends React.Component<DisplayResultProps> {
             return <p>{result.value}</p>
         }
 
-        if (result instanceof ErrorResult) {
+        if (result instanceof UnhandledErrorResult) {
             return <div className="result">
                     <div className="error">(X_X) Ooops.. Something ain' right: <strong>{result.error.message}</strong></div>
                </div>
         }
 
+        if (result instanceof ErrorResult) {
+            return <div className="result">
+                    <div className="error">{result.errorMessage}</div>
+               </div>
+        }
+
+        if(result instanceof IpAddressResult) {
+            const ipResult = result as IpAddressResult;
+
+            return <IpAddressView ipAddresses={ipResult.ipAddresses} />
+        }
+
         return <div className="result">
                     <div className="error">¯\_(ツ)_/¯ Sorry, i don&prime;t know what <strong>{this.props.content.input}</strong> is</div>
                </div>

src/components/results/BinaryString.tsx

@@ -3,7 +3,7 @@ import React from 'react';
 export type BinaryStringViewProps = {
     allowFlipBits: boolean;
     binaryString: string;
-    onFlipBit: (input: FlipBitEventArg) => void;
+    onFlipBit?: (input: FlipBitEventArg) => void;
     emphasizeBytes: boolean;
 };
 
@@ -11,6 +11,7 @@ export type FlipBitEventArg = {
     index: number;
     binaryString: string;
     $event: any;
+    newBinaryString: string
 };
 
 export default class BinaryStringView extends React.Component<BinaryStringViewProps> {
@@ -19,13 +20,19 @@ export default class BinaryStringView extends React.Component<BinaryStringViewPr
     }
 
     onBitClick(index: number, e : any) {
-        if(!this.props.allowFlipBits) {
+        if(!this.props.allowFlipBits || !this.props.onFlipBit) {
             return;
         }
 
-        if(this.props.onFlipBit) {
-            this.props.onFlipBit({ index: index, binaryString: this.props.binaryString, $event: e });
+        if(!this.props.onFlipBit) {
+            
         }
+
+        const arr = this.props.binaryString.split('');
+        arr[index] = arr[index] == '0' ? '1' : '0';
+        const newBinaryString = arr.join('');
+
+        this.props.onFlipBit({ index: index, binaryString: this.props.binaryString, $event: e, newBinaryString });        
     }
 
     getChildren() {

src/components/results/IpAddressView.css

@@ -0,0 +1 @@
+.ip-address-info { padding-top: 1em; font-size: 0.85em; vertical-align: middle;}

src/components/results/IpAddressView.tsx

@@ -0,0 +1,78 @@
+import React from 'react';
+import { IpAddress, OctetNumber, getNetworkClass } from '../../ipaddress/ip';
+import formatter from '../../core/formatter'
+import BinaryStringView from './BinaryString';
+import './IpAddressView.css';
+type IpAddressViewProps = {
+    ipAddresses: IpAddress[]
+};
+
+export class IpAddressView extends React.Component<IpAddressViewProps> 
+{
+    
+    render() {
+        if(this.props.ipAddresses.length === 1)
+            return this.renderSingleIp(this.props.ipAddresses[0]);
+        
+        return this.renderMultipleIps();
+    }
+
+    renderMultipleIps() {
+        return <table className="expression">
+            <tbody>
+                {this.props.ipAddresses.map((ip, i) => <tr key={i}>
+                        <td>{ip.toString()}</td>
+                        <td>
+                            {this.bin(ip.firstByte, 1, ip)}.{this.bin(ip.secondByte, 2, ip)}.{this.bin(ip.thirdByte, 3, ip)}.{this.bin(ip.fourthByte, 4, ip)}
+                        </td>
+                    </tr>)}
+            </tbody>
+        </table>
+    }
+
+    renderSingleIp(ip: IpAddress) {
+        return <table className="expression">
+                <thead>
+                    <tr>
+                        <th>{ip.firstByte}</th>
+                        <th>{ip.secondByte}</th>
+                        <th>{ip.thirdByte}</th>
+                        <th>{ip.fourthByte}</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    <tr>
+                        <td>{this.bin(ip.firstByte, 1, ip)}</td>
+                        <td>{this.bin(ip.secondByte, 2, ip)}</td>
+                        <td>{this.bin(ip.thirdByte, 3, ip)}</td>
+                        <td>{this.bin(ip.fourthByte, 4, ip)}</td>
+                    </tr>
+                    <tr>
+                        <td colSpan={2} className="ip-address-info">
+                            <a href="https://www.wikiwand.com/en/Classful_network" target="_blank">Network Class: {getNetworkClass(ip).toUpperCase()}</a>
+                        </td>
+                    </tr>
+                </tbody>
+            </table>;
+    }
+
+    bin(value: number, octetNumber: OctetNumber, ip: IpAddress) {
+        return <BinaryStringView 
+            binaryString={fmt(value)} 
+            key={octetNumber} 
+            emphasizeBytes={false} 
+            allowFlipBits={true} 
+            onFlipBit={e => this.onFlippedBit(e.newBinaryString, octetNumber, ip)} />;
+    }
+    
+    onFlippedBit(binaryString: string, number: OctetNumber, ip : IpAddress) {
+        ip.setOctet(number, parseInt(binaryString, 2));
+        this.forceUpdate();
+    }
+};
+
+function fmt(num: number) : string {
+    return formatter.padLeft(formatter.formatString(num, 'bin'), 8, '0');
+}
+
+export default IpAddressView;

src/index.css

@@ -25,17 +25,17 @@ code { font-size: 1.2em; font-weight: bold; }
 
 .expression .label { font-weight:  bold; padding-right: 5px; text-align: right; }
 .expression .bin { letter-spacing: 3px; }
-.expression .flipable { cursor: pointer; opacity: 1 }
-.expression .flipable:hover { opacity: 0.8 }
 .expression .byte { margin: 0 3px; }
-.expression .flipable { cursor: pointer; opacity: 1 }
-.expression .flipable:hover { opacity: 0.8 }
 .expression-result td { border-top: dotted 1px gray; }
 .expression { font-size: 1.5em; font-family: monospace }
 .expression .prefix { font-weight: normal; display: none; font-size: 0.9em }
 .expression .other { font-size: 0.9em}
 .expression .sign { text-align: right}
 
+.flipable { cursor: pointer; opacity: 1 }
+.flipable { cursor: pointer; opacity: 1 }
+.flipable:hover { opacity: 0.8 }
+
 .hex .prefix { display: inline; }
 
 .help { padding: 10px; }

src/ipaddress/ip.test.ts

@@ -0,0 +1,104 @@
+import {IpAddress, ipAddressParser, getNetworkClass, ParsingError, IpAddressWithSubnetMask, ParsedIpObject} from './ip';
+
+
+describe('parser tests', () => {
+    it('can parse correct ip address', () => {
+        const actual = ipAddressParser.parse('127.1.2.3');
+        expect(actual).not.toBe(null);
+        expect(actual).not.toBeInstanceOf(ParsingError);
+
+        const obj = (actual as ParsedIpObject[])[0];
+        const expected = new IpAddress(127, 1, 2, 3);
+        expect(obj).not.toBe(null);
+        expect(obj.toString()).toBe(expected.toString());
+    });
+
+    it('cannot parse incorrect ip address', () => {
+        expect(ipAddressParser.parse('abc')).toBe(null);
+        expect(ipAddressParser.parse('')).toBe(null);
+    });
+
+    it('should parse invalid ip address', () => {
+        expect(ipAddressParser.parse('256.0.0.0')).toBeInstanceOf(ParsingError);
+        expect(ipAddressParser.parse('0.256.0.0')).toBeInstanceOf(ParsingError);
+        expect(ipAddressParser.parse('0.0.256.0')).toBeInstanceOf(ParsingError);
+        expect(ipAddressParser.parse('0.0.0.256')).toBeInstanceOf(ParsingError);
+        expect(ipAddressParser.parse('0.0.0.255 asd')).toBeInstanceOf(ParsingError);
+        expect(ipAddressParser.parse('0.0.0.255/99')).toBeInstanceOf(ParsingError);
+    });
+
+    it('parses correct ip and subnet mask', () => {
+        const actual = ipAddressParser.parse('127.0.0.1/24');
+        
+        expect(actual).not.toBe(null);
+        expect(actual).not.toBeInstanceOf(ParsingError);
+
+        const obj = (actual as ParsedIpObject[])[0];
+        expect(obj).toBeInstanceOf(IpAddressWithSubnetMask);
+        expect(obj!.toString()).toBe('127.0.0.1/24');
+        expect((obj as IpAddressWithSubnetMask).maskBits).toBe(24);
+    });
+
+    it('parses list of ip addresses', () => {
+        const actual = ipAddressParser.parse('127.0.0.1/24 255.255.1.1');
+        
+        expect(actual).not.toBe(null);
+        expect(actual).not.toBeInstanceOf(ParsingError);
+
+        const first = (actual as ParsedIpObject[])[0];
+        expect(first).toBeInstanceOf(IpAddressWithSubnetMask);
+        expect(first!.toString()).toBe('127.0.0.1/24');
+        expect((first as IpAddressWithSubnetMask).maskBits).toBe(24);
+
+        const second = (actual as ParsedIpObject[])[1];
+        expect(second).toBeInstanceOf(IpAddress);
+        expect(second!.toString()).toBe('255.255.1.1');
+    });
+});
+
+describe('getNetworkClass tests', () => {
+    it('detects class a', () => {
+        expect(getNetworkClass(new IpAddress(1, 0, 0, 0))).toBe('a');
+        expect(getNetworkClass(new IpAddress(55, 0, 0, 0))).toBe('a');
+        expect(getNetworkClass(new IpAddress(97, 0, 0, 0))).toBe('a');
+        expect(getNetworkClass(new IpAddress(127, 0, 0, 0))).toBe('a');
+    });
+
+    it('detects class b', () => {
+        expect(getNetworkClass(new IpAddress(128, 0, 0, 0))).toBe('b');
+        expect(getNetworkClass(new IpAddress(134, 0, 0, 0))).toBe('b');
+        expect(getNetworkClass(new IpAddress(180, 0, 0, 0))).toBe('b');
+        expect(getNetworkClass(new IpAddress(191, 0, 0, 0))).toBe('b');
+    });
+
+    it('detects class c', () => {
+        expect(getNetworkClass(new IpAddress(192, 0, 0, 0))).toBe('c');
+        expect(getNetworkClass(new IpAddress(218, 0, 0, 0))).toBe('c');
+        expect(getNetworkClass(new IpAddress(223, 0, 0, 0))).toBe('c');
+    });
+
+    it('detects class d', () => {
+        expect(getNetworkClass(new IpAddress(224, 0, 0, 0))).toBe('d');
+        expect(getNetworkClass(new IpAddress(234, 0, 0, 0))).toBe('d');
+        expect(getNetworkClass(new IpAddress(239, 0, 0, 0))).toBe('d');
+    });
+
+    it('detects class e', () => {
+        expect(getNetworkClass(new IpAddress(240, 0, 0, 0))).toBe('e');
+        expect(getNetworkClass(new IpAddress(241, 0, 0, 0))).toBe('e');
+        expect(getNetworkClass(new IpAddress(255, 0, 0, 0))).toBe('e');
+    });
+});
+
+describe('IpAddressWithSubnetMask tests', () => {
+
+    it('creates subnetmask ip', () => {
+        const ip = new IpAddress(127, 0, 0, 1);
+        expect(new IpAddressWithSubnetMask(ip, 1).createSubnetMaskIp().toString()).toBe('128.0.0.0');
+        expect(new IpAddressWithSubnetMask(ip, 8).createSubnetMaskIp().toString()).toBe('255.0.0.0');
+        expect(new IpAddressWithSubnetMask(ip, 10).createSubnetMaskIp().toString()).toBe('255.192.0.0');
+        expect(new IpAddressWithSubnetMask(ip, 20).createSubnetMaskIp().toString()).toBe('255.255.240.0');
+        expect(new IpAddressWithSubnetMask(ip, 30).createSubnetMaskIp().toString()).toBe('255.255.255.252');
+        expect(new IpAddressWithSubnetMask(ip, 32).createSubnetMaskIp().toString()).toBe('255.255.255.255');
+    });
+});

src/ipaddress/ip.ts

@@ -0,0 +1,183 @@
+import formatter from '../core/formatter';
+
+
+export type OctetNumber = 1 | 2 | 3 | 4;
+export type NetworkClass = 'a' | 'b' | 'c' | 'd' | 'e';
+export type ParsedIpObject = IpAddress | IpAddressWithSubnetMask;
+
+const ipAddressParser = {
+    parse: function(input: string) : ParsedIpObject[] | ParsingError | null {
+
+        const matches = this.getMaches(input);
+        const correctInputs = matches.filter(m => m.matches != null);
+        const incorrectInputs = matches.filter(m => m.matches == null);
+        
+        if(correctInputs.length == 0)
+            return null;
+
+        if(incorrectInputs.length > 0) {
+                return new ParsingError(`Value(s) ${incorrectInputs.map(v => v.input).join(',')} was not recognized as valid ip address or ip address with a subnet mask`);
+        }
+
+        const parsedObjects = matches.map(m => this.parseSingle(m.matches!, m.input));
+        const parsingErrors = parsedObjects.filter(p => p instanceof ParsingError);
+
+        if(parsingErrors.length > 0) {
+            return parsingErrors[0] as ParsingError;
+        }
+
+        return parsedObjects as ParsedIpObject[];
+        
+    },
+
+    getMaches(input : string) : { matches: RegExpExecArray | null, input: string }[] {
+
+        return input.
+            replace(/[\t\s]+/g, ' ')
+                .split(' ')
+                .filter(s => s.length>0)
+                .map(s => {
+                    const ipV4Regex = /^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})(\/\d+)?$/;
+                    const matches = ipV4Regex.exec(s);
+                    
+                    if(matches == null || matches.length === 0)
+                        return {matches: null, input: s};
+                    
+                    return {matches, input: s};
+                });
+    },
+
+    parseSingle(matches : RegExpExecArray, input: string) : ParsedIpObject | ParsingError {
+        const invalid = (n: number) => n < 0 || n > 255;
+    
+        const first = parseInt(matches[1]);
+        const second = parseInt(matches[2]);
+        const third = parseInt(matches[3]);
+        const fourth = parseInt(matches[4]);
+
+        if(invalid(first) || invalid(second) || invalid(third) || invalid(fourth))
+            return new ParsingError(`${input} value doesn't fall within the valid range of the IP address space`);
+
+        const ipAddress = new IpAddress(first, second, third, fourth);
+
+        if(matches[5]) {
+            const maskPart = matches[5].substr(1);
+            const maskBits = parseInt(maskPart);
+
+            if(maskBits > 32) {
+                return new ParsingError(`Subnet mask value in ${input} is out of range`);
+            }
+
+            return new IpAddressWithSubnetMask(ipAddress, maskBits);
+        }
+
+        return ipAddress;
+    }
+}
+
+export class ParsingError {
+    errorMessage: string;
+    constructor(message: string) {
+        this.errorMessage = message;
+    }
+}
+
+export class IpAddressWithSubnetMask {
+    maskBits: number;
+    ipAddress: IpAddress;
+    
+    constructor(ipAddress : IpAddress, maskBits : number) {
+        this.ipAddress = ipAddress;
+        this.maskBits = maskBits;
+    }
+
+    toString() {
+        return `${this.ipAddress.toString()}/${this.maskBits}`;
+    }
+
+    createSubnetMaskIp() : IpAddress {
+
+        const mask = (bits: number) => 255<<(8-bits)&255;
+
+        if(this.maskBits <= 8) {
+            return new IpAddress(mask(this.maskBits), 0, 0, 0);
+        }
+        else if(this.maskBits <= 16) {
+            return new IpAddress(255, mask(this.maskBits-8), 0, 0);
+        }
+        else if(this.maskBits <= 24) {
+            return new IpAddress(255, 255, mask(this.maskBits-16), 0);
+        }
+        else {
+            return new IpAddress(255, 255, 255, mask(this.maskBits-24));
+        }
+    }
+}
+
+export class IpAddress {
+
+    firstByte : number;
+    secondByte: number;
+    thirdByte : number;
+    fourthByte: number
+
+    constructor(firstByte : number, secondByte: number, thirdByte : number, fourthByte: number) {
+        this.firstByte = firstByte;
+        this.secondByte = secondByte;
+        this.thirdByte = thirdByte;
+        this.fourthByte = fourthByte;
+    }
+
+    toString() : string {
+        return `${this.firstByte}.${this.secondByte}.${this.thirdByte}.${this.fourthByte}`;
+    }
+
+    setOctet(octet: OctetNumber, value : number)  {
+        switch(octet) {
+            case 1:
+                this.firstByte = value;
+                break;
+            case 2:
+                this.secondByte = value;
+                break;
+            case 3:
+                this.thirdByte = value;
+                break;
+            case 4:
+                this.fourthByte = value;
+                break;
+        }
+    }
+}
+
+
+
+const getNetworkClass = function (ipAddress: IpAddress) : NetworkClass {
+    const byte = ipAddress.firstByte;
+    const bineryRep = formatter.formatString(ipAddress.firstByte, 'bin');
+
+    const firstBitOne = (byte & 128) === 128;
+    const firstBitZero = (byte & 128) === 0;
+    const secondBitOne = (byte & 64) === 64;
+
+    const thirdBitOne = (byte & 32) === 32;
+    const thirdBitZero = (byte & 32) === 0;
+
+    const forthBitZero = (byte & 16) === 0;
+    const forthBitOne = (byte & 16) === 16;
+
+    // e: 1111
+
+    if(firstBitOne && secondBitOne && thirdBitOne && forthBitOne)
+        return 'e';
+
+    if(firstBitOne && secondBitOne && thirdBitOne && forthBitZero) // Start bits: 1110;
+        return 'd';
+
+    if(firstBitOne && secondBitOne && thirdBitZero) // Start bits: 110;
+        return 'c';
+   
+    return firstBitOne ? 'b' : 'a';
+};
+
+export {ipAddressParser, getNetworkClass};

src/models/ErrorResult.ts

@@ -1,9 +0,0 @@
-import CommandResult from './CommandResult';
-
-export default class ErrorResult extends CommandResult {
-    error: Error;
-    constructor(input: string, error : Error) {
-        super(input);
-        this.error = error;
-    }
-}

src/models/ErrorResults.ts

@@ -0,0 +1,17 @@
+import CommandResult from './CommandResult';
+
+export class UnhandledErrorResult extends CommandResult {
+    error: Error;
+    constructor(input: string, error : Error) {
+        super(input);
+        this.error = error;
+    }
+}
+
+export class ErrorResult extends CommandResult {
+    errorMessage: string;
+    constructor(input: string, errorMessage : string) {
+        super(input);
+        this.errorMessage = errorMessage;
+    }
+}

src/models/IpAddressResult.ts

@@ -0,0 +1,10 @@
+import { IpAddress, ipAddressParser, IpAddressWithSubnetMask } from '../ipaddress/ip';
+import CommandResult from './CommandResult';
+
+export default class IpAddressResult extends CommandResult {
+    ipAddresses: IpAddress[];
+    constructor(input: string, ipAddresses: IpAddress[]) {
+        super(input);
+        this.ipAddresses = ipAddresses;
+    }
+}

todo.txt

@@ -1,2 +1,5 @@
 - Bug: ~1|~2
 - add Firefox tests
+- support for list of ip addresses
+- support of subnet masks e.g. 127.0.0.1/24
+