added :x option for hexa

Author: Sven Ulrich

dist/index.ts

@@ -99,7 +99,7 @@ export class String {
         });
     }
 
-    private static parsePattern(match: 'L' | 'U' | 'd' | 's' | 'n' | string, arg: string | Date | number | any): string {
+    private static parsePattern(match: 'L' | 'U' | 'd' | 's' | 'n' | 'x' | 'X' | string, arg: string | Date | number | any): string {
         switch (match) {
             case 'L': {
                 arg = arg.toLocaleLowerCase();
@@ -152,6 +152,12 @@ export class String {
                 arg = output + (parts.length > 1 ? ',' + parts[1] : '');
                 return arg;
             }
+            case 'x': {
+                return this.decimalToHexString(arg);
+            }
+            case 'X': {
+                return this.decimalToHexString(arg, true)
+            }
             default: {
                 break;
             }
@@ -164,6 +170,11 @@ export class String {
         return arg;
     }
 
+    private static decimalToHexString(number: number, upperCase: boolean = false) {
+        const hexNumber = number.toString(16);
+        return upperCase ? hexNumber.toLocaleUpperCase() : hexNumber;
+    }
+
     private static getDisplayDateFromString(input: string): string {
         let splitted: string[];
         splitted = input.split('-');

package.json

@@ -1,6 +1,6 @@
 {
   "name": "typescript-string-operations",
-  "version": "1.3.2",
+  "version": "1.4.0",
   "description": "Simple lightweight string operation library for Typescript, works with Angular",
   "main": "dist/index.min.js",
   "scripts": {

tests/tests.ts

@@ -183,6 +183,38 @@ describe('String.Format Number Pattern', () => {
                 expect(result).to.equal(expectedValue);
             });
         });
+    
+        describe('hexadecimal', () => {
+            it('number should be converted to hex lowercase', () => {
+                let result = String.Format('{0:x}', 500);
+                expect(result).to.equal('1f4');
+            });
+
+            it('number should be converted to hex uppercase', () => {
+                let result = String.Format('{0:X}', 500);
+                expect(result).to.equal('1F4');
+            });
+
+            it('decimal should be converted to hex lowercase', () => {
+                let result = String.Format('{0:x}', 321.124);
+                expect(result).to.equal('141.1fbe76c8b44');
+            });
+
+            it('decimal should be converted to hex uppercase', () => {
+                let result = String.Format('{0:X}', 321.124);
+                expect(result).to.equal('141.1FBE76C8B44');
+            });
+
+            it('minus decimal should be converted to hex lowercase', () => {
+                let result = String.Format('{0:x}', -321.124);
+                expect(result).to.equal('-141.1fbe76c8b44');
+            });
+
+            it('minus decimal should be converted to hex uppercase', () => {
+                let result = String.Format('{0:X}', -321.124);
+                expect(result).to.equal('-141.1FBE76C8B44');
+            });
+        });
     });
 
 });