From b09b27b6b439c2f24fd87c96334938030aadad2e Mon Sep 17 00:00:00 2001 From: Jithil P Ponnan Date: Mon, 2 Dec 2019 12:12:13 +0530 Subject: [PATCH] feat(common): camelcase and kebabcase pipes --- packages/common/src/common.ts | 2 +- .../common/src/pipes/case_conversion_pipes.ts | 86 +++++++++++++++++-- packages/common/src/pipes/index.ts | 6 +- .../test/pipes/case_conversion_pipes_spec.ts | 43 +++++++++- .../common/pipes/ts/camelkebab_pipe.ts | 28 ++++++ packages/examples/common/pipes/ts/module.ts | 6 +- 6 files changed, 158 insertions(+), 13 deletions(-) create mode 100644 packages/examples/common/pipes/ts/camelkebab_pipe.ts diff --git a/packages/common/src/common.ts b/packages/common/src/common.ts index fa37614273d6ac..ed2614c7638ef3 100644 --- a/packages/common/src/common.ts +++ b/packages/common/src/common.ts @@ -22,7 +22,7 @@ export {parseCookieValue as ɵparseCookieValue} from './cookie'; export {CommonModule} from './common_module'; export {NgClass, NgClassBase, NgForOf, NgForOfContext, NgIf, NgIfContext, NgPlural, NgPluralCase, NgStyle, NgStyleBase, NgSwitch, NgSwitchCase, NgSwitchDefault, NgTemplateOutlet, NgComponentOutlet} from './directives/index'; export {DOCUMENT} from './dom_tokens'; -export {AsyncPipe, DatePipe, I18nPluralPipe, I18nSelectPipe, JsonPipe, LowerCasePipe, CurrencyPipe, DecimalPipe, PercentPipe, SlicePipe, UpperCasePipe, TitleCasePipe, KeyValuePipe, KeyValue} from './pipes/index'; +export {AsyncPipe, DatePipe, I18nPluralPipe, I18nSelectPipe, JsonPipe, LowerCasePipe, CurrencyPipe, DecimalPipe, PercentPipe, SlicePipe, UpperCasePipe, TitleCasePipe, KeyValuePipe, KeyValue, CamelCasePipe, KebabCasePipe} from './pipes/index'; export {PLATFORM_BROWSER_ID as ɵPLATFORM_BROWSER_ID, PLATFORM_SERVER_ID as ɵPLATFORM_SERVER_ID, PLATFORM_WORKER_APP_ID as ɵPLATFORM_WORKER_APP_ID, PLATFORM_WORKER_UI_ID as ɵPLATFORM_WORKER_UI_ID, isPlatformBrowser, isPlatformServer, isPlatformWorkerApp, isPlatformWorkerUi} from './platform_id'; export {VERSION} from './version'; export {ViewportScroller, NullViewportScroller as ɵNullViewportScroller} from './viewport_scroller'; diff --git a/packages/common/src/pipes/case_conversion_pipes.ts b/packages/common/src/pipes/case_conversion_pipes.ts index 3f60d852e58795..ec2be21793b974 100644 --- a/packages/common/src/pipes/case_conversion_pipes.ts +++ b/packages/common/src/pipes/case_conversion_pipes.ts @@ -6,14 +6,16 @@ * found in the LICENSE file at https://angular.io/license */ -import {Pipe, PipeTransform} from '@angular/core'; -import {invalidPipeArgumentError} from './invalid_pipe_argument_error'; +import { Pipe, PipeTransform } from '@angular/core'; +import { invalidPipeArgumentError } from './invalid_pipe_argument_error'; /** * Transforms text to all lower case. * - * @see `UpperCasePipe` * @see `TitleCasePipe` + * @see `CamelCasePipe` + * @see `UpperCasePipe` + * @see `KebabCasePipe` * @usageNotes * * The following example defines a view that allows the user to enter @@ -24,7 +26,7 @@ import {invalidPipeArgumentError} from './invalid_pipe_argument_error'; * @ngModule CommonModule * @publicApi */ -@Pipe({name: 'lowercase'}) +@Pipe({ name: 'lowercase' }) export class LowerCasePipe implements PipeTransform { /** * @param value The string to transform to lower case. @@ -48,7 +50,7 @@ export class LowerCasePipe implements PipeTransform { // const unicodeWordMatch = - 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/** * Transforms text to title case. @@ -57,7 +59,9 @@ const unicodeWordMatch = * Words are delimited by any whitespace character, such as a space, tab, or line-feed character. * * @see `LowerCasePipe` + * @see `CamelCasePipe` * @see `UpperCasePipe` + * @see `KebabCasePipe` * * @usageNotes * The following example shows the result of transforming various strings into title case. @@ -67,7 +71,7 @@ const unicodeWordMatch = * @ngModule CommonModule * @publicApi */ -@Pipe({name: 'titlecase'}) +@Pipe({ name: 'titlecase' }) export class TitleCasePipe implements PipeTransform { /** * @param value The string to transform to title case. @@ -79,7 +83,7 @@ export class TitleCasePipe implements PipeTransform { } return value.replace( - unicodeWordMatch, (txt => txt[0].toUpperCase() + txt.substr(1).toLowerCase())); + unicodeWordMatch, (txt => txt[0].toUpperCase() + txt.substr(1).toLowerCase())); } } @@ -87,11 +91,12 @@ export class TitleCasePipe implements PipeTransform { * Transforms text to all upper case. * @see `LowerCasePipe` * @see `TitleCasePipe` - * + * @see `CamelCasePipe` + * @see `KebabCasePipe` * @ngModule CommonModule * @publicApi */ -@Pipe({name: 'uppercase'}) +@Pipe({ name: 'uppercase' }) export class UpperCasePipe implements PipeTransform { /** * @param value The string to transform to upper case. @@ -104,3 +109,66 @@ export class UpperCasePipe implements PipeTransform { return value.toUpperCase(); } } + +/** + * Transforms text to all camel case. + * + * @see `LowerCasePipe` + * @see `TitleCasePipe` + * @see `UpperCasePipe` + * @see `KebabCasePipe` + * + * @ngModule CommonModule + * @publicApi + */ + +@Pipe({ name: 'camelcase' }) +export class CamelCasePipe implements PipeTransform { + /** + * @param value The string to transform to camelCase + * @param separator The char to split the words for camelCase. If no separator provided, by defualt space will be used to split the words. + * + */ + transform(value: string, separator?: string): string { + if (!value) return value; + if (typeof value !== 'string') { + throw invalidPipeArgumentError(CamelCasePipe, value); + } + const words = value.split(separator ? separator : ' '); + const camelCaseWords = words.map((word, index) => { + return index === 0 ? word.toLowerCase() : + word[0].toUpperCase() + word.substr(1).toLowerCase(); + }); + return camelCaseWords.join(''); + } +} + +/** + * Transforms text to all kebab-case. + * + * @see `LowerCasePipe` + * @see `TitleCasePipe` + * @see `UpperCasePipe` + * @see `CamelCasePipe` + * + * @ngModule CommonModule + * @publicApi + */ + +@Pipe({ name: 'kebabCase' }) +export class KebabCasePipe implements PipeTransform { + /** + * @param value The string to transform to kebab-case + * @param separator The char to split the words for kebabCase. If no separator provided, by defualt space will be used to split the words. + * + */ + transform(value: string, separator?: string): string { + if (!value) return value; + if (typeof value !== 'string') { + throw invalidPipeArgumentError(KebabCasePipe, value); + } + const words = value.split(separator ? separator : ' '); + const lowerCaseWords = words.map((word) => word.toLowerCase()); + return lowerCaseWords.join('-'); + } +} diff --git a/packages/common/src/pipes/index.ts b/packages/common/src/pipes/index.ts index 9dc1e8d10a2964..246f1076e6e746 100644 --- a/packages/common/src/pipes/index.ts +++ b/packages/common/src/pipes/index.ts @@ -12,7 +12,7 @@ * This module provides a set of common Pipes. */ import {AsyncPipe} from './async_pipe'; -import {LowerCasePipe, TitleCasePipe, UpperCasePipe} from './case_conversion_pipes'; +import {CamelCasePipe, KebabCasePipe, LowerCasePipe, TitleCasePipe, UpperCasePipe} from './case_conversion_pipes'; import {DatePipe} from './date_pipe'; import {I18nPluralPipe} from './i18n_plural_pipe'; import {I18nSelectPipe} from './i18n_select_pipe'; @@ -36,6 +36,8 @@ export { SlicePipe, TitleCasePipe, UpperCasePipe, + CamelCasePipe, + KebabCasePipe, }; @@ -56,4 +58,6 @@ export const COMMON_PIPES = [ I18nPluralPipe, I18nSelectPipe, KeyValuePipe, + CamelCasePipe, + KebabCasePipe, ]; diff --git a/packages/common/test/pipes/case_conversion_pipes_spec.ts b/packages/common/test/pipes/case_conversion_pipes_spec.ts index 22458d785508e2..d2aa30d7d8cb84 100644 --- a/packages/common/test/pipes/case_conversion_pipes_spec.ts +++ b/packages/common/test/pipes/case_conversion_pipes_spec.ts @@ -6,7 +6,8 @@ * found in the LICENSE file at https://angular.io/license */ -import {LowerCasePipe, TitleCasePipe, UpperCasePipe} from '@angular/common'; +import {CamelCasePipe, LowerCasePipe, TitleCasePipe, UpperCasePipe} from '@angular/common'; +import {KebabCasePipe} from '@angular/common/src/pipes/case_conversion_pipes'; { describe('LowerCasePipe', () => { @@ -85,4 +86,44 @@ import {LowerCasePipe, TitleCasePipe, UpperCasePipe} from '@angular/common'; it('should not support other objects', () => { expect(() => pipe.transform({})).toThrowError(); }); }); + + describe('CamelCasePipe', () => { + let pipe: CamelCasePipe; + + beforeEach(() => { pipe = new CamelCasePipe(); }); + + it('should return camelcase', () => { expect(pipe.transform('foo bar')).toEqual('fooBar'); }); + + it('should camelcase when there is a new value', + () => { expect(pipe.transform('foo bar')).toEqual('fooBar'); }); + + it('should camelcase when there is a new value', + () => { expect(pipe.transform('foo-bar', '-')).toEqual('fooBar'); }); + + it('should camelcase when there is a new value', + () => { expect(pipe.transform('foo*bar', '*')).toEqual('fooBar'); }); + + it('should not support other objects', + () => { expect(() => pipe.transform({})).toThrowError(); }); + }); + + describe('KebabCasePipe', () => { + let pipe: KebabCasePipe; + + beforeEach(() => { pipe = new KebabCasePipe(); }); + + it('should return kebabCase', () => { expect(pipe.transform('foo bar')).toEqual('foo-bar'); }); + + it('should kebabCase when there is a new value', + () => { expect(pipe.transform('foo bar')).toEqual('foo-bar'); }); + + it('should kebabCase when there is a new value', + () => { expect(pipe.transform('FOO-BAR', '-')).toEqual('foo-bar'); }); + + it('should kebabCase when there is a new value', + () => { expect(pipe.transform('foo*bar', '*')).toEqual('foo-bar'); }); + + it('should not support other objects', + () => { expect(() => pipe.transform({})).toThrowError(); }); + }); } diff --git a/packages/examples/common/pipes/ts/camelkebab_pipe.ts b/packages/examples/common/pipes/ts/camelkebab_pipe.ts new file mode 100644 index 00000000000000..a4087b812242a5 --- /dev/null +++ b/packages/examples/common/pipes/ts/camelkebab_pipe.ts @@ -0,0 +1,28 @@ +/** + * @license + * Copyright Google Inc. All Rights Reserved. + * + * Use of this source code is governed by an MIT-style license that can be + * found in the LICENSE file at https://angular.io/license + */ + +import { Component } from '@angular/core'; + +// #docregion CamelKebabPipe +@Component({ + selector: 'camelkebab-pipe', + template: `
+ Type some texts in to the below textbox. Also input a separator in the separator char box if require. + + +

In camelcase: 

'{{value | camelcase: separator}}'
+

In uppercase: 

'{{value | kebabCase: separator}}'
+
` +}) +export class CamelKebabPipeComponent { + value: string = ''; + separator: string = ''; + change(value: string) { this.value = value; } + changeSeparator(value: string) { this.separator = value; } +} +// #enddocregion diff --git a/packages/examples/common/pipes/ts/module.ts b/packages/examples/common/pipes/ts/module.ts index 5600dda996e611..d0ebef6441ec78 100644 --- a/packages/examples/common/pipes/ts/module.ts +++ b/packages/examples/common/pipes/ts/module.ts @@ -20,6 +20,7 @@ import {DeprecatedNumberPipeComponent, NumberPipeComponent} from './number_pipe' import {DeprecatedPercentPipeComponent, PercentPipeComponent} from './percent_pipe'; import {SlicePipeListComponent, SlicePipeStringComponent} from './slice_pipe'; import {TitleCasePipeComponent} from './titlecase_pipe'; +import { CamelKebabPipeComponent } from './camelkebab_pipe'; @Component({ selector: 'example-app', @@ -57,6 +58,9 @@ import {TitleCasePipeComponent} from './titlecase_pipe';

keyvalue

+ +

keyvalue

+ ` }) export class AppComponent { @@ -69,7 +73,7 @@ export class AppComponent { NumberPipeComponent, DeprecatedNumberPipeComponent, PercentPipeComponent, DeprecatedPercentPipeComponent, CurrencyPipeComponent, DeprecatedCurrencyPipeComponent, SlicePipeStringComponent, SlicePipeListComponent, I18nPluralPipeComponent, - I18nSelectPipeComponent, KeyValuePipeComponent + I18nSelectPipeComponent, KeyValuePipeComponent, CamelKebabPipeComponent ], imports: [BrowserModule], })