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实现 转小驼峰 Camel Case；转大驼峰 Pascal Case；transformText 函数通过测试用例

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程序员小墨 2024-04-02 22:30:45 +08:00
parent 181d2b4c6f
commit c7a16581ab
5 changed files with 108 additions and 27 deletions
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33
src/main-code/text-conversion.ts
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@ -8,13 +8,24 @@ import { transformText } from './text-transform';
* @since 2024-03-28
*/
export function toCamelCase(str: string): string {
// 切割文本
const result = transformText(str);
// Cut text 切割文本
let result = transformText(str);
console.log('result', result);
// TODO
// Post Process 后置处理
const words = result.trimResult.split('|');
const camelCaseWords = words.map((word, index) => {
if (index === 0) {
// 第一个单词保持不变
return word;
} else {
// 其他单词首字母大写
return word.charAt(0).toUpperCase() + word.slice(1);
}
});
return result.leadingSpace + camelCaseWords.join('') + result.trailingSpace;
return str.replace(/_([a-z])/g, (g) => g[1].toUpperCase());
// return str.replace(/_([a-z])/g, (g) => g[1].toUpperCase());
}
/**
@ -25,7 +36,19 @@ export function toCamelCase(str: string): string {
* @since 2024-03-28
*/
export function toPascalCase(str: string): string {
return str.replace(/(^\w|_\w)/g, (g) => g.toUpperCase().replace('_', ''));
// Cut text 切割文本
let result = transformText(str);
console.log('result', result);
// Post Process 后置处理
const words = result.trimResult.split('|');
const pascalCaseWords = words.map((word, index) => {
// 首字母大写
return word.charAt(0).toUpperCase() + word.slice(1);
});
return result.leadingSpace + pascalCaseWords.join('') + result.trailingSpace;
// return str.replace(/(^\w|_\w)/g, (g) => g.toUpperCase().replace('_', ''));
}
/**

25
src/main-code/text-transform.ts
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@ -1,3 +1,4 @@
import { TransformTextResult } from "../type-definition/text-transform-type";
const logDebugInfo = false;
@ -7,19 +8,21 @@ const logDebugInfo = false;
* @param str
* @since 2024-04-02
*/
export function transformText(input: string): string {
export function transformText(input: string): TransformTextResult {
logDebugInfo && console.log('input ', '->' + input + '<-');
// 记录首尾空格
const leadingSpaces = input.match(/^ +/);
const trailingSpaces = input.match(/ +$/);
const trailingSpaces = /^[ ]+$/.test(input)
? '' // 字符串全为空格时，将尾空格置为空字符串
: input.match(/ +$/);
// 去除首尾空格
input = input.trim();
// 不可以使用 input = input.trim(); 否则换行会被替换掉
input = input.replace(/^ +| +$/g, '');
// 使用正则表达式匹配中英文字母、连字符、下划线和空格
// 使用正则表达式匹配中英文字母、连字符、下划线、空格
let result = input.replace(/([A-Za-z\-_ ]+)/g, (match: string) => {
// 替换连字符为 '|' （如有多个则合并）
match = match.replace(/[-_ ]+/g, '|');
@ -48,9 +51,15 @@ export function transformText(input: string): string {
result = result.replace(/(^[\|]+|[\|]+$)/g, '');
// 还原首尾空格
// result = (leadingSpaces ? (leadingSpaces[0] + '|') : '') + result + (trailingSpaces ? ('|' + trailingSpaces[0]) : '');
result = (leadingSpaces ? leadingSpaces[0] : '') + result + (trailingSpaces ? trailingSpaces[0] : '');
const leadingSpaceStr = leadingSpaces ? leadingSpaces[0] : '';
const trailingSpaceStr = trailingSpaces ? trailingSpaces[0] : '';
let noTrimResult = leadingSpaceStr + result + trailingSpaceStr;
logDebugInfo && console.log('output ', '->' + result + '<-');
return result;
return {
leadingSpace: leadingSpaceStr,
trailingSpace: trailingSpaceStr,
result: noTrimResult,
trimResult: result,
};
}

3
src/test/extension.test.ts
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@ -35,7 +35,8 @@ suite('Extension Test: run test case', () => {
const inputList = Array.isArray(testCase.input) ? testCase.input : [testCase.input];
for (const input of inputList) {
// 验证 transformText
assert.strictEqual(testCase.transformText, transformText(input));
const transformTextResult = transformText(input);
assert.strictEqual(testCase.transformText, transformTextResult.result);
// 验证转换
assert.strictEqual(testCase.output.camelCase, toCamelCase(input));
assert.strictEqual(testCase.output.pascalCase, toPascalCase(input));

68
src/test/test-case.ts
View File

@ -24,13 +24,43 @@ const testGroups: Array<TestCaseGroup> = [
pascalCase: ' ',
},
},
{
title: 'empty input (contains space and enter 1)',
input: ' \n ',
transformText: ' \n ',
output: {
camelCase: ' \n ',
pascalCase: ' \n ',
},
},
{
title: 'empty input (contains space and enter 2)',
input: ' a\nb ',
transformText: ' a|\n|b ',
output: {
camelCase: ' a\nb ',
pascalCase: ' a\nb ',
},
},
// 输入长文本
{
title: 'long text input',
input:
`China's factory activity expanded in March after five consecutive months of contraction, an official survey revealed on Sunday, adding to a run of indicators that suggest the stabilization of the world's second-largest economy.`
,
transformText: '',
transformText:
"china|'|s|factory|activity|expanded|in|march|after|five|consecutive|months|of|contraction|,|an|official|survey|revealed|on|sunday|,|adding|to|a|run|of|indicators|that|suggest|the|stabilization|of|the|world|'|s|second|largest|economy|."
,
output: {
camelCase: '',
pascalCase: '',
},
},
// 输入包含数字
{
title: 'text and number input',
input: 'entity2Map',
transformText: 'entity|2|map',
output: {
camelCase: '',
pascalCase: '',
@ -41,10 +71,9 @@ const testGroups: Array<TestCaseGroup> = [
title: 'enter input',
input:
`How do you\bdo?
How do you\tdo!
`
How do you\tdo!`
,
transformText: '',
transformText: 'how|do|you|\b|do|?\n|how|do|you|\t|do|!',
output: {
camelCase: '',
pascalCase: '',
@ -56,7 +85,7 @@ const testGroups: Array<TestCaseGroup> = [
input:
'今天是星期日'
,
transformText: '',
transformText: '今天是星期日',
output: {
camelCase: '今天是星期日',
pascalCase: '今天是星期日',
@ -67,7 +96,7 @@ const testGroups: Array<TestCaseGroup> = [
input:
'🥰 a-cup/_of Coffee🍻,-_please!. '
,
transformText: '',
transformText: '🥰|a|cup|/|of|coffee|🍻,|please|!. ',
output: {
camelCase: '',
pascalCase: '',
@ -78,7 +107,7 @@ const testGroups: Array<TestCaseGroup> = [
input:
' NHDAs--+90-usz&* '
,
transformText: '',
transformText: ' n|h|d|as|+90|usz|&* ',
output: {
camelCase: '',
pascalCase: '',
@ -89,7 +118,7 @@ const testGroups: Array<TestCaseGroup> = [
input:
'--担心你鸿dAf_=coffee—_— '
,
transformText: '',
transformText: '担心你鸿|d|af|=|coffee|—|— ',
output: {
camelCase: '',
pascalCase: '',
@ -100,7 +129,7 @@ const testGroups: Array<TestCaseGroup> = [
input:
'fsdi_sdacsaf+desd'
,
transformText: '',
transformText: 'fsdi|sdacsaf|+|desd',
output: {
camelCase: '',
pascalCase: '',
@ -181,9 +210,10 @@ const testGroups: Array<TestCaseGroup> = [
' a_nice_day! ',
' ANiceDay! ',
' A_NICE_DAY! ',
' A_Nice_DaY! ',
' A-NiCe_Day! ',
' A----NiCe_Day_-_!-- ',
// ' A_Nice_DaY! ',
// ' A-NiCe_Day! ',
// ' A----NiCe_Day_-_!-- ',
' A----NICE_Day_-_!-- ',
],
transformText: ' a|nice|day|! ',
output: {
@ -194,7 +224,7 @@ const testGroups: Array<TestCaseGroup> = [
{
title: 'Normal input (a-nice-day)',
input: [
' A niCe-Day-',
' A NICE-Day-',
' A niceDay',
],
transformText: ' a|nice|day',
@ -203,6 +233,18 @@ const testGroups: Array<TestCaseGroup> = [
pascalCase: ' A NiceDay',
},
},
{
title: 'Normal input (foo-bar)',
input: [
' app2-Trrre ',
' app2Trrre ',
],
transformText: ' app|2|trrre ',
output: {
camelCase: '',
pascalCase: '',
},
},
{
title: 'Normal input (Julius-Caesar, William-Shakespeare, ...)',
input:

6
src/type-definition/text-transform-type.ts Normal file
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@ -0,0 +1,6 @@
export type TransformTextResult = {
leadingSpace: string
trailingSpace: string
result: string
trimResult: string
};