整理项目结构；确认需要实现的转换

src/main-code/text-conversion.ts

@@ -0,0 +1,43 @@
+/**
+ * 转小驼峰 to Camel Case
+ * 
+ * @param {string} str user selection
+ * @returns 
+ * @since 2024-03-28
+ */
+export function toCamelCase(str: string): string {
+    return str.replace(/_([a-z])/g, (g) => g[1].toUpperCase());
+}
+
+/**
+ * 转大驼峰 to Pascal Case
+ * 
+ * @param {string} str user selection
+ * @returns 
+ * @since 2024-03-28
+ */
+export function toPascalCase(str: string): string {
+    return str.replace(/(^\w|_\w)/g, (g) => g.toUpperCase().replace('_', ''));
+}
+
+/**
+ * 转大写 to Upper Case
+ * 
+ * @param {string} str user selection
+ * @returns 
+ * @since 2024-03-28
+ */
+export function toUpperCase(str: string): string {
+    return str.toUpperCase();
+}
+
+/**
+ * 转小写 to Lower Case
+ * 
+ * @param {string} str user selection
+ * @returns 
+ * @since 2024-03-28
+ */
+export function toLowerCase(str: string): string {
+    return str.toLowerCase();
+}

src/main-code/text-split.ts

@@ -0,0 +1,89 @@
+
+const handlerList = [];
+/**
+ * 小驼峰处理中间件
+ * 
+ * @param str 
+ * @since 2024-03-29
+ */
+const camelCaseHandler = (str: string) => {
+    // 是否是小驼峰
+    const regexp = /^$/g; // need done
+    // if()
+};
+handlerList.push(camelCaseHandler);
+
+/**
+ * 小驼峰处理中间件
+ * 
+ * @param str 
+ * @since 2024-03-29
+ */
+const pascalCaseHandler = (str: string) => {
+    // 是否是小驼峰
+    const regexp = /^$/g; // need done
+};
+handlerList.push(pascalCaseHandler);
+
+type SplitFailResult = {
+    success: false
+    errMsg: string
+};
+
+type SplitSuccessResult = {
+    success: true
+    result: Array<string>
+};
+
+type SplitResult = SplitFailResult | SplitSuccessResult;
+
+/**
+ * 分词
+ * 
+ * @param str 
+ * @since 2024-03-29
+ */
+export function splitWord(str: string): SplitResult {
+    // check parameter type
+    if (typeof str !== 'string') {
+        return { success: false, errMsg: `str is not string, type: ${typeof str}` };
+    }
+
+    // check parameter length
+    if (str.length === 0) {
+        return { success: false, errMsg: 'str is empty string.' };
+    }
+    else if (str.length > 64) {
+        return { success: false, errMsg: 'str is too long, it does not appear to be an acceptable input.' };
+    }
+
+    // check whether the input matches the criteria
+    // 是否包含空格
+    const isContainSpace = str.indexOf(' ') !== -1;
+    // 是否包含连字符
+    const isContainHyphen = str.indexOf('-') !== -1;
+    // 是否包含下划线
+    const isContainUnderline = str.indexOf('_') !== -1;
+    // 是否包含除空格外的其他连字符 (检查字符串是否包含 - 或 _ ，并且不包含空格)
+    const isContainSeparator =  /^[^\s]*[-_]+[^\s]*$/.test(str);
+
+    // 是否是小驼峰命名法
+    const isCamelCase = /^[a-z][a-zA-Z]*$/;
+    // 是否是大驼峰命名法
+    const isPascalCase = /^[A-Z][a-zA-Z]*$/;
+    // 是否包含大写字母
+    const isContainUpperCaseLetter = /[A-Z]/.test(str);
+    // 是否包含小写字母
+    const isContainLowerCaseLetter = /[a-z]/.test(str);
+    // 是否包含字母
+    const isContainLetter = /[a-zA-Z]/.test(str);
+
+    return { success: true, result: [] };
+}
+
+const result = splitWord('hello world');
+if (result.success) {
+    console.log('success!', result.result);
+} else {
+    console.log('skip!', result.errMsg);
+}