106 lines
2.6 KiB
TypeScript
106 lines
2.6 KiB
TypeScript
/**
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* 获取文件的后缀名
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* @param fileName 文件名
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* @returns 文件后缀名
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*/
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export function getFileExt(fileName: string): string {
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const index = fileName.lastIndexOf(".");
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if (index === -1) {
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return "";
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}
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return fileName.substring(index + 1);
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}
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/**
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* 获取文件全名（包含扩展名）
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* 该函数接收一个表示文件路径的字符串作为参数，返回该路径中文件名部分。
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* 首先查找路径中最后一个斜杠或反斜杠的索引，若未找到则直接返回路径；
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* 若找到，则使用substring方法提取最后一个斜杠或反斜杠后面的字符串作为文件名并返回。
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* @param path 文件路径
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* @returns 文件全名（包含扩展名）
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*/
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export function getFileFullName(path: string): string {
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let index = path.lastIndexOf("/");
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if (index === -1) {
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index = path.lastIndexOf("\\");
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if (index === -1) {
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return path;
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}
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}
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return path.substring(index + 1);
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}
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/**
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* 获取文件名不包含扩展名
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*/
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export function getFileNameWithoutExt(path: string): string {
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const fileName = getFileFullName(path);
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const index = fileName.lastIndexOf(".");
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if (index === -1) {
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return fileName;
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}
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return fileName.substring(0, index);
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}
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/**
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* 文件信息
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*/
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export interface IFileInfo {
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/** 文件名（包含扩展名） */
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fileName: string;
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/**
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* 文件名不带扩展名
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*/
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fileNameNoExt: string;
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/** 文件扩展名 */
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fileExtName: string;
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/** 路径仅包含文件夹 */
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pathOnly: string;
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/** 完整路径 */
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fullPath: string;
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}
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/**
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* 获取文件信息
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* @param path 文件路径
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* @param platform 平台名称，默认为"win32"
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* @returns 包含文件名、文件名不带扩展名、文件扩展名、路径仅包含文件夹、完整路径的对象
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*/
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export function getFileInfo(
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path: string,
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platform: string = "win32"
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): IFileInfo {
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const pathSaprator = platform === "win32" ? "\\" : "/";
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let pathOnly: string;
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let fileName: string;
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let fileExtName: string;
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let fileNameNoExt: string;
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const pathIndex = path.lastIndexOf(pathSaprator);
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if (pathIndex === -1) {
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pathOnly = "";
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fileName = path;
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} else {
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pathOnly = path.substring(0, pathIndex + 1);
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fileName = path.substring(pathIndex + 1);
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}
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const extIndex = fileName.lastIndexOf(".");
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if (extIndex === -1) {
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fileExtName = "";
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fileNameNoExt = fileName;
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} else {
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fileExtName = fileName.substring(extIndex + 1);
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fileNameNoExt = fileName.substring(0, extIndex);
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}
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return {
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fileName,
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fileNameNoExt,
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fileExtName,
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fullPath: path,
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pathOnly,
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};
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}
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