sard-uniapp/utils/file.js

sard-uniapp 是一套基于 Uniapp + Vue3 框架开发的兼容多端的 UI 组件库

import { isObject, isString } from './is';
import { logError } from './log';
import { isHarmony, isMp, isWeb } from './system';
/**
 * @description: 判断url是否为图片url
 * @param {string} url
 * @return {boolean}
 */
export function isImageUrl(url) {
    const rPicMime = /\.(?:jpg|jpeg|png|gif|svg|bmp|webp|tiff|tif|heic|heif)$/i;
    return (typeof url === 'string' &&
        (rPicMime.test(url) || url.indexOf('data:image') === 0));
}
/**
 * @description: 判断url是否为视频url
 * @param {string} url
 * @return {boolean}
 */
export function isVideoUrl(url) {
    const rVideoMime = /\.(avi|mp4|mov|wmv|flv|mkv|mpeg|mpg|3gp|webm|swf|rmvb|vob|ts|mts|m2ts|divx|asf|ogv|f4v)$/i;
    return (typeof url === 'string' &&
        (rVideoMime.test(url) || url.indexOf('data:video') === 0));
}
/**
 * @description: 判断url是否为文件url
 * @param {string} url
 * @return {boolean}
 */
export function isFileUrl(url) {
    return url.includes('/');
}
/**
 * @description: 读取文件内容
 * @param {File} file
 * @param {ResultType} resultType
 * @return {Promise<void | string>}
 */
export function readFileContent(file, resultType) {
    return new Promise((resolve) => {
        if (resultType === 'file') {
            resolve();
            return;
        }
        const reader = new FileReader();
        reader.onload = () => {
            resolve(reader.result);
        };
        if (resultType === 'dataUrl') {
            reader.readAsDataURL(file);
        }
        else if (resultType === 'text') {
            reader.readAsText(file);
        }
    });
}
/**
 * @description: 从路径中获取文件名
 * @param {string} path
 * @param {boolean} ext 是否包含扩展名
 * @return {string}
 */
export function getFileName(path, ext = true) {
    const name = path.match(/\/([^/]+)$/)?.[1] || '';
    return ext ? name : name.replace(/\.[^.]+$/, '');
}
/**
 * 将临时文件路径转换为 base64 编码字符串
 * @param filePath
 * @returns
 */
export function readAsDataURL(filePath) {
    if (isString(filePath) && filePath.startsWith('data:')) {
        return filePath;
    }
    const result = uni.getFileSystemManager().readFileSync(filePath, 'base64');
    const data = isObject(result) && 'data' in result ? result.data : result;
    return 'data:image/png;base64,' + (isString(data) ? data : '');
}
export async function filePathToDataURL(filePath) {
    if (isWeb) {
        return filePath;
    }
    if (isMp || isHarmony) {
        return readAsDataURL(filePath);
    }
    return new Promise((resolve, reject) => {
        try {
            plus.io.resolveLocalFileSystemURL(filePath, (entry) => {
                ;
                entry.file((file) => {
                    const fileReader = new plus.io.FileReader();
                    fileReader.readAsDataURL(file, 'utf-8');
                    fileReader.onloadend = (evt) => {
                        resolve(evt.target.result);
                    };
                });
            });
        }
        catch (err) {
            logError(err);
            reject(err);
        }
    });
}