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import { ElMessage } from 'element-plus';
// 上传图片不携带baseUrl 本地预览时显示
export const imageBaseUrl = (image) => {
if (isDev() && image && image.startsWith('/')) {
let baseURL = axiosInstance.defaults.baseURL;
if (baseURL.startsWith('/')) {
baseURL = window.location.host;
}
baseURL = baseURL?.endsWith('/') ? baseURL.slice(0, -1) : baseURL;
return baseURL && baseURL + image;
} else {
return image;
}
};
// 下载文件
export function downloadFile(res, filename) {
if (res.status == 200) {
if (res.headers['content-disposition']) {
filename = decodeURIComponent(
res.headers['content-disposition'].split(';')[1].split('filename=')[1]
);
}
const blobObject = new Blob([res.data], { type: res.data.type });
if (window.navigator.msSaveBlob) {
// 兼容ie11
window.navigator.msSaveBlob(blobObject, filename);
} else {
const url = URL.createObjectURL(blobObject);
const a = document.createElement('a');
document.body.appendChild(a); // 此处增加了将创建的添加到body当中
a.href = url;
a.download = filename;
a.target = '_blank';
a.click();
a.remove(); // 将a标签移除
}
} else {
const reader = new FileReader();
reader.onload = function () {
const responseText = reader.result;
if (reader.result) {
const exception = JSON.parse(responseText);
ElMessage.error(exception.msg || exception.error);
}
};
reader.readAsText(res.data);
}
}
// 获取文件后缀
export const getSuffix = (name) => {
const suffix = name.includes('.')
? name.substring(name.lastIndexOf('.') + 1)
: '';
return suffix;
};
// 获取文件类型
export const getLanguage = (name) => {
const suffix = getSuffix(name);
let language = '';
switch (suffix) {
case 'md': {
language = 'markdown';
break;
}
case 'js': {
language = 'javascript';
break;
}
case 'txt': {
language = 'plaintext';
break;
}
case '': {
language = 'plaintext';
break;
}
default:
language = suffix;
break;
}
return language;
};
// 判断是否为图片
export const isImage = (name) => {
const suffix = getSuffix(name);
const imageTypes = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp', 'svg'];
return imageTypes.includes(suffix);
};
// 图片base64增加前缀
export const imageBase64Prefix = (name, content) => {
const suffix = getSuffix(name);
let prefix = '';
switch (suffix) {
case 'jpg': {
prefix = 'data:image/jpeg;base64,';
break;
}
case 'svg': {
prefix = 'data:image/svg+xml;base64,';
break;
}
default:
prefix = `data:image/${suffix};base64,`;
break;
}
return prefix + content;
};
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