习惯使用MAC的同事需要一个合并CSV文件的小工具，第一个文件+去掉前七行的剩余追加文件，追加文件可以多选。
由于没有写MAC应用的相关经验，就考虑使用网页应用完成。
搜罗相关资料，搞了个可以使用的缝合怪，JavaScript借助浏览器实现”跨平台“应用。哈哈哈
以下都是正文，Copy之后浏览器打开就可以使用。暂时仅限于CSV文件
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>读取 CSV（Comma-Separated Values）文件</title>
</head>
<body>
<div>
<span>首个文件：</span>
<input type="file" id="FirstFile" style="width:400px" accept="text/csv" />
<progress value="0"></progress>
</div>
<div>
<span>追加文件：</span>
<input type="file" id="inputOtherFile" multiple style="width:400px" accept="text/csv" />
<progress id="ProgressOtherFile" value="0"></progress>
<button id="btnAppendFile" οnclick="AppendFile3()">追加文件</button>
</div>
<div>
<h2>合并导出CSV</h2>
<a id="test" οnclick="GetCSV(this)" download="downlaod.csv" href="#">下载.CSV</a>
</div>
<div id="divFileNames">
</div>
<script type="text/javascript">
var result = "";
function GetCSV(mylink) {
if (result.length == 0) {
alert('无内容可以导出');
return;
}
var data = result;
mylink.download = "合并.CSV";
data = "\ufeff" + data;
var blob = new Blob([data], { type: 'text/csv,charset=UTF-8' });
var csvUrl = URL.createObjectURL(blob);
mylink.href = csvUrl;
}
window.onload = (event) => {
// console.log(event);
main();
}
function main() {
var inputFile = document.querySelector("input[id='FirstFile']");
inputFile.onchange = (event) => {
// console.log(event);
var file = inputFile.files[0];
var fileReader = new FileReader();
fileReader.readAsText(file, "utf-8");
// 显示进度
var progress = document.querySelector("progress");
progress.max = file.size;
progress.value = 0;
fileReader.onprogress = (event) => {
progress.value = event.loaded;
}
fileReader.onload = (event) => {
result = fileReader.result;
// console.log(result); // 读取的结果
}
}
}
function AppendFile3() {
readmultifiles(document.getElementById("inputOtherFile").files);
}
function readmultifiles(files) {
var reader = new FileReader();
function readFile(index) {
if (index >= files.length)
return;
var file = files[index];
var progress = document.getElementById("ProgressOtherFile");
progress.max = file.size;
progress.value = 0;
reader.onprogress = (event) => {
progress.value = event.loaded;
}
reader.onload = function (e) {
// get file content
var bin = e.target.result;
var resultTemp = bin.toString();
// do sth with bin
// var divFileNames = document.getElementById("divFileNames");
// divFileNames.innerHTML = divFileNames.innerHTML + '<div><label>' + file.name + '</label></div>';
// var indexofEnter = resultTemp.toString().indexOf('Measurement Unit ----->') + 23;
// resultTemp = resultTemp.substring(indexofEnter);
// indexofEnter = resultTemp.toString().indexOf('\n') + 1;
// result = result + resultTemp.substring(indexofEnter);
readFile(index + 1)
}
reader.readAsBinaryString(file);
}
readFile(0);
}
</script>
</body>
</html>
