init

2018-05-23 09:51:18 +08:00
commit c81b2d1989
14 changed files with 409 additions and 0 deletions
--- a/scripts/tools.js
+++ b/scripts/tools.js
@ -0,0 +1,53 @@
+function formatCSV(data) {
+    return data.reduce(
+        (csv, lineCells) => {
+            let line = lineCells.reduce(
+                (lineText, cell, idx) => {
+                    cell = '"' + cell.trim().replace(/"/g, '""') + '"';
+                    return lineText + cell + (idx == lineCells.length - 1 ? "" : ",")
+                }, "");
+            return csv + line + "\n";
+        },
+        ""
+    );
+}
+
+function saveFile(data, mimeType, fileName) {
+    fileName = fileName || document.title || "result";
+    var blob;
+    if (typeof window.Blob == "function") {
+        blob = new Blob([data], {
+            type: mimeType
+        })
+    } else {
+        var BlobBuiler = window.BlobBuilder || window.MozBlobBuilder || window.WebKitBlobBuilder || window.MSBlobBuilder;
+        var builer = new BlobBuiler();
+        builer.append(data);
+        blob = builer.getBlob(mimeType)
+    }
+    var URL = window.URL || window.webkitURL;
+    var url = URL.createObjectURL(blob);
+    var link = document.createElement("a");
+    if ('download' in link) {
+        link.style.visibility = "hidden";
+        link.href = url;
+        link.download = fileName;
+        document.body.appendChild(link);
+        var j = document.createEvent("MouseEvents");
+        j.initEvent("click", true, true);
+        link.dispatchEvent(j);
+        document.body.removeChild(link)
+    } else if (navigator.msSaveBlob) {
+        navigator.msSaveBlob(blob, fileName)
+    } else {
+        location.href = url
+    }
+}
+
+function saveFileAsk(data) {
+    let csv = formatCSV(data.slice(1, 50)).trim() || "- Empty -";
+    if (confirm(`Click confirm to download if the sample data looks good (${data.length-1} items)：\n\n${csv}`)) {
+        csv = formatCSV(data);
+        saveFile(csv, "text/csv");
+    }
+}