Handling of RTF document in React-Javascript-angular
Please refer this Package : RTF
Also attaching sample HTML file which will help you in Using this RTF library Further.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<script src="../.common/dep/jquery.min.js"></script>
<script src="../../dist/WMFJS.bundle.js"></script>
<script src="../../dist/EMFJS.bundle.js"></script>
<script src="../../dist/RTFJS.bundle.js"></script>
<script>
function closeDoc(reset) {
$("#havemeta").hide();
$("#meta").empty();
$("#content").empty();
$("#dropzone").show();
$("#opened_doc").hide();
$("#closed_doc").show();
$("#tools").hide();
if (reset)
$("#samplecombo").val("");
}
function beginLoading() {
closeDoc(false);
$("#dropzone").hide();
$("#content").text("Loading...");
}
function setPictBorder(elem, show) {
return elem.css("border", show ? "1px dotted red" : "none");
}
function setUnsafeLink(elem, warn) {
return elem.css("border", warn ? "1px dashed red" : "none");
}
function displayRtfFile(blob) {
try {
var legacyPictures = $("#legacypicts").prop("checked");
var showPicBorder = $("#showpicborder").prop("checked");
var warnHttpLinks = $("#warnhttplink").prop("checked");
var settings = {
onPicture: function(isLegacy, create) {
// isLegacy is null if it's the only available picture (e.g. legacy rtf)
if (isLegacy === null || isLegacy === legacyPictures) {
var elem = $(create()).attr("class", "rtfpict"); // WHY does addClass not work on <svg>?!
return setPictBorder(elem, showPicBorder)[0];
}
},
onHyperlink: function(create, hyperlink) {
var url = hyperlink.url();
var lnk = create();
if (url.substr(0, 7) == "http://") {
// Wrap http:// links into a <span>
var span = setUnsafeLink($("<span>").addClass("unsafelink").append(lnk), warnHttpLinks);
span.click(function(evt) {
if ($("#warnhttplink").prop("checked")) {
evt.preventDefault();
alert("Unsafe link: " + url);
return false;
}
});
return {
content: lnk,
element: span[0]
};
} else {
return {
content: lnk,
element: lnk
};
}
},
};
var doc = new RTFJS.Document(blob, settings);
var haveMeta = false;
var meta = doc.metadata();
for (var prop in meta) {
$("#meta").append($("<div>").append($("<span>").text(prop + ": ")).append($("<span>").text(meta[prop].toString())));
haveMeta = true;
}
if (haveMeta)
$("#havemeta").show();
doc.render().then(html => {
$("#content").empty().append(html);
$("#closed_doc").hide();
$("#opened_doc").show();
$("#tools").show();
console.log("All done!");
}).catch(e => {
if (e instanceof RTFJS.Error) {
$("#content").text("Error: " + e.message);
throw e;
}
else {
throw e;
}
});
} catch(e) {
if (e instanceof RTFJS.Error) {
$("#content").text("Error: " + e.message);
throw e;
}
else {
throw e;
}
}
}
function stringToBinaryArray(string) {
var buffer = new ArrayBuffer(string.length);
var bufferView = new Uint8Array(buffer);
for (var i=0; i<string.length; i++) {
bufferView[i] = string.charCodeAt(i);
}
return buffer;
}
function loadRtfFile(file) {
beginLoading();
$.ajax({
url: file,
dataType: "text",
processData: false,
success: function(result) {
displayRtfFile(stringToBinaryArray(result));
},
error: function(jqXHR, textStatus, errorThrown) {
$("#content").text("Error: " + errorThrown);
}
});
}
$(document).ready(function() {
$("#closebutton").click(function() {
closeDoc(true);
});
$("#samplecombo").change(function() {
var file = $(this).val();
if (file.length == 0) {
closeDoc(true);
} else {
loadRtfFile('../.common/data/rtf/' + $(this).val());
}
});
$("#showpicborder").change(function() {
var show = $(this).prop("checked");
$(".rtfpict").each(function() {
setPictBorder($(this), show);
});
});
$("#warnhttplink").change(function() {
var warn = $(this).prop("checked");
$(".unsafelink").each(function() {
setUnsafeLink($(this), warn);
});
});
$("#dropzone")
.on("drop", function(evt) {
evt.stopPropagation()
evt.preventDefault();
var files = evt.originalEvent.dataTransfer.files;
if (files.length > 1) {
alert("Please only drop one file!");
} else {
var reader = new FileReader();
reader.onload = function(evt) {
beginLoading();
setTimeout(function() {
displayRtfFile(evt.target.result);
}, 100);
};
reader.readAsArrayBuffer(files[0]);
}
})
.on("dragover", function(evt) {
evt.stopPropagation()
evt.preventDefault();
});
closeDoc(true);
});
</script>
</head>
<body>
<div style="margin: 4pt;">
<span>
<form>
<span id="opened_doc" style="display: none;">
<input id="closebutton" type="button" value="Close"/>
</span>
<span id="closed_doc">
<select id="samplecombo">
<option selected="selected" value="">Drag&Drop a RTF document</option>
<option>simple1.rtf</option>
<option>simple2.rtf</option>
<option>simple3.rtf</option>
<option>simple4.rtf</option>
<option>simple5.rtf</option>
<option>simplepict.rtf</option>
<option>simplepng.rtf</option>
<option>simplepngbin.rtf</option>
<option>hyperlink.rtf</option>
</select>
<label><input id="legacypicts" type="checkbox" checked/>Load legacy pictures</label>
</span>
</form>
</span>
<span id="tools" style="display: none;">
<label><input id="showpicborder" type="checkbox"/>Picture border</label>
<label><input id="warnhttplink" type="checkbox"/>Protect from unsafe links</label>
</span>
</div>
<div id="dropzone" style="display: inline-block; border-radius: 6pt; border: 2pt solid #dddddd; padding: 30pt;">
Drop an RTF document here
</div>
<div style="background-color:#f0ffff;display:none;" id="havemeta">
<div>Metadata:</div>
<div id="meta"></div>
</div>
<div id="content"></div>
</body>
</html>
Working sample created with Javscript
// add this dependency in package.json
import * as rtfjs from "rtf.js";
const rtfData = (data, elementLabel, index = 0) => {
if (data) {
if (data?.toLowerCase().includes("rtf")) {
const { RTFJS } = rtfjs;
RTFJS.loggingEnabled(false);
try {
const doc = new RTFJS.Document(stringToArrayBufferChange(data), {});
const meta = doc.metadata();
doc
.render()
.then(function (htmlElements) {
let lastElementIndex = htmlElements.length - 1;
htmlElements.forEach((eachHtml, idx) => {
if (eachHtml.innerText.trim()) {
lastElementIndex = idx;
}
});
htmlElements.forEach((eachHtml, idx) => {
if (idx <= lastElementIndex) {
document
.getElementById(`${elementLabel}-${index}`)
?.append(eachHtml);
}
});
})
.catch((error) => console.error(error));
} catch {
const element = document.createElement("span");
element.append("Error processing event notes");
element.style.color = "red";
document.getElementById(`${elementLabel}-${index}`)?.append(element);
}
} else {
const element = document.createElement("span");
element.append(data);
document.getElementById(`${elementLabel}-${index}`)?.append(element);
}
}
};
const stringToArrayBufferChange = (str) => {
const buffer = new ArrayBuffer(str.length);
const bufferView = new Uint8Array(buffer);
for (let i = 0; i < str.length; i++) {
bufferView[i] = str.charCodeAt(i);
}
return buffer;
};
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