108 lines
3.0 KiB
JavaScript
108 lines
3.0 KiB
JavaScript
/*jshint browser:true */
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/*eslint-env browser */
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/*global CRC32, console, Uint8Array */
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var X = CRC32;
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function console_log() { if(typeof console !== 'undefined') console.log.apply(console, [].slice.call(arguments)); }
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function lpad(s, len, chr){
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var L = len - s.length, C = chr || " ";
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if(L <= 0) return s;
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return new Array(L+1).join(C) + s;
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}
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function is_defined(val, keys) {
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if(typeof val === "undefined") return false;
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return keys.length === 0 || is_defined(val[keys[0]], keys.slice(1));
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}
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function make_chunk_buf_to_str(BType) {
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return function(data) {
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var o = "", l = 0, w = 10240, L = data.byteLength/w;
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for(; l<L; ++l) o+=String.fromCharCode.apply(null, ((new BType(data.slice(l*w,l*w+w)))));
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o+=String.fromCharCode.apply(null, ((new BType(data.slice(l*w)))));
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return o;
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};
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}
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var bstrify = make_chunk_buf_to_str(typeof Uint8Array !== 'undefined' ? Uint8Array : Array);
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var rABS = typeof FileReader !== 'undefined' && is_defined(FileReader, ['prototype', 'readAsBinaryString']);
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var userABS = (document.getElementsByName("userabs")[0]);
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if(!rABS) {
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userABS.disabled = true;
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userABS.checked = false;
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}
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function process_value(val) {
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var output = [];
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output[0] = "Signed : " + val;
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output[1] = "Unsigned : " + (val>>>0);
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output[2] = "Hex value : " + lpad((val>>>0).toString(16),8,'0');
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var out = (document.getElementById('out'));
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var o = output.join("\n");
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if(typeof out.innerText == "undefined") out.textContent = o;
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else out.innerText = o;
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console_log("output", new Date());
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}
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var dotxt = (document.getElementById('dotext'));
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dotxt.onclick = function() {
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var txt=(document.getElementById('rawdata'));
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console_log("onload", new Date());
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var wb = X.str(txt.value);
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process_value(wb);
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};
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var readcb = function(e) {
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console_log("onload", new Date(), rABS, false);
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var target = (e.target);
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var data = target.result;
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var val = rABS ? X.bstr(data) : X.str(bstrify(data));
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process_value(val);
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};
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var handle_file = function(e) {
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rABS = userABS.checked;
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var otarget = (e.target);
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var files = otarget.files;
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var f = files[0];
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var reader = new FileReader();
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reader.onload = readcb;
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if(rABS) (reader).readAsBinaryString(f);
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else reader.readAsArrayBuffer(f);
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};
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var xlf = (document.getElementById('xlf'));
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if(xlf.addEventListener) xlf.addEventListener('change', handle_file, false);
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var handle_drop = (function(e) {
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e.stopPropagation();
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e.preventDefault();
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rABS = userABS.checked;
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if(!e.dataTransfer) return;
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var files = e.dataTransfer.files;
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var f = files[0];
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var reader = new FileReader();
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reader.onload = readcb;
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if(rABS) (reader).readAsBinaryString(f);
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else reader.readAsArrayBuffer(f);
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});
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var handle_drag = (function (e) {
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e.stopPropagation();
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e.preventDefault();
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if(e.dataTransfer) e.dataTransfer.dropEffect = 'copy';
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});
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var drop = (document.getElementById('drop'));
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if(drop.addEventListener) {
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drop.addEventListener('dragenter', handle_drag, false);
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drop.addEventListener('dragover', handle_drag, false);
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drop.addEventListener('drop', handle_drop, false);
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}
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