p5.js-web-editor/client/utils/consoleUtils.js

105 lines
2.9 KiB
JavaScript
Raw Normal View History

import {
EXTERNAL_LINK_REGEX
} from '../../server/utils/fileUtils';
export const hijackConsole = `var iframeWindow = window;
var originalConsole = iframeWindow.console;
iframeWindow.console = {};
var methods = [
'debug', 'clear', 'error', 'info', 'log', 'warn'
];
var consoleBuffer = [];
var LOGWAIT = 500;
methods.forEach( function(method) {
iframeWindow.console[method] = function() {
originalConsole[method].apply(originalConsole, arguments);
var args = Array.from(arguments);
args = args.map(function(i) {
// catch objects
return (typeof i === 'string') ? i : JSON.stringify(i);
});
consoleBuffer.push({
method: method,
arguments: args,
source: 'sketch'
});
};
});
setInterval(function() {
if (consoleBuffer.length > 0) {
window.parent.postMessage(consoleBuffer, '*');
consoleBuffer.length = 0;
}
}, LOGWAIT);`;
export const hijackConsoleErrorsScript = (offs) => {
const s = `
function getScriptOff(line) {
var offs = ${offs};
var l = 0;
var file = '';
for (var i=0; i<offs.length; i++) {
var n = offs[i][0];
if (n < line && n > l) {
l = n;
file = offs[i][1];
}
}
return [line - l, file];
}
// catch reference errors, via http://stackoverflow.com/a/12747364/2994108
window.onerror = function (msg, url, lineNumber, columnNo, error) {
var string = msg.toLowerCase();
var substring = "script error";
var data = {};
if (url.match(${EXTERNAL_LINK_REGEX}) !== null && error.stack){
var errorNum = error.stack.split('about:srcdoc:')[1].split(':')[0];
var fileInfo = getScriptOff(errorNum);
data = msg + ' (' + fileInfo[1] + ': line ' + fileInfo[0] + ')';
} else {
var fileInfo = getScriptOff(lineNumber);
data = msg + ' (' + fileInfo[1] + ': line ' + fileInfo[0] + ')';
}
window.parent.postMessage([{
method: 'error',
arguments: data,
source: fileInfo[1]
}], '*');
return false;
};
`;
return s;
};
export const startTag = '@fs-';
export const getAllScriptOffsets = (htmlFile) => {
const offs = [];
let found = true;
let lastInd = 0;
let ind = 0;
let endFilenameInd = 0;
let filename = '';
let lineOffset = 0;
while (found) {
ind = htmlFile.indexOf(startTag, lastInd);
if (ind === -1) {
found = false;
} else {
endFilenameInd = htmlFile.indexOf('.js', ind + startTag.length + 3);
filename = htmlFile.substring(ind + startTag.length, endFilenameInd);
// the length of hijackConsoleErrorsScript is 33 lines
lineOffset = htmlFile.substring(0, ind).split('\n').length + 33;
offs.push([lineOffset, filename]);
lastInd = ind + 1;
}
}
return offs;
};