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// Copyright (c) 2016, Matt Godbolt
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
const _ = require('underscore'),
crypto = require('crypto');
const tabsRe = /\t/g;
const lineRe = /\r?\n/;
function splitLines(text) {
const result = text.split(lineRe);
if (result.length > 0 && result[result.length - 1] === '')
return result.slice(0, result.length - 1);
return result;
}
exports.splitLines = splitLines;
function eachLine(text, func, context) {
return _.each(splitLines(text), func, context);
}
exports.eachLine = eachLine;
function expandTabs(line) {
let extraChars = 0;
return line.replace(tabsRe, function (match, offset) {
const total = offset + extraChars;
const spacesNeeded = (total + 8) & 7;
extraChars += spacesNeeded - 1;
return " ".substr(spacesNeeded);
});
}
exports.expandTabs = expandTabs;
function parseOutput(lines, inputFilename, pathPrefix) {
const re = /^\s*<source>[:(]([0-9]+)(:?,?([0-9]+):?)?[):]*\s*(.*)/;
const result = [];
eachLine(lines, function (line) {
line = line.split('<stdin>').join('<source>');
if (pathPrefix) line = line.replace(pathPrefix, "");
if (inputFilename) line = line.split(inputFilename).join('<source>');
if (line !== "") {
const lineObj = {text: line};
const match = line.replace(/\x1b\[[\d;]*[mK]/g, '').match(re);
if (match) {
lineObj.tag = {
line: parseInt(match[1]),
column: parseInt(match[3] || "0"),
text: match[4].trim()
};
}
result.push(lineObj);
}
});
return result;
}
exports.parseOutput = parseOutput;
function padRight(name, len) {
while (name.length < len) name = name + ' ';
return name;
}
exports.padRight = padRight;
function trimRight(name) {
var l = name.length;
while (l > 0 && name[l-1] === ' ') l -= 1;
return name.substr(0, l);
}
exports.trimRight = trimRight;
/***
* Anonymizes given IP.
* For IPv4, it removes the last octet
* For IPv6, it removes the last three hextets
*
* @param ip {String} IP (localhost|IPv4|IPv6)
* @returns {String} Anonymized IP
*/
exports.anonymizeIp = function anonymizeIp(ip) {
if (ip.includes('localhost')) {
return ip;
}
else if (ip.includes(':')) {
// IPv6
return ip.replace(/:[\da-fA-F]{0,4}:[\da-fA-F]{0,4}:[\da-fA-F]{0,4}$/, ':0:0:0');
} else {
// IPv4
return ip.replace(/\.\d{1,3}$/, '.0');
}
};
function objectToHashableString(object) {
// See https://stackoverflow.com/questions/899574/which-is-best-to-use-typeof-or-instanceof/6625960#6625960
return (typeof(object) === 'string') ? object : JSON.stringify(object);
}
const DefaultHash = 'Compiler Explorer Default Version 1';
/***
* Gets the hash (as a binary buffer) of the given object
*
* Limitation: object shall not have circular references
* @param object {*} Object to get hash from
* @param HashVersion {String} Hash "version"
* @returns {Buffer} Hash of object
*/
exports.getBinaryHash = function getHash(object, HashVersion = DefaultHash) {
return crypto.createHmac('sha256', HashVersion)
.update(objectToHashableString(object))
.digest('buffer');
};
/***
* Gets the hash (as a hex string) of the given object
*
* Limitation: object shall not have circular references
* @param object {*} Object to get hash from
* @param HashVersion {String} Hash "version"
* @returns {String} Hash of object
*/
exports.getHash = function getHash(object, HashVersion = DefaultHash) {
return crypto.createHmac('sha256', HashVersion)
.update(objectToHashableString(object))
.digest('hex');
};
/***
* Gets every (source, lang) & (compilerId) available
* @param content {Array} GoldenLayout config topmost content field
* @returns {Object} contents - Available Editors & Compilers
* @returns {Array} contents.editors - Available editors
* @returns {Array} contents.compilers - Available compilers
*/
exports.glGetMainContents = function glGetMainContents(content) {
let contents = {editors: [], compilers: []};
_.each(content, element => {
if (element.type === 'component') {
if (element.componentName === 'codeEditor') {
contents.editors.push({source: element.componentState.source, language: element.componentState.lang});
} else if (element.componentName === 'compiler') {
contents.compilers.push({compiler: element.componentState.compiler});
}
} else {
const subComponents = glGetMainContents(element.content);
contents.editors = contents.editors.concat(subComponents.editors);
contents.compilers = contents.compilers.concat(subComponents.compilers);
}
});
return contents;
};
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