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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.
"use strict";
var GoldenLayout = require('goldenlayout');
var rison = require('rison');
var $ = require('jquery');
var Components = require('components');
var lzstring = require('lzstring');
var _ = require('underscore');
function convertOldState(state) {
var sc = state.compilers[0];
if (!sc) throw new Error("Unable to determine compiler from old state");
var content = [];
var source;
if (sc.sourcez) {
source = lzstring.decompressFromBase64(sc.sourcez);
} else {
source = sc.source;
}
var options = {compileOnChange: true, colouriseAsm: state.filterAsm.colouriseAsm};
var filters = _.clone(state.filterAsm);
delete filters.colouriseAsm;
content.push(Components.getEditorWith(1, source, options));
content.push(Components.getCompilerWith(1, filters, sc.options, sc.compiler));
return {version: 4, content: [{type: 'row', content: content}]};
}
function loadState(state) {
if (!state || state.version === undefined) return false;
switch (state.version) {
case 1:
state.filterAsm = {};
state.version = 2;
/* falls through */
case 2:
state.compilers = [state];
state.version = 3;
/* falls through */
case 3:
state = convertOldState(state);
break; // no fall through
case 4:
state = GoldenLayout.unminifyConfig(state);
break;
default:
throw new Error("Invalid version '" + state.version + "'");
}
return state;
}
function risonify(obj) {
return rison.quote(rison.encode_object(obj));
}
function unrisonify(text) {
return rison.decode_object(decodeURIComponent(text.replace(/\+/g, '%20')));
}
function deserialiseState(stateText) {
var state;
var exception;
try {
state = unrisonify(stateText);
if (state && state.z) {
state = unrisonify(lzstring.decompressFromBase64(state.z));
}
} catch (ex) {
exception = ex;
}
if (!state) {
try {
state = $.parseJSON(decodeURIComponent(stateText));
} catch (ex) {
if (!exception) exception = ex;
}
}
if (!state && exception) throw exception;
return loadState(state);
}
function serialiseState(stateText) {
var ctx = GoldenLayout.minifyConfig({content: stateText.content});
ctx.version = 4;
var uncompressed = risonify(ctx);
var compressed = risonify({z: lzstring.compressToBase64(uncompressed)});
var MinimalSavings = 0.20; // at least this ratio smaller
if (compressed.length < uncompressed.length * (1.0 - MinimalSavings)) {
return compressed;
} else {
return uncompressed;
}
}
module.exports = {
deserialiseState: deserialiseState,
serialiseState: serialiseState,
unrisonify: unrisonify,
risonify: risonify
};