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snapin8r2.js
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snapin8r2.js
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/*
Snapin8r2
Based on the original Snapin8r by Hardmath123
Rewritten to (hopefully) work better by djdolphin
*/
/* jshint bitwise: false, unused: true */
/* globals JSZip */
(function () {
'use strict';
/* Main Snapin8r object */
function Snapin8r (file, projectName, callback) {
this.file = file;
this.zip = null;
this.projectName = projectName;
this.callback = callback;
this.warnings = [];
}
Snapin8r.prototype.convert = function () {
var myself = this;
var jsonData;
try {
this.zip = new JSZip(this.file);
jsonData = JSON.parse(this.zip.file('project.json').asText());
} catch (err) {
return this.callback(err);
}
// Project info
var project = el('project');
project.setAttribute('name', this.projectName);
project.setAttribute('app', 'Snapin8r2');
project.setAttribute('version', 1);
project.appendChild(el('notes', null, 'Converted by Snapin8r2.'));
project.appendChild(el('thumbnail'));
// Global variables
var vars = el('variables');
var varNames = [];
if ('variables' in jsonData || 'lists' in jsonData) {
vars = convertVariables(jsonData, varNames);
}
// Convert the stage
ScriptableConverter.convert(
jsonData, this, true, varNames,
function (err, stage) {
if (err) return myself.callback(err);
project.appendChild(stage);
project.appendChild(el('hidden'));
project.appendChild(el('headers'));
project.appendChild(el('code'));
project.appendChild(el('blocks'));
project.appendChild(vars);
myself.callback(
null,
project.outerHTML,
myself.warnings.length > 0 ? myself.warnings : null
);
}
);
};
Snapin8r.prototype.warn = function (warning) {
this.warnings.push(warning);
};
/* Actual exported function */
window.Snapin8r = function (file, projectName, callback) {
new Snapin8r(file, projectName, callback).convert();
};
/* Individual translations for blocks, arguments, and other things */
var lib = {};
// Regular blocks
lib.blocks = {
'forward:': 'forward',
'turnRight:': 'turn',
'turnLeft:': 'turnLeft',
'heading:': 'setHeading',
'pointTowards:': 'doFaceTowards',
'gotoX:y:': 'gotoXY',
'gotoSpriteOrMouse:': 'doGotoObject',
'glideSecs:toX:y:elapsed:from:': 'doGlide',
'changeXposBy:': 'changeXPosition',
'xpos:': 'setXPosition',
'changeYposBy:': 'changeYPosition',
'ypos:': 'setYPosition',
bounceOffEdge: 'bounceOffEdge',
// setRotationStyle: '',
xpos: 'xPosition',
ypos: 'yPosition',
heading: 'direction',
'say:duration:elapsed:from:': 'doSayFor',
'say:': 'bubble',
'think:duration:elapsed:from:': 'doThinkFor',
'think:': 'doThink',
show: 'show',
hide: 'hide',
'lookLike:': 'doSwitchToCostume',
nextCostume: 'doWearNextCostume',
'changeGraphicEffect:by:': 'changeEffect',
'setGraphicEffect:to:': 'setEffect',
filterReset: 'clearEffects',
'changeSizeBy:': 'changeScale',
'setSizeTo:': 'setScale',
comeToFront: 'comeToFront',
'goBackByLayers:': 'goBack',
costumeIndex: 'getCostumeIdx',
scale: 'getScale',
// startSceneAndWait: '',
'playSound:': 'playSound',
doPlaySoundAndWait: 'doPlaySoundUntilDone',
stopAllSounds: 'doStopAllSounds',
// playDrum: '',
'rest:elapsed:from:': 'doRest',
'noteOn:duration:elapsed:from:': 'doPlayNote',
// 'instrument:': '',
// 'changeVolumeBy:': '',
// 'setVolumeTo:': '',
// volume: '',
'changeTempoBy:': 'doChangeTempo',
'setTempoTo:': 'doSetTempo',
tempo: 'getTempo',
clearPenTrails: 'clear',
stampCostume: 'doStamp',
putPenDown: 'down',
putPenUp: 'up',
'penColor:': 'setColor',
'changePenHueBy:': 'changeHue',
'setPenHueTo:': 'setHue',
'changePenShadeBy:': 'changeBrightness',
'setPenShadeTo:': 'setBrightness',
'changePenSizeBy:': 'changeSize',
'penSize:': 'setSize',
whenGreenFlag: 'receiveGo',
whenKeyPressed: 'receiveKey',
// whenSceneStarts: '',
// whenSensorGreaterThan: '',
whenIReceive: 'receiveMessage',
'broadcast:': 'doBroadcast',
doBroadcastAndWait: 'doBroadcastAndWait',
'wait:elapsed:from:': 'doWait',
doRepeat: 'doRepeat',
doForever: 'doForever',
doIf: 'doIf',
doIfElse: 'doIfElse',
doWaitUntil: 'doWaitUntil',
doUntil: 'doUntil',
whenCloned: 'receiveOnClone',
createCloneOf: 'createClone',
deleteClone: 'removeClone',
'touching:': 'reportTouchingObject',
'touchingColor:': 'reportTouchingColor',
'color:sees:': 'reportColorIsTouchingColor',
'distanceTo:': 'reportDistanceTo',
doAsk: 'doAsk',
answer: 'getLastAnswer',
'keyPressed:': 'reportKeyPressed',
mousePressed: 'reportMouseDown',
mouseX: 'reportMouseX',
mouseY: 'reportMouseY',
// soundLevel: '',
// senseVideoMotion: '',
// setVideoState: '',
// setVideoTransparency: '',
timer: 'getTimer',
timerReset: 'doResetTimer',
'getAttribute:of:': 'reportAttributeOf',
timeAndDate: 'reportDate',
// timestamp: '',
// getUserName: '',
'+': 'reportSum',
'-': 'reportDifference',
'*': 'reportProduct',
'/': 'reportQuotient',
'randomFrom:to:': 'reportRandom',
'<': 'reportLessThan',
'=': 'reportEquals',
'>': 'reportGreaterThan',
'&': 'reportAnd',
'|': 'reportOr',
not: 'reportNot',
'letter:of:': 'reportLetter',
'stringLength:': 'reportStringSize',
'%': 'reportModulus',
rounded: 'reportRound',
'computeFunction:of:': 'reportMonadic',
'setVar:to:': 'doSetVar',
'changeVar:by:': 'doChangeVar',
'showVariable:': 'doShowVar',
'hideVariable:': 'doHideVar',
'append:toList:': 'doAddToList',
'deleteLine:ofList:': 'doDeleteFromList',
'insert:at:ofList:': 'doInsertInList',
'setLine:ofList:to:': 'doReplaceInList',
'getLine:ofList:': 'reportListItem',
'lineCountOfList:': 'reportListLength',
'list:contains:': 'reportListContainsItem',
'showList:': 'doShowVar',
'hideList:': 'doHideVar'
};
// Specially handled blocks
lib.specialCaseBlocks = {};
lib.specialCaseBlocks.readVariable = function (args) {
return el('block', {var: args[0]});
};
lib.specialCaseBlocks['contentsOfList:'] = function (args) { // temporary workaround
return el('block', {s: 'reportJoinWords'},
el('block', {var: args[0]})
);
};
lib.specialCaseBlocks.getParam = function (args, obj, customBlock) {
var param = args[0];
if (customBlock) {
param = obj.paramConversions[customBlock][param];
}
return el('block', {var: param});
};
lib.specialCaseBlocks.call = function (args, obj, customBlock) {
var spec = convertCustomBlockSpec(args[0]);
args = args.slice(1);
var result = el('custom-block', {s: spec, scope: obj.data.objName});
for (var i = 0, l = args.length; i < l; i++) {
result.appendChild(obj.convertArg(args[i], null, null, customBlock));
}
return result;
};
lib.specialCaseBlocks.startScene = function (args, obj, customBlock) {
var backdrop = args[0];
var result;
if (backdrop === 'next backdrop') {
result = el('block', {s: 'doWearNextCostume'});
} else if (backdrop === 'previous backdrop') {
result = el('block', {s: 'doSwitchToCostume'},
el('block', {s: 'reportDifference'}, [
el('l', null, 0),
el('l', null, 1)
])
);
} else {
result = el('block', {s: 'doSwitchToCostume'},
obj.convertArg(backdrop, null, null, customBlock)
);
}
if (!obj.isStage) result = convertBlockForStage(result);
return result;
};
lib.specialCaseBlocks.nextScene = function (args, obj) {
var result = el('block', {s: 'doWearNextCostume'});
if (!obj.isStage) result = convertBlockForStage(result);
return result;
};
lib.specialCaseBlocks.sceneName = function () {
return el('block', {s: 'reportAttributeOf'}, [
el('l', null,
el('option', null, 'costume name')
),
el('l', null, 'Stage')
]);
};
lib.specialCaseBlocks.backgroundIndex = function (args, obj) {
if (obj.isStage) {
return el('block', {s: 'getCostumeIdx'});
}
return el('block', {s: 'reportAttributeOf'}, [
el('l', null,
el('option', null, 'costume #')
),
el('l', null, 'Stage')
]);
};
lib.specialCaseBlocks.whenClicked = function () {
return el('block', {s: 'receiveInteraction'},
el('l', null,
el('option', null, 'pressed')
)
);
};
lib.specialCaseBlocks.stopScripts = function (args, obj, customBlock) {
var stopThisOptions = ['all', 'this script', 'this block'];
var stopOthersOptions = ['other scripts in sprite', 'other scripts in stage'];
var arg = args[0];
if (customBlock && arg === 'this script') arg = 'this block';
if (stopThisOptions.indexOf(arg) > -1) {
return el('block', {s: 'doStopThis'},
el('l', null,
el('option', null, arg)
)
);
}
if (stopOthersOptions.indexOf(arg) > -1) {
return el('block', {s: 'doStopOthers'},
el('l', null,
el('option', null, 'other scripts in sprite')
)
);
}
obj.s.warn('Unknown stop argument: ' + arg);
return null;
};
lib.specialCaseBlocks['concatenate:with:'] = function (args, obj, customBlock) {
return el('block', {s: 'reportJoinWords'},
el('list', null, [
obj.convertArg(args[0], null, null, customBlock),
obj.convertArg(args[1], null, null, customBlock)
])
);
};
function convertBlockForStage (block) {
return el('block', {s: 'doRun'}, [
el('block', {s: 'reportAttributeOf'}, [
el('block', {s: 'reifyScript'}, [
el('script', null, block),
el('list')
]),
el('l', null, 'Stage')
]),
el('list')
]);
}
lib.customBlockSpecCache = {}; // Cache of converted custom block specs
// Special argument types
lib.cArgs = {
doRepeat: [1],
doForever: [0],
doIf: [1],
doIfElse: [1, 2],
doUntil: [1]
};
lib.listArgs = {
doAddToList: [1],
doDeleteFromList: [1],
doInsertInList: [2],
doReplaceInList: [1],
reportListItem: [1],
reportListLength: [0],
reportListContainsItem: [0]
};
lib.colorArgs = {
setColor: [0],
reportTouchingColor: [0],
reportColorIsTouchingColor: [0, 1]
};
lib.optionArgs = {
changeEffect: [0],
setEffect: [0],
reportDate: [0],
doDeleteFromList: [0]
};
lib.specialCaseArgs = {
doFaceTowards: {},
doGotoObject: {},
receiveKey: {},
createClone: {},
reportTouchingObject: {},
reportDistanceTo: {},
reportKeyPressed: {},
reportAttributeOf: {},
reportMonadic: {},
reportListItem: {},
doInsertInList: {},
doReplaceInList: {}
};
lib.specialCaseArgs.doFaceTowards[0] =
lib.specialCaseArgs.doGotoObject[0] =
lib.specialCaseArgs.reportDistanceTo[0] = function (arg) {
return handleObjArg(arg, ['_mouse_']);
};
lib.specialCaseArgs.createClone[0] = function (arg) {
return handleObjArg(arg, ['_myself_']);
};
lib.specialCaseArgs.reportTouchingObject[0] = function (arg) {
return handleObjArg(arg, ['_mouse_', '_edge_']);
};
lib.specialCaseArgs.reportAttributeOf[1] = function (arg) {
return handleObjArg(arg, ['_stage_']);
};
function handleObjArg (arg, choices) {
if (choices.indexOf(arg) > -1) {
return el('l', null,
el('option', null, lib.specialObjNames[arg])
);
}
return el('l', null, arg);
}
lib.specialCaseArgs.receiveKey[0] =
lib.specialCaseArgs.reportKeyPressed[0] = function (arg) {
if (arg === 'any') arg = 'any key';
return el('l', null,
el('option', null, arg)
);
};
lib.specialCaseArgs.reportAttributeOf[0] = function (arg, obj) {
var options = obj.isStage ? ['costume #', 'costume name'] :
['x position', 'y position', 'direction', 'costume #', 'costume name', 'size'];
if (obj.isStage) {
if (arg === 'backdrop #' || arg === 'background #') arg = 'costume #';
if (arg === 'backdrop name') arg = 'costume name';
}
if (options.indexOf(arg) > -1) {
return el('l', null,
el('option', null, arg)
);
}
if (arg === 'volume') {
obj.s.warn('Unsupported attribute: volume');
return null;
}
return el('l', null, arg);
};
lib.specialCaseArgs.reportMonadic[0] = function (arg) {
arg = arg.replace(/ \^$/, '^');
return el('l', null,
el('option', null, arg)
);
};
lib.specialCaseArgs.reportListItem[0] =
lib.specialCaseArgs.doInsertInList[1] =
lib.specialCaseArgs.doReplaceInList[0] = function (arg) {
if (arg === 'random' || arg === 'any') {
return el('l', null,
el('option', null, 'any')
);
}
return el('l', null, arg);
};
// Other things
lib.specialObjNames = {
_edge_: 'edge',
_mouse_: 'mouse-pointer',
_myself_: 'myself',
_stage_: 'Stage'
};
lib.rotationStyles = {
normal: 1,
leftRight: 2,
none: 0
};
lib.watchers = {
costumeIndex: 'getCostumeIdx',
xpos: 'xPosition',
ypos: 'yPosition',
heading: 'direction',
scale: 'getScale',
backgroundIndex: 'getCostumeIdx',
tempo: 'getTempo',
answer: 'getLastAnswer',
timer: 'getTimer'
};
lib.watcherStyles = {
1: 'normal',
2: 'large',
3: 'slider'
};
lib.fonts = {
'': 'Helvetica',
Donegal: 'Donegal One',
Gloria: 'Gloria Hallelujah',
Marker: 'Permanent Marker',
Mystery: 'Mystery Quest'
};
lib.lineHeights = {
Helvetica: 1.13,
'Donegal One': 1.25,
'Gloria Hallelujah': 1.97,
'Permanent Marker': 1.43,
'Mystery Quest': 1.37
};
lib.mimeTypes = {
gif: 'image/gif',
jpg: 'image/jpeg',
png: 'image/png',
svg: 'image/svg+xml',
wav: 'audio/x-wav',
mp3: 'audio/mpeg'
};
/* Stage and sprite conversion */
function ScriptableConverter (data, s, isStage, varNames, callback) {
this.data = data;
this.s = s;
this.isStage = isStage;
this.varNames = varNames.slice(0);
this.paramConversions = {};
this.blockComments = [];
this.lastBlockID = -1;
this.callback = callback;
if (!isStage && data.objName === 'Stage') {
throw new Error('A sprite cannot have the name "Stage"');
}
}
ScriptableConverter.prototype.convert = function () {
var myself = this;
var result = this.result = el(this.isStage ? 'stage' : 'sprite');
var data = this.data;
// Attributes are in the order they appear in Snap! XML files.
result.setAttribute('name', data.objName);
if (this.isStage) { // Stage-only
result.setAttribute('width', 480);
result.setAttribute('height', 360);
} else { // sprite-only
result.setAttribute('idx', data.indexInLibrary);
result.setAttribute('x', data.scratchX);
result.setAttribute('y', data.scratchY);
result.setAttribute('heading', data.direction);
result.setAttribute('scale', data.scale);
result.setAttribute('rotation', lib.rotationStyles[data.rotationStyle] || 0);
result.setAttribute('draggable', data.isDraggable);
if (!data.visible) {
result.setAttribute('hidden', true);
}
}
result.setAttribute('costume', data.currentCostumeIndex + 1);
if ('tempoBPM' in data) {
result.setAttribute('tempo', data.tempoBPM);
}
if (this.isStage) { // Stage-only
result.setAttribute('threadsafe', false);
result.setAttribute('lines', 'round');
result.setAttribute('codify', false);
result.setAttribute('scheduled', true);
result.appendChild(
el('pentrails', null, getAsset(data.penLayerID, data.penLayerMD5, this.s.zip))
);
} else { // sprite-only
result.setAttribute('color', '0,0,255'); // Scratch's default pen color
result.setAttribute('pen', 'middle');
}
// Convert media, variables, and scripts
this.convertCostumes(function (err) {
if (err) return myself.callback(err);
try {
myself.convertSounds();
myself.convertVariables();
myself.convertScripts();
} catch (error) {
return myself.callback(error);
}
if (myself.isStage) {
// Convert sprites and watchers
myself.convertChildren(function (err) {
if (err) myself.callback(err);
else myself.callback(null, myself.result);
});
} else {
myself.callback(null, myself.result);
}
});
};
// Costume conversion
ScriptableConverter.prototype.convertCostumes = function (callback) {
var myself = this;
var costumes = this.data.costumes;
var result = el('list');
if (costumes) {
AsyncLoop.loop(
costumes.length,
function (loop) {
var costume = costumes[loop.index];
myself.convertCostume(
costume,
function (err, costume) {
if (err) return callback(err);
result.appendChild(el('item', null, costume));
loop.next();
}
);
},
function () {
myself.result.appendChild(el('costumes', null, result));
callback();
}
);
}
};
ScriptableConverter.prototype.convertCostume = function (costume, callback) {
var resolution = costume.bitmapResolution;
try {
var image = getAsset(costume.baseLayerID, costume.baseLayerMD5, this.s.zip);
if (resolution === 1) {
if ('text' in costume) {
// Text in costumes converted from Scratch 1.4 is stored in
// a separate layer.
var text = getAsset(costume.textLayerID, costume.textLayerMD5, this.s.zip);
addTextLayer(image, text, createXML);
} else {
createXML(image);
}
} else {
// Scratch stores bitmap images at double the actual size.
resizeImage(image, 1 / resolution, createXML);
}
} catch (err) {
callback(err);
}
function createXML (image) {
var result = el('costume');
result.setAttribute('name', costume.costumeName);
result.setAttribute('center-x', costume.rotationCenterX / resolution);
result.setAttribute('center-y', costume.rotationCenterY / resolution);
result.setAttribute('image', image);
callback(null, result);
}
};
// Sound conversion
ScriptableConverter.prototype.convertSounds = function () {
var sounds = this.data.sounds;
var result = el('list');
if (sounds) {
for (var i = 0, l = sounds.length; i < l; i++) {
result.appendChild(el('item', null, this.convertSound(sounds[i])));
}
}
this.result.appendChild(el('sounds', null, result));
};
ScriptableConverter.prototype.convertSound = function (sound) {
var result = el('sound');
result.setAttribute('name', sound.soundName);
result.setAttribute('sound', getAsset(sound.soundID, sound.md5, this.s.zip));
return result;
};
ScriptableConverter.prototype.convertVariables = function () {
var vars = el('variables');
if (!this.isStage && ('variables' in this.data || 'lists' in this.data)) {
vars = convertVariables(this.data, this.varNames);
}
this.result.appendChild(vars);
};
// Separate and convert scripts, custom blocks, and comments
ScriptableConverter.prototype.convertScripts = function () {
var commentsData = this.data.scriptComments;
var scriptsData = this.data.scripts;
var blocks = el('blocks');
var scripts = el('scripts');
var i, l;
if (commentsData) {
for (i = 0, l = commentsData.length; i < l; i++) {
var comment = commentsData[i];
// Comments attached to blocks are sorted out and added to the
// correct blocks later.
var blockID = comment[5];
if (blockID > -1) {
this.blockComments[blockID] = convertComment(comment);
} else {
scripts.appendChild(convertComment(comment));
}
}
}
if (scriptsData) {
for (i = 0, l = scriptsData.length; i < l; i++) {
var scriptData = scriptsData[i];
if (scriptData[2][0][0] === 'procDef') { // custom block definition
blocks.appendChild(this.convertCustomBlock(scriptData[2]));
} else {
var script = this.convertScript(scriptData);
if (script) scripts.appendChild(script);
}
}
}
this.result.appendChild(blocks);
this.result.appendChild(scripts);
};
// Convert sprites and watchers
ScriptableConverter.prototype.convertChildren = function (callback) {
var myself = this;
var children = this.data.children;
var result = el('sprites');
AsyncLoop.loop(
children.length,
function (loop) {
var child = children[loop.index];
if ('objName' in child) { // sprite
ScriptableConverter.convert(
child, myself.s, false, myself.varNames,
function (err, sprite) {
if (err) return callback(err);
result.appendChild(sprite);
loop.next();
}
);
} else {
if ('sliderMin' in child) { // watcher
var watcher = convertWatcher(child, myself.s);
if (watcher) result.appendChild(watcher);
}
loop.next();
}
},
function () {
convertListWatchers(myself.data);
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i];
if ('objName' in child) convertListWatchers(child);
}
myself.result.appendChild(result);
callback();
}
);
function convertListWatchers (data) {
if ('lists' in data) {
for (var i = 0, l = data.lists.length; i < l; i++) {
result.appendChild(convertListWatcher(data.lists[i], data.objName));
}
}
}
};
// Script, block, and argument conversion
ScriptableConverter.prototype.convertScript = function (script, embedded, customBlock) {
var result = el('script');
var blocks;
if (script) {
if (!embedded) {
result.setAttribute('x', script[0]);
result.setAttribute('y', script[1]);
blocks = script[2];
} else {
blocks = script;
}
for (var i = 0, l = blocks.length; i < l; i++) {
var block = this.convertBlock(blocks[i], customBlock);
if (block) result.appendChild(block);
}
}
if (!embedded && result.children.length === 0) return null;
return result;
};
ScriptableConverter.prototype.convertBlock = function (block, customBlock) {
this.lastBlockID += 1
var blockID = this.lastBlockID;
var selector = block[0];
var args = block.slice(1);
var result;
if (lib.blocks[selector]) {
selector = lib.blocks[selector];
result = el('block', {s: selector});
for (var i = 0, l = args.length; i < l; i++) {
var arg = this.convertArg(args[i], selector, i, customBlock);
if (arg) result.appendChild(arg);
else return null;
}
} else if (lib.specialCaseBlocks[selector]) {
result = lib.specialCaseBlocks[selector](args, this, customBlock);
} else {
this.s.warn('Unknown block selector: ' + selector);
return null;
}
if (this.blockComments[blockID]) {
result.appendChild(this.blockComments[blockID]);
}
return result;
};
ScriptableConverter.prototype.convertArg = function (arg, selector, index, customBlock) {
if (selector && lib.cArgs[selector] && lib.cArgs[selector].indexOf(index) > -1) { // C input
return this.convertScript(arg, true, customBlock);
}
if (arg.constructor === Array) { // reporter
return this.convertBlock(arg, customBlock) || el('l');
}
if (selector) {
if (lib.listArgs[selector] && lib.listArgs[selector].indexOf(index) > -1) { // list input
return el('block', {var: arg});
}
if (lib.colorArgs[selector] && lib.colorArgs[selector].indexOf(index) > -1) { // color input
return el('color', null, convertColor(arg));
}
if (lib.optionArgs[selector] && lib.optionArgs[selector].indexOf(index) > -1 && typeof arg !== 'number') {
// option input
return el('l', null,
el('option', null, arg)
);
}
if (lib.specialCaseArgs[selector] && lib.specialCaseArgs[selector][index]) { // special case
return lib.specialCaseArgs[selector][index](arg, this);
}
}
return el('l', null, arg); // regular input
};
// Custom block definition conversion
ScriptableConverter.prototype.convertCustomBlock = function (blocks) {
this.lastBlockID += 1
var blockID = this.lastBlockID;
var definition = blocks[0];
var spec = convertCustomBlockSpec(definition[1]);
var oldParamNames = definition[2];
var defaultArgs = definition[3];
var atomic = definition[4];
// Snap! doesn't differentiate between parameters and variables, so
// numbers are added to the end of parameters with the same names as
// variables. Snap! also doesn't allow ' in parameter names. :'(
var paramConversions = this.paramConversions[spec] = {};
var varNames = this.varNames.slice(0);
var paramNames = [];
for (var i = 0, l = oldParamNames.length; i < l; i++) {
var oldParam = oldParamNames[i];
var newParam = unusedName(oldParam.replace(/'/g, ''), varNames);
varNames.push(newParam);
paramNames.push(newParam);
paramConversions[oldParam] = newParam;
}
var specParts = spec.split(' ');
var spec2 = '';
var inputs = el('inputs');
var inputIndex = -1;
for (i = 0, l = specParts.length; i < l; i++) {
var part = specParts[i];
if (i !== 0) spec2 += ' ';
if (part.charAt(0) !== '%') {
spec2 += part;
} else {
inputIndex += 1;
spec2 += "%'" + paramNames[inputIndex] + "'";
inputs.appendChild(
el('input', {type: part}, defaultArgs[inputIndex])
);
}
}
this.lastBlockID += paramNames.length + 1; // accounts for a bug in Scratch
var script = this.convertScript(blocks.slice(1), true, spec);
if (atomic) {
script = el('script', null,
el('block', {s: 'doWarp'}, script)
);
}
var result = el('block-definition');
result.setAttribute('s', spec2);
result.setAttribute('type', 'command');
result.setAttribute('category', 'other');
if (this.blockComments[blockID]) {
result.appendChild(this.blockComments[blockID]);
}
result.appendChild(el('header'));
result.appendChild(el('code'));
result.appendChild(inputs);
if (script.children.length > 0) result.appendChild(script);
return result;
};
function convertCustomBlockSpec (spec) {
// Snap! escapes different characters in custom block specs than Scratch
// does, so they have to be fixed. The fixed versions are cached so they
// don't have to be found repeatedly.
var argTypes = ['b', 'n', 's'];
if (lib.customBlockSpecCache.hasOwnProperty(spec)) {
return lib.customBlockSpecCache[spec];
}
var result = spec.split(' ');
result.map(function (part) {
if (part.charAt(0) === '%') { // argument
if (argTypes.indexOf(part.slice(1)) > -1) return part;
throw new Error('Invalid custom block argument type: ' + part);
}
return part.replace(/\\(.)/g, '$1').replace(/^[\\%$]/, '\\$&');
});
return result.join(' ');
}
// Shorthand for new ScriptableConverter(...).convert()
ScriptableConverter.convert = function (data, s, isStage, varNames, callback) {
try {
var converter = new ScriptableConverter(data, s, isStage, varNames, callback);
converter.convert();
} catch (err) {
callback(err);
}
};
/* Variable and list conversion */
function convertVariables (data, varNames) {
var variables = data.variables;
var lists = data.lists;
var result = el('variables');
var i, l;
if (variables) {
for (i = 0, l = variables.length; i < l; i++) {
var variable = variables[i];
varNames.push(variable.name);
result.appendChild(
el('variable', {name: variable.name},
el('l', null, variable.value)
)
);
}
}
if (lists) {
for (i = 0, l = lists.length; i < l; i++) {
var list = lists[i];
varNames.push(list.listName);
var listXML = el('list');
for (var j = 0, k = list.contents.length; j < k; j++) {
listXML.appendChild(
el('item', null,
el('l', null, list.contents[j])
)
);
}
result.appendChild(el('variable', {name: list.listName}, listXML));
}
}
return result;
}
function convertWatcher (watcher, s) {
var result = el('watcher');
if (watcher.cmd === 'getVar:') {
if (watcher.target !== 'Stage') {
result.setAttribute('scope', watcher.target);