static bool handlePipe(JsVar *arr, JsvObjectIterator *it, JsVar* pipe) {
bool paused = jsvGetBoolAndUnLock(jsvObjectGetChild(pipe,"drainWait",0));
if (paused) return false;
JsVar *position = jsvObjectGetChild(pipe,"position",0);
JsVar *chunkSize = jsvObjectGetChild(pipe,"chunkSize",0);
JsVar *source = jsvObjectGetChild(pipe,"source",0);
JsVar *destination = jsvObjectGetChild(pipe,"destination",0);
bool dataTransferred = false;
if(source && destination && chunkSize && position) {
JsVar *readFunc = jspGetNamedField(source, "read", false);
JsVar *writeFunc = jspGetNamedField(destination, "write", false);
if (jsvIsFunction(readFunc) && jsvIsFunction(writeFunc)) { // do the objects have the necessary methods on them?
JsVar *buffer = jspExecuteFunction(readFunc, source, 1, &chunkSize);
if(buffer) {
JsVarInt bufferSize = jsvGetLength(buffer);
if (bufferSize>0) {
JsVar *response = jspExecuteFunction(writeFunc, destination, 1, &buffer);
if (jsvIsBoolean(response) && jsvGetBool(response)==false) {
// If boolean false was returned, wait for drain event (http://nodejs.org/api/stream.html#stream_writable_write_chunk_encoding_callback)
jsvUnLock(jsvObjectSetChild(pipe,"drainWait",jsvNewFromBool(true)));
}
jsvUnLock(response);
jsvSetInteger(position, jsvGetInteger(position) + bufferSize);
}
jsvUnLock(buffer);
dataTransferred = true; // so we don't close the pipe if we get an empty string
}
} else {
if(!jsvIsFunction(readFunc))
jsExceptionHere(JSET_ERROR, "Source Stream does not implement the required read(length) method.");
if(!jsvIsFunction(writeFunc))
jsExceptionHere(JSET_ERROR, "Destination Stream does not implement the required write(buffer) method.");
}
jsvUnLock(readFunc);
jsvUnLock(writeFunc);
}
if(!dataTransferred) { // when no more chunks are possible, execute the callback
handlePipeClose(arr, it, pipe);
}
jsvUnLock(source);
jsvUnLock(destination);
jsvUnLock(chunkSize);
jsvUnLock(position);
return dataTransferred;
}
static void handlePipeClose(JsVar *arr, JsvObjectIterator *it, JsVar* pipe) {
jsiQueueObjectCallbacks(pipe, "#oncomplete", &pipe, 1);
// also call 'end' if 'end' was passed as an initialisation option
if (jsvGetBoolAndUnLock(jsvObjectGetChild(pipe,"end",0))) {
// call destination.end if available
JsVar *destination = jsvObjectGetChild(pipe,"destination",0);
if (destination) {
// remove our drain and close listeners.
// TODO: This removes ALL listeners. Maybe we should just remove ours?
jswrap_object_removeAllListeners_cstr(destination, "drain");
jswrap_object_removeAllListeners_cstr(destination, "close");
// execute the 'end' function
JsVar *endFunc = jspGetNamedField(destination, "end", false);
if (endFunc) {
jsvUnLock(jspExecuteFunction(endFunc, destination, 0, 0));
jsvUnLock(endFunc);
}
// execute the 'close' function
JsVar *closeFunc = jspGetNamedField(destination, "close", false);
if (closeFunc) {
jsvUnLock(jspExecuteFunction(closeFunc, destination, 0, 0));
jsvUnLock(closeFunc);
}
jsvUnLock(destination);
}
/* call source.close if available - probably not what node does
but seems very sensible in this case. If you don't want it,
set end:false */
JsVar *source = jsvObjectGetChild(pipe,"source",0);
if (source) {
// TODO: This removes ALL listeners. Maybe we should just remove ours?
jswrap_object_removeAllListeners_cstr(source, "close");
// execute the 'close' function
JsVar *closeFunc = jspGetNamedField(source, "close", false);
if (closeFunc) {
jsvUnLock(jspExecuteFunction(closeFunc, source, 0, 0));
jsvUnLock(closeFunc);
}
}
jsvUnLock(source);
}
JsVar *idx = jsvObjectIteratorGetKey(it);
jsvRemoveChild(arr,idx);
jsvUnLock(idx);
}
void lcdSetPixel_JS(JsGraphics *gfx, short x, short y, unsigned int col) {
// look up setPixel and execute it!
// JsVar *lcdProto = jsvSkipNameAndUnLock(jsvFindChildFromString(gfx->graphicsVar, JSPARSE_PROTOTYPE_VAR, false));
// if (lcdProto) {
JsVar *setPixel = jsvSkipNameAndUnLock(jsvFindChildFromString(gfx->graphicsVar/*lcdProto*/, "setPixel", false));
if (setPixel) {
JsVar *args[3];
args[0] = jsvNewFromInteger(x);
args[1] = jsvNewFromInteger(y);
args[2] = jsvNewFromInteger(col);
jspExecuteFunction(jsiGetParser(), setPixel, gfx->graphicsVar, 3, args);
jsvUnLock(args[0]);
jsvUnLock(args[1]);
jsvUnLock(args[2]);
jsvUnLock(setPixel);
}
// jsvUnLock(lcdProto);
// }
}
void lcdFillRect_JS(struct JsGraphics *gfx, short x1, short y1, short x2, short y2) {
JsVar *fillRect = jsvObjectGetChild(gfx->graphicsVar/*lcdProto*/, "iFillRect", 0);
if (fillRect) {
JsVar *args[5];
args[0] = jsvNewFromInteger(x1);
args[1] = jsvNewFromInteger(y1);
args[2] = jsvNewFromInteger(x2);
args[3] = jsvNewFromInteger(y2);
args[4] = jsvNewFromInteger(gfx->data.fgColor);
jspExecuteFunction(fillRect, gfx->graphicsVar, 5, args);
jsvUnLock(args[0]);
jsvUnLock(args[1]);
jsvUnLock(args[2]);
jsvUnLock(args[3]);
jsvUnLock(args[4]);
jsvUnLock(fillRect);
} else
graphicsFallbackFillRect(gfx, x1,y1,x2,y2);
}
void lcdSetPixel_JS(JsGraphics *gfx, short x, short y, unsigned int col) {
// look up setPixel and execute it!
// JsVar *lcdProto = jsvObjectGetChild(gfx->graphicsVar, JSPARSE_PROTOTYPE_VAR, 0);
// if (lcdProto) {
JsVar *setPixel = jsvObjectGetChild(gfx->graphicsVar/*lcdProto*/, "iSetPixel", 0);
if (setPixel) {
JsVar *args[3];
args[0] = jsvNewFromInteger(x);
args[1] = jsvNewFromInteger(y);
args[2] = jsvNewFromInteger(col);
jspExecuteFunction(setPixel, gfx->graphicsVar, 3, args);
jsvUnLock(args[0]);
jsvUnLock(args[1]);
jsvUnLock(args[2]);
jsvUnLock(setPixel);
}
// jsvUnLock(lcdProto);
// }
}
void jsfGetJSONWithCallback(JsVar *var, JSONFlags flags, const char *whitespace, vcbprintf_callback user_callback, void *user_data) {
JSONFlags nflags = flags + JSON_INDENT; // if we add a newline, make sure we indent any subsequent JSON more
if (!whitespace) whitespace=" ";
if (jsvIsUndefined(var)) {
cbprintf(user_callback, user_data, "undefined");
} else {
// Use IS_RECURSING flag to stop recursion
if (var->flags & JSV_IS_RECURSING) {
cbprintf(user_callback, user_data, " ... ");
return;
}
var->flags |= JSV_IS_RECURSING;
if (jsvIsArray(var)) {
JsVarInt length = jsvGetArrayLength(var);
bool limited = (flags&JSON_LIMIT) && (length>(JsVarInt)JSON_LIMIT_AMOUNT);
bool needNewLine = false;
cbprintf(user_callback, user_data, (flags&JSON_PRETTY)?"[ ":"[");
JsVarInt lastIndex = -1;
bool numeric = true;
bool first = true;
JsvObjectIterator it;
jsvObjectIteratorNew(&it, var);
while (lastIndex+1<length && numeric && !jspIsInterrupted()) {
JsVar *key = jsvObjectIteratorGetKey(&it);
if (!jsvObjectIteratorHasValue(&it) || jsvIsNumeric(key)) {
JsVarInt index = jsvObjectIteratorHasValue(&it) ? jsvGetInteger(key) : length-1;
JsVar *item = jsvObjectIteratorGetValue(&it);
while (lastIndex < index) {
lastIndex++;
if (!limited || lastIndex<(JsVarInt)JSON_LIMITED_AMOUNT || lastIndex>=length-(JsVarInt)JSON_LIMITED_AMOUNT) {
if (!first) cbprintf(user_callback, user_data, (flags&JSON_PRETTY)?", ":",");
first = false;
if (limited && lastIndex==length-(JsVarInt)JSON_LIMITED_AMOUNT) cbprintf(user_callback, user_data, JSON_LIMIT_TEXT);
bool newNeedsNewLine = ((flags&JSON_SOME_NEWLINES) && jsonNeedsNewLine(item));
if (flags&JSON_ALL_NEWLINES) {
needNewLine = true;
newNeedsNewLine = true;
}
if (needNewLine || newNeedsNewLine) {
jsonNewLine(nflags, whitespace, user_callback, user_data);
needNewLine = false;
}
if (lastIndex == index)
jsfGetJSONWithCallback(item, nflags, whitespace, user_callback, user_data);
else
cbprintf(user_callback, user_data, (flags&JSON_NO_UNDEFINED)?"null":"undefined");
needNewLine = newNeedsNewLine;
}
}
jsvUnLock(item);
jsvObjectIteratorNext(&it);
} else {
numeric = false;
}
jsvUnLock(key);
}
// non-numeric - but NOT for standard JSON
if ((flags&JSON_PRETTY))
jsfGetJSONForObjectItWithCallback(&it, flags, whitespace, nflags, user_callback, user_data, first);
jsvObjectIteratorFree(&it);
if (needNewLine) jsonNewLine(flags, whitespace, user_callback, user_data);
cbprintf(user_callback, user_data, (flags&JSON_PRETTY)?" ]":"]");
} else if (jsvIsArrayBuffer(var)) {
JsvArrayBufferIterator it;
bool allZero = true;
jsvArrayBufferIteratorNew(&it, var, 0);
while (jsvArrayBufferIteratorHasElement(&it)) {
if (jsvArrayBufferIteratorGetFloatValue(&it)!=0)
allZero = false;
jsvArrayBufferIteratorNext(&it);
}
jsvArrayBufferIteratorFree(&it);
bool asArray = flags&JSON_ARRAYBUFFER_AS_ARRAY;
if (allZero && !asArray) {
cbprintf(user_callback, user_data, "new %s(%d)", jswGetBasicObjectName(var), jsvGetArrayBufferLength(var));
} else {
const char *aname = jswGetBasicObjectName(var);
/* You can't do `new ArrayBuffer([1,2,3])` so we have to output
* `new Uint8Array([1,2,3]).buffer`! */
bool isBasicArrayBuffer = strcmp(aname,"ArrayBuffer")==0;
if (isBasicArrayBuffer) {
aname="Uint8Array";
}
cbprintf(user_callback, user_data, asArray?"[":"new %s([", aname);
if (flags&JSON_ALL_NEWLINES) jsonNewLine(nflags, whitespace, user_callback, user_data);
size_t length = jsvGetArrayBufferLength(var);
bool limited = (flags&JSON_LIMIT) && (length>JSON_LIMIT_AMOUNT);
// no newlines needed for array buffers as they only contain simple stuff
jsvArrayBufferIteratorNew(&it, var, 0);
while (jsvArrayBufferIteratorHasElement(&it) && !jspIsInterrupted()) {
if (!limited || it.index<JSON_LIMITED_AMOUNT || it.index>=length-JSON_LIMITED_AMOUNT) {
if (it.index>0) cbprintf(user_callback, user_data, (flags&JSON_PRETTY)?", ":",");
if (flags&JSON_ALL_NEWLINES) jsonNewLine(nflags, whitespace, user_callback, user_data);
if (limited && it.index==length-JSON_LIMITED_AMOUNT) cbprintf(user_callback, user_data, JSON_LIMIT_TEXT);
JsVar *item = jsvArrayBufferIteratorGetValue(&it);
jsfGetJSONWithCallback(item, nflags, whitespace, user_callback, user_data);
jsvUnLock(item);
}
jsvArrayBufferIteratorNext(&it);
}
if (flags&JSON_ALL_NEWLINES) jsonNewLine(flags, whitespace, user_callback, user_data);
jsvArrayBufferIteratorFree(&it);
cbprintf(user_callback, user_data, asArray?"]":"])");
if (isBasicArrayBuffer && !asArray) cbprintf(user_callback, user_data, ".buffer");
}
} else if (jsvIsObject(var)) {
IOEventFlags device = (flags & JSON_SHOW_DEVICES) ? jsiGetDeviceFromClass(var) : EV_NONE;
if (device!=EV_NONE) {
cbprintf(user_callback, user_data, "%s", jshGetDeviceString(device));
} else {
bool showContents = true;
if (flags & JSON_SHOW_OBJECT_NAMES) {
JsVar *proto = jsvObjectGetChild(var, JSPARSE_INHERITS_VAR, 0);
if (jsvHasChildren(proto)) {
JsVar *constr = jsvObjectGetChild(proto, JSPARSE_CONSTRUCTOR_VAR, 0);
if (constr) {
JsVar *p = jsvGetIndexOf(execInfo.root, constr, true);
if (p) cbprintf(user_callback, user_data, "%v: ", p);
jsvUnLock2(p,constr);
/* We had the constructor - now if there was a non-default toString function
* we'll execute it and print the result */
JsVar *toStringFn = jspGetNamedField(var, "toString", false);
if (toStringFn && toStringFn->varData.native.ptr != (void (*)(void))jswrap_object_toString) {
// Function found and it's not the default one - execute it
JsVar *result = jspExecuteFunction(toStringFn,var,0,0);
cbprintf(user_callback, user_data, "%v", result);
jsvUnLock(result);
showContents = false; // we already printed something
}
jsvUnLock(toStringFn);
}
}
jsvUnLock(proto);
}
if (showContents) {
JsvObjectIterator it;
jsvObjectIteratorNew(&it, var);
cbprintf(user_callback, user_data, (flags&JSON_PRETTY)?"{ ":"{");
bool needNewLine = jsfGetJSONForObjectItWithCallback(&it, flags, whitespace, nflags, user_callback, user_data, true);
jsvObjectIteratorFree(&it);
if (needNewLine) jsonNewLine(flags, whitespace, user_callback, user_data);
cbprintf(user_callback, user_data, (flags&JSON_PRETTY)?" }":"}");
}
}
} else if (jsvIsFunction(var)) {
if (flags & JSON_IGNORE_FUNCTIONS) {
cbprintf(user_callback, user_data, "undefined");
} else {
cbprintf(user_callback, user_data, "function ");
jsfGetJSONForFunctionWithCallback(var, nflags, user_callback, user_data);
}
} else if (jsvIsString(var) && !jsvIsName(var)) {
if ((flags&JSON_LIMIT) && jsvGetStringLength(var)>JSON_LIMIT_STRING_AMOUNT) {
// if the string is too big, split it and put dots in the middle
JsVar *var1 = jsvNewFromStringVar(var, 0, JSON_LIMITED_STRING_AMOUNT);
JsVar *var2 = jsvNewFromStringVar(var, jsvGetStringLength(var)-JSON_LIMITED_STRING_AMOUNT, JSON_LIMITED_STRING_AMOUNT);
cbprintf(user_callback, user_data, "%q%s%q", var1, JSON_LIMIT_TEXT, var2);
jsvUnLock2(var1, var2);
} else {
cbprintf(user_callback, user_data, "%q", var);
}
} else {
cbprintf(user_callback, user_data, "%v", var);
}
var->flags &= ~JSV_IS_RECURSING;
}
}
static void handlePipeClose(JsVar *arr, JsvObjectIterator *it, JsVar* pipe) {
jsiQueueObjectCallbacks(pipe, "#oncomplete", &pipe, 1);
// Check the source to see if there was more data... It may not be a stream,
// but if it is and it has data it should have a a STREAM_BUFFER_NAME field
JsVar *source = jsvObjectGetChild(pipe,"source",0);
JsVar *destination = jsvObjectGetChild(pipe,"destination",0);
if (source && destination) {
JsVar *buffer = jsvObjectGetChild(source, STREAM_BUFFER_NAME, 0);
if (buffer && jsvGetStringLength(buffer)) {
jsvObjectSetChild(source, STREAM_BUFFER_NAME, 0); // remove outstanding data
/* call write fn - we ignore drain/etc here because the source has
just closed and we want to get this sorted quickly */
JsVar *writeFunc = jspGetNamedField(destination, "write", false);
if (jsvIsFunction(writeFunc)) // do the objects have the necessary methods on them?
jsvUnLock(jspExecuteFunction(writeFunc, destination, 1, &buffer));
jsvUnLock(writeFunc);
// update position
JsVar *position = jsvObjectGetChild(pipe,"position",0);
jsvSetInteger(position, jsvGetInteger(position) + (JsVarInt)jsvGetStringLength(buffer));
jsvUnLock(position);
}
jsvUnLock(buffer);
}
// also call 'end' if 'end' was passed as an initialisation option
if (jsvGetBoolAndUnLock(jsvObjectGetChild(pipe,"end",0))) {
// call destination.end if available
if (destination) {
// remove our drain and close listeners.
// TODO: This removes ALL listeners. Maybe we should just remove ours?
jswrap_object_removeAllListeners_cstr(destination, "drain");
jswrap_object_removeAllListeners_cstr(destination, "close");
// execute the 'end' function
JsVar *endFunc = jspGetNamedField(destination, "end", false);
if (endFunc) {
jsvUnLock(jspExecuteFunction(endFunc, destination, 0, 0));
jsvUnLock(endFunc);
}
// execute the 'close' function
JsVar *closeFunc = jspGetNamedField(destination, "close", false);
if (closeFunc) {
jsvUnLock(jspExecuteFunction(closeFunc, destination, 0, 0));
jsvUnLock(closeFunc);
}
}
/* call source.close if available - probably not what node does
but seems very sensible in this case. If you don't want it,
set end:false */
if (source) {
// TODO: This removes ALL listeners. Maybe we should just remove ours?
jswrap_object_removeAllListeners_cstr(source, "close");
// execute the 'close' function
JsVar *closeFunc = jspGetNamedField(source, "close", false);
if (closeFunc) {
jsvUnLock(jspExecuteFunction(closeFunc, source, 0, 0));
jsvUnLock(closeFunc);
}
}
}
jsvUnLock(source);
jsvUnLock(destination);
JsVar *idx = jsvObjectIteratorGetKey(it);
jsvRemoveChild(arr,idx);
jsvUnLock(idx);
}
/**
Iterate over the contents of the content of a variable, calling callback for each.
Contents may be:
* numeric -> output
* a string -> output each character
* array/arraybuffer -> call itself on each element
* {data:..., count:...} -> call itself object.count times, on object.data
* {callback:...} -> call the given function, call itself on return value
*/
bool jsvIterateCallback(
JsVar *data,
jsvIterateCallbackFn callback,
void *callbackData
) {
bool ok = true;
// Handle the data being a single numeric.
if (jsvIsNumeric(data)) {
callback((int)jsvGetInteger(data), callbackData);
}
// Handle the data being an object.
else if (jsvIsObject(data)) {
JsVar *callbackVar = jsvObjectGetChild(data, "callback", 0);
if (jsvIsFunction(callbackVar)) {
JsVar *result = jspExecuteFunction(callbackVar,0,0,NULL);
jsvUnLock(callbackVar);
if (result) {
bool r = jsvIterateCallback(result, callback, callbackData);
jsvUnLock(result);
return r;
}
return true;
}
jsvUnLock(callbackVar);
JsVar *countVar = jsvObjectGetChild(data, "count", 0);
JsVar *dataVar = jsvObjectGetChild(data, "data", 0);
if (countVar && dataVar && jsvIsNumeric(countVar)) {
int n = (int)jsvGetInteger(countVar);
while (ok && n-- > 0) {
ok = jsvIterateCallback(dataVar, callback, callbackData);
}
} else {
jsExceptionHere(JSET_TYPEERROR, "If specifying an object, it must be of the form {data : ..., count : N} or {callback : fn} - got %j", data);
ok = false;
}
jsvUnLock2(countVar, dataVar);
}
// Handle the data being a string
else if (jsvIsString(data)) {
JsvStringIterator it;
jsvStringIteratorNew(&it, data, 0);
while (jsvStringIteratorHasChar(&it) && ok) {
char ch = jsvStringIteratorGetChar(&it);
callback(ch, callbackData);
jsvStringIteratorNext(&it);
}
jsvStringIteratorFree(&it);
}
// Handle the data being an array buffer
else if (jsvIsArrayBuffer(data)) {
JsvArrayBufferIterator it;
jsvArrayBufferIteratorNew(&it, data, 0);
if (JSV_ARRAYBUFFER_GET_SIZE(it.type) == 1 && !JSV_ARRAYBUFFER_IS_SIGNED(it.type)) {
JsvStringIterator *sit = &it.it;
// faster for single byte arrays - read using the string iterator.
while (jsvStringIteratorHasChar(sit)) {
callback((int)(unsigned char)jsvStringIteratorGetChar(sit), callbackData);
jsvStringIteratorNextInline(sit);
}
} else {
while (jsvArrayBufferIteratorHasElement(&it)) {
callback((int)jsvArrayBufferIteratorGetIntegerValue(&it), callbackData);
jsvArrayBufferIteratorNext(&it);
}
}
jsvArrayBufferIteratorFree(&it);
}
// Handle the data being iterable
else if (jsvIsIterable(data)) {
JsvIterator it;
jsvIteratorNew(&it, data, JSIF_EVERY_ARRAY_ELEMENT);
while (jsvIteratorHasElement(&it) && ok) {
JsVar *el = jsvIteratorGetValue(&it);
ok = jsvIterateCallback(el, callback, callbackData);
jsvUnLock(el);
jsvIteratorNext(&it);
}
jsvIteratorFree(&it);
} else {
jsExceptionHere(JSET_TYPEERROR, "Expecting a number or something iterable, got %t", data);
ok = false;
}
return ok;
}
