/** Push data into a stream. To be used by Espruino (not a user).
* This either calls the on('data') handler if it exists, or it
* puts the data in a buffer. This MAY CLAIM the string that is
* passed in.
*
* This will return true on success, or false if the buffer is
* full. Setting force=true will attempt to fill the buffer as
* full as possible, and will raise an error flag if data is lost.
*/
bool jswrap_stream_pushData(JsVar *parent, JsVar *dataString, bool force) {
assert(jsvIsObject(parent));
assert(jsvIsString(dataString));
bool ok = true;
JsVar *callback = jsvFindChildFromString(parent, STREAM_CALLBACK_NAME, false);
if (callback) {
if (!jsiExecuteEventCallback(parent, callback, dataString, 0)) {
jsError("Error processing Serial data handler - removing it.");
jsErrorFlags |= JSERR_CALLBACK;
jsvRemoveNamedChild(parent, STREAM_CALLBACK_NAME);
}
jsvUnLock(callback);
} else {
// No callback - try and add buffer
JsVar *buf = jsvObjectGetChild(parent, STREAM_BUFFER_NAME, 0);
if (!jsvIsString(buf)) {
// no buffer, just set this one up
jsvObjectSetChild(parent, STREAM_BUFFER_NAME, dataString);
} else {
// append (if there is room!)
size_t bufLen = jsvGetStringLength(buf);
size_t dataLen = jsvGetStringLength(dataString);
if (bufLen + dataLen > STREAM_MAX_BUFFER_SIZE) {
if (force) jsErrorFlags |= JSERR_BUFFER_FULL;
// jsWarn("String buffer overflowed maximum size (%d)", STREAM_MAX_BUFFER_SIZE);
ok = false;
}
if ((ok || force) && (bufLen < STREAM_MAX_BUFFER_SIZE))
jsvAppendStringVar(buf, dataString, 0, STREAM_MAX_BUFFER_SIZE-bufLen);
jsvUnLock(buf);
}
}
return ok;
}
void _jswrap_promise_reject(JsVar *promise, JsVar *data) {
JsVar *fn = jsvObjectGetChild(promise, JS_PROMISE_CATCH_NAME, 0);
jsiExecuteEventCallback(promise, fn, 1, &data);
jsvUnLock(fn);
}
