/*
Read data bytes from a file. If offset is < 0, then append to the write position.
function read(buffer: ByteArray, offset: Number = 0, count: Number = -1): Number
*/
static EjsNumber *readFile(Ejs *ejs, EjsFile *fp, int argc, EjsObj **argv)
{
EjsByteArray *buffer;
MprPath info;
ssize offset, count, totalRead;
assert(1 <= argc && argc <= 3);
buffer = (EjsByteArray*) argv[0];
offset = (argc >= 2) ? ejsGetInt(ejs, argv[1]): 0;
count = (argc >= 3) ? ejsGetInt(ejs, argv[2]): -1;
if (fp->file == 0) {
ejsThrowStateError(ejs, "File not open");
return 0;
}
if (!(fp->mode & EJS_FILE_READ)) {
ejsThrowStateError(ejs, "File not opened for reading");
return 0;
}
if (offset >= buffer->size) {
ejsThrowOutOfBoundsError(ejs, "Bad read offset value");
return 0;
}
if (offset < 0) {
offset = buffer->writePosition;
} else if (offset == 0) {
ejsSetByteArrayPositions(ejs, buffer, 0, 0);
}
if (count < 0) {
// TODO OPT could this be cached in fp->info
if (mprGetPathInfo(fp->path, &info) == 0) {
count = (int) info.size;
count -= (int) mprGetFilePosition(fp->file);
} else {
count = ME_MAX_BUFFER;
}
assert(count >= 0);
}
totalRead = readData(ejs, fp, buffer, offset, count);
if (totalRead < 0) {
return 0;
} else if (totalRead == 0) {
return ESV(zero);
}
ejsSetByteArrayPositions(ejs, buffer, -1, offset + totalRead);
return ejsCreateNumber(ejs, (MprNumber) totalRead);
}
/*
function read(buffer: ByteArray, offset: Number = 0, count: Number = -1): Number
Returns a count of bytes read. Non-blocking if a callback is defined. Otherwise, blocks.
Offset: -1 then read to the buffer write position, >= 0 then read to that offset
count: -1 then read as much as the buffer will hold. If buffer is growable, read all content. If not growable,
read the buffer size. If count >= 0, then read that number of bytes.
*/
static EjsNumber *http_read(Ejs *ejs, EjsHttp *hp, int argc, EjsObj **argv)
{
EjsByteArray *buffer;
HttpConn *conn;
MprOff contentLength;
ssize offset, count;
conn = hp->conn;
buffer = (EjsByteArray*) argv[0];
offset = (argc >= 2) ? ejsGetInt(ejs, argv[1]) : 0;
count = (argc >= 3) ? ejsGetInt(ejs, argv[2]): -1;
if (!waitForResponseHeaders(hp)) {
return 0;
}
contentLength = httpGetContentLength(conn);
if (conn->state >= HTTP_STATE_PARSED && contentLength == hp->readCount) {
/* End of input */
return ESV(null);
}
if (offset < 0) {
offset = buffer->writePosition;
} else if (offset < buffer->size) {
ejsSetByteArrayPositions(ejs, buffer, offset, offset);
} else {
ejsThrowOutOfBoundsError(ejs, "Bad read offset value");
return 0;
}
if (count < 0 && !buffer->resizable) {
count = buffer->size - offset;
}
if ((count = readHttpData(ejs, hp, count)) < 0) {
assert(ejs->exception);
return 0;
} else if (count == 0 && conn->state > HTTP_STATE_CONTENT) {
return ESV(null);
}
hp->readCount += count;
if (ejsCopyToByteArray(ejs, buffer, offset, (char*) mprGetBufStart(hp->responseContent), count) != count) {
ejsThrowMemoryError(ejs);
}
ejsSetByteArrayPositions(ejs, buffer, -1, buffer->writePosition + count);
mprAdjustBufStart(hp->responseContent, count);
mprResetBufIfEmpty(hp->responseContent);
return ejsCreateNumber(ejs, (MprNumber) count);
}
/*
Read data bytes from a file
function readBytes(count: Number = -1): ByteArray
*/
static EjsObj *readFileBytes(Ejs *ejs, EjsFile *fp, int argc, EjsObj **argv)
{
EjsByteArray *result;
MprPath info;
ssize count, totalRead;
if (argc == 0) {
count = -1;
} else if (argc != 1) {
count = 0;
ejsThrowArgError(ejs, "Bad args");
return 0;
} else {
assert(argc == 1 && ejsIs(ejs, argv[0], Number));
count = ejsGetInt(ejs, argv[0]);
}
if (fp->file == 0) {
ejsThrowStateError(ejs, "File not open");
return 0;
}
if (!(fp->mode & EJS_FILE_READ)) {
ejsThrowStateError(ejs, "File not opened for reading");
return 0;
}
if (count < 0) {
// TODO OPT could this be cached in fp->info
if (mprGetPathInfo(fp->path, &info) == 0) {
count = (int) info.size;
count -= (int) mprGetFilePosition(fp->file);
} else {
count = ME_MAX_BUFFER;
}
assert(count >= 0);
}
result = ejsCreateByteArray(ejs, count);
if (result == 0) {
ejsThrowMemoryError(ejs);
return 0;
}
totalRead = readData(ejs, fp, result, 0, count);
if (totalRead < 0) {
ejsThrowIOError(ejs, "Cannot read from file: %s", fp->path);
return 0;
} else if (totalRead == 0) {
return ESV(null);
}
ejsSetByteArrayPositions(ejs, result, 0, totalRead);
return (EjsObj*) result;
}
/*
Connection callback
*/
static void webSocketNotify(HttpConn *conn, int event, int arg)
{
Ejs *ejs;
EjsWebSocket *ws;
EjsByteArray *ba;
EjsAny *data;
HttpPacket *packet;
MprBuf *content;
ssize len;
if ((ws = httpGetConnContext(conn)) == 0) {
return;
}
ejs = ws->ejs;
if (!ejs->service) {
/* Shutting down */
return;
}
switch (event) {
case HTTP_EVENT_STATE:
if (arg == HTTP_STATE_CONTENT) {
ws->protocol = (char*) httpGetHeader(conn, "Sec-WebSocket-Protocol");
mprTrace(3, "Web socket protocol %s", ws->protocol);
onWebSocketEvent(ws, HTTP_EVENT_APP_OPEN, 0, 0);
}
break;
case HTTP_EVENT_READABLE:
packet = httpGetPacket(conn->readq);
content = packet->content;
if (packet->type == WS_MSG_TEXT) {
data = ejsCreateStringFromBytes(ejs, mprGetBufStart(content), mprGetBufLength(content));
} else {
len = httpGetPacketLength(packet);
assert(len > 0);
if ((ba = ejsCreateByteArray(ejs, len)) == 0) {
return;
}
memcpy(ba->value, mprGetBufStart(content), len);
ejsSetByteArrayPositions(ejs, ba, -1, len);
data = ba;
}
onWebSocketEvent(ws, event, data, packet);
break;
case HTTP_EVENT_ERROR:
if (!ws->error && !ws->closed) {
ws->error = 1;
onWebSocketEvent(ws, event, 0, 0);
ws->closed = 1;
onWebSocketEvent(ws, HTTP_EVENT_APP_CLOSE, 0, 0);
}
break;
case HTTP_EVENT_APP_CLOSE:
if (!ws->closed) {
ws->closed = 1;
onWebSocketEvent(ws, event, 0, 0);
}
break;
}
}
