1 files changed, 178 insertions, 0 deletions
diff --git a/lib/cpp/src/transport/TTransportUtils.cpp b/lib/cpp/src/transport/TTransportUtils.cpp
new file mode 100644
index 000000000..a840fa6c1
--- /dev/null
+++ b/lib/cpp/src/transport/TTransportUtils.cpp
@@ -0,0 +1,178 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <transport/TTransportUtils.h>
+
+using std::string;
+
+namespace apache { namespace thrift { namespace transport {
+
+uint32_t TPipedTransport::read(uint8_t* buf, uint32_t len) {
+  uint32_t need = len;
+
+  // We don't have enough data yet
+  if (rLen_-rPos_ < need) {
+    // Copy out whatever we have
+    if (rLen_-rPos_ > 0) {
+      memcpy(buf, rBuf_+rPos_, rLen_-rPos_);
+      need -= rLen_-rPos_;
+      buf += rLen_-rPos_;
+      rPos_ = rLen_;
+    }
+
+    // Double the size of the underlying buffer if it is full
+    if (rLen_ == rBufSize_) {
+      rBufSize_ *=2;
+      rBuf_ = (uint8_t *)std::realloc(rBuf_, sizeof(uint8_t) * rBufSize_);
+    }
+
+    // try to fill up the buffer
+    rLen_ += srcTrans_->read(rBuf_+rPos_, rBufSize_ - rPos_);
+  }
+
+
+  // Hand over whatever we have
+  uint32_t give = need;
+  if (rLen_-rPos_ < give) {
+    give = rLen_-rPos_;
+  }
+  if (give > 0) {
+    memcpy(buf, rBuf_+rPos_, give);
+    rPos_ += give;
+    need -= give;
+  }
+
+  return (len - need);
+}
+
+void TPipedTransport::write(const uint8_t* buf, uint32_t len) {
+  if (len == 0) {
+    return;
+  }
+
+  // Make the buffer as big as it needs to be
+  if ((len + wLen_) >= wBufSize_) {
+    uint32_t newBufSize = wBufSize_*2;
+    while ((len + wLen_) >= newBufSize) {
+      newBufSize *= 2;
+    }
+    wBuf_ = (uint8_t *)std::realloc(wBuf_, sizeof(uint8_t) * newBufSize);
+    wBufSize_ = newBufSize;
+  }
+
+  // Copy into the buffer
+  memcpy(wBuf_ + wLen_, buf, len);
+  wLen_ += len;
+}
+
+void TPipedTransport::flush()  {
+  // Write out any data waiting in the write buffer
+  if (wLen_ > 0) {
+    srcTrans_->write(wBuf_, wLen_);
+    wLen_ = 0;
+  }
+
+  // Flush the underlying transport
+  srcTrans_->flush();
+}
+
+TPipedFileReaderTransport::TPipedFileReaderTransport(boost::shared_ptr<TFileReaderTransport> srcTrans, boost::shared_ptr<TTransport> dstTrans)
+  : TPipedTransport(srcTrans, dstTrans),
+    srcTrans_(srcTrans) {
+}
+
+TPipedFileReaderTransport::~TPipedFileReaderTransport() {
+}
+
+bool TPipedFileReaderTransport::isOpen() {
+  return TPipedTransport::isOpen();
+}
+
+bool TPipedFileReaderTransport::peek() {
+  return TPipedTransport::peek();
+}
+
+void TPipedFileReaderTransport::open() {
+  TPipedTransport::open();
+}
+
+void TPipedFileReaderTransport::close() {
+  TPipedTransport::close();
+}
+
+uint32_t TPipedFileReaderTransport::read(uint8_t* buf, uint32_t len) {
+  return TPipedTransport::read(buf, len);
+}
+
+uint32_t TPipedFileReaderTransport::readAll(uint8_t* buf, uint32_t len) {
+  uint32_t have = 0;
+  uint32_t get = 0;
+
+  while (have < len) {
+    get = read(buf+have, len-have);
+    if (get <= 0) {
+      throw TEOFException();
+    }
+    have += get;
+  }
+
+  return have;
+}
+
+void TPipedFileReaderTransport::readEnd() {
+  TPipedTransport::readEnd();
+}
+
+void TPipedFileReaderTransport::write(const uint8_t* buf, uint32_t len) {
+  TPipedTransport::write(buf, len);
+}
+
+void TPipedFileReaderTransport::writeEnd() {
+  TPipedTransport::writeEnd();
+}
+
+void TPipedFileReaderTransport::flush() {
+  TPipedTransport::flush();
+}
+
+int32_t TPipedFileReaderTransport::getReadTimeout() {
+  return srcTrans_->getReadTimeout();
+}
+
+void TPipedFileReaderTransport::setReadTimeout(int32_t readTimeout) {
+  srcTrans_->setReadTimeout(readTimeout);
+}
+
+uint32_t TPipedFileReaderTransport::getNumChunks() {
+  return srcTrans_->getNumChunks();
+}
+
+uint32_t TPipedFileReaderTransport::getCurChunk() {
+  return srcTrans_->getCurChunk();
+}
+
+void TPipedFileReaderTransport::seekToChunk(int32_t chunk) {
+  srcTrans_->seekToChunk(chunk);
+}
+
+void TPipedFileReaderTransport::seekToEnd() {
+  srcTrans_->seekToEnd();
+}
+
+}}} // apache::thrift::transport