1 files changed, 66 insertions, 0 deletions
diff --git a/lldb/source/Utility/StreamString.cpp b/lldb/source/Utility/StreamString.cpp
new file mode 100644
index 0000000000000..bf9814d6c3055
--- /dev/null
+++ b/lldb/source/Utility/StreamString.cpp
@@ -0,0 +1,66 @@
+//===-- StreamString.cpp ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Utility/StreamString.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+StreamString::StreamString() : Stream(0, 4, eByteOrderBig) {}
+
+StreamString::StreamString(uint32_t flags, uint32_t addr_size,
+                           ByteOrder byte_order)
+    : Stream(flags, addr_size, byte_order), m_packet() {}
+
+StreamString::~StreamString() {}
+
+void StreamString::Flush() {
+  // Nothing to do when flushing a buffer based stream...
+}
+
+size_t StreamString::WriteImpl(const void *s, size_t length) {
+  m_packet.append(reinterpret_cast<const char *>(s), length);
+  return length;
+}
+
+void StreamString::Clear() {
+  m_packet.clear();
+  m_bytes_written = 0;
+}
+
+bool StreamString::Empty() const { return GetSize() == 0; }
+
+size_t StreamString::GetSize() const { return m_packet.size(); }
+
+size_t StreamString::GetSizeOfLastLine() const {
+  const size_t length = m_packet.size();
+  size_t last_line_begin_pos = m_packet.find_last_of("\r\n");
+  if (last_line_begin_pos == std::string::npos) {
+    return length;
+  } else {
+    ++last_line_begin_pos;
+    return length - last_line_begin_pos;
+  }
+}
+
+llvm::StringRef StreamString::GetString() const { return m_packet; }
+
+void StreamString::FillLastLineToColumn(uint32_t column, char fill_char) {
+  const size_t length = m_packet.size();
+  size_t last_line_begin_pos = m_packet.find_last_of("\r\n");
+  if (last_line_begin_pos == std::string::npos) {
+    last_line_begin_pos = 0;
+  } else {
+    ++last_line_begin_pos;
+  }
+
+  const size_t line_columns = length - last_line_begin_pos;
+  if (column > line_columns) {
+    m_packet.append(column - line_columns, fill_char);
+  }
+}