1//===-- StreamString.cpp ----------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "lldb/Utility/StreamString.h"
10
11using namespace lldb;
12using namespace lldb_private;
13
14StreamString::StreamString() : Stream(0, 4, eByteOrderBig) {}
15
16StreamString::StreamString(uint32_t flags, uint32_t addr_size,
17                           ByteOrder byte_order)
18    : Stream(flags, addr_size, byte_order), m_packet() {}
19
20StreamString::~StreamString() {}
21
22void StreamString::Flush() {
23  // Nothing to do when flushing a buffer based stream...
24}
25
26size_t StreamString::WriteImpl(const void *s, size_t length) {
27  m_packet.append(static_cast<const char *>(s), length);
28  return length;
29}
30
31void StreamString::Clear() {
32  m_packet.clear();
33  m_bytes_written = 0;
34}
35
36bool StreamString::Empty() const { return GetSize() == 0; }
37
38size_t StreamString::GetSize() const { return m_packet.size(); }
39
40size_t StreamString::GetSizeOfLastLine() const {
41  const size_t length = m_packet.size();
42  size_t last_line_begin_pos = m_packet.find_last_of("\r\n");
43  if (last_line_begin_pos == std::string::npos) {
44    return length;
45  } else {
46    ++last_line_begin_pos;
47    return length - last_line_begin_pos;
48  }
49}
50
51llvm::StringRef StreamString::GetString() const { return m_packet; }
52
53void StreamString::FillLastLineToColumn(uint32_t column, char fill_char) {
54  const size_t length = m_packet.size();
55  size_t last_line_begin_pos = m_packet.find_last_of("\r\n");
56  if (last_line_begin_pos == std::string::npos) {
57    last_line_begin_pos = 0;
58  } else {
59    ++last_line_begin_pos;
60  }
61
62  const size_t line_columns = length - last_line_begin_pos;
63  if (column > line_columns) {
64    m_packet.append(column - line_columns, fill_char);
65  }
66}
67