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