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 #include <stdio.h>
12 
13 using namespace lldb;
14 using namespace lldb_private;
15 
16 StreamString::StreamString() : Stream(0, 4, eByteOrderBig) {}
17 
18 StreamString::StreamString(uint32_t flags, uint32_t addr_size,
19                            ByteOrder byte_order)
20     : Stream(flags, addr_size, byte_order), m_packet() {}
21 
22 StreamString::~StreamString() {}
23 
24 void StreamString::Flush() {
25   // Nothing to do when flushing a buffer based stream...
26 }
27 
28 size_t StreamString::Write(const void *s, size_t length) {
29   m_packet.append(reinterpret_cast<const char *>(s), length);
30   return length;
31 }
32 
33 void StreamString::Clear() { m_packet.clear(); }
34 
35 bool StreamString::Empty() const { return GetSize() == 0; }
36 
37 size_t StreamString::GetSize() const { return m_packet.size(); }
38 
39 size_t StreamString::GetSizeOfLastLine() const {
40   const size_t length = m_packet.size();
41   size_t last_line_begin_pos = m_packet.find_last_of("\r\n");
42   if (last_line_begin_pos == std::string::npos) {
43     return length;
44   } else {
45     ++last_line_begin_pos;
46     return length - last_line_begin_pos;
47   }
48 }
49 
50 llvm::StringRef StreamString::GetString() const { return m_packet; }
51 
52 void StreamString::FillLastLineToColumn(uint32_t column, char fill_char) {
53   const size_t length = m_packet.size();
54   size_t last_line_begin_pos = m_packet.find_last_of("\r\n");
55   if (last_line_begin_pos == std::string::npos) {
56     last_line_begin_pos = 0;
57   } else {
58     ++last_line_begin_pos;
59   }
60 
61   const size_t line_columns = length - last_line_begin_pos;
62   if (column > line_columns) {
63     m_packet.append(column - line_columns, fill_char);
64   }
65 }
66