claw 1.9.0
 
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log_stream_uniq.cpp
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1/*
2 CLAW - a C++ Library Absolutely Wonderful
3
4 CLAW is a free library without any particular aim but being useful to
5 anyone.
6
7 Copyright (C) 2005-2011 Julien Jorge
8
9 This library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 This library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with this library; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22
23 contact: julien.jorge@stuff-o-matic.com
24*/
31
32#include <claw/claw_gettext.hpp>
33
34#include <sstream>
35
42 : m_stream(s)
43 , m_repetition_count(0)
44{}
45
50{
51 delete m_stream;
52}
53
58void claw::log_stream_uniq::write(const std::string& str)
59{
60 std::string::size_type p = str.find_first_of('\n');
61
62 if(p == std::string::npos)
63 m_current_line += str;
64 else
65 {
66 ++p; // includes the '\n'
67 m_current_line += str.substr(0, p);
68
69 output_current_line();
70
71 if(p != str.length())
72 write(str.substr(p));
73 }
74}
75
80{
81 m_stream->flush();
82}
83
87void claw::log_stream_uniq::output_current_line()
88{
89 if(m_current_line == m_previous_line)
90 ++m_repetition_count;
91 else
92 {
93 if(m_repetition_count > 0)
94 {
95 std::ostringstream oss;
96 oss << claw_gettext("(Previous line repeated ") << m_repetition_count
97 << claw_ngettext(" time)", " times)", m_repetition_count)
98 << '\n';
99
100 m_stream->write(oss.str());
101 }
102
103 m_repetition_count = 0;
104
105 m_previous_line = m_current_line;
106 m_stream->write(m_current_line);
107 }
108
109 m_current_line.clear();
110}
virtual void write(const std::string &str)
Write a string in the stream.
virtual ~log_stream_uniq()
Destructor.
log_stream_uniq(log_stream *s)
Constructor.
virtual void flush()
Flush the stream.
Base class for streams accepting log output.
Macros to call gettext on the libclaw textdomain.
#define claw_ngettext(s, p, n)
Call ngettext on the default text domain used by Claw.
#define claw_gettext(s)
Call gettext on the default text domain used by Claw.
A log stream that does not output successively the same message.