242 lines
4.7 KiB
C++
242 lines
4.7 KiB
C++
// Module: Log4CPLUS
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// File: property.cxx
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// Created: 2/2002
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// Author: Tad E. Smith
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//
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//
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// Copyright 2002-2010 Tad E. Smith
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <cstring>
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#if defined (UNICODE)
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# include <cwctype>
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#else
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# include <cctype>
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#endif
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#include <log4cplus/helpers/property.h>
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#include <log4cplus/fstreams.h>
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namespace log4cplus
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{
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const tchar helpers::Properties::PROPERTIES_COMMENT_CHAR = LOG4CPLUS_TEXT('#');
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namespace
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{
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static
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int
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is_space (tchar ch)
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{
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#if defined (UNICODE)
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return std::iswspace (ch);
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#else
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return std::isspace (static_cast<unsigned char>(ch));
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#endif
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}
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static
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void
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trim_leading_ws (tstring & str)
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{
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tstring::iterator it = str.begin ();
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for (; it != str.end (); ++it)
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{
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if (! is_space (*it))
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break;
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}
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str.erase (str.begin (), it);
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}
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static
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void
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trim_trailing_ws (tstring & str)
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{
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tstring::reverse_iterator rit = str.rbegin ();
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for (; rit != str.rend (); ++rit)
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{
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if (! is_space (*rit))
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break;
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}
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str.erase (rit.base (), str.end ());
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}
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static
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void
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trim_ws (tstring & str)
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{
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trim_trailing_ws (str);
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trim_leading_ws (str);
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}
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} // namespace
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namespace helpers
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{
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///////////////////////////////////////////////////////////////////////////////
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// Properties ctors and dtor
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///////////////////////////////////////////////////////////////////////////////
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Properties::Properties()
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{
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}
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Properties::Properties(tistream& input)
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{
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init(input);
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}
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Properties::Properties(const tstring& inputFile)
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{
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if (inputFile.empty ())
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return;
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tifstream file (LOG4CPLUS_TSTRING_TO_STRING(inputFile).c_str());
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init(file);
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}
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void
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Properties::init(tistream& input)
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{
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if (! input)
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return;
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tstring buffer;
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while (std::getline (input, buffer))
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{
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trim_leading_ws (buffer);
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tstring::size_type const buffLen = buffer.size ();
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if (buffLen == 0 || buffer[0] == PROPERTIES_COMMENT_CHAR)
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continue;
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// Check if we have a trailing \r because we are
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// reading a properties file produced on Windows.
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if (buffer[buffLen-1] == LOG4CPLUS_TEXT('\r'))
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// Remove trailing 'Windows' \r.
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buffer.resize (buffLen - 1);
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tstring::size_type const idx = buffer.find('=');
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if (idx != tstring::npos)
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{
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tstring key = buffer.substr(0, idx);
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tstring value = buffer.substr(idx + 1);
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trim_trailing_ws (key);
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trim_ws (value);
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setProperty(key, value);
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}
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}
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}
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Properties::~Properties()
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{
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}
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///////////////////////////////////////////////////////////////////////////////
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// Properties public methods
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///////////////////////////////////////////////////////////////////////////////
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tstring
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Properties::getProperty(const tstring& key) const
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{
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StringMap::const_iterator it (data.find(key));
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if (it == data.end())
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return LOG4CPLUS_TEXT("");
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else
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return it->second;
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}
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tstring
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Properties::getProperty(const tstring& key,
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const tstring& defaultVal) const
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{
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StringMap::const_iterator it (data.find (key));
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if (it == data.end ())
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return defaultVal;
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else
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return it->second;
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}
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std::vector<tstring>
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Properties::propertyNames() const
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{
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std::vector<tstring> tmp;
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for (StringMap::const_iterator it=data.begin(); it!=data.end(); ++it)
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tmp.push_back(it->first);
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return tmp;
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}
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void
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Properties::setProperty(const tstring& key, const tstring& value)
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{
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data[key] = value;
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}
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bool
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Properties::removeProperty(const tstring& key)
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{
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return (data.erase(key) > 0);
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}
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Properties
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Properties::getPropertySubset(
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const tstring& prefix) const
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{
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Properties ret;
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std::vector<tstring> const keys = propertyNames();
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size_t const prefix_len = prefix.size ();
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for (std::vector<tstring>::const_iterator it = keys.begin();
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it != keys.end(); ++it)
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{
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int result = it->compare (0, prefix_len, prefix);
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if (result == 0)
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ret.setProperty (it->substr (prefix_len), getProperty(*it));
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}
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return ret;
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}
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} // namespace helpers
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} // namespace log4cplus
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