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//
// StringTokenizer.cpp
//
// Library: Foundation
// Package: Core
// Module: StringTokenizer
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/StringTokenizer.h"
#include "Poco/Ascii.h"
#include <algorithm>
namespace Poco {
StringTokenizer::StringTokenizer(const std::string& str, const std::string& separators, int options)
{
std::string::const_iterator it = str.begin();
std::string::const_iterator itEnd = str.end();
std::string token;
bool doTrim = ((options & TOK_TRIM) != 0);
bool ignoreEmpty = ((options & TOK_IGNORE_EMPTY) != 0);
bool lastToken = false;
for (;it != itEnd; ++it)
{
if (separators.find(*it) != std::string::npos)
{
if (doTrim) trim(token);
if (!token.empty() || !ignoreEmpty) _tokens.push_back(token);
if (!ignoreEmpty) lastToken = true;
token.clear();
}
else
{
token += *it;
lastToken = false;
}
}
if (!token.empty())
{
if (doTrim) trim(token);
if (!token.empty() || !ignoreEmpty) _tokens.push_back(token);
}
else if (lastToken)
{
_tokens.push_back(std::string());
}
}
StringTokenizer::~StringTokenizer()
{
}
void StringTokenizer::trim(std::string& token)
{
std::string::size_type front = 0;
std::string::size_type back = 0;
std::string::size_type length = token.length();
std::string::const_iterator tIt = token.begin();
std::string::const_iterator tEnd = token.end();
for (; tIt != tEnd; ++tIt, ++front)
{
if (!Ascii::isSpace(*tIt)) break;
}
if (tIt != tEnd)
{
std::string::const_reverse_iterator tRit = token.rbegin();
std::string::const_reverse_iterator tRend = token.rend();
for (; tRit != tRend; ++tRit, ++back)
{
if (!Ascii::isSpace(*tRit)) break;
}
}
token = token.substr(front, length - back - front);
}
std::size_t StringTokenizer::count(const std::string& token) const
{
std::size_t result = 0;
TokenVec::const_iterator it = std::find(_tokens.begin(), _tokens.end(), token);
while (it != _tokens.end())
{
result++;
it = std::find(++it, _tokens.end(), token);
}
return result;
}
std::string::size_type StringTokenizer::find(const std::string& token, std::string::size_type pos) const
{
TokenVec::const_iterator it = std::find(_tokens.begin() + pos, _tokens.end(), token);
if (it != _tokens.end())
{
return it - _tokens.begin();
}
throw NotFoundException(token);
}
bool StringTokenizer::has(const std::string& token) const
{
TokenVec::const_iterator it = std::find(_tokens.begin(), _tokens.end(), token);
return it != _tokens.end();
}
std::size_t StringTokenizer::replace(const std::string& oldToken, const std::string& newToken, std::string::size_type pos)
{
std::size_t result = 0;
TokenVec::iterator it = std::find(_tokens.begin() + pos, _tokens.end(), oldToken);
while (it != _tokens.end())
{
result++;
*it = newToken;
it = std::find(++it, _tokens.end(), oldToken);
}
return result;
}
} // namespace Poco
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