/* ----------------------------------------------------------------- */
/*           The HMM-Based Singing Voice Synthesis System "Sinsy"    */
/*           developed by Sinsy Working Group                        */
/*           http://sinsy.sourceforge.net/                           */
/* ----------------------------------------------------------------- */
/*                                                                   */
/*  Copyright (c) 2009-2015  Nagoya Institute of Technology          */
/*                           Department of Computer Science          */
/*                                                                   */
/* All rights reserved.                                              */
/*                                                                   */
/* Redistribution and use in source and binary forms, with or        */
/* without modification, are permitted provided that the following   */
/* conditions are met:                                               */
/*                                                                   */
/* - Redistributions of source code must retain the above copyright  */
/*   notice, this list of conditions and the following disclaimer.   */
/* - Redistributions in binary form must reproduce the above         */
/*   copyright notice, this list of conditions and the following     */
/*   disclaimer in the documentation and/or other materials provided */
/*   with the distribution.                                          */
/* - Neither the name of the Sinsy working group nor the names of    */
/*   its contributors may be used to endorse or promote products     */
/*   derived from this software without specific prior written       */
/*   permission.                                                     */
/*                                                                   */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND            */
/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,       */
/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF          */
/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          */
/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS */
/* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,          */
/* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED   */
/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,     */
/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   */
/* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY    */
/* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE           */
/* POSSIBILITY OF SUCH DAMAGE.                                       */
/* ----------------------------------------------------------------- */

#include <algorithm>
#include "util_string.h"

namespace sinsy
{

/*!
 c is blank character or not
 */
bool isBlank(char c)
{
   size_t idx(BLANK_STR.find(c));
   if (std::string::npos == idx) {
      return false;
   }
   return true;
}

/*!
 cut left and right blanks
 */
std::string& cutBlanks(std::string& str)
{
   size_t start(str.find_first_not_of(BLANK_STR));
   if (std::string::npos == start) {
      str.clear();
      return str;
   }
   size_t end(str.find_last_not_of(BLANK_STR));
   size_t sz(end - start + 1);
   if ((0 == start) && (str.size() == sz)) {
      return str;
   }
   str = str.substr(start, sz);
   return str;
}

/*!
 find first blank character
 */
size_t findFirstOfBlank(const std::string& str)
{
   return str.find_first_of(BLANK_STR);
}

/*!
 find first not blank character
 */
size_t findFirstNotOfBlank(const std::string& str, size_t index)
{
   return str.find_first_not_of(BLANK_STR, index);
}

/*!
 convert str to lower-case
 */
void toLower(std::string& str)
{
   std::transform(str.begin(), str.end(), str.begin(), tolower);
}

/*!
 convert str to lower-case
 */
void toUpper(std::string& str)
{
   std::transform(str.begin(), str.end(), str.begin(), toupper);
}

};  // namespace sinsy
