StringUtil.cxx

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//          
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          http://www.boost.org/LICENSE_1_0.txt)
 
// Please feel free to contact me (krumnack@iastate.edu) for bug
// reports, feature suggestions, praise and complaints.
 
 
//
// includes
//
 
#include <RootCoreUtils/StringUtil.h>
 
#include <RootCoreUtils/Assert.h>
 
//
// method implementations
//
 
namespace RCU
{
  std::string substitute (const std::string& str, const std::string& pattern,
              const std::string& with)
  {
    RCU_REQUIRE (!pattern.empty());
 
    std::string result = str;
    std::string::size_type pos;
    while ((pos = result.find (pattern)) != std::string::npos) {
      // cppcheck-suppress uselessCallsSubstr
      result = result.substr (0, pos) + with + result.substr (pos + pattern.size());
    }
    return result;
  }
 
 
  bool match_expr(const std::regex& expr, const std::string& str) 
  {
    std::match_results<std::string::const_iterator> what;
    std::size_t count = std::regex_match(str.begin(), str.end(), what, expr);
    for (std::size_t iter = 0; iter != count; ++iter) 
    {
      if (what[iter].matched && what[iter].first == str.begin() &&
      what[iter].second == str.end())
    return true;
    }
    return false;
  }
 
  std::string glob_to_regexp (const std::string& glob)
  {
    std::string result;
 
    for (std::string::const_iterator iter = glob.begin(),
       end = glob.end(); iter != end; ++ iter)
    {
      if (*iter == '*')
      {
    result += ".*";
      } else if (*iter == '?')
      {
    result += ".";
      } else if (*iter == '^' || *iter == '$' || *iter == '+' || *iter == '.')
      {
    result += '\\';
    result += *iter;
      } else
      {
    result += *iter;
      }
    }
    return result;
  }
}