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//-----------------------------------------------------------------------------
// Name: comma_separated_list.h
// Developer: Wolfire Games LLC
// Description:
// License: Read below
//-----------------------------------------------------------------------------
//
// Copyright 2022 Wolfire Games LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-----------------------------------------------------------------------------
#pragma once
#include <string>
// The CSL iterator iterates over the tokens of a comma-separated list, e.g.
// for "a, b, c" it will return "a", "b" and "c".
struct CSLIterator {
std::string str_;
int start_, comma_pos_;
CSLIterator(const std::string& str)
:start_(0), comma_pos_(0)
{
str_ = str;
}
bool GetNext(std::string *str){
if(comma_pos_ == (int)str_.length()){
return false;
}
int end = (int) str_.length();
comma_pos_ = (int) str_.length();
for(int i=start_; i<end; ++i){
if(str_[i] == ','){
comma_pos_ = i;
break;
}
}
while(str_[start_] == ' '){
++start_;
}
end = comma_pos_ - 1;
while(str_[end] == ' '){
--end;
}
if(str){
(*str) = str_.substr(start_, end-start_+1);
}
start_ = comma_pos_ + 1;
return true;
}
};
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