diff options
Diffstat (limited to 'Source/Internal/comma_separated_list.h')
-rw-r--r-- | Source/Internal/comma_separated_list.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/Source/Internal/comma_separated_list.h b/Source/Internal/comma_separated_list.h new file mode 100644 index 00000000..8dc9890d --- /dev/null +++ b/Source/Internal/comma_separated_list.h @@ -0,0 +1,64 @@ +//----------------------------------------------------------------------------- +// 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; + } +}; |