SectionParser.hpp

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// SPDX-License-Identifier: Apache-2.0
//
// Copyright 2026 Caleb Buahin
//
// 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>
#include <vector>
 
namespace openswmm::input {

struct ParsedLine {
    std::string data;     
    std::string comment;  
};

inline std::vector<ParsedLine>
parse_section(const std::vector<std::string>& raw_lines)
{
    std::vector<ParsedLine> result;
    std::string pending;
 
    for (const auto& raw : raw_lines) {
        if (raw.empty()) continue;
 
        if (raw[0] == ';') {
            if (raw.size() >= 2 && raw[1] == ';') {
                // ";;" column-header or dashes line — discard and reset pending
                pending.clear();
            } else {
                // Single-';' object-comment line — append to pending
                if (!pending.empty()) pending += "\\n";
                pending += raw.substr(1);  // strip leading ';'
            }
            continue;
        }
 
        // Data line — package with accumulated comment
        result.push_back({raw, std::move(pending)});
        pending.clear();
    }
    return result;
}
 
} // namespace openswmm::input