parameters.cpp

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/*
 * The ManaPlus Client
 * Copyright (C) 2016-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * This file is part of The ManaPlus Client.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "utils/parameters.h"
 
#include "utils/stringutils.h"
 
#include "debug.h"
 
static inline void addToken(StringVect &tokens,
 std::string str) A_INLINE;
static inline void addToken(StringVect &tokens,
 std::string str)
{
 std::string item = trim(str);
 const size_t sz = item.size();
 if (sz > 1)
 {
 if (str[0] == '\"' &&
 str[sz - 1] == '\"' &&
 str[sz - 2] != '\\')
 {
 item = item.substr(1, sz - 2);
 replaceAll(item, "\\\"", "\"");
 tokens.push_back(item);
 return;
 }
 }
 replaceAll(item, "\\\"", "\"");
 if (!item.empty())
 tokens.push_back(item);
}
 
static inline size_t findNextQuote(const std::string &str,
 const char quote,
 const size_t pos) A_INLINE;
static inline size_t findNextQuote(const std::string &str,
 const char quote,
 const size_t pos)
{
 size_t idx = str.find(quote, pos);
 while (idx > 0 &&
 idx != std::string::npos &&
 str[idx - 1] == '\\')
 {
 idx = str.find(quote, idx + 1);
 }
 return idx;
}
 
static inline size_t findNextSplit(const std::string &str,
 const std::string &separator,
 const char quote) A_INLINE;
static inline size_t findNextSplit(const std::string &str,
 const std::string &separator,
 const char quote)
{
 size_t pos = 0;
 while (true)
 {
 // search for next separator
 size_t idx1 = findAny(str, separator, pos);
 // search for next open quote, skipping escaped quotes
 size_t idx2 = findNextQuote(str, quote, pos);
 if (idx2 == std::string::npos) // not quotes, return next separator
 return idx1;
 else if (idx1 == std::string::npos) // also no separators, return npos
 return std::string::npos;
 
 if (idx2 < idx1)
 { // first is quote and after separator: for example "test line", ...
 idx2 = findNextQuote(str, quote, idx2 + 1);
 if (idx2 == std::string::npos)
 return std::string::npos; // no close quote, here error
 // set position for next separator or quote
 pos = idx2 + 1;
 }
 else
 {
 return idx1;
 }
 }
}
 
bool splitParameters(StringVect &tokens,
 std::string text,
 const std::string &separator,
 const char quote)
{
 size_t idx = findNextSplit(text, separator, quote);
 
 while (idx != std::string::npos)
 {
 std::string item = text.substr(0, idx);
 addToken(tokens, item);
 text = text.substr(idx + 1);
 idx = findNextSplit(text, separator, quote);
 }
 
 addToken(tokens, text);
 return true;
}