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78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
/*
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Copyright (C) 2016, 2020-2021 cc9cii
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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cc9cii cc9c@iinet.net.au
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*/
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#include "formid.hpp"
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#include <algorithm>
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#include <climits> // LONG_MIN, LONG_MAX for gcc
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#include <cstdlib> // strtol
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#include <sstream>
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#include <stdexcept>
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#include <string>
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namespace ESM4
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{
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void formIdToString(FormId formId, std::string& str)
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{
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char buf[8 + 1];
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int res = snprintf(buf, 8 + 1, "%08X", formId);
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if (res > 0 && res < 8 + 1)
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str.assign(buf);
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else
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throw std::runtime_error("Possible buffer overflow while converting formId");
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}
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std::string formIdToString(FormId formId)
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{
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std::string str;
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formIdToString(formId, str);
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return str;
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}
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bool isFormId(const std::string& str, FormId* id)
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{
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if (str.size() != 8)
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return false;
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char* tmp;
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errno = 0;
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unsigned long val = strtol(str.c_str(), &tmp, 16);
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if (tmp == str.c_str() || *tmp != '\0'
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|| ((val == (unsigned long)LONG_MIN || val == (unsigned long)LONG_MAX) && errno == ERANGE))
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return false;
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if (id != nullptr)
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*id = static_cast<FormId>(val);
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return true;
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}
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FormId stringToFormId(const std::string& str)
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{
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if (str.size() != 8)
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throw std::out_of_range("StringToFormId: incorrect string size");
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return static_cast<FormId>(std::stoul(str, nullptr, 16));
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}
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}
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