cppcheck/lib/utils.h

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2023 Cppcheck team.
*
* 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 3 of the License, or
* (at your option) 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/>.
*/
//---------------------------------------------------------------------------
#ifndef utilsH
#define utilsH
//---------------------------------------------------------------------------
#include "config.h"
#include <algorithm>
#include <array>
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#include <cstddef>
#include <initializer_list>
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#include <string>
#include <vector>
struct SelectMapKeys {
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template<class Pair>
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typename Pair::first_type operator()(const Pair& p) const {
return p.first;
}
};
struct SelectMapValues {
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template<class Pair>
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typename Pair::second_type operator()(const Pair& p) const {
return p.second;
}
};
template<class Range, class T>
bool contains(const Range& r, const T& x)
{
return std::find(r.cbegin(), r.cend(), x) != r.cend();
}
template<class T>
bool contains(const std::initializer_list<T>& r, const T& x)
{
return std::find(r.begin(), r.end(), x) != r.end();
}
template<class T, class U>
bool contains(const std::initializer_list<T>& r, const U& x)
{
return std::find(r.begin(), r.end(), x) != r.end();
}
template<class T, class ... Ts>
inline std::array<T, sizeof...(Ts) + 1> makeArray(T x, Ts... xs)
{
return {std::move(x), std::move(xs)...};
}
// Enum hash for C++11. This is not needed in C++14
struct EnumClassHash {
template<typename T>
std::size_t operator()(T t) const
{
return static_cast<std::size_t>(t);
}
};
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inline bool endsWith(const std::string &str, char c)
{
return !str.empty() && str.back() == c;
}
inline bool endsWith(const std::string &str, const char end[], std::size_t endlen)
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{
return (str.size() >= endlen) && (str.compare(str.size()-endlen, endlen, end)==0);
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}
template<std::size_t N>
bool endsWith(const std::string& str, const char (&end)[N])
{
return endsWith(str, end, N - 1);
}
inline static bool isPrefixStringCharLiteral(const std::string &str, char q, const std::string& p)
{
// str must be at least the prefix plus the start and end quote
if (str.length() < p.length() + 2)
return false;
// check for end quote
if (!endsWith(str, q))
return false;
// check for start quote
if (str[p.size()] != q)
return false;
// check for prefix
if (str.compare(0, p.size(), p) != 0)
return false;
return true;
}
inline static bool isStringCharLiteral(const std::string &str, char q)
{
// early out to avoid the loop
if (!endsWith(str, q))
return false;
static const std::array<std::string, 5> suffixes{"", "u8", "u", "U", "L"};
return std::any_of(suffixes.cbegin(), suffixes.cend(), [&](const std::string& p) {
return isPrefixStringCharLiteral(str, q, p);
});
}
inline static bool isStringLiteral(const std::string &str)
{
return isStringCharLiteral(str, '"');
}
inline static bool isCharLiteral(const std::string &str)
{
return isStringCharLiteral(str, '\'');
}
inline static std::string getStringCharLiteral(const std::string &str, char q)
{
const std::size_t quotePos = str.find(q);
return str.substr(quotePos + 1U, str.size() - quotePos - 2U);
}
inline static std::string getStringLiteral(const std::string &str)
{
if (isStringLiteral(str))
return getStringCharLiteral(str, '"');
return "";
}
inline static std::string getCharLiteral(const std::string &str)
{
if (isCharLiteral(str))
return getStringCharLiteral(str, '\'');
return "";
}
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inline static const char *getOrdinalText(int i)
{
if (i == 1)
return "st";
if (i == 2)
return "nd";
if (i == 3)
return "rd";
return "th";
}
CPPCHECKLIB int caseInsensitiveStringCompare(const std::string& lhs, const std::string& rhs);
CPPCHECKLIB bool isValidGlobPattern(const std::string& pattern);
CPPCHECKLIB bool matchglob(const std::string& pattern, const std::string& name);
CPPCHECKLIB bool matchglobs(const std::vector<std::string> &patterns, const std::string &name);
CPPCHECKLIB void strTolower(std::string& str);
/**
* Simple helper function:
* \return size of array
* */
template<typename T, int size>
std::size_t getArrayLength(const T (& /*unused*/)[size])
{
return size;
}
#endif