cppcheck/test/helpers.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
2023-06-21 16:41:22 +02:00
* 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/>.
*/
#include "helpers.h"
#include "filelister.h"
#include "path.h"
#include "pathmatch.h"
#include "preprocessor.h"
#include <cerrno>
#include <cstdio>
#include <iostream>
#include <fstream> // IWYU pragma: keep
#include <list>
#include <map>
#include <stdexcept>
#include <utility>
#include <vector>
#ifdef _WIN32
#include <windows.h>
#else
#include <sys/stat.h>
#include <unistd.h>
#endif
#include <simplecpp.h>
class Suppressions;
// TODO: better path-only usage
ScopedFile::ScopedFile(std::string name, const std::string &content, std::string path)
: mName(std::move(name))
, mPath(Path::toNativeSeparators(std::move(path)))
, mFullPath(Path::join(mPath, mName))
{
if (!mPath.empty() && mPath != Path::getCurrentPath()) {
#ifdef _WIN32
if (!CreateDirectoryA(mPath.c_str(), nullptr))
throw std::runtime_error("ScopedFile(" + mFullPath + ") - could not create directory");
#else
if (mkdir(mPath.c_str(), S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) != 0)
throw std::runtime_error("ScopedFile(" + mFullPath + ") - could not create directory");
#endif
}
std::ofstream of(mFullPath);
if (!of.is_open())
throw std::runtime_error("ScopedFile(" + mFullPath + ") - could not open file");
of << content;
}
ScopedFile::~ScopedFile() {
const int remove_res = std::remove(mFullPath.c_str());
if (remove_res != 0) {
std::cout << "ScopedFile(" << mFullPath + ") - could not delete file (" << remove_res << ")" << std::endl;
}
if (!mPath.empty() && mPath != Path::getCurrentPath()) {
// TODO: remove all files
// TODO: simplify the function call
// hack to be able to delete *.plist output files
std::map<std::string, std::size_t> files;
const std::string res = FileLister::addFiles(files, mPath, {".plist"}, false, PathMatch({}));
if (!res.empty()) {
std::cout << "ScopedFile(" << mPath + ") - generating file list failed (" << res << ")" << std::endl;
}
for (const auto &f : files)
{
const std::string &file = f.first;
const int rm_f_res = std::remove(file.c_str());
if (rm_f_res != 0) {
std::cout << "ScopedFile(" << mPath + ") - could not delete '" << file << "' (" << rm_f_res << ")" << std::endl;
}
}
#ifdef _WIN32
if (!RemoveDirectoryA(mPath.c_str())) {
std::cout << "ScopedFile(" << mFullPath + ") - could not delete folder (" << GetLastError() << ")" << std::endl;
}
#else
const int rmdir_res = rmdir(mPath.c_str());
if (rmdir_res == -1) {
const int err = errno;
std::cout << "ScopedFile(" << mFullPath + ") - could not delete folder (" << err << ")" << std::endl;
}
#endif
}
}
// TODO: we should be using the actual Preprocessor implementation
std::string PreprocessorHelper::getcode(Preprocessor &preprocessor, const std::string &filedata, const std::string &cfg, const std::string &filename, Suppressions *inlineSuppression)
{
simplecpp::OutputList outputList;
std::vector<std::string> files;
std::istringstream istr(filedata);
simplecpp::TokenList tokens1(istr, files, Path::simplifyPath(filename), &outputList);
if (inlineSuppression)
preprocessor.inlineSuppressions(tokens1, *inlineSuppression);
tokens1.removeComments();
preprocessor.simplifyPragmaAsm(&tokens1);
preprocessor.removeComments();
preprocessor.setDirectives(tokens1);
preprocessor.reportOutput(outputList, true);
if (Preprocessor::hasErrors(outputList))
return "";
std::string ret;
try {
// TODO: also preserve location information when #include exists - enabling that will fail since #line is treated like a regular token
ret = preprocessor.getcode(tokens1, cfg, files, filedata.find("#file") != std::string::npos);
} catch (const simplecpp::Output &) {
ret.clear();
}
// Since "files" is a local variable the tracking info must be cleared..
preprocessor.mMacroUsage.clear();
preprocessor.mIfCond.clear();
return ret;
}
void PreprocessorHelper::preprocess(const char code[], std::vector<std::string> &files, Tokenizer& tokenizer)
{
// Raw Tokens..
std::istringstream istr(code);
const simplecpp::TokenList tokens1(istr, files, files[0]);
// Preprocess..
simplecpp::TokenList tokens2(files);
std::map<std::string, simplecpp::TokenList*> filedata;
simplecpp::preprocess(tokens2, tokens1, files, filedata, simplecpp::DUI());
// Tokenizer..
tokenizer.createTokens(std::move(tokens2));
}
void PreprocessorHelper::preprocess(Preprocessor &preprocessor, const char code[], std::vector<std::string> &files, Tokenizer& tokenizer)
{
std::istringstream istr(code);
const simplecpp::TokenList tokens1(istr, files, files[0]);
// Preprocess..
simplecpp::TokenList tokens2(files);
std::map<std::string, simplecpp::TokenList*> filedata;
simplecpp::preprocess(tokens2, tokens1, files, filedata, simplecpp::DUI());
// Tokenizer..
tokenizer.createTokens(std::move(tokens2));
preprocessor.setDirectives(tokens1);
}