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cppcheck/cli/filelister.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* 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 "filelister.h"
#include "path.h"
#include "pathmatch.h"
#include "utils.h"
#include <cstddef>
#include <cstring>
#include <iterator>
#include <memory>
#ifdef _WIN32
///////////////////////////////////////////////////////////////////////////////
////// This code is WIN32 systems /////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
#include <windows.h>
#include <shlwapi.h>
// Here is the catch: cppcheck core is Ansi code (using char type).
// When compiling Unicode targets WinAPI automatically uses *W Unicode versions
// of called functions. Thus, we explicitly call *A versions of the functions.
std::string FileLister::recursiveAddFiles(std::list<std::pair<std::string, std::size_t>>&files, const std::string &path, const std::set<std::string> &extra, const PathMatch& ignored)
{
return addFiles(files, path, extra, true, ignored);
}
std::string FileLister::addFiles(std::list<std::pair<std::string, std::size_t>>&files, const std::string &path, const std::set<std::string> &extra, bool recursive, const PathMatch& ignored)
{
if (path.empty())
return "no path specified";
const std::string cleanedPath = Path::toNativeSeparators(path);
// basedir is the base directory which is used to form pathnames.
// It always has a trailing backslash available for concatenation.
std::string basedir;
// searchPattern is the search string passed into FindFirst and FindNext.
std::string searchPattern = cleanedPath;
// The user wants to check all files in a dir
const bool checkAllFilesInDir = Path::isDirectory(cleanedPath);
if (checkAllFilesInDir) {
const char c = cleanedPath.back();
switch (c) {
case '\\':
searchPattern += '*';
basedir = cleanedPath;
break;
case '*':
basedir = cleanedPath.substr(0, cleanedPath.length() - 1);
break;
default:
searchPattern += "\\*";
if (cleanedPath != ".")
basedir = cleanedPath + '\\';
}
} else {
const std::string::size_type pos = cleanedPath.find_last_of('\\');
if (std::string::npos != pos) {
basedir = cleanedPath.substr(0, pos + 1);
}
}
WIN32_FIND_DATAA ffd;
HANDLE hFind = FindFirstFileA(searchPattern.c_str(), &ffd);
if (INVALID_HANDLE_VALUE == hFind) {
const DWORD err = GetLastError();
if (err == ERROR_FILE_NOT_FOUND) {
// no files matched
return "";
}
return "finding files failed. Search pattern: '" + searchPattern + "'. (error: " + std::to_string(err) + ")";
}
std::unique_ptr<void, decltype(&FindClose)> hFind_deleter(hFind, FindClose);
do {
if (ffd.cFileName[0] != '.' && ffd.cFileName[0] != '\0')
{
const char* ansiFfd = ffd.cFileName;
if (std::strchr(ansiFfd,'?')) {
ansiFfd = ffd.cAlternateFileName;
}
const std::string fname(basedir + ansiFfd);
if ((ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0) {
// File
if ((!checkAllFilesInDir || Path::acceptFile(fname, extra)) && !ignored.match(fname)) {
const std::string nativename = Path::fromNativeSeparators(fname);
// Limitation: file sizes are assumed to fit in a 'size_t'
#ifdef _WIN64
files.emplace_back(nativename, (static_cast<std::size_t>(ffd.nFileSizeHigh) << 32) | ffd.nFileSizeLow);
#else
files.emplace_back(nativename, ffd.nFileSizeLow);
#endif
}
} else {
// Directory
if (recursive) {
if (!ignored.match(fname)) {
std::list<std::pair<std::string, std::size_t>> filesSorted;
std::string err = FileLister::recursiveAddFiles(filesSorted, fname, extra, ignored);
if (!err.empty())
return err;
// files inside directories need to be sorted as the filesystem doesn't provide a stable order
filesSorted.sort([](const decltype(filesSorted)::value_type& a, const decltype(filesSorted)::value_type& b) {
return a.first < b.first;
});
files.insert(files.end(), std::make_move_iterator(filesSorted.begin()), std::make_move_iterator(filesSorted.end()));
}
}
}
}
if (!FindNextFileA(hFind, &ffd)) {
const DWORD err = GetLastError();
// no more files matched
if (err != ERROR_NO_MORE_FILES)
return "failed to get next file (error: " + std::to_string(err) + ")";
break;
}
} while (true);
return "";
}
#else
///////////////////////////////////////////////////////////////////////////////
////// This code is POSIX-style systems ///////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
#if defined(__CYGWIN__)
#undef __STRICT_ANSI__
#endif
#include <dirent.h>
#include <sys/stat.h>
#include <cerrno>
static std::string addFiles2(std::list<std::pair<std::string, std::size_t>> &files,
const std::string &path,
const std::set<std::string> &extra,
bool recursive,
const PathMatch& ignored
)
{
if (ignored.match(path))
return "";
struct stat file_stat;
if (stat(path.c_str(), &file_stat) != -1) {
if ((file_stat.st_mode & S_IFMT) == S_IFDIR) {
DIR * dir = opendir(path.c_str());
if (!dir) {
const int err = errno;
return "could not open directory '" + path + "' (errno: " + std::to_string(err) + ")";
}
std::unique_ptr<DIR, decltype(&closedir)> dir_deleter(dir, closedir);
std::string new_path = path;
new_path += '/';
std::list<std::pair<std::string, std::size_t>> filesSorted;
while (const dirent* dir_result = readdir(dir)) {
if ((std::strcmp(dir_result->d_name, ".") == 0) ||
(std::strcmp(dir_result->d_name, "..") == 0))
continue;
new_path.erase(path.length() + 1);
new_path += dir_result->d_name;
#if defined(_DIRENT_HAVE_D_TYPE) || defined(_BSD_SOURCE)
const bool path_is_directory = (dir_result->d_type == DT_DIR || (dir_result->d_type == DT_UNKNOWN && Path::isDirectory(new_path)));
#else
const bool path_is_directory = Path::isDirectory(new_path);
#endif
if (path_is_directory) {
if (recursive && !ignored.match(new_path)) {
std::string err = addFiles2(filesSorted, new_path, extra, recursive, ignored);
if (!err.empty()) {
return err;
}
}
} else {
if (Path::acceptFile(new_path, extra) && !ignored.match(new_path)) {
if (stat(new_path.c_str(), &file_stat) != -1) {
filesSorted.emplace_back(new_path, file_stat.st_size);
}
else {
const int err = errno;
return "could not stat file '" + new_path + "' (errno: " + std::to_string(err) + ")";
}
}
}
}
// files inside directories need to be sorted as the filesystem doesn't provide a stable order
filesSorted.sort([](const decltype(filesSorted)::value_type& a, const decltype(filesSorted)::value_type& b) {
return a.first < b.first;
});
files.insert(files.end(), std::make_move_iterator(filesSorted.begin()), std::make_move_iterator(filesSorted.end()));
} else
files.emplace_back(path, file_stat.st_size);
}
return "";
}
std::string FileLister::recursiveAddFiles(std::list<std::pair<std::string, std::size_t>> &files, const std::string &path, const std::set<std::string> &extra, const PathMatch& ignored)
{
return addFiles(files, path, extra, true, ignored);
}
std::string FileLister::addFiles(std::list<std::pair<std::string, std::size_t>> &files, const std::string &path, const std::set<std::string> &extra, bool recursive, const PathMatch& ignored)
{
if (path.empty())
return "no path specified";
std::string corrected_path = path;
if (endsWith(corrected_path, '/'))
corrected_path.erase(corrected_path.end() - 1);
return addFiles2(files, corrected_path, extra, recursive, ignored);
}
#endif
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