cppcheck/cli/filelister.cpp at main · codingman/cppcheck · GitHub

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* Cppcheck - A tool for static C/C++ code analysis

* 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>

// fix NAME_MAX not found on macOS GCC8.1

#include <climits>

#ifdef _WIN32

///////////////////////////////////////////////////////////////////////////////

////// This code is WIN32 systems /////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////

#include <windows.h>

#ifndef __BORLANDC__

#include <shlwapi.h>

#endif

// 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.

static BOOL myIsDirectory(const std::string& path)

{

#ifdef __BORLANDC__

return (GetFileAttributes(path.c_str()) & FILE_ATTRIBUTE_DIRECTORY);

#else

// See http://msdn.microsoft.com/en-us/library/bb773621(VS.85).aspx

return PathIsDirectoryA(path.c_str());

#endif

}

static HANDLE myFindFirstFile(const std::string& path, LPWIN32_FIND_DATAA findData)

{

HANDLE hFind = FindFirstFileA(path.c_str(), findData);

return hFind;

}

static BOOL myFileExists(const std::string& path)

{

#ifdef __BORLANDC__

DWORD fa = GetFileAttributes(path.c_str());

BOOL result = FALSE;

if (fa != INVALID_FILE_ATTRIBUTES && !(fa & FILE_ATTRIBUTE_DIRECTORY))

result = TRUE;

#else

const BOOL result = PathFileExistsA(path.c_str()) && !PathIsDirectoryA(path.c_str());

#endif

return result;

}

std::string FileLister::recursiveAddFiles(std::map<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::map<std::string, std::size_t> &files, const std::string &path, const std::set<std::string> &extra, bool recursive, const PathMatch& ignored)

{

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 = (myIsDirectory(cleanedPath) != FALSE);

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 = myFindFirstFile(searchPattern, &ffd);

if (INVALID_HANDLE_VALUE == hFind)

return "";

do {

if (ffd.cFileName[0] == '.' || ffd.cFileName[0] == '\0')

continue;

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[nativename] = (static_cast<std::size_t>(ffd.nFileSizeHigh) << 32) | ffd.nFileSizeLow;

#else

files[nativename] = ffd.nFileSizeLow;

#endif

}

} else {

// Directory

if (recursive) {

if (!ignored.match(fname)) {

std::string err = FileLister::recursiveAddFiles(files, fname, extra, ignored);

if (!err.empty())

return err;

}

} while (FindNextFileA(hFind, &ffd) != FALSE);

FindClose(hFind);

return "";

}

bool FileLister::isDirectory(const std::string &path)

{

return (myIsDirectory(path) != FALSE);

}

bool FileLister::fileExists(const std::string &path)

{

return (myFileExists(path) != FALSE);

}

#else

///////////////////////////////////////////////////////////////////////////////

////// This code is POSIX-style systems ///////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////

#if defined(__CYGWIN__)

#undef __STRICT_ANSI__

#endif

#include <dirent.h>

#include <sys/stat.h>

#include <cerrno>

#ifndef NAME_MAX

#ifdef MAXNAMLEN

#define NAME_MAX MAXNAMLEN

#endif

static std::string addFiles2(std::map<std::string, std::size_t> &files,

const std::string &path,

const std::set<std::string> &extra,

bool recursive,

const PathMatch& ignored

)

{

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)

return "";

dirent * dir_result;

// make sure we reserve enough space for the readdir_r() buffer;

// according to POSIX:

// The storage pointed to by entry shall be large enough for a

// dirent with an array of char d_name members containing at

// least {NAME_MAX}+1 elements.

// on some platforms, d_name is not a static sized-array but

// a pointer to space usually reserved right after the dirent

// struct; the union here allows to reserve the space and to

// provide a pointer to the right type that can be passed where

// needed without casts

union {

dirent entry;

char buf[sizeof(*dir_result) + (sizeof(dir_result->d_name) > 1 ? 0 : NAME_MAX + 1)];

} dir_result_buffer;

UNUSED(dir_result_buffer.buf); // do not trigger cppcheck itself on the "unused buf"

std::string new_path;

new_path.reserve(path.length() + 100);// prealloc some memory to avoid constant new/deletes in loop

while ((readdir_r(dir, &dir_result_buffer.entry, &dir_result) == 0) && (dir_result != nullptr)) {

if ((std::strcmp(dir_result->d_name, ".") == 0) ||

(std::strcmp(dir_result->d_name, "..") == 0))

continue;

new_path = path + '/' + dir_result->d_name;

#if defined(_DIRENT_HAVE_D_TYPE) || defined(_BSD_SOURCE)

bool path_is_directory = (dir_result->d_type == DT_DIR || (dir_result->d_type == DT_UNKNOWN && FileLister::isDirectory(new_path)));

#else

bool path_is_directory = FileLister::isDirectory(new_path);

#endif

if (path_is_directory) {

if (recursive && !ignored.match(new_path)) {

std::string err = addFiles2(files, 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)

files[new_path] = file_stat.st_size;

else

return "Can't stat " + new_path + " errno: " + std::to_string(errno);

}

closedir(dir);

} else

files[path] = file_stat.st_size;

}

return "";

}

std::string FileLister::recursiveAddFiles(std::map<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::map<std::string, std::size_t> &files, const std::string &path, const std::set<std::string> &extra, bool recursive, const PathMatch& ignored)

{

if (!path.empty()) {

std::string corrected_path = path;

if (endsWith(corrected_path, '/'))

corrected_path.erase(corrected_path.end() - 1);

return addFiles2(files, corrected_path, extra, recursive, ignored);

}

return "";

}

bool FileLister::isDirectory(const std::string &path)

{

struct stat file_stat;

return (stat(path.c_str(), &file_stat) != -1 && (file_stat.st_mode & S_IFMT) == S_IFDIR);

}

bool FileLister::fileExists(const std::string &path)

{

struct stat file_stat;

return (stat(path.c_str(), &file_stat) != -1 && (file_stat.st_mode & S_IFMT) == S_IFREG);

}

#endif

cppcheck/cli/filelister.cpp at main · codingman/cppcheck · GitHub

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