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22bb757726
POSIX.1-2008 ensures realpath() give a dynamically allocated buffer if NULL is passed, which avoids using PATH_MAX, which may be too large to fit in stack, or even undefined on some systems.
113 lines
2.7 KiB
C++
113 lines
2.7 KiB
C++
/* filesystem.c
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Copyright (c) 2023, Nikolaj Schlej. All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*/
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#include "filesystem.h"
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#include <sys/stat.h>
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#include <fstream>
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bool readFileIntoBuffer(const UString& inPath, UByteArray& buf)
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{
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if (!isExistOnFs(inPath))
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return false;
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std::ifstream inputFile(inPath.toLocal8Bit(), std::ios::in | std::ios::binary);
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if (!inputFile)
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return false;
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std::vector<char> buffer(std::istreambuf_iterator<char>(inputFile),
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(std::istreambuf_iterator<char>()));
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inputFile.close();
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buf = buffer;
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return true;
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}
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#if defined(_WIN32) || defined(__MINGW32__)
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#include <direct.h>
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#include <stdlib.h>
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bool isExistOnFs(const UString & path)
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{
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struct _stat buf;
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return (_stat(path.toLocal8Bit(), &buf) == 0);
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}
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bool makeDirectory(const UString & dir)
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{
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return (_mkdir(dir.toLocal8Bit()) == 0);
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}
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bool changeDirectory(const UString & dir)
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{
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return (_chdir(dir.toLocal8Bit()) == 0);
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}
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bool removeDirectory(const UString & dir)
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{
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int r = _rmdir(dir.toLocal8Bit());
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// Hack: unlike *nix, Windows does not permit deleting current directories
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if (r < 0 && errno == EACCES && changeDirectory(dir + UString("/../"))) {
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return (_rmdir(dir.toLocal8Bit()) == 0);
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}
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return (r == 0);
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}
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UString getAbsPath(const UString & path)
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{
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char * abs = (char*)calloc(0x8000, 1);
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UString new_path;
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if (_fullpath(abs, path.toLocal8Bit(), 0x8000))
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new_path = UString(abs);
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else
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new_path = path;
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free(abs);
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return new_path;
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}
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#else
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#include <unistd.h>
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#include <stdlib.h>
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#if !defined(ACCESSPERMS)
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#define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO)
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#endif
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bool isExistOnFs(const UString & path)
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{
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struct stat buf;
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return (stat(path.toLocal8Bit(), &buf) == 0);
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}
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bool makeDirectory(const UString & dir)
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{
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return (mkdir(dir.toLocal8Bit(), ACCESSPERMS) == 0);
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}
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bool removeDirectory(const UString & dir)
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{
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return (rmdir(dir.toLocal8Bit()) == 0);
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}
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bool changeDirectory(const UString & dir)
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{
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return (chdir(dir.toLocal8Bit()) == 0);
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}
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UString getAbsPath(const UString & path) {
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char * abs = realpath(path.toLocal8Bit(), nullptr);
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// Last is a non-standard extension for non-existent files
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UString new_path;
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if (abs)
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new_path = UString(abs);
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else
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new_path = path;
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free(abs);
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return new_path;
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}
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#endif
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