Provide separate filesystem.cpp

common/filesystem.cpp

@@ -0,0 +1,92 @@
+/* filesystem.c
+
+Copyright (c) 2023, Nikolaj Schlej. All rights reserved.
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+*/
+
+#include "filesystem.h"
+#include <sys/stat.h>
+#include <fstream>
+
+USTATUS readFileIntoBuffer(const UString& inPath, UByteArray& buf) {
+    if (!isExistOnFs(inPath))
+        return U_FILE_OPEN;
+
+    std::ifstream inputFile(inPath.toLocal8Bit(), std::ios::in | std::ios::binary);
+    if (!inputFile)
+        return U_FILE_OPEN;
+    std::vector<char> buffer(std::istreambuf_iterator<char>(inputFile),
+        (std::istreambuf_iterator<char>()));
+    inputFile.close();
+
+    buf = buffer;
+
+    return U_SUCCESS;
+}
+
+
+#if defined(_WIN32) || defined(__MINGW32__)
+#include <direct.h>
+#include <stdlib.h>
+bool isExistOnFs(const UString & path) {
+    struct _stat buf;
+    return (_stat(path.toLocal8Bit(), &buf) == 0);
+}
+
+bool makeDirectory(const UString & dir) {
+    return (_mkdir(dir.toLocal8Bit()) == 0);
+}
+
+bool changeDirectory(const UString & dir) {
+    return (_chdir(dir.toLocal8Bit()) == 0);
+}
+
+void removeDirectory(const UString & dir) {
+    int r = _rmdir(dir.toLocal8Bit());
+    // Hack: unlike *nix, Windows does not permit deleting current directories.
+    if (r < 0 && errno == EACCES && changeDirectory(dir + UString("/../"))) {
+        (void)_rmdir(dir.toLocal8Bit());
+    }
+}
+
+UString getAbsPath(const UString & path) {
+    char abs[_MAX_PATH] = {};
+    if (_fullpath(abs, path.toLocal8Bit(), sizeof(abs)))
+        return UString(abs);
+    return path;
+}
+#else
+#include <unistd.h>
+#include <stdlib.h>
+bool isExistOnFs(const UString & path) {
+    struct stat buf;
+    return (stat(path.toLocal8Bit(), &buf) == 0);
+}
+
+bool makeDirectory(const UString & dir) {
+    return (mkdir(dir.toLocal8Bit(), ACCESSPERMS) == 0);
+}
+
+void removeDirectory(const UString & dir) {
+    rmdir(dir.toLocal8Bit());
+}
+
+bool changeDirectory(const UString & dir) {
+    return (chdir(dir.toLocal8Bit()) == 0);
+}
+
+UString getAbsPath(const UString & path) {
+    char abs[PATH_MAX] = {};
+    // Last is a non-standard extension for non-existent files.
+    if (realpath(path.toLocal8Bit(), abs) || abs[0] != '\0')
+        return UString(abs);
+    return path;
+}
+#endif