Add iOS platform (refactor Mac into shared Apple platform impl)
This commit is contained in:
Wojtek Figat
532
Source/Engine/Platform/Apple/AppleFileSystem.cpp
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532
Source/Engine/Platform/Apple/AppleFileSystem.cpp
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@@ -0,0 +1,532 @@
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// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
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#if PLATFORM_MAC || PLATFORM_IOS
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#include "AppleFileSystem.h"
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#include "AppleUtils.h"
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#include "Engine/Platform/File.h"
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#include "Engine/Core/Types/String.h"
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#include "Engine/Core/Types/StringView.h"
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#include "Engine/Core/Types/TimeSpan.h"
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#include "Engine/Core/Math/Math.h"
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#include "Engine/Core/Log.h"
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#include "Engine/Utilities/StringConverter.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <cerrno>
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#include <dirent.h>
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#include <string.h>
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#include <stdlib.h>
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#include <fcntl.h>
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const DateTime UnixEpoch(1970, 1, 1);
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bool AppleFileSystem::CreateDirectory(const StringView& path)
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{
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const StringAsANSI<> pathAnsi(*path, path.Length());
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// Skip if already exists
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struct stat fileInfo;
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if (stat(pathAnsi.Get(), &fileInfo) != -1 && S_ISDIR(fileInfo.st_mode))
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{
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return false;
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}
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// Recursively do it all again for the parent directory, if any
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const int32 slashIndex = path.FindLast('/');
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if (slashIndex > 1)
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{
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if (CreateDirectory(path.Substring(0, slashIndex)))
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{
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return true;
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}
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}
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// Create the last directory on the path (the recursive calls will have taken care of the parent directories by now)
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return mkdir(pathAnsi.Get(), 0755) != 0 && errno != EEXIST;
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}
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bool DeletePathTree(const char* path)
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{
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size_t pathLength;
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DIR* dir;
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struct stat statPath, statEntry;
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struct dirent* entry;
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// Stat for the path
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stat(path, &statPath);
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// If path does not exists or is not dir - exit with status -1
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if (S_ISDIR(statPath.st_mode) == 0)
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{
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// Is not directory
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return true;
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}
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// If not possible to read the directory for this user
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if ((dir = opendir(path)) == NULL)
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{
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// Cannot open directory
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return true;
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}
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// The length of the path
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pathLength = strlen(path);
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// Iteration through entries in the directory
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while ((entry = readdir(dir)) != NULL)
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{
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// Skip entries "." and ".."
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if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, ".."))
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continue;
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// Determinate a full path of an entry
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char full_path[256];
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ASSERT(pathLength + strlen(entry->d_name) < ARRAY_COUNT(full_path));
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strcpy(full_path, path);
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strcat(full_path, "/");
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strcat(full_path, entry->d_name);
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// Stat for the entry
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stat(full_path, &statEntry);
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// Recursively remove a nested directory
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if (S_ISDIR(statEntry.st_mode) != 0)
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{
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if (DeletePathTree(full_path))
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return true;
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continue;
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}
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// Remove a file object
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if (unlink(full_path) != 0)
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return true;
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}
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// Remove the devastated directory and close the object of it
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if (rmdir(path) != 0)
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return true;
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closedir(dir);
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return false;
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}
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bool AppleFileSystem::DeleteDirectory(const String& path, bool deleteContents)
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{
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const StringAsANSI<> pathANSI(*path, path.Length());
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if (deleteContents)
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return DeletePathTree(pathANSI.Get());
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return rmdir(pathANSI.Get()) != 0;
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}
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bool AppleFileSystem::DirectoryExists(const StringView& path)
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{
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struct stat fileInfo;
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const StringAsANSI<> pathANSI(*path, path.Length());
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if (stat(pathANSI.Get(), &fileInfo) != -1)
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{
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return S_ISDIR(fileInfo.st_mode);
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}
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return false;
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}
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bool AppleFileSystem::DirectoryGetFiles(Array<String>& results, const String& path, const Char* searchPattern, DirectorySearchOption option)
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{
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const StringAsANSI<> pathANSI(*path, path.Length());
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const StringAsANSI<> searchPatternANSI(searchPattern);
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// Check if use only top directory
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if (option == DirectorySearchOption::TopDirectoryOnly)
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return getFilesFromDirectoryTop(results, pathANSI.Get(), searchPatternANSI.Get());
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return getFilesFromDirectoryAll(results, pathANSI.Get(), searchPatternANSI.Get());
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}
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bool AppleFileSystem::GetChildDirectories(Array<String>& results, const String& directory)
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{
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size_t pathLength;
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DIR* dir;
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struct stat statPath, statEntry;
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struct dirent* entry;
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const StringAsANSI<> pathANSI(*directory, directory.Length());
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const char* path = pathANSI.Get();
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// Stat for the path
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stat(path, &statPath);
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// If path does not exists or is not dir - exit with status -1
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if (S_ISDIR(statPath.st_mode) == 0)
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{
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// Is not directory
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return true;
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}
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// If not possible to read the directory for this user
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if ((dir = opendir(path)) == NULL)
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{
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// Cannot open directory
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return true;
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}
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// The length of the path
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pathLength = strlen(path);
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// Iteration through entries in the directory
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while ((entry = readdir(dir)) != NULL)
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{
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// Skip entries "." and ".."
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if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, ".."))
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continue;
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// Determinate a full path of an entry
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char full_path[256];
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ASSERT(pathLength + strlen(entry->d_name) < ARRAY_COUNT(full_path));
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strcpy(full_path, path);
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strcat(full_path, "/");
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strcat(full_path, entry->d_name);
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// Stat for the entry
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stat(full_path, &statEntry);
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// Check for directory
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if (S_ISDIR(statEntry.st_mode) != 0)
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{
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// Add directory
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results.Add(String(full_path));
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}
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}
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closedir(dir);
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return false;
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}
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bool AppleFileSystem::FileExists(const StringView& path)
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{
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struct stat fileInfo;
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const StringAsANSI<> pathANSI(*path, path.Length());
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if (stat(pathANSI.Get(), &fileInfo) != -1)
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{
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return S_ISREG(fileInfo.st_mode);
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}
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return false;
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}
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bool AppleFileSystem::DeleteFile(const StringView& path)
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{
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const StringAsANSI<> pathANSI(*path, path.Length());
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return unlink(pathANSI.Get()) == 0;
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}
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uint64 AppleFileSystem::GetFileSize(const StringView& path)
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{
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struct stat fileInfo;
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fileInfo.st_size = -1;
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const StringAsANSI<> pathANSI(*path, path.Length());
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if (stat(pathANSI.Get(), &fileInfo) != -1)
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{
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// Check for directories
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if (S_ISDIR(fileInfo.st_mode))
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{
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fileInfo.st_size = -1;
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}
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}
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return fileInfo.st_size;
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}
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bool AppleFileSystem::IsReadOnly(const StringView& path)
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{
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const StringAsANSI<> pathANSI(*path, path.Length());
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if (access(pathANSI.Get(), W_OK) == -1)
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{
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return errno == EACCES;
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}
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return false;
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}
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bool AppleFileSystem::SetReadOnly(const StringView& path, bool isReadOnly)
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{
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const StringAsANSI<> pathANSI(*path, path.Length());
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struct stat fileInfo;
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if (stat(pathANSI.Get(), &fileInfo) != -1)
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{
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if (isReadOnly)
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{
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fileInfo.st_mode &= ~S_IWUSR;
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}
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else
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{
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fileInfo.st_mode |= S_IWUSR;
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}
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return chmod(pathANSI.Get(), fileInfo.st_mode) == 0;
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}
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return false;
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}
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bool AppleFileSystem::MoveFile(const StringView& dst, const StringView& src, bool overwrite)
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{
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if (!overwrite && FileExists(dst))
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{
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// Already exists
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return true;
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}
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if (overwrite)
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{
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unlink(StringAsANSI<>(*dst, dst.Length()).Get());
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}
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if (rename(StringAsANSI<>(*src, src.Length()).Get(), StringAsANSI<>(*dst, dst.Length()).Get()) != 0)
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{
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if (errno == EXDEV)
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{
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if (!CopyFile(dst, src))
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{
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unlink(StringAsANSI<>(*src, src.Length()).Get());
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return false;
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}
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}
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return true;
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}
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return false;
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}
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bool AppleFileSystem::CopyFile(const StringView& dst, const StringView& src)
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{
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const StringAsANSI<> srcANSI(*src, src.Length());
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const StringAsANSI<> dstANSI(*dst, dst.Length());
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int srcFile, dstFile;
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char buffer[4096];
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ssize_t readSize;
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int cachedError;
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srcFile = open(srcANSI.Get(), O_RDONLY);
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if (srcFile < 0)
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return true;
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dstFile = open(dstANSI.Get(), O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
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if (dstFile < 0)
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goto out_error;
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while (readSize = read(srcFile, buffer, sizeof(buffer)), readSize > 0)
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{
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char* ptr = buffer;
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ssize_t writeSize;
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do
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{
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writeSize = write(dstFile, ptr, readSize);
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if (writeSize >= 0)
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{
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readSize -= writeSize;
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ptr += writeSize;
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}
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else if (errno != EINTR)
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{
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goto out_error;
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}
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} while (readSize > 0);
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}
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if (readSize == 0)
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{
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if (close(dstFile) < 0)
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{
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dstFile = -1;
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goto out_error;
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}
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close(srcFile);
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// Success
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return false;
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}
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out_error:
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cachedError = errno;
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close(srcFile);
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if (dstFile >= 0)
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close(dstFile);
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errno = cachedError;
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return true;
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}
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bool AppleFileSystem::getFilesFromDirectoryTop(Array<String>& results, const char* path, const char* searchPattern)
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{
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size_t pathLength;
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struct stat statPath, statEntry;
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struct dirent* entry;
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// Stat for the path
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stat(path, &statPath);
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// If path does not exists or is not dir - exit with status -1
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if (S_ISDIR(statPath.st_mode) == 0)
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{
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// Is not directory
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return true;
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}
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// If not possible to read the directory for this user
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DIR* dir = opendir(path);
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if (dir == NULL)
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{
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// Cannot open directory
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return true;
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}
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// The length of the path
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pathLength = strlen(path);
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// Iteration through entries in the directory
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while ((entry = readdir(dir)) != NULL)
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{
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// Skip entries "." and ".."
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if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, ".."))
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continue;
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// Determinate a full path of an entry
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char fullPath[256];
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ASSERT(pathLength + strlen(entry->d_name) < ARRAY_COUNT(fullPath));
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strcpy(fullPath, path);
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strcat(fullPath, "/");
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strcat(fullPath, entry->d_name);
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// Stat for the entry
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stat(fullPath, &statEntry);
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// Check for file
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if (S_ISREG(statEntry.st_mode) != 0)
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{
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// Validate with filter
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const int32 fullPathLength = StringUtils::Length(fullPath);
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const int32 searchPatternLength = StringUtils::Length(searchPattern);
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if (searchPatternLength == 0 || StringUtils::Compare(searchPattern, "*") == 0)
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{
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// All files
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}
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else if (searchPattern[0] == '*' && searchPatternLength < fullPathLength && StringUtils::Compare(fullPath + fullPathLength - searchPatternLength + 1, searchPattern + 1, searchPatternLength - 1) == 0)
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{
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// Path ending
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}
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else
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{
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// TODO: implement all cases in a generic way
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continue;
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}
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// Add file
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results.Add(String(fullPath));
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}
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}
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closedir(dir);
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return false;
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}
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bool AppleFileSystem::getFilesFromDirectoryAll(Array<String>& results, const char* path, const char* searchPattern)
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{
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// Find all files in this directory
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getFilesFromDirectoryTop(results, path, searchPattern);
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size_t pathLength;
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DIR* dir;
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struct stat statPath, statEntry;
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struct dirent* entry;
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// Stat for the path
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stat(path, &statPath);
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// If path does not exists or is not dir - exit with status -1
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if (S_ISDIR(statPath.st_mode) == 0)
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{
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// Is not directory
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return true;
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}
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// If not possible to read the directory for this user
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if ((dir = opendir(path)) == NULL)
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{
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// Cannot open directory
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return true;
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}
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// The length of the path
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pathLength = strlen(path);
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// Iteration through entries in the directory
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while ((entry = readdir(dir)) != NULL)
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{
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// Skip entries "." and ".."
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if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, ".."))
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continue;
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// Determinate a full path of an entry
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char full_path[256];
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ASSERT(pathLength + strlen(entry->d_name) < ARRAY_COUNT(full_path));
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strcpy(full_path, path);
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strcat(full_path, "/");
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strcat(full_path, entry->d_name);
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// Stat for the entry
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stat(full_path, &statEntry);
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// Check for directory
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if (S_ISDIR(statEntry.st_mode) != 0)
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{
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if (getFilesFromDirectoryAll(results, full_path, searchPattern))
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{
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closedir(dir);
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return true;
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}
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}
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}
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closedir(dir);
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return false;
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}
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DateTime AppleFileSystem::GetFileLastEditTime(const StringView& path)
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{
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struct stat fileInfo;
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const StringAsANSI<> pathANSI(*path, path.Length());
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if (stat(pathANSI.Get(), &fileInfo) == -1)
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{
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return DateTime::MinValue();
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}
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const TimeSpan timeSinceEpoch(0, 0, fileInfo.st_mtime);
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return UnixEpoch + timeSinceEpoch;
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}
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void AppleFileSystem::GetSpecialFolderPath(const SpecialFolder type, String& result)
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{
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String home;
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Platform::GetEnvironmentVariable(TEXT("HOME"), home);
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switch (type)
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{
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case SpecialFolder::Desktop:
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result = home / TEXT("/Desktop");
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break;
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case SpecialFolder::Documents:
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result = home / TEXT("/Documents");
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break;
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case SpecialFolder::Pictures:
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result = home / TEXT("/Pictures");
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break;
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case SpecialFolder::AppData:
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case SpecialFolder::LocalAppData:
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result = home / TEXT("/Library/Caches");
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break;
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case SpecialFolder::ProgramData:
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result = home / TEXT("/Library/Application Support");
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break;
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case SpecialFolder::Temporary:
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Platform::GetEnvironmentVariable(TEXT("TMPDIR"), result);
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break;
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}
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}
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#endif
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