Checkpoint/switch/source/io.cpp
BernardoGiordano 0e928546dc fix #72
2018-05-11 18:07:13 +02:00

321 lines
No EOL
8.1 KiB
C++

/*
* This file is part of Checkpoint
* Copyright (C) 2017-2018 Bernardo Giordano
*
* 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/>.
*
* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
* * Requiring preservation of specified reasonable legal notices or
* author attributions in that material or in the Appropriate Legal
* Notices displayed by works containing it.
* * Prohibiting misrepresentation of the origin of that material,
* or requiring that modified versions of such material be marked in
* reasonable ways as different from the original version.
*/
#include "io.hpp"
bool io::fileExists(const std::string& path)
{
struct stat buffer;
return (stat (path.c_str(), &buffer) == 0);
}
void io::copyFile(const std::string& srcPath, const std::string& dstPath)
{
FILE* src = fopen(srcPath.c_str(), "rb");
FILE* dst = fopen(dstPath.c_str(), "wb");
if (src == NULL || dst == NULL)
{
return;
}
fseek(src, 0, SEEK_END);
u64 sz = ftell(src);
rewind(src);
size_t size;
char* buf = new char[BUFFER_SIZE];
u64 offset = 0;
size_t slashpos = srcPath.rfind("/");
std::string name = srcPath.substr(slashpos + 1, srcPath.length() - slashpos - 1);
while ((size = fread(buf, 1, BUFFER_SIZE, src)) > 0)
{
fwrite(buf, 1, size, dst);
offset += size;
Gui::drawCopy(name, offset, sz);
}
delete[] buf;
fclose(src);
fclose(dst);
}
Result io::copyDirectory(const std::string& srcPath, const std::string& dstPath)
{
Result res = 0;
bool quit = false;
Directory items(srcPath);
if (!items.good())
{
return items.error();
}
for (size_t i = 0, sz = items.size(); i < sz && !quit; i++)
{
std::string newsrc = srcPath + items.entry(i);
std::string newdst = dstPath + items.entry(i);
if (items.folder(i))
{
res = io::createDirectory(newdst);
if (R_SUCCEEDED(res))
{
newsrc += "/";
newdst += "/";
res = io::copyDirectory(newsrc, newdst);
}
else
{
quit = true;
}
}
else
{
io::copyFile(newsrc, newdst);
}
}
return 0;
}
Result io::createDirectory(const std::string& path)
{
mkdir(path.c_str(), 777);
return 0;
}
bool io::directoryExists(const std::string& path)
{
struct stat sb;
return (stat(path.c_str(), &sb) == 0 && S_ISDIR(sb.st_mode));
}
// https://stackoverflow.com/questions/2256945/removing-a-non-empty-directory-programmatically-in-c-or-c
int io::deleteFolderRecursively(const char* path)
{
DIR *d = opendir(path);
size_t path_len = strlen(path);
int r = -1;
if (d)
{
struct dirent *p;
r = 0;
while (!r && (p=readdir(d)))
{
int r2 = -1;
char *buf;
size_t len;
/* Skip the names "." and ".." as we don't want to recurse on them. */
if (!strcmp(p->d_name, ".") || !strcmp(p->d_name, ".."))
{
continue;
}
len = path_len + strlen(p->d_name) + 2;
buf = new char[len];
if (buf)
{
struct stat statbuf;
snprintf(buf, len, "%s/%s", path, p->d_name);
if (!stat(buf, &statbuf))
{
if (S_ISDIR(statbuf.st_mode))
{
r2 = io::deleteFolderRecursively(buf);
}
else
{
r2 = unlink(buf);
}
}
delete[] buf;
}
r = r2;
}
closedir(d);
}
if (!r)
{
r = rmdir(path);
}
if (!r)
{
return r;
}
return 0;
}
void io::backup(size_t index)
{
// check if multiple selection is enabled and don't ask for confirmation if that's the case
if (!Gui::multipleSelectionEnabled())
{
if (!Gui::askForConfirmation("Backup selected save?"))
{
return;
}
}
const size_t cellIndex = Gui::index(CELLS);
const bool isNewFolder = cellIndex == 0;
Result res = 0;
Title title;
getTitle(title, index);
FsFileSystem fileSystem;
res = FileSystem::mount(&fileSystem, title.id(), title.userId());
if (R_SUCCEEDED(res))
{
int ret = FileSystem::mount(fileSystem);
if (ret == -1)
{
FileSystem::unmount();
Gui::createError(-2, "Failed to mount save.");
return;
}
}
else
{
Gui::createError(res, "Failed to mount save.");
return;
}
std::string suggestion = DateTime::dateTimeStr() + " " + Account::username(title.userId());
std::string customPath;
if (Gui::multipleSelectionEnabled())
{
customPath = isNewFolder ? suggestion : Gui::nameFromCell(CELLS, cellIndex);
}
else
{
customPath = isNewFolder ? StringUtils::removeForbiddenCharacters(hbkbd::keyboard(suggestion)) : Gui::nameFromCell(CELLS, cellIndex);
}
std::string dstPath = title.path() + "/" + customPath;
if (!isNewFolder || io::directoryExists(dstPath))
{
int ret = io::deleteFolderRecursively(dstPath.c_str());
if (ret != 0)
{
FileSystem::unmount();
Gui::createError((Result)ret, "Failed to delete the existing backup directory recursively.");
return;
}
}
res = io::createDirectory(dstPath);
res = io::copyDirectory("save:/", dstPath + "/");
if (R_FAILED(res))
{
FileSystem::unmount();
io::deleteFolderRecursively(dstPath.c_str());
Gui::createError(res, "Failed to backup save.");
return;
}
refreshDirectories(title.id());
FileSystem::unmount();
Gui::createInfo("Success!", "Progress correctly saved to disk.");
}
void io::restore(size_t index)
{
const size_t cellIndex = Gui::index(CELLS);
if (cellIndex == 0 || !Gui::askForConfirmation("Restore selected save?"))
{
return;
}
Result res = 0;
Title title;
getTitle(title, index);
FsFileSystem fileSystem;
res = FileSystem::mount(&fileSystem, title.id(), title.userId());
if (R_SUCCEEDED(res))
{
int ret = FileSystem::mount(fileSystem);
if (ret == -1)
{
FileSystem::unmount();
Gui::createError(-2, "Failed to mount save.");
return;
}
}
else
{
Gui::createError(res, "Failed to mount save.");
return;
}
std::string srcPath = title.path() + "/" + Gui::nameFromCell(CELLS, cellIndex) + "/";
std::string dstPath = "save:/";
res = io::deleteFolderRecursively(dstPath.c_str());
if (R_FAILED(res))
{
FileSystem::unmount();
Gui::createError(res, "Failed to delete save.");
return;
}
res = io::copyDirectory(srcPath, dstPath);
if (R_FAILED(res))
{
FileSystem::unmount();
Gui::createError(res, "Failed to restore save.");
return;
}
res = fsdevCommitDevice("save");
if (R_FAILED(res))
{
Gui::createError(res, "Failed to commit to save device.");
}
else
{
Gui::createInfo("Success!", Gui::nameFromCell(CELLS, cellIndex) + " has been restored\nsuccessfully.");
}
FileSystem::unmount();
}