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VVVVVV/desktop_version/src/FileSystemUtils.cpp

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#include "FileSystemUtils.h"
#include <vector>
#include <string>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iterator>
#include <algorithm>
#include <iostream>
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#include <SDL.h>
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#include <physfs.h>
#include "tinyxml.h"
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#if defined(_WIN32)
#include <windows.h>
#include <shlobj.h>
#include <shellapi.h>
int mkdir(char* path, int mode)
{
WCHAR utf16_path[MAX_PATH];
MultiByteToWideChar(CP_UTF8, 0, path, -1, utf16_path, MAX_PATH);
return CreateDirectoryW(utf16_path, NULL);
}
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#define VNEEDS_MIGRATION (mkdirResult != 0)
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#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__HAIKU__)
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#include <sys/stat.h>
#include <limits.h>
#define VNEEDS_MIGRATION (mkdirResult == 0)
/* These are needed for PLATFORM_* crap */
#include <unistd.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <spawn.h>
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#define MAX_PATH PATH_MAX
#endif
char saveDir[MAX_PATH];
char levelDir[MAX_PATH];
void PLATFORM_getOSDirectory(char* output);
void PLATFORM_migrateSaveData(char* output);
void PLATFORM_copyFile(const char *oldLocation, const char *newLocation);
int FILESYSTEM_init(char *argvZero, char* baseDir, char *assetsPath)
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{
char output[MAX_PATH];
int mkdirResult;
const char* pathSep = PHYSFS_getDirSeparator();
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PHYSFS_init(argvZero);
PHYSFS_permitSymbolicLinks(1);
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/* Determine the OS user directory */
if (baseDir && strlen(baseDir) > 0)
{
strcpy(output, baseDir);
/* We later append to this path and assume it ends in a slash */
if (strcmp(std::string(1, output[strlen(output) - 1]).c_str(), pathSep) != 0)
{
strcat(output, pathSep);
}
}
else
{
PLATFORM_getOSDirectory(output);
}
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/* Create base user directory, mount */
mkdirResult = mkdir(output, 0777);
/* Mount our base user directory */
PHYSFS_mount(output, NULL, 1);
PHYSFS_setWriteDir(output);
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printf("Base directory: %s\n", output);
/* Create save directory */
strcpy(saveDir, output);
strcat(saveDir, "saves");
strcat(saveDir, PHYSFS_getDirSeparator());
mkdir(saveDir, 0777);
printf("Save directory: %s\n", saveDir);
/* Create level directory */
strcpy(levelDir, output);
strcat(levelDir, "levels");
strcat(levelDir, PHYSFS_getDirSeparator());
mkdirResult |= mkdir(levelDir, 0777);
printf("Level directory: %s\n", levelDir);
/* We didn't exist until now, migrate files! */
if (VNEEDS_MIGRATION)
{
PLATFORM_migrateSaveData(output);
}
/* Mount the stock content last */
if (assetsPath) {
strcpy(output, assetsPath);
} else {
strcpy(output, PHYSFS_getBaseDir());
strcat(output, "data.zip");
}
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if (!PHYSFS_mount(output, NULL, 1))
{
puts("Error: data.zip missing!");
puts("You do not have data.zip!");
puts("Grab it from your purchased copy of the game,");
puts("or get it from the free Make and Play Edition.");
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SDL_ShowSimpleMessageBox(
SDL_MESSAGEBOX_ERROR,
"data.zip missing!",
"You do not have data.zip!"
"\n\nGrab it from your purchased copy of the game,"
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"\nor get it from the free Make and Play Edition.",
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NULL
);
return 0;
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}
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strcpy(output, PHYSFS_getBaseDir());
strcpy(output, "gamecontrollerdb.txt");
if (SDL_GameControllerAddMappingsFromFile(output) < 0)
{
printf("gamecontrollerdb.txt not found!\n");
}
return 1;
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}
void FILESYSTEM_deinit()
{
PHYSFS_deinit();
}
char *FILESYSTEM_getUserSaveDirectory()
{
return saveDir;
}
char *FILESYSTEM_getUserLevelDirectory()
{
return levelDir;
}
void FILESYSTEM_loadFileToMemory(const char *name, unsigned char **mem,
size_t *len, bool addnull)
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{
if (strcmp(name, "levels/special/stdin.vvvvvv") == 0) {
// this isn't *technically* necessary when piping directly from a file, but checking for that is annoying
static std::vector<char> STDIN_BUFFER;
static bool STDIN_LOADED = false;
if (!STDIN_LOADED) {
std::istreambuf_iterator<char> begin(std::cin), end;
STDIN_BUFFER.assign(begin, end);
STDIN_BUFFER.push_back(0); // there's no observable change in behavior if addnull is always true, but not vice versa
STDIN_LOADED = true;
}
size_t length = STDIN_BUFFER.size() - 1;
if (len != NULL) {
*len = length;
}
++length;
*mem = static_cast<unsigned char*>(malloc(length)); // STDIN_BUFFER.data() causes double-free
std::copy(STDIN_BUFFER.begin(), STDIN_BUFFER.end(), reinterpret_cast<char*>(*mem));
return;
}
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PHYSFS_File *handle = PHYSFS_openRead(name);
if (handle == NULL)
{
return;
}
PHYSFS_uint32 length = PHYSFS_fileLength(handle);
if (len != NULL)
{
*len = length;
}
if (addnull)
{
*mem = (unsigned char *) malloc(length + 1);
(*mem)[length] = 0;
}
else
{
*mem = (unsigned char*) malloc(length);
}
int success = PHYSFS_readBytes(handle, *mem, length);
if (success == -1)
{
FILESYSTEM_freeMemory(mem);
}
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PHYSFS_close(handle);
}
void FILESYSTEM_freeMemory(unsigned char **mem)
{
free(*mem);
*mem = NULL;
}
bool FILESYSTEM_saveTiXmlDocument(const char *name, TiXmlDocument *doc)
{
/* TiXmlDocument.SaveFile doesn't account for Unicode paths, PHYSFS does */
TiXmlPrinter printer;
doc->Accept(&printer);
PHYSFS_File* handle = PHYSFS_openWrite(name);
if (handle == NULL)
{
return false;
}
PHYSFS_writeBytes(handle, printer.CStr(), printer.Size());
PHYSFS_close(handle);
return true;
}
bool FILESYSTEM_loadTiXmlDocument(const char *name, TiXmlDocument *doc)
{
/* TiXmlDocument.SaveFile doesn't account for Unicode paths, PHYSFS does */
unsigned char *mem = NULL;
FILESYSTEM_loadFileToMemory(name, &mem, NULL, true);
if (mem == NULL)
{
return false;
}
doc->Parse((const char*)mem, NULL, TIXML_ENCODING_UTF8);
FILESYSTEM_freeMemory(&mem);
return true;
}
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std::vector<std::string> FILESYSTEM_getLevelDirFileNames()
{
std::vector<std::string> list;
char **fileList = PHYSFS_enumerateFiles("/levels");
char **i;
std::string builtLocation;
for (i = fileList; *i != NULL; i++)
{
if (strcmp(*i, "data") == 0)
{
continue; /* FIXME: lolwut -flibit */
}
builtLocation = "levels/";
builtLocation += *i;
list.push_back(builtLocation);
}
PHYSFS_freeList(fileList);
return list;
}
void PLATFORM_getOSDirectory(char* output)
{
#ifdef _WIN32
/* This block is here for compatibility, do not touch it! */
WCHAR utf16_path[MAX_PATH];
SHGetFolderPathW(NULL, CSIDL_PERSONAL, NULL, SHGFP_TYPE_CURRENT, utf16_path);
WideCharToMultiByte(CP_UTF8, 0, utf16_path, -1, output, MAX_PATH, NULL, NULL);
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strcat(output, "\\VVVVVV\\");
#else
strcpy(output, PHYSFS_getPrefDir("distractionware", "VVVVVV"));
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#endif
}
void PLATFORM_migrateSaveData(char* output)
{
char oldLocation[MAX_PATH];
char newLocation[MAX_PATH];
char oldDirectory[MAX_PATH];
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#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__HAIKU__)
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DIR *dir = NULL;
struct dirent *de = NULL;
DIR *subDir = NULL;
struct dirent *subDe = NULL;
char subDirLocation[MAX_PATH];
const char *homeDir = getenv("HOME");
if (homeDir == NULL)
{
/* Uhh, I don't want to get near this. -flibit */
return;
}
strcpy(oldDirectory, homeDir);
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#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__HAIKU__)
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strcat(oldDirectory, "/.vvvvvv/");
#elif defined(__APPLE__)
strcat(oldDirectory, "/Documents/VVVVVV/");
#endif
dir = opendir(oldDirectory);
if (!dir)
{
printf("Could not find directory %s\n", oldDirectory);
return;
}
printf("Migrating old savedata to new location...\n");
for (de = readdir(dir); de != NULL; de = readdir(dir))
{
if ( strcmp(de->d_name, "..") == 0 ||
strcmp(de->d_name, ".") == 0 )
{
continue;
}
#define COPY_SAVEFILE(name) \
else if (strcmp(de->d_name, name) == 0) \
{ \
strcpy(oldLocation, oldDirectory); \
strcat(oldLocation, name); \
strcpy(newLocation, output); \
strcat(newLocation, "saves/"); \
strcat(newLocation, name); \
PLATFORM_copyFile(oldLocation, newLocation); \
}
COPY_SAVEFILE("unlock.vvv")
COPY_SAVEFILE("tsave.vvv")
COPY_SAVEFILE("qsave.vvv")
#undef COPY_SAVEFILE
else if (strstr(de->d_name, ".vvvvvv.vvv") != NULL)
{
strcpy(oldLocation, oldDirectory);
strcat(oldLocation, de->d_name);
strcpy(newLocation, output);
strcat(newLocation, "saves/");
strcat(newLocation, de->d_name);
PLATFORM_copyFile(oldLocation, newLocation);
}
else if (strstr(de->d_name, ".vvvvvv") != NULL)
{
strcpy(oldLocation, oldDirectory);
strcat(oldLocation, de->d_name);
strcpy(newLocation, output);
strcat(newLocation, "levels/");
strcat(newLocation, de->d_name);
PLATFORM_copyFile(oldLocation, newLocation);
}
else if (strcmp(de->d_name, "Saves") == 0)
{
strcpy(subDirLocation, oldDirectory);
strcat(subDirLocation, "Saves/");
subDir = opendir(subDirLocation);
if (!subDir)
{
printf("Could not open Saves/ subdir!\n");
continue;
}
for (
subDe = readdir(subDir);
subDe != NULL;
subDe = readdir(subDir)
) {
#define COPY_SAVEFILE(name) \
(strcmp(subDe->d_name, name) == 0) \
{ \
strcpy(oldLocation, subDirLocation); \
strcat(oldLocation, name); \
strcpy(newLocation, output); \
strcat(newLocation, "saves/"); \
strcat(newLocation, name); \
PLATFORM_copyFile(oldLocation, newLocation); \
}
if COPY_SAVEFILE("unlock.vvv")
else if COPY_SAVEFILE("tsave.vvv")
else if COPY_SAVEFILE("qsave.vvv")
#undef COPY_SAVEFILE
}
}
}
#elif defined(_WIN32)
WIN32_FIND_DATA findHandle;
HANDLE hFind = NULL;
char fileSearch[MAX_PATH];
/* Same place, different layout. */
strcpy(oldDirectory, output);
/* In theory we don't need to worry about this, thanks case insensitivity!
sprintf(fileSearch, "%s\\Saves\\*.vvv", oldDirectory);
hFind = FindFirstFile(fileSearch, &findHandle);
if (hFind == INVALID_HANDLE_VALUE)
{
printf("Could not find directory %s\\Saves\\\n", oldDirectory);
}
else do
{
if ((findHandle.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
{
#define COPY_SAVEFILE(name) \
(strcmp(findHandle.cFileName, name) == 0) \
{ \
strcpy(oldLocation, oldDirectory); \
strcat(oldLocation, "Saves\\"); \
strcat(oldLocation, name); \
strcpy(newLocation, output); \
strcat(newLocation, "saves\\"); \
strcat(newLocation, name); \
PLATFORM_copyFile(oldLocation, newLocation); \
}
if COPY_SAVEFILE("unlock.vvv")
else if COPY_SAVEFILE("tsave.vvv")
else if COPY_SAVEFILE("qsave.vvv")
#undef COPY_SAVEFILE
}
} while (FindNextFile(hFind, &findHandle));
*/
sprintf(fileSearch, "%s\\*.vvvvvv", oldDirectory);
hFind = FindFirstFile(fileSearch, &findHandle);
if (hFind == INVALID_HANDLE_VALUE)
{
printf("Could not find directory %s\n", oldDirectory);
}
else do
{
if ((findHandle.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
{
strcpy(oldLocation, oldDirectory);
strcat(oldLocation, findHandle.cFileName);
strcpy(newLocation, output);
strcat(newLocation, "levels\\");
strcat(newLocation, findHandle.cFileName);
PLATFORM_copyFile(oldLocation, newLocation);
}
} while (FindNextFile(hFind, &findHandle));
#else
#error See PLATFORM_migrateSaveData
#endif
}
void PLATFORM_copyFile(const char *oldLocation, const char *newLocation)
{
char *data;
long int length;
/* Read data */
FILE *file = fopen(oldLocation, "rb");
if (!file)
{
printf("Cannot open/copy %s\n", oldLocation);
return;
}
fseek(file, 0, SEEK_END);
length = ftell(file);
fseek(file, 0, SEEK_SET);
data = (char*) malloc(length);
fread(data, 1, length, file);
fclose(file);
/* Write data */
file = fopen(newLocation, "wb");
if (!file)
{
printf("Could not write to %s\n", newLocation);
free(data);
return;
}
fwrite(data, 1, length, file);
fclose(file);
free(data);
/* WTF did we just do */
printf("Copied:\n\tOld: %s\n\tNew: %s\n", oldLocation, newLocation);
}
#ifdef _WIN32
bool FILESYSTEM_openDirectoryEnabled()
{
return true;
}
bool FILESYSTEM_openDirectory(const char *dname)
{
ShellExecute(NULL, "open", dname, NULL, NULL, SW_SHOWMINIMIZED);
return true;
}
#elif defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__HAIKU__)
bool FILESYSTEM_openDirectoryEnabled()
{
return std::getenv("SteamTenfoot") == NULL;
}
#ifdef __linux__
const char* open_cmd = "xdg-open";
#else
const char* open_cmd = "open";
#endif
extern "C" char** environ;
bool FILESYSTEM_openDirectory(const char *dname)
{
pid_t child;
// This const_cast is legal (ctrl-f "The statement" at https://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html
char* argv[3] = {const_cast<char*>(open_cmd), const_cast<char*>(dname), NULL};
posix_spawnp(&child, open_cmd, NULL, NULL, argv, environ);
int status = 0;
waitpid(child, &status, 0);
return WIFEXITED(status) && WEXITSTATUS(status) == 0;
}
#else
bool FILESYSTEM_openDirectoryEnabled()
{
return false;
}
bool FILESYSTEM_openDirectory(const char *dname)
{
return false;
}
#endif