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476 lines (435 loc) · 10.3 KB
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/*
* Copyright 2010-2013 OpenXcom Developers.
*
* This file is part of OpenXcom.
*
* OpenXcom 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.
*
* OpenXcom 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 OpenXcom. If not, see <http://www.gnu.org/licenses/>.
*/
#include "CrossPlatform.h"
#include <algorithm>
#include <iostream>
#include "../dirent.h"
#include "Logger.h"
#include "Exception.h"
#include "Options.h"
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <shlobj.h>
#include <shlwapi.h>
#include <direct.h>
#ifndef SHGFP_TYPE_CURRENT
#define SHGFP_TYPE_CURRENT 0
#endif
#pragma comment(lib, "advapi32.lib")
#pragma comment(lib, "shell32.lib")
#pragma comment(lib, "shlwapi.lib")
#else
#include <sys/stat.h>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <unistd.h>
#include <sys/param.h>
#include <sys/types.h>
#include <pwd.h>
#endif
namespace OpenXcom
{
namespace CrossPlatform
{
#ifdef _WIN32
const char PATH_SEPARATOR = '\\';
#else
const char PATH_SEPARATOR = '/';
#endif
/**
* Displays a message box with an error message.
* @param error Error message.
*/
void showError(const std::string &error)
{
#ifdef _WIN32
MessageBoxA(NULL, error.c_str(), "OpenXcom Error", MB_ICONERROR | MB_OK);
#else
std::cerr << error << std::endl;
#endif
Log(LOG_FATAL) << error;
}
/**
* Gets the user's home folder according to the system.
* @return Absolute path to home folder.
*/
static char const *getHome()
{
char const *home = getenv("HOME");
#ifndef _WIN32
if (!home)
{
struct passwd *const pwd = getpwuid(getuid());
home = pwd->pw_dir;
}
#endif
return home;
}
/**
* Builds a list of predefined paths for the Data folder
* according to the running system.
* @return List of data paths.
*/
std::vector<std::string> findDataFolders()
{
std::vector<std::string> list;
#ifdef _WIN32
char path[MAX_PATH];
// Get Documents folder
if (SUCCEEDED(SHGetFolderPathA(NULL, CSIDL_PERSONAL, NULL, SHGFP_TYPE_CURRENT, path)))
{
PathAppendA(path, "OpenXcom\\data\\");
list.push_back(path);
}
// Get binary directory
if (GetModuleFileNameA(NULL, path, MAX_PATH) != 0)
{
PathRemoveFileSpecA(path);
PathAppendA(path, "data\\");
list.push_back(path);
}
// Get working directory
if (GetCurrentDirectoryA(MAX_PATH, path) != 0)
{
PathAppendA(path, "data\\");
list.push_back(path);
}
#else
#ifdef __HAIKU__
list.push_back("/boot/apps/OpenXcom/data/");
#endif
char const *home = getHome();
char path[MAXPATHLEN];
// Get user-specific data folders
if (char const *const xdg_data_home = getenv("XDG_DATA_HOME"))
{
snprintf(path, MAXPATHLEN, "%s/openxcom/data/", xdg_data_home);
}
else
{
#ifdef __APPLE__
snprintf(path, MAXPATHLEN, "%s/Library/Application Support/OpenXcom/data/", home);
#else
snprintf(path, MAXPATHLEN, "%s/.local/share/openxcom/data/", home);
#endif
}
list.push_back(path);
// Get global data folders
if (char *xdg_data_dirs = getenv("XDG_DATA_DIRS"))
{
char *dir = strtok(xdg_data_dirs, ":");
while (dir != 0)
{
snprintf(path, MAXPATHLEN, "%s/openxcom/data/", dir);
list.push_back(path);
dir = strtok(0, ":");
}
}
else
{
#ifdef __APPLE__
snprintf(path, MAXPATHLEN, "%s/Users/Shared/OpenXcom/data/", home);
list.push_back(path);
#else
list.push_back("/usr/local/share/openxcom/data/");
list.push_back("/usr/share/openxcom/data/");
#endif
}
// Get working directory
list.push_back("./data/");
#endif
return list;
}
/**
* Builds a list of predefined paths for the User folder
* according to the running system.
* @return List of data paths.
*/
std::vector<std::string> findUserFolders()
{
std::vector<std::string> list;
#ifdef _WIN32
char path[MAX_PATH];
// Get Documents folder
if (SUCCEEDED(SHGetFolderPathA(NULL, CSIDL_PERSONAL, NULL, SHGFP_TYPE_CURRENT, path)))
{
PathAppendA(path, "OpenXcom\\");
list.push_back(path);
}
// Get binary directory
if (GetModuleFileNameA(NULL, path, MAX_PATH) != 0)
{
PathRemoveFileSpecA(path);
PathAppendA(path, "user\\");
list.push_back(path);
}
// Get working directory
if (GetCurrentDirectoryA(MAX_PATH, path) != 0)
{
PathAppendA(path, "user\\");
list.push_back(path);
}
#else
#ifdef __HAIKU__
list.push_back("/boot/apps/OpenXcom/");
#endif
char const *home = getHome();
char path[MAXPATHLEN];
// Get user folders
if (char const *const xdg_data_home = getenv("XDG_DATA_HOME"))
{
snprintf(path, MAXPATHLEN, "%s/openxcom/", xdg_data_home);
}
else
{
#ifdef __APPLE__
snprintf(path, MAXPATHLEN, "%s/Library/Application Support/OpenXcom/", home);
#else
snprintf(path, MAXPATHLEN, "%s/.local/share/openxcom/", home);
#endif
}
list.push_back(path);
// Get old-style folder
snprintf(path, MAXPATHLEN, "%s/.openxcom/", home);
list.push_back(path);
// Get working directory
list.push_back("./user/");
#endif
return list;
}
/**
* Finds the Config folder according to the running system.
* @return Config path.
*/
std::string findConfigFolder()
{
#if defined(_WIN32) || defined(__APPLE__)
return "";
#elif defined (__HAIKU__)
return "/boot/home/config/settings/openxcom/";
#else
char const *home = getHome();
char path[MAXPATHLEN];
// Get config folders
if (char const *const xdg_config_home = getenv("XDG_CONFIG_HOME"))
{
snprintf(path, MAXPATHLEN, "%s/openxcom/", xdg_config_home);
return path;
}
else
{
snprintf(path, MAXPATHLEN, "%s/.config/openxcom/", home);
return path;
}
#endif
}
/**
* Takes a path and tries to find it based on the
* system's case-sensitivity.
* @param base Base unaltered path.
* @param path Full path to check for casing.
* @return Correct filename or "" if it doesn't exist.
* @note There's no actual method for figuring out the correct
* filename on case-sensitive systems, this is just a workaround.
*/
std::string caseInsensitive(const std::string &base, const std::string &path)
{
std::string fullPath = base + path, newPath = path;
// Try all various case mutations
// Normal unmangled
if (fileExists(fullPath.c_str()))
{
return fullPath;
}
// UPPERCASE
std::transform(newPath.begin(), newPath.end(), newPath.begin(), toupper);
fullPath = base + newPath;
if (fileExists(fullPath.c_str()))
{
return fullPath;
}
// lowercase
std::transform(newPath.begin(), newPath.end(), newPath.begin(), tolower);
fullPath = base + newPath;
if (fileExists(fullPath.c_str()))
{
return fullPath;
}
// If we got here nothing can help us
return "";
}
/**
* Takes a filename and tries to find it in the game's Data folders,
* accounting for the system's case-sensitivity and path style.
* @param filename Original filename.
* @return Correct filename or "" if it doesn't exist.
*/
std::string getDataFile(const std::string &filename)
{
// Correct folder separator
std::string name = filename;
#ifdef _WIN32
std::replace(name.begin(), name.end(), '/', PATH_SEPARATOR);
#endif
// Check current data path
std::string path = caseInsensitive(Options::getDataFolder(), name);
if (path != "")
{
return path;
}
// Check every other path
for (std::vector<std::string>::iterator i = Options::getDataList()->begin(); i != Options::getDataList()->end(); ++i)
{
std::string path = caseInsensitive(*i, name);
if (path != "")
{
Options::setDataFolder(*i);
return path;
}
}
// Give up
return filename;
}
/**
* Creates a folder at the specified path.
* @note Only creates the last folder on the path.
* @param path Full path.
* @return Folder created or not.
*/
bool createFolder(const std::string &path)
{
#ifdef _WIN32
int result = CreateDirectoryA(path.c_str(), 0);
if (result == 0)
return false;
else
return true;
#else
mode_t process_mask = umask(0);
int result = mkdir(path.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
umask(process_mask);
if (result == 0)
return true;
else
return false;
#endif
}
/**
* Adds an ending slash to a path if necessary.
* @param path Folder path.
* @return Terminated path.
*/
std::string endPath(const std::string &path)
{
if (!path.empty() && path.at(path.size()-1) != PATH_SEPARATOR)
return path + PATH_SEPARATOR;
return path;
}
/**
* Gets the name of all the files
* contained in a certain folder.
* @param path Full path to folder.
* @param ext Extension of files ("" if it doesn't matter).
* @return Ordered list of all the files.
*/
std::vector<std::string> getFolderContents(const std::string &path, const std::string &ext)
{
std::vector<std::string> files;
DIR *dp = opendir(path.c_str());
if (dp == 0)
{
std::string errorMessage("Failed to open directory: " + path);
throw Exception(errorMessage);
}
struct dirent *dirp;
while ((dirp = readdir(dp)) != 0)
{
std::string file = dirp->d_name;
if (file == "." || file == "..")
{
continue;
}
if (!ext.empty())
{
if (file.length() >= ext.length() + 1)
{
std::string end = file.substr(file.length() - ext.length() - 1);
if (end != "." + ext)
{
continue;
}
}
else
{
continue;
}
}
files.push_back(file);
}
closedir(dp);
#ifndef _WIN32
std::sort(files.begin(), files.end());
#endif
return files;
}
/**
* Checks if a certain path exists and is a folder.
* @param path Full path to folder.
* @return Does it exist?
*/
bool folderExists(const std::string &path)
{
#ifdef _WIN32
return (PathIsDirectoryA(path.c_str()) != FALSE);
#else
struct stat info;
return (stat(path.c_str(), &info) == 0 && S_ISDIR(info.st_mode));
#endif
}
/**
* Checks if a certain path exists and is a file.
* @param path Full path to file.
* @return Does it exist?
*/
bool fileExists(const std::string &path)
{
#ifdef _WIN32
return (PathFileExistsA(path.c_str()) != FALSE);
#else
struct stat info;
return (stat(path.c_str(), &info) == 0 && S_ISREG(info.st_mode));
#endif
}
/**
* Removes a file from the specified path.
* @param path Full path to file.
* @return True if the operation succeeded, False otherwise.
*/
bool deleteFile(const std::string &path)
{
#ifdef _WIN32
return (DeleteFileA(path.c_str()) != 0);
#else
return (remove(path.c_str()) == 0);
#endif
}
}
}