filesys.h

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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
 
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
 
#pragma once
 
#include <set>
#include <string>
#include <vector>
#include "exceptions.h"
 
#ifdef _WIN32 // WINDOWS
#define DIR_DELIM "\\"
#define DIR_DELIM_CHAR '\\'
#define FILESYS_CASE_INSENSITIVE true
#define PATH_DELIM ";"
#else // POSIX
#define DIR_DELIM "/"
#define DIR_DELIM_CHAR '/'
#define FILESYS_CASE_INSENSITIVE false
#define PATH_DELIM ":"
#endif
 
namespace fs
{
 
struct DirListNode
{
    std::string name;
    bool dir;
};
 
std::vector<DirListNode> GetDirListing(const std::string &path);
 
// Returns true if already exists
bool CreateDir(const std::string &path);
 
bool PathExists(const std::string &path);
 
bool IsPathAbsolute(const std::string &path);
 
bool IsDir(const std::string &path);
 
bool IsDirDelimiter(char c);
 
// Only pass full paths to this one. True on success.
// NOTE: The WIN32 version returns always true.
bool RecursiveDelete(const std::string &path);
 
bool DeleteSingleFileOrEmptyDirectory(const std::string &path);
 
// Returns path to temp directory, can return "" on error
std::string TempPath();
 
/* Returns a list of subdirectories, including the path itself, but excluding
       hidden directories (whose names start with . or _)
*/
void GetRecursiveDirs(std::vector<std::string> &dirs, const std::string &dir);
std::vector<std::string> GetRecursiveDirs(const std::string &dir);
 
/* Multiplatform */
 
/* The path itself not included, returns a list of all subpaths.
   dst - vector that contains all the subpaths.
   list files - include files in the list of subpaths.
   ignore - paths that start with these charcters will not be listed.
*/
void GetRecursiveSubPaths(const std::string &path,
          std::vector<std::string> &dst,
          bool list_files,
          const std::set<char> &ignore = {});
 
// Only pass full paths to this one. True on success.
bool RecursiveDeleteContent(const std::string &path);
 
// Create all directories on the given path that don't already exist.
bool CreateAllDirs(const std::string &path);
 
// Copy a regular file
bool CopyFileContents(const std::string &source, const std::string &target);
 
// Copy directory and all subdirectories
// Omits files and subdirectories that start with a period
bool CopyDir(const std::string &source, const std::string &target);
 
// Check if one path is prefix of another
// For example, "/tmp" is a prefix of "/tmp" and "/tmp/file" but not "/tmp2"
// Ignores case differences and '/' vs. '\\' on Windows
bool PathStartsWith(const std::string &path, const std::string &prefix);
 
// Remove last path component and the dir delimiter before and/or after it,
// returns "" if there is only one path component.
// removed: If non-NULL, receives the removed component(s).
// count: Number of components to remove
std::string RemoveLastPathComponent(const std::string &path,
               std::string *removed = NULL, int count = 1);
 
// Remove "." and ".." path components and for every ".." removed, remove
// the last normal path component before it. Unlike AbsolutePath,
// this does not resolve symlinks and check for existence of directories.
std::string RemoveRelativePathComponents(std::string path);
 
// Returns the absolute path for the passed path, with "." and ".." path
// components and symlinks removed.  Returns "" on error.
std::string AbsolutePath(const std::string &path);
 
// Returns the filename from a path or the entire path if no directory
// delimiter is found.
const char *GetFilenameFromPath(const char *path);
 
bool safeWriteToFile(const std::string &path, const std::string &content);
 
bool ReadFile(const std::string &path, std::string &out);
 
bool Rename(const std::string &from, const std::string &to);
 
} // namespace fs