i2pd/libi2pd/FS.cpp
2018-01-13 22:51:02 +08:00

207 lines
5.5 KiB
C++

/*
* Copyright (c) 2013-2016, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
* See full license text in LICENSE file at top of project tree
*/
#include <algorithm>
#include <boost/filesystem.hpp>
#ifdef _WIN32
#include <shlobj.h>
#endif
#include "Base.h"
#include "FS.h"
#include "Log.h"
#include "Garlic.h"
namespace i2p {
namespace fs {
std::string appName = "i2pd";
std::string dataDir = "";
#ifdef _WIN32
std::string dirSep = "\\";
#else
std::string dirSep = "/";
#endif
const std::string & GetAppName () {
return appName;
}
void SetAppName (const std::string& name) {
appName = name;
}
const std::string & GetDataDir () {
return dataDir;
}
void DetectDataDir(const std::string & cmdline_param, bool isService) {
if (cmdline_param != "") {
dataDir = cmdline_param;
return;
}
#if defined(WIN32) || defined(_WIN32)
char localAppData[MAX_PATH];
// check executable directory first
GetModuleFileName (NULL, localAppData, MAX_PATH);
auto execPath = boost::filesystem::path(localAppData).parent_path();
// if config file exists in .exe's folder use it
if(boost::filesystem::exists(execPath/"i2pd.conf")) // TODO: magic string
dataDir = execPath.string ();
else
{
// otherwise %appdata%
SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, 0, localAppData);
dataDir = std::string(localAppData) + "\\" + appName;
}
return;
#elif defined(MAC_OSX)
char *home = getenv("HOME");
dataDir = (home != NULL && strlen(home) > 0) ? home : "";
dataDir += "/Library/Application Support/" + appName;
return;
#else /* other unix */
#if defined(ANDROID)
const char * ext = getenv("EXTERNAL_STORAGE");
if (!ext) ext = "/sdcard";
if (boost::filesystem::exists(ext))
{
dataDir = std::string (ext) + "/" + appName;
return;
}
// otherwise use /data/files
#endif
char *home = getenv("HOME");
if (isService) {
dataDir = "/var/lib/" + appName;
} else if (home != NULL && strlen(home) > 0) {
dataDir = std::string(home) + "/." + appName;
} else {
dataDir = "/tmp/" + appName;
}
return;
#endif
}
bool Init() {
if (!boost::filesystem::exists(dataDir))
boost::filesystem::create_directory(dataDir);
std::string destinations = DataDirPath("destinations");
if (!boost::filesystem::exists(destinations))
boost::filesystem::create_directory(destinations);
std::string tags = DataDirPath("tags");
if (!boost::filesystem::exists(tags))
boost::filesystem::create_directory(tags);
else
i2p::garlic::CleanUpTagsFiles ();
return true;
}
bool ReadDir(const std::string & path, std::vector<std::string> & files) {
if (!boost::filesystem::exists(path))
return false;
boost::filesystem::directory_iterator it(path);
boost::filesystem::directory_iterator end;
for ( ; it != end; it++) {
if (!boost::filesystem::is_regular_file(it->status()))
continue;
files.push_back(it->path().string());
}
return true;
}
bool Exists(const std::string & path) {
return boost::filesystem::exists(path);
}
uint32_t GetLastUpdateTime (const std::string & path)
{
if (!boost::filesystem::exists(path)) return 0;
boost::system::error_code ec;
auto t = boost::filesystem::last_write_time (path, ec);
return ec ? 0 : t;
}
bool Remove(const std::string & path) {
if (!boost::filesystem::exists(path))
return false;
return boost::filesystem::remove(path);
}
bool CreateDirectory (const std::string& path)
{
if (boost::filesystem::exists(path) &&
boost::filesystem::is_directory (boost::filesystem::status (path))) return true;
return boost::filesystem::create_directory(path);
}
void HashedStorage::SetPlace(const std::string &path) {
root = path + i2p::fs::dirSep + name;
}
bool HashedStorage::Init(const char * chars, size_t count) {
if (!boost::filesystem::exists(root)) {
boost::filesystem::create_directories(root);
}
for (size_t i = 0; i < count; i++) {
auto p = root + i2p::fs::dirSep + prefix1 + chars[i];
if (boost::filesystem::exists(p))
continue;
if (boost::filesystem::create_directory(p))
continue; /* ^ throws exception on failure */
return false;
}
return true;
}
std::string HashedStorage::Path(const std::string & ident) const {
std::string safe_ident = ident;
std::replace(safe_ident.begin(), safe_ident.end(), '/', '-');
std::replace(safe_ident.begin(), safe_ident.end(), '\\', '-');
std::stringstream t("");
t << this->root << i2p::fs::dirSep;
t << prefix1 << safe_ident[0] << i2p::fs::dirSep;
t << prefix2 << safe_ident << "." << suffix;
return t.str();
}
void HashedStorage::Remove(const std::string & ident) {
std::string path = Path(ident);
if (!boost::filesystem::exists(path))
return;
boost::filesystem::remove(path);
}
void HashedStorage::Traverse(std::vector<std::string> & files) {
Iterate([&files] (const std::string & fname) {
files.push_back(fname);
});
}
void HashedStorage::Iterate(FilenameVisitor v)
{
boost::filesystem::path p(root);
boost::filesystem::recursive_directory_iterator it(p);
boost::filesystem::recursive_directory_iterator end;
for ( ; it != end; it++) {
if (!boost::filesystem::is_regular_file( it->status() ))
continue;
const std::string & t = it->path().string();
v(t);
}
}
} // fs
} // i2p