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//
// Path_UNIX.cpp
//
// Library: Foundation
// Package: Filesystem
// Module: Path
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Path_UNIX.h"
#include "Poco/Exception.h"
#include "Poco/Environment_UNIX.h"
#include "Poco/Ascii.h"
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#if !defined(POCO_VXWORKS)
#include <pwd.h>
#endif
#include <climits>
#ifndef PATH_MAX
#define PATH_MAX 1024 // fallback
#endif
namespace Poco {
std::string PathImpl::currentImpl()
{
std::string path;
char cwd[PATH_MAX];
if (getcwd(cwd, sizeof(cwd)))
path = cwd;
else
throw SystemException("cannot get current directory");
std::string::size_type n = path.size();
if (n > 0 && path[n - 1] != '/') path.append("/");
return path;
}
std::string PathImpl::homeImpl()
{
#if defined(POCO_VXWORKS)
if (EnvironmentImpl::hasImpl("HOME"))
return EnvironmentImpl::getImpl("HOME");
else
return "/";
#else
std::string path;
struct passwd* pwd = getpwuid(getuid());
if (pwd)
path = pwd->pw_dir;
else
{
pwd = getpwuid(geteuid());
if (pwd)
path = pwd->pw_dir;
else
path = EnvironmentImpl::getImpl("HOME");
}
std::string::size_type n = path.size();
if (n > 0 && path[n - 1] != '/') path.append("/");
return path;
#endif
}
std::string PathImpl::configHomeImpl()
{
#if defined(POCO_VXWORKS)
return PathImpl::homeImpl();
#else
std::string path = PathImpl::homeImpl();
std::string::size_type n = path.size();
if (n > 0 && path[n - 1] == '/')
#if POCO_OS == POCO_OS_MAC_OS_X
path.append("Library/Preferences/");
#else
path.append(".config/");
#endif
return path;
#endif
}
std::string PathImpl::dataHomeImpl()
{
#if defined(POCO_VXWORKS)
return PathImpl::homeImpl();
#else
std::string path = PathImpl::homeImpl();
std::string::size_type n = path.size();
if (n > 0 && path[n - 1] == '/')
#if POCO_OS == POCO_OS_MAC_OS_X
path.append("Library/Application Support/");
#else
path.append(".local/share/");
#endif
return path;
#endif
}
std::string PathImpl::cacheHomeImpl()
{
#if defined(POCO_VXWORKS)
return PathImpl::tempImpl();
#else
std::string path = PathImpl::homeImpl();
std::string::size_type n = path.size();
if (n > 0 && path[n - 1] == '/')
#if POCO_OS == POCO_OS_MAC_OS_X
path.append("Library/Caches/");
#else
path.append(".cache/");
#endif
return path;
#endif
}
std::string PathImpl::tempHomeImpl()
{
#if defined(POCO_VXWORKS)
return PathImpl::tempImpl();
#else
std::string path = PathImpl::homeImpl();
std::string::size_type n = path.size();
if (n > 0 && path[n - 1] == '/')
#if POCO_OS == POCO_OS_MAC_OS_X
path.append("Library/Caches/");
#else
path.append(".local/tmp/");
#endif
return path;
#endif
}
std::string PathImpl::tempImpl()
{
std::string path;
char* tmp = getenv("TMPDIR");
if (tmp)
{
path = tmp;
std::string::size_type n = path.size();
if (n > 0 && path[n - 1] != '/') path.append("/");
}
else
{
path = "/tmp/";
}
return path;
}
std::string PathImpl::configImpl()
{
std::string path;
#if POCO_OS == POCO_OS_MAC_OS_X
path = "/Library/Preferences/";
#else
path = "/etc/";
#endif
return path;
}
std::string PathImpl::nullImpl()
{
#if defined(POCO_VXWORKS)
return "/null";
#else
return "/dev/null";
#endif
}
std::string PathImpl::expandImpl(const std::string& path)
{
std::string result;
std::string::const_iterator it = path.begin();
std::string::const_iterator end = path.end();
if (it != end && *it == '~')
{
++it;
if (it != end && *it == '/')
{
const char* homeEnv = getenv("HOME");
if (homeEnv)
{
result += homeEnv;
std::string::size_type resultSize = result.size();
if (resultSize > 0 && result[resultSize - 1] != '/')
result.append("/");
}
else
{
result += homeImpl();
}
++it;
}
else result += '~';
}
while (it != end)
{
if (*it == '$')
{
std::string var;
++it;
if (it != end && *it == '{')
{
++it;
while (it != end && *it != '}') var += *it++;
if (it != end) ++it;
}
else
{
while (it != end && (Ascii::isAlphaNumeric(*it) || *it == '_')) var += *it++;
}
char* val = getenv(var.c_str());
if (val) result += val;
}
else result += *it++;
}
return result;
}
void PathImpl::listRootsImpl(std::vector<std::string>& roots)
{
roots.clear();
roots.push_back("/");
}
} // namespace Poco
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