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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "recently_used_file.hxx"
#include <rtl/ustring.hxx>
#include <osl/process.h>
#include <osl/security.hxx>
#include <osl/thread.h>
#include <osl/file.hxx>
#include <sys/file.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
const rtl::OUString RECENTLY_USED_FILE_NAME(".recently-used");
const rtl::OUString SLASH("/");
namespace /* private */ {
inline void ensure_final_slash(/*inout*/ rtl::OUString& path)
{
if (!path.isEmpty() &&
(SLASH.pData->buffer[0] != path.pData->buffer[path.getLength() - 1]))
path += SLASH;
}
} // namespace private
//------------------------------------------------
recently_used_file::recently_used_file() :
file_(NULL)
{
osl::Security sec;
rtl::OUString homedir_url;
if (sec.getHomeDir(homedir_url))
{
rtl::OUString homedir;
osl::FileBase::getSystemPathFromFileURL(homedir_url, homedir);
rtl::OUString rufn = homedir;
ensure_final_slash(rufn);
rufn += RECENTLY_USED_FILE_NAME;
rtl::OString tmp =
rtl::OUStringToOString(rufn, osl_getThreadTextEncoding());
file_ = fopen(tmp.getStr(), "r+");
/* create if not exist */
if (NULL == file_) {
mode_t umask_ = umask(S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
file_ = fopen(tmp.getStr(), "w+");
umask(umask_);
}
if (NULL == file_)
throw "I/O error opening ~/.recently-used";
if (lockf(fileno(file_), F_LOCK, 0) != 0)
{
fclose(file_);
throw "Cannot lock ~/.recently-used";
}
}
else
throw "Cannot determine user home directory";
}
//------------------------------------------------
recently_used_file::~recently_used_file()
{
int ret = lockf(fileno(file_), F_ULOCK, 0);
SAL_WARN_IF(ret != 0, "shell", "cannot unlock recently unused file");
fclose(file_);
}
//------------------------------------------------
void recently_used_file::reset() const
{
rewind(file_);
}
//------------------------------------------------
void recently_used_file::truncate(off_t length)
{
if (ftruncate(fileno(file_), length) == -1)
throw "I/O error: ftruncate failed";
}
//------------------------------------------------
size_t recently_used_file::read(char* buffer, size_t size) const
{
size_t r = fread(reinterpret_cast<void*>(buffer), sizeof(char), size, file_);
if ((r < size) && ferror(file_))
throw "I/O error: read failed";
return r;
}
//----------------------------
void recently_used_file::write(const char* buffer, size_t size) const
{
if (size != fwrite(reinterpret_cast<const void*>(buffer), sizeof(char), size, file_))
throw "I/O error: write failed";
}
//----------------------------
bool recently_used_file::eof() const
{
return feof(file_);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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