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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 <sal/log.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 <fcntl.h>
#include <unistd.h>
const char SLASH[] = "/";
namespace {
inline void ensure_final_slash(/*inout*/ OUString& path)
{
if (!path.isEmpty() &&
(SLASH[0] != path.pData->buffer[path.getLength() - 1]))
path += SLASH;
}
} // namespace private
recently_used_file::recently_used_file() :
file_(nullptr)
{
osl::Security sec;
OUString homedir_url;
if (!sec.getHomeDir(homedir_url))
throw "Cannot determine user home directory";
OUString homedir;
osl::FileBase::getSystemPathFromFileURL(homedir_url, homedir);
OUString rufn = homedir;
ensure_final_slash(rufn);
rufn += ".recently-used";
OString tmp =
OUStringToOString(rufn, osl_getThreadTextEncoding());
int fd = open(tmp.getStr(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
if (fd != -1) {
file_ = fdopen(fd, "w+");
if (file_ == nullptr) {
close(fd);
}
}
if (nullptr == file_)
throw "I/O error opening ~/.recently-used";
if (lockf(fileno(file_), F_LOCK, 0) != 0)
{
fclose(file_);
throw "Cannot lock ~/.recently-used";
}
}
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()
{
if (ftruncate(fileno(file_), 0) == -1)
throw "I/O error: ftruncate failed";
}
size_t recently_used_file::read(char* buffer, size_t size) const
{
size_t r = fread(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(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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