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