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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 "file_path_helper.hxx"
#include "uunxapi.hxx"
#include <boost/noncopyable.hpp>
#include <osl/diagnose.h>
#include <rtl/ustring.hxx>
#include <sal/log.hxx>
const sal_Unicode FPH_CHAR_PATH_SEPARATOR = (sal_Unicode)'/';
const sal_Unicode FPH_CHAR_DOT = (sal_Unicode)'.';
const sal_Unicode FPH_CHAR_COLON = (sal_Unicode)':';
inline const rtl::OUString FPH_PATH_SEPARATOR()
{ return rtl::OUString(FPH_CHAR_PATH_SEPARATOR); }
inline const rtl::OUString FPH_LOCAL_DIR_ENTRY()
{ return rtl::OUString(FPH_CHAR_DOT); }
inline const rtl::OUString FPH_PARENT_DIR_ENTRY()
{ return rtl::OUString(".."); }
void SAL_CALL osl_systemPathRemoveSeparator(rtl_uString* pustrPath)
{
OSL_PRECOND(0 != pustrPath, "osl_systemPathRemoveSeparator: Invalid parameter");
if (0 != pustrPath)
{
// maybe there are more than one separator at end
// so we run in a loop
while ((pustrPath->length > 1) && (FPH_CHAR_PATH_SEPARATOR == pustrPath->buffer[pustrPath->length - 1]))
{
pustrPath->length--;
pustrPath->buffer[pustrPath->length] = (sal_Unicode)'\0';
}
SAL_WARN_IF( !((0 == pustrPath->length) || (1 == pustrPath->length) ||
(pustrPath->length > 1 && pustrPath->buffer[pustrPath->length - 1] != FPH_CHAR_PATH_SEPARATOR)),
"sal.osl",
"osl_systemPathRemoveSeparator: Post condition failed");
}
}
void SAL_CALL osl_systemPathEnsureSeparator(rtl_uString** ppustrPath)
{
OSL_PRECOND((0 != ppustrPath) && (0 != *ppustrPath), "osl_systemPathEnsureSeparator: Invalid parameter");
if ((0 != ppustrPath) && (0 != *ppustrPath))
{
rtl::OUString path(*ppustrPath);
sal_Int32 lp = path.getLength();
sal_Int32 i = path.lastIndexOf(FPH_CHAR_PATH_SEPARATOR);
if ((lp > 1 && i != (lp - 1)) || ((lp < 2) && i < 0))
{
path += FPH_PATH_SEPARATOR();
rtl_uString_assign(ppustrPath, path.pData);
}
SAL_WARN_IF( !path.endsWith(FPH_PATH_SEPARATOR()),
"sal.osl",
"osl_systemPathEnsureSeparator: Post condition failed");
}
}
bool SAL_CALL osl_systemPathIsRelativePath(const rtl_uString* pustrPath)
{
OSL_PRECOND(0 != pustrPath, "osl_systemPathIsRelativePath: Invalid parameter");
return ((0 == pustrPath) || (0 == pustrPath->length) || (pustrPath->buffer[0] != FPH_CHAR_PATH_SEPARATOR));
}
void SAL_CALL osl_systemPathMakeAbsolutePath(
const rtl_uString* pustrBasePath,
const rtl_uString* pustrRelPath,
rtl_uString** ppustrAbsolutePath)
{
rtl::OUString base(rtl_uString_getStr(const_cast<rtl_uString*>(pustrBasePath)));
rtl::OUString rel(const_cast<rtl_uString*>(pustrRelPath));
if (!base.isEmpty())
osl_systemPathEnsureSeparator(&base.pData);
base += rel;
rtl_uString_acquire(base.pData);
*ppustrAbsolutePath = base.pData;
}
void SAL_CALL osl_systemPathGetFileNameOrLastDirectoryPart(
const rtl_uString* pustrPath,
rtl_uString** ppustrFileNameOrLastDirPart)
{
OSL_PRECOND(pustrPath && ppustrFileNameOrLastDirPart, \
"osl_systemPathGetFileNameOrLastDirectoryPart: Invalid parameter");
rtl::OUString path(const_cast<rtl_uString*>(pustrPath));
osl_systemPathRemoveSeparator(path.pData);
rtl::OUString last_part;
if (path.getLength() > 1 || (1 == path.getLength() && *path.getStr() != FPH_CHAR_PATH_SEPARATOR))
{
sal_Int32 idx_ps = path.lastIndexOf(FPH_CHAR_PATH_SEPARATOR);
idx_ps++; // always right to increment by one even if idx_ps == -1!
last_part = rtl::OUString(path.getStr() + idx_ps);
}
rtl_uString_assign(ppustrFileNameOrLastDirPart, last_part.pData);
}
bool SAL_CALL osl_systemPathIsHiddenFileOrDirectoryEntry(
const rtl_uString* pustrPath)
{
OSL_PRECOND(0 != pustrPath, "osl_systemPathIsHiddenFileOrDirectoryEntry: Invalid parameter");
if ((0 == pustrPath) || (0 == pustrPath->length))
return false;
rtl::OUString fdp;
osl_systemPathGetFileNameOrLastDirectoryPart(pustrPath, &fdp.pData);
return ((fdp.pData->length > 0) &&
(fdp.pData->buffer[0] == FPH_CHAR_DOT) &&
!osl_systemPathIsLocalOrParentDirectoryEntry(fdp.pData));
}
bool SAL_CALL osl_systemPathIsLocalOrParentDirectoryEntry(
const rtl_uString* pustrPath)
{
OSL_PRECOND(pustrPath, "osl_systemPathIsLocalOrParentDirectoryEntry: Invalid parameter");
rtl::OUString dirent;
osl_systemPathGetFileNameOrLastDirectoryPart(pustrPath, &dirent.pData);
return (dirent == FPH_LOCAL_DIR_ENTRY() ||
dirent == FPH_PARENT_DIR_ENTRY());
}
/***********************************************
Simple iterator for a path list separated by
the specified character
**********************************************/
class path_list_iterator: private boost::noncopyable
{
public:
/* after construction get_current_item
returns the first path in list, no need
to call reset first
*/
path_list_iterator(const rtl::OUString& path_list, sal_Unicode list_separator = FPH_CHAR_COLON) :
m_path_list(path_list),
m_end(m_path_list.getStr() + m_path_list.getLength() + 1),
m_separator(list_separator)
{
reset();
}
void reset()
{
m_path_segment_begin = m_path_segment_end = m_path_list.getStr();
advance();
}
void next()
{
OSL_PRECOND(!done(), "path_list_iterator: Already done!");
m_path_segment_begin = ++m_path_segment_end;
advance();
}
bool done() const
{
return (m_path_segment_end >= m_end);
}
rtl::OUString get_current_item() const
{
return rtl::OUString(
m_path_segment_begin,
(m_path_segment_end - m_path_segment_begin));
}
private:
/* move m_path_end to the next separator or
to the end of the string
*/
void advance()
{
while (!done() && *m_path_segment_end && (*m_path_segment_end != m_separator))
++m_path_segment_end;
OSL_ASSERT(m_path_segment_end <= m_end);
}
private:
rtl::OUString m_path_list;
const sal_Unicode* m_end;
const sal_Unicode m_separator;
const sal_Unicode* m_path_segment_begin;
const sal_Unicode* m_path_segment_end;
};
bool SAL_CALL osl_searchPath(
const rtl_uString* pustrFilePath,
const rtl_uString* pustrSearchPathList,
rtl_uString** ppustrPathFound)
{
OSL_PRECOND(pustrFilePath && pustrSearchPathList && ppustrPathFound, "osl_searchPath: Invalid parameter");
bool bfound = false;
rtl::OUString fp(const_cast<rtl_uString*>(pustrFilePath));
rtl::OUString pl = rtl::OUString(const_cast<rtl_uString*>(pustrSearchPathList));
path_list_iterator pli(pl);
while (!pli.done())
{
rtl::OUString p = pli.get_current_item();
osl::systemPathEnsureSeparator(p);
p += fp;
if (osl::access(p, F_OK) > -1)
{
bfound = true;
rtl_uString_assign(ppustrPathFound, p.pData);
break;
}
pli.next();
}
return bfound;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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