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/**
* @file llfile.cpp
* @author Michael Schlachter
* @date 2006-03-23
* @brief Implementation of cross-platform POSIX file buffer and c++
* stream classes.
*
* Copyright (c) 2006-2007, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlife.com/developers/opensource/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlife.com/developers/opensource/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
*/
#include "linden_common.h"
#include "llfile.h"
#include "llstring.h"
#include "llerror.h"
using namespace std;
// static
int LLFile::mkdir(const char* dirname, int perms)
{
#if LL_WINDOWS
// permissions are ignored on Windows
std::string utf8dirname = dirname;
llutf16string utf16dirname = utf8str_to_utf16str(utf8dirname);
return _wmkdir(utf16dirname.c_str());
#else
return ::mkdir(dirname, (mode_t)perms);
#endif
}
// static
int LLFile::rmdir(const char* dirname)
{
#if LL_WINDOWS
// permissions are ignored on Windows
std::string utf8dirname = dirname;
llutf16string utf16dirname = utf8str_to_utf16str(utf8dirname);
return _wrmdir(utf16dirname.c_str());
#else
return ::rmdir(dirname);
#endif
}
// static
LLFILE* LLFile::fopen(const char* filename, const char* mode) /* Flawfinder: ignore */
{
#if LL_WINDOWS
std::string utf8filename = filename;
std::string utf8mode = mode;
llutf16string utf16filename = utf8str_to_utf16str(utf8filename);
llutf16string utf16mode = utf8str_to_utf16str(utf8mode);
return _wfopen(utf16filename.c_str(),utf16mode.c_str());
#else
return ::fopen(filename,mode); /* Flawfinder: ignore */
#endif
}
LLFILE* LLFile::_fsopen(const char* filename, const char* mode, int sharingFlag)
{
#if LL_WINDOWS
std::string utf8filename = filename;
std::string utf8mode = mode;
llutf16string utf16filename = utf8str_to_utf16str(utf8filename);
llutf16string utf16mode = utf8str_to_utf16str(utf8mode);
return _wfsopen(utf16filename.c_str(),utf16mode.c_str(),sharingFlag);
#else
llassert(0);//No corresponding function on non-windows
return NULL;
#endif
}
int LLFile::remove(const char* filename)
{
#if LL_WINDOWS
std::string utf8filename = filename;
llutf16string utf16filename = utf8str_to_utf16str(utf8filename);
return _wremove(utf16filename.c_str());
#else
return ::remove(filename);
#endif
}
int LLFile::rename(const char* filename, const char* newname)
{
#if LL_WINDOWS
std::string utf8filename = filename;
std::string utf8newname = newname;
llutf16string utf16filename = utf8str_to_utf16str(utf8filename);
llutf16string utf16newname = utf8str_to_utf16str(utf8newname);
return _wrename(utf16filename.c_str(),utf16newname.c_str());
#else
return ::rename(filename,newname);
#endif
}
int LLFile::stat(const char* filename, llstat* filestatus)
{
#if LL_WINDOWS
std::string utf8filename = filename;
llutf16string utf16filename = utf8str_to_utf16str(utf8filename);
return _wstat(utf16filename.c_str(),filestatus);
#else
return ::stat(filename,filestatus);
#endif
}
/***************** Modified file stream created to overcome the incorrect behaviour of posix fopen in windows *******************/
#if USE_LLFILESTREAMS
LLFILE * LLFile::_Fiopen(const char *filename, std::ios::openmode mode,int) // protection currently unused
{ // open a file
static const char *mods[] =
{ // fopen mode strings corresponding to valid[i]
"r", "w", "w", "a", "rb", "wb", "wb", "ab",
"r+", "w+", "a+", "r+b", "w+b", "a+b",
0};
static const int valid[] =
{ // valid combinations of open flags
ios_base::in,
ios_base::out,
ios_base::out | ios_base::trunc,
ios_base::out | ios_base::app,
ios_base::in | ios_base::binary,
ios_base::out | ios_base::binary,
ios_base::out | ios_base::trunc | ios_base::binary,
ios_base::out | ios_base::app | ios_base::binary,
ios_base::in | ios_base::out,
ios_base::in | ios_base::out | ios_base::trunc,
ios_base::in | ios_base::out | ios_base::app,
ios_base::in | ios_base::out | ios_base::binary,
ios_base::in | ios_base::out | ios_base::trunc
| ios_base::binary,
ios_base::in | ios_base::out | ios_base::app
| ios_base::binary,
0};
FILE *fp = 0;
int n;
ios_base::openmode atendflag = mode & ios_base::ate;
ios_base::openmode norepflag = mode & ios_base::_Noreplace;
if (mode & ios_base::_Nocreate)
mode |= ios_base::in; // file must exist
mode &= ~(ios_base::ate | ios_base::_Nocreate | ios_base::_Noreplace);
for (n = 0; valid[n] != 0 && valid[n] != mode; ++n)
; // look for a valid mode
if (valid[n] == 0)
return (0); // no valid mode
else if (norepflag && mode & (ios_base::out || ios_base::app)
&& (fp = LLFile::fopen(filename, "r")) != 0) /* Flawfinder: ignore */
{ // file must not exist, close and fail
fclose(fp);
return (0);
}
else if (fp != 0 && fclose(fp) != 0)
return (0); // can't close after test open
// should open with protection here, if other than default
else if ((fp = LLFile::fopen(filename, mods[n])) == 0) /* Flawfinder: ignore */
return (0); // open failed
if (!atendflag || fseek(fp, 0, SEEK_END) == 0)
return (fp); // no need to seek to end, or seek succeeded
fclose(fp); // can't position at end
return (0);
}
/************** input file stream ********************************/
void llifstream::close()
{ // close the C stream
if (_Filebuffer && _Filebuffer->close() == 0)
{
_Myios::setstate(ios_base::failbit); /*Flawfinder: ignore*/
}
}
void llifstream::open(const char* _Filename, /* Flawfinder: ignore */
ios_base::openmode _Mode,
int _Prot)
{ // open a C stream with specified mode
FILE* filep = LLFile::_Fiopen(_Filename,_Mode | ios_base::in, _Prot);
if(filep == NULL)
{
_Myios::setstate(ios_base::failbit); /*Flawfinder: ignore*/
return;
}
llassert(_Filebuffer == NULL);
_Filebuffer = new _Myfb(filep);
_ShouldClose = true;
_Myios::init(_Filebuffer);
}
bool llifstream::is_open() const
{ // test if C stream has been opened
if(_Filebuffer)
return (_Filebuffer->is_open());
return false;
}
llifstream::~llifstream()
{
if (_ShouldClose)
{
close();
}
delete _Filebuffer;
}
llifstream::llifstream(const char *_Filename,
ios_base::openmode _Mode,
int _Prot)
: std::basic_istream< char , std::char_traits< char > >(NULL,true),_Filebuffer(NULL),_ShouldClose(false)
{ // construct with named file and specified mode
open(_Filename, _Mode | ios_base::in, _Prot); /* Flawfinder: ignore */
}
/************** output file stream ********************************/
bool llofstream::is_open() const
{ // test if C stream has been opened
if(_Filebuffer)
return (_Filebuffer->is_open());
return false;
}
void llofstream::open(const char* _Filename, /* Flawfinder: ignore */
ios_base::openmode _Mode,
int _Prot)
{ // open a C stream with specified mode
FILE* filep = LLFile::_Fiopen(_Filename,_Mode | ios_base::out, _Prot);
if(filep == NULL)
{
_Myios::setstate(ios_base::failbit); /*Flawfinder: ignore*/
return;
}
llassert(_Filebuffer==NULL);
_Filebuffer = new _Myfb(filep);
_Myios::init(_Filebuffer);
}
void llofstream::close()
{ // close the C stream
llassert(_Filebuffer);
if (_Filebuffer->close() == 0)
_Myios::setstate(ios_base::failbit); /*Flawfinder: ignore*/
}
llofstream::llofstream(const char *_Filename,
std::ios_base::openmode _Mode,
int _Prot)
: std::basic_ostream<char,std::char_traits < char > >(NULL,true),_Filebuffer(NULL)
{ // construct with named file and specified mode
open(_Filename, _Mode , _Prot); /* Flawfinder: ignore */
}
llofstream::~llofstream()
{ // destroy the object
delete _Filebuffer;
}
#endif // #if USE_LLFILESTREAMS
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