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Created
Fri, Sep 27, 03:19
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6 KB
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text/x-c++
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Sun, Sep 29, 03:19 (2 d)
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rTAMAAS tamaas
gzfstream.hh
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/**
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2016 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Tamaas is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Tamaas is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Tamaas. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __GZFSTREAM_HH__
#define __GZFSTREAM_HH__
/* -------------------------------------------------------------------------- */
#include <string>
#include <sstream>
#include <zlib.h>
/* -------------------------------------------------------------------------- */
__BEGIN_TAMAAS__
class
GZfstream
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
inline
GZfstream
();
inline
virtual
~
GZfstream
();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
inline
void
open
(
const
std
::
string
&
filename
,
std
::
ios_base
::
openmode
mode
);
inline
void
flush
();
inline
void
precision
(
int
i
);
inline
void
getline
(
std
::
string
&
str
);
template
<
typename
T
>
inline
GZfstream
&
operator
<<
(
const
T
&
value
);
template
<
typename
T
>
inline
GZfstream
&
operator
>>
(
T
&
value
);
inline
GZfstream
&
operator
<<
(
std
::
ostream
&
(
*
op
)(
std
::
ostream
&
));
bool
&
getFlagBinary
(){
return
flag_binary
;};
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private
:
bool
flag_binary
;
gzFile
gzfile
;
std
::
stringstream
buffer
;
bool
opened
;
};
/* -------------------------------------------------------------------------- */
inline
GZfstream
::
GZfstream
(){
opened
=
false
;
flag_binary
=
false
;
}
/* -------------------------------------------------------------------------- */
inline
void
GZfstream
::
flush
(){
gzwrite
(
gzfile
,
buffer
.
str
().
c_str
(),
buffer
.
str
().
length
());
// cout << "flushing " << buffer.str() << endl;
buffer
.
str
(
""
);
}
/* -------------------------------------------------------------------------- */
inline
GZfstream
::~
GZfstream
(){
if
(
opened
){
flush
();
gzclose
(
gzfile
);
}
}
/* -------------------------------------------------------------------------- */
inline
void
GZfstream
::
precision
(
int
p
){
buffer
.
precision
(
p
);
}
/* -------------------------------------------------------------------------- */
inline
void
GZfstream
::
open
(
const
std
::
string
&
filename
,
std
::
ios_base
::
openmode
mode
){
std
::
string
_mode
=
""
;
if
(
mode
&
std
::
ios
::
app
)
_mode
+=
"a+"
;
if
(
mode
&
std
::
ios
::
ate
)
_mode
+=
"a+"
;
if
(
mode
&
std
::
ios
::
in
)
_mode
+=
"r"
;
if
(
mode
&
std
::
ios
::
out
)
_mode
+=
"w+"
;
if
(
mode
&
std
::
ios
::
trunc
)
_mode
+=
"w"
;
// string fn = filename + ".gz";
std
::
string
fn
=
filename
;
std
::
cout
<<
"opening "
<<
fn
<<
std
::
endl
;
gzfile
=
NULL
;
gzfile
=
gzopen
(
fn
.
c_str
(),
_mode
.
c_str
());
if
(
gzfile
)
opened
=
true
;
}
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
inline
GZfstream
&
GZfstream
::
operator
<<
(
const
T
&
value
){
buffer
<<
value
;
if
(
buffer
.
str
().
length
()
>
1024
)
flush
();
return
(
*
this
);
}
/* -------------------------------------------------------------------------- */
template
<>
inline
GZfstream
&
GZfstream
::
operator
<<
(
const
Real
&
value
){
if
(
flag_binary
){
gzwrite
(
gzfile
,
&
value
,
sizeof
(
Real
));
}
else
{
buffer
<<
value
;
if
(
buffer
.
str
().
length
()
>
1024
)
flush
();
}
return
(
*
this
);
}
/* -------------------------------------------------------------------------- */
template
<
typename
T
>
inline
GZfstream
&
GZfstream
::
operator
>>
(
T
&
value
){
std
::
cout
<<
"not working"
<<
std
::
endl
;
exit
(
EXIT_FAILURE
);
return
(
*
this
);
}
/* -------------------------------------------------------------------------- */
template
<>
inline
GZfstream
&
GZfstream
::
operator
>>
(
Real
&
value
){
if
(
flag_binary
){
int
ret
=
gzread
(
gzfile
,
&
value
,
sizeof
(
Real
));
if
(
ret
==
0
){
std
::
cout
<<
"end of file"
<<
std
::
endl
;
exit
(
EXIT_FAILURE
);
}
if
(
ret
==
-
1
){
std
::
cout
<<
"error"
<<
std
::
endl
;
exit
(
EXIT_FAILURE
);
}
}
return
(
*
this
);
}
/* -------------------------------------------------------------------------- */
inline
GZfstream
&
GZfstream
::
operator
<<
(
std
::
ostream
&
(
*
op
)(
std
::
ostream
&
)){
(
*
op
)(
buffer
);
flush
();
return
(
*
this
);
}
/* -------------------------------------------------------------------------- */
inline
void
GZfstream
::
getline
(
std
::
string
&
str
){
if
(
!
opened
)
{
std
::
cout
<<
"file not opened"
<<
std
::
endl
;
exit
(
EXIT_FAILURE
);
}
int
len
=
512
;
char
buf
[
len
];
char
*
read
=
gzgets
(
gzfile
,
buf
,
len
);
if
(
read
){
str
=
buf
;
}
else
{
std
::
cout
<<
"could not read the content"
<<
std
::
endl
;
exit
(
EXIT_FAILURE
);
}
}
/* -------------------------------------------------------------------------- */
void
getline
(
GZfstream
&
file
,
std
::
string
&
str
){
file
.
getline
(
str
);
}
/* -------------------------------------------------------------------------- */
__END_TAMAAS__
#endif
/* __GZFSTREAM_HH__ */
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