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filesystem.cpp
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Tue, May 21, 00:42
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6 KB
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Thu, May 23, 00:42 (2 d)
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blob
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17783781
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rSPECMICP SpecMiCP / ReactMiCP
filesystem.cpp
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/* =============================================================================
Copyright (c) 2014 - 2016
F. Georget <fabieng@princeton.edu> Princeton University
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
============================================================================= */
#include "filesystem.hpp"
#include <string.h>
#include <dirent.h>
#include <unistd.h>
#include <sys/stat.h>
#include <stdexcept>
#include <limits.h>
#include <stdlib.h>
#include "specmicp_common/config.h"
#include "log.hpp"
static
std
::
string
test_name
;
namespace
specmicp
{
namespace
utils
{
bool
is_directory
(
const
std
::
string
&
path
)
{
struct
stat
info
;
if
(
stat
(
path
.
c_str
(),
&
info
)
==
-
1
)
{
return
false
;
}
if
(
S_ISDIR
(
info
.
st_mode
))
{
return
true
;
}
return
false
;
}
bool
is_file
(
const
std
::
string
&
path
)
{
struct
stat
info
;
if
(
stat
(
path
.
c_str
(),
&
info
)
==
-
1
)
{
return
false
;
}
if
(
S_ISREG
(
info
.
st_mode
))
{
return
true
;
}
return
false
;
}
std
::
string
get_current_directory
()
{
char
buf
[
PATH_MAX
];
char
*
test
=
getcwd
(
buf
,
PATH_MAX
);
if
(
test
==
NULL
)
{
ERROR
<<
"Unable to obtain current working directory"
;
throw
std
::
runtime_error
(
"Something is wrong,"
"unable to obtain the current directory."
);
}
return
std
::
string
(
buf
);
}
std
::
string
complete_path
(
const
std
::
string
&
dir
,
const
std
::
string
&
file
)
{
std
::
string
complete
=
dir
;
if
(
dir
.
back
()
!=
'/'
)
{
complete
+=
'/'
;
}
complete
+=
file
;
return
complete
;
}
std
::
string
relative_to_absolute
(
const
std
::
string
&
rel_path
,
std
::
string
&
error
)
{
std
::
string
abs_path
=
""
;
char
buf
[
PATH_MAX
];
// call posix function
char
*
res
=
realpath
(
rel_path
.
c_str
(),
buf
);
if
(
res
==
NULL
)
{
// parse error
if
(
errno
==
ENOENT
)
{
error
=
"No such file '"
+
rel_path
+
"'."
;
}
else
if
(
errno
==
EACCES
)
{
error
=
"Read permission denied while searching for '"
+
rel_path
+
"'."
;
}
else
if
(
errno
==
EIO
)
{
error
=
"I/O error while searching for '"
+
rel_path
+
"'."
;
}
else
{
error
=
"Error while accessing '"
+
rel_path
+
"'."
;
}
}
else
{
// no error, copy buffer
abs_path
=
buf
;
}
return
abs_path
;
}
int
name_filter
(
const
struct
dirent64
*
entry
)
{
auto
res
=
strncmp
(
entry
->
d_name
,
test_name
.
c_str
(),
256
);
if
(
res
==
0
)
{
return
1
;
}
return
0
;
}
std
::
string
find_path
(
std
::
string
filename
,
const
std
::
vector
<
std
::
string
>
&
directories
)
{
// check if filename is a path
const
auto
has_sep
=
filename
.
find
(
'/'
);
if
(
has_sep
!=
std
::
string
::
npos
)
{
// already a path => we convert it to absolute
std
::
string
error
=
""
;
auto
filepath
=
relative_to_absolute
(
filename
,
error
);
if
(
filepath
==
""
)
{
ERROR
<<
error
;
return
""
;
// empty string is signal for error
}
return
filepath
;
}
// if not a path we try to find it
std
::
string
complete_path_str
=
""
;
test_name
=
filename
.
c_str
();
for
(
auto
dir:
directories
)
{
bool
found
=
false
;
struct
dirent64
**
entry_list
;
auto
count
=
scandir64
(
dir
.
c_str
(),
&
entry_list
,
name_filter
,
alphasort64
);
if
(
count
<
0
)
{
ERROR
<<
"Problem while scanning directory : "
<<
dir
<<
"."
;
throw
std
::
runtime_error
(
"Problem while scanning directory "
+
dir
+
"."
);
}
if
(
count
==
0
)
{
continue
;
}
if
(
count
>
1
)
{
WARNING
<<
"More that one match for file '"
<<
filename
<<
"in : "
<<
dir
<<
"."
;
}
for
(
auto
ind
=
0
;
ind
<
count
;
++
ind
)
{
struct
dirent64
*
entry
;
entry
=
entry_list
[
0
];
if
(
not
found
)
{
complete_path_str
=
complete_path
(
dir
,
entry
->
d_name
);
}
free
(
entry
);
// need to free everything
}
free
(
entry_list
);
if
(
found
)
break
;
}
return
complete_path_str
;
}
bool
has_env
(
const
std
::
string
&
env_var
)
{
#ifdef SPECMICP_HAVE_SECURE_GETENV
char
*
env
=
secure_getenv
(
env_var
.
c_str
());
#else
char
*
env
=
getenv
(
env_var
.
c_str
());
#endif
if
(
env
==
NULL
)
{
return
false
;
}
return
true
;
}
std
::
string
get_env
(
const
std
::
string
&
env_var
)
{
#ifdef SPECMICP_HAVE_SECURE_GETENV
char
*
env
=
secure_getenv
(
env_var
.
c_str
());
#else
char
*
env
=
getenv
(
env_var
.
c_str
());
#endif
if
(
env
==
NULL
)
{
return
""
;
}
else
return
env
;
}
}
// end namespace utils
}
// end namespace specmicp
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