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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2017 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#
include
"
cppcheck.h
"
#
include
"
mathlib.h
"
#
include
"
path.h
"
#
include
<
fstream
>
#
include
<
iostream
>
#
include
<
sstream
>
#
include
<
cstdlib
>
#
include
<
cstring
>
#
include
<
ctime
>
class
ReduceSettings
:
public
Settings
{
public:
ReduceSettings
() : filename(
0
), linenr(
0
), hang(
false
), maxtime(
0
) { }
const
char
*filename;
std::
size_t
linenr;
bool
hang;
unsigned
int
maxtime;
};
class
CppcheckExecutor
:
public
ErrorLogger
{
private:
CppCheck cppcheck;
std::string pattern;
bool
foundLine;
std::
time_t
stopTime;
public:
explicit
CppcheckExecutor
(
const
ReduceSettings & settings)
: ErrorLogger()
, cppcheck(*
this
,
false
)
, foundLine(
false
)
, stopTime(
0
) {
if
(!settings.
hang
)
pattern =
"
:
"
+
MathLib::toString
(settings.
linenr
) +
"
]
"
;
cppcheck.
settings
() = settings;
}
bool
run
(
const
char
filename[],
unsigned
int
maxtime) {
foundLine =
false
;
stopTime =
std::time
(
0
) + maxtime;
cppcheck.
check
(filename);
return
foundLine;
}
void
reportOut
(
const
std::string &
/*
outmsg
*/
) { }
void
reportErr
(
const
ErrorLogger::ErrorMessage &msg) {
if
(!pattern.
empty
() && msg.
toString
(
false
).
find
(pattern) != std::string::npos) {
foundLine =
true
;
cppcheck.
terminate
();
}
}
void
reportProgress
(
const
std::string &
/*
filename
*/
,
const
char
/*
stage
*/
[],
const
std::
size_t
/*
value
*/
) {
if
(
std::time
(
0
) > stopTime) {
if
(pattern.
empty
())
foundLine =
true
;
else
std::cerr <<
"
timeout. You might want to use a longer --maxtime timeout
"
<< std::endl;
std::cout <<
"
terminate
"
<< std::endl;
cppcheck.
terminate
();
}
}
};
static
bool
test
(
const
ReduceSettings &settings,
const
std::vector<std::string> &filedata,
const
std::
size_t
line1,
const
std::
size_t
line2)
{
std::string
path
(settings.
filename
);
if
(path.
find_first_of
(
"
\\
/
"
) != std::string::npos)
path = path.
erase
(
1
+ path.
find_last_of
(
"
\\
/
"
));
else
path.
clear
();
const
std::string
tempfilename
(path +
"
__temp__
"
+
std::strrchr
(settings.
filename
,
'
.
'
));
std::ofstream
fout
(tempfilename.
c_str
());
for
(std::
size_t
i =
0
; i < filedata.
size
(); i++)
fout << ((i>=line1 && i<=line2) ?
"
"
: filedata[i]) << std::endl;
fout.
close
();
CppcheckExecutor
cppcheck
(settings);
return
cppcheck.
run
(tempfilename.
c_str
(), settings.
maxtime
);
}
static
bool
test
(
const
ReduceSettings &settings,
const
std::vector<std::string> &filedata,
const
std::
size_t
line)
{
return
test
(settings, filedata, line, line);
}
#
ifdef
GDB_HELPERS
static
void
printstr
(
const
std::vector<std::string> &filedata,
int
i1,
int
i2)
{
std::cout << filedata.
size
();
for
(
int
i = i1; i < i2; ++i)
std::cout << i <<
"
:
"
<< filedata[i] << std::endl;
}
#
endif
static
char
getEndChar
(
const
std::string &line)
{
std::
size_t
pos = line.
find_last_not_of
(
"
\t
"
);
return
(pos == std::string::npos) ?
'
\0
'
: line[pos];
}
static
std::vector<std::string>
readfile
(
const
std::string &filename)
{
std::vector<std::string> filedata;
std::ifstream
fin
(filename.
c_str
());
std::string line;
bool
blockComment =
false
;
while
(
std::getline
(fin,line)) {
//
replace various space characters with space
for
(std::string::size_type pos =
0
; pos < line.
size
(); ++pos) {
if
(line[pos] &
0x80
||
std::isspace
(line[pos]))
line[pos] =
'
'
;
}
//
remove block comments TODO: Handle /* inside strings
if
(blockComment) {
if
(line.
find
(
"
*/
"
) == std::string::npos)
line.
clear
();
else
{
if
(line.
find
(
"
*/
"
) +
2U
== line.
size
())
line.
clear
();
else
line = line.
substr
(line.
find
(
"
*/
"
) +
2U
);
blockComment =
false
;
}
}
while
(!blockComment && line.
find
(
"
/*
"
) != std::string::npos) {
std::string::size_type pos = line.
find
(
"
/*
"
);
if
(line.
find
(
"
*/
"
,pos) == std::string::npos) {
blockComment =
true
;
if
(pos==
0
)
line.
clear
();
else
line = line.
substr
(
0
,pos);
}
else
{
blockComment =
false
;
line = line.
erase
(pos,
2U
+ line.
find
(
"
*/
"
, pos) - pos);
}
}
//
Remove // comments
if
(line.
find
(
"
//
"
) != std::string::npos)
line = line.
substr
(
0
, line.
find
(
"
//
"
));
//
empty line
if
(line.
find_first_not_of
(
"
"
) == std::string::npos)
line.
clear
();
else
{
const
std::string::size_type pos = line.
find_first_not_of
(
"
"
);
//
remove spaces before leading #
if
(line[pos]==
'
#
'
)
line = line.
substr
(pos);
}
//
remove trailing spaces
while
(!line.
empty
() &&
std::isspace
(line[line.
size
()-
1U
]))
line = line.
substr
(
0
, line.
size
() -
1U
);
filedata.
push_back
(line);
}
//
put function declarations in a single line..
for
(
unsigned
int
linenr =
0U
; linenr+
1U
< filedata.
size
(); ++linenr) {
//
Does this look like start of a function declaration?
if
(filedata[linenr].
empty
() ||
!
std::isalpha
(filedata[linenr][
0U
]) ||
getEndChar
(filedata[linenr]) !=
'
,
'
||
filedata[linenr].
find
(
"
(
"
) == std::string::npos ||
filedata[linenr].
find
(
"
)
"
) != std::string::npos)
continue
;
//
Where does function declaration end?
unsigned
int
linenr2 = linenr +
1U
;
while
(linenr2 < filedata.
size
() &&
getEndChar
(filedata[linenr2]) ==
'
,
'
&&
filedata[linenr2].
find
(
"
(
"
) == std::string::npos &&
filedata[linenr2].
find
(
"
)
"
) == std::string::npos)
++linenr2;
//
If function declaration looks correct.. simplify it
if
(linenr2 < filedata.
size
() &&
getEndChar
(filedata[linenr2]) ==
'
;
'
&&
filedata[linenr2].
find
(
"
(
"
) == std::string::npos &&
filedata[linenr2].
size
() >
2U
&&
filedata[linenr2].
find
(
"
)
"
) == filedata[linenr2].
size
() -
2U
) {
std::string code;
for
(
unsigned
int
i = linenr; i <= linenr2; i++) {
code = code + filedata[i];
filedata[i].
clear
();
}
filedata[linenr] = code;
}
}
//
put #define statements in a single line..
for
(
unsigned
int
linenr =
0U
; linenr+
1U
< filedata.
size
(); ++linenr) {
//
is this a multiline #define statement?
if
(filedata[linenr].
compare
(
0
,
8
,
"
#define
"
)!=
0
||
getEndChar
(filedata[linenr])!=
'
\\
'
)
continue
;
//
where does statement end?
unsigned
int
linenr2 = linenr +
1U
;
while
(linenr2 < filedata.
size
() &&
getEndChar
(filedata[linenr2]) ==
'
\\
'
)
++linenr2;
//
simplify
if
(linenr2 < filedata.
size
()) {
std::string code;
for
(
unsigned
int
i = linenr; i <= linenr2; i++) {
code = code + filedata[i].
substr
(
0
,filedata[i].
size
() -
1U
);
filedata[i].
clear
();
}
filedata[linenr] = code;
}
}
return
filedata;
}
static
bool
removeMacrosInGlobalScope
(
const
ReduceSettings &settings, std::vector<std::string> &filedata)
{
bool
changed =
false
;
//
Remove macros in global scope..
for
(std::
size_t
i =
0
; i < filedata.
size
(); i++) {
const
std::string line = (i==
0U
&&filedata.
empty
()) ?
std::string
(
"
;
"
) : filedata[i];
if
(line.
empty
())
continue
;
const
char
startChar = line[
0
];
const
char
endChar = line[line.
size
() -
1U
];
bool
decl =
bool
(!
std::isspace
(startChar) && (endChar==
'
}
'
|| endChar==
'
;
'
));
while
(decl) {
decl =
false
;
//
might be set to true below
std::
size_t
pos = i +
1U
;
while
(pos < filedata.
size
() && filedata[pos].
empty
())
++pos;
if
(pos >= filedata.
size
())
break
;
const
std::string &s = filedata[pos];
//
possible macro : make sure it matches '[A-Z0-9_]+\(.*\)'
std::string::size_type si =
0
;
while
(si < s.
size
() && ((s[si]>=
'
A
'
&& s[si]<=
'
Z
'
) || (i>
0
&& s[si]>=
'
0
'
&& s[si]<=
'
9
'
) || s[si]==
'
_
'
))
si++;
while
(si < s.
size
() &&
std::isspace
(s[si]))
si++;
if
(si ==
0U
|| si >= s.
size
() || s[si] !=
'
(
'
)
break
;
si++;
unsigned
int
parlevel =
1
;
while
(si < s.
size
() && parlevel >=
1U
) {
if
(s[si] ==
'
(
'
)
++parlevel;
else
if
(s[si] ==
'
)
'
)
--parlevel;
si++;
}
if
(!(parlevel ==
0U
&& si == s.
size
()))
break
;
if
(
test
(settings, filedata, pos)) {
decl =
true
;
filedata[pos].
clear
();
std::cout <<
"
removed declaration at line
"
<< pos << std::endl;
changed =
true
;
}
else
{
std::cout <<
"
kept declaration at line
"
<< pos << std::endl;
}
}
}
return
changed;
}
static
bool
removeBlocksOfCode
(
const
ReduceSettings &settings, std::vector<std::string> &filedata)
{
bool
changed =
false
;
//
Remove blocks of code..
for
(std::
size_t
i =
0
; i < filedata.
size
(); i++) {
const
std::string line = (i==
0U
&&filedata.
empty
()) ?
std::string
(
"
;
"
) : filedata[i];
if
(line.
empty
())
continue
;
const
char
startChar = line[
0
];
const
char
endChar = line[line.
size
() -
1U
];
//
some kind of single line declaration
if
(
std::isalpha
(startChar) && endChar==
'
;
'
) {
if
(
test
(settings, filedata, i)) {
filedata[i].
clear
();
std::cout <<
"
removed declaration at line
"
<< i << std::endl;
changed =
true
;
}
else
{
std::cout <<
"
kept declaration at line
"
<< i << std::endl;
}
}
//
remove a function body below a '}'
bool
decl =
bool
(!
std::isspace
(startChar) && (endChar==
'
}
'
|| endChar==
'
;
'
));
while
(decl) {
decl =
false
;
//
might be set to true below
std::
size_t
pos = ++i;
while
(pos < filedata.
size
() && filedata[pos].
empty
())
++pos;
if
((pos+
2U
< filedata.
size
()) && (
std::isalpha
(filedata[pos].
at
(
0
)))) {
//
does code block start with "{"
std::
size_t
pos2 = pos;
//
struct X { ..
if
(filedata[pos].
find_first_of
(
"
();}
"
) == std::string::npos && filedata[pos].
at
(filedata[pos].
size
()-
1U
) ==
'
{
'
) {
}
//
function declaration ..
else
{
if
(filedata[pos].
find
(
"
(
"
) != std::string::npos && filedata[pos].
find
(
"
)
"
)==std::string::npos) {
++pos2;
while
(pos2+
2U
< filedata.
size
() && !filedata[pos2].
empty
() && filedata[pos2].
find_first_of
(
"
(){}
"
) == std::string::npos)
++pos2;
if
(filedata[pos2].
find_first_of
(
"
({}
"
)!=std::string::npos || filedata[pos2].
find
(
"
)
"
) == std::string::npos)
break
;
}
pos2++;
if
(pos2 < filedata.
size
() && !filedata[pos2].
empty
() && filedata[pos2].
at
(filedata[pos2].
find_first_not_of
(
"
"
)) ==
'
:
'
) {
pos2++;
while
(pos2 < filedata.
size
() && !filedata[pos2].
empty
() && filedata[pos2].
at
(filedata[pos2].
find_first_not_of
(
"
"
)) ==
'
,
'
)
pos2++;
}
if
(pos2+
2U
>= filedata.
size
() || filedata[pos2] !=
"
{
"
)
break
;
}
pos2++;
//
find end of block..
int
level =
0
;
while
((pos2 < filedata.
size
()) && (filedata[pos2].
empty
() ||
std::isspace
(filedata[pos2].
at
(
0
)) || (
std::isalpha
(filedata[pos2].
at
(
0
)) && filedata[pos2].
at
(filedata[pos2].
size
()-
1U
) ==
'
:
'
) || filedata[pos2].
compare
(
0
,
3
,
"
#if
"
)==
0
|| filedata[pos2].
compare
(
0
,
3
,
"
#el
"
)==
0
|| filedata[pos2]==
"
#endif
"
)) {
if
(filedata[pos2].
compare
(
0
,
3
,
"
#if
"
) ==
0
)
++level;
else
if
(filedata[pos2] ==
"
#endif
"
)
--level;
++pos2;
}
if
(level !=
0
)
break
;
//
does block of code end with a '}'
if
((pos2 < filedata.
size
()) && (filedata[pos2] ==
"
}
"
|| filedata[pos2] ==
"
};
"
)) {
if
(
test
(settings, filedata, pos, pos2)) {
for
(i = pos; i <= pos2; i++)
filedata[i].
clear
();
std::cout <<
"
removed block of code at lines
"
<< pos <<
"
-
"
<< pos2 << std::endl;
decl =
true
;
changed =
true
;
}
else
{
std::cout <<
"
kept block of code at lines
"
<< pos <<
"
-
"
<< pos2 << std::endl;
}
}
}
}
}
return
changed;
}
static
bool
removeClassAndStructMembers
(
const
ReduceSettings &settings, std::vector<std::string> &filedata)
{
bool
changed =
false
;
//
remove class and struct members
for
(std::
size_t
i =
0
; i +
2U
< filedata.
size
(); i++) {
if
((filedata[i].
compare
(
0
,
6
,
"
class
"
)==
0
|| filedata[i].
compare
(
0
,
7
,
"
struct
"
)==
0
) && filedata[i].
find
(
"
;
"
)==std::string::npos && filedata[i+
1
]==
"
{
"
) {
bool
decl =
true
;
for
(std::
size_t
pos = i+
2U
; pos < filedata.
size
(); pos++) {
const
std::string line = filedata[pos];
if
(line.
empty
())
continue
;
//
count { and }
unsigned
int
c1=
0
, c2=
0
;
for
(std::string::size_type c =
0
; c < line.
size
(); c++) {
if
(line[c] ==
'
{
'
)
++c1;
else
if
(line[c] ==
'
}
'
)
++c2;
}
if
(c2>
0
&& (c1!=
1
|| c2!=
1
))
break
;
const
char
endChar = line[line.
size
() -
1U
];
if
(decl && (endChar ==
'
;
'
|| (c1==
1
&& c2==
1
&& endChar==
'
}
'
))) {
if
(
test
(settings, filedata, pos)) {
std::cout <<
"
removed struct/class declaration at line
"
<< pos << std::endl;
filedata[pos].
clear
();
changed =
true
;
}
else
{
std::cout <<
"
kept struct/class declaration at line
"
<< pos << std::endl;
}
}
if
(line[
0
] !=
'
#
'
) {
if
(decl &&
std::isalpha
(line[
0
]) && endChar ==
'
:
'
) {
decl =
true
;
for
(std::string::size_type linepos =
0U
; linepos+
1U
< line.
size
(); ++linepos)
decl &= (
std::isspace
(line[linepos]) ||
std::isalpha
(line[linepos]));
}
else
decl =
bool
(endChar ==
'
;
'
|| endChar ==
'
}
'
);
}
}
}
}
return
changed;
}
static
bool
removeIfEndIf
(
const
ReduceSettings &settings, std::vector<std::string> &filedata)
{
bool
changed =
false
;
//
#if - #endif
for
(std::
size_t
i =
0
; i < filedata.
size
(); ++i) {
while
(filedata[i].
compare
(
0
,
3
,
"
#if
"
) ==
0
) {
std::
size_t
pos2 = i +
1
;
while
(pos2 < filedata.
size
() && filedata[pos2].
empty
())
++pos2;
if
(pos2 < filedata.
size
() && filedata[pos2] ==
"
#endif
"
) {
if
(
test
(settings, filedata, i, pos2)) {
std::cout <<
"
Removed #if - #endif block at lines
"
<< i <<
"
-
"
<< pos2 << std::endl;
filedata[i].
clear
();
filedata[pos2].
clear
();
i =
0
;
changed =
true
;
}
else
{
std::cout <<
"
Kept #if - #endif block at lines
"
<< i <<
"
-
"
<< pos2 << std::endl;
break
;
}
}
else
{
break
;
}
}
}
//
#ifndef UNUSED_ID
for
(std::
size_t
i =
0
; i < filedata.
size
(); ++i) {
if
(filedata[i].
compare
(
0
,
8
,
"
#ifndef
"
) ==
0
) {
bool
erase =
true
;
bool
def =
false
;
const
std::string
id
(filedata[i].
substr
(
8
));
for
(std::
size_t
i2 =
0
; i2 < filedata.
size
(); i2++) {
if
(i2 == i)
continue
;
if
(filedata[i2].
find
(id) != std::string::npos) {
if
(!def && filedata[i2].
compare
(
0
,
8
,
"
#define
"
)==
0
)
def =
true
;
else
erase =
false
;
}
}
if
(erase) {
unsigned
int
level =
0
;
for
(std::
size_t
i2 = i +
1U
; i2 < filedata.
size
(); i2++) {
if
(filedata[i2].
compare
(
0
,
3
,
"
#if
"
)==
0
)
++level;
else
if
(filedata[i2] ==
"
#else
"
)
break
;
else
if
(filedata[i2] ==
"
#endif
"
) {
if
(level >
0
)
--level;
else
{
std::vector<std::string>
filedata2
(filedata);
filedata2[i].
clear
();
filedata2[i2].
clear
();
if
(
test
(settings, filedata2, i)) {
std::cout <<
"
Removed #ifndef at line
"
<< i << std::endl;
filedata.
swap
(filedata2);
changed =
true
;
}
else
{
std::cout <<
"
Kept #ifndef at line
"
<< i << std::endl;
break
;
}
break
;
}
}
}
}
}
}
return
changed;
}
static
bool
removeUnusedDefines
(
const
ReduceSettings &settings, std::vector<std::string> &filedata)
{
bool
changed =
false
;
for
(std::
size_t
i =
0
; i < filedata.
size
(); ++i) {
if
(filedata[i].
compare
(
0
,
8
,
"
#define
"
)==
0
&& filedata[i].
find
(
"
\\
"
)==std::string::npos) {
//
Try to remove macro..
if
(
test
(settings, filedata, i)) {
std::cout <<
"
Removed #define at line
"
<< i << std::endl;
filedata[i].
clear
();
changed =
true
;
}
else
{
std::cout <<
"
Kept #define at line
"
<< i << std::endl;
}
}
}
return
changed;
}
static
bool
removeSingleLines
(
const
ReduceSettings &settings, std::vector<std::string> &filedata)
{
bool
changed =
false
;
bool
decl =
true
;
for
(std::
size_t
i =
0
; i < filedata.
size
(); ++i) {
const
std::string line = filedata[i];
if
(line.
empty
())
continue
;
const
char
endChar = line[line.
size
() -
1U
];
if
(decl && endChar ==
'
;
'
) {
if
(
test
(settings, filedata, i)) {
std::cout <<
"
Removed statement at line
"
<< i << std::endl;
filedata[i].
clear
();
}
else
{
std::cout <<
"
Kept statement at line
"
<< i << std::endl;
}
}
else
{
decl =
bool
(endChar ==
'
;
'
|| endChar ==
'
{
'
|| endChar ==
'
}
'
);
}
}
return
changed;
}
//
Try to remove stuff from statements
static
bool
cleanupStatements
(
const
ReduceSettings &settings, std::vector<std::string> &filedata)
{
bool
changed =
false
;
for
(std::
size_t
i =
0
; i < filedata.
size
(); ++i) {
std::string line = filedata[i];
if
(line.
empty
())
continue
;
for
(std::string::size_type pos =
0U
; pos < line.
size
(); ++pos) {
//
function parameter..
if
(
std::strchr
(
"
(,
"
, line[pos])) {
const
std::string::size_type pos1 = (line[pos] ==
'
,
'
) ? pos : (pos +
1U
);
std::string::size_type pos2 = pos +
1
;
while
(pos2 < line.
size
() &&
std::isspace
(line[pos2]))
++pos2;
while
(pos2 < line.
size
() && (
std::isalnum
(line[pos2]) || line[pos2]==
'
_
'
))
++pos2;
while
(pos2 < line.
size
() &&
std::isspace
(line[pos2]))
++pos2;
if
(pos2 >= pos+
2U
&& pos2<line.
size
() &&
std::strchr
(
"
,)
"
, line[pos2])) {
const
std::string
backup
(filedata[i]);
filedata[i] = line.
substr
(
0
,pos) + line.
substr
(pos2);
if
(
test
(settings, filedata, ~
0U
)) {
std::cout <<
"
Removed function parameter at line
"
<< i <<
"
, column
"
<< pos1 << std::endl;
line = filedata[i];
changed =
true
;
continue
;
}
else
{
std::cout <<
"
Kept function parameter at line
"
<< i <<
"
, column
"
<< pos1 << std::endl;
filedata[i] = backup;
}
}
}
//
cast
if
(line[pos] ==
'
=
'
|| line[pos] ==
'
(
'
) {
const
std::string::size_type pos1 = pos +
1
;
std::string::size_type pos2 = pos +
1
;
while
(pos2 < line.
size
() &&
std::isspace
(line[pos2]))
++pos2;
if
(pos2>=line.
size
() || line[pos2]!=
'
(
'
)
continue
;
pos2++;
while
(pos2 < line.
size
() &&
std::isalpha
(line[pos2]))
++pos2;
while
(pos2 < line.
size
() &&
std::isspace
(line[pos2]))
++pos2;
if
(pos2>=line.
size
() || line[pos2]!=
'
*
'
)
continue
;
while
(pos2 < line.
size
() && line[pos2]==
'
*
'
)
++pos2;
if
(pos2<line.
size
() && line[pos2]==
'
)
'
) {
pos2++;
const
std::string
backup
(filedata[i]);
filedata[i] = line.
substr
(
0
,pos1) + line.
substr
(pos2);
if
(
test
(settings, filedata, ~
0U
)) {
std::cout <<
"
Removed cast at line
"
<< i <<
"
, column
"
<< pos1 << std::endl;
line = filedata[i];
changed =
true
;
}
else
{
std::cout <<
"
Kept cast at line
"
<< i <<
"
, column
"
<< pos1 << std::endl;
filedata[i] = backup;
}
}
}
}
}
return
changed;
}
static
bool
tryLoadLibrary
(Library& destination,
const
char
* basepath,
const
char
* filename)
{
const
Library::Error err = destination.
load
(basepath, filename);
if
(err.
errorcode
== Library::
UNKNOWN_ELEMENT
)
std::cout <<
"
reduce: Found unknown elements in configuration file '
"
<< filename <<
"
':
"
<< err.
reason
<< std::endl;
else
if
(err.
errorcode
!= Library::
OK
) {
std::string errmsg;
switch
(err.
errorcode
) {
case
Library::
OK
:
break
;
case
Library::
FILE_NOT_FOUND
:
errmsg =
"
File not found
"
;
break
;
case
Library::
BAD_XML
:
errmsg =
"
Bad XML
"
;
break
;
case
Library::
UNKNOWN_ELEMENT
:
errmsg =
"
Unexpected element
"
;
break
;
case
Library::
MISSING_ATTRIBUTE
:
errmsg =
"
Missing attribute
"
;
break
;
case
Library::
BAD_ATTRIBUTE_VALUE
:
errmsg =
"
Bad attribute value
"
;
break
;
case
Library::
UNSUPPORTED_FORMAT
:
errmsg =
"
File is of unsupported format version
"
;
break
;
case
Library::
DUPLICATE_PLATFORM_TYPE
:
errmsg =
"
Duplicate platform type
"
;
break
;
case
Library::
PLATFORM_TYPE_REDEFINED
:
errmsg =
"
Platform type redefined
"
;
break
;
}
if
(!err.
reason
.
empty
())
errmsg +=
"
'
"
+ err.
reason
+
"
'
"
;
std::cout <<
"
reduce: Failed to load library configuration file '
"
<< filename <<
"
'.
"
<< errmsg << std::endl;
return
false
;
}
return
true
;
}
int
main
(
int
argc,
char
*argv[])
{
std::cout <<
"
cppcheck tool that reduce code for a hang / false positive
"
<< std::endl;
bool
print =
false
;
ReduceSettings settings;
settings.
maxtime
=
300
;
//
default timeout = 5 minutes
bool
def =
false
;
bool
maxconfigs =
false
;
for
(
int
i =
1
; i < argc; i++) {
if
(
strcmp
(argv[i],
"
--stdout
"
) ==
0
)
print =
true
;
else
if
(
strcmp
(argv[i],
"
--hang
"
) ==
0
)
settings.
hang
=
true
;
else
if
(
strncmp
(argv[i],
"
-D
"
,
2
) ==
0
) {
if
(!settings.
userDefines
.
empty
())
settings.
userDefines
+=
"
;
"
;
if
((
strcmp
(argv[i],
"
-D
"
) ==
0
) && (i+
1
<argc))
settings.
userDefines
+= argv[++i];
else
settings.
userDefines
+= argv[i] +
2
;
def =
true
;
}
else
if
(
std::strncmp
(argv[i],
"
-I
"
,
2
) ==
0
) {
std::string path;
if
((
std::strcmp
(argv[i],
"
-I
"
) ==
0
) && (i+
1
<argc))
path = argv[++i];
else
path = argv[i] +
2
;
if
(!path.
empty
()) {
path =
Path::fromNativeSeparators
(path);
path =
Path::removeQuotationMarks
(path);
//
If path doesn't end with / or \, add it
if
(path[path.
length
()-
1
] !=
'
/
'
)
path +=
'
/
'
;
settings.
includePaths
.
push_back
(path);
}
}
else
if
(
strncmp
(argv[i],
"
--maxtime=
"
,
10
) ==
0
)
settings.
maxtime
=
std::atoi
(argv[i] +
10
);
else
if
(
strncmp
(argv[i],
"
--cfg=
"
,
6
)==
0
) {
if
(!settings.
userDefines
.
empty
())
settings.
userDefines
+=
"
;
"
;
settings.
userDefines
+= argv[i] +
6
;
}
else
if
(
std::strncmp
(argv[i],
"
--platform=
"
,
11
) ==
0
) {
std::string
platform
(
11
+argv[i]);
if
(platform ==
"
win32A
"
)
settings.
platform
(Settings::Win32A);
else
if
(platform ==
"
win32W
"
)
settings.
platform
(Settings::Win32W);
else
if
(platform ==
"
win64
"
)
settings.
platform
(Settings::Win64);
else
if
(platform ==
"
unix32
"
)
settings.
platform
(Settings::Unix32);
else
if
(platform ==
"
unix64
"
)
settings.
platform
(Settings::Unix64);
else
{
std::cerr <<
"
unrecognized platform:
"
<< platform << std::endl;
return
EXIT_FAILURE
;
}
}
else
if
(
std::strcmp
(argv[i],
"
--debug-warnings
"
) ==
0
)
settings.
debugwarnings
=
true
;
else
if
(
std::strcmp
(argv[i],
"
-f
"
) ==
0
||
std::strcmp
(argv[i],
"
--force
"
) ==
0
)
settings.
force
=
true
;
else
if
(
std::strncmp
(argv[i],
"
--enable=
"
,
9
) ==
0
) {
std::string errmsg = settings.
addEnabled
(argv[i] +
9
);
if
(!errmsg.
empty
()) {
errmsg.
erase
(
0
,
11
);
//
erase "cppcheck: " from message
std::cerr << errmsg << std::endl;
return
EXIT_FAILURE
;
}
//
when "style" is enabled, also enable "warning", "performance" and "portability"
if
(settings.
isEnabled
(Settings::
STYLE
)) {
settings.
addEnabled
(
"
warning
"
);
settings.
addEnabled
(
"
performance
"
);
settings.
addEnabled
(
"
portability
"
);
}
}
else
if
(
std::strcmp
(argv[i],
"
--inconclusive
"
) ==
0
)
settings.
inconclusive
=
true
;
else
if
(
std::strncmp
(argv[i],
"
--max-configs=
"
,
14
) ==
0
) {
settings.
force
=
false
;
std::istringstream
iss
(
14
+argv[i]);
if
(!(iss >> settings.
maxConfigs
)) {
std::cerr <<
"
argument to '--max-configs=' is not a number.
"
<< std::endl;
return
EXIT_FAILURE
;
}
if
(settings.
maxConfigs
<
1
) {
std::cerr <<
"
argument to '--max-configs=' must be greater than 0.
"
<< std::endl;
return
EXIT_FAILURE
;
}
maxconfigs =
true
;
}
else
if
(
std::strncmp
(argv[i],
"
--library=
"
,
10
) ==
0
) {
if
(!
tryLoadLibrary
(settings.
library
, argv[
0
], argv[i]+
10
))
return
EXIT_FAILURE
;
}
else
if
(
std::strcmp
(argv[i],
"
--std=posix
"
) ==
0
) {
settings.
standards
.
posix
=
true
;
}
else
if
(
std::strcmp
(argv[i],
"
--std=c89
"
) ==
0
) {
settings.
standards
.
c
= Standards::
C89
;
}
else
if
(
std::strcmp
(argv[i],
"
--std=c99
"
) ==
0
) {
settings.
standards
.
c
= Standards::
C99
;
}
else
if
(
std::strcmp
(argv[i],
"
--std=c11
"
) ==
0
) {
settings.
standards
.
c
= Standards::
C11
;
}
else
if
(
std::strcmp
(argv[i],
"
--std=c++03
"
) ==
0
) {
settings.
standards
.
cpp
= Standards::
CPP03
;
}
else
if
(
std::strcmp
(argv[i],
"
--std=c++11
"
) ==
0
) {
settings.
standards
.
cpp
= Standards::
CPP11
;
}
else
if
(settings.
filename
==
nullptr
&&
strchr
(argv[i],
'
.
'
))
settings.
filename
= argv[i];
else
if
(settings.
linenr
==
0U
&&
MathLib::isInt
(argv[i]))
settings.
linenr
=
std::atoi
(argv[i]);
else
{
std::cerr <<
"
invalid option
"
<< argv[i] << std::endl;
return
EXIT_FAILURE
;
}
}
if
(def && !settings.
force
&& !maxconfigs)
settings.
maxConfigs
=
1U
;
if
(settings.
force
)
settings.
maxConfigs
= ~
0U
;
if
((!settings.
hang
&& settings.
linenr
==
0U
) || settings.
filename
==
nullptr
) {
std::cerr <<
"
Syntax:
"
<< std::endl
<< argv[
0
] <<
"
[--stdout] [--cfg=X] [--hang] [--maxtime=60] [-D define] [-I includepath] [--force] [--enable=<id>] [--inconclusive] [--debug-warnings] [--max-configs=<limit>] [--platform=<type>] [--library=<cfg>] [--std=<id>] filename [linenr]
"
<< std::endl;
return
EXIT_FAILURE
;
}
std::cout <<
"
make sure
"
<< (settings.
hang
?
"
hang
"
:
"
false positive
"
) <<
"
can be reproduced
"
<< std::endl;
//
Execute Cppcheck on the file..
{
CppcheckExecutor
cppcheck
(settings);
if
(!cppcheck.
run
(settings.
filename
, settings.
maxtime
)) {
std::cerr <<
"
Can't reproduce false positive at line
"
<< settings.
linenr
<< std::endl;
return
EXIT_FAILURE
;
}
}
//
Read file..
std::vector<std::string>
filedata
(
readfile
(settings.
filename
));
//
Write resulting code..
if
(!
test
(settings, filedata, ~
0
)) {
std::cerr <<
"
Cleanup failed.
"
<< std::endl;
return
EXIT_FAILURE
;
}
//
Remove includes..
std::set<std::string> headers;
for
(std::
size_t
i =
0
; i < filedata.
size
(); i++) {
if
(filedata[i].
compare
(
0
,
8
,
"
#include
"
)==
0
) {
if
(
test
(settings, filedata, i)) {
std::cout <<
"
removed #include :
"
<< filedata[i] << std::endl;
filedata[i].
clear
();
}
else
{
std::string header = filedata[i];
header = header.
substr
(
1U
+ header.
find_first_of
(
"
\"
<
"
));
header = header.
erase
(header.
find_last_of
(
"
\"
>
"
));
if
(headers.
find
(header) != headers.
end
()) {
std::cerr <<
"
Failed to reduce headers
"
<< std::endl;
return
EXIT_FAILURE
;
}
headers.
insert
(header);
std::string
path
(settings.
filename
);
if
(path.
find_first_of
(
"
\\
/
"
) != std::string::npos)
path = path.
erase
(
1
+ path.
find_last_of
(
"
\\
/
"
));
else
path.
clear
();
std::cout <<
"
expand #include :
"
<< (path+header) << std::endl;
std::vector<std::string>
data
(
readfile
(path+header));
if
(!data.
empty
()) {
filedata[i].
clear
();
filedata.
insert
(filedata.
begin
()+i, data.
begin
(), data.
end
());
settings.
linenr
+= data.
size
();
}
}
}
}
bool
changed =
true
;
while
(changed) {
changed =
false
;
changed |=
removeMacrosInGlobalScope
(settings,filedata);
changed |=
removeBlocksOfCode
(settings,filedata);
changed |=
removeClassAndStructMembers
(settings,filedata);
changed |=
removeIfEndIf
(settings,filedata);
changed |=
removeUnusedDefines
(settings,filedata);
if
(settings.
hang
) {
changed |=
removeSingleLines
(settings,filedata);
changed |=
cleanupStatements
(settings,filedata);
}
}
//
Write resulting code..
{
const
std::string
outfilename
(
std::string
(
"
__out__
"
) +
std::strrchr
(settings.
filename
,
'
.
'
));
std::ofstream fout;
if
(!print)
fout.
open
(outfilename.
c_str
());
std::ostream &os = print ? std::cout : fout;
for
(std::
size_t
i =
0
; i < filedata.
size
(); i++) {
if
(!filedata[i].
empty
())
os << filedata[i] << std::endl;
}
}
return
EXIT_SUCCESS
;
}
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