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node/src/node_debug_options.cc at bengl/refactorhttps · bengl/node · GitHub
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#
include
"
node_debug_options.h
"
#
include
<
errno.h
>
#
include
<
stdlib.h
>
#
include
<
string.h
>
#
include
"
util.h
"
namespace
node
{
namespace
{
const
int
default_inspector_port =
9229
;
inline
std::string
remove_brackets
(
const
std::string& host) {
if
(!host.
empty
() && host.
front
() ==
'
[
'
&& host.
back
() ==
'
]
'
)
return
host.
substr
(
1
, host.
size
() -
2
);
else
return
host;
}
int
parse_and_validate_port
(
const
std::string& port) {
char
* endptr;
errno =
0
;
const
long
result =
strtol
(port.
c_str
(), &endptr,
10
);
//
NOLINT(runtime/int)
if
(errno !=
0
|| *endptr !=
'
\0
'
||
(result !=
0
&& result <
1024
) || result >
65535
) {
fprintf
(stderr,
"
Debug port must be 0 or in range 1024 to 65535.
\n
"
);
exit
(
12
);
}
return
static_cast
<
int
>(result);
}
std::pair<std::string,
int
>
split_host_port
(
const
std::string& arg) {
//
remove_brackets only works if no port is specified
//
so if it has an effect only an IPv6 address was specified
std::string host =
remove_brackets
(arg);
if
(host.
length
() < arg.
length
())
return
{host, -
1
};
size_t
colon = arg.
rfind
(
'
:
'
);
if
(colon == std::string::npos) {
//
Either a port number or a host name. Assume that
//
if it's not all decimal digits, it's a host name.
for
(
char
c : arg) {
if
(c <
'
0
'
|| c >
'
9
'
) {
return
{arg, -
1
};
}
}
return
{
"
"
,
parse_and_validate_port
(arg)};
}
//
host and port found
return
std::make_pair
(
remove_brackets
(arg.
substr
(
0
, colon)),
parse_and_validate_port
(arg.
substr
(colon +
1
)));
}
}
//
namespace
DebugOptions::DebugOptions
() :
inspector_enabled_
(
false
),
deprecated_debug_
(
false
),
break_first_line_
(
false
),
host_name_
(
"
127.0.0.1
"
), port_(-
1
) { }
bool
DebugOptions::ParseOption
(
const
char
* argv0,
const
std::string& option) {
bool
has_argument =
false
;
std::string option_name;
std::string argument;
auto
pos = option.
find
(
"
=
"
);
if
(pos == std::string::npos) {
option_name = option;
}
else
{
option_name = option.
substr
(
0
, pos);
argument = option.
substr
(pos +
1
);
if
(argument.
length
() >
0
)
has_argument =
true
;
else
argument.
clear
();
}
//
Note that --debug-port and --debug-brk in conjunction with --inspect
//
work but are undocumented.
//
--debug is no longer valid.
//
Ref: https://github.com/nodejs/node/issues/12630
//
Ref: https://github.com/nodejs/node/pull/12949
if
(option_name ==
"
--inspect
"
) {
inspector_enabled_ =
true
;
}
else
if
(option_name ==
"
--debug
"
) {
deprecated_debug_ =
true
;
}
else
if
(option_name ==
"
--inspect-brk
"
) {
inspector_enabled_ =
true
;
break_first_line_ =
true
;
}
else
if
(option_name ==
"
--debug-brk
"
) {
break_first_line_ =
true
;
deprecated_debug_ =
true
;
}
else
if
(option_name ==
"
--debug-port
"
||
option_name ==
"
--inspect-port
"
) {
if
(!has_argument) {
fprintf
(stderr,
"
%s: %s requires an argument
\n
"
,
argv0, option.
c_str
());
exit
(
9
);
}
}
else
{
return
false
;
}
#
if
!HAVE_INSPECTOR
if
(inspector_enabled_) {
fprintf
(stderr,
"
Inspector support is not available with this Node.js build
\n
"
);
}
inspector_enabled_ =
false
;
return
false
;
#
endif
//
argument can be specified for *any* option to specify host:port
if
(has_argument) {
std::pair<std::string,
int
> host_port =
split_host_port
(argument);
if
(!host_port.
first
.
empty
()) {
host_name_ = host_port.
first
;
}
if
(host_port.
second
>=
0
) {
port_ = host_port.
second
;
}
}
return
true
;
}
int
DebugOptions::port
()
const
{
int
port = port_;
if
(port <
0
) {
port = default_inspector_port;
}
return
port;
}
}
//
namespace node
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