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cpython/Python/getopt.c at 3.5 · python-emscripten/cpython · GitHub
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/*---------------------------------------------------------------------------*
* <RCS keywords>
*
* C++ Library
*
* Copyright 1992-1994, David Gottner
*
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice, this permission notice and
* the following disclaimer notice appear unmodified in all copies.
*
* I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL I
* BE LIABLE FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
* DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Nevertheless, I would like to know about bugs in this library or
* suggestions for improvment. Send bug reports and feedback to
* davegottner@delphi.com.
*---------------------------------------------------------------------------*/
/* Modified to support --help and --version, as well as /? on Windows
* by Georg Brandl. */
#include
<Python.h>
#include
<stdio.h>
#include
<string.h>
#include
<wchar.h>
#include
<pygetopt.h>
#ifdef
__cplusplus
extern
"C"
{
#endif
int
_PyOS_opterr
=
1
;
/* generate error messages */
int
_PyOS_optind
=
1
;
/* index into argv array */
wchar_t
*
_PyOS_optarg
=
NULL
;
/* optional argument */
static
wchar_t
*
opt_ptr
=
L""
;
void
_PyOS_ResetGetOpt
(
void
)
{
_PyOS_opterr
=
1
;
_PyOS_optind
=
1
;
_PyOS_optarg
=
NULL
;
opt_ptr
=
L""
;
}
int
_PyOS_GetOpt
(
int
argc
,
wchar_t
*
*
argv
,
wchar_t
*
optstring
)
{
wchar_t
*
ptr
;
wchar_t
option
;
if
(
*
opt_ptr
==
'\0'
) {
if
(
_PyOS_optind
>=
argc
)
return
-1
;
#ifdef
MS_WINDOWS
else
if
(
wcscmp
(
argv
[
_PyOS_optind
],
L
"/?")
==
0
) {
++
_PyOS_optind
;
return
'h'
;
}
#endif
else
if
(
argv
[
_PyOS_optind
][
0
]
!=
L'-'
||
argv
[
_PyOS_optind
][
1
]
==
L'\0'
/* lone dash */
)
return
-1
;
else
if
(
wcscmp
(
argv
[
_PyOS_optind
],
L
"
--
")
==
0
) {
++
_PyOS_optind
;
return
-1
;
}
else
if
(
wcscmp
(
argv
[
_PyOS_optind
],
L
"
--
help
")
==
0
) {
++
_PyOS_optind
;
return
'h'
;
}
else
if
(
wcscmp
(
argv
[
_PyOS_optind
],
L
"
--
version
")
==
0
) {
++
_PyOS_optind
;
return
'V'
;
}
opt_ptr
=
&
argv
[
_PyOS_optind
++
][
1
];
}
if
((
option
=
*
opt_ptr
++
)
==
L'\
0
')
return
-1
;
if
(
option
==
'
J
') {
if
(
_PyOS_opterr
)
fprintf
(
stderr
,
"-J is reserved for Jython\n"
);
return
'_'
;
}
if
((
ptr
=
wcschr
(
optstring
,
option
))
==
NULL) {
if
(
_PyOS_opterr
)
fprintf
(
stderr
, "
Unknown
option
:
-
%
c
\
n
", (
char
)
option
);
return
'
_
';
}
if
(
*
(
ptr
+
1
)
==
L':') {
if
(
*
opt_ptr
!=
L'\
0
') {
_PyOS_optarg
=
opt_ptr
;
opt_ptr
=
L""
;
}
else
{
if
(
_PyOS_optind
>=
argc
) {
if
(
_PyOS_opterr
)
fprintf
(
stderr
,
"Argument expected for the -%c option\n"
, (
char
)
option
);
return
'_'
;
}
_PyOS_optarg
=
argv
[
_PyOS_optind
++
];
}
}
return
option
;
}
#ifdef
__cplusplus
}
#endif
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