cpython-lru_cache-weakref: Python/getopt.c annotate

annotate Python/getopt.c @ 29643:fa97293533a9 legacy-trunk

Add PyThreadState_SetAsyncExc(long, PyObject *). A new API (only accessible from C) to interrupt a thread by sending it an exception. This is not always effective, but might help some people. Requested by Just van Rossum and Alex Martelli. It is intentional that you have to write your own C extension to call it from Python. Docs will have to wait.

author	Guido van Rossum <guido@python.org>
date	Sat, 28 Jun 2003 21:53:52 +0000
parents	a826a46bae54
children	2f3f2e32dfd9

rev	line source
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	1 /---------------------------------------------------------------------------
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	2 * <RCS keywords>
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	3 *
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	4 * C++ Library
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	5 *
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	6 * Copyright 1992-1994, David Gottner
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	7 *
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	8 * All Rights Reserved
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	9 *
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	10 * Permission to use, copy, modify, and distribute this software and its
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	11 * documentation for any purpose and without fee is hereby granted,
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	12 * provided that the above copyright notice, this permission notice and
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	13 * the following disclaimer notice appear unmodified in all copies.
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	14 *
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	15 * I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL I
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	17 * BE LIABLE FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	18 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	19 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	20 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	21 *
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	22 * Nevertheless, I would like to know about bugs in this library or
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	23 * suggestions for improvment. Send bug reports and feedback to
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	24 * davegottner@delphi.com.
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	25 ---------------------------------------------------------------------------/
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	26
7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	27 #include <stdio.h>
7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	28 #include <string.h>
7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	29
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	30 int _PyOS_opterr = 1; /* generate error messages */
a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	31 int _PyOS_optind = 1; /* index into argv array */
a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	32 char _PyOS_optarg = NULL; / optional argument */
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	33
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	34 int _PyOS_GetOpt(int argc, char *argv, char optstring)
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	35 {
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	36 static char *opt_ptr = "";
a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	37 char *ptr;
a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	38 int option;
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	39
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	40 if (*opt_ptr == '\0') {
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	41
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	42 if (_PyOS_optind >= argc \|\| argv[_PyOS_optind][0] != '-' \|\|
a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	43 argv[_PyOS_optind][1] == '\0' /* lone dash */ )
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	44 return -1;
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	45
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	46 else if (strcmp(argv[_PyOS_optind], "--") == 0) {
a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	47 ++_PyOS_optind;
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	48 return -1;
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	49 }
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	50
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	51 opt_ptr = &argv[_PyOS_optind++][1];
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	52 }
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	53
6364 f39bee3ff22b Fix a bug in this code that made it do the wrong thing when an option Guido van Rossum <guido@python.org> parents: 5313 diff changeset	54 if ( (option = *opt_ptr++) == '\0')
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	55 return -1;
6364 f39bee3ff22b Fix a bug in this code that made it do the wrong thing when an option Guido van Rossum <guido@python.org> parents: 5313 diff changeset	56
f39bee3ff22b Fix a bug in this code that made it do the wrong thing when an option Guido van Rossum <guido@python.org> parents: 5313 diff changeset	57 if ((ptr = strchr(optstring, option)) == NULL) {
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	58 if (_PyOS_opterr)
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	59 fprintf(stderr, "Unknown option: -%c\n", option);
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	60
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	61 return '?';
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	62 }
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	63
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	64 if (*(ptr + 1) == ':') {
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	65 if (*opt_ptr != '\0') {
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	66 _PyOS_optarg = opt_ptr;
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	67 opt_ptr = "";
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	68 }
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	69
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	70 else {
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	71 if (_PyOS_optind >= argc) {
a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	72 if (_PyOS_opterr)
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	73 fprintf(stderr,
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	74 "Argument expected for the -%c option\n", option);
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	75 return '?';
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	76 }
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	77
15374 a826a46bae54 Move our own getopt() implementation to _PyOS_GetOpt(), and use it Thomas Wouters <thomas@python.org> parents: 13658 diff changeset	78 _PyOS_optarg = argv[_PyOS_optind++];
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	79 }
ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	80 }
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	81
1598 ecbadb818847 New version handles -o<string> same as -o <string> Guido van Rossum <guido@python.org> parents: 1585 diff changeset	82 return option;
1585 7c75f60468f8 A getopt.c for your amusement Guido van Rossum <guido@python.org> parents: diff changeset	83 }

Mercurial > cpython-lru_cache-weakref

annotate Python/getopt.c @ 29643:fa97293533a9 legacy-trunk