Mercurial > cpython-lru_cache-weakref

annotate Python/getopt.c @ 58707:76cf60e2d005 legacy-trunk

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normalize exceptions passed to the __exit__ method #7853 In Python 2.x, exceptions in finally blocks are not normalized. Since with statements are implemented using finally blocks, ceval.c had to be tweaked to distinguish between with finally blocks and normal ones. A test for the finalization of generators containing with statements was also added.
author Benjamin Peterson <benjamin@python.org>
date Fri, 05 Feb 2010 02:12:14 +0000
parents 7c21cc14b94f
children fd25030223b0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*---------------------------------------------------------------------------*
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2 * <RCS keywords>
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3 *
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4 * C++ Library
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5 *
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6 * Copyright 1992-1994, David Gottner
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7 *
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8 * All Rights Reserved
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9 *
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10 * Permission to use, copy, modify, and distribute this software and its
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11 * documentation for any purpose and without fee is hereby granted,
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12 * provided that the above copyright notice, this permission notice and
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13 * the following disclaimer notice appear unmodified in all copies.
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14 *
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15 * I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL I
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17 * BE LIABLE FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
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18 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER
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19 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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20 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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21 *
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22 * Nevertheless, I would like to know about bugs in this library or
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23 * suggestions for improvment. Send bug reports and feedback to
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24 * davegottner@delphi.com.
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25 *---------------------------------------------------------------------------*/
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26
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27 /* Modified to support --help and --version, as well as /? on Windows
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28 * by Georg Brandl. */
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29
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30 #include <stdio.h>
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31 #include <string.h>
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32
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33 #ifdef __cplusplus
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34 extern "C" {
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35 #endif
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36
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37 int _PyOS_opterr = 1; /* generate error messages */
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38 int _PyOS_optind = 1; /* index into argv array */
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39 char *_PyOS_optarg = NULL; /* optional argument */
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40
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41 int _PyOS_GetOpt(int argc, char **argv, char *optstring)
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42 {
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43 static char *opt_ptr = "";
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44 char *ptr;
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45 int option;
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46
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47 if (*opt_ptr == '\0') {
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48
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49 if (_PyOS_optind >= argc)
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50 return -1;
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51 #ifdef MS_WINDOWS
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52 else if (strcmp(argv[_PyOS_optind], "/?") == 0) {
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53 ++_PyOS_optind;
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54 return 'h';
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55 }
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56 #endif
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57
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58 else if (argv[_PyOS_optind][0] != '-' ||
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59 argv[_PyOS_optind][1] == '\0' /* lone dash */ )
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60 return -1;
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61
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62 else if (strcmp(argv[_PyOS_optind], "--") == 0) {
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63 ++_PyOS_optind;
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64 return -1;
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65 }
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66
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67 else if (strcmp(argv[_PyOS_optind], "--help") == 0) {
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68 ++_PyOS_optind;
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69 return 'h';
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70 }
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71
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72 else if (strcmp(argv[_PyOS_optind], "--version") == 0) {
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73 ++_PyOS_optind;
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74 return 'V';
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75 }
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76
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77
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78 opt_ptr = &argv[_PyOS_optind++][1];
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79 }
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80
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81 if ( (option = *opt_ptr++) == '\0')
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82 return -1;
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83
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84 if (option == 'J') {
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85 fprintf(stderr, "-J is reserved for Jython\n");
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86 return '_';
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87 }
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88
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89 if (option == 'X') {
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90 fprintf(stderr,
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91 "-X is reserved for implementation-specific arguments\n");
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92 return '_';
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93 }
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94
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95 if ((ptr = strchr(optstring, option)) == NULL) {
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96 if (_PyOS_opterr)
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97 fprintf(stderr, "Unknown option: -%c\n", option);
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98
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99 return '_';
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100 }
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101
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102 if (*(ptr + 1) == ':') {
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103 if (*opt_ptr != '\0') {
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104 _PyOS_optarg = opt_ptr;
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105 opt_ptr = "";
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106 }
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107
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108 else {
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109 if (_PyOS_optind >= argc) {
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110 if (_PyOS_opterr)
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111 fprintf(stderr,
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112 "Argument expected for the -%c option\n", option);
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113 return '_';
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114 }
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115
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116 _PyOS_optarg = argv[_PyOS_optind++];
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117 }
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118 }
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119
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120 return option;
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121 }
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122
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123 #ifdef __cplusplus
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124 }
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125 #endif
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126