1 | /*---------------------------------------------------------------------------* |
2 | * <RCS keywords> |
3 | * |
4 | * C++ Library |
5 | * |
6 | * Copyright 1992-1994, David Gottner |
7 | * |
8 | * All Rights Reserved |
9 | * |
10 | * Permission to use, copy, modify, and distribute this software and its |
11 | * documentation for any purpose and without fee is hereby granted, |
12 | * provided that the above copyright notice, this permission notice and |
13 | * the following disclaimer notice appear unmodified in all copies. |
14 | * |
15 | * I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL I |
17 | * BE LIABLE FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY |
18 | * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER |
19 | * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
20 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
21 | *---------------------------------------------------------------------------*/ |
22 | |
23 | /* Modified to support --help and --version, as well as /? on Windows |
24 | * by Georg Brandl. */ |
25 | |
26 | #include <Python.h> |
27 | #include <stdio.h> |
28 | #include <string.h> |
29 | #include <wchar.h> |
30 | #include "pycore_getopt.h" |
31 | |
32 | #ifdef __cplusplus |
33 | extern "C" { |
34 | #endif |
35 | |
36 | int _PyOS_opterr = 1; /* generate error messages */ |
37 | Py_ssize_t _PyOS_optind = 1; /* index into argv array */ |
38 | const wchar_t *_PyOS_optarg = NULL; /* optional argument */ |
39 | |
40 | static const wchar_t *opt_ptr = L"" ; |
41 | |
42 | /* Python command line short and long options */ |
43 | |
44 | #define SHORT_OPTS L"bBc:dEhiIJm:OqRsStuvVW:xX:?" |
45 | |
46 | static const _PyOS_LongOption longopts[] = { |
47 | {L"check-hash-based-pycs" , 1, 0}, |
48 | {NULL, 0, 0}, |
49 | }; |
50 | |
51 | |
52 | void _PyOS_ResetGetOpt(void) |
53 | { |
54 | _PyOS_opterr = 1; |
55 | _PyOS_optind = 1; |
56 | _PyOS_optarg = NULL; |
57 | opt_ptr = L"" ; |
58 | } |
59 | |
60 | int _PyOS_GetOpt(Py_ssize_t argc, wchar_t * const *argv, int *longindex) |
61 | { |
62 | wchar_t *ptr; |
63 | wchar_t option; |
64 | |
65 | if (*opt_ptr == '\0') { |
66 | |
67 | if (_PyOS_optind >= argc) |
68 | return -1; |
69 | #ifdef MS_WINDOWS |
70 | else if (wcscmp(argv[_PyOS_optind], L"/?" ) == 0) { |
71 | ++_PyOS_optind; |
72 | return 'h'; |
73 | } |
74 | #endif |
75 | |
76 | else if (argv[_PyOS_optind][0] != L'-' || |
77 | argv[_PyOS_optind][1] == L'\0' /* lone dash */ ) |
78 | return -1; |
79 | |
80 | else if (wcscmp(argv[_PyOS_optind], L"--" ) == 0) { |
81 | ++_PyOS_optind; |
82 | return -1; |
83 | } |
84 | |
85 | else if (wcscmp(argv[_PyOS_optind], L"--help" ) == 0) { |
86 | ++_PyOS_optind; |
87 | return 'h'; |
88 | } |
89 | |
90 | else if (wcscmp(argv[_PyOS_optind], L"--version" ) == 0) { |
91 | ++_PyOS_optind; |
92 | return 'V'; |
93 | } |
94 | |
95 | opt_ptr = &argv[_PyOS_optind++][1]; |
96 | } |
97 | |
98 | if ((option = *opt_ptr++) == L'\0') |
99 | return -1; |
100 | |
101 | if (option == L'-') { |
102 | // Parse long option. |
103 | if (*opt_ptr == L'\0') { |
104 | if (_PyOS_opterr) { |
105 | fprintf(stderr, "expected long option\n" ); |
106 | } |
107 | return -1; |
108 | } |
109 | *longindex = 0; |
110 | const _PyOS_LongOption *opt; |
111 | for (opt = &longopts[*longindex]; opt->name; opt = &longopts[++(*longindex)]) { |
112 | if (!wcscmp(opt->name, opt_ptr)) |
113 | break; |
114 | } |
115 | if (!opt->name) { |
116 | if (_PyOS_opterr) { |
117 | fprintf(stderr, "unknown option %ls\n" , argv[_PyOS_optind - 1]); |
118 | } |
119 | return '_'; |
120 | } |
121 | opt_ptr = L"" ; |
122 | if (!opt->has_arg) { |
123 | return opt->val; |
124 | } |
125 | if (_PyOS_optind >= argc) { |
126 | if (_PyOS_opterr) { |
127 | fprintf(stderr, "Argument expected for the %ls options\n" , |
128 | argv[_PyOS_optind - 1]); |
129 | } |
130 | return '_'; |
131 | } |
132 | _PyOS_optarg = argv[_PyOS_optind++]; |
133 | return opt->val; |
134 | } |
135 | |
136 | if (option == 'J') { |
137 | if (_PyOS_opterr) { |
138 | fprintf(stderr, "-J is reserved for Jython\n" ); |
139 | } |
140 | return '_'; |
141 | } |
142 | |
143 | if ((ptr = wcschr(SHORT_OPTS, option)) == NULL) { |
144 | if (_PyOS_opterr) { |
145 | fprintf(stderr, "Unknown option: -%c\n" , (char)option); |
146 | } |
147 | return '_'; |
148 | } |
149 | |
150 | if (*(ptr + 1) == L':') { |
151 | if (*opt_ptr != L'\0') { |
152 | _PyOS_optarg = opt_ptr; |
153 | opt_ptr = L"" ; |
154 | } |
155 | |
156 | else { |
157 | if (_PyOS_optind >= argc) { |
158 | if (_PyOS_opterr) { |
159 | fprintf(stderr, |
160 | "Argument expected for the -%c option\n" , (char)option); |
161 | } |
162 | return '_'; |
163 | } |
164 | |
165 | _PyOS_optarg = argv[_PyOS_optind++]; |
166 | } |
167 | } |
168 | |
169 | return option; |
170 | } |
171 | |
172 | #ifdef __cplusplus |
173 | } |
174 | #endif |
175 | |
176 | |