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80fd2826 TT |
1 | /* Functions to deal with the inferior being executed on GDB or |
2 | GDBserver. | |
3 | ||
b811d2c2 | 4 | Copyright (C) 2019-2020 Free Software Foundation, Inc. |
80fd2826 TT |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #include "gdbsupport/common-defs.h" | |
22 | #include "gdbsupport/common-inferior.h" | |
23 | ||
24 | /* See common-inferior.h. */ | |
25 | ||
26 | bool startup_with_shell = true; | |
92651b1d MW |
27 | |
28 | /* See common-inferior.h. */ | |
29 | ||
30 | char * | |
31 | construct_inferior_arguments (int argc, char **argv) | |
32 | { | |
33 | char *result; | |
34 | ||
35 | /* ARGC should always be at least 1, but we double check this | |
36 | here. This is also needed to silence -Werror-stringop | |
37 | warnings. */ | |
38 | gdb_assert (argc > 0); | |
39 | ||
40 | if (startup_with_shell) | |
41 | { | |
42 | #ifdef __MINGW32__ | |
43 | /* This holds all the characters considered special to the | |
44 | Windows shells. */ | |
45 | static const char special[] = "\"!&*|[]{}<>?`~^=;, \t\n"; | |
46 | static const char quote = '"'; | |
47 | #else | |
48 | /* This holds all the characters considered special to the | |
49 | typical Unix shells. We include `^' because the SunOS | |
50 | /bin/sh treats it as a synonym for `|'. */ | |
51 | static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n"; | |
52 | static const char quote = '\''; | |
53 | #endif | |
54 | int i; | |
55 | int length = 0; | |
56 | char *out, *cp; | |
57 | ||
58 | /* We over-compute the size. It shouldn't matter. */ | |
59 | for (i = 0; i < argc; ++i) | |
60 | length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0'); | |
61 | ||
62 | result = (char *) xmalloc (length); | |
63 | out = result; | |
64 | ||
65 | for (i = 0; i < argc; ++i) | |
66 | { | |
67 | if (i > 0) | |
68 | *out++ = ' '; | |
69 | ||
70 | /* Need to handle empty arguments specially. */ | |
71 | if (argv[i][0] == '\0') | |
72 | { | |
73 | *out++ = quote; | |
74 | *out++ = quote; | |
75 | } | |
76 | else | |
77 | { | |
78 | #ifdef __MINGW32__ | |
79 | int quoted = 0; | |
80 | ||
81 | if (strpbrk (argv[i], special)) | |
82 | { | |
83 | quoted = 1; | |
84 | *out++ = quote; | |
85 | } | |
86 | #endif | |
87 | for (cp = argv[i]; *cp; ++cp) | |
88 | { | |
89 | if (*cp == '\n') | |
90 | { | |
91 | /* A newline cannot be quoted with a backslash (it | |
92 | just disappears), only by putting it inside | |
93 | quotes. */ | |
94 | *out++ = quote; | |
95 | *out++ = '\n'; | |
96 | *out++ = quote; | |
97 | } | |
98 | else | |
99 | { | |
100 | #ifdef __MINGW32__ | |
101 | if (*cp == quote) | |
102 | #else | |
103 | if (strchr (special, *cp) != NULL) | |
104 | #endif | |
105 | *out++ = '\\'; | |
106 | *out++ = *cp; | |
107 | } | |
108 | } | |
109 | #ifdef __MINGW32__ | |
110 | if (quoted) | |
111 | *out++ = quote; | |
112 | #endif | |
113 | } | |
114 | } | |
115 | *out = '\0'; | |
116 | } | |
117 | else | |
118 | { | |
119 | /* In this case we can't handle arguments that contain spaces, | |
120 | tabs, or newlines -- see breakup_args(). */ | |
121 | int i; | |
122 | int length = 0; | |
123 | ||
124 | for (i = 0; i < argc; ++i) | |
125 | { | |
126 | char *cp = strchr (argv[i], ' '); | |
127 | if (cp == NULL) | |
128 | cp = strchr (argv[i], '\t'); | |
129 | if (cp == NULL) | |
130 | cp = strchr (argv[i], '\n'); | |
131 | if (cp != NULL) | |
132 | error (_("can't handle command-line " | |
133 | "argument containing whitespace")); | |
134 | length += strlen (argv[i]) + 1; | |
135 | } | |
136 | ||
137 | result = (char *) xmalloc (length); | |
138 | result[0] = '\0'; | |
139 | for (i = 0; i < argc; ++i) | |
140 | { | |
141 | if (i > 0) | |
142 | strcat (result, " "); | |
143 | strcat (result, argv[i]); | |
144 | } | |
145 | } | |
146 | ||
147 | return result; | |
148 | } |