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7da0a886 SDJ |
1 | /* Perform tilde expansion on paths for GDB and gdbserver. |
2 | ||
42a4f53d | 3 | Copyright (C) 2017-2019 Free Software Foundation, Inc. |
7da0a886 SDJ |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "common-defs.h" | |
21 | #include "gdb_tilde_expand.h" | |
22 | #include <glob.h> | |
23 | ||
24 | /* RAII-style class wrapping "glob". */ | |
25 | ||
26 | class gdb_glob | |
27 | { | |
28 | public: | |
29 | /* Construct a "gdb_glob" object by calling "glob" with the provided | |
30 | parameters. This function can throw if "glob" fails. */ | |
31 | gdb_glob (const char *pattern, int flags, | |
32 | int (*errfunc) (const char *epath, int eerrno)) | |
33 | { | |
34 | int ret = glob (pattern, flags, errfunc, &m_glob); | |
35 | ||
36 | if (ret != 0) | |
37 | { | |
38 | if (ret == GLOB_NOMATCH) | |
39 | error (_("Could not find a match for '%s'."), pattern); | |
40 | else | |
41 | error (_("glob could not process pattern '%s'."), | |
42 | pattern); | |
43 | } | |
44 | } | |
45 | ||
46 | /* Destroy the object and free M_GLOB. */ | |
47 | ~gdb_glob () | |
48 | { | |
49 | globfree (&m_glob); | |
50 | } | |
51 | ||
52 | /* Return the GL_PATHC component of M_GLOB. */ | |
53 | int pathc () const | |
54 | { | |
55 | return m_glob.gl_pathc; | |
56 | } | |
57 | ||
58 | /* Return the GL_PATHV component of M_GLOB. */ | |
59 | char **pathv () const | |
60 | { | |
61 | return m_glob.gl_pathv; | |
62 | } | |
63 | ||
64 | private: | |
65 | /* The actual glob object we're dealing with. */ | |
66 | glob_t m_glob; | |
67 | }; | |
68 | ||
69 | /* See common/gdb_tilde_expand.h. */ | |
70 | ||
71 | std::string | |
72 | gdb_tilde_expand (const char *dir) | |
73 | { | |
74 | gdb_glob glob (dir, GLOB_TILDE_CHECK, NULL); | |
75 | ||
76 | gdb_assert (glob.pathc () > 0); | |
77 | /* "glob" may return more than one match to the path provided by the | |
78 | user, but we are only interested in the first match. */ | |
79 | std::string expanded_dir = glob.pathv ()[0]; | |
80 | ||
81 | return expanded_dir; | |
82 | } | |
b4987c95 SDJ |
83 | |
84 | /* See common/gdb_tilde_expand.h. */ | |
85 | ||
86 | gdb::unique_xmalloc_ptr<char> | |
87 | gdb_tilde_expand_up (const char *dir) | |
88 | { | |
89 | gdb_glob glob (dir, GLOB_TILDE_CHECK, NULL); | |
90 | ||
91 | gdb_assert (glob.pathc () > 0); | |
92 | /* "glob" may return more than one match to the path provided by the | |
93 | user, but we are only interested in the first match. */ | |
94 | return gdb::unique_xmalloc_ptr<char> (xstrdup (glob.pathv ()[0])); | |
95 | } |