mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/* Perform tilde expansion on paths for GDB and gdbserver.
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Copyright (C) 2017-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "common-defs.h"
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#include <algorithm>
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#include "filenames.h"
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#include "gdb_tilde_expand.h"
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#include <glob.h>
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/* RAII-style class wrapping "glob". */
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class gdb_glob
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{
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public:
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/* Construct a "gdb_glob" object by calling "glob" with the provided
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parameters. This function can throw if "glob" fails. */
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gdb_glob (const char *pattern, int flags,
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int (*errfunc) (const char *epath, int eerrno))
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{
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int ret = glob (pattern, flags, errfunc, &m_glob);
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if (ret != 0)
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{
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if (ret == GLOB_NOMATCH)
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error (_("Could not find a match for '%s'."), pattern);
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else
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error (_("glob could not process pattern '%s'."),
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pattern);
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}
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}
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/* Destroy the object and free M_GLOB. */
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~gdb_glob ()
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{
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globfree (&m_glob);
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}
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/* Return the GL_PATHC component of M_GLOB. */
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int pathc () const
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{
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return m_glob.gl_pathc;
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}
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/* Return the GL_PATHV component of M_GLOB. */
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char **pathv () const
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{
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return m_glob.gl_pathv;
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}
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private:
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/* The actual glob object we're dealing with. */
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glob_t m_glob;
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};
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/* See gdbsupport/gdb_tilde_expand.h. */
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std::string
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gdb_tilde_expand (const char *dir)
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{
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if (dir[0] != '~')
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return std::string (dir);
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/* This function uses glob in order to expand the ~. However, this function
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will fail to expand if the actual dir we are looking for does not exist.
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Given "~/does/not/exist", glob will fail.
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In order to avoid such limitation, we only use glob to expand "~" and keep
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"/does/not/exist" unchanged.
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Similarly, to expand ~gdb/might/not/exist, we only expand "~gdb" using
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glob and leave "/might/not/exist" unchanged. */
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const std::string d (dir);
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/* Look for the first dir separator (if any) and split d around it. */
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const auto first_sep
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= std::find_if (d.cbegin (), d.cend(),
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[] (const char c) -> bool
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{ return IS_DIR_SEPARATOR (c); });
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const std::string to_expand (d.cbegin (), first_sep);
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const std::string remainder (first_sep, d.cend ());
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const gdb_glob glob (to_expand.c_str (), GLOB_TILDE_CHECK, nullptr);
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gdb_assert (glob.pathc () == 1);
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return std::string (glob.pathv ()[0]) + remainder;
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}
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