gdb/gdb_regex.c

   1 /* Copyright (C) 2011-2020 Free Software Foundation, Inc.
   2
   3    This file is part of GDB.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include "defs.h"
  19 #include "gdb_regex.h"
  20 #include "gdbsupport/def-vector.h"
  21
  22 compiled_regex::compiled_regex (const char *regex, int cflags,
  23                                 const char *message)
  24 {
  25   gdb_assert (regex != NULL);
  26   gdb_assert (message != NULL);
  27
  28   int code = regcomp (&m_pattern, regex, cflags);
  29   if (code != 0)
  30     {
  31       size_t length = regerror (code, &m_pattern, NULL, 0);
  32       gdb::def_vector<char> err (length);
  33
  34       regerror (code, &m_pattern, err.data (), length);
  35       error (("%s: %s"), message, err.data ());
  36     }
  37 }
  38
  39 compiled_regex::~compiled_regex ()
  40 {
  41   regfree (&m_pattern);
  42 }
  43
  44 int
  45 compiled_regex::exec (const char *string, size_t nmatch,
  46                       regmatch_t pmatch[], int eflags) const
  47 {
  48   return regexec (&m_pattern, string, nmatch, pmatch, eflags);
  49 }
  50
  51 int
  52 compiled_regex::search (const char *string,
  53                         int length, int start, int range,
  54                         struct re_registers *regs)
  55 {
  56   return re_search (&m_pattern, string, length, start, range, regs);
  57 }