Dogcows Code - chaz/tar/blob - src/warning.c

   1 /* Warnings for GNU tar.
   2
   3    Copyright 2009, 2012-2013 Free Software Foundation, Inc.
   4
   5    This file is part of GNU tar.
   6
   7    GNU tar 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    GNU tar 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 <system.h>
  21 #include <argmatch.h>
  22
  23 #include "common.h"
  24
  25 static char const *const warning_args[] = {
  26   "all",
  27   "alone-zero-block",
  28   "bad-dumpdir",
  29   "cachedir",
  30   "contiguous-cast",
  31   "file-changed",
  32   "file-ignored",
  33   "file-removed",
  34   "file-shrank",
  35   "file-unchanged",
  36   "filename-with-nuls",
  37   "ignore-archive",
  38   "ignore-newer",
  39   "new-directory",
  40   "rename-directory",
  41   "symlink-cast",
  42   "timestamp",
  43   "unknown-cast",
  44   "unknown-keyword",
  45   "xdev",
  46   "decompress-program",
  47   "existing-file",
  48   "xattr-write",
  49   NULL
  50 };
  51
  52 static int warning_types[] = {
  53   WARN_ALL,
  54   WARN_ALONE_ZERO_BLOCK,
  55   WARN_BAD_DUMPDIR,
  56   WARN_CACHEDIR,
  57   WARN_CONTIGUOUS_CAST,
  58   WARN_FILE_CHANGED,
  59   WARN_FILE_IGNORED,
  60   WARN_FILE_REMOVED,
  61   WARN_FILE_SHRANK,
  62   WARN_FILE_UNCHANGED,
  63   WARN_FILENAME_WITH_NULS,
  64   WARN_IGNORE_ARCHIVE,
  65   WARN_IGNORE_NEWER,
  66   WARN_NEW_DIRECTORY,
  67   WARN_RENAME_DIRECTORY,
  68   WARN_SYMLINK_CAST,
  69   WARN_TIMESTAMP,
  70   WARN_UNKNOWN_CAST,
  71   WARN_UNKNOWN_KEYWORD,
  72   WARN_XDEV,
  73   WARN_DECOMPRESS_PROGRAM,
  74   WARN_EXISTING_FILE,
  75   WARN_XATTR_WRITE
  76 };
  77
  78 ARGMATCH_VERIFY (warning_args, warning_types);
  79
  80 int warning_option = WARN_ALL;
  81
  82 void
  83 set_warning_option (const char *arg)
  84 {
  85   int negate = 0;
  86   int option;
  87
  88   if (strcmp (arg, "none") == 0)
  89     {
  90       warning_option = 0;
  91       return;
  92     }
  93   if (strlen (arg) > 2 && memcmp (arg, "no-", 3) == 0)
  94     {
  95       negate = 1;
  96       arg += 3;
  97     }
  98
  99   option = XARGMATCH ("--warning", arg,
 100                       warning_args, warning_types);
 101   if (negate)
 102     warning_option &= ~option;
 103   else
 104     warning_option |= option;
 105 }