annotate lib/dirname.h @ 448:5cccf90bf838 3.0 tip

Fixed bug with complex external references generating invalid relocations in the object file
author lost@l-w.ca
date Fri, 05 Nov 2010 22:27:00 -0600
parents b8bf63962a99
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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434
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1 /* Take file names apart into directory and base names.
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2
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3 Copyright (C) 1998, 2001, 2003-2006, 2009-2010 Free Software Foundation,
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4 Inc.
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5
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6 This program is free software: you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3 of the License, or
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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18
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19 #ifndef DIRNAME_H_
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20 # define DIRNAME_H_ 1
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21
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22 # include <stdbool.h>
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23 # include <stddef.h>
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24
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25 # ifndef DIRECTORY_SEPARATOR
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26 # define DIRECTORY_SEPARATOR '/'
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27 # endif
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28
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29 # ifndef ISSLASH
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30 # define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
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31 # endif
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32
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33 # ifndef FILE_SYSTEM_PREFIX_LEN
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34 # if FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX
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35 /* This internal macro assumes ASCII, but all hosts that support drive
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36 letters use ASCII. */
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37 # define _IS_DRIVE_LETTER(c) (((unsigned int) (c) | ('a' - 'A')) - 'a' \
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38 <= 'z' - 'a')
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39 # define FILE_SYSTEM_PREFIX_LEN(Filename) \
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40 (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0)
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41 # else
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42 # define FILE_SYSTEM_PREFIX_LEN(Filename) 0
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43 # endif
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44 # endif
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45
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46 # ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
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47 # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
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48 # endif
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49
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50 # ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
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51 # define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
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52 # endif
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53
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54 # if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
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55 # define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)])
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56 # else
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57 # define IS_ABSOLUTE_FILE_NAME(F) \
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58 (ISSLASH ((F)[0]) || 0 < FILE_SYSTEM_PREFIX_LEN (F))
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59 # endif
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60 # define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F))
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61
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62 # if GNULIB_DIRNAME
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63 char *base_name (char const *file);
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64 char *dir_name (char const *file);
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65 # endif
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66
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67 char *mdir_name (char const *file);
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68 size_t base_len (char const *file);
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69 size_t dir_len (char const *file);
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70 char *last_component (char const *file);
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71
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72 bool strip_trailing_slashes (char *file);
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73
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74 #endif /* not DIRNAME_H_ */