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272
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1 /* A substitute <strings.h>.
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2
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3 Copyright (C) 2007-2008 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software Foundation,
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17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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18
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19 #ifndef _GL_STRINGS_H
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20
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21 #if __GNUC__ >= 3
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22 @PRAGMA_SYSTEM_HEADER@
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23 #endif
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24
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25 /* The include_next requires a split double-inclusion guard. */
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26 #@INCLUDE_NEXT@ @NEXT_STRINGS_H@
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27
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28 #ifndef _GL_STRINGS_H
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29 #define _GL_STRINGS_H
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30
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31
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32 /* The definition of GL_LINK_WARNING is copied here. */
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33
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34
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35 #ifdef __cplusplus
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36 extern "C" {
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37 #endif
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38
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39
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40 /* Compare strings S1 and S2, ignoring case, returning less than, equal to or
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41 greater than zero if S1 is lexicographically less than, equal to or greater
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42 than S2.
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43 Note: This function does not work in multibyte locales. */
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44 #if ! @HAVE_STRCASECMP@
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45 extern int strcasecmp (char const *s1, char const *s2);
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46 #endif
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47 #if defined GNULIB_POSIXCHECK
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48 /* strcasecmp() does not work with multibyte strings:
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49 POSIX says that it operates on "strings", and "string" in POSIX is defined
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50 as a sequence of bytes, not of characters. */
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51 # undef strcasecmp
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52 # define strcasecmp(a,b) \
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53 (GL_LINK_WARNING ("strcasecmp cannot work correctly on character strings " \
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54 "in multibyte locales - " \
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55 "use mbscasecmp if you care about " \
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56 "internationalization, or use c_strcasecmp (from " \
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57 "gnulib module c-strcase) if you want a locale " \
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58 "independent function"), \
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59 strcasecmp (a, b))
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60 #endif
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61
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62 /* Compare no more than N bytes of strings S1 and S2, ignoring case,
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63 returning less than, equal to or greater than zero if S1 is
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64 lexicographically less than, equal to or greater than S2.
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65 Note: This function cannot work correctly in multibyte locales. */
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66 #if ! @HAVE_DECL_STRNCASECMP@
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67 extern int strncasecmp (char const *s1, char const *s2, size_t n);
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68 #endif
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69 #if defined GNULIB_POSIXCHECK
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70 /* strncasecmp() does not work with multibyte strings:
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71 POSIX says that it operates on "strings", and "string" in POSIX is defined
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72 as a sequence of bytes, not of characters. */
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73 # undef strncasecmp
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74 # define strncasecmp(a,b,n) \
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75 (GL_LINK_WARNING ("strncasecmp cannot work correctly on character " \
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76 "strings in multibyte locales - " \
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77 "use mbsncasecmp or mbspcasecmp if you care about " \
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78 "internationalization, or use c_strncasecmp (from " \
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79 "gnulib module c-strcase) if you want a locale " \
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80 "independent function"), \
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81 strncasecmp (a, b, n))
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82 #endif
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83
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84
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85 #ifdef __cplusplus
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86 }
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87 #endif
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88
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89 #endif /* _GL_STRING_H */
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90 #endif /* _GL_STRING_H */
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