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[gnulib.git] / lib / wctype.in.h

diff --git a/lib/wctype.in.h b/lib/wctype.in.h
index 73ce09f..4bae6d0 100644 (file)
--- a/lib/wctype.in.h
+++ b/lib/wctype.in.h
@@ -1,6 +1,6 @@
 /* A substitute for ISO C99 <wctype.h>, for platforms that lack it.
 
-   Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2006-2009 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -28,6 +28,10 @@
 
 #ifndef _GL_WCTYPE_H
 
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+
 #if @HAVE_WINT_T@
 /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.
    Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
@@ -50,15 +54,18 @@
 #ifndef _GL_WCTYPE_H
 #define _GL_WCTYPE_H
 
-#if @HAVE_WINT_T@
-typedef wint_t __wctype_wint_t;
-#else
-typedef int __wctype_wint_t;
+/* Define wint_t.  (Also done in wchar.in.h.)  */
+#if !@HAVE_WINT_T@ && !defined wint_t
+# define wint_t int
+# ifndef WEOF
+#  define WEOF -1
+# endif
 #endif
 
 /* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions.
+   Linux libc5 has <wctype.h> and the functions but they are broken.
    Assume all 12 functions are implemented the same way, or not at all.  */
-#if ! @HAVE_ISWCNTRL@
+#if ! @HAVE_ISWCNTRL@ || @REPLACE_ISWCNTRL@
 
 /* IRIX 5.3 has macros but no functions, its isw* macros refer to an
    undefined variable _ctmp_ and to <ctype.h> macros like _P, and they
@@ -77,85 +84,148 @@ typedef int __wctype_wint_t;
 #  undef iswspace
 #  undef iswupper
 #  undef iswxdigit
+#  undef towlower
+#  undef towupper
+
+/* Linux libc5 has <wctype.h> and the functions but they are broken.  */
+#  if @REPLACE_ISWCNTRL@
+#   define iswalnum rpl_iswalnum
+#   define iswalpha rpl_iswalpha
+#   define iswblank rpl_iswblank
+#   define iswcntrl rpl_iswcntrl
+#   define iswdigit rpl_iswdigit
+#   define iswgraph rpl_iswgraph
+#   define iswlower rpl_iswlower
+#   define iswprint rpl_iswprint
+#   define iswpunct rpl_iswpunct
+#   define iswspace rpl_iswspace
+#   define iswupper rpl_iswupper
+#   define iswxdigit rpl_iswxdigit
+#   define towlower rpl_towlower
+#   define towupper rpl_towupper
+#  endif
 
 static inline int
-iswalnum (__wctype_wint_t wc)
+iswalnum (wint_t wc)
 {
   return ((wc >= '0' && wc <= '9')
-         || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
+          || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
 }
 
 static inline int
-iswalpha (__wctype_wint_t wc)
+iswalpha (wint_t wc)
 {
   return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z';
 }
 
 static inline int
-iswblank (__wctype_wint_t wc)
+iswblank (wint_t wc)
 {
   return wc == ' ' || wc == '\t';
 }
 
 static inline int
-iswcntrl (__wctype_wint_t wc)
+iswcntrl (wint_t wc)
 {
   return (wc & ~0x1f) == 0 || wc == 0x7f;
 }
 
 static inline int
-iswdigit (__wctype_wint_t wc)
+iswdigit (wint_t wc)
 {
   return wc >= '0' && wc <= '9';
 }
 
 static inline int
-iswgraph (__wctype_wint_t wc)
+iswgraph (wint_t wc)
 {
   return wc >= '!' && wc <= '~';
 }
 
 static inline int
-iswlower (__wctype_wint_t wc)
+iswlower (wint_t wc)
 {
   return wc >= 'a' && wc <= 'z';
 }
 
 static inline int
-iswprint (__wctype_wint_t wc)
+iswprint (wint_t wc)
 {
   return wc >= ' ' && wc <= '~';
 }
 
 static inline int
-iswpunct (__wctype_wint_t wc)
+iswpunct (wint_t wc)
 {
   return (wc >= '!' && wc <= '~'
-         && !((wc >= '0' && wc <= '9')
-              || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
+          && !((wc >= '0' && wc <= '9')
+               || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
 }
 
 static inline int
-iswspace (__wctype_wint_t wc)
+iswspace (wint_t wc)
 {
   return (wc == ' ' || wc == '\t'
-         || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
+          || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
 }
 
 static inline int
-iswupper (__wctype_wint_t wc)
+iswupper (wint_t wc)
 {
   return wc >= 'A' && wc <= 'Z';
 }
 
 static inline int
-iswxdigit (__wctype_wint_t wc)
+iswxdigit (wint_t wc)
 {
   return ((wc >= '0' && wc <= '9')
-         || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
+          || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
+}
+
+static inline wint_t
+towlower (wint_t wc)
+{
+  return (wc >= 'A' && wc <= 'Z' ? wc - 'A' + 'a' : wc);
+}
+
+static inline wint_t
+towupper (wint_t wc)
+{
+  return (wc >= 'a' && wc <= 'z' ? wc - 'a' + 'A' : wc);
 }
 
 # endif /* ! HAVE_ISWCNTRL */
 
+# if defined __MINGW32__
+
+/* On native Windows, wchar_t is uint16_t, and wint_t is uint32_t.
+   The functions towlower and towupper are implemented in the MSVCRT library
+   to take a wchar_t argument and return a wchar_t result.  mingw declares
+   these functions to take a wint_t argument and return a wint_t result.
+   This means that:
+   1. When the user passes an argument outside the range 0x0000..0xFFFF, the
+      function will look only at the lower 16 bits.  This is allowed according
+      to POSIX.
+   2. The return value is returned in the lower 16 bits of the result register.
+      The upper 16 bits are random: whatever happened to be in that part of the
+      result register.  We need to fix this by adding a zero-extend from
+      wchar_t to wint_t after the call.  */
+
+static inline wint_t
+rpl_towlower (wint_t wc)
+{
+  return (wint_t) (wchar_t) towlower (wc);
+}
+#  define towlower rpl_towlower
+
+static inline wint_t
+rpl_towupper (wint_t wc)
+{
+  return (wint_t) (wchar_t) towupper (wc);
+}
+#  define towupper rpl_towupper
+
+# endif
+
 #endif /* _GL_WCTYPE_H */
 #endif /* _GL_WCTYPE_H */