fallback: drop fallbacks for C99/C++0x wide character functions

Drops configure check for wcsdup, wcslen, wcscasecmp, wcsncasecmp,
wcwidth, wcswidth, wcstok, fputwc, fgetwc, and wcstol. Drop the fallback
implementations of these on non-Snow Leopard platforms.

Work on #2999.

1 files changed, 0 insertions, 78 deletions

diff --git a/src/fallback.h b/src/fallback.h
index 13caf0b3..97f49523 100644
--- a/src/fallback.h
+++ b/src/fallback.h
@@ -38,14 +38,6 @@ typedef int tputs_arg_t;
 typedef char tputs_arg_t;
 #endif
 
-#ifndef SIGIO
-#define SIGIO SIGUSR1
-#endif
-
-#ifndef SIGWINCH
-#define SIGWINCH SIGUSR2
-#endif
-
 #ifndef HAVE_WINSIZE
 /// Structure used to get the size of a terminal window.
 struct winsize {
@@ -63,32 +55,6 @@ struct winsize {
 char *tparm_solaris_kludge(char *str, ...);
 #endif
 
-#ifndef HAVE_FGETWC
-// Fallback implementation of fgetwc.
-wint_t fgetwc(FILE *stream);
-#endif
-
-#ifndef HAVE_FPUTWC
-// Fallback implementation of fputwc.
-wint_t fputwc(wchar_t wc, FILE *stream);
-#endif
-
-#ifndef HAVE_WCSTOK
-/// Fallback implementation of wcstok. Uses code borrowed from glibc.
-wchar_t *wcstok(wchar_t *wcs, const wchar_t *delim, wchar_t **ptr);
-#endif
-
-#ifndef HAVE_WCWIDTH
-/// Return the number of columns used by a character. This is a libc function, but the prototype for
-/// this function is missing in some libc implementations.
-///
-/// Fish has a fallback implementation in case the implementation is missing altogether.  In locales
-/// without a native wcwidth, Unicode is probably so broken that it isn't worth trying to implement
-/// a real wcwidth. Therefore, the fallback wcwidth assumes any printing character takes up one
-/// column and anything else uses 0 columns.
-int wcwidth(wchar_t c);
-#endif
-
 /// On OS X, use weak linking for wcsdup and wcscasecmp. Weak linking allows you to call the
 /// function only if it exists at runtime. You can detect it by testing the function pointer against
 /// NULL. To avoid making the callers do that, redefine wcsdup to wcsdup_use_weak, and likewise with
@@ -103,45 +69,8 @@ int wcsncasecmp_use_weak(const wchar_t *s1, const wchar_t *s2, size_t n);
 #define wcsdup(a) wcsdup_use_weak((a))
 #define wcscasecmp(a, b) wcscasecmp_use_weak((a), (b))
 #define wcsncasecmp(a, b, c) wcsncasecmp_use_weak((a), (b), (c))
-
-#else
-
-#ifndef HAVE_WCSDUP
-/// Create a duplicate string. Wide string version of strdup. Will automatically exit if out of
-/// memory.
-wchar_t *wcsdup(const wchar_t *in);
-#endif
-
-#ifndef HAVE_WCSCASECMP
-/// Case insensitive string compare function. Wide string version of strcasecmp.
-///
-/// This implementation of wcscasecmp does not take into account esoteric locales where uppercase
-/// and lowercase do not cleanly transform between each other. Hopefully this should be fine since
-/// fish only uses this function with one of the strings supplied by fish and guaranteed to be a
-/// sane, english word. Using wcscasecmp on a user-supplied string should be considered a bug.
-int wcscasecmp(const wchar_t *a, const wchar_t *b);
-#endif
 #endif  //__APPLE__
 
-#ifndef HAVE_WCSLEN
-/// Fallback for wclsen. Returns the length of the specified string.
-size_t wcslen(const wchar_t *in);
-#endif
-
-#ifndef HAVE_WCSNCASECMP
-/// Case insensitive string compare function. Wide string version of strncasecmp.
-///
-/// This implementation of wcsncasecmp does not take into account esoteric locales where uppercase
-/// and lowercase do not cleanly transform between each other. Hopefully this should be fine since
-/// fish only uses this function with one of the strings supplied by fish and guaranteed to be a
-/// sane, english word. Using wcsncasecmp on a user-supplied string should be considered a bug.
-int wcsncasecmp(const wchar_t *a, const wchar_t *b, size_t count);
-
-/// Returns a newly allocated wide character string wich is a copy of the string in, but of length c
-/// or shorter. The returned string is always null terminated, and the null is not included in the
-/// string length.
-#endif
-
 #ifndef HAVE_WCSNDUP
 /// Fallback for wcsndup function. Returns a copy of \c in, truncated to a maximum length of \c c.
 wchar_t *wcsndup(const wchar_t *in, size_t c);
@@ -152,13 +81,6 @@ wchar_t *wcsndup(const wchar_t *in, size_t c);
 /// is exported.
 long convert_digit(wchar_t d, int base);
 
-#ifndef HAVE_WCSTOL
-/// Fallback implementation. Convert a wide character string to a number in the specified base. This
-/// functions is the wide character string equivalent of strtol. For bases of 10 or lower, 0..9 are
-/// used to represent numbers. For bases below 36, a-z and A-Z are used to represent numbers higher
-/// than 9. Higher bases than 36 are not supported.
-long wcstol(const wchar_t *nptr, wchar_t **endptr, int base);
-#endif
 #ifndef HAVE_WCSLCAT
 /// Appends src to string dst of size siz (unlike wcsncat, siz is the full size of dst, not space
 /// left).  At most siz-1 characters will be copied.  Always NUL terminates (unless siz <=