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Use wcwidth if available and applicable.

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(If wchar_t is not Unicode, then it is not applicable.)
This commit is contained in:
Kalle Olavi Niemitalo 2006-09-24 23:56:12 +03:00 committed by Kalle Olavi Niemitalo
parent 4a5af7fd26
commit 86ed79deaf
2 changed files with 10 additions and 3 deletions
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4
configure.in
View File

@ -168,7 +168,7 @@ AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_TIME
AC_CHECK_HEADERS(wctype.h)
AC_CHECK_HEADERS(wctype.h wchar.h)
AC_CHECK_HEADERS(fcntl.h limits.h time.h unistd.h)
AC_CHECK_HEADERS(sigaction.h)
AC_CHECK_HEADERS(arpa/inet.h)
@ -279,7 +279,7 @@ AC_FUNC_MMAP
AC_FUNC_STRFTIME
AC_CHECK_FUNCS(cfmakeraw gethostbyaddr herror strerror)
AC_CHECK_FUNCS(popen uname access chmod alarm timegm mremap)
AC_CHECK_FUNCS(strcasecmp strncasecmp strcasestr strstr strchr strrchr)
AC_CHECK_FUNCS(strcasecmp strncasecmp strcasestr strstr strchr strrchr wcwidth)
AC_CHECK_FUNCS(memmove bcopy stpcpy strdup index isdigit mempcpy memrchr)
AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)
AC_CHECK_FUNCS(getifaddrs getpwnam inet_pton inet_ntop)

9
src/intl/charsets.c
View File

@ -10,6 +10,9 @@
#include <ctype.h>
#include <stdlib.h>
#if HAVE_WCHAR_H
#include <wchar.h>
#endif
#if HAVE_WCTYPE_H
#include <wctype.h>
#endif
@ -547,7 +550,6 @@ invalid_arg:
/*
* Find out number of standard terminal collumns needed for displaying symbol
* (glyph) which represents Unicode character c.
* TODO: Use wcwidth when it is available.
*
* @return 2 for double-width glyph, 1 for others.
* TODO: May be extended to return 0 for zero-width glyphs
@ -556,6 +558,10 @@ invalid_arg:
inline int
unicode_to_cell(unicode_val_T c)
{
#if __STDC_ISO_10646__ && HAVE_WCWIDTH
if (wcwidth(c) >= 2)
return 2;
#else /* !__STDC_ISO_10646 || !HAVE_WCWIDTH */
if (c >= 0x1100
&& (c <= 0x115f /* Hangul Jamo */
|| c == 0x2329
@ -571,6 +577,7 @@ unicode_to_cell(unicode_val_T c)
|| (c >= 0x20000 && c <= 0x2fffd)
|| (c >= 0x30000 && c <= 0x3fffd)))
return 2;
#endif /* !__STDC_ISO_10646 || !HAVE_WCWIDTH */
return 1;
}