configure.in: Check for wchar.h, mbstowcs, and wcswidth.

* configure.in: Check for wchar.h, mbstowcs, and wcswidth.
        * configure, config.in: Regenerate.
        * intl.c (gcc_gettext_width): New function.
        * intl.h: Prototype it.
cp:
        * call.c (print_z_candidates): Use gcc_gettext_width, not
        strlen, to determine how much padding to use.

From-SVN: r65517

gcc/ChangeLog

@@ -1,3 +1,10 @@
+2003-04-12  Zack Weinberg  <zack@codesourcery.com>
+
+	* configure.in: Check for wchar.h, mbstowcs, and wcswidth.
+	* configure, config.in: Regenerate.
+	* intl.c (gcc_gettext_width): New function.
+	* intl.h: Prototype it.
+
 2003-04-12  Stephane Carrez  <stcarrez@nerim.fr>
 
 	* config/m68hc11/m68hc11.h (TARGET_SWITCHES): Fix -mnominmax option;
@@ -52,7 +59,7 @@
 	* configure: Regenerate.
 	* config.in: Regenerate.
 	* config/alpha/t-crtfm: Use -frandom-seed.
-	
+
 	* doc/extend.texi (Empty Structures): New.
 
 	* c-pch.c: Include flags.h.  Add comments to routines.

gcc/config.in

@@ -162,6 +162,9 @@
 /* Define if you have the lstat function.  */
 #undef HAVE_LSTAT
 
+/* Define if you have the mbstowcs function.  */
+#undef HAVE_MBSTOWCS
+
 /* Define if you have the mempcpy function.  */
 #undef HAVE_MEMPCPY
 
@@ -216,6 +219,9 @@
 /* Define if you have the tsearch function.  */
 #undef HAVE_TSEARCH
 
+/* Define if you have the wcswidth function.  */
+#undef HAVE_WCSWIDTH
+
 /* Define if you have the <argz.h> header file.  */
 #undef HAVE_ARGZ_H
 
@@ -279,6 +285,9 @@
 /* Define if you have the <unistd.h> header file.  */
 #undef HAVE_UNISTD_H
 
+/* Define if you have the <wchar.h> header file.  */
+#undef HAVE_WCHAR_H
+
 /* Define to enable the use of a default linker. */
 #undef DEFAULT_LINKER
 

gcc/configure

@@ -2434,7 +2434,7 @@ fi
 
 
 # Find some useful tools
-for ac_prog in gawk mawk nawk awk
+for ac_prog in mawk gawk nawk awk
 do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
@@ -3102,7 +3102,7 @@ fi
 for ac_hdr in limits.h stddef.h string.h strings.h stdlib.h time.h \
 		 fcntl.h unistd.h sys/file.h sys/time.h \
 		 sys/resource.h sys/param.h sys/times.h sys/stat.h \
-		 direct.h malloc.h langinfo.h ldfcn.h
+		 direct.h malloc.h langinfo.h ldfcn.h wchar.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
@@ -3714,7 +3714,7 @@ fi
 for ac_func in times clock dup2 kill getrlimit setrlimit atoll atoq \
 	sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
 	fwrite_unlocked fprintf_unlocked getrusage nl_langinfo lstat \
-        scandir alphasort gettimeofday
+        scandir alphasort gettimeofday mbstowcs wcswidth
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
 echo "configure:3721: checking for $ac_func" >&5

gcc/configure.in

@@ -688,7 +688,7 @@ AC_HEADER_SYS_WAIT
 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
 		 fcntl.h unistd.h sys/file.h sys/time.h \
 		 sys/resource.h sys/param.h sys/times.h sys/stat.h \
-		 direct.h malloc.h langinfo.h ldfcn.h)
+		 direct.h malloc.h langinfo.h ldfcn.h wchar.h)
 
 # Check for thread headers.
 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
@@ -787,7 +787,7 @@ dnl gcc_AC_C_ENUM_BF_UNSIGNED
 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
 	sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
 	fwrite_unlocked fprintf_unlocked getrusage nl_langinfo lstat \
-        scandir alphasort gettimeofday)
+        scandir alphasort gettimeofday mbstowcs wcswidth)
 
 AC_CHECK_TYPE(ssize_t, int)
 

gcc/cp/ChangeLog

@@ -1,3 +1,8 @@
+2003-04-12  Zack Weinberg  <zack@codesourcery.com>
+
+	* call.c (print_z_candidates): Use gcc_gettext_width, not
+	strlen, to determine how much padding to use.
+
 2003-04-10  Zack Weinberg  <zack@codesourcery.com>
 
 	* decl.c: Update all calls to shadow_warning.

gcc/cp/call.c

@@ -2508,9 +2508,9 @@ print_z_candidates (struct z_candidate *candidates)
   print_z_candidate (str, candidates);
   if (candidates->next)
     {
-      /* Indent successive candidates by the length of the translation of
-	 the above string.  */
-      size_t len = strlen (str) + 1;
+      /* Indent successive candidates by the width of the translation
+	 of the above string.  */
+      size_t len = gcc_gettext_width (str) + 1;
       char *spaces = alloca (len);
       memset (spaces, ' ', len-1);
       spaces[len] = '\0';

gcc/intl.c

@@ -45,4 +45,35 @@ gcc_init_libintl ()
   (void) textdomain ("gcc");
 }
 
+#if defined HAVE_WCHAR_H && defined HAVE_MBSTOWCS && defined HAVE_WCSWIDTH
+#include <wchar.h>
+
+/* Returns the width in columns of MSGSTR, which came from gettext.
+   This is for indenting subsequent output.  */
+
+size_t
+gcc_gettext_width (msgstr)
+     const char *msgstr;
+{
+  size_t nwcs = mbstowcs (0, msgstr, 0);
+  wchar_t *wmsgstr = alloca ((nwcs + 1) * sizeof (wchar_t));
+
+  mbstowcs (wmsgstr, msgstr, nwcs + 1);
+  return wcswidth (wmsgstr, nwcs);
+}
+
+#else  /* no wcswidth */
+
+/* We don't have any way of knowing how wide the string is.  Guess
+   the length of the string.  */
+
+size_t
+gcc_gettext_width (msgstr)
+     const char *msgstr;
+{
+  return strlen (msgstr);
+}
+
 #endif
+
+#endif /* ENABLE_NLS */

gcc/intl.h

@@ -39,6 +39,7 @@
 
 #ifdef ENABLE_NLS
 extern void gcc_init_libintl PARAMS ((void));
+extern size_t gcc_gettext_width PARAMS ((const char *));
 #else
 /* Stubs.  */
 # undef textdomain