Bug#276246: w3m's locale parsing should at least see '@euro' modifier

* config.h (HAVE_LANGINFO_CODESET): added
* configure.in (AM_LANGINFO_CODESET): added
* libwc/charset.c: #include <langinfo.h>
       (wc_charset_to_ces): use nl_langinfo(CODESET)
From: Fumitoshi UKAI <ukai@debian.or.jp>

ChangeLog

@@ -1,3 +1,11 @@
+2004-10-14  Fumitoshi UKAI  <ukai@debian.or.jp>
+
+	* Bug#276246: w3m's locale parsing should at least see '@euro' modifier
+	* config.h (HAVE_LANGINFO_CODESET): added
+	* configure.in (AM_LANGINFO_CODESET): added
+	* libwc/charset.c: #include <langinfo.h>
+	       (wc_charset_to_ces): use nl_langinfo(CODESET)
+
 2004-09-30  Hiroyuki Ito <ZXB01226@nifty.com>
 
 	* [w3m-dev 04108] PIPE_BUF
@@ -8580,4 +8588,4 @@ a	* [w3m-dev 03276] compile error on EWS4800
 	* release-0-2-1
 	* import w3m-0.2.1
 
-$Id: ChangeLog,v 1.938 2004/09/29 15:44:03 ukai Exp $
+$Id: ChangeLog,v 1.939 2004/10/13 16:52:49 ukai Exp $

config.h.in

@@ -142,6 +142,7 @@ typedef long clen_t;
 #undef HAVE_CHDIR
 #undef HAVE_SETPGRP
 #undef HAVE_SETLOCALE
+#undef HAVE_LANGINFO_CODESET
 
 #undef SETPGRP_VOID
 #ifdef SETPGRP_VOID

configure

@@ -10007,6 +10007,69 @@ _ACEOF
 fi
 
 
+  echo "$as_me:$LINENO: checking for nl_langinfo and CODESET" >&5
+echo $ECHO_N "checking for nl_langinfo and CODESET... $ECHO_C" >&6
+if test "${am_cv_langinfo_codeset+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <langinfo.h>
+int
+main ()
+{
+char* cs = nl_langinfo(CODESET);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  am_cv_langinfo_codeset=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+am_cv_langinfo_codeset=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $am_cv_langinfo_codeset" >&5
+echo "${ECHO_T}$am_cv_langinfo_codeset" >&6
+  if test $am_cv_langinfo_codeset = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_LANGINFO_CODESET 1
+_ACEOF
+
+  fi
+
+
 echo "$as_me:$LINENO: checking for sys_errlist" >&5
 echo $ECHO_N "checking for sys_errlist... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF

configure.in

@@ -148,6 +148,7 @@ AC_CHECK_FUNCS(strcasecmp strcasestr strchr memcpy strerror bcopy setpgrp chdir
 AC_FUNC_STRFTIME
 AC_FUNC_WAIT3
 AC_FUNC_SETPGRP
+AM_LANGINFO_CODESET
 AC_W3M_SYS_ERRLIST
 AC_W3M_SIGSETJMP
 AC_W3M_SIGNAL

libwc/charset.c

@@ -6,6 +6,10 @@
 
 #include "wc.h"
 
+#ifdef HAVE_LANGINFO_CODESET
+#include <langinfo.h>
+#endif
+
 wc_locale WcLocale = 0;
 
 static struct {
@@ -369,6 +373,12 @@ wc_locale_to_ces(char *locale)
 
     if (*p == 'C' && *(p+1) == '\0')
 	return WC_CES_US_ASCII;
+#ifdef HAVE_LANGINFO_CODESET
+    {
+	char *cs = nl_langinfo(CODESET);
+	return wc_charset_to_ces(cs);
+    }
+#endif
     for (n = 0; *p && *p != '.' && n < 5; p++) {
 	if ((unsigned char)*p > 0x20)
 	    buf[n++] = tolower(*p);