build-sys: add NLS support

Add GNU gettext internationalization and localization support.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

8 files changed, 224 insertions, 7 deletions

diff --git a/.gitignore b/.gitignore
index 2e20e98..209c4e7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,9 @@
+*.lo
+*.o
+*.so
+.deps
+.libs
+ABOUT-NLS
 aclocal.m4
 autom4te.cache
 compile
@@ -5,24 +11,22 @@ config.guess
 config.h
 config.h.in
 config.log
+config.rpath
 config.status
 config.sub
 configure
 depcomp
-.deps
-.libs
 free
 INSTALL
 install-sh
 kill
 libtool
-*.lo
 ltmain.sh
 m4/
 Makefile
 Makefile.in
 missing
-*.o
+mkinstalldirs
 pgrep
 pkill
 pmap
@@ -39,7 +43,6 @@ pwdx
 skill
 slabtop
 snice
-*.so
 stamp-h1
 sysctl
 tload
diff --git a/Makefile.am b/Makefile.am
index 3c5be85..4de7863 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,11 @@
-AM_CPPFLAGS = -include $(top_builddir)/config.h
+AM_CPPFLAGS = -include $(top_builddir)/config.h -I$(top_srcdir)/include
 
 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = proc ps testsuite
+SUBDIRS = \
+	po \
+	proc \
+	ps \
+	testsuite
 
 AM_CFLAGS = -Iproc
 AM_LDFLAGS = ./proc/libprocfs.la
diff --git a/autogen.sh b/autogen.sh
index b42f57b..4e3d499 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -54,6 +54,13 @@ echo "   libtoolize: $(libtoolize --version | head -1)"
 rm -rf autom4te.cache
 
 set -e
+po/update-potfiles
+autopoint --force $AP_OPTS
+if ! grep -q datarootdir po/Makefile.in.in; then
+	echo autopoint does not honor dataroot variable, patching.
+	sed -i -e 's/^datadir *=\(.*\)/datarootdir = @datarootdir@\
+datadir = @datadir@/g' po/Makefile.in.in
+fi
 libtoolize --force ${LT_OPTS}
 aclocal -I m4 ${AL_OPTS}
 autoconf ${AC_OPTS}
diff --git a/configure.ac b/configure.ac
index 63a3c37..0802418 100644
--- a/configure.ac
+++ b/configure.ac
@@ -101,6 +101,32 @@ AC_CHECK_FUNCS([\
 	wcwidth
 ])
 
+usrbin_execdir='${exec_prefix}/usr/bin'
+AC_SUBST([usrbin_execdir])
+
+AM_GNU_GETTEXT_VERSION([0.14.1])
+AM_GNU_GETTEXT([external])
+dnl if test -d "$srcdir/po"
+dnl then
+dnl	ALL_LINGUAS=`cd $srcdir/po > /dev/null && echo *.po | sed 's/\.po//g'`
+dnl else
+dnl	ALL_LINGUAS="af am ar as be bg bn_IN bn ca cs cy da de el en_GB es et eu_ES fa fi fr gl gu he hi hr hu hy id is it ja ka kn ko ku lo lt lv mk ml mr ms my nb nl nn no nso or pa pl pt_BR pt ro ru si sk sl sq sr@Latn sr sv ta te th tr uk ur vi zh_CN zh_TW zu"
+dnl fi
+
+dnl UTIL_CHECK_LIB(LIBRARY, FUNCTION, [VARSUFFIX = $1]))
+dnl The VARSUFFIX is optional and overrides the default behaviour. For example:
+dnl     UTIL_CHECK_LIB(yyy, func, xxx) generates have_xxx and HAVE_LIBXXX
+dnl     UTIL_CHECK_LIB(yyy, func)      generates have_yyy and HAVE_LIBYYY
+dnl ---------------------------------
+AC_DEFUN([UTIL_CHECK_LIB], [
+  m4_define([suffix], m4_default([$3],$1))
+  [have_]suffix=yes
+  m4_ifdef([$3],
+    [AC_CHECK_LIB([$1], [$2], [AC_DEFINE(AS_TR_CPP([HAVE_LIB]suffix), 1)], [[have_]suffix=no])],
+    [AC_CHECK_LIB([$1], [$2], [], [[have_]suffix=no])])
+  AM_CONDITIONAL(AS_TR_CPP([HAVE_]suffix), [test [$have_]suffix = yes])
+])
+
 AC_ARG_WITH([ncurses],
   AS_HELP_STRING([--without-ncurses], [build only applications not needing ncurses]),
   [with_ncurses=no], [with_ncurses=yes]
@@ -168,6 +194,7 @@ AC_SUBST(DEJAGNU)
 
 AC_CONFIG_FILES([
 Makefile
+po/Makefile.in
 proc/Makefile
 proc/libprocfs.pc
 ps/Makefile
diff --git a/include/nls.h b/include/nls.h
new file mode 100644
index 0000000..be2114e
--- /dev/null
+++ b/include/nls.h
@@ -0,0 +1,106 @@
+#ifndef PROCPS_NG_NLS_H
+#define PROCPS_NG_NLS_H
+
+#ifndef LOCALEDIR
+#define LOCALEDIR "/usr/share/locale"
+#endif
+
+#ifdef HAVE_LOCALE_H
+# include <locale.h>
+#else
+# undef setlocale
+# define setlocale(Category, Locale) /* empty */
+#endif
+
+#ifdef ENABLE_NLS
+# include <libintl.h>
+# define _(Text) gettext (Text)
+# ifdef gettext_noop
+#  define N_(String) gettext_noop (String)
+# else
+#  define N_(String) (String)
+# endif
+# define P_(Singular, Plural, n) ngettext (Singular, Plural, n)
+#else
+# undef bindtextdomain
+# define bindtextdomain(Domain, Directory) /* empty */
+# undef textdomain
+# define textdomain(Domain) /* empty */
+# define _(Text) (Text)
+# define N_(Text) (Text)
+# define P_(Singular, Plural, n) ((n) == 1 ? (Singular) : (Plural))
+#endif /* ENABLE_NLS */
+
+#ifdef HAVE_LANGINFO_H
+# include <langinfo.h>
+#else
+
+typedef int nl_item;
+extern char *langinfo_fallback(nl_item item);
+
+# define nl_langinfo	langinfo_fallback
+
+enum {
+	CODESET = 1,
+	RADIXCHAR,
+	THOUSEP,
+	D_T_FMT,
+	D_FMT,
+	T_FMT,
+	T_FMT_AMPM,
+	AM_STR,
+	PM_STR,
+
+	DAY_1,
+	DAY_2,
+	DAY_3,
+	DAY_4,
+	DAY_5,
+	DAY_6,
+	DAY_7,
+
+	ABDAY_1,
+	ABDAY_2,
+	ABDAY_3,
+	ABDAY_4,
+	ABDAY_5,
+	ABDAY_6,
+	ABDAY_7,
+
+	MON_1,
+	MON_2,
+	MON_3,
+	MON_4,
+	MON_5,
+	MON_6,
+	MON_7,
+	MON_8,
+	MON_9,
+	MON_10,
+	MON_11,
+	MON_12,
+
+	ABMON_1,
+	ABMON_2,
+	ABMON_3,
+	ABMON_4,
+	ABMON_5,
+	ABMON_6,
+	ABMON_7,
+	ABMON_8,
+	ABMON_9,
+	ABMON_10,
+	ABMON_11,
+	ABMON_12,
+
+	ERA_D_FMT,
+	ERA_D_T_FMT,
+	ERA_T_FMT,
+	ALT_DIGITS,
+	CRNCYSTR,
+	YESEXPR,
+	NOEXPR
+};
+
+#endif /* !HAVE_LANGINFO_H */
+#endif /* PROCPS_NG_NLS_H */
diff --git a/po/.gitignore b/po/.gitignore
new file mode 100644
index 0000000..7e029c5
--- /dev/null
+++ b/po/.gitignore
@@ -0,0 +1,18 @@
+*.gmo
+boldquot.sed
+en@boldquot.header
+en@quot.header
+insert-header.sin
+Makefile
+Makefile.in
+Makefile.in.in
+Makefile.in.in~
+Makevars.template
+POTFILES
+POTFILES.in
+procps-ng.pot
+quot.sed
+remove-potcdate.sed
+remove-potcdate.sin
+Rules-quot
+stamp-po
diff --git a/po/Makevars b/po/Makevars
new file mode 100644
index 0000000..daa42e2
--- /dev/null
+++ b/po/Makevars
@@ -0,0 +1,41 @@
+# Makefile variables for PO directory in any package using GNU gettext.
+
+# Usually the message domain is the same as the package name.
+DOMAIN = $(PACKAGE)
+
+# These two variables depend on the location of this directory.
+subdir = po
+top_builddir = ..
+
+# These options get passed to xgettext.
+XGETTEXT_OPTIONS = --keyword=_ --keyword=N_ --keyword=P_:1,2
+
+# This is the copyright holder that gets inserted into the header of the
+# $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding
+# package.  (Note that the msgstr strings, extracted from the package's
+# sources, belong to the copyright holder of the package.)  Translators are
+# expected to transfer the copyright for their translations to this person
+# or entity, or to disclaim their copyright.  The empty string stands for
+# the public domain; in this case the translators are expected to disclaim
+# their copyright.
+COPYRIGHT_HOLDER = Free Software Foundation, Inc.
+
+# This is the email address or URL to which the translators shall report
+# bugs in the untranslated strings:
+# - Strings which are not entire sentences, see the maintainer guidelines
+#   in the GNU gettext documentation, section 'Preparing Strings'.
+# - Strings which use unclear terms or require additional context to be
+#   understood.
+# - Strings which make invalid assumptions about notation of date, time or
+#   money.
+# - Pluralisation problems.
+# - Incorrect English spelling.
+# - Incorrect formatting.
+# It can be your email address, or a mailing list address where translators
+# can write to without being subscribed, or the URL of a web page through
+# which the translators can contact you.
+MSGID_BUGS_ADDRESS = procps@freelists.org
+
+# This is the list of locale categories, beyond LC_MESSAGES, for which the
+# message catalogs shall be used.  It is usually empty.
+EXTRA_LOCALE_CATEGORIES =
diff --git a/po/update-potfiles b/po/update-potfiles
new file mode 100755
index 0000000..70af4ec
--- /dev/null
+++ b/po/update-potfiles
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+if [ ! -f "po/Makevars" ]; then
+	echo "You must run this script in the top-level directory"
+	exit 1
+fi
+
+find . -name '*.c' |
+	sort |
+	sed 's|^./||
+/^contrib/d' > po/POTFILES.in