Merge branch 'ab/enable-i18n'

* ab/enable-i18n:
  i18n: add infrastructure for translating Git with gettext

Conflicts:
	Makefile

1 files changed, 77 insertions, 4 deletions

diff --git a/Makefile b/Makefile
index 898278d..9470a10 100644
--- a/Makefile
+++ b/Makefile
@@ -43,6 +43,22 @@ all::
 # Define EXPATDIR=/foo/bar if your expat header and library files are in
 # /foo/bar/include and /foo/bar/lib directories.
 #
+# Define NO_GETTEXT if you don't want Git output to be translated.
+# A translated Git requires GNU libintl or another gettext implementation,
+# plus libintl-perl at runtime.
+#
+# Define HAVE_LIBCHARSET_H if you haven't set NO_GETTEXT and you can't
+# trust the langinfo.h's nl_langinfo(CODESET) function to return the
+# current character set. GNU and Solaris have a nl_langinfo(CODESET),
+# FreeBSD can use either, but MinGW and some others need to use
+# libcharset.h's locale_charset() instead.
+#
+# Define LIBC_CONTAINS_LIBINTL if your gettext implementation doesn't
+# need -lintl when linking.
+#
+# Define NO_MSGFMT_EXTENDED_OPTIONS if your implementation of msgfmt
+# doesn't support GNU extensions like --check and --statistics
+#
 # Define HAVE_PATHS_H if you have paths.h and want to use the default PATH
 # it specifies.
 #
@@ -309,6 +325,7 @@ gitexecdir = libexec/git-core
 mergetoolsdir = $(gitexecdir)/mergetools
 sharedir = $(prefix)/share
 gitwebdir = $(sharedir)/gitweb
+localedir = $(sharedir)/locale
 template_dir = share/git-core/templates
 htmldir = share/doc/git-doc
 ETC_GITCONFIG = $(sysconfdir)/gitconfig
@@ -317,7 +334,7 @@ lib = lib
 # DESTDIR=
 pathsep = :
 
-export prefix bindir sharedir sysconfdir gitwebdir
+export prefix bindir sharedir sysconfdir gitwebdir localedir
 
 CC = gcc
 AR = ar
@@ -330,6 +347,7 @@ RPMBUILD = rpmbuild
 TCL_PATH = tclsh
 TCLTK_PATH = wish
 XGETTEXT = xgettext
+MSGFMT = msgfmt
 PTHREAD_LIBS = -lpthread
 PTHREAD_CFLAGS =
 GCOV = gcov
@@ -640,6 +658,7 @@ LIB_OBJS += environment.o
 LIB_OBJS += exec_cmd.o
 LIB_OBJS += fsck.o
 LIB_OBJS += gpg-interface.o
+LIB_OBJS += gettext.o
 LIB_OBJS += graph.o
 LIB_OBJS += grep.o
 LIB_OBJS += hash.o
@@ -836,12 +855,14 @@ ifeq ($(uname_S),Linux)
 	NO_STRLCPY = YesPlease
 	NO_MKSTEMPS = YesPlease
 	HAVE_PATHS_H = YesPlease
+	LIBC_CONTAINS_LIBINTL = YesPlease
 endif
 ifeq ($(uname_S),GNU/kFreeBSD)
 	NO_STRLCPY = YesPlease
 	NO_MKSTEMPS = YesPlease
 	HAVE_PATHS_H = YesPlease
 	DIR_HAS_BSD_GROUP_SEMANTICS = YesPlease
+	LIBC_CONTAINS_LIBINTL = YesPlease
 endif
 ifeq ($(uname_S),UnixWare)
 	CC = cc
@@ -908,6 +929,7 @@ ifeq ($(uname_S),SunOS)
 	NO_MKSTEMPS = YesPlease
 	NO_REGEX = YesPlease
 	NO_FNMATCH_CASEFOLD = YesPlease
+	NO_MSGFMT_EXTENDED_OPTIONS = YesPlease
 	ifeq ($(uname_R),5.6)
 		SOCKLEN_T = int
 		NO_HSTRERROR = YesPlease
@@ -1031,6 +1053,7 @@ ifeq ($(uname_S),GNU)
 	NO_STRLCPY=YesPlease
 	NO_MKSTEMPS = YesPlease
 	HAVE_PATHS_H = YesPlease
+	LIBC_CONTAINS_LIBINTL = YesPlease
 endif
 ifeq ($(uname_S),IRIX)
 	NO_SETENV = YesPlease
@@ -1249,6 +1272,7 @@ ifneq (,$(wildcard ../THIS_IS_MSYSGIT))
 	EXTLIBS += /mingw/lib/libz.a
 	NO_R_TO_GCC_LINKER = YesPlease
 	INTERNAL_QSORT = YesPlease
+	HAVE_LIBCHARSET_H = YesPlease
 else
 	NO_CURL = YesPlease
 endif
@@ -1437,6 +1461,11 @@ endif
 ifdef NEEDS_LIBGEN
 	EXTLIBS += -lgen
 endif
+ifndef NO_GETTEXT
+ifndef LIBC_CONTAINS_LIBINTL
+	EXTLIBS += -lintl
+endif
+endif
 ifdef NEEDS_SOCKET
 	EXTLIBS += -lsocket
 endif
@@ -1479,9 +1508,11 @@ ifdef NO_SYMLINK_HEAD
 	BASIC_CFLAGS += -DNO_SYMLINK_HEAD
 endif
 ifdef GETTEXT_POISON
-	LIB_OBJS += gettext.o
 	BASIC_CFLAGS += -DGETTEXT_POISON
 endif
+ifdef NO_GETTEXT
+	BASIC_CFLAGS += -DNO_GETTEXT
+endif
 ifdef NO_STRCASESTR
 	COMPAT_CFLAGS += -DNO_STRCASESTR
 	COMPAT_OBJS += compat/strcasestr.o
@@ -1650,6 +1681,10 @@ ifdef HAVE_PATHS_H
 	BASIC_CFLAGS += -DHAVE_PATHS_H
 endif
 
+ifdef HAVE_LIBCHARSET_H
+	BASIC_CFLAGS += -DHAVE_LIBCHARSET_H
+endif
+
 ifdef DIR_HAS_BSD_GROUP_SEMANTICS
 	COMPAT_CFLAGS += -DDIR_HAS_BSD_GROUP_SEMANTICS
 endif
@@ -1670,6 +1705,10 @@ ifdef GIT_TEST_CMP_USE_COPIED_CONTEXT
 	export GIT_TEST_CMP_USE_COPIED_CONTEXT
 endif
 
+ifndef NO_MSGFMT_EXTENDED_OPTIONS
+	MSGFMT += --check --statistics
+endif
+
 ifeq ($(TCLTK_PATH),)
 NO_TCLTK=NoThanks
 endif
@@ -1700,6 +1739,7 @@ ifndef V
 	QUIET_GEN      = @echo '   ' GEN $@;
 	QUIET_LNCP     = @echo '   ' LN/CP $@;
 	QUIET_XGETTEXT = @echo '   ' XGETTEXT $@;
+	QUIET_MSGFMT   = @echo '   ' MSGFMT $@;
 	QUIET_GCOV     = @echo '   ' GCOV $@;
 	QUIET_SP       = @echo '   ' SP $<;
 	QUIET_SUBDIR0  = +@subdir=
@@ -1726,6 +1766,7 @@ bindir_SQ = $(subst ','\'',$(bindir))
 bindir_relative_SQ = $(subst ','\'',$(bindir_relative))
 mandir_SQ = $(subst ','\'',$(mandir))
 infodir_SQ = $(subst ','\'',$(infodir))
+localedir_SQ = $(subst ','\'',$(localedir))
 gitexecdir_SQ = $(subst ','\'',$(gitexecdir))
 template_dir_SQ = $(subst ','\'',$(template_dir))
 htmldir_SQ = $(subst ','\'',$(htmldir))
@@ -1781,7 +1822,7 @@ ifndef NO_TCLTK
 	$(QUIET_SUBDIR0)gitk-git $(QUIET_SUBDIR1) all
 endif
 ifndef NO_PERL
-	$(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' all
+	$(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' localedir='$(localedir_SQ)' all
 endif
 ifndef NO_PYTHON
 	$(QUIET_SUBDIR0)git_remote_helpers $(QUIET_SUBDIR1) PYTHON_PATH='$(PYTHON_PATH_SQ)' prefix='$(prefix_SQ)' all
@@ -1831,6 +1872,7 @@ sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
     -e 's|@SHELL_PATH@|$(SHELL_PATH_SQ)|' \
     -e 's|@@DIFF@@|$(DIFF_SQ)|' \
     -e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
+    -e 's|@@LOCALEDIR@@|$(localedir_SQ)|g' \
     -e 's/@@NO_CURL@@/$(NO_CURL)/g' \
     -e $(BROKEN_PATH_FIX) \
     $@.sh >$@+
@@ -2083,6 +2125,9 @@ config.sp config.s config.o: EXTRA_CPPFLAGS = \
 attr.sp attr.s attr.o: EXTRA_CPPFLAGS = \
 	-DETC_GITATTRIBUTES='"$(ETC_GITATTRIBUTES_SQ)"'
 
+gettext.sp gettext.s gettext.o: EXTRA_CPPFLAGS = \
+	-DGIT_LOCALE_PATH='"$(localedir_SQ)"'
+
 http.sp http.s http.o: EXTRA_CPPFLAGS = \
 	-DGIT_HTTP_USER_AGENT='"git/$(GIT_VERSION)"'
 
@@ -2156,17 +2201,37 @@ XGETTEXT_FLAGS = \
 XGETTEXT_FLAGS_C = $(XGETTEXT_FLAGS) --language=C \
 	--keyword=_ --keyword=N_ --keyword="Q_:1,2"
 XGETTEXT_FLAGS_SH = $(XGETTEXT_FLAGS) --language=Shell
+XGETTEXT_FLAGS_PERL = $(XGETTEXT_FLAGS) --keyword=__ --language=Perl
 LOCALIZED_C := $(C_OBJ:o=c)
 LOCALIZED_SH := $(SCRIPT_SH)
+LOCALIZED_PERL := $(SCRIPT_PERL)
+
+ifdef XGETTEXT_INCLUDE_TESTS
+LOCALIZED_C += t/t0200/test.c
+LOCALIZED_SH += t/t0200/test.sh
+LOCALIZED_PERL += t/t0200/test.perl
+endif
 
 po/git.pot: $(LOCALIZED_C)
 	$(QUIET_XGETTEXT)$(XGETTEXT) -o$@+ $(XGETTEXT_FLAGS_C) $(LOCALIZED_C)
 	$(QUIET_XGETTEXT)$(XGETTEXT) -o$@+ --join-existing $(XGETTEXT_FLAGS_SH) \
 		$(LOCALIZED_SH)
+	$(QUIET_XGETTEXT)$(XGETTEXT) -o$@+ --join-existing $(XGETTEXT_FLAGS_PERL) \
+		$(LOCALIZED_PERL)
 	mv $@+ $@
 
 pot: po/git.pot
 
+POFILES := $(wildcard po/*.po)
+MOFILES := $(patsubst po/%.po,po/build/locale/%/LC_MESSAGES/git.mo,$(POFILES))
+
+ifndef NO_GETTEXT
+all:: $(MOFILES)
+endif
+
+po/build/locale/%/LC_MESSAGES/git.mo: po/%.po
+	$(QUIET_MSGFMT)mkdir -p $(dir $@) && $(MSGFMT) -o $@ $<
+
 FIND_SOURCE_FILES = ( git ls-files '*.[hcS]' 2>/dev/null || \
 			$(FIND) . \( -name .git -type d -prune \) \
 				-o \( -name '*.[hcS]' -type f -print \) )
@@ -2185,7 +2250,8 @@ cscope:
 
 ### Detect prefix changes
 TRACK_CFLAGS = $(CC):$(subst ','\'',$(ALL_CFLAGS)):\
-             $(bindir_SQ):$(gitexecdir_SQ):$(template_dir_SQ):$(prefix_SQ)
+             $(bindir_SQ):$(gitexecdir_SQ):$(template_dir_SQ):$(prefix_SQ):\
+             $(localedir_SQ)
 
 GIT-CFLAGS: FORCE
 	@FLAGS='$(TRACK_CFLAGS)'; \
@@ -2222,6 +2288,7 @@ endif
 ifdef GIT_TEST_CMP_USE_COPIED_CONTEXT
 	@echo GIT_TEST_CMP_USE_COPIED_CONTEXT=YesPlease >>$@
 endif
+	@echo NO_GETTEXT=\''$(subst ','\'',$(subst ','\'',$(NO_GETTEXT)))'\' >>$@
 	@echo GETTEXT_POISON=\''$(subst ','\'',$(subst ','\'',$(GETTEXT_POISON)))'\' >>$@
 	@echo NO_UNIX_SOCKETS=\''$(subst ','\'',$(subst ','\'',$(NO_UNIX_SOCKETS)))'\' >>$@
 
@@ -2338,6 +2405,11 @@ install: all
 	$(MAKE) -C templates DESTDIR='$(DESTDIR_SQ)' install
 	$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(mergetools_instdir_SQ)'
 	$(INSTALL) -m 644 mergetools/* '$(DESTDIR_SQ)$(mergetools_instdir_SQ)'
+ifndef NO_GETTEXT
+	$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(localedir_SQ)'
+	(cd po/build/locale && $(TAR) cf - .) | \
+	(cd '$(DESTDIR_SQ)$(localedir_SQ)' && umask 022 && $(TAR) xof -)
+endif
 ifndef NO_PERL
 	$(MAKE) -C perl prefix='$(prefix_SQ)' DESTDIR='$(DESTDIR_SQ)' install
 	$(MAKE) -C gitweb install
@@ -2474,6 +2546,7 @@ clean:
 	$(RM) $(TEST_PROGRAMS)
 	$(RM) -r bin-wrappers
 	$(RM) -r $(dep_dirs)
+	$(RM) -r po/build/
 	$(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo common-cmds.h $(ETAGS_TARGET) tags cscope*
 	$(RM) -r autom4te.cache
 	$(RM) config.log config.mak.autogen config.mak.append config.status config.cache