A first step towards localization.

Makefile

@@ -21,6 +21,7 @@ OBJECTS  = $(patsubst %.c, %.o,  $(SOURCE))
 DOBJECTS = $(patsubst %.c, %.do, $(SOURCE))
 
 all: options ${PROJECT}
+	$(MAKE) -C po
 
 options:
 	@echo ${PROJECT} build options:
@@ -60,6 +61,7 @@ clean:
 		${DOBJECTS} ${PROJECT}-debug .depend ${PROJECT}.pc doc version.h \
 		*gcda *gcno $(PROJECT).info gcov
 	$(QUIET)make -C tests clean
+	$(QUIET)make -C po clean
 
 ${PROJECT}-debug: ${DOBJECTS}
 	$(ECHO) CC -o $@
@@ -89,12 +91,14 @@ test: ${OBJECTS}
 dist: clean
 	$(QUIET)mkdir -p ${PROJECT}-${VERSION}
 	$(QUIET)mkdir -p ${PROJECT}-${VERSION}/tests
+	$(QUIET)mkdir -p ${PROJECT}-${VERSION}/po
 	$(QUIET)cp LICENSE Makefile config.mk common.mk README AUTHORS Doxyfile \
 			${PROJECT}.1.rst ${PROJECT}rc.5.rst ${OSOURCE} ${HEADER} ${PROJECT}.pc.in \
 			${PROJECT}.desktop version.h.in database-*.c \
 			${PROJECT}-${VERSION}
 	$(QUIET)cp tests/Makefile tests/config.mk tests/*.c \
 			${PROJECT}-${VERSION}/tests
+	$(QUIET)cp po/Makefile po/*.po ${PROJECT}-${VERSION}/po
 	$(QUIET)tar -cf ${PROJECT}-${VERSION}.tar ${PROJECT}-${VERSION}
 	$(QUIET)gzip ${PROJECT}-${VERSION}.tar
 	$(QUIET)rm -rf ${PROJECT}-${VERSION}
@@ -134,6 +138,7 @@ install: all ${PROJECT}.pc
 	$(ECHO) installing pkgconfig file
 	$(QUIET)mkdir -p ${DESTDIR}${PREFIX}/lib/pkgconfig
 	$(QUIET)cp -f ${PROJECT}.pc ${DESTDIR}${PREFIX}/lib/pkgconfig
+	$(MAKE) -C po install
 
 uninstall:
 	$(ECHO) removing executable file

config.mk

@@ -14,12 +14,12 @@ ZATHURA_GTK_VERSION ?= 2
 PREFIX ?= /usr
 MANPREFIX ?= ${PREFIX}/share/man
 DESKTOPPREFIX ?= ${PREFIX}/share/applications
-# list of : seperated values
+# plugin directory
 PLUGINDIR ?= ${PREFIX}/lib/zathura
+# locale directory
+LOCALEDIR ?= ${PREFIX}/share/locale
 
 # libs
-
-# set this to 0 if you don't need to link against dl
 GTK_INC ?= $(shell pkg-config --cflags gtk+-${ZATHURA_GTK_VERSION}.0)
 GTK_LIB ?= $(shell pkg-config --libs gtk+-${ZATHURA_GTK_VERSION}.0 gthread-2.0)
 
@@ -37,7 +37,7 @@ LIBS = ${GIRARA_LIB} ${GTK_LIB} ${DL_LIB} -lpthread -lm
 
 # flags
 CFLAGS += -std=c99 -pedantic -Wall -Wno-format-zero-length -Wextra $(INCS)
-CPPFLAGS += -DZATHURA_PLUGINDIR=\"${PLUGINDIR}\"
+CPPFLAGS += -DZATHURA_PLUGINDIR=\"${PLUGINDIR}\" -DGETTEXT_PACKAGE=\"${PROJECT}\" -DLOCALEDIR=\"${LOCALEDIR}\"
 
 # debug
 DFLAGS ?= -g

main.c

@@ -2,12 +2,18 @@
 
 #include <stdio.h>
 #include <glib/gstdio.h>
+#include <glib/gi18n.h>
 
 #include "zathura.h"
 
 /* main function */
 int main(int argc, char* argv[])
 {
+  setlocale(LC_ALL, "");
+  bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
+  bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
+  textdomain(GETTEXT_PACKAGE);
+
   g_thread_init(NULL);
   gdk_threads_init();
   gtk_init(&argc, &argv);

po/.gitignore

+POTFILES.in*
+*.mo

po/Makefile

+# See LICENSE file for license and copyright information
+
+PROJECT = zathura
+CATALOGS = $(wildcard *.po)
+MOS = $(patsubst %.po, %/LC_MESSAGES/${PROJECT}.mo, $(CATALOGS))
+
+include ../config.mk
+include ../common.mk
+
+all: ${MOS}
+
+clean:
+	rm -rf POTFILES.in POTFILES.in.tmp $(patsubst %.po, %, $(CATALOGS))
+
+POTFILES.in: $(wildcard ../*.c)
+	$(QUIET) set -e && rm -f $@.tmp && touch $@.tmp && \
+	for f in $(^F) ; do \
+		echo $$f >> $@.tmp ; \
+	done && \
+	mv $@.tmp $@
+
+${PROJECT}.pot: POTFILES.in
+	$(ECHO) regenerate ${PROJECT}.pot
+	$(QUIET)intltool-update --pot --gettext-package=${PROJECT}
+
+%.po: ${PROJECT}.pot
+	$(ECHO) updating language $(shell echo $@ | sed 's/\.po//')
+	$(QUIET)intltool-update --dist --gettext-package=${PROJECT} $(shell echo $@ | sed 's/\.po//')
+
+%/LC_MESSAGES/${PROJECT}.mo: %.po
+	@mkdir -p $(@D)
+	$(ECHO) msgfmt $(shell echo $< | sed 's/\.po//')
+	$(QUIET)msgfmt $< -o $@ -f
+
+install: ${MOS}
+	$(ECHO) installing translations
+	$(QUIET)set -e && for f in $^ ; do \
+		mkdir -p $(DESTDIR)$(LOCALEDIR)/`dirname $$f`; \
+		install -m 644 $$f $(DESTDIR)$(LOCALEDIR)/`dirname $$f` ; \
+	done

po/de_DE.po

+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2012-03-04 18:29+0100\n"
+"PO-Revision-Date: 2012-03-04 17:77+0100\n"
+"Last-Translator: Sebastian Ramacher <s.ramacher@gmx.at>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: ../zathura.c:52
+msgid "Reparents to window specified by xid"
+msgstr ""
+
+#: ../zathura.c:53
+msgid "Path to the config directory"
+msgstr "Pfad des Konfigurationsverzeichnisses"
+
+#: ../zathura.c:54
+msgid "Path to the data directory"
+msgstr ""
+
+#: ../zathura.c:55
+msgid "Path to the directories containing plugins"
+msgstr ""
+
+#: ../zathura.c:56
+msgid "Fork into the background"
+msgstr ""

po/zathura.pot

+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2012-03-04 18:29+0100\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: ../zathura.c:52
+msgid "Reparents to window specified by xid"
+msgstr ""
+
+#: ../zathura.c:53
+msgid "Path to the config directory"
+msgstr ""
+
+#: ../zathura.c:54
+msgid "Path to the data directory"
+msgstr ""
+
+#: ../zathura.c:55
+msgid "Path to the directories containing plugins"
+msgstr ""
+
+#: ../zathura.c:56
+msgid "Fork into the background"
+msgstr ""

zathura.c

@@ -13,6 +13,7 @@
 #include <girara/statusbar.h>
 #include <girara/settings.h>
 #include <glib/gstdio.h>
+#include <glib/gi18n.h>
 
 #include "bookmarks.h"
 #include "callbacks.h"
@@ -48,11 +49,11 @@ zathura_init(int argc, char* argv[])
   bool forkback = false;
   GOptionEntry entries[] =
   {
-    { "reparent",    'e', 0, G_OPTION_ARG_INT,      &embed,       "Reparents to window specified by xid",       "xid"  },
-    { "config-dir",  'c', 0, G_OPTION_ARG_FILENAME, &config_dir,  "Path to the config directory",               "path" },
-    { "data-dir",    'd', 0, G_OPTION_ARG_FILENAME, &data_dir,    "Path to the data directory",                 "path" },
-    { "plugins-dir", 'p', 0, G_OPTION_ARG_STRING,   &plugin_path, "Path to the directories containing plugins", "path" },
-    { "fork",        '\0', 0, G_OPTION_ARG_NONE,    &forkback,    "Fork into the background"                  , NULL },
+    { "reparent",    'e', 0, G_OPTION_ARG_INT,      &embed,       _("Reparents to window specified by xid"),       "xid"  },
+    { "config-dir",  'c', 0, G_OPTION_ARG_FILENAME, &config_dir,  _("Path to the config directory"),               "path" },
+    { "data-dir",    'd', 0, G_OPTION_ARG_FILENAME, &data_dir,    _("Path to the data directory"),                 "path" },
+    { "plugins-dir", 'p', 0, G_OPTION_ARG_STRING,   &plugin_path, _("Path to the directories containing plugins"), "path" },
+    { "fork",        '\0', 0, G_OPTION_ARG_NONE,    &forkback,    _("Fork into the background")                  , NULL },
     { NULL, '\0', 0, 0, NULL, NULL, NULL }
   };