Add framework for translating ZNC to different languages

cmake/translation.cmake

@@ -0,0 +1,75 @@
+#
+# Copyright (C) 2004-2016 ZNC, see the NOTICE file for details.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+include(CMakeParseArguments)
+function(translation)
+	cmake_parse_arguments(arg "" "FULL;SHORT" "SOURCES;TMPLDIRS" ${ARGN})
+	set(short "${arg_SHORT}")
+	file(GLOB all_po "${short}.*.po")
+
+	if(XGETTEXT_EXECUTABLE)
+		set(params)
+		foreach(i ${arg_SOURCES})
+			list(APPEND params "--explicit_sources=${i}")
+		endforeach()
+		foreach(i ${arg_TMPLDIRS})
+			list(APPEND params "--tmpl_dirs=${i}")
+		endforeach()
+		add_custom_target("translation_${short}"
+			COMMAND "${PROJECT_SOURCE_DIR}/translation_pot.py"
+			"--include_dir=${CMAKE_CURRENT_SOURCE_DIR}/.."
+			"--strip_prefix=${PROJECT_SOURCE_DIR}/"
+			"--tmp_prefix=${CMAKE_CURRENT_BINARY_DIR}/${short}"
+			"--output=${CMAKE_CURRENT_SOURCE_DIR}/${short}.pot"
+			${params}
+			VERBATIM)
+		foreach(one_po ${all_po})
+			add_custom_command(TARGET "translation_${short}" POST_BUILD
+				COMMAND "${GETTEXT_MSGMERGE_EXECUTABLE}"
+				--update --quiet --backup=none "${one_po}" "${short}.pot"
+				WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+				VERBATIM)
+		endforeach()
+		add_dependencies(translation "translation_${short}")
+	endif()
+
+	if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${short}.pot")
+		return()
+	endif()
+
+	znc_add_custom_target("po_${short}")
+	foreach(one_po ${all_po})
+		get_filename_component(longext "${one_po}" EXT)
+		if(NOT longext MATCHES "^\\.([a-zA-Z_]+)\\.po$")
+			message(WARNING "Unrecognized translation file ${one_po}")
+			continue()
+		endif()
+		set(lang "${CMAKE_MATCH_1}")
+
+		add_custom_command(OUTPUT "${short}.${lang}.gmo"
+			COMMAND "${GETTEXT_MSGFMT_EXECUTABLE}"
+			-D "${CMAKE_CURRENT_SOURCE_DIR}"
+			-o "${short}.${lang}.gmo"
+			"${short}.${lang}.po"
+			DEPENDS "${short}.${lang}.po"
+			VERBATIM)
+		add_custom_target("po_${short}_${lang}" DEPENDS "${short}.${lang}.gmo")
+		install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${short}.${lang}.gmo"
+			DESTINATION "${CMAKE_INSTALL_LOCALEDIR}/${lang}/LC_MESSAGES"
+			RENAME "${arg_FULL}.mo")
+		add_dependencies("po_${short}" "po_${short}_${lang}")
+	endforeach()
+endfunction()

cmake/translation_tmpl.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2004-2016 ZNC, see the NOTICE file for details.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import argparse
+import glob
+import os
+import re
+
+parser = argparse.ArgumentParser(
+        description='Extract translateable strings from .tmpl files')
+parser.add_argument('--directory', action='store')
+parser.add_argument('--output', action='store')
+args = parser.parse_args()
+
+pattern = re.compile(r'<\?\s*(?:FORMAT|(PLURAL))\s+(?:CTX="([^"]+?)"\s+)?"([^"]+?)"(?(1)\s+"([^"]+?)"|).*?\?>')
+
+result = []
+
+for fname in glob.iglob(args.directory + '/*.tmpl'):
+    fbase = os.path.basename(fname)
+    with open(fname) as f:
+        for linenum, line in enumerate(f):
+            for x in pattern.finditer(line):
+                text, plural, context = x.group(3), x.group(4), x.group(2)
+                result.append('#: {}:{}'.format(fbase, linenum + 1))
+                if context:
+                    result.append('msgctxt "{}"'.format(context))
+                result.append('msgid "{}"'.format(text))
+                if plural:
+                    result.append('msgid_plural "{}"'.format(plural))
+                    result.append('msgstr[0] ""')
+                    result.append('msgstr[1] ""')
+                else:
+                    result.append('msgstr ""')
+                result.append('')
+
+if result:
+    with open(args.output, 'w') as f:
+        for line in result:
+            print(line, file=f)