First pass at setting up translation framework.

translations/CMakeLists.txt

@@ -0,0 +1,97 @@
+#=======================================
+# Translation files
+#=======================================
+# without this a "make clean" would delete the .ts files
+set_directory_properties (PROPERTIES CLEAN_NO_CUSTOM 1)
+
+#
+# gLabels Translation Files
+#
+set (glabels_ts_files
+  glabels_C.ts
+)
+
+#
+# Template Translation Files
+#
+set (templates_ts_files
+  templates_C.ts
+)
+
+qt5_create_translation (glabels_qm_files
+  ${CMAKE_SOURCE_DIR}/glabels ${glabels_ts_files}
+)
+
+qt5_create_translation (templates_qm_files
+  ${CMAKE_CURRENT_BINARY_DIR}/template-strings.h ${templates_ts_files}
+  OPTIONS -locations none
+)
+
+add_custom_target (update_translations DEPENDS ${glabels_qm_files} ${templates_qm_files})
+
+# Add updating translations as a dependency for glabels-qt
+add_dependencies (glabels-qt update_translations)
+
+
+#=======================================
+# Compilation
+#=======================================
+add_compile_options (-std=c++11 -g)
+if (NOT WIN32)
+   add_compile_options (-fPIC)
+endif ()
+
+
+#=======================================
+# XmlStrings utility
+#=======================================
+set (XmlStrings_sources
+  XmlStrings.cpp
+)
+
+add_executable (XmlStrings WIN32
+  ${XmlStrings_sources}
+)
+
+target_link_libraries (XmlStrings
+  ${Qt5Xml_LIBRARIES}
+  ${Qt5Svg_LIBRARIES}
+)
+
+include_directories (
+  ${Qt5Xml_INCLUDE_DIRS}
+  ${Qt5Svg_INCLUDE_DIRS}
+)
+
+
+#=======================================
+# Extract translatable strings from XML
+# template files.
+#=======================================
+# Use absolute locations of XML files
+string (REGEX REPLACE "([^;]+)" "${CMAKE_SOURCE_DIR}/templates/\\1"
+  xml_files "${template_files};${other_db_files}"
+)
+
+add_custom_command (
+  OUTPUT template-strings.h
+  COMMAND XmlStrings ${xml_files} > template-strings.h
+  COMMENT "Extracting template strings."
+  DEPENDS XmlStrings ${xml_files}
+)
+
+set_source_files_properties (template-strings.h PROPERTIES GENERATED TRUE)
+
+add_custom_target (template-strings DEPENDS template-strings.h)
+
+
+#=======================================
+# Subdirectories
+#=======================================
+
+
+#=======================================
+# Install
+#=======================================
+install (FILES ${glabels_qm_files}   DESTINATION share/glabels-qt/translations)
+install (FILES ${templates_qm_files} DESTINATION share/glabels-qt/translations)

translations/XmlStrings.cpp

@@ -0,0 +1,108 @@
+/*  XmlStrings.cpp
+ *
+ *  Copyright (C) 2013-2016  Jim Evins <evins@snaught.com>
+ *
+ *  This file is part of gLabels-qt.
+ *
+ *  gLabels-qt is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  gLabels-qt is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QApplication>
+#include <QStringList>
+#include <QFile>
+#include <QDomDocument>
+#include <QDomNode>
+#include <QDomAttr>
+#include <QTextStream>
+#include <QDebug>
+
+
+namespace
+{
+	QStringList stringList;
+}
+
+
+void parseElement( const QDomElement& node )
+{
+	// Examine each attribute for translatable strings
+	QDomNamedNodeMap attrNodes = node.attributes();
+	for ( int i = 0; i < attrNodes.count(); i++ )
+	{
+		QDomAttr attr = attrNodes.item(i).toAttr();
+		if ( attr.name().at(0) == '_' )
+		{
+			if ( !stringList.contains( attr.value() ) )
+			{
+				stringList.append( attr.value() );
+			}
+		}
+	}
+
+	// Recurse over children
+	for ( QDomNode child = node.firstChild(); !child.isNull(); child = child.nextSibling() )
+	{
+		parseElement( child.toElement() );
+	}
+}
+
+
+void parseFile( const QString& filename )
+{
+	QFile file( filename );
+
+	if ( file.open( QFile::ReadOnly|QFile::Text ) )
+	{
+		QDomDocument doc;
+
+		if ( doc.setContent( &file, false ) )
+		{
+			QDomElement root = doc.documentElement();
+
+			parseElement( root );
+		}
+	}
+}
+
+
+int main( int argc, char *argv[] )
+{
+	QCoreApplication app( argc, argv );
+
+	QStringList filenameList = app.arguments();
+	filenameList.removeFirst();  // Remove 0th argument, which is the command name
+
+	foreach ( QString filename, filenameList )
+	{
+		parseFile( filename );
+	}
+
+	stringList.sort();
+
+	QTextStream out( stdout );
+
+	out << "// Automatically generated with " << app.arguments().at(0) << endl;
+	out << "//" << endl;
+	out << "// Sources:" << endl;
+	foreach ( QString filename, filenameList )
+	{
+		out << "//         " << filename << endl;
+	}
+	out << "//" << endl;
+		
+	foreach ( QString string, stringList )
+	{
+		out << "QT_TRANSLATE_NOOP( \"XmlStrings\", \"" << string << "\" );" << endl;
+	}
+}