FILE(GLOB HELP_FILES *)
LIST(REMOVE_ITEM HELP_FILES ${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.txt)

SET(HELP_OUTPUT "${CMAKE_SOURCE_DIR}/src/core/qgsexpression_texts.cpp")

FILE(WRITE ${HELP_OUTPUT} "#include \"qgsexpression.h\"\n#include <QCoreApplication>\n\nQHash<QString, QString> QgsExpression::gFunctionHelpTexts;\n\nvoid QgsExpression::initFunctionHelp()\n{\n  if( !gFunctionHelpTexts.isEmpty() )\n    return;\n")

FOREACH(HELP_FILE ${HELP_FILES})
  STRING(REGEX REPLACE "^.*/([^/]+)$" "\\1" FN ${HELP_FILE})

  FILE(READ ${HELP_FILE} HELP)
  STRING(REPLACE "\\" "&#92;" HELP "${HELP}")
  STRING(REPLACE "\"" "\\\"" HELP "${HELP}")
  STRING(REPLACE "\n" "\\n\"\n\"" HELP "${HELP}")
  FILE(APPEND ${HELP_OUTPUT} "\n  gFunctionHelpTexts.insert( \"${FN}\", QCoreApplication::translate( \"function_help\", \"${HELP}\") );")
ENDFOREACH(HELP_FILE ${HELP_FILES})

FILE(APPEND ${HELP_OUTPUT} "\n}\n")