# Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved.
# This component and the accompanying materials are made available under the terms of the License 
# "Eclipse Public License v1.0" which accompanies this distribution, 
# and is available at the URL "http://www.eclipse.org/legal/epl-v10.html".
#
# Initial Contributors:
# Nokia Corporation - initial contribution.
#
# Contributors:
#
# Description:
# An FLM, for creating a Doxygen configuration file and running Doxygen on that file
# to generate documentation.

# The groupin8 macro allows us to construct a via file, 8 objects at a time
# to avoid limits on argument lengths and sizes on Windows.
# It expands to a list of commands, each of which is on a separate line.
# This causes the shell to be invoked once for each line but each line should
# be shorter than the maximum allowed by windows.
define groupin8
	# NOTE: echo wierdness with -e means that we have to use ocatal escape code \0134\n (or \0134\0012)
	# If we use "\\\n" make discards the '\\' char. If we use "\\ \n" then we get a spurious space
	# after the '\' line continuation character (which consigns the line continuation character to
	# oblivion). So we use \0134 and that gives us a '\' immediatly followed by a newline.
	$(if $1,@echo -e -n $(foreach L,$(wordlist 1,8,$1),"$(L) \0134\n")>>$(OUTPUTPATH)/$(DOXY_FILE),)
	$(if $1,$(call groupin8,$(wordlist 9,$(words $1),$1)),@true)
endef

#Print version and generated dox file in log file
$(info Using Doxygen Extension Version: 0.1)
$(info DOXYFILE: $(OUTPUTPATH)/$(DOXY_FILE))

#definition that generates a doxygen configuration file and runs doxygen on it
define generatedoxconfig
ALL:: $(OUTPUTPATH)/$(DOXY_FILE).done

# Run doxygen on the dox file. Indicate doxygen was run by creating an empty .done file
# Also runs the Orb python plug-ins which post-process the XML.
$(OUTPUTPATH)/$(DOXY_FILE).done: $(OUTPUTPATH)/$(DOXY_FILE)
	$(call startrule,rundoxygen) \
	$(SBS_DOXYGEN) $(OUTPUTPATH)/$(DOXY_FILE) &&  \
	$(GNUTOUCH) $(OUTPUTPATH)/$(DOXY_FILE).done && \
	$(SBS_PYTHON) "$(SBS_HOME)/python/orb/comp_copy.py" $(OUTPUTPATH)/dox/dita $(EPOCROOT)/epoc32/release/doxygen/dita \
	$(call endrule,rundoxygen)

#Generate the doxygen configuration file from a template
#cpp is run on the PROUDCT_INLCLUDE hrh file to output all defines. 
#The cpp output piped to several SED regular expressions to create doxygen compatible defines to the TMP_HRH_DEFINES_FILE file
#The list is newline delimited so the tr command is used to remove all new lines and replace them with a space and this is output to HRH_DEFINES_FILE
#sed is used to  replace placeholders in the doxygen configuration template doxtemplate.txt with Raptor variables to produce TMP_DOXY_FILE
#TMP_DOXY_FILE is concatonated to HRH_DEFINES_FILE (last line in TMP_DOXY_FILE is "PREDEFINED =")
$(OUTPUTPATH)/$(DOXY_FILE): $(PROJECT_META)
	# Capture #define statements in .hrh file
	$(GNUCP) $(FLMHOME)/doxtemplate.txt $(OUTPUTPATH)/$(DOXY_FILE)
	$(GNUCHMOD) 777 $(OUTPUTPATH)/$(DOXY_FILE)
	# Add to PREDEFINED, this must be done first
	$(call groupin8, $(DEFINES))
	@echo -e "" >>$(OUTPUTPATH)/$(DOXY_FILE)
	# The rest can be done in any order
	# First the one-liners Note: echo does not use -n as we want the newline
	@echo -e "PROJECT_NAME = $(TARGET)" >>$(OUTPUTPATH)/$(DOXY_FILE)
	@echo -e "OUTPUT_DIRECTORY = $(OUTPUTPATH)/dox" >>$(OUTPUTPATH)/$(DOXY_FILE)
	@echo -e "WARN_LOGFILE = $(OUTPUTPATH)/warning.log" >>$(OUTPUTPATH)/$(DOXY_FILE)
	# Next INPUT i.e. source files
	@echo -e -n "INPUT = " >>$(OUTPUTPATH)/$(DOXY_FILE)
	$(call groupin8, $(SOURCE))
	@echo -e "" >>$(OUTPUTPATH)/$(DOXY_FILE)
	@echo -e -n "INCLUDE_PATH = " >>$(OUTPUTPATH)/$(DOXY_FILE)
	$(call groupin8, $(INCLUDES))
endef

# Deduce whether we should be performing a build with standard CPP characteristics
# This operates differently per-OS release, although OE TARGETTYPEs always build with standard CPP traits
ifeq ($(OPEN_ENVIRONMENT),1)
  STDCPP_BUILD:=1
endif

ifeq ($(SUPPORTS_STDCPP_NEWLIB),1)
  ifeq ($(NOSTDCPP),1)
    STDCPP_BUILD:=
  else
    ifeq ($(STDCPP),1)
      STDCPP_BUILD:=1
    endif
  endif
endif
  
ifeq ($(STDCPP_BUILD),1)
  CDEFS:=$(CDEFS) $(STDCPP_DEF)
  SYSTEMINCLUDE:=$(SYSTEMINCLUDE) $(STDCPP_INCLUDE)
endif

CDEFS:=$(CDEFS) $(TARGET_DEFS)
SYSTEMINCLUDE:=$(SYSTEMINCLUDE) $(TARGET_INCLUDES)

# include paths
UINCLUDE:=$(patsubst %,$(OPT.USERINCLUDE)%,$(USERINCLUDE))
SINCLUDE:=$(patsubst %,$(OPT.SYSINCLUDE)%,$(SYSTEMINCLUDE))
PINCLUDE:=$(OPT.PREINCLUDE)$(PRODUCT_INCLUDE)
INCLUDES:=$(UINCLUDE) $(OPT.SPLITINCLUDE) $(SINCLUDE) $(PINCLUDE)
#combination of all macros made available by Raptor
DEFINES:=$(call makemacrodef,$(OPT.DEFINE),$(CDEFS) $(TARGET_MACRO)) 

#Debug info
$(info SBS_DOXYGEN: $(SBS_DOXYGEN))
$(info GNUTOUCH: $(GNUTOUCH))
$(info OUTPUTPATH: $(OUTPUTPATH))
$(info CDEFS: $(CDEFS))
$(info OPT.PREINCLUDE :$(OPT.PREINCLUDE))
$(info OPT.SPLITINCLUDE :$(OPT.SPLITINCLUDE))
$(info OPT.SYSINCLUDE :$(OPT.SYSINCLUDE))
$(info OPT.USERINCLUDE :$(OPT.USERINCLUDE))
$(info SYSTEMINCLUDE :$(SYSTEMINCLUDE))
$(info DEFINES : $(DEFINES))
$(info INCLUDES : $(INCLUDES))
$(info EXPORTHEADERS : $(EXPORTHEADERS))
$(info PRODUCT_INCLUDE: $(PRODUCT_INCLUDE))
$(info TARGETTYPE: $(TARGETTYPE))
$(info COMPONENT_NAME: $(COMPONENT_NAME))
$(info CAPABILITY: $(CAPABILITY))

#Variables specific to generatedoxconfig
TMP_DOXY_FILE:=config.dox.tmp
DOXY_FILE:=config.dox
TMP_HRH_DEFINES_FILE:=hrhdefines.txt.tmp
HRH_DEFINES_FILE:=hrhdefines.txt
$(eval $(generatedoxconfig))


# make the output directories while reading makefile - some build engines prefer this
$(call makepath,$(OUTPUTPATH))
$(call makepath,$(EPOCROOT)/epoc32/release/doxygen)

## Clean up - problem here - how do we know what docs to remove?  Anyhow removing the marker (.done) file will at least
## ensure that we regenerate documentation when needed even if we don't actually get rid of old docs.
$(eval $(call GenerateStandardCleanTarget,$(OUTPUTPATH)/$(DOXY_FILE) $(OUTPUTPATH)/$(DOXY_FILE).done,$(OUTPUTPATH),))