add code documentation generation thanks to doxygen tool

.gitignore

@@ -1,7 +1,9 @@
 # project specific
 bin/*
 obj/*
+doc/*
 !.empty
+
 data/*/*
 !data/*/file
 *.o

Makefile

@@ -1,4 +1,4 @@
-.PHONY: cryptomain.ex crypt.ex decrypt.ex
+.PHONY: cryptomain.ex crypt.ex decrypt.ex doxygenconf
 
 GCXX_DEBUG=-ggdb
 CFLAGS=-Wall -Wextra --std=c++14 $(GCXX_DEBUG)
@@ -66,6 +66,11 @@ cleanD:
 	@rm -f data/*.dec
 	@rm -f data/*.key
 
-doc:
+markdown:
 	@pandoc --defaults=pandocConfig.yaml
 
+doxygenconf:
+	@doxygen -g doxygen.conf
+
+doc: doxygen.conf
+	@doxygen doxygen.conf

readme.md

@@ -15,8 +15,12 @@
 
 ## requirements
 
-this program required jsoncpp : https://github.com/open-source-parsers/jsoncpp
+* this program required jsoncpp : https://github.com/open-source-parsers/jsoncpp
 
 > archlinux setup : `pacman -S jsoncpp`
 
-gcc lib flag are retrieve thanks to [pkg-config](https://people.freedesktop.org/~dbn/pkg-config-guide.html) tool
+* gcc lib flag are retrieve thanks to [pkg-config](https://people.freedesktop.org/~dbn/pkg-config-guide.html) tool
+
+* cpp documentation is generated thanks to [doxygen](http://www.doxygen.nl/manual/doxygen_usage.html)
+
+> use make doc to generate doxygen documentation