--
-- codeblocks_cbp.lua
-- Generate a Code::Blocks C/C++ project.
-- Copyright (c) 2009, 2011 Jason Perkins and the Premake project
--

	local p = premake
	local project = p.project
	local config = p.config
	local tree = p.tree
	local codeblocks = p.modules.codeblocks

	codeblocks.project = {}
	local m = codeblocks.project
	m.elements = {}

	m.ctools = {
		gcc = "gcc",
		msc = "Visual C++",
	}

	function m.getcompilername(cfg)
		local tool = _OPTIONS.cc or cfg.toolset or p.GCC

		local toolset = p.tools[tool]
		if not toolset then
			error("Invalid toolset '" + (_OPTIONS.cc or cfg.toolset) + "'")
		end

		return m.ctools[tool]
	end

	function m.getcompiler(cfg)
		local toolset = p.tools[_OPTIONS.cc or cfg.toolset or p.GCC]
		if not toolset then
			error("Invalid toolset '" + (_OPTIONS.cc or cfg.toolset) + "'")
		end
		return toolset
	end

	function m.header(prj)
		_p('<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>')
		_p('<CodeBlocks_project_file>')
		_p(1,'<FileVersion major="1" minor="6" />')
		
		-- write project block header
		_p(1,'<Project>')
		_p(2,'<Option title="%s" />', prj.name)
		_p(2,'<Option pch_mode="2" />')
	end

	function m.footer(prj)
		-- write project block footer
		_p(1,'</Project>')
		_p('</CodeBlocks_project_file>')
	end

	m.elements.project = function(prj)
		return {
			m.header,
			m.configurations,
			m.files,
			m.extensions,
			m.footer
		}
	end

--
-- Project: Generate the CodeBlocks project file.
--
	function m.generate(prj)
		p.utf8()

		p.callArray(m.elements.project, prj)
	end

	function m.configurations(prj)
		-- write configuration blocks
		_p(2,'<Build>')
		local platforms = {}
		for cfg in project.eachconfig(prj) do
			local found = false
			for k,v in pairs(platforms) do
				if (v.platform == cfg.platform) then
					table.insert(v.configs, cfg)
					found = true
					break
				end
			end

			if (not found) then
				table.insert(platforms, {platform = cfg.platform, configs = {cfg}})
			end
		end
		
		for k,platform in pairs(platforms) do
			for k,cfg in pairs(platform.configs) do
				local compiler = m.getcompiler(cfg)

				_p(3,'<Target title="%s">', cfg.longname)
				
				_p(4,'<Option output="%s" prefix_auto="0" extension_auto="0" />', p.esc(cfg.buildtarget.relpath))
				
				if cfg.debugdir then
					_p(4,'<Option working_dir="%s" />', p.esc(path.getrelative(prj.location, cfg.debugdir)))
				end
				
				_p(4,'<Option object_output="%s" />', p.esc(path.getrelative(prj.location, cfg.objdir)))

				-- identify the type of binary
				local types = { WindowedApp = 0, ConsoleApp = 1, StaticLib = 2, SharedLib = 3 }
				_p(4,'<Option type="%d" />', types[cfg.kind])

				_p(4,'<Option compiler="%s" />', m.getcompilername(cfg))
				
				if (cfg.kind == "SharedLib") then
					_p(4,'<Option createDefFile="0" />')
					_p(4,'<Option createStaticLib="%s" />', iif(cfg.flags.NoImportLib, 0, 1))
				end

				-- begin compiler block --
				_p(4,'<Compiler>')
				for _,flag in ipairs(table.join(compiler.getcflags(cfg), compiler.getcxxflags(cfg), compiler.getdefines(cfg.defines), cfg.buildoptions)) do
					_p(5,'<Add option="%s" />', p.esc(flag))
				end
				if not cfg.flags.NoPCH and cfg.pchheader then
					_p(5,'<Add option="-Winvalid-pch" />')
					_p(5,'<Add option="-include &quot;%s&quot;" />', p.esc(cfg.pchheader))
				end
				for _,v in ipairs(cfg.includedirs) do
					_p(5,'<Add directory="%s" />', p.esc(path.getrelative(prj.location, v)))
				end
				_p(4,'</Compiler>')
				-- end compiler block --
				
				-- begin linker block --
				_p(4,'<Linker>')
				for _,flag in ipairs(table.join(compiler.getldflags(cfg), cfg.linkoptions)) do
					_p(5,'<Add option="%s" />', p.esc(flag))
				end
				for _,v in ipairs(config.getlinks(cfg, "all", "directory")) do
					_p(5,'<Add directory="%s" />', p.esc(v))
				end
				for _,v in ipairs(config.getlinks(cfg, "all", "basename")) do
					_p(5,'<Add library="%s" />', p.esc(v))
				end
				_p(4,'</Linker>')
				-- end linker block --
				
				-- begin resource compiler block --
				if config.findfile(cfg, ".rc") then
					_p(4,'<ResourceCompiler>')
					for _,v in ipairs(cfg.includedirs) do
						_p(5,'<Add directory="%s" />', p.esc(v))
					end
					for _,v in ipairs(cfg.resincludedirs) do
						_p(5,'<Add directory="%s" />', p.esc(v))
					end
					_p(4,'</ResourceCompiler>')
				end
				-- end resource compiler block --
				
				-- begin build steps --
				if #cfg.prebuildcommands > 0 or #cfg.postbuildcommands > 0 then
					_p(4,'<ExtraCommands>')
					for _,v in ipairs(cfg.prebuildcommands) do
						_p(5,'<Add before="%s" />', p.esc(v))
					end
					for _,v in ipairs(cfg.postbuildcommands) do
						_p(5,'<Add after="%s" />', p.esc(v))
					end

					_p(4,'</ExtraCommands>')
				end
				-- end build steps --
				
				_p(3,'</Target>')
			end
		end
		_p(2,'</Build>')
	end
	
--
-- Write out a list of the source code files in the project.
--

	function m.files(prj)
		local pchheader
		if (prj.pchheader) then
			pchheader = path.getrelative(prj.location, prj.pchheader)
		end
		
		local tr = project.getsourcetree(prj)
		tree.traverse(tr, {
			-- source files are handled at the leaves
			onleaf = function(node, depth)
				if node.relpath == node.vpath then
					_p(2,'<Unit filename="%s">', node.relpath)
				else
					_p(2,'<Unit filename="%s">', node.name)
					_p(3,'<Option virtualFolder="%s" />', path.getdirectory(node.vpath))
				end
				if path.isresourcefile(node.name) then
					_p(3,'<Option compilerVar="WINDRES" />')
				elseif path.iscfile(node.name) and prj.language == "C++" then
					_p(3,'<Option compilerVar="CC" />')
				end
				if not prj.flags.NoPCH and node.name == pchheader then
					_p(3,'<Option compilerVar="%s" />', iif(prj.language == "C", "CC", "CPP"))
					_p(3,'<Option compile="1" />')
					_p(3,'<Option weight="0" />')
					_p(3,'<Add option="-x c++-header" />')
				end
				_p(2,'</Unit>')

			end,
		}, false, 1)
	end

	function m.extensions(prj)
		for cfg in project.eachconfig(prj) do
			if cfg.debugenvs and #cfg.debugenvs > 0 then			
				--Assumption: if gcc is being used then so is gdb although this section will be ignored by
				--other debuggers. If using gcc and not gdb it will silently not pass the
				--environment arguments to the debugger
				if m.getcompilername(cfg) == "gcc" then
					_p(3,'<debugger>')
						_p(4,'<remote_debugging target="%s">', p.esc(cfg.longname))
							local args = ''
							local sz = #cfg.debugenvs
							for idx, v in ipairs(cfg.debugenvs) do
								args = args .. 'set env ' .. v 
								if sz ~= idx then args = args .. '&#x0A;' end
							end
							_p(5,'<options additional_cmds_before="%s" />',args)
						_p(4,'</remote_debugging>')
					_p(3,'</debugger>')
				else
					 error('Sorry at this moment there is no support for debug environment variables with this debugger and codeblocks')
				end
			end
		end
	end
