1 files changed, 107 insertions, 0 deletions
diff --git a/lua/cmake-explorer/build.lua b/lua/cmake-explorer/build.lua
new file mode 100644
index 0000000..ead0646
--- /dev/null
+++ b/lua/cmake-explorer/build.lua
@@ -0,0 +1,107 @@
+local config = require("cmake-explorer.config")
+local Path = require("plenary.path")
+local Scandir = require("plenary.scandir")
+
+-- initial action to create query files (before first build)
+local init_query_dir = function(path)
+	Path:new(path, ".cmake", "api", "v1", "query", "codemodel-v2"):touch({ parents = true })
+	Path:new(path, ".cmake", "api", "v1", "query", "cmakeFiles-v1"):touch({ parents = true })
+	Path:new(path, ".cmake", "api", "v1", "reply"):mkdir({ parents = true })
+end
+
+local read_reply_dir = function(path)
+	local index, cmakefiles, codemodel, targets
+	local reply_dir = Path:new(path, ".cmake", "api", "v1", "reply")
+	if not reply_dir:exists() then
+		return
+	end
+	index = Scandir.scan_dir(reply_dir:absolute(), { search_pattern = "index*" })
+	if #index == 0 then
+		return
+	end
+	index = vim.json.decode(Path:new(index[1]):read())
+	for _, object in ipairs(index.objects) do
+		if object.kind == "codemodel" then
+			codemodel = vim.json.decode((reply_dir / object.jsonFile):read())
+			for _, target in ipairs(codemodel.configurations[1].targets) do
+				targets = targets or {}
+				table.insert(targets, vim.json.decode((reply_dir / target.jsonFile):read()))
+			end
+		elseif object.kind == "cmakeFiles" then
+			cmakefiles = vim.json.decode(Path:new(reply_dir / object.jsonFile):read())
+		end
+	end
+	return index, cmakefiles, codemodel, targets
+end
+
+local Build = {}
+
+Build.__index = Build
+
+-- new buildsystem
+function Build:new(o)
+	o = o or {}
+
+	local path
+	if type(o) == "string" then
+		path = o
+	elseif type(o) == "table" and o.path then
+		path = o.path
+	else
+		print("Build.new wrong argument. type(o) = " .. type(o))
+		return
+	end
+
+	local obj = {
+		path = Path:new(path),
+		index = nil,
+		cmakefiles = nil,
+		codemodel = nil,
+		targets = nil,
+	}
+
+	obj.path:mkdir({ parents = true })
+	init_query_dir(path)
+	obj.index, obj.cmakefiles, obj.codemodel, obj.targets = read_reply_dir(path)
+
+	setmetatable(obj, Build)
+	return obj
+end
+
+-- update all internals
+function Build:update()
+	self:set_codemodel()
+	self:set_cmakefiles()
+end
+
+function Build:build() end
+
+function Build:generator()
+	return self.index.cmake.generator.name
+end
+
+function Build:build_type()
+	return self.codemodel.configurations[1].name
+end
+
+function Build:is_multiconfig()
+	return self.index.cmake.generator.multiConfig
+end
+
+Build.name = function(opts)
+	return config.build_dir_template:gsub("{buildType}", opts.build_type or config.build_types[1])
+end
+
+Build.is_build_dir = function(path)
+	if not (Path:new(path):is_dir()) then
+		return
+	end
+	if not Path:new(path, ".cmake", "api", "v1", "query", "codemodel-v2"):exists() then
+		return
+	elseif not Path:new(path, ".cmake", "api", "v1", "query", "cmakeFiles-v1"):exists() then
+		return
+	end
+	return true
+end
+
+return Build