1 files changed, 110 insertions, 0 deletions
diff --git a/src/model/config.rs b/src/model/config.rs
new file mode 100644
index 0000000..844609d
--- /dev/null
+++ b/src/model/config.rs
@@ -0,0 +1,110 @@
+//! Definition of an iris [config][Config].
+
+use crate::{get_writer, path, Plugin, Result};
+
+use log::trace;
+use std::{fs, io::Write, path::Path};
+
+/// Iris config
+#[derive(Debug)]
+pub struct Config {
+	/// List of iris plugin specifications
+	pub plugins: Vec<Plugin>,
+}
+
+impl Config {
+	/// Read an iris config from the file system
+	pub fn read_from_file<P>(path: P) -> Result<Self>
+	where
+		P: AsRef<Path>,
+	{
+		trace!("reading: {}", path.as_ref().display());
+		let contents = fs::read_to_string(&path)?;
+		let iris = Self::parse(&contents)?;
+		Ok(iris)
+	}
+
+	/// Read an iris config from the plugin file path
+	pub fn read_from_plugin_file() -> Result<Self> {
+		trace!("read from plugin file");
+		Self::read_from_file(path::plugin_file())
+	}
+
+	/// Read an iris config from the lock file path
+	pub fn read_from_lock_file() -> Result<Self> {
+		trace!("read from lock file");
+		Self::read_from_file(path::lock_file())
+	}
+
+	/// Write the iris config to the file system.
+	pub fn write_to_file<P>(&self, path: P) -> Result<()>
+	where
+		P: AsRef<Path>,
+	{
+		trace!("writing: {}", path.as_ref().display());
+		let contents = self.to_string()?;
+		let mut write = get_writer(&path, '#')?;
+		write.write_all(contents.as_bytes())?;
+		Ok(())
+	}
+
+	/// Write the iris config to the plugins file.
+	pub fn write_to_plugin_file(&self) -> Result<()> {
+		self.write_to_file(path::plugin_file())
+	}
+
+	/// Write the iris config to the lock file.
+	pub fn write_to_lock_file(&self) -> Result<()> {
+		self.write_to_file(path::lock_file())
+	}
+
+	/// Write the vim autoload file formed from each plugin.
+	pub fn write_autoload_file(&self) -> Result<()> {
+		let path = path::autoload_file();
+		trace!("writing: {}", path.display());
+
+		let mut f = get_writer(&path, '"')?;
+
+		// BEGIN iris#load
+		writeln!(f, "function! iris#load()")?;
+		// add each plugin to load path
+		for plugin in &self.plugins {
+			// runtime path
+			{
+				let path = plugin.runtime_path().display();
+				writeln!(f, "set runtimepath+={path}")?;
+			}
+			// lua package path
+			if let Some(path) = plugin.lua_package_path() {
+				let path = path.display();
+				writeln!(f, "lua package.path = package.path .. \";{path}\"")?;
+			}
+			// vim source file
+			if let Some(path) = plugin.vim_source_file() {
+				let path = path.display();
+				writeln!(f, "source {path}")?;
+			}
+			// lua source file
+			if let Some(path) = plugin.lua_source_file() {
+				let path = path.display();
+				writeln!(f, "lua dofile('{path}')")?;
+			}
+		}
+		for plugin in &self.plugins {
+			// vim source after file
+			if let Some(path) = plugin.vim_source_after_file() {
+				let path = path.display();
+				writeln!(f, "source {path}")?;
+			}
+			// lua source after file
+			if let Some(path) = plugin.lua_source_after_file() {
+				let path = path.display();
+				writeln!(f, "lua dofile('{path}')")?;
+			}
+		}
+		writeln!(f, "endfunction")?;
+		// END iris#load
+
+		Ok(())
+	}
+}