--- /dev/null
+use std::env;
+use std::path::PathBuf;
+
+pub struct Configuration {
+ // Default Base Directories, default to XDG dirs but can be
+ // configured by users.
+ pub config_directory: PathBuf,
+ pub data_directory: PathBuf,
+ pub output_directory: PathBuf,
+
+ pub max_posts: u8,
+
+ // Derived directories: Config
+ pub remote_config: PathBuf,
+
+ // Derived directories: Data
+ pub posts_directory: PathBuf,
+ pub archive_directory: PathBuf,
+ pub static_directory: PathBuf,
+ pub templates_directory: PathBuf,
+
+ // Derived directories: Output
+ pub blog_output_directory: PathBuf,
+ pub archive_output_directory: PathBuf
+}
+
+impl Configuration {
+
+ pub fn new() -> Self {
+ let config_directory = Configuration::directory(
+ "BLOG_CONFIG_DIRECTORY",
+ "XDG_CONFIG_HOME",
+ ".config",
+ "blog"
+ );
+ let data_directory = Configuration::directory(
+ "BLOG_DATA_DIRECTORY",
+ "XDG_DATA_HOME",
+ ".local/share",
+ "blog"
+ );
+ let output_directory = Configuration::directory(
+ "BLOG_OUTPUT_DIRECTORY",
+ "XDG_CACHE_HOME",
+ ".cache",
+ "blog"
+ );
+
+ let max_posts: u8 = env::var("BLOG_MAX_POSTS")
+ .ok()
+ .and_then(|v| v.parse().ok())
+ .unwrap_or(3);
+
+ let remote_config = config_directory.join("blogremote");
+
+ let posts_directory = data_directory.join("posts");
+ let archive_directory = data_directory.join("archive");
+ let static_directory = data_directory.join("static");
+ let templates_directory = data_directory.join("templates");
+
+ let blog_output_directory = output_directory.join("blog");
+ let archive_output_directory = output_directory.join("archive");
+
+ Configuration {
+ config_directory,
+ data_directory,
+ output_directory,
+ max_posts,
+ remote_config,
+ posts_directory,
+ archive_directory,
+ static_directory,
+ templates_directory,
+ blog_output_directory,
+ archive_output_directory
+ }
+ }
+
+ fn directory(user_override: &str, default_value: &str, home_fallback: &str, path: &str) -> PathBuf {
+ match env::var(user_override) {
+ Ok(directory) => PathBuf::from(directory),
+ Err(_) => match env::var(default_value) {
+ Ok(directory) => PathBuf::from(directory),
+ Err(_) => match env::var("HOME") {
+ Ok(directory) => PathBuf::from(directory).join(home_fallback),
+ Err(_) => panic!("Could not find required directory, {} or {} should be set and readable.", user_override, default_value),
+ },
+ },
+ }.join(path)
+ }
+}