Initial commit

src/main.rs

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+//! A minimal  argument parser. Structure your program invocation like a spell.
+
+
+
+mod project;
+
+
+
+/// Print the version of the project.
+fn print_version()
+{
+   println!("{} v{}", project::get_name(), project::get_version());
+}
+
+
+/// The usual starting point of your project.
+fn main()
+{
+   print_version();
+}

src/project.rs

@@ -0,0 +1,33 @@
+//! This is where the Projects build information can be retreived from.
+
+
+
+/// The environment variable defined by Cargo for the name.
+const NAME: Option<&str> = option_env!("CARGO_PKG_NAME");
+
+/// The environment variable defined by Cargo for the version.
+const VERSION: Option<&str> = option_env!("CARGO_PKG_VERSION");
+
+/// The string to display if a value is not defined during compile time.
+const NOT_DEFINED: &'static str = "UNDEFINED";
+
+
+
+/// Returns the name of the program as defined by the CARGO_PKG_NAME. This is
+/// set at compile time and comes from the Cargo.toml file.
+///
+/// If a value is not found, then it will return the not defined value.
+pub fn get_name() -> &'static str
+{
+   NAME.unwrap_or(NOT_DEFINED)
+}
+
+
+/// Returns the name of the program as defined by the CARGO_PKG_VERSION. This is
+/// set at compile time and comes from the Cargo.toml file.
+///
+/// If a value is not found, then it will return the not defined value.
+pub fn get_version() -> &'static str
+{
+   VERSION.unwrap_or(NOT_DEFINED)
+}