add newcliapp

src/cmd_newcliapp.rs

@@ -0,0 +1,49 @@
+use std::fs::{ self, File, };
+use clap::{ Arg, ArgMatches, SubCommand, App, };
+use crate::cmd::{ Command, CommandError, };
+
+pub struct CommandNewCliApp;
+
+const CARGO_TOML_FILE: &str = "Carto.toml";
+
+const MAIN_RS: &str = include_str!("main.rs_template");
+const CMD_RS: &str = include_str!("cmd.rs");
+const CMD_DEFAULT_RS: &str = include_str!("cmd_default.rs");
+const CMD_SAMPLE_RS: &str = include_str!("cmd_sample.rs");
+const CARGO_TOML: &str = include_str!("Carto.toml_template");
+
+impl Command for CommandNewCliApp {
+
+    fn subcommand<'a>(&self) -> App<'a, 'a> {
+        SubCommand::with_name(self.name()).about("New cli app")
+            .arg(Arg::with_name("APP_NAME").required(true).index(1).help("App name"))
+            .arg(Arg::with_name("verbose").long("verbose").short("V").help("Verbose"))
+    }
+
+    fn name(&self) -> &str {
+        "newcliapp"
+    }
+
+    fn run(&self, _arg_matches: &ArgMatches, sub_arg_matches: &ArgMatches) -> CommandError {
+        if is_file_exists(CARGO_TOML_FILE) || is_file_exists("src") {
+            println!("[ERROR] File exists: {}, or dir exists: src/", CARGO_TOML_FILE);
+            return Ok(());
+        }
+
+        let app_name = sub_arg_matches.value_of("APP_NAME").expect("APP_NAME is required!");
+        let cargo_toml = CARGO_TOML.replace("{{NAME}}", app_name);
+
+        fs::create_dir("src/")?;
+        fs::write("src/main.rs", MAIN_RS.as_bytes())?;
+        fs::write("src/cmd.rs", CMD_RS.as_bytes())?;
+        fs::write("src/cmd_default.rs", CMD_DEFAULT_RS.as_bytes())?;
+        fs::write("src/cmd_sample.rs", CMD_SAMPLE_RS.as_bytes())?;
+        fs::write(CARGO_TOML_FILE, cargo_toml.as_bytes())?;
+
+        Ok(())
+    }
+}
+
+fn is_file_exists(file_name: &str) -> bool {
+    File::open(file_name).is_ok()
+}