Extract clap args definitions to common cli module

Keeping these definitions separate from the implementations will help
generating man pages for the executables without putting _all_ of the
dependencies into the build-dependencies.

src/bin/git-add-coauthor.rs

@@ -1,20 +1,8 @@
 use clap::Parser;
-use git_mob::{parse_coauthors_file, write_coauthors_file, Author};
+use git_mob::{cli, parse_coauthors_file, write_coauthors_file, Author};
-
-#[derive(Parser, Debug)]
-#[clap(name = "git-add-coauthor", version)]
-/// Add a co-author to your git mob.
-struct Opt {
-    /// Co-author initials
-    initials: String,
-    /// The name of the co-author, in quotes, e.g. "Foo Bar"
-    name: String,
-    /// The email of the co-author
-    email: String,
-}
 
 fn main() {
-    let opt = Opt::parse();
+    let opt = cli::GitAddCoauthor::parse();
     let mut authors = parse_coauthors_file().unwrap_or_default();
     let new_author = Author {
         name: opt.name,

src/bin/git-delete-coauthor.rs

@@ -1,16 +1,8 @@
 use clap::Parser;
-use git_mob::{get_available_coauthors, write_coauthors_file};
+use git_mob::{cli, get_available_coauthors, write_coauthors_file};
-
-#[derive(Parser, Debug)]
-#[clap(name = "git-delete-coauthor", version)]
-/// Delete a co-author from your .git-coauthors file
-struct Opt {
-    /// Initials of the co-author to delete
-    initials: String,
-}
 
 fn main() {
-    let opt = Opt::parse();
+    let opt = cli::GitDeleteCoauthor::parse();
     let mut authors = get_available_coauthors();
     authors.remove(&opt.initials);
     write_coauthors_file(authors);

src/bin/git-edit-coauthor.rs

@@ -1,23 +1,9 @@
 use clap::Parser;
-use git_mob::{get_available_coauthors, write_coauthors_file, Author};
+use git_mob::{cli, get_available_coauthors, write_coauthors_file, Author};
 use std::process;
 
-#[derive(Parser, Debug)]
-#[clap(name = "git-edit-coauthor", version)]
-/// Edit a co-author in your .git-coauthors template
-struct Opt {
-    /// Co-author initials
-    initials: String,
-    /// The name of the co-author, in quotes, e.g. "Foo Bar"
-    #[clap(long, required_unless_present("email"))]
-    name: Option<String>,
-    /// The email of the co-author
-    #[clap(long, required_unless_present("name"))]
-    email: Option<String>,
-}
-
 fn main() {
-    let opt = Opt::parse();
+    let opt = cli::GitDeleteCoauthor::parse();
 
     let mut authors = get_available_coauthors();
 

src/bin/git-mob.rs

@@ -1,28 +1,14 @@
 use clap::Parser;
 use git_mob::{
-    ensure_commit_template_is_set, get_available_coauthors, get_main_author, set_main_author,
+    cli, ensure_commit_template_is_set, get_available_coauthors, get_main_author, set_main_author,
     with_gitmessage_template_path_or_exit, Author,
 };
 use std::fmt::Write;
 use std::fs;
 use std::process;
 
-#[derive(Parser, Debug)]
-#[clap(version, name = "git-mob")]
-/// Assemble a group of co-authors to help you on your coding quest
-pub struct Opt {
-    /// Prints list of available co-authors
-    #[clap(short, long)]
-    list: bool,
-    /// Overwrite the main author
-    #[clap(short, long)]
-    overwrite: Option<String>,
-    /// A list of co-author initials
-    coauthors: Vec<String>,
-}
-
 fn main() {
-    let args = Opt::parse();
+    let args = cli::GitMob::parse();
 
     if args.list {
         list_coauthors();

src/bin/git-solo.rs

@@ -1,16 +1,11 @@
 use clap::Parser;
 use git_mob::{
-    ensure_commit_template_is_set, get_main_author, with_gitmessage_template_path_or_exit,
+    cli, ensure_commit_template_is_set, get_main_author, with_gitmessage_template_path_or_exit,
 };
 use std::fs::File;
 
-#[derive(Parser, Debug)]
-#[clap(name = "git-solo", version)]
-/// Disband the mob and continue working solo.
-struct Opt {}
-
 fn main() {
-    let _opt = Opt::parse();
+    let _opt = cli::GitSolo::parse();
     let main_author = get_main_author();
     println!("{}", main_author);
 

src/cli.rs

@@ -0,0 +1,56 @@
+use clap::Parser;
+
+#[derive(Parser, Debug)]
+#[clap(version, name = "git-mob")]
+/// Assemble a group of co-authors to help you on your coding quest
+pub struct GitMob {
+    /// Prints list of available co-authors
+    #[clap(short, long)]
+    pub list: bool,
+    /// Overwrite the main author
+    #[clap(short, long)]
+    pub overwrite: Option<String>,
+    /// A list of co-author initials
+    pub coauthors: Vec<String>,
+}
+
+#[derive(Parser, Debug)]
+#[clap(name = "git-add-coauthor", version)]
+/// Add a co-author to your list of available co-authors
+pub struct GitAddCoauthor {
+    /// Co-author initials
+    pub initials: String,
+    /// The name of the co-author, in quotes, e.g. "Foo Bar"
+    pub name: String,
+    /// The email of the co-author
+    pub email: String,
+}
+
+#[derive(Parser, Debug)]
+#[clap(name = "git-edit-coauthor", version)]
+/// Edit a co-author in your list of available co-authors
+pub struct GitEditCoauthor {
+    /// Co-author initials
+    pub initials: String,
+    /// The name of the co-author, in quotes, e.g. "Foo Bar"
+    pub name: String,
+    /// The email of the co-author
+    pub email: String,
+}
+
+#[derive(Parser, Debug)]
+#[clap(name = "git-delete-coauthor", version)]
+/// Delete a co-author from your list of available co-authors
+pub struct GitDeleteCoauthor {
+    /// Co-author initials
+    pub initials: String,
+    /// The name of the co-author, in quotes, e.g. "Foo Bar"
+    pub name: String,
+    /// The email of the co-author
+    pub email: String,
+}
+
+#[derive(Parser, Debug)]
+#[clap(name = "git-solo", version)]
+/// Disband the mob and continue working solo.
+pub struct GitSolo {}

src/lib.rs

@@ -11,6 +11,8 @@ use std::io::BufReader;
 use std::process;
 use std::string::String;
 
+pub mod cli;
+
 #[derive(Serialize, Deserialize, Clone, Debug)]
 pub struct Author {
     pub name: String,