Added command line interface with clap

Cargo.lock

@@ -15,6 +15,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+dependencies = [
+ "winapi 0.3.8",
+]
+
 [[package]]
 name = "arrayvec"
 version = "0.4.11"
@@ -171,6 +180,21 @@ dependencies = [
  "time",
 ]
 
+[[package]]
+name = "clap"
+version = "2.33.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
+dependencies = [
+ "ansi_term",
+ "atty",
+ "bitflags",
+ "strsim",
+ "textwrap",
+ "unicode-width",
+ "vec_map",
+]
+
 [[package]]
 name = "cloudabi"
 version = "0.0.3"
@@ -303,9 +327,10 @@ checksum = "923dea538cea0aa3025e8685b20d6ee21ef99c4f77e954a30febbaac5ec73a97"
 
 [[package]]
 name = "downfav"
-version = "0.4.0"
+version = "0.4.1"
 dependencies = [
  "chrono",
+ "clap",
  "elefren",
  "env_logger",
  "html2md",
@@ -1723,6 +1748,12 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1884d1bc09741d466d9b14e6d37ac89d6909cbcac41dd9ae982d4d063bbedfc"
 
+[[package]]
+name = "strsim"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
+
 [[package]]
 name = "syn"
 version = "0.15.44"
@@ -1807,6 +1838,15 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "textwrap"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+dependencies = [
+ "unicode-width",
+]
+
 [[package]]
 name = "thread_local"
 version = "0.3.6"
@@ -2011,6 +2051,12 @@ dependencies = [
  "smallvec",
 ]
 
+[[package]]
+name = "unicode-width"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
+
 [[package]]
 name = "unicode-xid"
 version = "0.1.0"
@@ -2075,6 +2121,12 @@ version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "33dd455d0f96e90a75803cfeb7f948768c08d70a6de9a8d2362461935698bf95"
 
+[[package]]
+name = "vec_map"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
+
 [[package]]
 name = "version_check"
 version = "0.1.5"

Cargo.toml

@@ -1,19 +1,21 @@
 [package]
 name = "downfav"
-version = "0.4.0"
+version = "0.4.1"
 authors = ["Julio Biason <julio.biason@pm.me>"]
 edition = "2018"
+description = "Download Mastodon favourites"
 
 [dependencies]
+chrono = "0.4"
+clap = "2.33"
 elefren = { version = "0.20", features = ["toml"] }
+env_logger = "0.8"
 html2md = "0.2"
+html5ever = "0.25"
+log = "0.4"
+markup5ever = "0.10"
+markup5ever_rcdom = "0.1"
 reqwest = "0.9"
 serde = "*"
 serde_derive = "*"
 toml = "0.5"
-log = "0.4"
-env_logger = "0.8"
-chrono = "0.4"
-html5ever = "0.25"
-markup5ever_rcdom = "0.1"
-markup5ever = "0.10"

src/args/mod.rs

@@ -0,0 +1,43 @@
+/*
+   DOWNFAV - Download Favourites
+   Copyright (C) 2020  Julio Biason
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+use clap::App;
+use clap::SubCommand;
+
+/// Possible commands
+pub enum Command {
+    /// Got a command that we don't know
+    Unknown,
+    /// Fetch all new favourites
+    Fetch,
+}
+
+/// Parse the command line, returning the necessary command.
+pub fn parse() -> Command {
+    let parser = App::new(clap::crate_name!())
+        .version(clap::crate_version!())
+        .author(clap::crate_authors!())
+        .about(clap::crate_description!())
+        .subcommand(SubCommand::with_name("fetch").about("Fetch the new favourites"));
+    let matches = parser.get_matches();
+    match matches.subcommand() {
+        ("", _) => Command::Fetch,
+        ("fetch", _) => Command::Fetch,
+        _ => Command::Unknown,
+    }
+}

src/main.rs

@@ -27,12 +27,21 @@ use crate::storage::joplin::Joplin;
 use crate::storage::org::Org;
 use crate::storage::storage::Storage;
 
+mod args;
 mod config;
 mod storage;
 
 fn main() {
     env_logger::init();
 
+    match args::parse() {
+        args::Command::Fetch => fetch_favourites(),
+        _ => println!("Unknown command"),
+    }
+}
+
+/// Retrieve favourites
+fn fetch_favourites() {
     let config = match config::Config::get() {
         Ok(config) => config,
         Err(e) => {
@@ -80,7 +89,6 @@ fn main() {
         config.save(&new_favourite);
     }
 }
-
 /// Create a connection to a mastodon server.
 fn connect_to_mastodon() -> elefren::data::Data {
     println!("Your server URL: ");