Update clap to v4

Cargo.toml

@@ -8,7 +8,7 @@ readme = "README.md"
 version = "0.2.2"
 
 [dependencies]
-clap = {version = "3.2", features = ["derive", "env", "unicode", "cargo"]}
+clap = {version = "4", features = ["derive", "env", "unicode", "cargo"]}
 env_logger = "0.9"
 log = "0.4"
 serde = "1.0"

src/main.rs

@@ -3,7 +3,7 @@ mod template;
 mod wrapped_context;
 
 use crate::template::Template;
-use clap::{crate_name, crate_version, StructOpt};
+use clap::{crate_name, crate_version, Parser};
 use env_logger::Env;
 use log::{debug, info, trace};
 use opts::*;

src/opts.rs

@@ -21,11 +21,11 @@ pub struct Opts {
 
 	/// Location of the context data. This file can be of the following type:
 	/// json | toml | yaml. If you prefer to pass the data as stdin, use `--stdin`
-	#[clap(index = 1, required_unless_present_any = &["stdin", "env-only"], conflicts_with = "env-only")]
+	#[clap(index = 1, required_unless_present_any = &["stdin", "env_only"], conflicts_with = "env_only")]
 	pub context: Option<PathBuf>,
 
 	/// The context data can be passed using stdin
-	#[clap(short, long, conflicts_with_all = &["context", "env-only"], required_unless_present_any = &["context", "env-only"])]
+	#[clap(short, long, conflicts_with_all = &["context", "env_only"], required_unless_present_any = &["context", "env_only"])]
 	pub stdin: bool,
 
 	/// If true, the current ENV will be appended to the data under the --env-key key