chore: Replace structopt with clap (#384)

jsonschema/Cargo.toml

@@ -16,7 +16,7 @@ categories = ["web-programming"]
 name = "jsonschema"
 
 [features]
-cli = ["structopt"]
+cli = ["clap"]
 default = ["resolve-http", "resolve-file", "cli"]
 draft201909 = []
 draft202012 = []
@@ -29,6 +29,7 @@ ahash = { version = "0.7.6", features = ["serde"] }
 anyhow = "1.0.55"
 base64 = "0.13.0"
 bytecount = { version = "0.6.2", features = ["runtime-dispatch-simd"] }
+clap = { version = "3.2", features = ["derive"], optional = true }
 fancy-regex = "0.10.0"
 fraction = { version = "0.10.0", default-features = false, features = ["with-bigint"] }
 iso8601 = "0.4.1"
@@ -42,7 +43,6 @@ regex = "1.5.4"
 reqwest = { version = "0.11.9", features = ["blocking", "json"], default-features = false, optional = true }
 serde = { version = "1.0.136", features = ["derive"] }
 serde_json = "1.0.79"
-structopt = { version = "0.3.26", optional = true }
 time = { version = "0.3.7", features = ["parsing", "macros"] }
 url = "2.2.2"
 uuid = "1.0.0"

jsonschema/src/main.rs

@@ -6,24 +6,24 @@ use std::{
     process,
 };
 
+use clap::Parser;
 use jsonschema::JSONSchema;
-use structopt::StructOpt;
 
 type BoxErrorResult<T> = Result<T, Box<dyn Error>>;
 
-#[derive(Debug, StructOpt)]
-#[structopt(name = "jsonschema")]
+#[derive(Parser)]
+#[clap(name = "jsonschema")]
 struct Cli {
     /// A path to a JSON instance (i.e. filename.json) to validate (may be specified multiple times).
-    #[structopt(short = "i", long = "instance")]
+    #[clap(short = 'i', long = "instance")]
     instances: Option<Vec<PathBuf>>,
 
     /// The JSON Schema to validate with (i.e. schema.json).
-    #[structopt(parse(from_os_str), required_unless("version"))]
+    #[clap(parse(from_os_str), required_unless("version"))]
     schema: Option<PathBuf>,
 
     /// Show program's version number and exit.
-    #[structopt(short = "v", long = "version")]
+    #[clap(short = 'v', long = "version")]
     version: bool,
 }