initial commit

Author: typomedia

.gitignore

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+.idea/
+target/
+Cargo.lock

Cargo.toml

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+[package]
+name = "jsonlint"
+version = "1.0.0"
+authors = ["Philipp Speck <[email protected]>"]
+edition = "2021"
+
+[dependencies]
+clap = "3.2.0"
+json = "0.12.4"

LICENSE.md

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+Copyright 2023 Typomedia, Philipp Speck
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Makefile

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+init:
+	rustup update
+	rustup component add rustfmt
+
+build:
+	cargo build --release

README.md

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+# jsonlint
+
+A simple `cli` utility to check the syntax of [JSON](https://www.json.org) files and/or pretty print them.
+
+It's written in Rust, and uses the [json](https://crates.io/crates/json) library.
+
+## USAGE
+    jsonlint [OPTIONS] <file>
+
+### ARGS
+    <file>    JSON file to parse
+
+### OPTIONS
+    -h, --help       Print help information
+    -p, --pretty     Pretty prints a JSON file
+    -V, --version    Print version information
+
+## Building
+
+    make build

src/main.rs

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+extern crate clap;
+
+use clap::{App, Arg};
+use std::fs;
+
+fn main() {
+    let matches = App::new("jsonlint")
+        .version("1.0.0")
+        .author("Philipp Speck <[email protected]>")
+        .about("A clone of jsonlint, written in Rust")
+        .arg(Arg::new("file")
+            .required(true)
+            .help("JSON file to parse")
+        )
+        .arg(Arg::new("pretty")
+            .short('p')
+            .long("pretty")
+            .takes_value(false)
+            .help("Pretty prints a JSON file")
+        )
+        .get_matches();
+
+    let path = matches.value_of("file").unwrap();
+    let data = fs::read_to_string(path).expect("Error reading file");
+    let pretty = matches.is_present("pretty");
+
+    if pretty {
+        match json_read(&data) {
+            Ok(v) => println!("{}", json::stringify_pretty(v, 4)),
+            Err(e) => println!("{}", e),
+        }
+    } else {
+        match json_lint(&data) {
+            Some(e) => println!("{}", e),
+            _ => println!("{}", data)
+        }
+    }
+}
+
+fn json_read(json: &str) -> Result<json::JsonValue, json::JsonError> {
+    json::parse(json)
+}
+
+fn json_lint(json: &str) -> Option<json::JsonError> {
+    let result: Result<json::JsonValue, json::JsonError> = json::parse(json);
+    result.err()
+}