WIP: Make snap tool

tools/snap.rs

@@ -0,0 +1,52 @@
+use std::path::PathBuf;
+
+use clap::Parser;
+use generative::io::{
+    get_input_reader, get_output_writer, read_geometries, write_geometries, GeometryFormat,
+};
+use stderrlog::ColorChoice;
+
+/// A template tool
+///
+/// Useful as a starting point for new tools.
+#[derive(Debug, Parser)]
+#[clap(name = "template", verbatim_doc_comment)]
+pub struct CmdlineOptions {
+    /// The log level
+    #[clap(short, long, default_value_t = log::Level::Info)]
+    pub log_level: log::Level,
+
+    /// Input file to read input from. Defaults to stdin.
+    #[clap(short, long)]
+    pub input: Option<PathBuf>,
+
+    /// Input geometry format.
+    #[clap(short = 'I', long, default_value_t = GeometryFormat::Wkt)]
+    pub input_format: GeometryFormat,
+
+    /// Output file to write result to. Defaults to stdout.
+    #[clap(short, long)]
+    pub output: Option<PathBuf>,
+
+    /// Output geometry format.
+    #[clap(short = 'O', long, default_value_t = GeometryFormat::Wkt)]
+    pub output_format: GeometryFormat,
+}
+
+fn main() {
+    let args = CmdlineOptions::parse();
+
+    stderrlog::new()
+        .verbosity(args.log_level)
+        .color(ColorChoice::Auto)
+        .init()
+        .expect("Failed to initialize stderrlog");
+
+    let reader = get_input_reader(&args.input).unwrap();
+    let geometries = read_geometries(reader, &args.input_format); // lazily loaded
+
+    // Do some kind of transformation to the geometries here.
+
+    let writer = get_output_writer(&args.output).unwrap();
+    write_geometries(writer, geometries, &args.output_format);
+}