From d86df2a44b8ad37d7ac03a3df3aacc2c6c502e0b Mon Sep 17 00:00:00 2001
From: clerie <git@clerie.de>
Date: Sun, 5 Jan 2025 14:11:46 +0100
Subject: [PATCH] Specify input and output file paths

---
 Cargo.lock  | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |   1 +
 src/main.rs |  22 ++++++++--
 3 files changed, 140 insertions(+), 3 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 9f9701b..26d9769 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -41,6 +41,55 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "anstream"
+version = "0.6.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8acc5369981196006228e28809f761875c0327210a891e941f4c683b3a99529b"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55cc3b69f167a1ef2e161439aa98aed94e6028e5f9a59be9a6ffb47aef1651f9"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b2d16507662817a6a20a9ea92df6652ee4f94f914589377d69f3b21bc5798a9"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79947af37f4177cfead1110013d678905c37501914fba0efea834c3fe9a8d60c"
+dependencies = [
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2109dbce0e72be3ec00bed26e6a7479ca384ad226efdd66db8fa2e3a38c83125"
+dependencies = [
+ "anstyle",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.93"
@@ -128,6 +177,52 @@ dependencies = [
  "windows-targets",
 ]
 
+[[package]]
+name = "clap"
+version = "4.5.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3135e7ec2ef7b10c6ed8950f0f792ed96ee093fa088608f1c76e569722700c84"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.5.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30582fc632330df2bd26877bde0c1f4470d57c582bbc070376afcd04d8cb4838"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.5.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ac6a0c7b1a9e9a5186361f67dfa1b88213572f427fb9ab038efb2bd8c582dab"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f46ad14479a25103f283c0f10005961cf086d8dc42205bb44c46ac563475dca6"
+
+[[package]]
+name = "colorchoice"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -325,6 +420,12 @@ version = "0.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bf151400ff0baff5465007dd2f3e717f3fe502074ca563069ce3a6629d07b289"
 
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
 [[package]]
 name = "http"
 version = "1.1.0"
@@ -615,6 +716,12 @@ version = "2.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ddc24109865250148c2e0f3d25d4f0f479571723792d3802153c60922a4fb708"
 
+[[package]]
+name = "is_terminal_polyfill"
+version = "1.70.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
+
 [[package]]
 name = "itoa"
 version = "1.0.14"
@@ -838,6 +945,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "chrono",
+ "clap",
  "feed-rs",
  "reqwest",
 ]
@@ -1119,6 +1227,12 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
 
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
 [[package]]
 name = "subtle"
 version = "2.6.1"
@@ -1316,6 +1430,12 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "utf8parse"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
+
 [[package]]
 name = "uuid"
 version = "1.11.0"
diff --git a/Cargo.toml b/Cargo.toml
index 329a141..9a0dfdb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,5 +6,6 @@ edition = "2021"
 [dependencies]
 anyhow = "1.0.93"
 chrono = "0.4.38"
+clap = { version = "4.5.23", features = ["derive"] }
 feed-rs = "2.2.0"
 reqwest = { version = "0.12.9", features = ["blocking"] }
diff --git a/src/main.rs b/src/main.rs
index b7d0d42..0140c5b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,9 @@ use anyhow::{
     Context,
     Result,
 };
+use clap::{
+    Parser,
+};
 use feed_rs::{
     parser::parse,
     model::Feed,
@@ -12,6 +15,17 @@ use reqwest::{
     Url,
 };
 
+#[derive(Parser)]
+#[command(version, about, long_about = None)]
+struct Cli {
+    /// Path to file containing feeds
+    #[arg(long, default_value_t = String::from("feeds.txt"))]
+    feeds: String,
+    /// Path to output file
+    #[arg(long, default_value_t = String::from("index.html"))]
+    out: String,
+}
+
 fn fetch_feed(url: impl IntoUrl) -> Result<Feed> {
     let content = reqwest::blocking::get(url)?.bytes()?;
     Ok(parse(&content[..])?)
@@ -38,10 +52,11 @@ fn read_feed_file(path: &str) -> Result<Vec<Url>> {
 }
 
 fn main() -> Result<()> {
+    let cli = Cli::parse();
 
     let mut feed_items = Vec::new();
 
-    let feeds = read_feed_file("feeds.txt")?;
+    let feeds = read_feed_file(&cli.feeds)?;
 
     for feed_url in feeds {
         feed_items.extend(fetch_feed(feed_url)?.entries);
@@ -60,7 +75,7 @@ fn main() -> Result<()> {
     out.push_str("<ul>\n");
 
     for item in feed_items {
-        out.push_str(&format!("<li><a href=\"{}\">{}</a> ({})</li>\n", item.links.first().context("No link found")?.href, item.title.context("No title found")?.content, item.published.context("")?));
+        out.push_str(&format!("<li><a href=\"{}\">{}</a> ({})</li>\n", item.links.first().context("No link found")?.href, item.title.context("No title found")?.content, item.published.context("No publishing time")?));
     }
 
     out.push_str("</ul>\n");
@@ -68,7 +83,8 @@ fn main() -> Result<()> {
     out.push_str("</body>\n");
     out.push_str("</html>\n");
 
-    std::fs::write("index.html", out)?;
+    std::fs::write(&cli.out, out)
+        .context("Failed to write output to file")?;
 
     Ok(())
 }