Cargo.toml

@@ -3,23 +3,14 @@ name = "md2pdf"
 version = "0.0.1"
 authors = ["Thomas Forgione <thomas@forgione.fr>"]
 description = "A small utility to convert markdown files to pdf exploiting tectonic."
-edition = "2021"
+edition = "2018"
 license = "MIT"
 repository = "https://gitea.tforgione.fr/tforgione/md2pdf"
 readme = "README.md"
-cargo = "1.64"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-tectonic = "0.5.2"
-pulldown-cmark = "0.5.3"
-clap = { version = "4.0.7", features = ["cargo"] }
-
-[lib]
-name = "md2pdf"
-path = "src/lib.rs"
-
-[[bin]]
-name = "md2pdf"
-path = "src/main.rs"
+tectonic = "0.1.11"
+pulldown-cmark = "0.5.2"
+clap = "2.33.0"

src/lib.rs

@@ -82,7 +82,7 @@ pub fn markdown_to_latex(markdown: String) -> String {
             Event::Start(Tag::Image(_, path, title)) => {
                 output.push_str("\\begin{figure}\n");
                 output.push_str("\\centering\n");
-                output.push_str("\\includegraphics[width=\\textwidth]{");
+                output.push_str("\\includegraphics[width=\\textwidth]{");;
                 output.push_str(&*path);
                 output.push_str("}\n");
                 output.push_str("\\caption{");

src/main.rs

@@ -1,10 +1,8 @@
 use std::fs::File;
 use std::io::{Read, Write};
 use std::process::exit;
-use std::path::PathBuf;
-use std::ffi::OsStr;
 
-use clap::{crate_authors, crate_description, crate_name, crate_version, Command, Arg};
+use clap::{crate_authors, crate_description, crate_name, crate_version, App, Arg};
 
 use md2pdf::{markdown_to_latex, markdown_to_pdf};
 
@@ -22,71 +20,41 @@ macro_rules! unwrap {
 
 fn main() {
 
-    let matches = Command::new(crate_name!())
+    let matches = App::new(crate_name!())
         .bin_name(crate_name!())
         .version(crate_version!())
         .author(crate_authors!("\n"))
         .about(crate_description!())
-        .arg(Arg::new("INPUT")
+        .arg(Arg::with_name("INPUT")
              .long("input")
-             .short('i')
+             .short("i")
              .help("Input markdown files")
              .required(true)
-             .value_parser(clap::value_parser!(PathBuf))
-            )
-        .arg(Arg::new("OUTPUT")
+             .takes_value(true))
+        .arg(Arg::with_name("OUTPUT")
              .long("output")
-             .short('o')
+             .short("o")
              .help("Output tex or pdf file")
              .required(true)
-             .value_parser(clap::value_parser!(PathBuf))
-            )
+             .takes_value(true))
         .get_matches();
 
-    let input_path = matches.get_one::<PathBuf>("INPUT").unwrap();
     let mut content = String::new();
-    let mut input = unwrap!(File::open(input_path), "couldn't open input file");
+    let mut input = unwrap!(File::open(matches.value_of("INPUT").unwrap()), "couldn't open input file");
     unwrap!(input.read_to_string(&mut content), "couldn't read file content");
 
-    let output_path = matches.get_one::<PathBuf>("OUTPUT").unwrap();
-    let output_path_ext = output_path.extension().and_then(OsStr::to_str);
+    let output_path = matches.value_of("OUTPUT").unwrap();
     let mut output = unwrap!(File::create(output_path), "couldn't open output file");
 
-    match output_path_ext {
-        Some("tex") => {
-            let tex = markdown_to_latex(content);
-            unwrap!(output.write(tex.as_bytes()), "couldn't write output file");
-        },
-        Some("pdf") => {
-            match markdown_to_pdf(content) {
-                Ok(data) => {
-                    match output.write(&data) {
-                        Ok(_) => {
-                            exit(0);
-                        },
-                        Err(error) => {
-                            eprintln!(
-                                "error while writing file: {}", error
-                            );
-                            exit(1);
-                        },
-                    }
-                },
-                Err(error) => {
-                    eprintln!(
-                        "error while compiling latex: {}", error.description()
-                    );
-                    exit(1);
-                }
-            }
-        },
-        Some(ext) => {
-            eprintln!("unknown file format ({}) for output: {}", ext, output_path.display());
-            exit(1);
-        },
-        None => {
-            eprintln!("unknown file format for output: {}", output_path.display());
-            exit(1);
-        },
+    if output_path.ends_with(".tex") {
+        let tex = markdown_to_latex(content);
+        unwrap!(output.write(tex.as_bytes()), "couldn't write output file");
+    } else if output_path.ends_with(".pdf") {
+        let data = unwrap!(markdown_to_pdf(content), "error while compiling latex, this is most likely a bug");
+        unwrap!(output.write(&data), "coudln't write output file");
+    } else {
+        eprintln!("unknown file format for output: {}", output_path);
+        exit(1);
     }
+
 }