Adding new source file for writing output

notes.org

@@ -14,8 +14,9 @@
 ** Documentation
 ** Tidy up code
 ** Find todos
-** New source files: write.rs, print.rs
+** New source files: print.rs
 ** Tests better output
+** Better file backup
 * Bugs
 ** Better errors including line numbers in source file
 ** Handle list items properly

src/main.rs

@@ -1,7 +1,5 @@
 use clap::Parser;
-use std::env::temp_dir;
 use std::fs;
-use std::path;
 
 const TAB: i8 = 2;
 
@@ -16,8 +14,10 @@ mod parse;
 mod regexes;
 mod subs;
 mod wrap;
+mod write;
 use crate::format::*;
 use crate::parse::Cli;
+use crate::write::*;
 
 #[cfg(test)]
 mod tests;
@@ -57,16 +57,8 @@ fn main() {
             // print new file
             println!("{}", &new_file);
         } else {
-            // backup original file
-            let filepath = path::Path::new(&filename).canonicalize().unwrap();
-            let mut filebak = temp_dir();
-            filebak.push("tex-fmt");
-            fs::create_dir_all(&filebak).unwrap();
-            filebak.push(filepath.file_name().unwrap());
-            fs::copy(filepath.clone(), &filebak).unwrap();
-
-            // write new file
-            fs::write(filepath, new_file).unwrap();
+            backup_file(&filename);
+            write_file(&filename, &new_file);
         }
     }
 }

src/parse.rs

@@ -1,4 +1,4 @@
-use crate::Parser;
+use clap::Parser;
 
 #[derive(Parser)]
 pub struct Cli {

src/write.rs

@@ -0,0 +1,18 @@
+use crate::fs;
+use std::path;
+use std::env::temp_dir;
+
+pub fn backup_file(filename: &str) {
+    let filepath = path::Path::new(&filename).canonicalize().unwrap();
+    let mut filebak = temp_dir();
+    filebak.push("tex-fmt");
+    fs::create_dir_all(&filebak).unwrap();
+    filebak.push(filepath.file_name().unwrap());
+    fs::copy(filepath.clone(), &filebak).unwrap();
+}
+
+pub fn write_file(filename: &str, new_file: &str) {
+    let filepath = path::Path::new(&filename).canonicalize().unwrap();
+    fs::write(filepath, new_file).unwrap();
+}
+