initial commit

src/main.rs

@@ -0,0 +1,52 @@
+use std::fs::File;
+use std::io::{BufRead, BufReader, Result};
+use std::collections::HashMap;
+use std::fs;
+
+fn main() -> Result<()> {
+    let file = File::open("beets_mv3u_renames")?;
+    let mut renames = HashMap::new();
+    for line in BufReader::new(file).lines() {
+        let line = line?;
+        let split: Vec<&str> = line.split("\t\t").collect();
+        renames.insert(split[0].to_string(), split[1].to_string());
+    }
+    
+    
+    // get the number of lines in the file so we can pre-allocate the array
+    let pf = fs::read_to_string("playlist.m3u").expect("unable to read");
+    let num_lines = pf.split("\n").collect::<Vec<&str>>().len() - 1;
+    let mut outputs: Vec<String> = vec![String::new(); num_lines];
+    //println!("{}", num_lines);
+
+    let pls_file = File::open("playlist.m3u")?;
+    let mut i = 0;
+    for entry in BufReader::new(pls_file).lines() {
+        let entry = entry?;
+        /*
+        match renames.get(&entry.to_string()) {
+            Some(line) => println!("found {}", line),
+            None => print!("")
+        }
+        */
+        let new = renames.get(&entry).unwrap_or(&entry).to_string();
+        /*
+        if new != &entry {
+            println!("renamed “{}” to “{}”", entry, new);
+        } else {
+            println!("“{}” remains unchanged", entry);
+        }
+        */
+        outputs[i] = new;
+        i += 1;
+    }
+    /*for s in outputs {
+        println!("{}", s);
+    }*/
+    let data = outputs.join("\n");
+    fs::write("playlist2.m3u", data).expect("unable to write");
+    //println!("{}", pf);
+    //println!("{}", renames.get(&"a string".to_string()).unwrap());
+    Ok(())
+}
+