Commit initial

src/main.rs

@@ -0,0 +1,110 @@
+use clap::Parser;
+use std::fs::File;
+use std::io::BufRead;
+use std::io::BufReader;
+
+#[derive(Parser, Debug)]
+#[command(version)]
+struct Args {
+    /// Numérotation des lignes non vides
+    #[arg(short = 'b', long)]
+    number_nonblank: bool,
+
+    /// Affichage d'un $ à la fin de chaque ligne
+    #[arg(short = 'E', long)]
+    show_ends: bool,
+
+    /// Numérotation des lignes
+    #[arg(short, long)]
+    number: bool,
+
+    /// Suppression des lignes vides répétées
+    #[arg(short, long)]
+    squeeze_blank: bool,
+
+    /// Affichage des tabulations avec la séquence ^I
+    #[arg(short = 'T', long)]
+    show_tabs: bool,
+
+    /// Ignoré (conservé par compatibilité)
+    #[arg(short = 'u')]
+    _u: bool,
+
+    /// Utilisation de la notation ^ et M- sauf pour LFD et TAB
+    #[arg(short = 'v', long)]
+    show_nonprinting: bool,
+
+    /// Equivalent à -vET
+    #[arg(short = 'A', long)]
+    show_all: bool,
+
+    /// Equivalent à -vE
+    #[arg(short = 'e')]
+    show_all_no_tabs: bool,
+
+    /// Equivalent à -vT
+    #[arg(short = 't')]
+    show_all_no_ends: bool,
+
+    /// Liste de fichiers
+    files: Vec<String>,
+}
+
+fn main() {
+    let mut args = Args::parse();
+
+    args.show_nonprinting = args.show_nonprinting || args.show_all || args.show_all_no_tabs || args.show_all_no_ends;
+    args.show_ends = args.show_ends || args.show_all || args.show_all_no_tabs;
+    args.show_tabs = args.show_tabs || args.show_all || args.show_all_no_ends;
+    args.number_nonblank = args.number_nonblank && !args.number;
+
+    //args.files = vec!(String::from("fichier1"));
+
+    let line_ends = if args.show_ends { "$" } else { "" };
+    let mut line_number = 0;
+    let mut line_prefix: String;
+    let mut last_was_blank = false;
+
+    for file_path in args.files {
+        let f = File::open(file_path).unwrap();
+        let mut reader = BufReader::new(f);
+        loop {
+            let mut line = String::new();
+            if let Ok(len) = reader.read_line(&mut line) {
+                if len==0 {
+                    break;
+                }
+
+                let line_is_blank = line.len()==0;
+                let skip_line = args.squeeze_blank && last_was_blank && line_is_blank;
+
+                if args.number || (args.number_nonblank && !line_is_blank) {
+                    line_number += 1;
+                    line_prefix = format!("{:>6} ", line_number);
+                    if line_prefix.len()<8 {
+                        line_prefix.push(' ');
+                    }
+                } else {
+                    line_prefix = String::from("");
+                }
+
+                let mut line_to_display = String::from("");
+                for c in line.to_string().chars() {
+                    match c as u8 {
+                        9 => if args.show_tabs { line_to_display.push(c)  } else { line_to_display.push_str("^I") }
+                        10 => {},
+                        0 ..= 127 => line_to_display.push(c),
+                        128 ..= 255 => if args.show_nonprinting { line_to_display.push_str("M^"); line_to_display.push((c as u8 - 128) as char) } else { line_to_display.push(c) },
+                        _ => {}
+                    };
+                }
+
+                if !skip_line {
+                    println!("{}{}{}", line_prefix, line_to_display, line_ends);
+                }
+
+                last_was_blank = line_is_blank;
+            }
+        }
+    }
+}