add basename

README.md

@@ -32,7 +32,6 @@ To do
 -----
 
 - base64
-- basename
 - chcon
 - chgrp
 - chmod

basename/basename.rs

@@ -0,0 +1,126 @@
+#[link(name="basename", vers="1.0.0", author="Jimmy Lu")];
+
+/*
+ * This file is part of the uutils coreutils package.
+ *
+ * (c) Jimmy Lu <jimmy.lu.2011@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+extern mod extra;
+
+use std::io::stderr;
+use std::os;
+use std::str;
+use std::str::StrSlice;
+use extra::getopts::groups;
+
+static VERSION: &'static str = "1.0.0";
+
+fn main() {
+
+    let args = os::args();
+
+    let program = strip_dir( &args[ 0 ].clone() );
+
+    //
+    // Argument parsing
+    //
+
+    let opts = ~[
+        groups::optflag("h", "help", "display this help and exit"),
+        groups::optflag("V", "version", "output version information and exit"),
+    ];
+
+    let matches = match groups::getopts(args.tail(), opts) {
+        Ok(m) => m,
+        Err(f) => {
+            let stderr = stderr();
+            stderr.write_str( program + ": " + f.to_err_msg() + "\n" );
+            os::set_exit_status(1);
+            return;
+        }
+    };
+
+    if matches.opt_present( "help" ) {
+
+        println!( "Usage: {0:s} NAME [SUFFIX]", program );
+        println!( "  or: {0:s} OPTION", program );
+        println( "Print NAME with any leading directory components removed." );
+        println( "If specified, also remove a trailing SUFFIX." );
+
+        print( groups::usage( "", opts ) );
+
+        return;
+    }
+
+    if matches.opt_present( "version" ) {
+
+        println( program + " " + VERSION );
+        return;
+    }
+
+    // too few arguments
+    if args.len() < 2 {
+
+        println( program + ": missing operand" );
+        println( "Try `" + program + " --help' for more information." );
+        return;
+    }
+    // too many arguments
+    else if args.len() > 3 {
+
+        println( program + ": extra operand `" + args[ 3 ] + "'" );
+        println( "Try `" + program + " --help' for more information." );
+        return;
+    }
+
+    //
+    // Main Program Processing
+    //
+
+    let fullname = args[ 1 ].clone();
+
+    let mut name = strip_dir( &fullname );
+
+    if args.len() > 2 {
+
+        let suffix = args[ 2 ].clone();
+        name = strip_suffix( &name, &suffix );
+    }
+
+    println( name );
+}
+
+fn strip_dir( fullname :&~str ) -> ~str {
+
+    let mut name = ~"";
+
+    for c in fullname.rev_iter() {
+
+        if c == '/' || c == '\\' {
+            return name;
+        }
+
+        name = str::from_char( c ) + name;
+
+    }
+
+    return fullname.clone();
+}
+
+fn strip_suffix( name: &~str, suffix: &~str ) -> ~str {
+
+    if name == suffix {
+        return name.clone();
+    }
+
+    if name.ends_with( *suffix ) {
+
+        return name.slice_to( name.len() - suffix.len() ).into_owned();
+    }
+
+    return name.clone();
+}