Refactor

src/reskit/soundtrack.rs

@@ -1,17 +1,12 @@
-use std::{error::Error, fs::File, io::Read, str::from_utf8, slice::Iter, convert::TryInto, collections::HashMap};
+use std::{error::Error, fs::File, io::Read, convert::TryInto, collections::HashMap};
 use flate2::read::ZlibDecoder;
+use crate::reskit::utility::{Either, get_string, get_u8, skip, get_u32, get_i8, get_i32, get_u16, get_i16};
 
 const DMF_MAGIC_NUMBER: &'static str = ".DelekDefleMask.";
 const DMF_SUPPORTED_VERSION: u8 = 0x18;
 const DMF_MD: u8 = 0x02;
 const DMF_MD_ENHANCED_CH3: u8 = 0x42;
 
-#[derive(Debug)]
-pub enum Either< Type1, Type2 > {
-    Type1( Type1 ),
-    Type2( Type2 )
-}
-
 #[derive(Debug)]
 pub enum FrameMode {
     Ntsc,
@@ -140,64 +135,6 @@ pub struct DmfModule {
     samples: Vec<Sample>
 }
 
-fn get_string( bytes: &mut Iter<'_, u8>, take: usize ) -> Result<String, Box<dyn Error>> {
-    let took = bytes.take( take );
-    let took: Vec<u8> = took.cloned().collect();
-    let took = from_utf8( &took )?.to_string();
-
-    Ok( took )
-}
-
-fn get_u8( bytes: &mut Iter<'_, u8> ) -> Result<u8, Box<dyn Error>> {
-    let took = bytes.take( 1 ).cloned().next().ok_or( "invalid file: expected 1 byte" )?;
-
-    Ok( took )
-}
-
-fn get_i8( bytes: &mut Iter<'_, u8> ) -> Result<i8, Box<dyn Error>> {
-    let took = bytes.take( 1 ).cloned().next().ok_or( "invalid file: expected 1 byte" )?;
-
-    Ok( took as i8 )
-}
-
-fn get_u16( bytes: &mut Iter<'_, u8> ) -> Result<u16, Box<dyn Error>> {
-    let took = bytes.take( 2 );
-    let took: Vec<u8> = took.cloned().collect();
-    let took = u16::from_le_bytes( took[0..2].try_into()? );
-
-    Ok( took )
-}
-
-fn get_i16( bytes: &mut Iter<'_, u8> ) -> Result<i16, Box<dyn Error>> {
-    let took = bytes.take( 2 );
-    let took: Vec<u8> = took.cloned().collect();
-    let took = i16::from_le_bytes( took[0..2].try_into()? );
-
-    Ok( took )
-}
-
-fn get_u32( bytes: &mut Iter<'_, u8> ) -> Result<u32, Box<dyn Error>> {
-    let took = bytes.take( 4 );
-    let took: Vec<u8> = took.cloned().collect();
-    let took = u32::from_le_bytes( took[0..4].try_into()? );
-
-    Ok( took )
-}
-
-fn get_i32( bytes: &mut Iter<'_, u8> ) -> Result<i32, Box<dyn Error>> {
-    let took = bytes.take( 4 );
-    let took: Vec<u8> = took.cloned().collect();
-    let took = i32::from_le_bytes( took[0..4].try_into()? );
-
-    Ok( took )
-}
-
-fn skip( bytes: &mut Iter<'_, u8>, by: usize ) {
-    for _i in 0..by {
-        bytes.next();
-    }
-}
-
 impl DmfModule {
 
     pub fn from_file( path: &str ) -> Result<DmfModule, Box<dyn Error>> {

src/reskit/utility.rs

@@ -1,7 +1,74 @@
+use std::{slice::Iter, error::Error, str::from_utf8, convert::TryInto};
+
+
+#[derive(Debug)]
+pub enum Either< Type1, Type2 > {
+    Type1( Type1 ),
+    Type2( Type2 )
+}
+
 pub fn print_error( error_msg: &str ) {
 	red!( "fatal: " ); println!( "{}", error_msg );
 }
 
 pub fn print_good( message: &str ) {
 	green!( "success: " ); println!( "{}", message );
+}
+
+pub fn get_string( bytes: &mut Iter<'_, u8>, take: usize ) -> Result<String, Box<dyn Error>> {
+    let took = bytes.take( take );
+    let took: Vec<u8> = took.cloned().collect();
+    let took = from_utf8( &took )?.to_string();
+
+    Ok( took )
+}
+
+pub fn get_u8( bytes: &mut Iter<'_, u8> ) -> Result<u8, Box<dyn Error>> {
+    let took = bytes.take( 1 ).cloned().next().ok_or( "invalid file: expected 1 byte" )?;
+
+    Ok( took )
+}
+
+pub fn get_i8( bytes: &mut Iter<'_, u8> ) -> Result<i8, Box<dyn Error>> {
+    let took = bytes.take( 1 ).cloned().next().ok_or( "invalid file: expected 1 byte" )?;
+
+    Ok( took as i8 )
+}
+
+pub fn get_u16( bytes: &mut Iter<'_, u8> ) -> Result<u16, Box<dyn Error>> {
+    let took = bytes.take( 2 );
+    let took: Vec<u8> = took.cloned().collect();
+    let took = u16::from_le_bytes( took[0..2].try_into()? );
+
+    Ok( took )
+}
+
+pub fn get_i16( bytes: &mut Iter<'_, u8> ) -> Result<i16, Box<dyn Error>> {
+    let took = bytes.take( 2 );
+    let took: Vec<u8> = took.cloned().collect();
+    let took = i16::from_le_bytes( took[0..2].try_into()? );
+
+    Ok( took )
+}
+
+pub fn get_u32( bytes: &mut Iter<'_, u8> ) -> Result<u32, Box<dyn Error>> {
+    let took = bytes.take( 4 );
+    let took: Vec<u8> = took.cloned().collect();
+    let took = u32::from_le_bytes( took[0..4].try_into()? );
+
+    Ok( took )
+}
+
+pub fn get_i32( bytes: &mut Iter<'_, u8> ) -> Result<i32, Box<dyn Error>> {
+    let took = bytes.take( 4 );
+    let took: Vec<u8> = took.cloned().collect();
+    let took = i32::from_le_bytes( took[0..4].try_into()? );
+
+    Ok( took )
+}
+
+pub fn skip( bytes: &mut Iter<'_, u8>, by: usize ) {
+    for _i in 0..by {
+        bytes.next();
+    }
 }