rustfmt the sh.rs

user/src/bin/sh.rs

@@ -4,17 +4,17 @@
 #[macro_use]
 extern crate ucore_ulib;
 use ucore_ulib::io::getc;
-use ucore_ulib::syscall::{sys_fork, sys_exec, sys_wait};
+use ucore_ulib::syscall::{sys_exec, sys_fork, sys_wait};
 
-pub fn get_line(buffer: &mut[u8]) -> usize {
-	let mut pos: usize=0;
-	loop {
-		let ret=getc();
-		match ret {
-			None => break,
-			Some(byte) => {
-				let c = byte as char;
-				match c {
+pub fn get_line(buffer: &mut [u8]) -> usize {
+    let mut pos: usize = 0;
+    loop {
+        let ret = getc();
+        match ret {
+            None => break,
+            Some(byte) => {
+                let c = byte as char;
+                match c {
 					'\u{8}' /* '\b' */ => {
 						if pos > 0 {
                     		print!("\u{8} \u{8}");
@@ -34,80 +34,82 @@ pub fn get_line(buffer: &mut[u8]) -> usize {
 					}
 					_ => {}
 				}
-			},
-		}
-	}
-	pos
+            }
+        }
+    }
+    pos
 }
 
-const BUFFER_SIZE:usize=4096;
+const BUFFER_SIZE: usize = 4096;
 
 // IMPORTANT: Must define main() like this
 #[no_mangle]
 pub fn main() -> i32 {
-	use core::mem::uninitialized;
-	let mut buf:[u8;BUFFER_SIZE] = unsafe { uninitialized() };
-	println!("Rust user shell");
-	loop {
+    use core::mem::uninitialized;
+    let mut buf: [u8; BUFFER_SIZE] = unsafe { uninitialized() };
+    println!("Rust user shell");
+    loop {
         print!(">> ");
         let len = get_line(&mut buf);
-		if len>BUFFER_SIZE {
-			println!("Command is too long!");
-		}else{
-			let cmd=&buf[..len];
-			let mut parsed:[u8;BUFFER_SIZE+1] = unsafe { uninitialized() };
-			let mut offset:[usize;BUFFER_SIZE+1] = unsafe { uninitialized() };
-			let mut start:usize = 0;
-			let mut pos:usize = 0;
-			let mut is_word = false;
-			let mut parsed_pos:usize = 0;
-			let mut offset_pos:usize = 0;
-			loop {
-				if pos>=cmd.len() {
-					if is_word {
-						offset[offset_pos]=parsed_pos;
-						offset_pos+=1;
-						parsed[parsed_pos..parsed_pos+pos-start].copy_from_slice(&cmd[start..pos]);
-						parsed_pos+=pos-start;
-						parsed[parsed_pos]=0;
-						// parsed_pos+=1;
-					}
-					break;
-				}
-				if cmd[pos]==(' ' as u8) {
-					if is_word {
-						is_word=false;
-						offset[offset_pos]=parsed_pos;
-						offset_pos+=1;
-						parsed[parsed_pos..parsed_pos+pos-start].copy_from_slice(&cmd[start..pos]);
-						parsed_pos+=pos-start;
-						parsed[parsed_pos]=0;
-						parsed_pos+=1;
-					}
-				}else{
-					if !is_word {
-						is_word=true;
-						start=pos;
-					}
-				}
-				pos+=1;
-			}
-			if offset_pos > 0 {
-				let pid=sys_fork();
-				if pid==0 {
-					let mut ptrs:[*const u8;BUFFER_SIZE] = unsafe { uninitialized() };
-					for i in 0..offset_pos {
-						ptrs[i]=unsafe {parsed.as_ptr().offset(offset[i] as isize)};
-					}
-					return sys_exec(parsed.as_ptr(),offset_pos,ptrs.as_ptr());
-				}else if pid<0 {
-					panic!("pid<0")
-				}else{
-					let mut code:i32 = unsafe { uninitialized() };
-					sys_wait(pid as usize,&mut code as *mut i32);
-					println!("\n[Process exited with code {}]",code);
-				}
-			}
-		}
-	}
+        if len > BUFFER_SIZE {
+            println!("Command is too long!");
+        } else {
+            let cmd = &buf[..len];
+            let mut parsed: [u8; BUFFER_SIZE + 1] = unsafe { uninitialized() };
+            let mut offset: [usize; BUFFER_SIZE + 1] = unsafe { uninitialized() };
+            let mut start: usize = 0;
+            let mut pos: usize = 0;
+            let mut is_word = false;
+            let mut parsed_pos: usize = 0;
+            let mut offset_pos: usize = 0;
+            loop {
+                if pos >= cmd.len() {
+                    if is_word {
+                        offset[offset_pos] = parsed_pos;
+                        offset_pos += 1;
+                        parsed[parsed_pos..parsed_pos + pos - start]
+                            .copy_from_slice(&cmd[start..pos]);
+                        parsed_pos += pos - start;
+                        parsed[parsed_pos] = 0;
+                        // parsed_pos+=1;
+                    }
+                    break;
+                }
+                if cmd[pos] == (' ' as u8) {
+                    if is_word {
+                        is_word = false;
+                        offset[offset_pos] = parsed_pos;
+                        offset_pos += 1;
+                        parsed[parsed_pos..parsed_pos + pos - start]
+                            .copy_from_slice(&cmd[start..pos]);
+                        parsed_pos += pos - start;
+                        parsed[parsed_pos] = 0;
+                        parsed_pos += 1;
+                    }
+                } else {
+                    if !is_word {
+                        is_word = true;
+                        start = pos;
+                    }
+                }
+                pos += 1;
+            }
+            if offset_pos > 0 {
+                let pid = sys_fork();
+                if pid == 0 {
+                    let mut ptrs: [*const u8; BUFFER_SIZE] = unsafe { uninitialized() };
+                    for i in 0..offset_pos {
+                        ptrs[i] = unsafe { parsed.as_ptr().offset(offset[i] as isize) };
+                    }
+                    return sys_exec(parsed.as_ptr(), offset_pos, ptrs.as_ptr());
+                } else if pid < 0 {
+                    panic!("pid<0")
+                } else {
+                    let mut code: i32 = unsafe { uninitialized() };
+                    sys_wait(pid as usize, &mut code as *mut i32);
+                    println!("\n[Process exited with code {}]", code);
+                }
+            }
+        }
+    }
 }