Added a string printer and updated README

+ Fixed a unit test as well

README.md

@@ -40,6 +40,12 @@ Members:
 * `Format`: Allows formats to include other formats
     * `format_name`: Format definition to use 
 
+#### Print Types
+* `Base`: print out the field as of a number of `base` N
+* `ByteArray`: display the field as an array of bytes
+* `String`: view fields as a string field
+* `Default`: use the default printer for the source type
+
 #### Example Config
 [Example](./formats/example.toml)
 

formats/example.toml

@@ -48,6 +48,7 @@ field_type = {type = "String", endianness = "BigEndian", max_len = 55}
 # byte field
 [[formats.fields]]
 name = "bytes field"
+print_type = {print = "String"}
 field_type = {type = "Bytes", endianness = "BigEndian", max_len = 5}
 
 # Example of layer formats

src/formatter/format.rs

@@ -745,6 +745,6 @@ mod tests {
         let (output, width) = field.format_data(&mut byte_stream, 0, &config).unwrap();
 
         assert_eq!(width, 40);
-        assert_eq!(output, "test: Test\n")
+        assert_eq!(output, "\ntest: Test\n")
     }
 }

src/formatter/printers.rs

@@ -18,20 +18,15 @@ pub fn base_notation(b: u32) -> String {
     }
 }
 
-#[derive(Debug, Deserialize, Clone)]
+#[derive(Debug, Deserialize, Clone, Default)]
 #[serde(tag = "print")]
 pub enum PrintType {
     Base { base: u32 },
     ByteArray,
+    String,
+    #[default]
     Default,
 }
-
-impl Default for PrintType {
-    fn default() -> Self {
-        PrintType::Default
-    }
-}
-
 impl PrintType {
     pub fn print_big_int<T: ByteOrderOperations>(&self, big_int: BigInt) -> String {
         match self {
@@ -39,7 +34,7 @@ impl PrintType {
                 format!("{}{}", base_notation(*b), big_int.to_str_radix(*b))
             }
             PrintType::ByteArray => print_bytes_as_array(&T::big_int_to_bytes(big_int)),
-            PrintType::Default => big_int.to_string(),
+            _ => big_int.to_string(),
         }
     }
 
@@ -49,7 +44,7 @@ impl PrintType {
                 format!("{}{}", base_notation(*b), big_int.to_str_radix(*b))
             }
             PrintType::ByteArray => print_bytes_as_array(&T::big_u_int_to_bytes(big_int)),
-            PrintType::Default => big_int.to_string(),
+            _ => big_int.to_string(),
         }
     }
 
@@ -76,7 +71,10 @@ impl PrintType {
     }
 
     pub fn print_bytes(&self, bytes: &[u8]) -> String {
-        print_bytes_as_array(bytes)
+        match self {
+            PrintType::String => std::str::from_utf8(bytes).unwrap().to_string(),
+            _ => print_bytes_as_array(bytes)
+        }
     }
 
     pub fn print_string(&self, s: &str) -> String {

src/parser/mod.rs

@@ -72,8 +72,7 @@ impl InputTypes {
         let str_arr = if src.len() == 1 {
             src[0]
                 .replace(',', " ")
-                .replace('[', "")
-                .replace(']', "")
+                .replace(['[', ']'], "")
                 .split_whitespace()
                 .map(|s| s.to_string())
                 .collect()