better debug

src/header.rs

@@ -1,3 +1,4 @@
+use std::fmt;
 use nom::{
     branch::alt,
     bytes::complete::{tag, take_while1},
@@ -11,13 +12,21 @@ use nom::{
 use crate::text::whitespace::{foldable_line, obs_crlf};
 use crate::text::misc_token::unstructured;
 
-#[derive(Debug, PartialEq, Clone)]
+#[derive(PartialEq, Clone)]
 pub struct Kv2<'a>(pub &'a [u8], pub &'a [u8]);
 impl<'a> From<(&'a [u8], &'a [u8])> for Kv2<'a> {
     fn from(pair: (&'a [u8], &'a [u8])) -> Self {
         Self(pair.0, pair.1)
     }
 }
+impl<'a> fmt::Debug for Kv2<'a> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt.debug_tuple("header::Kv2")
+            .field(&String::from_utf8_lossy(self.0))
+            .field(&String::from_utf8_lossy(self.1))
+            .finish()
+    }
+}
 
 #[derive(Debug, PartialEq, Clone)]
 pub enum Field<'a> {

src/mime/mod.rs

@@ -10,6 +10,7 @@ pub mod mechanism;
 /// Content-Type representation
 pub mod r#type;
 
+use std::fmt;
 use std::marker::PhantomData;
 
 use crate::imf::identification::MessageID;
@@ -55,15 +56,27 @@ impl<'a, T: WithDefaultType> From<AnyMIMEWithDefault<'a, T>> for AnyMIME<'a> {
     }
 }
 
-#[derive(Debug, PartialEq, Default, Clone)]
+#[derive(PartialEq, Default, Clone)]
 pub struct NaiveMIME<'a> {
     pub ctype: Option<NaiveType<'a>>,
     pub transfer_encoding: Mechanism<'a>,
     pub id: Option<MessageID<'a>>,
     pub description: Option<Unstructured<'a>>,
-    pub fields: Vec<header::Field<'a>>,
+    pub kv: Vec<header::Field<'a>>,
     pub raw: &'a [u8],
 }
+impl<'a> fmt::Debug for NaiveMIME<'a> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt.debug_struct("NaiveMime")
+            .field("ctype", &self.ctype)
+            .field("transfer_encoding", &self.transfer_encoding)
+            .field("id", &self.id)
+            .field("description", &self.description)
+            .field("kv", &self.kv)
+            .field("raw", &String::from_utf8_lossy(self.raw))
+            .finish()
+    }
+}
 
 impl<'a> FromIterator<Content<'a>> for NaiveMIME<'a> {
     fn from_iter<I: IntoIterator<Item = Content<'a>>>(it: I) -> Self {
@@ -83,8 +96,8 @@ impl<'a> FromIterator<Content<'a>> for NaiveMIME<'a> {
 }
 
 impl<'a> NaiveMIME<'a> {
-    pub fn with_fields(mut self, fields: Vec<header::Field<'a>>) -> Self {
-        self.fields = fields; self
+    pub fn with_kv(mut self, fields: Vec<header::Field<'a>>) -> Self {
+        self.kv = fields; self
     }
     pub fn with_raw(mut self, raw: &'a [u8]) -> Self {
         self.raw = raw; self

src/mime/type.rs

@@ -1,3 +1,4 @@
+use std::fmt;
 use nom::{
     bytes::complete::tag,
     combinator::{map, opt},
@@ -12,12 +13,21 @@ use crate::text::words::mime_atom;
 use crate::mime::{AnyMIME, MIME, NaiveMIME};
 
 // --------- NAIVE TYPE
-#[derive(Debug, PartialEq, Clone)]
+#[derive(PartialEq, Clone)]
 pub struct NaiveType<'a> {
     pub main: &'a [u8],
     pub sub: &'a [u8],
     pub params: Vec<Parameter<'a>>,
 }
+impl<'a> fmt::Debug for NaiveType<'a> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt.debug_struct("mime::NaiveType")
+            .field("main", &String::from_utf8_lossy(self.main))
+            .field("sub", &String::from_utf8_lossy(self.sub))
+            .field("params", &self.params)
+            .finish()
+    }
+}
 impl<'a> NaiveType<'a> {
     pub fn to_type(&self) -> AnyType {
         self.into()
@@ -30,11 +40,20 @@ pub fn naive_type(input: &[u8]) -> IResult<&[u8], NaiveType> {
     )(input)
 }
 
-#[derive(Debug, PartialEq, Clone)]
+#[derive(PartialEq, Clone)]
 pub struct Parameter<'a> {
     pub name: &'a [u8],
     pub value: MIMEWord<'a>,
 }
+impl<'a> fmt::Debug for Parameter<'a> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt.debug_struct("mime::Parameter")
+            .field("name", &String::from_utf8_lossy(self.name))
+            .field("value", &self.value)
+            .finish()
+    }
+}
+
 pub fn parameter(input: &[u8]) -> IResult<&[u8], Parameter> {
     map(
         tuple((mime_atom, tag(b"="), mime_word)),

src/part/composite.rs

@@ -1,3 +1,4 @@
+use std::fmt;
 use nom::IResult;
 
 use crate::header;
@@ -8,13 +9,23 @@ use crate::text::boundary::{boundary, Delimiter};
 use crate::pointers;
 
 //--- Multipart
-#[derive(Debug, PartialEq)]
+#[derive(PartialEq)]
 pub struct Multipart<'a> {
     pub mime: mime::MIME<'a, mime::r#type::Multipart>,
     pub children: Vec<AnyPart<'a>>,
     pub raw_part_inner: &'a [u8],
     pub raw_part_outer: &'a [u8],
 }
+impl<'a> fmt::Debug for Multipart<'a> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt.debug_struct("part::Multipart")
+            .field("mime", &self.mime)
+            .field("children", &self.children)
+            .field("raw_part_inner", &String::from_utf8_lossy(self.raw_part_inner))
+            .field("raw_part_outer", &String::from_utf8_lossy(self.raw_part_outer))
+            .finish()
+    }
+}
 impl<'a> Multipart<'a> {
     pub fn preamble(&self) -> &'a [u8] {
         pointers::parsed(self.raw_part_outer, self.raw_part_inner)
@@ -83,7 +94,7 @@ pub fn multipart<'a>(
                         .collect::<mime::NaiveMIME>();
 
                     let mime = mime
-                        .with_fields(fields)
+                        .with_kv(fields)
                         .with_raw(raw_hdrs);
 
                     (input_eom, mime)
@@ -113,7 +124,7 @@ pub fn multipart<'a>(
 
 //--- Message
 
-#[derive(Debug, PartialEq)]
+#[derive(PartialEq)]
 pub struct Message<'a> {
     pub mime: mime::MIME<'a, mime::r#type::DeductibleMessage>,
     pub imf: imf::Imf<'a>,
@@ -123,6 +134,18 @@ pub struct Message<'a> {
     pub raw_headers: &'a [u8],
     pub raw_body: &'a [u8],
 }
+impl<'a> fmt::Debug for Message<'a> {
+    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+        fmt.debug_struct("part::Message")
+            .field("mime", &self.mime)
+            .field("imf", &self.imf)
+            .field("child", &self.child)
+            .field("raw_part", &String::from_utf8_lossy(self.raw_part))
+            .field("raw_headers", &String::from_utf8_lossy(self.raw_headers))
+            .field("raw_body", &String::from_utf8_lossy(self.raw_body))
+            .finish()
+    }
+}
 
 pub fn message<'a>(
     m: mime::MIME<'a, mime::r#type::DeductibleMessage>,
@@ -142,7 +165,7 @@ pub fn message<'a>(
         let (naive_mime, imf) = part::field::split_and_build(&headers);
 
         // interpret headers to choose a mime type
-        let in_mime = naive_mime.with_fields(headers).with_raw(raw_headers).to_interpreted::<mime::WithGenericDefault>().into();
+        let in_mime = naive_mime.with_kv(headers).with_raw(raw_headers).to_interpreted::<mime::WithGenericDefault>().into();
         //---------------
 
         // parse a part following this mime specification
@@ -256,6 +279,9 @@ It DOES end with a linebreak.
                                         ]
                                     }),
                                     raw: &b"Content-type: text/plain; charset=us-ascii\n\n"[..],
+                                    kv: vec![
+                                        header::Field::Good(header::Kv2(&b"Content-type"[..], &b"text/plain; charset=us-ascii"[..]))
+                                    ],
                                     ..mime::NaiveMIME::default()
                                 },
                             },

src/part/discrete.rs

@@ -14,7 +14,7 @@ impl<'a> fmt::Debug for Text<'a> {
             .field("mime", &self.mime)
             .field(
                 "body",
-                &format_args!("\"{}\"", String::from_utf8_lossy(self.body)),
+                &String::from_utf8_lossy(self.body),
             )
             .finish()
     }
@@ -32,7 +32,7 @@ impl<'a> fmt::Debug for Binary<'a> {
             .field("mime", &self.mime)
             .field(
                 "body",
-                &format_args!("\"{}\"", String::from_utf8_lossy(self.body)),
+                &String::from_utf8_lossy(self.body),
             )
             .finish()
     }