From 1c5ae132e1aea028529a3ad2e27ff04a9de602ea Mon Sep 17 00:00:00 2001
From: JJ
Date: Sat, 7 Jan 2023 12:06:35 -0800
Subject: parse_wiki_text: impl Display for Node, except for template nodes

templates are going to be like several dozen specific cases
---
 parse_wiki_text/src/display.rs | 102 +++++++++++++++++++++++++++++++++++++++++
 parse_wiki_text/src/lib.rs     |   1 +
 2 files changed, 103 insertions(+)
 create mode 100644 parse_wiki_text/src/display.rs

diff --git a/parse_wiki_text/src/display.rs b/parse_wiki_text/src/display.rs
new file mode 100644
index 0000000..fa73e5e
--- /dev/null
+++ b/parse_wiki_text/src/display.rs
@@ -0,0 +1,102 @@
+// Copyright 2022 JJ <https://j-james.me>
+// This is free software distributed under the terms specified in
+// the file LICENSE at the top-level directory of this distribution.
+
+#![allow(unused_variables)]
+
+use crate::{Node, Parameter};
+use std::fmt::Error;
+
+impl std::fmt::Display for Node<'_> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        return match self {
+            Node::CharacterEntity { character, .. } => write!(f, "{}", character),
+            Node::Text { value, .. } => write!(f, "{}", value),
+            Node::ParagraphBreak { .. } => write!(f, " "),
+            Node::HorizontalDivider { .. } => write!(f, "\n------\n"),
+
+            Node::Heading { nodes, level, .. } => {
+                match nodes.get(0) {
+                    Some(node) => write!(f, "\x1b[1m{}\x1b[0m", node),
+                    None => Err(Error),
+                }
+            },
+            Node::Link { text, target, .. } => {
+                match text.get(0) {
+                    Some(node) => write!(f, "{}", node),
+                    None => Err(Error),
+                }
+            },
+            Node::Template { name, parameters, .. } => {
+                match name.get(0) {
+                    Some(name) =>
+                        if let Node::Text { value, .. } = name {
+                            write!(f, "")
+                        } else {
+                            Err(Error)
+                        },
+                    None => Err(Error),
+                }
+            },
+
+            Node::OrderedList { items, .. } => {
+                for (i, item) in items.iter().enumerate() {
+                    write!(f, "\n{}. ", i+1)?;
+                    for node in &item.nodes {
+                        write!(f, "{}", node)?
+                    }
+                }
+                return Ok(());
+            },
+            Node::UnorderedList { items, .. } => {
+                for item in items {
+                    write!(f, "\n• ")?;
+                    for node in &item.nodes {
+                        write!(f, "{}", node)?
+                    }
+                }
+                return Ok(());
+            },
+            Node::DefinitionList { items, .. } => {
+                for item in items {
+                    write!(f, "\n")?;
+                    for node in &item.nodes {
+                        write!(f, "{}", node)?
+                    }
+                    write!(f, " ")?;
+                }
+                return Ok(());
+            },
+
+            Node::ExternalLink { nodes, .. } => {
+                for node in nodes {
+                    write!(f, "{}", node)?;
+                }
+                return Ok(());
+            } ,
+            Node::Image { target, text, .. } => {
+                write!(f, "{}", target)?;
+                for node in text {
+                    write!(f, "{}", node)?;
+                }
+                return Ok(());
+            },
+
+            Node::Table { .. } => todo!(),
+            Node::Parameter { default, name, .. } => todo!(),
+            Node::Redirect { target, .. } => Ok(()),
+            Node::Preformatted { nodes, .. } => Ok(()),
+            Node::Category { target, ordinal, .. } => Ok(()),
+            Node::Comment { .. } | Node::MagicWord { .. } => Ok(()),
+            Node::StartTag { .. } | Node::Tag { .. } | Node::EndTag { .. } => Ok(()),
+            Node::Bold { .. } | Node::Italic { .. } | Node::BoldItalic { .. } => Ok(()),
+        }
+    }
+}
+
+// https://en.wiktionary.org/wiki/Wiktionary:Templates
+fn handle_template(name: &str, parameters: &Vec<Parameter>) -> String {
+    match name {
+        _ => "--template--".to_string(),
+    }
+}
diff --git a/parse_wiki_text/src/lib.rs b/parse_wiki_text/src/lib.rs
index 0eac2ea..9763954 100644
--- a/parse_wiki_text/src/lib.rs
+++ b/parse_wiki_text/src/lib.rs
@@ -112,6 +112,7 @@ mod character_entity;
 mod comment;
 mod configuration;
 mod default;
+mod display;
 mod external_link;
 mod heading;
 mod html_entities;
-- 
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