Add strikethrough feature

src/lib/html.rs

@@ -497,6 +497,7 @@ impl<'a> HtmlRenderer<'a> {
             }
             Token::Emphasis(ref vec) => Ok(format!("<em>{}</em>", this.render_vec(vec)?)),
             Token::Strong(ref vec) => Ok(format!("<b>{}</b>", this.render_vec(vec)?)),
+            Token::Strikethrough(ref vec) => Ok(format!("<del>{}</del>", this.render_vec(vec)?)),
             Token::Code(ref s) => Ok(format!("<code>{}</code>", escape::html(s))),
             Token::Subscript(ref vec) => Ok(format!("<sub>{}</sub>", this.render_vec(vec)?)),
             Token::Superscript(ref vec) => Ok(format!("<sup>{}</sup>", this.render_vec(vec)?)),

src/lib/latex.rs

@@ -219,6 +219,7 @@ impl<'a> LatexRenderer<'a> {
             .insert_bool("use_tables", self.book.features.table)
             .insert_bool("use_codeblocks", self.book.features.codeblock)
             .insert_bool("use_images", self.book.features.image)
+            .insert_bool("use_strikethrough", self.book.features.strikethrough)
             .insert_str("tex_lang", tex_lang);
         if let Ok(tex_tmpl_add) = self.book.options.get_str("tex.template.add") {
             data = data.insert_str("additional_code", tex_tmpl_add);
@@ -367,6 +368,7 @@ impl<'a> Renderer for LatexRenderer<'a> {
             }
             Token::Emphasis(ref vec) => Ok(format!("\\emph{{{}}}", self.render_vec(vec)?)),
             Token::Strong(ref vec) => Ok(format!("\\mdstrong{{{}}}", self.render_vec(vec)?)),
+            Token::Strikethrough(ref vec) => Ok(format!("\\sout{{{}}}", self.render_vec(vec)?)),
             Token::Code(ref s) => Ok(format!("\\mdcode{{{}}}",
                                                insert_breaks(s))),
             Token::Superscript(ref vec) => Ok(format!("\\textsuperscript{{{}}}", self.render_vec(vec)?)),

src/lib/odt.rs

@@ -228,8 +228,9 @@ impl<'a> OdtRenderer<'a> {
             Token::DescriptionList(ref v) |
             Token::DescriptionItem(ref v) |
             Token::DescriptionTerm(ref v) |
-            Token::DescriptionDetails(ref v) => {
-                warn!("{}", lformat!("ODT: Description list not handled in this output"));
+            Token::DescriptionDetails(ref v) |
+            Token::Strikethrough(ref v) => {
+                warn!("{}", lformat!("ODT: Description list and strikethrough not handled in this output"));
                 self.render_vec(v)
             }
         }

src/lib/parser.rs

@@ -43,6 +43,7 @@ pub struct Features {
     pub url: bool,
     pub subscript: bool,
     pub superscript: bool,
+    pub strikethrough: bool,
 }
 
 impl Features {
@@ -58,6 +59,7 @@ impl Features {
             url: false,
             subscript: false,
             superscript: false,
+            strikethrough: false,
         }
     }
 }
@@ -77,6 +79,7 @@ impl BitOr for Features {
             url: self.url | rhs.url,
             subscript: self.subscript | rhs.subscript,
             superscript: self.superscript | rhs.superscript,
+            strikethrough: self.strikethrough | rhs.strikethrough
         }
     }
 }
@@ -346,7 +349,10 @@ impl Parser {
             NodeValue::LineBreak => vec![Token::HardBreak],
             NodeValue::Emph => vec![Token::Emphasis(inner)],
             NodeValue::Strong => vec![Token::Strong(inner)],
-            NodeValue::Strikethrough => unimplemented!(),
+            NodeValue::Strikethrough => {
+                self.features.strikethrough = true;
+                vec![Token::Strikethrough(inner)]
+            },
             NodeValue::Superscript => vec![Token::Superscript(inner)],
             NodeValue::Link(ref link) => {
                 self.features.url = true;

src/lib/token.rs

@@ -1,4 +1,4 @@
-// Copyright (C) 2016 Élisabeth HENRY.
+// Copyright (C) 2016-2019 Élisabeth HENRY.
 //
 // This file is part of Crowbook.
 //
@@ -45,6 +45,8 @@ pub enum Token {
     /// **Strong**, a.k.a. bold
     Strong(Vec<Token>),
     /// `Code`, a.k.a. verbatim
+    /// Strikethrough
+    Strikethrough(Vec<Token>),
     Code(String),
     /// A quote
     BlockQuote(Vec<Token>),
@@ -136,6 +138,7 @@ impl Token {
             Link(_, _, ref v) |
             Image(_, _, ref v) |
             StandaloneImage(_, _, ref v) |
+            Strikethrough(ref v) |
             Annotation(_, ref v) => Some(v),
 
             __NonExhaustive => unreachable!(),
@@ -169,6 +172,7 @@ impl Token {
             Footnote(ref mut v) |
             Link(_, _, ref mut v) |
             Image(_, _, ref mut v) |
+            Strikethrough(ref mut v) |
             StandaloneImage(_, _, ref mut v) => Some(v),
 
             __NonExhaustive => unreachable!(),

templates/latex/template.tex

@@ -29,6 +29,10 @@
 % Allows hyphenatations in \texttt
 \usepackage[htt]{hyphenat}
 
+<<#use_strikethrough>>
+% Only included if strikethrough is used in the document
+\usepackage[normalem]{ulem}
+<</use_strikethrough>>
 <<#use_url>>
 % Only included if URLs are used in the document
 \usepackage[colorlinks=true,breaklinks=true,hypertexnames=false]{hyperref}