Add options: tex.template.add, html.css.add, epub.css.add

These three options allow to specify inline code that will be added to
the templates.

Fixes #18

src/lib/bookoptions.rs

@@ -46,6 +46,7 @@ import_config:path                  # {import_config}
 html.header:str                     # {html_header}
 html.footer:str                     # {html_footer}
 html.css:tpl                        # {html_css}
+html.css.add:str                    # {html_css_add}
 html.css.colours:tpl                # {css_colours}
 html.js:tpl                         # {html_js}
 html.css.print:tpl                  # {css_print}
@@ -68,12 +69,14 @@ html_dir.chapter.html:tpl           # {chapter_html}
 # {epub_opt}
 epub.version:int:2                  # {epub_ver}
 epub.css:tpl                        # {epub_css}
+epub.css.add:str                    # {epub_css_add}
 epub.chapter.xhtml:tpl              # {chapter_xhtml}
 
 # {tex_opt}
 tex.links_as_footnotes:bool:true    # {tex_links}
 tex.command:str:xelatex             # {tex_command}
 tex.template:tpl                    # {tex_tmpl}
+tex.template.add:str                # {tex_tmpl_add}
 tex.class:str:book                  # {tex_class}
 tex.paper_size:str:a5paper          # {tex_paper_size}
 tex.title:bool:true                 # {tex_title}
@@ -196,6 +199,7 @@ html.crowbook_link:alias                            # {removed}
                                          html_header = lformat!("Custom header to display at the beginning of html file(s)"),
                                          html_footer = lformat!("Custom footer to display at the end of HTML file(s)"),
                                          html_css = lformat!("Path of a stylesheet for HTML rendering"),
+                                         html_css_add = lformat!("Some inline CSS added to the stylesheet template"),
                                          css_colours = lformat!("Path of a stylesheet for the colours for HTML"),
                                          html_js = lformat!("Path of a javascript file"),
                                          css_print = lformat!("Path of a media print stylesheet for HTML rendering"),
@@ -214,11 +218,13 @@ html.crowbook_link:alias                            # {removed}
 
                                          epub_ver = lformat!("EPUB version to generate (2 or 3)"),
                                          epub_css = lformat!("Path of a stylesheet for EPUB"),
+                                         epub_css_add = lformat!("Inline CSS added to the EPUB stylesheet template"),
                                          chapter_xhtml = lformat!("Path of an xhtml template for each chapter"),
 
                                          tex_links = lformat!("Add foontotes to URL of links so they are readable when printed"),
                                          tex_command = lformat!("LaTeX command to use for generating PDF"),
                                          tex_tmpl = lformat!("Path of a LaTeX template file"),
+                                         tex_tmpl_add = lformat!("Inline code added in the LaTeX template"),
                                          tex_class = lformat!("LaTeX class to use"),
                                          tex_title = lformat!("If true, generate a title with maketitle"),
                                          tex_paper_size = lformat!("Specifies the size of the page."),

src/lib/epub.rs

@@ -97,11 +97,14 @@ impl<'a> EpubRenderer<'a> {
             compile_str(self.html.book.get_template("epub.css").unwrap().as_ref(),
                              &self.html.book.source,
                              lformat!("could not compile template 'epub.css'"))?;
-        let data = self.html
+        let mut data = self.html
             .book
             .get_metadata(|s| self.render_vec(&Parser::new().parse_inline(s)?))?
-        .insert_bool(self.html.book.options.get_str("lang").unwrap(), true)
-            .build();
+            .insert_bool(self.html.book.options.get_str("lang").unwrap(), true);
+        if let Ok(epub_css_add) = self.html.book.options.get_str("epub.css.add") {
+            data = data.insert_str("additional_code", epub_css_add);
+        }
+        let data = data.build();
         let mut res: Vec<u8> = vec![];
         template_css.render_data(&mut res, &data)?;
         let css = String::from_utf8_lossy(&res);

src/lib/html_dir.rs

@@ -341,6 +341,9 @@ impl<'a> HtmlDirRenderer<'a> {
         let mut data = self.html.book.get_metadata(|s| Ok(s.to_owned()))?;
         data = data.insert_str("colours",
                                self.html.book.get_template("html.css.colours")?);
+        if let Ok(html_css_add) = self.html.book.options.get_str("html.css.add") {
+            data = data.insert_str("additional_code", html_css_add);
+        }
         if self.html.proofread && self.html.book.options.get_bool("proofread.nb_spaces").unwrap() {
             data = data.insert_bool("display_spaces", true);
         }

src/lib/html_single.rs

@@ -178,6 +178,9 @@ impl<'a> HtmlSingleRenderer<'a> {
             .get_metadata(|s| self.render_vec(&Parser::new().parse_inline(s)?))?
             .insert_str("colours",
                         self.html.book.get_template("html.css.colours")?);
+        if let Ok(html_css_add) = self.html.book.options.get_str("html.css.add") {
+            data = data.insert_str("additional_code", html_css_add);
+        }
         if self.html.proofread && self.html.book.options.get_bool("proofread.nb_spaces").unwrap() {
             data = data.insert_bool("display_spaces", true);
         }

src/lib/latex.rs

@@ -197,6 +197,9 @@ impl<'a> LatexRenderer<'a> {
             .insert_bool("tex_title", self.book.options.get_bool("tex.title").unwrap())
             .insert_str("papersize", self.book.options.get_str("tex.paper_size").unwrap())
             .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);
+        }
         if let Ok(tex_font_size) = self.book.options.get_i32("tex.font_size") {
             data = data
                 .insert_bool("has_tex_size", true)

templates/epub/stylesheet.css

@@ -191,4 +191,6 @@ p.first-para {
 .nbsp {
     background-color: #ffff66;
 }
-{{/display_spaces}}
+{{/display_spaces}}
+
+{{{additional_code}}}

templates/html/template.css

@@ -207,3 +207,4 @@ footer p {
     width: 70%;
 }
 
+{{{additional_code}}}

templates/latex/template.tex

@@ -116,6 +116,9 @@
 \chead[\fancyplain{}{\rm\thepage}]{\fancyplain{}{\rm\thepage}}
 % Footer
 \cfoot{\fancyplain{}{}}
+
+<<&additional_code>>
+
 \makeatother
 
 \title{<<&title>>}