Support underscore in the exporters on titles

Underscores on titles are meant to be replaced by something else on each
exporter (e.g. removed on CSV, or surrounded by \emph on UOC).

Signed-off-by: Miquel Sabaté Solà <msabate@suse.com>

1 files changed, 20 insertions, 1 deletions

diff --git a/lib/uoc_exporter.rb b/lib/uoc_exporter.rb
index 9a83d7c..e8dcc62 100644
--- a/lib/uoc_exporter.rb
+++ b/lib/uoc_exporter.rb
@@ -16,7 +16,7 @@ class UocExporter < BaseExporter
   # Returns the head of a line, containing authors, year, title and, if
   # available, the "inside of" information.
   def head(thing:)
-    str = "#{parse_authors(thing:)} (#{thing.year}). \\emph{#{thing.title}}."
+    str = "#{parse_authors(thing:)} (#{thing.year}). #{parse_title(title: thing.title)}."
 
     if thing.insideof.present?
       str += " #{inside_of(thing.insideof)}"
@@ -26,6 +26,25 @@ class UocExporter < BaseExporter
     str
   end
 
+  # Returns the title without underscores and with the expected formatting.
+  def parse_title(title:)
+    str = ''
+    seen = false
+
+    # I'm sure there is a clever (and comboluted) regexp that can also achieve
+    # this, but after some tries I decided to cut the crap.
+    title.each_char do |c|
+      if c == '_'
+        str += seen ? '\emph{' : '}'
+        seen = !seen
+      else
+        str += c
+      end
+    end
+
+    "\\emph{#{str}}"
+  end
+
   # Parse the authors as delivered by `thing.authors` and render them in the
   # proper format.
   def parse_authors(thing:)