Make suggested changes

src/DataCite.jl

@@ -1,6 +1,8 @@
 struct DataCite <: DataRepo
 end
 
+base_url(::DataCite) = "https://api.datacite.org/works/"
+
 function description(repo::DataCite, mainpage)
     attributes = mainpage["attributes"]
     desc = attributes["description"]
@@ -10,7 +12,7 @@ function description(repo::DataCite, mainpage)
     date = attributes["published"]
     paper = format_papers(authors, date, attributes["title"] * " [Data set]. " * attributes["container-title"] * ".", mainpage["id"])
 
-    final = escape_multiline_string("""
+    escape_multiline_string("""
     Author: $(author)
     License: $(license)
     Date: $(date)
@@ -38,13 +40,13 @@ function data_fullname(::DataCite, mainpage)
 end
 
 function website(repo::DataCite, mainpage_url)
-    replace(mainpage_url, "https://api.datacite.org/works/", "https://doi.org/")
+    replace(mainpage_url, base_url(repo), "https://doi.org/")
 end
 
 function mainpage_url(repo::DataCite, dataname)
     try
-        identifier = match(r"\b(10[.][0-9]{4,}(?:[.][0-9]+)*\/(?:(?![\"&\'<>])\S)+)\b", dataname).match
-        url = "https://api.datacite.org/works/" * identifier
+        identifier = check_dois(dataname)
+        url = base_url(repo) * identifier
         JSON.parse(text_only(getpage(url).root))["data"], url
     catch ErrorException
         error("Please use a valid url")

src/DataDepsGenerators.jl

@@ -114,6 +114,11 @@ function format_papers(authors::Vector, year::String, name::String, link::String
     join(authors, ", ") * " ($year). " * name * " " * link
 end
 
+function check_dois(uri::String)
+    identifier = match(r"\b(10[.][0-9]{4,}(?:[.][0-9]+)*\/(?:(?![\"&\'<>])\S)+)\b", uri).match
+    return identifier
+end
+
 website(::DataRepo, mainpage_url) = mainpage_url
 
 function mainpage_url(repo::DataRepo, dataname)