neo_doxygen: Check the project’s name.

Signed-off-by: Jean-Christophe Beaupré <jcbrinfo@users.noreply.github.com>

diff --git a/contrib/neo_doxygen/src/neo_doxygen.nit b/contrib/neo_doxygen/src/neo_doxygen.nit
index 3952d28..f4c0f50 100644 (file)
--- a/contrib/neo_doxygen/src/neo_doxygen.nit
+++ b/contrib/neo_doxygen/src/neo_doxygen.nit
@@ -39,6 +39,7 @@ class NeoDoxygenJob
        # * `dir`: Doxygen XML output directory path.
        # * `source`: The language-specific logics to use.
        fun load_project(name: String, dir: String, source: SourceLanguage) do
+               check_name name
                model = new ProjectGraph(name)
                # TODO Let the user select the language.
                var reader = new CompoundFileReader(model, source)
@@ -63,6 +64,22 @@ class NeoDoxygenJob
                end
        end
 
+       # Check the project’s name.
+       private fun check_name(name: String) do
+               assert name_valid: not name.chars.first.is_upper else
+                       sys.stderr.write("{sys.program_name}: The project’s name must not" +
+                                       " begin with an upper case letter. Got `{name}`.\n")
+               end
+               var query = new CypherQuery.from_string("match n where \{name\} in labels(n) return count(n)")
+               query.params["name"] = name
+               var data = client.cypher(query).as(JsonObject)["data"]
+               var result = data.as(JsonArray).first.as(JsonArray).first.as(Int)
+               assert name_unused: result == 0 else
+                       sys.stderr.write("{sys.program_name}: The label `{name}` is already" +
+                       " used in the specified graph.\n")
+               end
+       end
+
        # Save the graph.
        fun save do
                model.put_edges