jwrapper: accept output files that do not look like Nit modules

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/contrib/jwrapper/src/code_generator.nit b/contrib/jwrapper/src/code_generator.nit
index ed456f6..917074d 100644 (file)
--- a/contrib/jwrapper/src/code_generator.nit
+++ b/contrib/jwrapper/src/code_generator.nit
@@ -26,12 +26,20 @@ class CodeGenerator
        var file_out: OFStream
        var java_class: JavaClass
        var nb_params: Int
-       var module_name: String
+       var module_name: nullable String = null
 
        init (file_name: String, jclass: JavaClass, with_attributes, comment: Bool)
        do
                file_out = new OFStream.open(file_name)
-               module_name = file_name.substring(0, file_name.search(".nit").from)
+
+               var nit_ext = ".nit"
+               if file_name.has_suffix(nit_ext) then
+                       # Output file ends with .nit, we expect it to be a valid name
+                       module_name = file_name.strip_extension(nit_ext)
+
+                       # Otherwise, it may be anything so do not declare a module
+               end
+
                self.java_class = jclass
                self.with_attributes = with_attributes
                self.comment_unknown_types = comment
@@ -71,7 +79,11 @@ class CodeGenerator
                end
 
                file_out.write(gen_licence)
-               file_out.write("module {module_name}\n")
+
+               var module_name = module_name
+               if module_name != null then file_out.write "module {module_name}\n"
+
+               file_out.write("\n")
                file_out.write(imports.join(""))
                file_out.write("\n")
                file_out.write(class_content.join(""))