[pdf2htmlEX_exe] Use the same return values as JNI version is using.

Author: ViliusSutkus89

dependency-builder/src/main/cpp/packages/pdf2htmlEX-Patch-Source-pdf2htmlEX-set-return-values-in-exe-instead-of-throwing-exceptions.patch

@@ -0,0 +1,31 @@
+--- pdf2htmlEX.cc	2020-06-08 17:39:30.027000000 +0300
++++ pdf2htmlEX.cc	2020-06-08 17:55:56.809000000 +0300
+@@ -406,14 +406,24 @@
+         }
+ 
+         if (!doc->isOk())
+-            throw "Cannot read the file";
++        {
++            int errCode = doc->getErrorCode();
++            std::cerr << std::to_string(errCode) << std::endl;
++            if (errCode == errEncrypted) {
++                return 2;
++            } else {
++                return 1;
++            }
++        }
+ 
+         // check for copy permission
+         if (!doc->okToCopy())
+         {
+-            if (param.no_drm == 0)
+-                throw "Copying of text from this document is not allowed.";
+-            cerr << "Document has copy-protection bit set." << endl;
++            std::cerr << "Document has copy-protection bit set." << std::endl;
++            if (param->no_drm == 0) {
++                std::cerr << "Copying of text from this document is not allowed." << std::endl;
++                return 3;
++            }
+         }
+ 
+         param.first_page = min<int>(max<int>(param.first_page, 1), doc->getNumPages());