fix: fatal errors on pdfs (#41)

* fix: replaced fatal with error message

Signed-off-by: Peter Staar <[email protected]>

* become more lenient with qpdf decoding errors

Signed-off-by: Peter Staar <[email protected]>

---------

Signed-off-by: Peter Staar <[email protected]>

Author: PeterStaar-IBM

src/v2/pdf_decoders/stream.h

@@ -319,8 +319,8 @@ namespace pdflib
       }
     else
       {
-        LOG_S(FATAL) << "invoking 'Q' on empty stack!";
-        throw std::logic_error(__FILE__);
+        LOG_S(ERROR) << "invoking 'Q' on empty stack!";
+        //throw std::logic_error(__FILE__);
       }    
   } 
 

src/v2/pdf_resources/page_font/cmap.h

@@ -365,13 +365,18 @@ namespace pdflib
       auto itr = src.begin();
       c = utf8::next(itr, src.end());
 
-      assert(itr==src.end());
+      //assert(itr==src.end());
     }
-    assert(csr_range.first<=c and c<=csr_range.second);
+    //assert(csr_range.first<=c and c<=csr_range.second);
 
+    if(not (csr_range.first<=c and c<=csr_range.second))
+      {
+	LOG_S(ERROR) << c << " is going out of bounds: " << csr_range.first << "," << csr_range.second;
+      }
+    
     if(_map.count(c)==1)
       {
-        LOG_S(FATAL) << "overwriting number c=" << c;
+        LOG_S(ERROR) << "overwriting number cmap[" << c << "]: " << _map.at(c) << " with " << tgt;
       }
 
     _map[c] = tgt;

src/v2/qpdf/stream_decoder.h

@@ -52,7 +52,7 @@ namespace pdflib
 
   void qpdf_stream_decoder::decode(QPDFObjectHandle& content)
   {
-    LOG_S(WARNING) << "start decoding content-stream: " << content.getTypeName() << " -> " << content.unparse();
+    LOG_S(INFO) << "start decoding content-stream: " << content.getTypeName() << " -> " << content.unparse();
 
     stream.clear();
 
@@ -62,7 +62,7 @@ namespace pdflib
       }
     catch(std::exception& e)
       {
-        LOG_S(FATAL) << e.what();
+        LOG_S(ERROR) << "QPDF encountered error (" << e.what() << ") during decoding";
       }
 
     LOG_S(WARNING) << "finished decoding content-stream!";