QPDFJob: pass capture output streams through to underlying QPDF

libqpdf/QPDFJob.cc

@@ -703,6 +703,7 @@ QPDFJob::getEncryptionStatus()
 void
 QPDFJob::setQPDFOptions(QPDF& pdf)
 {
+    pdf.setOutputStreams(this->m->cout, this->m->cerr);
     if (m->ignore_xref_streams) {
         pdf.setIgnoreXRefStreams(true);
     }

qpdf/qtest/qpdf/job-api.out

@@ -5,4 +5,15 @@ usage: an input file name is required
 error caught by run
 finished config
 usage: an input file name is required
+output capture
+calling run
+captured stdout
+Object is stream.  Dictionary:
+<< /Length 44 >>
+captured stderr
+WARNING: bad2.pdf: file is damaged
+WARNING: bad2.pdf: can't find startxref
+WARNING: bad2.pdf: Attempting to reconstruct cross-reference table
+WARNING: bad2.pdf (object 4 0, offset 389): expected endobj
+qpdf: operation succeeded with warnings
 test 84 done

qpdf/test_driver.cc

@@ -1734,7 +1734,8 @@ test_46(QPDF& pdf, char const* arg2)
     }
 
     std::cout << "/Bad1" << std::endl;
-    auto bad1 = QPDFNumberTreeObjectHelper(pdf.getTrailer().getKey("/Bad1"), pdf);
+    auto bad1 =
+        QPDFNumberTreeObjectHelper(pdf.getTrailer().getKey("/Bad1"), pdf);
     assert(bad1.begin() == bad1.end());
     assert(bad1.last() == bad1.end());
 
@@ -3023,6 +3024,24 @@ test_84(QPDF& pdf, char const* arg2)
     } catch (QPDFUsage& e) {
         std::cout << "usage: " << e.what() << std::endl;
     }
+
+    std::cout << "output capture" << std::endl;
+    std::ostringstream cout;
+    std::ostringstream cerr;
+    {
+        QPDFJob j;
+        j.setOutputStreams(&cout, &cerr);
+        j.config()
+            ->inputFile("bad2.pdf")
+            ->showObject("4,0")
+            ->checkConfiguration();
+        std::cout << "calling run" << std::endl;
+        j.run();
+        std::cout << "captured stdout" << std::endl;
+        std::cout << cout.str();
+        std::cout << "captured stderr" << std::endl;
+        std::cout << cerr.str();
+    }
 }
 
 static void