Implement changes suggested by Zarko and our subsequent conversations:

 - Add a way to set the minimum PDF version
 - Add a way to force the PDF version
 - Have isEncrypted return true if an /Encrypt dictionary exists even
   when we can't read the file
 - Allow qpdf_init_write to be called multiple times
 - Update some comments in headers


git-svn-id: svn+q:///qpdf/trunk@748 71b93d88-0707-0410-a8cf-f5a4172ac649

1 files changed, 20 insertions, 0 deletions

diff --git a/libqpdf/qpdf-c.cc b/libqpdf/qpdf-c.cc
index 9e2d0cbf..966d3dbb 100644
--- a/libqpdf/qpdf-c.cc
+++ b/libqpdf/qpdf-c.cc
@@ -252,6 +252,12 @@ DLL_EXPORT
 QPDF_ERROR_CODE qpdf_init_write(qpdf_data qpdf, char const* filename)
 {
     QPDF_ERROR_CODE status = QPDF_SUCCESS;
+    if (qpdf->qpdf_writer)
+    {
+	QTC::TC("qpdf", "qpdf-c called qpdf_init_write multiple times");
+	delete qpdf->qpdf_writer;
+	qpdf->qpdf_writer = 0;
+    }
     try
     {
 	qpdf->qpdf_writer = new QPDFWriter(*(qpdf->qpdf), filename);
@@ -391,6 +397,20 @@ void qpdf_set_linearization(qpdf_data qpdf, QPDF_BOOL value)
 }
 
 DLL_EXPORT
+void qpdf_set_minimum_pdf_version(qpdf_data qpdf, char const* version)
+{
+    QTC::TC("qpdf", "qpdf-c called qpdf_set_minimum_pdf_version");
+    qpdf->qpdf_writer->setMinimumPDFVersion(version);
+}
+
+DLL_EXPORT
+void qpdf_force_pdf_version(qpdf_data qpdf, char const* version)
+{
+    QTC::TC("qpdf", "qpdf-c called qpdf_force_pdf_version");
+    qpdf->qpdf_writer->forcePDFVersion(version);
+}
+
+DLL_EXPORT
 QPDF_ERROR_CODE qpdf_write(qpdf_data qpdf)
 {
     QPDF_ERROR_CODE status = QPDF_SUCCESS;