Allow reading from InputSource and writing to Pipeline

Allowing users to subclass InputSource and Pipeline to read and write
from/to arbitrary sources provides the maximum flexibility for users
who want to read and write from other than files or memory.

2 files changed, 16 insertions, 0 deletions

diff --git a/include/qpdf/QPDF.hh b/include/qpdf/QPDF.hh
index e594a44a..64858625 100644
--- a/include/qpdf/QPDF.hh
+++ b/include/qpdf/QPDF.hh
@@ -72,6 +72,13 @@ class QPDF
 			   char const* buf, size_t length,
 			   char const* password = 0);
 
+    // Parse a PDF file loaded from a custom InputSource.  If you have
+    // your own method of retrieving a PDF file, you can subclass
+    // InputSource and use this method.
+    QPDF_DLL
+    void processInputSource(PointerHolder<InputSource>,
+                            char const* password = 0);
+
     // Create a QPDF object for an empty PDF.  This PDF has no pages
     // or objects other than a minimal trailer, a document catalog,
     // and a /Pages tree containing zero pages.  Pages and other
diff --git a/include/qpdf/QPDFWriter.hh b/include/qpdf/QPDFWriter.hh
index 2c1c32f6..725b2be8 100644
--- a/include/qpdf/QPDFWriter.hh
+++ b/include/qpdf/QPDFWriter.hh
@@ -95,6 +95,15 @@ class QPDFWriter
     QPDF_DLL
     Buffer* getBuffer();
 
+    // Supply your own pipeline object.  Output will be written to
+    // this pipeline, and QPDFWriter will call finish() on the
+    // pipeline.  It is the caller's responsibility to manage the
+    // memory for the pipeline.  The pipeline is never deleted by
+    // QPDFWriter, which makes it possible for you to call additional
+    // methods on the pipeline after the writing is finished.
+    QPDF_DLL
+    void setOutputPipeline(Pipeline*);
+
     // Setting Parameters
 
     // Set the value of object stream mode.  In disable mode, we never