From af464de1f3ff543d9ed33a3ade9d16d5cd7271b5 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Wed, 23 Jul 2025 02:20:13 +0200
Subject: [PATCH] io: Deprecate xmlOutputBuffer members

---
 include/libxml/xmlIO.h | 20 ++++++++++++--------
 python/libxml.c        |  2 ++
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/include/libxml/xmlIO.h b/include/libxml/xmlIO.h
index 6ebd6381..3090215b 100644
--- a/include/libxml/xmlIO.h
+++ b/include/libxml/xmlIO.h
@@ -148,16 +148,20 @@ struct _xmlParserInputBuffer {
  * Output buffer
  */
 struct _xmlOutputBuffer {
-    void*                   context;
-    xmlOutputWriteCallback  writecallback;
-    xmlOutputCloseCallback  closecallback;
+    void*                   context XML_DEPRECATED_MEMBER;
+    xmlOutputWriteCallback  writecallback XML_DEPRECATED_MEMBER;
+    xmlOutputCloseCallback  closecallback XML_DEPRECATED_MEMBER;
 
-    xmlCharEncodingHandler *encoder; /* I18N conversions to UTF-8 */
+    /* I18N conversions to UTF-8 */
+    xmlCharEncodingHandler *encoder XML_DEPRECATED_MEMBER;
 
-    xmlBuf *buffer;    /* Local buffer encoded in UTF-8 or ISOLatin */
-    xmlBuf *conv;      /* if encoder != NULL buffer for output */
-    int written;            /* total number of byte written */
-    int error;
+    /* Local buffer encoded in UTF-8 or ISOLatin */
+    xmlBuf *buffer XML_DEPRECATED_MEMBER;
+    /* if encoder != NULL buffer for output */
+    xmlBuf *conv XML_DEPRECATED_MEMBER;
+    /* total number of byte written */
+    int written XML_DEPRECATED_MEMBER;
+    int error XML_DEPRECATED_MEMBER;
 };
 #endif /* LIBXML_OUTPUT_ENABLED */
 
diff --git a/python/libxml.c b/python/libxml.c
index ba2c8d44..c35ebff4 100644
--- a/python/libxml.c
+++ b/python/libxml.c
@@ -516,6 +516,7 @@ libxml_outputBufferGetPythonFile(ATTRIBUTE_UNUSED PyObject *self,
 	Py_INCREF(Py_None);
 	return(Py_None);
     }
+XML_IGNORE_DEPRECATION_WARNINGS
     if (obj->closecallback != xmlPythonFileClose) {
 	fprintf(stderr,
 	        "outputBufferGetPythonFile: not a python file wrapper\n");
@@ -527,6 +528,7 @@ libxml_outputBufferGetPythonFile(ATTRIBUTE_UNUSED PyObject *self,
 	Py_INCREF(Py_None);
 	return(Py_None);
     }
+XML_POP_WARNINGS
     Py_INCREF(file);
     return(file);
 }