[librsvg: 3/20] xmlSAXHandler: add prototypes for the startElementNs and endElementNs

[Federico Mena Quintero <federico src gnome org>]

commit bd49bec464fd57e2a10b6af0427d9ec7ef29e96e
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue May 28 17:40:45 2019 -0500

    xmlSAXHandler: add prototypes for the startElementNs and endElementNs
    
    These will let us get start_element / end_element SAX events with XML
    namespaces.

 rsvg_internals/src/xml2.rs | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)
---
diff --git a/rsvg_internals/src/xml2.rs b/rsvg_internals/src/xml2.rs
index 79b30716..f7dbf39e 100644
--- a/rsvg_internals/src/xml2.rs
+++ b/rsvg_internals/src/xml2.rs
@@ -14,6 +14,8 @@ pub const XML_PARSE_NONET:     libc::c_int = 1 << 11;
 pub const XML_PARSE_HUGE:      libc::c_int = 1 << 19;
 pub const XML_PARSE_BIG_LINES: libc::c_int = 1 << 22;
 
+pub const XML_SAX2_MAGIC: libc::c_uint = 0xDEEDBEAF;
+
 pub type xmlDocPtr = gpointer;
 
 pub type xmlEntityPtr = gpointer;
@@ -110,8 +112,24 @@ pub struct xmlSAXHandler {
 
     pub _private: gpointer,
 
-    pub startElementNs: UnusedFn,
-    pub endElementNs:   UnusedFn,
+    pub startElementNs: Option<unsafe extern "C" fn(
+        ctx: *mut libc::c_void,
+        localname: *mut libc::c_char,
+       prefix: *mut libc::c_char,
+       uri: *mut libc::c_char,
+       nb_namespaces: libc::c_int,
+       namespaces: *mut *mut libc::c_char,
+       nb_attributes: libc::c_int,
+       nb_defaulted: libc::c_int,
+       attributes: *mut *mut libc::c_char,
+    )>,
+
+    pub endElementNs: Option<unsafe extern "C" fn(
+        ctx: *mut libc::c_void,
+        localname: *mut libc::c_char,
+       prefix: *mut libc::c_char,
+       uri: *mut libc::c_char,
+    )>,
 
     pub serror: Option<unsafe extern "C" fn(user_data: *mut libc::c_void, error: xmlErrorPtr)>,
 }