Daniel Shahaf <d...@daniel.shahaf.name> writes:
> Perhaps invent an "I speak svndiff1" wire capability and make 1.10
> servers advertise it? I get that the workaround implemented is
> necessary for interoperating with released servers, but we could at
> least do it right from now on.
Makes sense. Something along these lines?
[[[
Index: subversion/include/svn_dav.h
===================================================================
--- subversion/include/svn_dav.h (revision 1704592)
+++ subversion/include/svn_dav.h (working copy)
@@ -386,7 +386,16 @@ extern "C" {
#define SVN_DAV_NS_DAV_SVN_REVERSE_FILE_REVS\
SVN_DAV_PROP_NS_DAV "svn/reverse-file-revs"
+/** Presence of this in a DAV header in an OPTIONS response indicates
+ * that the transmitter (in this case, the server) knows how to handle
+ * svndiff1 format encoding.
+ *
+ * @since New in 1.10.
+ */
+#define SVN_DAV_NS_DAV_SVN_SVNDIFF1\
+ SVN_DAV_PROP_NS_DAV "svn/svndiff1"
+
/** @} */
/** @} */
Index: subversion/libsvn_ra_serf/options.c
===================================================================
--- subversion/libsvn_ra_serf/options.c (revision 1704592)
+++ subversion/libsvn_ra_serf/options.c (working copy)
@@ -226,6 +226,12 @@ capabilities_headers_iterator_callback(void *baton
{
session->supports_rev_rsrc_replay = TRUE;
}
+ if (svn_cstring_match_list(SVN_DAV_NS_DAV_SVN_SVNDIFF1, vals))
+ {
+ /* Use compressed svndiff1 format for servers that properly
+ advertise this capability (Subversion 1.10 and greater). */
+ session->supports_svndiff1 = TRUE;
+ }
}
/* SVN-specific headers -- if present, server supports HTTP protocol v2 */
@@ -243,7 +249,8 @@ capabilities_headers_iterator_callback(void *baton
apr_hash_set(session->supported_posts, "create-txn", 10, (void *)1);
}
- /* Use compressed svndiff1 format for servers that speak HTTPv2.
+ /* Use compressed svndiff1 format for servers that speak HTTPv2,
+ in addition to servers that send SVN_DAV_NS_DAV_SVN_SVNDIFF1.
Apache HTTPd + mod_dav_svn servers support svndiff1, beginning
from Subversion 1.4, but they do not advertise this capability.
Index: subversion/mod_dav_svn/version.c
===================================================================
--- subversion/mod_dav_svn/version.c (revision 1704592)
+++ subversion/mod_dav_svn/version.c (working copy)
@@ -152,6 +152,7 @@ get_vsn_options(apr_pool_t *p, apr_text_header *ph
apr_text_append(p, phdr, SVN_DAV_NS_DAV_SVN_INHERITED_PROPS);
apr_text_append(p, phdr, SVN_DAV_NS_DAV_SVN_INLINE_PROPS);
apr_text_append(p, phdr, SVN_DAV_NS_DAV_SVN_REVERSE_FILE_REVS);
+ apr_text_append(p, phdr, SVN_DAV_NS_DAV_SVN_SVNDIFF1);
/* Mergeinfo is a special case: here we merely say that the server
* knows how to handle mergeinfo -- whether the repository does too
* is a separate matter.
]]]
Regards,
Evgeny Kotkov
