input_stream: make seek(), buffer() optional

Make those two methods optional to implement, and let input_stream.c
provide fallbacks.  The buffer() method will be removed one day, and
there is now only one implementation left (input_curl.c).

3 files changed, 0 insertions, 37 deletions

diff --git a/src/archive/bz2_plugin.c b/src/archive/bz2_plugin.c
index 6067d2acc..d7f33e383 100644
--- a/src/archive/bz2_plugin.c
+++ b/src/archive/bz2_plugin.c
@@ -256,19 +256,6 @@ bz2_is_eof(struct input_stream *is)
 	return false;
 }
 
-static bool
-bz2_is_seek(G_GNUC_UNUSED struct input_stream *is,
-	G_GNUC_UNUSED off_t offset, G_GNUC_UNUSED int whence)
-{
-	return false;
-}
-
-static int
-bz2_is_buffer(G_GNUC_UNUSED struct input_stream *is)
-{
-	return 0;
-}
-
 /* exported structures */
 
 static const char *const bz2_extensions[] = {
@@ -280,8 +267,6 @@ static const struct input_plugin bz2_inputplugin = {
 	.close = bz2_is_close,
 	.read = bz2_is_read,
 	.eof = bz2_is_eof,
-	.seek = bz2_is_seek,
-	.buffer = bz2_is_buffer
 };
 
 const struct archive_plugin bz2_plugin = {
diff --git a/src/archive/iso_plugin.c b/src/archive/iso_plugin.c
index de5582e2c..b5ac7f6ca 100644
--- a/src/archive/iso_plugin.c
+++ b/src/archive/iso_plugin.c
@@ -211,19 +211,6 @@ iso_is_eof(struct input_stream *is)
 	return (context->cur_ofs == context->statbuf->size);
 }
 
-static bool
-iso_is_seek(G_GNUC_UNUSED struct input_stream *is,
-	G_GNUC_UNUSED off_t offset, G_GNUC_UNUSED int whence)
-{
-	return false;
-}
-
-static int
-iso_is_buffer(G_GNUC_UNUSED struct input_stream *is)
-{
-	return 0;
-}
-
 /* exported structures */
 
 static const char *const iso_extensions[] = {
@@ -235,8 +222,6 @@ static const struct input_plugin iso_inputplugin = {
 	.close = iso_is_close,
 	.read = iso_is_read,
 	.eof = iso_is_eof,
-	.seek = iso_is_seek,
-	.buffer = iso_is_buffer
 };
 
 const struct archive_plugin iso_plugin = {
diff --git a/src/archive/zip_plugin.c b/src/archive/zip_plugin.c
index 9df449ab5..7231d4904 100644
--- a/src/archive/zip_plugin.c
+++ b/src/archive/zip_plugin.c
@@ -167,12 +167,6 @@ zip_is_seek(G_GNUC_UNUSED struct input_stream *is,
 	return false;
 }
 
-static int
-zip_is_buffer(G_GNUC_UNUSED struct input_stream *is)
-{
-	return 0;
-}
-
 /* exported structures */
 
 static const char *const zip_extensions[] = {
@@ -185,7 +179,6 @@ static const struct input_plugin zip_inputplugin = {
 	.read = zip_is_read,
 	.eof = zip_is_eof,
 	.seek = zip_is_seek,
-	.buffer = zip_is_buffer
 };
 
 const struct archive_plugin zip_plugin = {