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path: root/lib/io/src/win32/istream.c
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Diffstat (limited to 'lib/io/src/win32/istream.c')
-rw-r--r--lib/io/src/win32/istream.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/io/src/win32/istream.c b/lib/io/src/win32/istream.c
index be3d829..918b868 100644
--- a/lib/io/src/win32/istream.c
+++ b/lib/io/src/win32/istream.c
@@ -23,6 +23,21 @@ static int file_precache(istream_t *strm)
DWORD diff, actual;
HANDLE hnd;
+ if (strm->buffer_offset >= strm->buffer_used) {
+ strm->buffer_offset = 0;
+ strm->buffer_used = 0;
+ } else if (strm->buffer_offset > 0) {
+ memmove(strm->buffer,
+ strm->buffer + strm->buffer_offset,
+ strm->buffer_used - strm->buffer_offset);
+
+ strm->buffer_used -= strm->buffer_offset;
+ strm->buffer_offset = 0;
+ }
+
+ if (strm->eof)
+ return 0;
+
hnd = file->path == NULL ? GetStdHandle(STD_INPUT_HANDLE) : file->hnd;
while (strm->buffer_used < sizeof(file->buffer)) {