Remove the base/advance choice page.

[bertos.git] / bertos / kern / kfile.c

diff --git a/bertos/kern/kfile.c b/bertos/kern/kfile.c
index ab83053f9034cc79bd389790bdca1a9305147d89..d98f15484ef6a3a7c71c1832f5b7c9d95c91892a 100644 (file)
--- a/bertos/kern/kfile.c
+++ b/bertos/kern/kfile.c
@@ -44,6 +44,7 @@
 #include <cfg/debug.h>
 #include <cfg/log.h>
 
+#include <drv/timer.h>
 #include <mware/formatwr.h>
 
 #include <string.h>
@@ -195,9 +196,11 @@ kfile_off_t kfile_genericSeek(struct KFile *fd, kfile_off_t offset, KSeekMode wh
                break;
        }
 
+       #if LOG_LEVEL >= LOG_LVL_INFO
        /* Bound check */
        if (seek_pos + offset > fd->size)
                LOG_INFO("seek outside EOF\n");
+       #endif
 
        fd->seek_pos = seek_pos + offset;
 
@@ -226,3 +229,56 @@ int kfile_genericClose(UNUSED_ARG(struct KFile *, fd))
 };
 
 
+/**
+ * Discard input to resynchronize with remote end.
+ *
+ * Discard incoming data until the kfile_getc stops receiving
+ * characters for at least \a delay milliseconds.
+ *
+ * \note If the timeout occur, we reset the error before to
+ * quit.
+ */
+void kfile_resync(KFile *fd, mtime_t delay)
+{
+       ticks_t start_time = timer_clock();
+       for(;;)
+       {
+               if(kfile_getc(fd) != EOF)
+                       start_time = timer_clock();
+
+               if ((timer_clock() - start_time) > ms_to_ticks(delay))
+               {
+                       kfile_clearerr(fd);
+                       break;
+               }
+
+       }
+}
+
+/**
+ * Stub function that does nothing.
+ * This is a generic implementation that only return 0.
+ */
+static int kfile_generic(UNUSED_ARG(struct KFile *, fd))
+{
+       return 0;
+};
+
+
+/**
+ * Base class KFile constructor.
+ */
+void kfile_init(struct KFile *fd)
+{
+       ASSERT(fd);
+       memset(fd, 0, sizeof(*fd));
+       fd->clearerr = (ClearErrFunc_t)kfile_generic;
+       fd->close =  kfile_genericClose;
+       fd->error = kfile_generic;
+       fd->flush = kfile_generic;
+       fd->read = (ReadFunc_t)kfile_generic;
+       fd->reopen = kfile_genericReopen;
+       fd->seek = kfile_genericSeek;
+       fd->write = (WriteFunc_t)kfile_generic;
+}
+