Chore(REMOVE): finished deprecation of old io functions.

The old methods were simple wrappers of C standard library functions.
We've moved (painfully) over to a new interface that allows for files to
live on the stack. All users of the functionality are ported over.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/base/io/ungetc.c b/src/base/io/ungetc.c
new file mode 100644
index 0000000..201ffd6
--- /dev/null
+++ b/src/base/io/ungetc.c
@@ -0,0 +1,13 @@
+#include "internal.h"
+
+int
+io·ungetc(io·Header *io)
+{
+    if(io->state == io·BufEnd)
+        io->state = io·BufRdr;
+    if(io->state != io·BufRdr)
+        return io·BufEof;
+
+    io->ilen--;
+    return 0;
+}