[WIP] add a buffer for ungetc

2014-01-16 18:42:10 +09:00
parent 9897f7581f
commit 4e495c6fcc
2 changed files with 10 additions and 0 deletions
@@ -15,11 +15,19 @@ enum pic_port_status {
  PIC_PORT_CLOSE,
 };

+#define PIC_UBUFSIZ 3
+
 typedef struct {
+  /* buffered IO */
  char *buf;
  int mode;
  int bufsiz;
  char *s, *c, *e;
+  /* ungetc buf */
+  char ub[PIC_UBUFSIZ];
+  int us;
+  int ur;
+  /* operators */
  struct {
    void *cookie;
    int (*read)(void *, char *, int);