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[WIP] add a buffer for ungetc

This commit is contained in:
Yuichi Nishiwaki 2014-01-16 18:41:55 +09:00
parent 9897f7581f
commit 4e495c6fcc
2 changed files with 10 additions and 0 deletions
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8
include/picrin/port.h
View File

@ -15,11 +15,19 @@ enum pic_port_status {
PIC_PORT_CLOSE, PIC_PORT_CLOSE,
}; };
#define PIC_UBUFSIZ 3
typedef struct { typedef struct {
/* buffered IO */
char *buf; char *buf;
int mode; int mode;
int bufsiz; int bufsiz;
char *s, *c, *e; char *s, *c, *e;
/* ungetc buf */
char ub[PIC_UBUFSIZ];
int us;
int ur;
/* operators */
struct { struct {
void *cookie; void *cookie;
int (*read)(void *, char *, int); int (*read)(void *, char *, int);

2
src/port.c
View File

@ -94,6 +94,8 @@ pic_funopen(void *cookie,
file->buf = NULL; file->buf = NULL;
file->mode = _IONBF; file->mode = _IONBF;
file->bufsiz = 0; file->bufsiz = 0;
file->us = PIC_UBUFSIZ;
file->ur = 0;
/* set vtable */ /* set vtable */
file->vtable.cookie = cookie; file->vtable.cookie = cookie;
file->vtable.read = read; file->vtable.read = read;