8.4: initial commit

1 files changed, 50 insertions, 0 deletions

diff --git a/8.4/stdio.h b/8.4/stdio.h
new file mode 100644
index 0000000..37413a2
--- /dev/null
+++ b/8.4/stdio.h
@@ -0,0 +1,50 @@
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stddef.h>
+
+#define EOF	(-1)
+#define BUFSIZ	8192
+#define OPN_MAX	20
+
+typedef struct {
+	int cnt;
+	char *ptr;
+	char *base;
+	int flag;
+	int fd;
+} FILE;
+
+extern FILE _iob[OPN_MAX];
+
+#define stdin	(_iob+0)
+#define stdout	(_iob+1)
+#define stderr	(_iob+2)
+
+enum flags {
+	_READ 	= 1 << 0,
+	_WRITE 	= 1 << 2,
+	_UNBUF	= 1 << 3,
+	_EOF	= 1 << 4,
+	_ERR	= 1 << 5
+};
+
+int _fillbuf(FILE *);
+int _flushbuf(int, FILE *);
+FILE *fopen(char *name, char *mode);
+int fflush(FILE *fp);
+int fseek(FILE *fp, ssize_t os, int whence);
+int fclose(FILE *fp);
+int puts(const char *);
+
+#define feof(p)	  ((p)->flag & _EOF)
+#define ferror(p) ((p)->flag & _ERR)
+#define fileno(p) ((p)->fd)
+
+#define getc(p)	   ((--(p)->cnt >= 0) \
+		? (unsigned char) *(p)->ptr++ : _fillbuf(p))
+#define putc(x, p) ((--(p)->cnt >= 0) \
+		? *(p)->ptr++ = (x) : _flushbuf(x, p))
+
+#define getchar()  getc(stdin)
+#define putchar(x) putc((x), stdout)