stdio.h

lcc,一个可变目标c语言编译器的源码

#ifndef __STDIO
#define __STDIO

#define _IOFBF 0
#define _IOLBF 0200
#define _IONBF 04
#define BUFSIZ 8192
#define EOF (-1)

typedef struct _iobuf {
	int	_cnt;
	unsigned char	*_ptr;
	unsigned char	*_base;
	int	_bufsiz;
	short	_flag;
	short	_file;
	char    *__newbase;
	void    *_lock;
	unsigned char	*_bufendp;
} FILE;
extern FILE _iob[];
#define FILENAME_MAX 255
#define FOPEN_MAX 64

#if !defined(_FPOS_T) && !defined(_FPOS_T_) && !defined(_FPOS_T_DEFINED)
#define _FPOS_T
#define _FPOS_T_
#define _FPOS_T_DEFINED
typedef long fpos_t;
#endif

#define L_tmpnam 21
#ifndef NULL
#define NULL ((void*)0)
#endif
#define SEEK_CUR 1
#define SEEK_END 2
#define SEEK_SET 0

#if !defined(_SIZE_T) && !defined(_SIZE_T_) && !defined(_SIZE_T_DEFINED)
#define _SIZE_T
#define _SIZE_T_
#define _SIZE_T_DEFINED
typedef unsigned long size_t;
#endif

#if !defined(_VA_LIST) && !defined(_VA_LIST_DEFINED)
#define _VA_LIST
#define _VA_LIST_DEFINED
typedef struct {
	char	*_a0;		/* pointer to first homed integer arg */
	int	_offset;	/* byte offset of next param */
	float	_tmp;
} __va_list;
#endif

#define stderr (&_iob[2])
#define stdin  (&_iob[0])
#define stdout (&_iob[1])
#define TMP_MAX 16384

extern int remove(const char *);
extern int rename(const char *, const char *);
extern FILE *tmpfile(void);
extern char *tmpnam(char *);
extern int fclose(FILE *);
extern int fflush(FILE *);
extern FILE *fopen(const char *, const char *);
extern FILE *freopen(const char *, const char *, FILE *);
extern void setbuf(FILE *, char *);
extern int setvbuf(FILE *, char *, int, size_t);
extern int fprintf(FILE *, const char *, ...);
extern int fscanf(FILE *, const char *, ...);
extern int printf(const char *, ...);
extern int scanf(const char *, ...);
extern int sprintf(char *, const char *, ...);
extern int sscanf(const char *, const char *, ...);
extern int vfprintf(FILE *, const char *, __va_list);
extern int vprintf(const char *, __va_list);
extern int vsprintf(char *, const char *, __va_list);
extern int fgetc(FILE *);
extern char *fgets(char *, int, FILE *);
extern int fputc(int, FILE *);
extern int fputs(const char *, FILE *);
extern int getc(FILE *);
extern int getchar(void);
extern char *gets(char *);
extern int putc(int, FILE *);
extern int putchar(int);
extern int puts(const char *);
extern int ungetc(int, FILE *);
extern size_t fread(void *, size_t, size_t, FILE *);
extern size_t fwrite(const void *, size_t, size_t, FILE *);
extern int fgetpos(FILE *, fpos_t *);
extern int fseek(FILE *, long int, int);
extern int fsetpos(FILE *, const fpos_t *);
extern long int ftell(FILE *);
extern void rewind(FILE *);
extern void clearerr(FILE *);
extern int feof(FILE *);
extern int ferror(FILE *);
extern void perror(const char *);

#define	_IOEOF 020
#define	_IOERR 040

#define getc(p) (--(p)->_cnt < 0 ? _filbuf(p) : (int) *(p)->_ptr++)
#define putc(x, p) (--(p)->_cnt < 0 ? \
	_flsbuf((unsigned char) (x), p) : \
	(int) (*(p)->_ptr++ = (unsigned char) (x)))
extern int _filbuf(FILE *), _flsbuf(unsigned, FILE *);
#endif /* __STDIO */