com32/include/stdio.h

   1 /*
   2  * stdio.h
   3  */
   4
   5 #ifndef _STDIO_H
   6 #define _STDIO_H
   7
   8 #include <klibc/extern.h>
   9 #include <stdarg.h>
  10 #include <stddef.h>
  11
  12 /* This structure doesn't really exist, but it gives us something
  13    to define FILE * with */
  14 struct _IO_file;
  15 typedef struct _IO_file FILE;
  16
  17 #ifndef EOF
  18 # define EOF (-1)
  19 #endif
  20
  21 #ifndef BUFSIZ
  22 # define BUFSIZ 4096
  23 #endif
  24
  25 #define SEEK_SET 0
  26 #define SEEK_CUR 1
  27 #define SEEK_END 2
  28
  29 /*
  30  * Convert between a FILE * and a file descriptor.  We don't actually
  31  * have any in-memory data, so we just abuse the pointer itself to
  32  * hold the data.  Note, however, that for file descriptors, -1 is
  33  * error and 0 is a valid value; for FILE *, NULL (0) is error and
  34  * non-NULL are valid.
  35  */
  36 static __inline__ int fileno(FILE *__f)
  37 {
  38   /* This should really be intptr_t, but size_t should be the same size */
  39   return (int)(size_t)__f - 1;
  40 }
  41
  42 /* This is a macro so it can be used as initializer */
  43 #define __create_file(__fd) ((FILE *)(size_t)((__fd) + 1))
  44
  45 #define stdin  __create_file(0)
  46 #define stdout __create_file(1)
  47 #define stderr __create_file(2)
  48
  49 __extern FILE *fopen(const char *, const char *);
  50 struct dev_info;
  51 __extern FILE *fopendev(const struct dev_info *, const char *);
  52
  53 static __inline__ FILE *fdopen(int __fd, const char *__m)
  54 {
  55   (void)__m; return __create_file(__fd);
  56 }
  57 static __inline__ int fclose(FILE *__f)
  58 {
  59   extern int close(int);
  60   return close(fileno(__f));
  61 }
  62
  63 __extern int fputs(const char *, FILE *);
  64 __extern int puts(const char *);
  65 __extern int fputc(int, FILE *);
  66 #define putc(c,f)  fputc((c),(f))
  67 #define putchar(c) fputc((c),stdout)
  68
  69 __extern int    fgetc(FILE *);
  70 __extern char * fgets(char *, int, FILE *);
  71 #define getc(f) fgetc(f)
  72
  73 __extern size_t _fread(void *, size_t, FILE *);
  74 __extern size_t _fwrite(const void *, size_t, FILE *);
  75
  76 #ifndef __NO_FREAD_FWRITE_INLINES
  77 extern __inline__ size_t
  78 fread(void *__p, size_t __s, size_t __n, FILE *__f)
  79 {
  80   return _fread(__p, __s*__n, __f)/__s;
  81 }
  82
  83 extern __inline__ size_t
  84 fwrite(void *__p, size_t __s, size_t __n, FILE *__f)
  85 {
  86   return _fwrite(__p, __s*__n, __f)/__s;
  87 }
  88 #endif
  89
  90 /* No seek, but we can tell */
  91 __extern long ftell(FILE *);
  92
  93 __extern int printf(const char *, ...);
  94 __extern int vprintf(const char *, va_list);
  95 __extern int fprintf(FILE *, const char *, ...);
  96 __extern int vfprintf(FILE *, const char *, va_list);
  97 __extern int sprintf(char *, const char *, ...);
  98 __extern int vsprintf(char *, const char *, va_list);
  99 __extern int snprintf(char *, size_t n, const char *, ...);
 100 __extern int vsnprintf(char *, size_t n, const char *, va_list);
 101
 102 __extern int asprintf(char **, const char *, ...);
 103 __extern int vasprintf(char **, const char *, va_list);
 104
 105 /* No buffering, so no flushing needed */
 106 extern __inline__ int
 107 fflush(FILE *__f)
 108 {
 109   (void)__f;
 110   return 0;
 111 }
 112
 113 __extern int sscanf(const char *, const char *, ...);
 114 __extern int vsscanf(const char *, const char *, va_list);
 115
 116 __extern void perror(const char *);
 117
 118 __extern int rename(const char *, const char *);
 119
 120 #endif /* _STDIO_H */