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; 56 return __create_file(__fd); 57 } 58 59 __extern int fclose(FILE * __f); 60 __extern int fputs(const char *, FILE *); 61 __extern int puts(const char *); 62 __extern int fputc(int, FILE *); 63 #define putc(c,f) fputc((c),(f)) 64 #define putchar(c) fputc((c),stdout) 65 66 __extern int fgetc(FILE *); 67 __extern char *fgets(char *, int, FILE *); 68 #define getc(f) fgetc(f) 69 70 __extern size_t _fread(void *, size_t, FILE *); 71 __extern size_t _fwrite(const void *, size_t, FILE *); 72 73 __extern size_t fread(void *, size_t, size_t, FILE *); 74 __extern size_t fwrite(const void *, size_t, size_t, FILE *); 75 76 #ifndef __NO_FREAD_FWRITE_INLINES 77 #define fread(__p, __s, __n, __f) \ 78 ( (__builtin_constant_p(__s) && __s == 1) \ 79 ? _fread(__p, __n, __f) \ 80 : fread(__p,__s,__n,__f) ) 81 82 #define fwrite(__p, __s, __n, __f) \ 83 ( (__builtin_constant_p(__s) && __s == 1) \ 84 ? _fwrite(__p, __n, __f) \ 85 : fwrite(__p,__s,__n,__f) ) 86 #endif 87 88 /* No seek, but we can tell */ 89 __extern long ftell(FILE *); 90 91 __extern int printf(const char *, ...); 92 __extern int vprintf(const char *, va_list); 93 __extern int fprintf(FILE *, const char *, ...); 94 __extern int vfprintf(FILE *, const char *, va_list); 95 __extern int sprintf(char *, const char *, ...); 96 __extern int vsprintf(char *, const char *, va_list); 97 __extern int snprintf(char *, size_t n, const char *, ...); 98 __extern int vsnprintf(char *, size_t n, const char *, va_list); 99 100 __extern int asprintf(char **, const char *, ...); 101 __extern int vasprintf(char **, const char *, va_list); 102 103 #define mp(f, x...) \ 104 printf("[%s()]: " f "\n", __func__,##x) 105 #define mpi() mp("enter") 106 #define mpo() mp("exit") 107 108 /* No buffering, so no flushing needed */ 109 static __inline__ int fflush(FILE * __f) 110 { 111 (void)__f; 112 return 0; 113 } 114 115 __extern int sscanf(const char *, const char *, ...); 116 __extern int vsscanf(const char *, const char *, va_list); 117 118 __extern void perror(const char *); 119 120 __extern int rename(const char *, const char *); 121 122 /* 123 * unhexchar: Convert a hexadecimal digit to the equivalent number 124 * 125 * Returns 0 if 'data' was converted succesfully, -1 otherwise. 126 */ 127 static inline int unhexchar(unsigned char *data) 128 { 129 unsigned char num = *data; 130 131 if (num >= '0' && num <= '9') { 132 *data = num - '0'; 133 return 0; 134 } else { 135 num |= 0x20; /* upper case -> lower case */ 136 if (num >= 'a' && num <= 'f') { 137 *data = num - 'a' + 10; 138 return 0; 139 } 140 } 141 142 return -1; 143 } 144 145 #endif /* _STDIO_H */ 146
