1 #ifndef _STDIO_H_ 2 #define _STDIO_H_ 3 #pragma lib "/$M/lib/ape/libap.a" 4 5 /* 6 * pANS stdio.h 7 */ 8 #include <stdarg.h> 9 #include <stddef.h> 10 #include <sys/types.h> 11 /* 12 * According to X3J11, there is only one i/o buffer 13 * and it must not be occupied by both input and output data. 14 * 15 * If rp<wp, we must have state==RD and 16 * if wp<rp, we must have state==WR, so that getc and putc work correctly. 17 * On open, rp, wp and buf are set to 0, so first getc or putc will call 18 * _IO_getc or _IO_putc, which will allocate the buffer. 19 * If setvbuf(., ., _IONBF, .) is called, bufl is set to 0 and 20 * buf, rp and wp are pointed at unbuf. 21 * If setvbuf(., ., _IOLBF, .) is called, _IO_putc leaves wp and rp pointed at 22 * the end of the buffer so that it can be called on each putc to check whether 23 * it's got a newline. This nonsense is in order to avoid impacting performance 24 * of the other buffering modes more than necessary -- putting the test in putc 25 * adds many instructions that are wasted in non-_IOLBF mode: 26 * #define putc(c, f) (_IO_ctmp=(c),\ 27 * (f)->wp>=(f)->rp || (f)->flags&LINEBUF && _IO_ctmp=='\n'?\ 28 * _IO_putc(_IO_ctmp, f): *(f)->wp++=_IO_ctmp) 29 */ 30 typedef struct{ 31 int fd; /* UNIX file pointer */ 32 char flags; /* bits for must free buffer on close, line-buffered */ 33 char state; /* last operation was read, write, position, error, eof */ 34 unsigned char *buf; /* pointer to i/o buffer */ 35 unsigned char *rp; /* read pointer (or write end-of-buffer) */ 36 unsigned char *wp; /* write pointer (or read end-of-buffer) */ 37 unsigned char *lp; /* actual write pointer used when line-buffering */ 38 size_t bufl; /* actual length of buffer */ 39 unsigned char unbuf[1]; /* tiny buffer for unbuffered io (used for ungetc?) */ 40 int junk; 41 }FILE; 42 43 typedef off_t fpos_t; 44 45 #ifndef NULL 46 #ifdef __cplusplus 47 #define NULL 0 48 #else 49 #define NULL ((void*)0) 50 #endif 51 #endif 52 53 /* 54 * Third arg of setvbuf 55 */ 56 #define _IOFBF 1 /* block-buffered */ 57 #define _IOLBF 2 /* line-buffered */ 58 #define _IONBF 3 /* unbuffered */ 59 60 #define BUFSIZ 8192 /* size of setbuf buffer */ 61 #define EOF (-1) /* returned on end of file */ 62 #define FOPEN_MAX 128 /* max files open */ 63 #define FILENAME_MAX BUFSIZ /* silly filename length */ 64 #define L_tmpnam 20 /* sizeof "/tmp/abcdefghij9999 */ 65 #define L_cuserid 32 /* maximum size user name */ 66 #define L_ctermid 32 /* size of name of controlling tty */ 67 68 #ifndef SEEK_SET /* also defined in unistd.h */ 69 #define SEEK_CUR 1 70 #define SEEK_END 2 71 #define SEEK_SET 0 72 #endif 73 #define TMP_MAX 64 /* very hard to set correctly */ 74 75 #define stderr (&_IO_stream[2]) 76 #define stdin (&_IO_stream[0]) 77 #define stdout (&_IO_stream[1]) 78 79 extern FILE _IO_stream[FOPEN_MAX]; 80 81 #ifdef __cplusplus 82 extern "C" { 83 #endif 84 85 int _IO_getc(FILE *f); 86 int _IO_putc(int, FILE *); 87 void clearerr(FILE *); 88 int fclose(FILE *); 89 FILE *fdopen(const int, const char *); 90 int feof(FILE *); 91 int ferror(FILE *); 92 int fflush(FILE *); 93 int fgetc(FILE *); 94 int fgetpos(FILE *, fpos_t *); 95 char *fgets(char *, int, FILE *); 96 int fileno(FILE *); 97 FILE *fopen(const char *, const char *); 98 int fprintf(FILE *, const char *, ...); 99 int fputc(int, FILE *); 100 int fputs(const char *, FILE *); 101 size_t fread(void *, size_t, size_t, FILE *); 102 FILE *freopen(const char *, const char *, FILE *); 103 int fscanf(FILE *, const char *, ...); 104 int fseek(FILE *, long, int); 105 int fseeko(FILE *, off_t, int); 106 int fsetpos(FILE *, const fpos_t *); 107 long ftell(FILE *); 108 off_t ftello(FILE *); 109 size_t fwrite(const void *, size_t, size_t, FILE *); 110 int getc(FILE *); 111 #define getc(f) ((f)->rp>=(f)->wp? _IO_getc(f): *(f)->rp++) 112 int getchar(void); 113 #define getchar() getc(stdin) 114 char *gets(char *); 115 void perror(const char *); 116 int printf(const char *, ...); 117 int putc(int, FILE *); 118 /* assignment to f->junk eliminates warnings about unused result of operation */ 119 #define putc(c, f) ((f)->junk = ((f)->wp>=(f)->rp? \ 120 _IO_putc(c, f): (*(f)->wp++ = (c)))) 121 int putchar(int); 122 #define putchar(c) putc(c, stdout) 123 int puts(const char *); 124 int remove(const char *); 125 int rename(const char *, const char *); 126 void rewind(FILE *); 127 int scanf(const char *, ...); 128 void setbuf(FILE *, char *); 129 int setvbuf(FILE *, char *, int, size_t); 130 /* 131 * NB: C99 now requires *snprintf to return the number of characters 132 * that would have been written, had there been room. 133 */ 134 int snprintf(char *, size_t, const char *, ...); 135 int sprintf(char *, const char *, ...); 136 int sscanf(const char *, const char *, ...); 137 FILE *tmpfile(void); 138 char *tmpnam(char *); 139 int ungetc(int, FILE *); 140 int vfprintf(FILE *, const char *, va_list); 141 int vfscanf(FILE *, const char *, va_list); 142 int vprintf(const char *, va_list); 143 int vsnprintf(char *, size_t, const char *, va_list); 144 int vsprintf(char *, const char *, va_list); 145 146 #ifdef _POSIX_SOURCE 147 int fileno(FILE *); 148 FILE* fdopen(int, const char*); 149 char *ctermid(char *); 150 #endif 151 152 #ifdef _REENTRANT_SOURCE 153 char *tmpnam_r(char *); 154 char *ctermid_r(char *); 155 #endif 156 157 #ifdef _BSD_EXTENSION 158 #pragma lib "/$M/lib/ape/libbsd.a" 159 FILE *popen(char *, char *); 160 int pclose(FILE *); 161 #endif 162 163 #ifdef __cplusplus 164 } 165 #endif 166 167 #endif 168