146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/*
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* stdio.h
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*/
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#ifndef _STDIO_H
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#define _STDIO_H
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#include <klibc/extern.h>
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#include <stdarg.h>
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#include <stddef.h>
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/* This structure doesn't really exist, but it gives us something
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to define FILE * with */
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struct _IO_file;
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typedef struct _IO_file FILE;
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#ifndef EOF
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# define EOF (-1)
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#endif
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#ifndef BUFSIZ
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# define BUFSIZ 4096
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#endif
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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/*
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* Convert between a FILE * and a file descriptor. We don't actually
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* have any in-memory data, so we just abuse the pointer itself to
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* hold the data. Note, however, that for file descriptors, -1 is
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* error and 0 is a valid value; for FILE *, NULL (0) is error and
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* non-NULL are valid.
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*/
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static __inline__ int fileno(FILE * __f)
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{
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/* This should really be intptr_t, but size_t should be the same size */
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return (int)(size_t) __f - 1;
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}
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/* This is a macro so it can be used as initializer */
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#define __create_file(__fd) ((FILE *)(size_t)((__fd) + 1))
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#define stdin __create_file(0)
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#define stdout __create_file(1)
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#define stderr __create_file(2)
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__extern FILE *fopen(const char *, const char *);
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struct dev_info;
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__extern FILE *fopendev(const struct dev_info *, const char *);
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static __inline__ FILE *fdopen(int __fd, const char *__m)
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{
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(void)__m;
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return __create_file(__fd);
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}
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__extern int fclose(FILE * __f);
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__extern int fputs(const char *, FILE *);
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__extern int puts(const char *);
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__extern int fputc(int, FILE *);
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#define putc(c,f) fputc((c),(f))
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#define putchar(c) fputc((c),stdout)
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__extern int fgetc(FILE *);
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__extern char *fgets(char *, int, FILE *);
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#define getc(f) fgetc(f)
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__extern size_t _fread(void *, size_t, FILE *);
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__extern size_t _fwrite(const void *, size_t, FILE *);
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__extern size_t fread(void *, size_t, size_t, FILE *);
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__extern size_t fwrite(const void *, size_t, size_t, FILE *);
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#ifndef __NO_FREAD_FWRITE_INLINES
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#define fread(__p, __s, __n, __f) \
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( (__builtin_constant_p(__s) && __s == 1) \
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? _fread(__p, __n, __f) \
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: fread(__p,__s,__n,__f) )
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#define fwrite(__p, __s, __n, __f) \
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( (__builtin_constant_p(__s) && __s == 1) \
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? _fwrite(__p, __n, __f) \
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: fwrite(__p,__s,__n,__f) )
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#endif
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/* No seek, but we can tell */
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__extern long ftell(FILE *);
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__extern int printf(const char *, ...);
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__extern int vprintf(const char *, va_list);
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__extern int fprintf(FILE *, const char *, ...);
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__extern int vfprintf(FILE *, const char *, va_list);
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__extern int sprintf(char *, const char *, ...);
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__extern int vsprintf(char *, const char *, va_list);
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__extern int snprintf(char *, size_t n, const char *, ...);
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__extern int vsnprintf(char *, size_t n, const char *, va_list);
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__extern int asprintf(char **, const char *, ...);
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__extern int vasprintf(char **, const char *, va_list);
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#define mp(f, x...) \
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printf("[%s()]: " f "\n", __func__,##x)
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#define mpi() mp("enter")
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#define mpo() mp("exit")
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/* No buffering, so no flushing needed */
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static __inline__ int fflush(FILE * __f)
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{
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(void)__f;
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return 0;
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}
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__extern int sscanf(const char *, const char *, ...);
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__extern int vsscanf(const char *, const char *, va_list);
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__extern void perror(const char *);
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__extern int rename(const char *, const char *);
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/*
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* unhexchar: Convert a hexadecimal digit to the equivalent number
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*
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* Returns 0 if 'data' was converted succesfully, -1 otherwise.
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*/
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static inline int unhexchar(unsigned char *data)
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{
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unsigned char num = *data;
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if (num >= '0' && num <= '9') {
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*data = num - '0';
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return 0;
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} else {
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num |= 0x20; /* upper case -> lower case */
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if (num >= 'a' && num <= 'f') {
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*data = num - 'a' + 10;
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return 0;
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}
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}
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return -1;
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}
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#endif /* _STDIO_H */
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