stdio.h File Reference

#include <sys/types.h>
#include <sys/cdefs.h>

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Data Structures
struct	FILE

Macros
#define	SEEK_SET   0
#define	SEEK_CUR   1
#define	SEEK_END   2
#define	EOF   (-1)
#define	FOPEN_MAX   16
#define	getc(_fh)   fgetc(_fh)

Typedefs
typedef struct FILE	FILE

Functions
FILE *	fopen (const char *path, const char *mode)
int	fclose (FILE *fh)
int	feof (FILE *fh)
int	fflush (FILE *fh)
size_t	fread (void *buf, size_t size, size_t nmemb, FILE *fh)
size_t	fwrite (const void *buf, size_t size, size_t nmemb, FILE *fh)
int	fputc (int ch, FILE *fh)
int	fputs (const char *str, FILE *fh)
int	fgetc (FILE *fh)
char *	fgets (char *str, int size, FILE *fh)
int	puts (const char *str)
int	printf (const char *fmt,...)
int	fprintf (FILE *stream, const char *fmt,...)
int	sprintf (char *str, const char *fmt,...)
int	snprintf (char *str, size_t size, const char *fmt,...) __printflike(3

Variables
FILE *	stdin
FILE *	stdout
FILE *	stderr

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Data Structure Documentation

FILE

struct FILE

Definition at line 8 of file stdio.h.

Collaboration diagram for FILE:

Data Fields
uint64_t	fd
int	in_use
fpos_t	offset

Macro Definition Documentation

EOF

#define EOF   (-1)

Definition at line 18 of file stdio.h.

FOPEN_MAX

#define FOPEN_MAX   16

Definition at line 24 of file stdio.h.

getc

#define getc

(

_fh

)

fgetc(_fh)

Definition at line 39 of file stdio.h.

SEEK_CUR

#define SEEK_CUR   1

Definition at line 15 of file stdio.h.

SEEK_END

#define SEEK_END   2

Definition at line 16 of file stdio.h.

SEEK_SET

#define SEEK_SET   0

Definition at line 14 of file stdio.h.

Typedef Documentation

FILE

typedef struct FILE FILE

Function Documentation

fclose()

int fclose

(

FILE *

fh

)

Definition at line 86 of file file.c.

{
    int status = OSClose(fh->fd);
 
    _free_file(fh);
 
    return status;
}

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feof()

int feof

(

FILE *

fh

)

Definition at line 96 of file file.c.

{
    errno = ENOSYS;
    return -1;
}

fflush()

int fflush

(

FILE *

fh

)

Definition at line 103 of file file.c.

{
    errno = ENOSYS;
    return -1;
}

fgetc()

int fgetc

(

FILE *

fh

)

Definition at line 157 of file file.c.

{
    char ch;
    if (fread(&ch, 1, 1, fh) == 1)
        return ch;
    return EOF;
}

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fgets()

char * fgets	(	char *	str,
		int	size,
		FILE *	fh
	)

Definition at line 166 of file file.c.

{
    int i;
 
    for (i = 0; i < (size - 1); i++) {
        int ch = fgetc(fh);
        if (ch == EOF)
            return NULL;
        if (ch == '\b') {
            if (i > 0)
                i -= 1;
            i -= 1;
            continue;
        }
        str[i] = (char)ch;
        if (ch == '\n') {
            str[i + 1] = '\0';
            return str;
        }
    }
 
    str[size - 1] = '\0';
    return str;
}

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fopen()

FILE * fopen	(	const char *	path,
		const char *	mode
	)

Definition at line 66 of file file.c.

{
    uint64_t fd;
    FILE *fh;
    // XXX: handle mode
 
    fd = OSOpen(path, 0);
    if (fd == 0)
        return NULL;
 
    fh = _alloc_file();
    fh->fd = fd;
    fh->offset = 0;
 
    // XXX: handle append
 
    return fh;
}

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fprintf()

int fprintf	(	FILE *	stream,
		const char *	fmt,
			...
	)

Definition at line 224 of file printf.c.

{
    int ret;
    va_list ap;
 
    va_start(ap, fmt);
    ret = kvprintf(fmt, fileputc, stream, ap);
    va_end(ap);
 
    return ret;
}

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fputc()

int fputc	(	int	ch,
		FILE *	fh
	)

Definition at line 124 of file file.c.

{
    if (fwrite(&ch, 1, 1, fh) == 1)
        return ch;
    return EOF;
}

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fputs()

int fputs	(	const char *	str,
		FILE *	fh
	)

Definition at line 132 of file file.c.

{
    int status = fwrite(str, strlen(str), 1, fh);
    if (status > 0)
        return status;
    // XXX: error handling
    return EOF;
}

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fread()

size_t fread	(	void *	buf,
		size_t	size,
		size_t	nmemb,
		FILE *	fh
	)

Definition at line 110 of file file.c.

{
    return OSRead(fh->fd, buf, 0, size * nmemb);
    // set errno
}

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fwrite()

size_t fwrite	(	const void *	buf,
		size_t	size,
		size_t	nmemb,
		FILE *	fh
	)

Definition at line 117 of file file.c.

{
    return OSWrite(fh->fd, buf, 0, size * nmemb);
    // set errno
}

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printf()

int printf	(	const char *	fmt,
			...
	)

Definition at line 212 of file printf.c.

{
    int ret;
    va_list ap;
 
    va_start(ap, fmt);
    ret = kvprintf(fmt, fileputc, (void *)stdout, ap);
    va_end(ap);
 
    return ret;
}

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puts()

int puts

(

const char *

str

)

Definition at line 142 of file file.c.

{
    int status, status2;
    status = fputs(str, stdout);
    if (status < 0)
        return EOF;
 
    status2 = fputc('\n', stdout);
    if (status2 < 0)
        return EOF;
 
    return status;
}

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snprintf()

int snprintf	(	char *	str,
		size_t	size,
		const char *	fmt,
			...
	)

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sprintf()

int sprintf	(	char *	str,
		const char *	fmt,
			...
	)

Definition at line 256 of file printf.c.

{
    int ret;
    va_list ap;
    StrState state;
 
    state.buf = str;
    state.cur = str;
    state.maxlen = -1;
 
    va_start(ap, fmt);
    ret = kvprintf(fmt, strputc, &state, ap);
    va_end(ap);
 
    state.cur[0] = '\0';
 
    return ret;
}

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Variable Documentation

stderr

FILE* stderr

extern

Definition at line 17 of file file.c.

stdin

FILE* stdin

extern

Definition at line 15 of file file.c.

stdout

FILE* stdout

extern

Definition at line 16 of file file.c.