Subversion Repositories HelenOS

/** Read character from a stream. */

int fgetc(FILE *f)

{

    unsigned char c;

    size_t n;

    n = fread(&c, sizeof(c), 1, f);

    if (n < 1) return EOF;

    return (int) c;

}

/** Write character to a stream. */

int fputc(int c, FILE *f)

{

    unsigned char cc;

    size_t n;

    cc = (unsigned char) c;

    n = fwrite(&cc, sizeof(cc), 1, f);

    if (n < 1) return EOF;

    return (int) cc;

}

/** Write string to a stream. */

int fputs(const char *s, FILE *f)

{

    int rc;

    rc = 0;

    while (*s && rc >= 0) {

        rc = fputc(*s++, f);

    }

    if (rc < 0) return EOF;

    return 0;

}

/** Seek to position in stream. */

int fseek(FILE *f, long offset, int origin)

{

    off_t rc;

    rc = lseek(f->fd, offset, origin);

    if (rc == (off_t) (-1)) {

        /* errno has been set by lseek. */

        return -1;

    }

    f->eof = 0;

    return 0;

}