[9fans] fseek

[9fans] fseek

[David Presotto]

It's been pointed out to me that the following functions in
ape/stdio.h are defined differently than POSIX:

extern int fseek(FILE *, long long, int);
extern long long ftell(FILE *);
extern int snprintf(char *, int, const char *, ...);
extern int vsnprintf(char *, int, const char *, va_list);

They should have been:

extern int fseek(FILE *, long, int);
extern long ftell(FILE *);
extern int snprintf(char *, size_t, const char *, ...);
extern int vsnprintf(char *, size_t, const char *, va_list);

I'm going to change them to the standard definitions.
To handle 64 bit offsets, the following are now defined:

extern int fseeko(FILE *, off_t, int);
extern off_t ftello(FILE *);

Re: [9fans] fseek

[Douglas A. Gwyn]

David Presotto wrote:
> To handle 64 bit offsets, the following are now defined:
> extern int fseeko(FILE *, off_t, int);
> extern off_t ftello(FILE *);

Hopefully you also have the standard fgetpos, fsetpos.
You're free to typedef fpos_t as long long.

I don't argue against fseeko since it might be more
convenient than making separate fgetpos and fsetpos
calls for relative positioning.  It's not obvious to
me that ftello is needed.