Re: proposal: scm_string2str() and scm_symbol2str()

[Dirk Herrmann]

On Fri, 16 Nov 2001, stefan wrote:

> If noone objects I would like to put the following piece into the
> "Decisions" section:
> 
>  * To have sane memory allocation interface between C and libguile
>    put scm_c_free(), scm_c_malloc() and scm_c_realloc() into `gc.[ch]'.

What would these functions do?

>  * Convert and implement these gh_*() functionality:
>    gh_scm2newstr() -> 
>    char *scm_c_string2str (SCM obj, char *str, size_t *lenp)

I suggest to name this function scm_c_string2mem.  The reason is, that it
may hold \0 characters.  And, for those conversions that work the other
way around we have chosen to use 'mem' for char*/size_t pairs, and str for
zero terminated character arrays.

>    gh_scm2newsymbol() -> 
>    char *scm_c_symbol2str (SCM obj, char *str, size_t *lenp)

Same as above:  scm_c_symbol2mem

>    gh_get_substr() -> 
>    char *scm_c_string2substr (SCM obj, char *str, size_t start, size_t len)

Hmmm.  This should rather be named scm_c_substring2mem, shouldn't it?

>    gh_scm2chars() -> 
>    char *scm_c_scm2chars (SCM obj, char *dst) 
>    gh_scm2shorts() -> 
>    short *scm_2_scm2shorts (SCM obj, short *dst)
>    gh_scm2longs() -> 
>    long *scm_c_scm2longs (SCM obj, long *dst)
>    gh_scm2floats() -> 
>    float *scm_c_scm2floats (SCM obj, float *dst)
>    gh_scm2doubles() -> 
>    double *scm_c_scm2doubles (SCM obj, double *dst)

I don't know about these.

Best regards
Dirk Herrmann