SVGHMI: add static file serving feature.
Added two buttons to add and remove files.
Files are stored in project inside a directory named "static",
itself located in svghmi CTN instance files. Exemple :
exemples/svghmi_csv_json_img_table/svghmi_0@svghmi/static/
Files are transfered as "extra_files", but with a prefix
added to their name to avoid conflics.
#define __Unpack_case_t(TYPENAME) \
case TYPENAME##_ENUM : \
if(flags) *flags = ((__IEC_##TYPENAME##_t *)varp)->flags; \
if(value_p) *value_p = &((__IEC_##TYPENAME##_t *)varp)->value; \
if(size) *size = sizeof(TYPENAME); \
break;
#define __Unpack_case_p(TYPENAME) \
case TYPENAME##_O_ENUM : \
case TYPENAME##_P_ENUM : \
if(flags) *flags = ((__IEC_##TYPENAME##_p *)varp)->flags; \
if(value_p) *value_p = ((__IEC_##TYPENAME##_p *)varp)->value; \
if(size) *size = sizeof(TYPENAME); \
break;
#define __Is_a_string(dsc) (dsc->type == STRING_ENUM) ||\
(dsc->type == STRING_P_ENUM) ||\
(dsc->type == STRING_O_ENUM)
static int UnpackVar(__Unpack_desc_type *dsc, void **value_p, char *flags, size_t *size)
{
void *varp = dsc->ptr;
/* find data to copy*/
switch(dsc->type){
__ANY(__Unpack_case_t)
__ANY(__Unpack_case_p)
default:
return 0; /* should never happen */
}
return 1;
}