lwgeom_to_wkb_write_buf()

static ptrdiff_t lwgeom_to_wkb_write_buf ( const LWGEOM *  geom, uint8_t  variant, uint8_t *  buffer  )

static

Convert LWGEOM to a char* in WKB format.

Caller is responsible for freeing the returned array.

Parameters

variant.	Unsigned bitmask value. Accepts one of: WKB_ISO, WKB_EXTENDED, WKB_SFSQL. Accepts any of: WKB_NDR, WKB_HEX. For example: Variant = ( WKB_ISO | WKB_NDR ) would return the little-endian ISO form of WKB. For Example: Variant = ( WKB_EXTENDED | WKB_HEX ) would return the big-endian extended form of WKB, as hex-encoded ASCII (the "canonical form").
size_out	If supplied, will return the size of the returned memory segment, including the null terminator in the case of ASCII.

Definition at line 797 of file lwout_wkb.c.

{
        /* If neither or both variants are specified, choose the native order */
        if (!(variant & WKB_NDR || variant & WKB_XDR) || (variant & WKB_NDR && variant & WKB_XDR))
        {
                if (IS_BIG_ENDIAN)
                        variant = variant | WKB_XDR;
                else
                        variant = variant | WKB_NDR;
        }
 
        /* Write the WKB into the output buffer */
        int written_bytes = (lwgeom_to_wkb_buf(geom, buffer, variant) - buffer);
 
        return written_bytes;
}

References buffer(), IS_BIG_ENDIAN, lwgeom_to_wkb_buf(), variant, WKB_NDR, and WKB_XDR.

Referenced by lwgeom_to_wkb_buffer(), and lwgeom_to_wkb_varlena().

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