str_rtrim.c

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/* rtrim$ function */

#include "fb.h"

FBCALL FBSTRING *fb_RTRIM( FBSTRING *src )
{
        FBSTRING *dst;
        ssize_t len;

        if( src == NULL )
                return &__fb_ctx.null_desc;

        FB_STRLOCK();

        len = 0;
        if( src->data != NULL )
        {
                len = FB_STRSIZE( src );
                if( len > 0 )
                {
                        char *src_ptr = fb_hStrSkipCharRev( src->data, len, 32 );
                        len = (ssize_t)(src_ptr - src->data) + 1;
                }
        }

        if( len > 0 )
        {
                /* alloc temp string */
        dst = fb_hStrAllocTemp_NoLock( NULL, len );
                if( dst != NULL )
                {
                        /* simple copy */
                        fb_hStrCopy( dst->data, src->data, len );
                }
                else
                        dst = &__fb_ctx.null_desc;
    }
        else
                dst = &__fb_ctx.null_desc;

        /* del if temp */
        fb_hStrDelTemp_NoLock( src );

        FB_STRUNLOCK();

        return dst;
}