strw_left.c

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/* leftw$ function */

#include "fb.h"

FBCALL FB_WCHAR *fb_WstrLeft( const FB_WCHAR *src, ssize_t chars )
{
        FB_WCHAR *dst;
        ssize_t len;

        if( src == NULL )
                return NULL;

        len = fb_wstr_Len( src );
        if( (chars <= 0) || (len == 0) )
                return NULL;

        if( chars < len )
                len = chars;

        /* alloc temp string */
    dst = fb_wstr_AllocTemp( len );
        if( dst != NULL )
                fb_wstr_Copy( dst, src, len );

        return dst;
}