On 23.04.23 07:31, Pavel Stehule wrote:
> Hi
>
> maybe I found a bug in xmlserialize
>
> SELECT xmlserialize(DOCUMENT '<foo><bar><val
> x="y">42</val></bar></foo>' AS varchar INDENT);
>
> (2023-04-23 07:27:53) postgres=# SELECT xmlserialize(DOCUMENT
> '<foo><bar><val x="y">42</val></bar></foo>' AS varchar INDENT);
> ┌─────────────────────────┐
> │ xmlserialize │
> ╞═════════════════════════╡
> │ <foo> ↵│
> │ <bar> ↵│
> │ <val x="y">42</val>↵│
> │ </bar> ↵│
> │ </foo> ↵│
> │ │
> └─────────────────────────┘
> (1 row)
>
> Looks so there is an extra empty row.
>
> Regards
>
> Pavel
Hi Pavel,
Good catch! It looks like it comes directly from libxml2.
xmlDocPtr doc = xmlReadDoc(BAD_CAST "<foo><bar><val
x=\"y\">42</val></bar></foo>", NULL, NULL, 0 );
xmlBufferPtr buf = NULL;
xmlSaveCtxtPtr ctxt = NULL;
buf = xmlBufferCreate();
ctxt = xmlSaveToBuffer(buf, NULL, XML_SAVE_NO_DECL | XML_SAVE_FORMAT);
xmlSaveDoc(ctxt, doc);
xmlSaveClose(ctxt);
printf("'%s'",buf->content);
==>
'<foo>
<bar>
<val x="y">42</val>
</bar>
</foo>
'
I'll do some digging to see if there is a good way to get rid of this
newline or if we need to chose a different dump function.
Thanks!
Best, Jim
