int yaz_marc_write_json(yaz_marc_t mt, WRBUF w)
{
int identifier_length;
struct yaz_marc_node *n;
const char *leader = 0;
int first = 1;
wrbuf_puts(w, "{\n");
for (n = mt->nodes; n; n = n->next)
if (n->which == YAZ_MARC_LEADER)
leader = n->u.leader;
if (!leader)
return -1;
if (!atoi_n_check(leader+11, 1, &identifier_length))
return -1;
wrbuf_puts(w, "\t\"leader\":\"");
wrbuf_json_puts(w, leader);
wrbuf_puts(w, "\",\n");
wrbuf_puts(w, "\t\"fields\":\n\t[\n");
for (n = mt->nodes; n; n = n->next)
{
struct yaz_marc_subfield *s;
const char *sep = "";
switch (n->which)
{
case YAZ_MARC_LEADER:
case YAZ_MARC_COMMENT:
break;
case YAZ_MARC_CONTROLFIELD:
if (first)
first = 0;
else
wrbuf_puts(w, ",\n");
wrbuf_puts(w, "\t\t{\n\t\t\t\"");
wrbuf_iconv_json_puts(w, mt->iconv_cd, n->u.controlfield.tag);
wrbuf_puts(w, "\":\"");
wrbuf_iconv_json_puts(w, mt->iconv_cd, n->u.controlfield.data);
wrbuf_puts(w, "\"\n\t\t}");
break;
case YAZ_MARC_DATAFIELD:
if (first)
first = 0;
else
wrbuf_puts(w, ",\n");
wrbuf_puts(w, "\t\t{\n\t\t\t\"");
wrbuf_json_puts(w, n->u.datafield.tag);
wrbuf_puts(w, "\":\n\t\t\t{\n\t\t\t\t\"subfields\":\n\t\t\t\t[\n");
for (s = n->u.datafield.subfields; s; s = s->next)
{
size_t using_code_len = get_subfield_len(mt, s->code_data,
identifier_length);
wrbuf_puts(w, sep);
sep = ",\n";
wrbuf_puts(w, "\t\t\t\t\t{\n\t\t\t\t\t\t\"");
wrbuf_iconv_json_write(w, mt->iconv_cd,
s->code_data, using_code_len);
wrbuf_puts(w, "\":\"");
wrbuf_iconv_json_puts(w, mt->iconv_cd,
s->code_data + using_code_len);
wrbuf_puts(w, "\"\n\t\t\t\t\t}");
}
wrbuf_puts(w, "\n\t\t\t\t]");
if (n->u.datafield.indicator[0])
{
int i;
for (i = 0; n->u.datafield.indicator[i]; i++)
{
wrbuf_printf(w, ",\n\t\t\t\t\"ind%d\":\"%c\"", i + 1,
n->u.datafield.indicator[i]);
}
}
wrbuf_puts(w, "\n\t\t\t}\n");
wrbuf_puts(w, "\n\t\t}");
break;
}
}
wrbuf_puts(w, "\n\t]\n");
wrbuf_puts(w, "}\n");
return 0;
}
static void json_write_wrbuf_r(struct json_node *node, WRBUF result, int indent)
{
int sub_indent = -1;
if (indent >= 0)
sub_indent = indent + 1;
switch (node->type)
{
case json_node_object:
json_indent(result, indent);
wrbuf_puts(result, "{");
if (indent >= 0)
{
wrbuf_puts(result, "\n");
json_indent(result, sub_indent);
}
if (node->u.link[0])
json_write_wrbuf_r(node->u.link[0], result, sub_indent);
if (indent >= 0)
{
wrbuf_puts(result, "\n");
json_indent(result, indent);
}
wrbuf_puts(result, "}");
break;
case json_node_array:
json_indent(result, indent);
wrbuf_puts(result, "[");
if (indent >= 0)
{
wrbuf_puts(result, "\n");
json_indent(result, sub_indent);
}
if (node->u.link[0])
{
json_write_wrbuf_r(node->u.link[0], result, sub_indent);
}
if (indent >= 0)
{
wrbuf_puts(result, "\n");
json_indent(result, indent);
}
wrbuf_puts(result, "]");
break;
case json_node_list:
json_write_wrbuf_r(node->u.link[0], result, indent);
if (node->u.link[1])
{
wrbuf_puts(result, ",");
if (indent >= 0)
wrbuf_puts(result, " ");
json_write_wrbuf_r(node->u.link[1], result, indent);
}
break;
case json_node_pair:
json_write_wrbuf_r(node->u.link[0], result, indent);
wrbuf_puts(result, ":");
if (indent >= 0)
wrbuf_puts(result, " ");
json_write_wrbuf_r(node->u.link[1], result, indent);
break;
case json_node_string:
wrbuf_puts(result, "\"");
wrbuf_json_puts(result, node->u.string);
wrbuf_puts(result, "\"");
break;
case json_node_number:
wrbuf_printf(result, "%lg", node->u.number);
break;
case json_node_true:
wrbuf_puts(result, "true");
break;
case json_node_false:
wrbuf_puts(result, "false");
break;
case json_node_null:
wrbuf_puts(result, "null");
break;
}
}
