1 files changed, 121 insertions, 0 deletions
diff --git a/src/libknot/yparser/ypformat.c b/src/libknot/yparser/ypformat.c
new file mode 100644
index 0000000..3284924
--- /dev/null
+++ b/src/libknot/yparser/ypformat.c
@@ -0,0 +1,121 @@
+/*  Copyright (C) 2017 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+#include "libknot/yparser/yptrafo.h"
+#include "libknot/attribute.h"
+#include "libknot/errcode.h"
+
+static int format_item(
+	const yp_item_t *item,
+	const uint8_t *data,
+	size_t data_len,
+	char *out,
+	size_t out_len,
+	yp_style_t style,
+	const char *prefix,
+	bool first_value,
+	bool last_value)
+{
+	if (item == NULL || out == NULL || prefix == NULL) {
+		return KNOT_EINVAL;
+	}
+
+	// Format key part.
+	int ret = snprintf(out, out_len, "%s%s%s%s",
+	                   first_value ? prefix : "",
+	                   first_value ? item->name + 1 : "",
+	                   first_value ? ":" : "",
+	                   item->type == YP_TGRP ?
+	                     "\n" : (first_value && !last_value ? " [ " : " "));
+	if (ret < 0 || ret >= out_len) {
+		return KNOT_ESPACE;
+	}
+	out     += ret;
+	out_len -= ret;
+
+	// Finish if group.
+	if (item->type == YP_TGRP) {
+		return KNOT_EOK;
+	}
+
+	// Format data part.
+	size_t aux_len = out_len;
+	ret = yp_item_to_txt(item, data, data_len, out, &aux_len, style);
+	if (ret != KNOT_EOK) {
+		return ret;
+	}
+	out     += aux_len;
+	out_len -= aux_len;
+
+	// Format data end.
+	ret = snprintf(out, out_len, "%s%s",
+	               last_value && !first_value ? " ]" : "",
+	               last_value ? "\n" : ",");
+	if (ret < 0 || ret >= out_len) {
+		return KNOT_ESPACE;
+	}
+
+	return KNOT_EOK;
+}
+
+_public_
+int yp_format_key0(
+	const yp_item_t *item,
+	const uint8_t *data,
+	size_t data_len,
+	char *out,
+	size_t out_len,
+	yp_style_t style,
+	bool first_value,
+	bool last_value)
+{
+	return format_item(item, data, data_len, out, out_len, style, "",
+	                   first_value, last_value);
+}
+
+_public_
+int yp_format_id(
+	const yp_item_t *item,
+	const uint8_t *data,
+	size_t data_len,
+	char *out,
+	size_t out_len,
+	yp_style_t style)
+{
+	if (data == NULL) {
+		return KNOT_EINVAL;
+	}
+
+	return format_item(item, data, data_len, out, out_len, style, "  - ",
+	                   true, true);
+}
+
+_public_
+int yp_format_key1(
+	const yp_item_t *item,
+	const uint8_t *data,
+	size_t data_len,
+	char *out,
+	size_t out_len,
+	yp_style_t style,
+	bool first_value,
+	bool last_value)
+{
+	return format_item(item, data, data_len, out, out_len, style, "    ",
+	                   first_value, last_value);
+}