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/* 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);
}
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