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Diffstat (limited to 'src/libknot/yparser/ypformat.c')
-rw-r--r-- | src/libknot/yparser/ypformat.c | 121 |
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); +} |