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diff --git a/src/lua/lua_parsers.h b/src/lua/lua_parsers.h
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+/*-
+ * Copyright 2020 Vsevolod Stakhov
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RSPAMD_LUA_PARSERS_H
+#define RSPAMD_LUA_PARSERS_H
+
+#include "lua_common.h"
+
+/***
+ * @function parsers.tokenize_text(input[, exceptions])
+ * Create tokens from a text using optional exceptions list
+ * @param {text/string} input input data
+ * @param {table} exceptions, a table of pairs containing <start_pos,length> of exceptions in the input
+ * @return {table/strings} list of strings representing words in the text
+ */
+LUA_PUBLIC_FUNCTION_DEF(parsers, tokenize_text);
+
+/***
+ * @function parsers.parse_html(input)
+ * Parses HTML and returns the according text
+ * @param {string|text} in input HTML
+ * @return {rspamd_text} processed text with no HTML tags
+ */
+LUA_PUBLIC_FUNCTION_DEF(parsers, parse_html);
+
+/***
+ * @function parsers.parse_mail_address(str, [pool])
+ * Parses email address and returns a table of tables in the following format:
+ *
+ * - `raw` - the original value without any processing
+ * - `name` - name of internet address in UTF8, e.g. for `Vsevolod Stakhov <blah@foo.com>` it returns `Vsevolod Stakhov`
+ * - `addr` - address part of the address
+ * - `user` - user part (if present) of the address, e.g. `blah`
+ * - `domain` - domain part (if present), e.g. `foo.com`
+ * - `flags` - table with following keys set to true if given condition fulfilled:
+ *   - [valid] - valid SMTP address in conformity with https://tools.ietf.org/html/rfc5321#section-4.1.
+ *   - [ip] - domain is IPv4/IPv6 address
+ *   - [braced] - angled `<blah@foo.com>` address
+ *   - [quoted] - quoted user part
+ *   - [empty] - empty address
+ *   - [backslash] - user part contains backslash
+ *   - [8bit] - contains 8bit characters
+ *
+ * @param {string} str input string
+ * @param {rspamd_mempool} pool memory pool to use
+ * @return {table/tables} parsed list of mail addresses
+ */
+LUA_PUBLIC_FUNCTION_DEF(parsers, parse_mail_address);
+
+/***
+ *  @function parsers.parse_content_type(ct_string, mempool)
+ * Parses content-type string to a table:
+ * - `type`
+ * - `subtype`
+ * - `charset`
+ * - `boundary`
+ * - other attributes
+ *
+ * @param {string} ct_string content type as string
+ * @param {rspamd_mempool} mempool needed to store temporary data (e.g. task pool)
+ * @return table or nil if cannot parse content type
+ */
+LUA_PUBLIC_FUNCTION_DEF(parsers, parse_content_type);
+
+/***
+ * @function parsers.parse_smtp_date(str[, local_tz])
+ * Converts an SMTP date string to unix timestamp
+ * @param {string} str input string
+ * @param {boolean} local_tz convert to local tz if `true`
+ * @return {number} time as unix timestamp (converted to float)
+ */
+LUA_PUBLIC_FUNCTION_DEF(parsers, parse_smtp_date);
+
+
+#endif//RSPAMD_LUA_PARSERS_H