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/*
* Copyright 2023 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 TOKENIZERS_H
#define TOKENIZERS_H
#include "config.h"
#include "mem_pool.h"
#include "fstring.h"
#include "rspamd.h"
#include "stat_api.h"
#include <unicode/utext.h>
#define RSPAMD_DEFAULT_TOKENIZER "osb"
#ifdef __cplusplus
extern "C" {
#endif
struct rspamd_tokenizer_runtime;
struct rspamd_stat_ctx;
/* Common tokenizer structure */
struct rspamd_stat_tokenizer {
gchar *name;
gpointer (*get_config)(rspamd_mempool_t *pool,
struct rspamd_tokenizer_config *cf, gsize *len);
gint (*tokenize_func)(struct rspamd_stat_ctx *ctx,
struct rspamd_task *task,
GArray *words,
gboolean is_utf,
const gchar *prefix,
GPtrArray *result);
};
enum rspamd_tokenize_type {
RSPAMD_TOKENIZE_UTF = 0,
RSPAMD_TOKENIZE_RAW,
RSPAMD_TOKENIZE_UNICODE
};
/* Compare two token nodes */
gint token_node_compare_func(gconstpointer a, gconstpointer b);
/* Tokenize text into array of words (rspamd_stat_token_t type) */
GArray *rspamd_tokenize_text(const gchar *text, gsize len,
const UText *utxt,
enum rspamd_tokenize_type how,
struct rspamd_config *cfg,
GList *exceptions,
guint64 *hash,
GArray *cur_words,
rspamd_mempool_t *pool);
/* OSB tokenize function */
gint rspamd_tokenizer_osb(struct rspamd_stat_ctx *ctx,
struct rspamd_task *task,
GArray *words,
gboolean is_utf,
const gchar *prefix,
GPtrArray *result);
gpointer rspamd_tokenizer_osb_get_config(rspamd_mempool_t *pool,
struct rspamd_tokenizer_config *cf,
gsize *len);
struct rspamd_lang_detector;
void rspamd_normalize_single_word(rspamd_stat_token_t *tok, rspamd_mempool_t *pool);
void rspamd_normalize_words(GArray *words, rspamd_mempool_t *pool);
void rspamd_stem_words(GArray *words, rspamd_mempool_t *pool,
const gchar *language,
struct rspamd_lang_detector *lang_detector);
void rspamd_tokenize_meta_words(struct rspamd_task *task);
#ifdef __cplusplus
}
#endif
#endif
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