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/* $OpenBSD: coll.h,v 1.2 2019/05/13 17:00:12 schwarze Exp $ */
/*-
* Copyright (C) 2009 Gabor Kovesdan <gabor@FreeBSD.org>
* Copyright (C) 2012 Oleg Moskalenko <mom040267@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if !defined(__COLL_H__)
#define __COLL_H__
#include "bwstring.h"
#include "sort.h"
/*
* Sort hint data for -n
*/
struct n_hint {
unsigned long long n1;
unsigned char si;
bool empty;
bool neg;
};
/*
* Sort hint data for -g
*/
struct g_hint {
double d;
bool nan;
bool notnum;
};
/*
* Sort hint data for -M
*/
struct M_hint {
int m;
};
/*
* Status of a sort hint object
*/
typedef enum {
HS_ERROR = -1, HS_UNINITIALIZED = 0, HS_INITIALIZED = 1
} hint_status;
/*
* Sort hint object
*/
struct key_hint {
hint_status status;
union
{
struct n_hint nh;
struct g_hint gh;
struct M_hint Mh;
} v;
};
/*
* Key value
*/
struct key_value {
struct bwstring *k; /* key string */
struct key_hint hint[0]; /* key sort hint */
};
/*
* Set of keys container object.
*/
struct keys_array {
struct key_value key[0];
};
/*
* Parsed -k option data
*/
struct key_specs {
struct sort_mods sm;
size_t c1;
size_t c2;
size_t f1;
size_t f2;
bool pos1b;
bool pos2b;
};
/*
* Single entry in sort list.
*/
struct sort_list_item {
struct bwstring *str;
struct keys_array ka;
};
/*
* Function type, used to compare two list objects
*/
typedef int (*listcoll_t)(struct sort_list_item **ss1, struct sort_list_item **ss2);
extern struct key_specs *keys;
extern size_t keys_num;
/* funcs */
cmpcoll_t get_sort_func(struct sort_mods *sm);
struct keys_array *keys_array_alloc(void);
size_t keys_array_size(void);
void set_key_on_keys_array(struct keys_array *ka, struct bwstring *s, size_t ind);
void clean_keys_array(const struct bwstring *s, struct keys_array *ka);
struct sort_list_item *sort_list_item_alloc(void);
void sort_list_item_set(struct sort_list_item *si, struct bwstring *str);
void sort_list_item_clean(struct sort_list_item *si);
size_t sort_list_item_size(struct sort_list_item *si);
int preproc(struct bwstring *s, struct keys_array *ka);
int top_level_str_coll(const struct bwstring *, const struct bwstring *);
int key_coll(struct keys_array *ks1, struct keys_array *ks2, size_t offset);
int str_list_coll(struct bwstring *str1, struct sort_list_item **ss2);
int list_coll_by_str_only(struct sort_list_item **ss1, struct sort_list_item **ss2);
int list_coll(const void *ss1, const void *ss2);
int list_coll_offset(struct sort_list_item **ss1, struct sort_list_item **ss2, size_t offset);
listcoll_t get_list_call_func(size_t offset);
#endif /* __COLL_H__ */
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