text_cmds/sort/coll.h

   1 /*      $FreeBSD$       */
   2
   3 /*-
   4  * Copyright (C) 2009 Gabor Kovesdan <gabor@FreeBSD.org>
   5  * Copyright (C) 2012 Oleg Moskalenko <mom040267@gmail.com>
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #if !defined(__COLL_H__)
  31 #define __COLL_H__
  32
  33 #include "bwstring.h"
  34 #include "sort.h"
  35
  36 /*
  37  * Sort hint data for -n
  38  */
  39 struct n_hint
  40 {
  41         unsigned long long       n1;
  42         unsigned char            si;
  43         bool                     empty;
  44         bool                     neg;
  45 };
  46
  47 /*
  48  * Sort hint data for -g
  49  */
  50 struct g_hint
  51 {
  52         double                   d;
  53         bool                     nan;
  54         bool                     notnum;
  55 };
  56
  57 /*
  58  * Sort hint data for -M
  59  */
  60 struct M_hint
  61 {
  62         int                      m;
  63 };
  64
  65 /*
  66  * Status of a sort hint object
  67  */
  68 typedef enum
  69 {
  70         HS_ERROR = -1, HS_UNINITIALIZED = 0, HS_INITIALIZED = 1
  71 } hint_status;
  72
  73 /*
  74  * Sort hint object
  75  */
  76 struct key_hint
  77 {
  78         hint_status             status;
  79         union
  80         {
  81                 struct n_hint           nh;
  82                 struct g_hint           gh;
  83                 struct M_hint           Mh;
  84         }                       v;
  85 };
  86
  87 /*
  88  * Key value
  89  */
  90 struct key_value
  91 {
  92         struct bwstring         *k; /* key string */
  93         struct key_hint          hint[0]; /* key sort hint */
  94 };
  95
  96 /*
  97  * Set of keys container object.
  98  */
  99 struct keys_array
 100 {
 101         struct key_value         key[0];
 102 };
 103
 104 /*
 105  * Parsed -k option data
 106  */
 107 struct key_specs
 108 {
 109         struct sort_mods         sm;
 110         size_t                   c1;
 111         size_t                   c2;
 112         size_t                   f1;
 113         size_t                   f2;
 114         bool                     pos1b;
 115         bool                     pos2b;
 116 };
 117
 118 /*
 119  * Single entry in sort list.
 120  */
 121 struct sort_list_item
 122 {
 123         struct bwstring         *str;
 124         struct keys_array        ka;
 125 };
 126
 127 /*
 128  * Function type, used to compare two list objects
 129  */
 130 typedef int (*listcoll_t)(struct sort_list_item **ss1, struct sort_list_item **ss2);
 131
 132 extern struct key_specs *keys;
 133 extern size_t keys_num;
 134
 135 /*
 136  * Main localised symbols. These must be wint_t as they may hold WEOF.
 137  */
 138 extern wint_t symbol_decimal_point;
 139 extern wint_t symbol_thousands_sep;
 140 extern wint_t symbol_negative_sign;
 141 extern wint_t symbol_positive_sign;
 142
 143 /* funcs */
 144
 145 cmpcoll_t get_sort_func(struct sort_mods *sm);
 146
 147 struct keys_array *keys_array_alloc(void);
 148 size_t keys_array_size(void);
 149 struct key_value *get_key_from_keys_array(struct keys_array *ka, size_t ind);
 150 void set_key_on_keys_array(struct keys_array *ka, struct bwstring *s, size_t ind);
 151 void clean_keys_array(const struct bwstring *s, struct keys_array *ka);
 152
 153 struct sort_list_item *sort_list_item_alloc(void);
 154 void sort_list_item_set(struct sort_list_item *si, struct bwstring *str);
 155 void sort_list_item_clean(struct sort_list_item *si);
 156 size_t sort_list_item_size(struct sort_list_item *si);
 157
 158 int preproc(struct bwstring *s, struct keys_array *ka);
 159 int top_level_str_coll(const struct bwstring *, const struct bwstring *);
 160 int key_coll(struct keys_array *ks1, struct keys_array *ks2, size_t offset);
 161 int str_list_coll(struct bwstring *str1, struct sort_list_item **ss2);
 162 int list_coll_by_str_only(struct sort_list_item **ss1, struct sort_list_item **ss2);
 163 int list_coll(struct sort_list_item **ss1, struct sort_list_item **ss2);
 164 int list_coll_offset(struct sort_list_item **ss1, struct sort_list_item **ss2, size_t offset);
 165
 166 listcoll_t get_list_call_func(size_t offset);
 167
 168 #endif /* __COLL_H__ */