contrib/groff-1.19/src/include/search.h

   1 // -*- C++ -*-
   2 /* Copyright (C) 1989, 1990, 1991, 1992, 2004 Free Software Foundation, Inc.
   3      Written by James Clark (jjc@jclark.com)
   4
   5 This file is part of groff.
   6
   7 groff is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with groff; see the file COPYING.  If not, write to the Free Software
  19 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  20
  21 class search_item;
  22 class search_item_iterator;
  23
  24 class search_list {
  25 public:
  26   search_list();
  27   ~search_list();
  28   void add_file(const char *fn, int silent = 0);
  29   int nfiles() const;
  30 private:
  31   search_item *list;
  32   int niterators;
  33   int next_fid;
  34   friend class search_list_iterator;
  35 };
  36
  37 class bmpattern;
  38
  39 class linear_searcher {
  40   const char *ignore_fields;
  41   int truncate_len;
  42   bmpattern **keys;
  43   int nkeys;
  44   const char *search_and_check(const bmpattern *key, const char *buf,
  45                                const char *bufend, const char **start = 0)
  46     const;
  47   int check_match(const char *buf, const char *bufend, const char *match,
  48                   int matchlen, const char **cont, const char **start)
  49     const;
  50 public:
  51   linear_searcher(const char *query, int query_len,
  52                   const char *ign, int trunc);
  53   ~linear_searcher();
  54   int search(const char *buf, const char *bufend,
  55              const char **startp, int *lengthp) const;
  56 };
  57
  58 class search_list_iterator {
  59   search_list *list;
  60   search_item *ptr;
  61   search_item_iterator *iter;
  62   char *query;
  63   linear_searcher searcher;
  64 public:
  65   search_list_iterator(search_list *, const char *query);
  66   ~search_list_iterator();
  67   int next(const char **, int *, reference_id * = 0);
  68 };
  69
  70 class search_item {
  71 protected:
  72   char *name;
  73   int filename_id;
  74 public:
  75   search_item *next;
  76   search_item(const char *nm, int fid);
  77   virtual search_item_iterator *make_search_item_iterator(const char *) = 0;
  78   virtual ~search_item();
  79   int is_named(const char *) const;
  80   virtual int next_filename_id() const;
  81 };
  82
  83 class search_item_iterator {
  84   char shut_g_plus_plus_up;
  85 public:
  86   virtual ~search_item_iterator();
  87   virtual int next(const linear_searcher &, const char **ptr, int *lenp,
  88                    reference_id *) = 0;
  89 };
  90
  91 search_item *make_index_search_item(const char *filename, int fid);
  92 search_item *make_linear_search_item(int fd, const char *filename, int fid);
  93
  94 extern int linear_truncate_len;
  95 extern const char *linear_ignore_fields;
  96 extern int verify_flag;