gnu/dist/groff/src/include/search.h

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