summaryrefslogtreecommitdiffstats
path: root/lib/sisu/v5/db_sqltxt.rb
blob: a07ee018a741533ac3e89e0dcde146f2350cce82 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
# encoding: utf-8
=begin

 * Name: SiSU

 * Description: a framework for document structuring, publishing and search

 * Author: Ralph Amissah

 * Copyright: (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Ralph Amissah,
   All Rights Reserved.

 * License: GPL 3 or later:

   SiSU, a framework for document structuring, publishing and search

   Copyright (C) Ralph Amissah

   This program is free software: you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the Free
   Software Foundation, either version 3 of the License, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
   more details.

   You should have received a copy of the GNU General Public License along with
   this program. If not, see <http://www.gnu.org/licenses/>.

   If you have Internet connection, the latest version of the GPL should be
   available at these locations:
   <http://www.fsf.org/licensing/licenses/gpl.html>
   <http://www.gnu.org/licenses/gpl.html>

   <http://www.sisudoc.org/sisu/en/manifest/gpl.fsf.html>

 * SiSU uses:
   * Standard SiSU markup syntax,
   * Standard SiSU meta-markup syntax, and the
   * Standard SiSU object citation numbering and system

 * Hompages:
   <http://www.jus.uio.no/sisu>
   <http://www.sisudoc.org>

 * Download:
   <http://www.sisudoc.org/sisu/en/SiSU/download.html>

 * Git
   <http://sources.sisudoc.org/gitweb/?p=code/sisu.git;a=summary>
   <http://sources.sisudoc.org/?p=code/sisu.git;a=blob;f=lib/sisu/v5/db_sqltxt.rb;hb=HEAD>

 * Ralph Amissah
   <ralph@amissah.com>
   <ralph.amissah@gmail.com>

 ** Description: system environment, resource control and configuration details

=end
module SiSU_DbText
  class Prepare
    def special_character_escape(str)
      str=str.gsub(/'/,"''"). #string.gsub!(/'/,"\047") #string.gsub!(/'/,"\\'")
        gsub(/(\\)/m,'\1\1'). #ok but with warnings, double backslash on sqlite #str.gsub!(/[\\]/m,'\\x5C') #ok but with warnings, but not for sqlite #str.gsub!(/(\\)/m,'\1') #ok for sqlite not for pgsql
        gsub(/#{Mx[:br_line]}|#{Mx[:br_nl]}/,"<br />\n").
        gsub(/#{Mx[:tag_o]}\S+?#{Mx[:tag_c]}/,''). #check
        gsub(/#{Mx[:lnk_o]}\s*(\S+?\.(?:png|jpg))(?:\s+\d+x\d+)?(.+?)#{Mx[:lnk_c]}\S+/,'[image: \1] \2').
        gsub(/#{Mx[:lnk_o]}\s*(.+?)\s*#{Mx[:lnk_c]}(?:file|ftp):\/\/\S+?([.,!?]?(?:\s|$))/,'\1\2').
        gsub(/#{Mx[:lnk_o]}\s*(.+?)\s*#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/,'\1')
    end
    def clean_searchable_text(arr) #produce clean, searchable, plaintext from document source
      txt_arr,en=[],[]
      arr=(arr.is_a?(String)) ? arr.split(/\n+/m) : arr
      arr.each do |s|
        s=s.gsub(/([*\/_-])\{(.+?)\}\1/m,'\2').
          gsub(/^(?:block|group|poem|code)\{/m,'').gsub(/^\}(?:block|group|poem|code)/m,'').
          gsub(/\A(?:@\S+:\s+.+)\Z/m,'')
        if s =~/^:A~/
          if defined? @md.creator \
          and defined? @md.creator.author \
          and not @md.creator.author.empty?
            s=s.gsub(/@author/,@md.creator.author)
          else
            SiSU_Screen::Ansi.new(
              'v',
              'WARNING Document Author information missing; provide @creator: :author:',
              @md.fnb
            ).warn unless @md.opt.act[:quiet][:set]==:on
          end
          if defined? @md.title \
          and defined? @md.title.full \
          and not @md.title.full.empty?
            s=s.gsub(/@title/,@md.title.full)
          else
            SiSU_Screen::Ansi.new(
              'v',
              'WARNING Document Title missing; provide @title:',
              @md.fnb
            ).warn unless @md.opt.act[:quiet][:set]==:on
          end
        end
        s=s.gsub(/^(?:_[1-9]\*?|_\*)\s+/m,'').
          gsub(/^(?:[1-9]\~(\S+)?)\s+/m,'').
          gsub(/^(?::?[A-C]\~(\S+)?)\s+/m,'').
          gsub(/^%{1,3} .+/m,''). #removed even if contained in code block
          gsub(/<br>/m,' ')
        en << s.scan(/~\{\s*(.+?)\s*\}~/m)
        s=s.gsub(/~\{.+?\}~/m,'').
          gsub(/ \s+/m,' ')
        #special_character_escape(s)
        s
      end
      txt_arr << arr << en
      #txt_arr=txt_arr.flatten
      txt=txt_arr.flatten.join("\n")
      txt=special_character_escape(txt)
      txt
    end
    def strip_markup(str) #define rules, make same as in dal clean
      str=str.gsub(/#{Mx[:fa_superscript_o]}(\d+)#{Mx[:fa_superscript_c]}/,'[\1]').
        gsub(/(?:&nbsp\\;|#{Mx[:nbsp]})+/,' ').
        gsub(/#{Mx[:tc_o]}#{Mx[:tc_p]}#{Mx[:tc_p]}\d+(.+)#{Mx[:tc_c]}/u,'\1').         #tables
        gsub(/#{Mx[:tc_p]}#{Mx[:tc_p]}\d+#{Mx[:tc_p]}/u,' ').                          #tables
        gsub(/#{Mx[:tc_p]}/u,' ').                                                     #tables tidy later
        gsub(/<.+?>/,'').
        gsub(/#{Mx[:lnk_o]}.+?\.(?:png|jpg|gif).+?#{Mx[:lnk_c]}(?:file|ftp)\/\/:\S+ /,' [image] '). # else image names found in search
        gsub(/#{Mx[:lnk_o]}.+?\.(?:png|jpg|gif).+?#{Mx[:lnk_c]}#{Mx[:url_o]}\S+?#{Mx[:url_c]}/,' [image]'). # else image names found in search
        gsub(/\s\s+/,' ').
        strip
    end
    def unique_words(str)
      a=str.scan(/[a-zA-Z0-9\\\/_-]{2,}/) #a=str.scan(/\S+{2,}/)
      str=a.uniq.sort.join(' ')
      str
    end
  end
end
__END__