Module: OllamaChat::SourceFetching

Included in:
Chat
Defined in:
lib/ollama_chat/source_fetching.rb

Instance Method Summary collapse

Instance Method Details

#add_image(images, source_io, source) ⇒ Object 



44
45
46
47
48
 
# File 'lib/ollama_chat/source_fetching.rb', line 44

def add_image(images, source_io, source)
  STDERR.puts "Adding #{source_io&.content_type} image #{source.to_s.inspect}."
  image = Ollama::Image.for_io(source_io, path: source.to_s)
  (images << image).uniq!
end

#embed(source) ⇒ Object 



128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
 
# File 'lib/ollama_chat/source_fetching.rb', line 128

def embed(source)
  if @embedding.on?
    STDOUT.puts "Now embedding #{source.to_s.inspect}."
    fetch_source(source) do |source_io|
      content = parse_source(source_io)
      content.present? or return
      source_io.rewind
      embed_source(source_io, source)
    end
    config.prompts.embed % { source: }
  else
    STDOUT.puts "Embedding is off, so I will just give a small summary of this source."
    summarize(source)
  end
end

#embed_source(source_io, source, count: nil) ⇒ Object 



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
 
# File 'lib/ollama_chat/source_fetching.rb', line 82

def embed_source(source_io, source, count: nil)
  @embedding.on? or return parse_source(source_io)
  m = "Embedding #{italic { source_io&.content_type }} document #{source.to_s.inspect}."
  if count
    STDOUT.puts '%u. %s' % [ count, m ]
  else
    STDOUT.puts m
  end
  text = parse_source(source_io) or return
  text.downcase!
  splitter_config = config.embedding.splitter
  inputs = nil
  case splitter_config.name
  when 'Character'
    splitter = Documentrix::Documents::Splitters::Character.new(
      chunk_size: splitter_config.chunk_size,
    )
    inputs = splitter.split(text)
  when 'RecursiveCharacter'
    splitter = Documentrix::Documents::Splitters::RecursiveCharacter.new(
      chunk_size: splitter_config.chunk_size,
    )
    inputs = splitter.split(text)
  when 'Semantic'
    splitter = Documentrix::Documents::Splitters::Semantic.new(
      ollama:, model: config.embedding.model.name,
      chunk_size: splitter_config.chunk_size,
    )
    inputs = splitter.split(
      text,
      breakpoint: splitter_config.breakpoint.to_sym,
      percentage: splitter_config.percentage?,
      percentile: splitter_config.percentile?,
    )
  end
  inputs or return
  source = source.to_s
  if source.start_with?(?!)
    source = Kramdown::ANSI::Width.truncate(
      source[1..-1].gsub(/\W+/, ?_),
      length: 10
    )
  end
  @documents.add(inputs, source:, batch_size: config.embedding.batch_size?)
end

#fetch_source(source, &block) ⇒ Object 



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
 
# File 'lib/ollama_chat/source_fetching.rb', line 14

def fetch_source(source, &block)
  case source
  when %r(\A!(.*))
    command = $1
    OllamaChat::Utils::Fetcher.execute(command) do |tmp|
      block.(tmp)
    end
  when %r(\Ahttps?://\S+)
    links.add(source.to_s)
    OllamaChat::Utils::Fetcher.get(
      source,
      cache:        @cache,
      debug:        config.debug,
      http_options: http_options(OllamaChat::Utils::Fetcher.normalize_url(source))
    ) do |tmp|
      block.(tmp)
    end
  when %r(\Afile://(/\S*?)#|\A((?:\.\.|[~.]?)/\S*))
    filename = $~.captures.compact.first
    filename = File.expand_path(filename)
    OllamaChat::Utils::Fetcher.read(filename) do |tmp|
      block.(tmp)
    end
  else
    raise "invalid source"
  end
rescue => e
  STDERR.puts "Cannot fetch source #{source.to_s.inspect}: #{e.class} #{e}\n#{e.backtrace * ?\n}"
end

#http_options(url) ⇒ Object 



2
3
4
5
6
7
8
9
10
11
12
 
# File 'lib/ollama_chat/source_fetching.rb', line 2

def http_options(url)
  options = {}
  if ssl_no_verify = config.ssl_no_verify?
    hostname = URI.parse(url).hostname
    options |= { ssl_verify_peer: !ssl_no_verify.include?(hostname) }
  end
  if proxy = config.proxy?
    options |= { proxy: }
  end
  options
end

#import(source) ⇒ Object 



57
58
59
60
61
62
63
 
# File 'lib/ollama_chat/source_fetching.rb', line 57

def import(source)
  fetch_source(source) do |source_io|
    content = import_source(source_io, source) or return
    source_io.rewind
    content
  end
end

#import_source(source_io, source) ⇒ Object 



50
51
52
53
54
55
 
# File 'lib/ollama_chat/source_fetching.rb', line 50

def import_source(source_io, source)
  source = source.to_s
  STDOUT.puts "Importing #{italic { source_io&.content_type }} document #{source.to_s.inspect} now."
  source_content = parse_source(source_io)
  "Imported #{source.inspect}:\n\n#{source_content}\n\n"
end

#search_web(query, n = nil) ⇒ Object 



144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
 
# File 'lib/ollama_chat/source_fetching.rb', line 144

def search_web(query, n = nil)
  if l = @messages.at_location.full?
    query += " #{l}"
  end
  n = n.to_i.clamp(1..)
  query = URI.encode_uri_component(query)
  url = "https://www.duckduckgo.com/html/?q=#{query}"
  OllamaChat::Utils::Fetcher.get(url, debug: config.debug) do |tmp|
    result = []
    doc = Nokogiri::HTML(tmp)
    doc.css('.results_links').each do |link|
      if n > 0
        url = link.css('.result__a').first&.[]('href')
        url.sub!(%r(\A(//duckduckgo\.com)?/l/\?uddg=), '')
        url.sub!(%r(&rut=.*), '')
        url = URI.decode_uri_component(url)
        url = URI.parse(url)
        url.host =~ /duckduckgo\.com/ and next
        links.add(url.to_s)
        result << url
        n -= 1
      else
        break
      end
    end
    result
  end
end

#summarize(source, words: nil) ⇒ Object 



74
75
76
77
78
79
80
 
# File 'lib/ollama_chat/source_fetching.rb', line 74

def summarize(source, words: nil)
  fetch_source(source) do |source_io|
    content = summarize_source(source_io, source, words:) or return
    source_io.rewind
    content
  end
end

#summarize_source(source_io, source, words: nil) ⇒ Object 



65
66
67
68
69
70
71
72
 
# File 'lib/ollama_chat/source_fetching.rb', line 65

def summarize_source(source_io, source, words: nil)
  STDOUT.puts "Summarizing #{italic { source_io&.content_type }} document #{source.to_s.inspect} now."
  words = words.to_i
  words < 1 and words = 100
  source_content = parse_source(source_io)
  source_content.present? or return
  config.prompts.summarize % { source_content:, words: }
end