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 



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# File 'lib/ollama_chat/source_fetching.rb', line 45

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 



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# File 'lib/ollama_chat/source_fetching.rb', line 129

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 



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# File 'lib/ollama_chat/source_fetching.rb', line 83

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 



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# 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,
      headers:      config.request_headers?.to_h,
      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 



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# 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 



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# File 'lib/ollama_chat/source_fetching.rb', line 58

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 



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# File 'lib/ollama_chat/source_fetching.rb', line 51

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

#summarize(source, words: nil) ⇒ Object 



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# File 'lib/ollama_chat/source_fetching.rb', line 75

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 



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# File 'lib/ollama_chat/source_fetching.rb', line 66

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