Module: CodeRay

Defined in:
lib/coderay.rb,
lib/coderay/duo.rb,
lib/coderay/style.rb,
lib/coderay/tokens.rb,
lib/coderay/encoder.rb,
lib/coderay/scanner.rb,
lib/coderay/scanners/c.rb,
lib/coderay/styles/_map.rb,
lib/coderay/encoders/div.rb,
lib/coderay/encoders/xml.rb,
lib/coderay/for_redcloth.rb,
lib/coderay/scanners/cpp.rb,
lib/coderay/scanners/sql.rb,
lib/coderay/scanners/xml.rb,
lib/coderay/encoders/_map.rb,
lib/coderay/encoders/html.rb,
lib/coderay/encoders/json.rb,
lib/coderay/encoders/null.rb,
lib/coderay/encoders/page.rb,
lib/coderay/encoders/span.rb,
lib/coderay/encoders/term.rb,
lib/coderay/encoders/text.rb,
lib/coderay/encoders/yaml.rb,
lib/coderay/scanners/_map.rb,
lib/coderay/scanners/diff.rb,
lib/coderay/scanners/html.rb,
lib/coderay/scanners/java.rb,
lib/coderay/scanners/json.rb,
lib/coderay/scanners/ruby.rb,
lib/coderay/scanners/yaml.rb,
lib/coderay/styles/cycnus.rb,
lib/coderay/styles/murphy.rb,
lib/coderay/token_classes.rb,
lib/coderay/encoders/count.rb,
lib/coderay/encoders/debug.rb,
lib/coderay/helpers/plugin.rb,
lib/coderay/scanners/debug.rb,
lib/coderay/scanners/rhtml.rb,
lib/coderay/encoders/filter.rb,
lib/coderay/scanners/delphi.rb,
lib/coderay/scanners/groovy.rb,
lib/coderay/scanners/python.rb,
lib/coderay/scanners/scheme.rb,
lib/coderay/encoders/html/css.rb,
lib/coderay/helpers/file_type.rb,
lib/coderay/helpers/word_list.rb,
lib/coderay/encoders/statistic.rb,
lib/coderay/scanners/plaintext.rb,
lib/coderay/encoders/html/output.rb,
lib/coderay/scanners/java_script.rb,
lib/coderay/scanners/nitro_xhtml.rb,
lib/coderay/encoders/lines_of_code.rb,
lib/coderay/scanners/ruby/patterns.rb,
lib/coderay/encoders/comment_filter.rb,
lib/coderay/encoders/html/numerization.rb,
lib/coderay/encoders/token_class_filter.rb,
lib/coderay/scanners/java/builtin_types.rb

Overview

encoders/term.rb By Rob Aldred (robaldred.co.uk) Based on idea by Nathan Weizenbaum (nex-3.com) MIT License (www.opensource.org/licenses/mit-license.php)

A CodeRay encoder that outputs code highlighted for a color terminal. Check out robaldred.co.uk

Defined Under Namespace

Modules: Encoders, FileType, ForRedCloth, Plugin, PluginHost, Scanners, Streamable, Styles Classes: CaseIgnoringWordList, Duo, NotStreamableError, TokenStream, Tokens, WordList

Constant Summary collapse

VERSION =

Version: Major.Minor.Teeny Major: 0 for pre-stable, 1 for stable Minor: feature milestone Teeny: development state, 0 for pre-release Revision: Subversion Revision number (generated on rake gem:make)

'0.9.1'

Class Method Summary collapse

Class Method Details

.encode(code, lang, format, options = {}) ⇒ Object

Encode a string.

This scans code with the the Scanner for lang and then encodes it with the Encoder for format. options will be passed to the Encoder.

See CodeRay::Encoder.encode



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# File 'lib/coderay.rb', line 207

def encode code, lang, format, options = {}
  encoder(format, options).encode code, lang, options
end

.encode_file(filename, format, options = {}) ⇒ Object

Encodes filename (a path to a code file) with the Scanner for lang.

See CodeRay.scan_file. Notice that the second argument is the output format, not the input language.

Example:

require 'coderay'
page = CodeRay.encode_file 'some_c_code.c', :html



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# File 'lib/coderay.rb', line 242

def encode_file filename, format, options = {}
  tokens = scan_file filename, :auto, get_scanner_options(options)
  encode_tokens tokens, format, options
end

.encode_stream(code, lang, format, options = {}) ⇒ Object

Encode a string in Streaming mode.

This starts scanning code with the the Scanner for lang while encodes the output with the Encoder for format. options will be passed to the Encoder.

See CodeRay::Encoder.encode_stream



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# File 'lib/coderay.rb', line 196

def encode_stream code, lang, format, options = {}
  encoder(format, options).encode_stream code, lang, options
end

.encode_tokens(tokens, format, options = {}) ⇒ Object

Encode pre-scanned Tokens. Use this together with CodeRay.scan:

require 'coderay'

# Highlight a short Ruby code example in a HTML span
tokens = CodeRay.scan '1 + 2', :ruby
puts CodeRay.encode_tokens(tokens, :span)



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# File 'lib/coderay.rb', line 230

def encode_tokens tokens, format, options = {}
  encoder(format, options).encode_tokens tokens, options
end

.encoder(format, options = {}) ⇒ Object

Finds the Encoder class for format and creates an instance, passing options to it.

Example:

require 'coderay'

stats = CodeRay.encoder(:statistic)
stats.encode("puts 17 + 4\n", :ruby)

puts '%d out of %d tokens have the kind :integer.' % [
  stats.type_stats[:integer].count,
  stats.real_token_count
]
#-> 2 out of 4 tokens have the kind :integer.



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# File 'lib/coderay.rb', line 271

def encoder format, options = {}
  Encoders[format].new options
end

.get_scanner_options(options) ⇒ Object

Extract the options for the scanner from the options hash.

Returns an empty Hash if :scanner_options is not set.

This is used if a method like CodeRay.encode has to provide options for Encoder and scanner.



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# File 'lib/coderay.rb', line 289

def get_scanner_options options
  options.fetch :scanner_options, {}
end

.highlight(code, lang, options = { :css => :class }, format = :div) ⇒ Object

Highlight a string into a HTML <div>.

CSS styles use classes, so you have to include a stylesheet in your output.

See encode.



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# File 'lib/coderay.rb', line 217

def highlight code, lang, options = { :css => :class }, format = :div
  encode code, lang, format, options
end

.highlight_file(filename, options = { :css => :class }, format = :div) ⇒ Object

Highlight a file into a HTML <div>.

CSS styles use classes, so you have to include a stylesheet in your output.

See encode.



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# File 'lib/coderay.rb', line 253

def highlight_file filename, options = { :css => :class }, format = :div
  encode_file filename, format, options
end

.require_plugin(path) ⇒ Object

Convenience method for plugin loading. The syntax used is:

CodeRay.require_plugin '<Host ID>/<Plugin ID>'

Returns the loaded plugin.

Raises:



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# File 'lib/coderay/helpers/plugin.rb', line 341

def self.require_plugin path
  host_id, plugin_id = path.split '/', 2
  host = PluginHost.host_by_id(host_id)
  raise PluginHost::HostNotFound,
    "No host for #{host_id.inspect} found." unless host
  host.load plugin_id
end

.scan(code, lang, options = {}, &block) ⇒ Object

Scans the given code (a String) with the Scanner for lang.

This is a simple way to use CodeRay. Example:

require 'coderay'
page = CodeRay.scan("puts 'Hello, world!'", :ruby).html

See also demo/demo_simple.



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# File 'lib/coderay.rb', line 154

def scan code, lang, options = {}, &block
  scanner = Scanners[lang].new code, options, &block
  scanner.tokenize
end

.scan_file(filename, lang = :auto, options = {}, &block) ⇒ Object

Scans filename (a path to a code file) with the Scanner for lang.

If lang is :auto or omitted, the CodeRay::FileType module is used to determine it. If it cannot find out what type it is, it uses CodeRay::Scanners::Plaintext.

Calls CodeRay.scan.

Example:

require 'coderay'
page = CodeRay.scan_file('some_c_code.c').html



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# File 'lib/coderay.rb', line 170

def scan_file filename, lang = :auto, options = {}, &block
  file = IO.read filename
  if lang == :auto
    require 'coderay/helpers/file_type'
    lang = FileType.fetch filename, :plaintext, true
  end
  scan file, lang, options = {}, &block
end

.scan_stream(code, lang, options = {}, &block) ⇒ Object

Scan the code (a string) with the scanner for lang.

Calls scan.

See CodeRay.scan.



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# File 'lib/coderay.rb', line 184

def scan_stream code, lang, options = {}, &block
  options[:stream] = true
  scan code, lang, options, &block
end

.scanner(lang, options = {}) ⇒ Object

Finds the Scanner class for lang and creates an instance, passing options to it.

See Scanner.new.



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# File 'lib/coderay.rb', line 279

def scanner lang, options = {}
  Scanners[lang].new '', options
end