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module Linguist
class Generated
# Public: Is the blob a generated file?
#
# name - String filename
# data - String blob data. A block also may be passed in for lazy
# loading. This behavior is deprecated and you should always
# pass in a String.
#
# Return true or false
def self.generated?(name, data)
new(name, data).generated?
end
# Internal: Initialize Generated instance
#
# name - String filename
# data - String blob data
def initialize(name, data)
@name = name
@extname = File.extname(name)
@_data = data
end
attr_reader :name, :extname
# Lazy load blob data if block was passed in.
#
# Awful, awful stuff happening here.
#
# Returns String data.
def data
@data ||= @_data.respond_to?(:call) ? @_data.call() : @_data
end
# Public: Get each line of data
#
# Returns an Array of lines
def lines
# TODO: data should be required to be a String, no nils
@lines ||= data ? data.split("\n", -1) : []
end
# Internal: Is the blob a generated file?
#
# Generated source code is suppressed in diffs and is ignored by
# language statistics.
#
# Please add additional test coverage to
# `test/test_blob.rb#test_generated` if you make any changes.
#
# Return true or false
def generated?
xcode_file? ||
intellij_file? ||
cocoapods? ||
carthage_build? ||
generated_graphql_relay? ||
generated_net_designer_file? ||
generated_net_specflow_feature_file? ||
composer_lock? ||
cargo_lock? ||
flake_lock? ||
node_modules? ||
go_vendor? ||
go_lock? ||
poetry_lock? ||
pdm_lock? ||
esy_lock? ||
npm_shrinkwrap_or_package_lock? ||
terraform_lock? ||
generated_yarn_plugnplay? ||
godeps? ||
generated_by_zephir? ||
minified_files? ||
has_source_map? ||
source_map? ||
compiled_coffeescript? ||
generated_parser? ||
generated_net_docfile? ||
generated_postscript? ||
compiled_cython_file? ||
pipenv_lock? ||
generated_go? ||
generated_protocol_buffer_from_go? ||
generated_protocol_buffer? ||
generated_javascript_protocol_buffer? ||
generated_apache_thrift? ||
generated_jni_header? ||
vcr_cassette? ||
generated_antlr? ||
generated_module? ||
generated_unity3d_meta? ||
generated_racc? ||
generated_jflex? ||
generated_grammarkit? ||
generated_roxygen2? ||
generated_html? ||
generated_jison? ||
generated_grpc_cpp? ||
generated_dart? ||
generated_perl_ppport_header? ||
generated_gamemakerstudio? ||
generated_gimp? ||
generated_visualstudio6? ||
generated_haxe? ||
generated_jooq? ||
generated_pascal_tlb? ||
generated_sorbet_rbi?
end
# Internal: Is the blob an Xcode file?
#
# Generated if the file extension is an Xcode
# file extension.
#
# Returns true or false.
def xcode_file?
['.nib', '.xcworkspacedata', '.xcuserstate'].include?(extname)
end
# Internal: Is the blob an IntelliJ IDEA project file?
#
# JetBrains IDEs generate project files under an `.idea` directory
# that are sometimes checked into version control.
#
# Returns true or false.
def intellij_file?
!!name.match(/(?:^|\/)\.idea\//)
end
# Internal: Is the blob part of Pods/, which contains dependencies not meant for humans in pull requests.
#
# Returns true or false.
def cocoapods?
!!name.match(/(^Pods|\/Pods)\//)
end
# Internal: Is the blob part of Carthage/Build/, which contains dependencies not meant for humans in pull requests.
#
# Returns true or false.
def carthage_build?
!!name.match(/(^|\/)Carthage\/Build\//)
end
# Internal: Does extname indicate a filetype which is commonly minified?
#
# Returns true or false.
def maybe_minified?
['.js', '.css'].include? extname.downcase
end
# Internal: Is the blob a minified file?
#
# Consider a file minified if the average line length is
# greater then 110c.
#
# Currently, only JS and CSS files are detected by this method.
#
# Returns true or false.
def minified_files?
if maybe_minified? and lines.any?
(lines.inject(0) { |n, l| n += l.length } / lines.length) > 110
else
false
end
end
# Internal: Does the blob contain a source-map reference?
#
# We assume that if one of the last 2 lines starts with a source-map
# reference, then the current file was generated from other files.
#
# We use the last 2 lines because the last line might be empty.
#
# Returns true or false.
def has_source_map?
return false unless maybe_minified?
lines.last(2).any? { |l| l.match(/^\/[*\/][\#@] source(?:Mapping)?URL|sourceURL=/) }
end
# Internal: Is the blob a generated source-map?
#
# Source-maps usually have .css.map or .js.map extensions. In case they
# are not following the name convention, detect them based on the content.
#
# Returns true or false.
def source_map?
return false unless extname.downcase == '.map'
name =~ /(\.css|\.js)\.map$/i || # Name convention
lines[0] =~ /^{"version":\d+,/ || # Revision 2 and later begin with the version number
lines[0] =~ /^\/\*\* Begin line maps\. \*\*\/{/ # Revision 1 begins with a magic comment
end
# Internal: Is the blob of JS generated by CoffeeScript?
#
# CoffeeScript is meant to output JS that would be difficult to
# tell if it was generated or not. Look for a number of patterns
# output by the CS compiler.
#
# Return true or false
def compiled_coffeescript?
return false unless extname == '.js'
# CoffeeScript generated by > 1.2 include a comment on the first line
if lines[0] =~ /^\/\/ Generated by /
return true
end
if lines[0] == '(function() {' && # First line is module closure opening
lines[-2] == '}).call(this);' && # Second to last line closes module closure
lines[-1] == '' # Last line is blank
score = 0
lines.each do |line|
if line =~ /var /
# Underscored temp vars are likely to be Coffee
score += 1 * line.gsub(/(_fn|_i|_len|_ref|_results)/).count
# bind and extend functions are very Coffee specific
score += 3 * line.gsub(/(__bind|__extends|__hasProp|__indexOf|__slice)/).count
end
end
# Require a score of 3. This is fairly arbitrary. Consider
# tweaking later.
score >= 3
else
false
end
end
# Internal: Is this a generated documentation file for a .NET assembly?
#
# .NET developers often check in the XML Intellisense file along with an
# assembly - however, these don't have a special extension, so we have to
# dig into the contents to determine if it's a docfile. Luckily, these files
# are extremely structured, so recognizing them is easy.
#
# Returns true or false
def generated_net_docfile?
return false unless extname.downcase == ".xml"
return false unless lines.count > 3
# .NET Docfiles always open with <doc> and their first tag is an
# <assembly> tag
return lines[1].include?("<doc>") &&
lines[2].include?("<assembly>") &&
lines[-2].include?("</doc>")
end
# Internal: Is this a codegen file for a .NET project?
#
# Visual Studio often uses code generation to generate partial classes, and
# these files can be quite unwieldy. Let's hide them.
#
# Returns true or false
def generated_net_designer_file?
!!name.match(/\.designer\.(cs|vb)$/i)
end
# Internal: Is this a codegen file for Specflow feature file?
#
# Visual Studio's SpecFlow extension generates *.feature.cs files
# from *.feature files, they are not meant to be consumed by humans.
# Let's hide them.
#
# Returns true or false
def generated_net_specflow_feature_file?
!!name.match(/\.feature\.cs$/i)
end
# Internal: Is the blob of JS a parser generated by PEG.js?
#
# PEG.js-generated parsers are not meant to be consumed by humans.
#
# Return true or false
def generated_parser?
return false unless extname == '.js'
# PEG.js-generated parsers include a comment near the top of the file
# that marks them as such.
if lines[0..4].join('') =~ /^(?:[^\/]|\/[^\*])*\/\*(?:[^\*]|\*[^\/])*Generated by PEG.js/
return true
end
false
end
# Internal: Is the blob of PostScript generated?
#
# PostScript files are often generated by other programs. If they tell us so,
# we can detect them.
#
# Returns true or false.
def generated_postscript?
return false unless ['.ps', '.eps', '.pfa'].include? extname
# Type 1 and Type 42 fonts converted to PostScript are stored as hex-encoded byte streams; these
# streams are always preceded the `eexec` operator (if Type 1), or the `/sfnts` key (if Type 42).
return true if data =~ /(\n|\r\n|\r)\s*(?:currentfile eexec\s+|\/sfnts\s+\[\1<)\h{8,}\1/
# We analyze the "%%Creator:" comment, which contains the author/generator
# of the file. If there is one, it should be in one of the first few lines.
creator = lines[0..9].find {|line| line =~ /^%%Creator: /}
return false if creator.nil?
# Most generators write their version number, while human authors' or companies'
# names don't contain numbers. So look if the line contains digits. Also
# look for some special cases without version numbers.
return true if creator =~ /[0-9]|draw|mpage|ImageMagick|inkscape|MATLAB/ ||
creator =~ /PCBNEW|pnmtops|\(Unknown\)|Serif Affinity|Filterimage -tops/
# EAGLE doesn't include a version number when it generates PostScript.
# However, it does prepend its name to the document's "%%Title" field.
!!creator.include?("EAGLE") and lines[0..4].find {|line| line =~ /^%%Title: EAGLE Drawing /}
end
def generated_go?
return false unless extname == '.go'
return false unless lines.count > 1
return lines.first(40).any? { |l| l =~ %r{^// Code generated .*} }
end
# Internal: Is the blob a protocol buffer file generated by the
# go-to-protobuf tool?
#
# Returns true or false
def generated_protocol_buffer_from_go?
return false unless extname == '.proto'
return false unless lines.count > 1
return lines.first(20).any? { |l| l.include? "This file was autogenerated by go-to-protobuf" }
end
PROTOBUF_EXTENSIONS = ['.py', '.java', '.h', '.cc', '.cpp', '.m', '.rb', '.php']
# Internal: Is the blob a C++, Java or Python source file generated by the
# Protocol Buffer compiler?
#
# Returns true or false.
def generated_protocol_buffer?
return false unless PROTOBUF_EXTENSIONS.include?(extname)
return false unless lines.count > 1
return lines.first(3).any? { |l| l.include?("Generated by the protocol buffer compiler. DO NOT EDIT!") }
end
# Internal: Is the blob a Javascript source file generated by the
# Protocol Buffer compiler?
#
# Returns true or false.
def generated_javascript_protocol_buffer?
return false unless extname == ".js"
return false unless lines.count > 6
return lines[5].include?("GENERATED CODE -- DO NOT EDIT!")
end
APACHE_THRIFT_EXTENSIONS = ['.rb', '.py', '.go', '.js', '.m', '.java', '.h', '.cc', '.cpp', '.php']
# Internal: Is the blob generated by Apache Thrift compiler?
#
# Returns true or false
def generated_apache_thrift?
return false unless APACHE_THRIFT_EXTENSIONS.include?(extname)
return lines.first(6).any? { |l| l.include?("Autogenerated by Thrift Compiler") }
end
# Internal: Is the blob a C/C++ header generated by the Java JNI tool javah?
#
# Returns true or false.
def generated_jni_header?
return false unless extname == '.h'
return false unless lines.count > 2
return lines[0].include?("/* DO NOT EDIT THIS FILE - it is machine generated */") &&
lines[1].include?("#include <jni.h>")
end
# Internal: Is the blob part of node_modules/, which are not meant for humans in pull requests.
#
# Returns true or false.
def node_modules?
!!name.match(/node_modules\//)
end
# Internal: Is the blob part of the Go vendor/ tree,
# not meant for humans in pull requests.
#
# Returns true or false.
def go_vendor?
!!name.match(/vendor\/((?!-)[-0-9A-Za-z]+(?<!-)\.)+(com|edu|gov|in|me|net|org|fm|io)/)
end
# Internal: Is the blob a generated Go dep or glide lock file?
#
# Returns true or false.
def go_lock?
!!name.match(/(Gopkg|glide)\.lock/)
end
# Internal: Is the blob a generated poetry.lock?
#
# Returns true or false.
def poetry_lock?
!!name.match(/poetry\.lock/)
end
# Internal: Is the blob a generated pdm.lock?
#
# Returns true or false.
def pdm_lock?
!!name.match(/pdm\.lock/)
end
# Internal: Is the blob a generated esy lock file?
#
# Returns true or false.
def esy_lock?
!!name.match(/(^|\/)(\w+\.)?esy.lock$/)
end
# Internal: Is the blob a generated npm shrinkwrap or package lock file?
#
# Returns true or false.
def npm_shrinkwrap_or_package_lock?
!!name.match(/npm-shrinkwrap\.json/) || !!name.match(/package-lock\.json/)
end
# Internal: Is the blob a generated Yarn Plug'n'Play?
#
# Returns true or false.
def generated_yarn_plugnplay?
!!name.match(/(^|\/)\.pnp\..*$/)
end
# Internal: Is the blob part of Godeps/,
# which are not meant for humans in pull requests.
#
# Returns true or false.
def godeps?
!!name.match(/Godeps\//)
end
# Internal: Is the blob a generated php composer lock file?
#
# Returns true or false.
def composer_lock?
!!name.match(/composer\.lock/)
end
# Internal: Is the blob generated by Zephir?
#
# Returns true or false.
def generated_by_zephir?
!!name.match(/.\.zep\.(?:c|h|php)$/)
end
# Internal: Is the blob a generated Rust Cargo lock file?
#
# Returns true or false.
def cargo_lock?
!!name.match(/Cargo\.lock/)
end
# Internal: Is the blob a generated Nix flakes lock file?
#
# Returns true or false
def flake_lock?
!!name.match(/(^|\/)flake\.lock$/)
end
# Is the blob a VCR Cassette file?
#
# Returns true or false
def vcr_cassette?
return false unless extname == '.yml'
return false unless lines.count > 2
# VCR Cassettes have "recorded_with: VCR" in the second last line.
return lines[-2].include?("recorded_with: VCR")
end
# Is this a generated ANTLR file?
#
# Returns true or false
def generated_antlr?
return false unless extname == '.g'
return false unless lines.count > 2
return lines[1].include?("generated by Xtest")
end
# Internal: Is this a compiled C/C++ file from Cython?
#
# Cython-compiled C/C++ files typically contain:
# /* Generated by Cython x.x.x on ... */
# on the first line.
#
# Return true or false
def compiled_cython_file?
return false unless ['.c', '.cpp'].include? extname
return false unless lines.count > 1
return lines[0].include?("Generated by Cython")
end
# Internal: Is this a Pipenv lock file?
#
# Returns true or false.
def pipenv_lock?
!!name.match(/Pipfile\.lock/)
end
# Internal: Is this a Terraform lock file?
#
# Returns true or false.
def terraform_lock?
!!name.match(/(?:^|\/)\.terraform\.lock\.hcl$/)
end
# Internal: Is it a KiCAD or GFortran module file?
#
# KiCAD module files contain:
# PCBNEW-LibModule-V1 yyyy-mm-dd h:mm:ss XM
# on the first line.
#
# GFortran module files contain:
# GFORTRAN module version 'x' created from
# on the first line.
#
# Return true or false
def generated_module?
return false unless extname == '.mod'
return false unless lines.count > 1
return lines[0].include?("PCBNEW-LibModule-V") ||
lines[0].include?("GFORTRAN module version '")
end
# Internal: Is this a metadata file from Unity3D?
#
# Unity3D Meta files start with:
# fileFormatVersion: X
# guid: XXXXXXXXXXXXXXX
#
# Return true or false
def generated_unity3d_meta?
return false unless extname == '.meta'
return false unless lines.count > 1
return lines[0].include?("fileFormatVersion: ")
end
# Internal: Is this a Racc-generated file?
#
# A Racc-generated file contains:
# # This file is automatically generated by Racc x.y.z
# on the third line.
#
# Return true or false
def generated_racc?
return false unless extname == '.rb'
return false unless lines.count > 2
return lines[2].start_with?("# This file is automatically generated by Racc")
end
# Internal: Is this a JFlex-generated file?
#
# A JFlex-generated file contains:
# /* The following code was generated by JFlex x.y.z on d/at/e ti:me */
# on the first line.
#
# Return true or false
def generated_jflex?
return false unless extname == '.java'
return false unless lines.count > 1
return lines[0].start_with?("/* The following code was generated by JFlex ")
end
# Internal: Is this a GrammarKit-generated file?
#
# A GrammarKit-generated file typically contain:
# // This is a generated file. Not intended for manual editing.
# on the first line. This is not always the case, as it's possible to
# customize the class header.
#
# Return true or false
def generated_grammarkit?
return false unless extname == '.java'
return false unless lines.count > 1
return lines[0].start_with?("// This is a generated file. Not intended for manual editing.")
end
# Internal: Is this a roxygen2-generated file?
#
# A roxygen2-generated file typically contain:
# % Generated by roxygen2: do not edit by hand
# on the first line.
#
# Return true or false
def generated_roxygen2?
return false unless extname == '.Rd'
return false unless lines.count > 1
return lines[0].include?("% Generated by roxygen2: do not edit by hand")
end
# Internal: Is this a Jison-generated file?
#
# Jison-generated parsers typically contain:
# /* parser generated by jison
# on the first line.
#
# Jison-generated lexers typically contain:
# /* generated by jison-lex
# on the first line.
#
# Return true or false
def generated_jison?
return false unless extname == '.js'
return false unless lines.count > 1
return lines[0].start_with?("/* parser generated by jison ") ||
lines[0].start_with?("/* generated by jison-lex ")
end
# Internal: Is this a protobuf/grpc-generated C++ file?
#
# A generated file contains:
# // Generated by the gRPC C++ plugin.
# on the first line.
#
# Return true or false
def generated_grpc_cpp?
return false unless %w{.cpp .hpp .h .cc}.include? extname
return false unless lines.count > 1
return lines[0].start_with?("// Generated by the gRPC")
end
# Internal: Is this a generated Dart file?
#
# A dart-lang/appengine generated file contains:
# // Generated code. Do not modify.
# on the first line.
#
# An owl generated file contains:
# // GENERATED CODE - DO NOT MODIFY
# on the first line.
#
# Return true or false
def generated_dart?
return false unless extname == '.dart'
return false unless lines.count > 1
return lines.first.downcase =~ /generated code\W{2,3}do not modify/
end
# Internal: Is the file a generated Perl/Pollution/Portability header file?
#
# Returns true or false.
def generated_perl_ppport_header?
return false unless name.match(/ppport\.h$/)
return false unless lines.count > 10
return lines[8].include?("Automatically created by Devel::PPPort")
end
# Internal: Is this a relay-compiler generated graphql file?
#
# Return true or false
def generated_graphql_relay?
!!name.match(/__generated__\//)
end
# Internal: Is this a generated Game Maker Studio (2) metadata file?
#
# All Game Maker Studio 2 generated files will be JSON, .yy or .yyp, and have
# a part that looks like "modelName: GMname" on the 3rd line
#
# Return true or false
def generated_gamemakerstudio?
return false unless ['.yy', '.yyp'].include? extname
return false unless lines.count > 3
return lines[2].match(/\"modelName\"\:\s*\"GM/) ||
lines[0] =~ /^\d\.\d\.\d.+\|\{/
end
# Internal: Is this a generated GIMP C image file?
#
# GIMP saves C sources with one of two comment forms:
# * `/* GIMP RGB C-Source image dump (<filename>.c) */` (C source export)
# * `/* GIMP header image file format (RGB): <filename>.h */` (Header export)
#
# Return true or false
def generated_gimp?
return false unless ['.c', '.h'].include? extname
return false unless lines.count > 0
return lines[0].match(/\/\* GIMP [a-zA-Z0-9\- ]+ C\-Source image dump \(.+?\.c\) \*\//) ||
lines[0].match(/\/\* GIMP header image file format \([a-zA-Z0-9\- ]+\)\: .+?\.h \*\//)
end
# Internal: Is this a generated Microsoft Visual Studio 6.0 build file?
#
# Return true or false
def generated_visualstudio6?
return false unless extname.downcase == '.dsp'
lines.first(3).any? { |l| l.include? '# Microsoft Developer Studio Generated Build File' }
end
HAXE_EXTENSIONS = ['.js', '.py', '.lua', '.cpp', '.h', '.java', '.cs', '.php']
# Internal: Is this a generated Haxe-generated source file?
#
# Return true or false
def generated_haxe?
return false unless HAXE_EXTENSIONS.include?(extname)
return lines.first(3).any? { |l| l.include?("Generated by Haxe") }
end
# Internal: Is this a generated HTML file?
#
# HTML documents generated by authoring tools often include a
# a <meta> tag in the header of the form:
#
# <meta name="generator" content="DocGen v5.0.1" />
#
# Return true or false
def generated_html?
return false unless ['.html', '.htm', '.xhtml'].include? extname.downcase
return false unless lines.count > 1
# Pkgdown
return true if lines[0..1].any? do |line|
line.match(/<!-- Generated by pkgdown: do not edit by hand -->/)
end
# Mandoc
return true if lines.count > 2 && lines[2].start_with?('<!-- This is an automatically generated file.')
# Doxygen
return true if lines[0..30].any? do |line|
line.match(/<!--\s+Generated by Doxygen\s+[.0-9]+\s*-->/i)
end
# HTML tag: <meta name="generator" content="…" />
matches = lines[0..30].join(' ').scan(/<meta(\s+[^>]++)>/i)
return false if matches.empty?
return matches.map {|x| extract_html_meta(x) }.any? do |attr|
attr["name"].to_s.downcase == 'generator' &&
[attr["content"], attr["value"]].any? do |cv|
!cv.nil? &&
cv.match(/^
( org \s+ mode
| j?latex2html
| groff
| makeinfo
| texi2html
| ronn
) \b
/ix)
end
end
end
# Internal: Is this a generated jOOQ file?
#
# Return true or false
def generated_jooq?
return false unless extname.downcase == '.java'
lines.first(2).any? { |l| l.include? 'This file is generated by jOOQ.' }
end
# Internal: Is this a generated Delphi Interface file for a type library?
#
# Delphi Type Library Import tool generates *_TLB.pas files based on .ridl files.
# They are not meant to be altered by humans.
#
# Returns true or false
def generated_pascal_tlb?
!!name.match(/_tlb\.pas$/i)
end
# Internal: Is this a Sorbet RBI file generated by Tapioca?
#
# Tapioca generates non-human-editable .rbi files in several different
# ways:
#
# 1. `tapioca gem` uses reflection to generate generic .rbi for gems.
# 2. `tapioca dsl` uses DSL compilers to generate .rbi for modules/classes.
# 3. `tapioca annotations` pulls .rbi from remote sources.
#
# All are marked with similar wording.
#
# Returns true or false
def generated_sorbet_rbi?
return false unless extname.downcase == '.rbi'
return false unless lines.count >= 5
lines[0].match?(/^# typed:/) &&
lines[2].include?("DO NOT EDIT MANUALLY") &&
lines[4].match?(/^# Please.*run.*`.*tapioca/)
end
# Internal: Extract a Hash of name/content pairs from an HTML <meta> tag
def extract_html_meta(match)
(match.last.sub(/\/\Z/, "").strip.scan(/
(?<=^|\s) # Check for preceding whitespace
(name|content|value) # Attribute names we're interested in
\s* = \s* # Key-value separator
# Attribute value
( "[^"]+" # name="value"
| '[^']+' # name='value'
| [^\s"']+ # name=value
)
/ix)).map do |match|
key = match[0].downcase
val = match[1].gsub(/\A["']|["']\Z/, '')
[key, val]
end.select { |x| x.length == 2 }.to_h
end
end
end