Class: Pathname

Inherits:
Object show all
Includes:
DiskUsageExtension, ELFShim, MachOShim
Defined in:
extend/pathname.rb,
extend/os/mac/extend/pathname.rb,
extend/os/linux/extend/pathname.rb

Overview

Homebrew extends Ruby’s Pathname to make our code more readable.

See Also:

Instance Method Summary collapse

Methods included from DiskUsageExtension

#abv, #disk_usage, #file_count

Methods included from MachOShim

#arch, #archs, #change_dylib_id, #change_install_name, #change_rpath, #delete_rpath, #dynamically_linked_libraries, #i386?, #mach_o_executable?, #ppc64?, #ppc7400?, #universal?, #x86_64?

Methods included from ELFShim

#arch, #dylib_id, #dynamic_elf?, #dynamically_linked_libraries, #elf?, #elf_type, #interpreter, #patch!, #patchelf_patcher, #read_uint16, #read_uint8, #rpath, #rpath_using_patchelf_rb, #save_using_patchelf_rb

Instance Method Details

#append_lines(content, **open_args) ⇒ void

This method returns an undefined value.

Only appends to a file that is already created.

Parameters:

  • content (String)
  • open_args (T.untyped) 


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# File 'extend/pathname.rb', line 166

def append_lines(content, **open_args)
  raise "Cannot append file that doesn't exist: #{self}" unless exist?

  T.unsafe(self).open("a", **open_args) { |f| f.puts(content) }
end

#atomic_write(content) ⇒ void

Note:

This always overwrites.

This method returns an undefined value.

Parameters:



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# File 'extend/pathname.rb', line 174

def atomic_write(content)
  old_stat = stat if exist?
  File.atomic_write(self) do |file|
    file.write(content)
  end

  return unless old_stat

  # Try to restore original file's permissions separately
  # atomic_write does it itself, but it actually erases
  # them if chown fails
  begin
    # Set correct permissions on new file
    chown(old_stat.uid, nil)
    chown(nil, old_stat.gid)
  rescue Errno::EPERM, Errno::EACCES
    # Changing file ownership failed, moving on.
    nil
  end
  begin
    # This operation will affect filesystem ACL's
    chmod(old_stat.mode)
  rescue Errno::EPERM, Errno::EACCES
    # Changing file permissions failed, moving on.
    nil
  end
end

#binary_executable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'extend/pathname.rb', line 447

def binary_executable?
  false
end

#cd(&_block) ⇒ T.type_parameter(:U)

Parameters:

  • _block (T.proc.params(path: Pathname).returns(T.type_parameter(:U)))

Returns:

  • (T.type_parameter(:U)) 


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# File 'extend/pathname.rb', line 298

def cd(&_block)
  Dir.chdir(self) { yield self }
end

#ds_store? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'extend/pathname.rb', line 442

def ds_store?
  basename.to_s == ".DS_Store"
end

#dylib? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'extend/pathname.rb', line 457

def dylib?
  false
end

#env_script_all_files(dst, env) ⇒ Object

Writes a wrapper env script and moves all files to the dst.



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# File 'extend/pathname.rb', line 395

def env_script_all_files(dst, env)
  dst.mkpath
  Pathname.glob("#{self}/*") do |file|
    next if file.directory?

    dst.install(file)
    new_file = dst.join(file.basename)
    file.write_env_script(new_file, env)
  end
end

#extname ⇒ String

Extended to support common double extensions.

Returns:



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# File 'extend/pathname.rb', line 224

def extname
  basename = File.basename(self)

  bottle_ext, = HOMEBREW_BOTTLES_EXTNAME_REGEX.match(basename).to_a
  return bottle_ext if bottle_ext

  archive_ext = basename[/(\.(tar|cpio|pax)\.(gz|bz2|lz|xz|zst|Z))\Z/, 1]
  return archive_ext if archive_ext

  # Don't treat version numbers as extname.
  return "" if basename.match?(/\b\d+\.\d+[^.]*\Z/) && !basename.end_with?(".7z")

  File.extname(basename)
end

#file_type ⇒ String

Returns:



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# File 'extend/pathname.rb', line 479

def file_type
  @file_type ||= system_command("file", args: ["-b", self], print_stderr: false)
                 .stdout.chomp
end

#install(*sources) ⇒ void

This method returns an undefined value.

Moves a file from the original location to the Pathname’s.

Parameters:



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# File 'extend/pathname.rb', line 88

def install(*sources)
  sources.each do |src|
    case src
    when Resource
      src.stage(self)
    when Resource::Partial
      src.resource.stage { install(*src.files) }
    when Array
      if src.empty?
        opoo "Tried to install empty array to #{self}"
        break
      end
      src.each { |s| install_p(s, File.basename(s)) }
    when Hash
      if src.empty?
        opoo "Tried to install empty hash to #{self}"
        break
      end
      src.each { |s, new_basename| install_p(s, new_basename) }
    else
      install_p(src, File.basename(src))
    end
  end
end

#install_metafiles(from = Pathname.pwd) ⇒ Object 



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# File 'extend/pathname.rb', line 424

def install_metafiles(from = Pathname.pwd)
  Pathname(from).children.each do |p|
    next if p.directory?
    next if File.empty?(p)
    next unless Metafiles.copy?(p.basename.to_s)

    # Some software symlinks these files (see help2man.rb)
    filename = p.resolved_path
    # Some software links metafiles together, so by the time we iterate to one of them
    # we may have already moved it. libxml2's COPYING and Copyright are affected by this.
    next unless filename.exist?

    filename.chmod 0644
    install(filename)
  end
end

#install_symlink(*sources) ⇒ void

This method returns an undefined value.

Creates symlinks to sources in this folder.

Parameters:



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# File 'extend/pathname.rb', line 142

def install_symlink(*sources)
  sources.each do |src|
    case src
    when Array
      src.each { |s| install_symlink_p(s, File.basename(s)) }
    when Hash
      src.each { |s, new_basename| install_symlink_p(s, new_basename) }
    else
      install_symlink_p(src, File.basename(src))
    end
  end
end

#mach_o_bundle? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'extend/pathname.rb', line 452

def mach_o_bundle?
  false
end

#magic_number ⇒ String

Returns:



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# File 'extend/pathname.rb', line 467

def magic_number
  @magic_number ||= if directory?
    ""
  else
    # Length of the longest regex (currently Tar).
    max_magic_number_length = 262
    # FIXME: The `T.let` is a workaround until we have https://github.com/sorbet/sorbet/pull/6865
    T.let(binread(max_magic_number_length), T.nilable(String)) || ""
  end
end

#rpaths ⇒ Array<String>

Returns:



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# File 'extend/pathname.rb', line 462

def rpaths
  []
end

#sha256 ⇒ String

Returns:



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# File 'extend/pathname.rb', line 278

def sha256
  require "digest/sha2"
  Digest::SHA256.file(self).hexdigest
end

#stem ⇒ String

For filetypes we support, returns basename without extension.

Returns:



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# File 'extend/pathname.rb', line 241

def stem
  File.basename(self, extname)
end

#subdirs ⇒ Array<Pathname>

Returns:



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# File 'extend/pathname.rb', line 303

def subdirs
  children.select(&:directory?)
end

#verify_checksum(expected) ⇒ void

This method returns an undefined value.

Parameters:

Raises:



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# File 'extend/pathname.rb', line 284

def verify_checksum(expected)
  raise ChecksumMissingError if expected.blank?

  actual = Checksum.new(sha256.downcase)
  raise ChecksumMismatchError.new(self, expected, actual) if expected != actual
end

#write_env_script(target, args, env = nil) ⇒ Object

Writes an exec script that sets environment variables.



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# File 'extend/pathname.rb', line 380

def write_env_script(target, args, env = nil)
  unless env
    env = args
    args = nil
  end
  env_export = +""
  env.each { |key, value| env_export << "#{key}=\"#{value}\" " }
  dirname.mkpath
  write <<~SH
    #!/bin/bash
    #{env_export}exec "#{target}" #{args} "$@"
  SH
end

#write_exec_script(*targets) ⇒ Object

Writes an exec script in this folder for each target pathname.



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# File 'extend/pathname.rb', line 363

def write_exec_script(*targets)
  targets.flatten!
  if targets.empty?
    opoo "Tried to write exec scripts to #{self} for an empty list of targets"
    return
  end
  mkpath
  targets.each do |target|
    target = Pathname.new(target) # allow pathnames or strings
    join(target.basename).write <<~SH
      #!/bin/bash
      exec "#{target}" "$@"
    SH
  end
end

#write_jar_script(target_jar, script_name, java_opts = "", java_version: nil) ⇒ Integer

Writes an exec script that invokes a Java jar.

Parameters:

Returns:

  • (Integer) 


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# File 'extend/pathname.rb', line 415

def write_jar_script(target_jar, script_name, java_opts = "", java_version: nil)
  mkpath
  (self/script_name).write <<~EOS
    #!/bin/bash
    export JAVA_HOME="#{Language::Java.overridable_java_home_env(java_version)[:JAVA_HOME]}"
    exec "${JAVA_HOME}/bin/java" #{java_opts} -jar "#{target_jar}" "$@"
  EOS
end

#zipinfo ⇒ Array<String>

Returns:



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# File 'extend/pathname.rb', line 485

def zipinfo
  @zipinfo ||= system_command("zipinfo", args: ["-1", self], print_stderr: false)
               .stdout
               .encode(Encoding::UTF_8, invalid: :replace)
               .split("\n")
end