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class Keg
PREFIX_PLACEHOLDER = "@@HOMEBREW_PREFIX@@".freeze
CELLAR_PLACEHOLDER = "@@HOMEBREW_CELLAR@@".freeze
REPOSITORY_PLACEHOLDER = "@@HOMEBREW_REPOSITORY@@".freeze
Relocation = Struct.new(:old_prefix, :old_cellar, :old_repository,
:new_prefix, :new_cellar, :new_repository) do
# Use keyword args instead of positional args for initialization
def initialize(**kwargs)
super(*members.map { |k| kwargs[k] })
end
end
def fix_dynamic_linkage
symlink_files.each do |file|
link = file.readlink
# Don't fix relative symlinks
next unless link.absolute?
link_starts_cellar = link.to_s.start_with?(HOMEBREW_CELLAR.to_s)
link_starts_prefix = link.to_s.start_with?(HOMEBREW_PREFIX.to_s)
next if !link_starts_cellar && !link_starts_prefix
new_src = link.relative_path_from(file.parent)
file.unlink
FileUtils.ln_s(new_src, file)
end
end
alias generic_fix_dynamic_linkage fix_dynamic_linkage
def relocate_dynamic_linkage(_relocation)
[]
end
def replace_locations_with_placeholders
relocation = Relocation.new(
old_prefix: HOMEBREW_PREFIX.to_s,
old_cellar: HOMEBREW_CELLAR.to_s,
old_repository: HOMEBREW_REPOSITORY.to_s,
new_prefix: PREFIX_PLACEHOLDER,
new_cellar: CELLAR_PLACEHOLDER,
new_repository: REPOSITORY_PLACEHOLDER,
)
relocate_dynamic_linkage(relocation)
replace_text_in_files(relocation)
end
def replace_placeholders_with_locations(files, skip_linkage: false)
relocation = Relocation.new(
old_prefix: PREFIX_PLACEHOLDER,
old_cellar: CELLAR_PLACEHOLDER,
old_repository: REPOSITORY_PLACEHOLDER,
new_prefix: HOMEBREW_PREFIX.to_s,
new_cellar: HOMEBREW_CELLAR.to_s,
new_repository: HOMEBREW_REPOSITORY.to_s,
)
relocate_dynamic_linkage(relocation) unless skip_linkage
replace_text_in_files(relocation, files: files)
end
def replace_text_in_files(relocation, files: nil)
files ||= text_files | libtool_files
changed_files = []
files.map(&path.method(:join)).group_by { |f| f.stat.ino }.each_value do |first, *rest|
s = first.open("rb", &:read)
replacements = {
relocation.old_prefix => relocation.new_prefix,
relocation.old_cellar => relocation.new_cellar,
relocation.old_repository => relocation.new_repository,
}
changed = s.gsub!(Regexp.union(replacements.keys), replacements)
next unless changed
changed_files += [first, *rest].map { |file| file.relative_path_from(path) }
begin
first.atomic_write(s)
rescue SystemCallError
first.ensure_writable do
first.open("wb") { |f| f.write(s) }
end
else
rest.each { |file| FileUtils.ln(first, file, force: true) }
end
end
changed_files
end
def detect_cxx_stdlibs(_options = {})
[]
end
def recursive_fgrep_args
# for GNU grep; overridden for BSD grep on OS X
"-lr"
end
alias generic_recursive_fgrep_args recursive_fgrep_args
def each_unique_file_matching(string)
Utils.popen_read("fgrep", recursive_fgrep_args, string, to_s) do |io|
hardlinks = Set.new
until io.eof?
file = Pathname.new(io.readline.chomp)
next if file.symlink?
yield file if hardlinks.add? file.stat.ino
end
end
end
def lib
path/"lib"
end
def text_files
text_files = []
return text_files unless which("file") && which("xargs")
# file has known issues with reading files on other locales. Has
# been fixed upstream for some time, but a sufficiently new enough
# file with that fix is only available in macOS Sierra.
# https://bugs.gw.com/view.php?id=292
with_custom_locale("C") do
files = Set.new path.find.reject { |pn|
next true if pn.symlink?
next true if pn.directory?
next false if pn.basename.to_s == "orig-prefix.txt" # for python virtualenvs
next true if pn == self/".brew/#{name}.rb"
next true if Metafiles::EXTENSIONS.include?(pn.extname)
if pn.text_executable?
text_files << pn
next true
end
false
}
output, _status = Open3.capture2("xargs -0 file --no-dereference --print0",
stdin_data: files.to_a.join("\0"))
# `file` output sometimes contains data from the file, which may include
# invalid UTF-8 entities, so tell Ruby this is just a bytestring
output.force_encoding(Encoding::ASCII_8BIT)
output.each_line do |line|
path, info = line.split("\0", 2)
# `file` sometimes prints more than one line of output per file;
# subsequent lines do not contain a null-byte separator, so `info`
# will be `nil` for those lines
next unless info
next unless info.include?("text")
path = Pathname.new(path)
next unless files.include?(path)
text_files << path
end
end
text_files
end
def libtool_files
libtool_files = []
path.find do |pn|
next if pn.symlink? || pn.directory? || ![".la", ".lai"].include?(pn.extname)
libtool_files << pn
end
libtool_files
end
def symlink_files
symlink_files = []
path.find do |pn|
symlink_files << pn if pn.symlink?
end
symlink_files
end
def self.file_linked_libraries(_file, _string)
[]
end
end
require "extend/os/keg_relocate"
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