Module: Overcommit::Utils
- Defined in:
- lib/overcommit/utils.rb,
lib/overcommit/utils/file_utils.rb
Overview
Utility functions for general use.
Defined Under Namespace
Modules: FileUtils Classes: Version
Class Attribute Summary collapse
-
.log ⇒ Overcommit::Logger
Logger with which to send debug output.
Class Method Summary collapse
-
.broken_symlink?(file) ⇒ true, false
Returns whether a file is a broken symlink.
-
.camel_case(str) ⇒ Object
Converts a string containing underscores/hyphens/spaces into CamelCase.
-
.convert_glob_to_absolute(glob) ⇒ String
Convert a glob pattern to an absolute path glob pattern rooted from the repository root directory.
-
.execute(initial_args, options = {}) ⇒ Overcommit::Subprocess::Result
Execute a command in a subprocess, capturing exit status and output from both standard and error streams.
-
.execute_in_background(args) ⇒ ChildProcess
Execute a command in a subprocess, returning immediately.
-
.git_dir(repo_dir = repo_root) ⇒ String
Returns an absolute path to the .git directory for a repo.
-
.in_path?(cmd) ⇒ true, false
Whether a command can be found given the current environment path.
-
.matches_path?(pattern, path) ⇒ Boolean
Return whether a pattern matches the given path.
-
.parent_command ⇒ Object
Return the parent command that triggered this hook run.
-
.processor_count ⇒ Object
Return the number of processors used by the OS for process scheduling.
-
.repo_root ⇒ String
Returns an absolute path to the root of the repository.
- .script_path(script) ⇒ Object
-
.snake_case(str) ⇒ Object
Shamelessly stolen from: stackoverflow.com/questions/1509915/converting-camel-case-to-underscore-case-in-ruby.
-
.strip_color_codes(text) ⇒ String
Remove ANSI escape sequences from a string.
-
.supported_hook_type_classes ⇒ Object
Returns a list of supported hook classes (PreCommit, CommitMsg, etc.).
-
.supported_hook_types ⇒ Object
Returns a list of supported hook types (pre-commit, commit-msg, etc.).
-
.with_environment(env) ⇒ Object
Calls a block of code with a modified set of environment variables, restoring them once the code has executed.
Class Attribute Details
.log ⇒ Overcommit::Logger
Returns logger with which to send debug output.
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# File 'lib/overcommit/utils.rb', line 30 def log @log end |
Class Method Details
.broken_symlink?(file) ⇒ true, false
Returns whether a file is a broken symlink.
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# File 'lib/overcommit/utils.rb', line 268 def broken_symlink?(file) # JRuby's implementation of File.exist? returns true for broken # symlinks, so we need use File.size? Overcommit::Utils::FileUtils.symlink?(file) && File.size?(file).nil? end |
.camel_case(str) ⇒ Object
Converts a string containing underscores/hyphens/spaces into CamelCase.
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# File 'lib/overcommit/utils.rb', line 102 def camel_case(str) str.split(/_|-| /).map { |part| part.sub(/^\w/, &:upcase) }.join end |
.convert_glob_to_absolute(glob) ⇒ String
Convert a glob pattern to an absolute path glob pattern rooted from the repository root directory.
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# File 'lib/overcommit/utils.rb', line 279 def convert_glob_to_absolute(glob) File.join(repo_root, glob) end |
.execute(initial_args, options = {}) ⇒ Overcommit::Subprocess::Result
Execute a command in a subprocess, capturing exit status and output from both standard and error streams.
This is intended to provide a centralized place to perform any checks or filtering of the command before executing it.
The ‘args` option provides a convenient way of splitting up long argument lists which would otherwise exceed the maximum command line length of the OS. It will break up the list into chunks and run the command with the same prefix `initial_args`, finally combining the output together at the end.
This requires that the external command you are running can have its work split up in this way and still produce the same resultant output when outputs of the individual commands are concatenated back together.
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# File 'lib/overcommit/utils.rb', line 175 def execute(initial_args, = {}) if initial_args.include?('|') raise Overcommit::Exceptions::InvalidCommandArgs, 'Cannot pipe commands with the `execute` helper' end result = if (splittable_args = .fetch(:args, [])).any? debug(initial_args.join(' ') + " ... (#{splittable_args.length} splittable args)") Overcommit::CommandSplitter.execute(initial_args, ) else debug(initial_args.join(' ')) Overcommit::Subprocess.spawn(initial_args, ) end debug("EXIT STATUS: #{result.status}") debug("STDOUT: #{result.stdout.inspect}") debug("STDERR: #{result.stderr.inspect}") result end |
.execute_in_background(args) ⇒ ChildProcess
Execute a command in a subprocess, returning immediately.
This provides a convenient way to execute long-running processes for which we do not need to know the result.
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# File 'lib/overcommit/utils.rb', line 204 def execute_in_background(args) if args.include?('|') raise Overcommit::Exceptions::InvalidCommandArgs, 'Cannot pipe commands with the `execute_in_background` helper' end debug("Spawning background task: #{args.join(' ')}") Subprocess.spawn_detached(args) end |
.git_dir(repo_dir = repo_root) ⇒ String
Returns an absolute path to the .git directory for a repo.
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# File 'lib/overcommit/utils.rb', line 62 def git_dir(repo_dir = repo_root) @git_dir ||= begin git_dir = File.('.git', repo_dir) # .git could also be a file that contains the location of the git directory unless File.directory?(git_dir) git_dir = File.read(git_dir)[/^gitdir: (.*)$/, 1] # Resolve relative paths unless git_dir.start_with?('/') git_dir = File.(git_dir, repo_dir) end end git_dir end end |
.in_path?(cmd) ⇒ true, false
Returns whether a command can be found given the current environment path.
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# File 'lib/overcommit/utils.rb', line 124 def in_path?(cmd) # ENV['PATH'] doesn't include the repo root, but that is a valid # location for executables, so we want to add it to the list of places # we are checking for the executable. paths = [repo_root] + ENV['PATH'].split(File::PATH_SEPARATOR) exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : [''] paths.each do |path| exts.each do |ext| cmd_with_ext = cmd.upcase.end_with?(ext.upcase) ? cmd : "#{cmd}#{ext}" full_path = File.join(path, cmd_with_ext) return true if File.executable?(full_path) end end false end |
.matches_path?(pattern, path) ⇒ Boolean
Return whether a pattern matches the given path.
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# File 'lib/overcommit/utils.rb', line 287 def matches_path?(pattern, path) File.fnmatch?( pattern, path, File::FNM_PATHNAME | # Wildcard doesn't match separator File::FNM_DOTMATCH # Wildcards match dotfiles ) end |
.parent_command ⇒ Object
Return the parent command that triggered this hook run
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# File 'lib/overcommit/utils.rb', line 141 def parent_command if OS.windows? `wmic process where ProcessId=#{Process.ppid} get CommandLine /FORMAT:VALUE`. strip. slice(/(?<=CommandLine=).+/) elsif OS.cygwin? # Cygwin's `ps` command behaves differently than the traditional # Linux version, but a comparable `procps` is provided to compensate. `procps -ocommand= -p #{Process.ppid}`.chomp else `ps -ocommand= -p #{Process.ppid}`.chomp end end |
.processor_count ⇒ Object
Return the number of processors used by the OS for process scheduling.
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# File 'lib/overcommit/utils.rb', line 217 def processor_count # rubocop:disable all @processor_count ||= begin if Overcommit::OS.windows? require 'win32ole' result = WIN32OLE.connect('winmgmts://').ExecQuery( 'select NumberOfLogicalProcessors from Win32_Processor' ) result.to_enum.collect(&:NumberOfLogicalProcessors).reduce(:+) elsif File.readable?('/proc/cpuinfo') IO.read('/proc/cpuinfo').scan(/^processor/).size elsif File.executable?('/usr/bin/hwprefs') IO.popen('/usr/bin/hwprefs thread_count').read.to_i elsif File.executable?('/usr/sbin/psrinfo') IO.popen('/usr/sbin/psrinfo').read.scan(/^.*on-*line/).size elsif File.executable?('/usr/sbin/ioscan') IO.popen('/usr/sbin/ioscan -kC processor') do |out| out.read.scan(/^.*processor/).size end elsif File.executable?('/usr/sbin/pmcycles') IO.popen('/usr/sbin/pmcycles -m').read.count("\n") elsif File.executable?('/usr/sbin/lsdev') IO.popen('/usr/sbin/lsdev -Cc processor -S 1').read.count("\n") elsif File.executable?('/usr/sbin/sysctl') IO.popen('/usr/sbin/sysctl -n hw.ncpu').read.to_i elsif File.executable?('/sbin/sysctl') IO.popen('/sbin/sysctl -n hw.ncpu').read.to_i else # Unknown platform; assume 1 processor 1 end end end |
.repo_root ⇒ String
Returns an absolute path to the root of the repository.
We do this ourselves rather than call ‘git rev-parse –show-toplevel` to solve an issue where the .git directory might not actually be valid in tests.
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# File 'lib/overcommit/utils.rb', line 43 def repo_root @repo_root ||= begin git_dir = Pathname.new(File.('.')).enum_for(:ascend).find do |path| File.exist?(File.join(path, '.git')) end unless git_dir raise Overcommit::Exceptions::InvalidGitRepo, 'no .git directory found' end git_dir.to_s end end |
.script_path(script) ⇒ Object
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# File 'lib/overcommit/utils.rb', line 32 def script_path(script) File.join(Overcommit::HOME, 'libexec', script) end |
.snake_case(str) ⇒ Object
Shamelessly stolen from: stackoverflow.com/questions/1509915/converting-camel-case-to-underscore-case-in-ruby
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# File 'lib/overcommit/utils.rb', line 93 def snake_case(str) str.gsub(/::/, '/'). gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2'). gsub(/([a-z\d])([A-Z])/, '\1_\2'). tr('-', '_'). downcase end |
.strip_color_codes(text) ⇒ String
Remove ANSI escape sequences from a string.
This is useful for stripping colorized output from external tools.
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# File 'lib/overcommit/utils.rb', line 87 def strip_color_codes(text) text.gsub(/\e\[(\d+)(;\d+)*m/, '') end |
.supported_hook_type_classes ⇒ Object
Returns a list of supported hook classes (PreCommit, CommitMsg, etc.)
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# File 'lib/overcommit/utils.rb', line 115 def supported_hook_type_classes supported_hook_types.map do |file| file.split('-').map(&:capitalize).join end end |
.supported_hook_types ⇒ Object
Returns a list of supported hook types (pre-commit, commit-msg, etc.)
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# File 'lib/overcommit/utils.rb', line 107 def supported_hook_types Dir[File.join(HOOK_DIRECTORY, '*')]. select { |file| File.directory?(file) }. reject { |file| File.basename(file) == 'shared' }. map { |file| File.basename(file).tr('_', '-') } end |
.with_environment(env) ⇒ Object
Calls a block of code with a modified set of environment variables, restoring them once the code has executed.
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# File 'lib/overcommit/utils.rb', line 253 def with_environment(env) old_env = {} env.each do |var, value| old_env[var] = ENV[var.to_s] ENV[var.to_s] = value end yield ensure old_env.each { |var, value| ENV[var.to_s] = value } end |