Class: CommandT::Scanner::FileScanner::FindFileScanner

Inherits:
CommandT::Scanner::FileScanner show all
Includes:
PathUtilities
Defined in:
lib/command-t/scanner/file_scanner/find_file_scanner.rb

Overview

A FileScanner which shells out to the ‘find` executable in order to scan.

Direct Known Subclasses

GitFileScanner, WatchmanFileScanner

Constant Summary

Constants inherited from CommandT::Scanner::FileScanner

FileLimitExceeded

Instance Attribute Summary

Attributes inherited from CommandT::Scanner::FileScanner

#path

Instance Method Summary collapse

Methods inherited from CommandT::Scanner::FileScanner

#flush, #initialize, #paths

Methods inherited from CommandT::Scanner

#paths

Constructor Details

This class inherits a constructor from CommandT::Scanner::FileScanner

Instance Method Details

#paths! ⇒ Object 



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# File 'lib/command-t/scanner/file_scanner/find_file_scanner.rb', line 13

def paths!
  # temporarily set field separator to NUL byte; this setting is
  # respected by both `each_line` and `chomp!` below, and makes it easier
  # to parse the output of `find -print0`
  separator = $/
  $/ = "\x00"

  unless @scan_dot_directories
    dot_directory_filter = [
      '-not', '-path', "#{@path}/.*/*",           # top-level dot dir
      '-and', '-not', '-path', "#{@path}/*/.*/*"  # lower-level dot dir
    ]
  end

  paths = []
  Open3.popen3(*([
    'find', '-L',                 # follow symlinks
    @path,                        # anchor search here
    '-maxdepth', @max_depth.to_s, # limit depth of DFS
    '-type', 'f',                 # only show regular files (not dirs etc)
    dot_directory_filter,         # possibly skip out dot directories
    '-print0'                     # NUL-terminate results
  ].flatten.compact)) do |stdin, stdout, stderr|
    counter = 1
    next_progress = progress_reporter.update(counter)
    stdout.each_line do |line|
      next if path_excluded?(line.chomp!)
      paths << line[@prefix_len..-1]
      next_progress = progress_reporter.update(counter) if counter == next_progress
      if (counter += 1) > @max_files
        show_max_files_warning
        break
      end
    end
  end
  paths
ensure
  $/ = separator
end