Class: Index::Entry

Inherits:
Struct
  • Object
show all
Defined in:
lib/index/entry.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.create(pathname, oid, stat) ⇒ Object 



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# File 'lib/index/entry.rb', line 20

def self.create(pathname, oid, stat)
  path  = pathname.to_s
  mode  = Entry.mode_for_stat(stat)
  flags = [path.bytesize, MAX_PATH_SIZE].min

  Entry.new(
    stat.ctime.to_i, stat.ctime.nsec,
    stat.mtime.to_i, stat.mtime.nsec,
    stat.dev, stat.ino, mode, stat.uid, stat.gid, stat.size,
    oid, flags, path)
end

.create_from_db(pathname, item, n) ⇒ Object 



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# File 'lib/index/entry.rb', line 32

def self.create_from_db(pathname, item, n)
  path  = pathname.to_s
  flags = (n << 12) | [path.bytesize, MAX_PATH_SIZE].min

  Entry.new(0, 0, 0, 0, 0, 0, item.mode, 0, 0, 0, item.oid, flags, path)
end

.mode_for_stat(stat) ⇒ Object 



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# File 'lib/index/entry.rb', line 39

def self.mode_for_stat(stat)
  stat.executable? ? EXECUTABLE_MODE : REGULAR_MODE
end

.parse(data) ⇒ Object 



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# File 'lib/index/entry.rb', line 43

def self.parse(data)
  Entry.new(*data.unpack(ENTRY_FORMAT))
end

Instance Method Details

#basename ⇒ Object 



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# File 'lib/index/entry.rb', line 59

def basename
  Pathname.new(path).basename
end

#key ⇒ Object 



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# File 'lib/index/entry.rb', line 47

def key
  [path, stage]
end

#parent_directories ⇒ Object 



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# File 'lib/index/entry.rb', line 55

def parent_directories
  Pathname.new(path).descend.to_a[0..-2]
end

#stage ⇒ Object 



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# File 'lib/index/entry.rb', line 51

def stage
  (flags >> 12) & 0x3
end

#stat_match?(stat) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/index/entry.rb', line 76

def stat_match?(stat)
  mode == Entry.mode_for_stat(stat) and (size == 0 or size == stat.size)
end

#times_match?(stat) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/index/entry.rb', line 80

def times_match?(stat)
  ctime == stat.ctime.to_i and ctime_nsec == stat.ctime.nsec and
  mtime == stat.mtime.to_i and mtime_nsec == stat.mtime.nsec
end

#to_s ⇒ Object 



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# File 'lib/index/entry.rb', line 85

def to_s
  string = to_a.pack(ENTRY_FORMAT)
  string.concat("\0") until string.bytesize % ENTRY_BLOCK == 0
  string
end

#update_stat(stat) ⇒ Object 



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# File 'lib/index/entry.rb', line 63

def update_stat(stat)
  self.ctime      = stat.ctime.to_i
  self.ctime_nsec = stat.ctime.nsec
  self.mtime      = stat.mtime.to_i
  self.mtime_nsec = stat.mtime.nsec
  self.dev        = stat.dev
  self.ino        = stat.ino
  self.mode       = Entry.mode_for_stat(stat)
  self.uid        = stat.uid
  self.gid        = stat.gid
  self.size       = stat.size
end