Class: GitStore::Diff

Inherits:
Object
  • Object
show all
Defined in:
lib/git_store/diff.rb

Overview

adapted from Grit

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(store, a_path, b_path, a_blob, b_blob, a_mode, b_mode, new_file, deleted_file, diff) ⇒ Diff

Returns a new instance of Diff.



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# File 'lib/git_store/diff.rb', line 12

def initialize(store, a_path, b_path, a_blob, b_blob, a_mode, b_mode, new_file, deleted_file, diff)
  @store = store
  @a_path = a_path
  @b_path = b_path
  @a_blob = a_blob =~ /^0{40}$/ ? nil : store.get(a_blob)
  @b_blob = b_blob =~ /^0{40}$/ ? nil : store.get(b_blob)
  @a_mode = a_mode
  @b_mode = b_mode
  @new_file = new_file
  @deleted_file = deleted_file
  @diff = diff
end

Instance Attribute Details

#a_blob ⇒ Object (readonly)

Returns the value of attribute a_blob.



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# File 'lib/git_store/diff.rb', line 7

def a_blob
  @a_blob
end

#a_mode ⇒ Object (readonly)

Returns the value of attribute a_mode.



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# File 'lib/git_store/diff.rb', line 8

def a_mode
  @a_mode
end

#a_path ⇒ Object (readonly)

Returns the value of attribute a_path.



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# File 'lib/git_store/diff.rb', line 6

def a_path
  @a_path
end

#b_blob ⇒ Object (readonly)

Returns the value of attribute b_blob.



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# File 'lib/git_store/diff.rb', line 7

def b_blob
  @b_blob
end

#b_mode ⇒ Object (readonly)

Returns the value of attribute b_mode.



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# File 'lib/git_store/diff.rb', line 8

def b_mode
  @b_mode
end

#b_path ⇒ Object (readonly)

Returns the value of attribute b_path.



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# File 'lib/git_store/diff.rb', line 6

def b_path
  @b_path
end

#deleted_file ⇒ Object (readonly)

Returns the value of attribute deleted_file.



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# File 'lib/git_store/diff.rb', line 9

def deleted_file
  @deleted_file
end

#diff ⇒ Object (readonly)

Returns the value of attribute diff.



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# File 'lib/git_store/diff.rb', line 10

def diff
  @diff
end

#new_file ⇒ Object (readonly)

Returns the value of attribute new_file.



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# File 'lib/git_store/diff.rb', line 9

def new_file
  @new_file
end

#store ⇒ Object (readonly)

Returns the value of attribute store.



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# File 'lib/git_store/diff.rb', line 5

def store
  @store
end

Class Method Details

.exec(store, cmd) ⇒ Object 



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# File 'lib/git_store/diff.rb', line 25

def self.exec(store, cmd)
  list(store, IO.popen(cmd) { |io| io.read })
end

.list(store, text) ⇒ Object 



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# File 'lib/git_store/diff.rb', line 29

def self.list(store, text)
  lines = text.split("\n")

  diffs = []

  while !lines.empty?
    m, a_path, b_path = *lines.shift.match(%r{^diff --git a/(.+?) b/(.+)$})

    if lines.first =~ /^old mode/
      m, a_mode = *lines.shift.match(/^old mode (\d+)/)
      m, b_mode = *lines.shift.match(/^new mode (\d+)/)
    end

    if lines.empty? || lines.first =~ /^diff --git/
      diffs << Diff.new(store, a_path, b_path, nil, nil, a_mode, b_mode, false, false, nil)
      next
    end

    new_file = false
    deleted_file = false

    if lines.first =~ /^new file/
      m, b_mode = lines.shift.match(/^new file mode (.+)$/)
      a_mode = nil
      new_file = true
    elsif lines.first =~ /^deleted file/
      m, a_mode = lines.shift.match(/^deleted file mode (.+)$/)
      b_mode = nil
      deleted_file = true
    end

    m, a_blob, b_blob, b_mode = *lines.shift.match(%r{^index ([0-9A-Fa-f]+)\.\.([0-9A-Fa-f]+) ?(.+)?$})
    b_mode.strip! if b_mode

    diff_lines = []
    while lines.first && lines.first !~ /^diff/
      diff_lines << lines.shift
    end
    diff = diff_lines.join("\n")

    diffs << Diff.new(store, a_path, b_path, a_blob, b_blob, a_mode, b_mode, new_file, deleted_file, diff)
  end

  diffs
end