Class: Composer::Package::LinkConstraint::VersionConstraint

Inherits:
SpecificConstraint show all
Defined in:
lib/composer/package/link_constraint/version_constraint.rb

Constant Summary collapse

@@cache = 
nil

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from SpecificConstraint

#matches, #pretty_string, #pretty_string=

Methods inherited from BaseConstraint

#matches, #pretty_string, #pretty_string=

Constructor Details

#initialize(operator, version) ⇒ VersionConstraint

Sets operator and version to compare a package with

Parameters:

  • string —

    $operator A comparison operator

  • string —

    $version A version to compare to



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# File 'lib/composer/package/link_constraint/version_constraint.rb', line 23

def initialize(operator, version)
    if operator === '='
      operator = '=='
    end

    if operator === '<>'
      operator = '!='
    end

    @operator = operator
    @version = version
end

Instance Attribute Details

#operator ⇒ Object (readonly)

Returns the value of attribute operator.



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# File 'lib/composer/package/link_constraint/version_constraint.rb', line 16

def operator
  @operator
end

#version ⇒ Object (readonly)

Returns the value of attribute version.



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# File 'lib/composer/package/link_constraint/version_constraint.rb', line 16

def version
  @version
end

Instance Method Details

#match_specific(provider, compare_branches = false) ⇒ Object

Returns bool.

Parameters:

  • VersionConstraint —

    provider

  • bool —

    compare_branches

Returns:

  • bool



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# File 'lib/composer/package/link_constraint/version_constraint.rb', line 160

def match_specific(provider, compare_branches = false)
  @@cache = {} unless @@cache
  @@cache[@operator] = {} unless @@cache.key?(@operator)
  @@cache[@operator][@version] = {} unless @@cache[@operator].key?(@version)
  @@cache[@operator][@version][provider.operator] = {} unless @@cache[@operator][@version].key?(provider.operator)
  @@cache[@operator][@version][provider.operator][provider.version] = {} unless @@cache[@operator][@version][provider.operator].key?(provider.version)

  if @@cache[@operator][@version][provider.operator][provider.version].key?(compare_branches)
    return @@cache[@operator][@version][provider.operator][provider.version][compare_branches]
  end

  (@@cache[@operator][@version][provider.operator][provider.version][compare_branches] = do_match_specific(provider, compare_branches))
end

#to_s ⇒ Object 



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# File 'lib/composer/package/link_constraint/version_constraint.rb', line 174

def to_s
  "#{@operator} #{@version}"
end

#version_compare(a, b, operator, compare_branches = false) ⇒ Object 



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# File 'lib/composer/package/link_constraint/version_constraint.rb', line 36

def version_compare(a, b, operator, compare_branches = false)

  a_is_branch = 'dev-' === a[0...4]
  b_is_branch = 'dev-' === b[0...4]
  if a_is_branch && b_is_branch
    return operator == '==' && a === b
  end

  # when branches are not comparable, we make sure dev branches never match anything
  if !compare_branches && (a_is_branch || b_is_branch)
    return false
  end

  # Standardise versions
  ver_a = a.strip.gsub(/([\-?\_?\+?])/, '.').gsub(/([^0-9\.]+)/, '.$1.').gsub(/\.\./, '.').split('.')
  ver_b = b.strip.gsub(/([\-?\_?\+?])/, '.').gsub(/([^0-9\.]+)/, '.$1.').gsub(/\.\./, '.').split('.')

  # Replace empty entries at the start of the array
  while ver_a[0] && ver_a[0].empty?
    ver_a.shift
  end
  while ver_b[0] && ver_b[0].empty?
    ver_b.shift
  end

  # Release state order
  # '#' stands for any number
  versions = {
    'dev'   => 0,
    'alpha' => 1,
    'a'     => 1,
    'beta'  => 2,
    'b'     => 2,
    'RC'    => 3,
    '#'     => 4,
    'p'     => 5,
    'pl'    => 5
  }

  # Loop through each segment in the version string
  compare = 0
  for i in 0..([ver_a.length, ver_b.length].min - 1)
  # for (i = 0, $x = [ver_a.length, ver_b.length].min; i < $x; i++) {

    next if ver_a[i] == ver_b[i]

    i1 = ver_a[i]
    i2 = ver_b[i]

    i1_is_numeric = true if Float(i1) rescue false
    i2_is_numeric = true if Float(i2) rescue false

    if i1_is_numeric && i2_is_numeric
      compare = (i1 < i2) ? -1 : 1
      break
    end

    # We use the position of '#' in the versions list
    # for numbers... (so take care of # in original string)
    if i1 == '#'
        i1 = ''
    elsif i1_is_numeric
      i1 = '#';
    end

    if i2 == '#'
      i2 = ''
    elsif i2_is_numeric
      i2 = '#'
    end

    if !versions[i1].nil? && versions[i2].nil?
      compare = versions[i1] < versions[i2] ? -1 : 1
    elsif !versions[i1].nil?
      compare = 1;
    elsif !versions[i2].nil?
      compare = -1;
    else
      compare = 0;
    end

    break;

  end

  # If previous loop didn't find anything, compare the "extra" segments
  if compare == 0
    if ver_b.length > ver_a.length
      if !ver_b[i].nil && !versions[ver_b[i]].nil
        compare = (versions[ver_b[i]] < 4) ? 1 : -1;
      else
        compare = -1;
      end
    elsif ver_b.length < ver_a.length
      if !ver_a[i].nil && !versions[ver_a[i]].nil
        compare = (versions[ver_a[i]] < 4) ? -1 : 1;
      else
        compare = 1;
      end
    end
  end

  # Compare the versions
  case operator
  when '>', 'gt'
    return compare > 0
  when '>=', 'ge'
    return compare >= 0
  when '<=', 'le'
    return compare <= 0
  when '==', '=', 'eq'
    return compare == 0
  when '<>', '!=', 'ne'
    return compare != 0
  when '', '<', 'lt'
    return compare < 0
  end

  false
end