[gentoo-commits] gentoolkit r831 - in trunk/gentoolkit: . bin pym/gentoolkit pym/gentoolkit/eshowkw

[Tomas Chvatal (scarabeus)]

Author: scarabeus
Date: 2010-10-28 20:13:51 +0000 (Thu, 28 Oct 2010)
New Revision: 831

Added:
   trunk/gentoolkit/bin/eshowkw
   trunk/gentoolkit/pym/gentoolkit/eshowkw/
   trunk/gentoolkit/pym/gentoolkit/eshowkw/__init__.py
   trunk/gentoolkit/pym/gentoolkit/eshowkw/display_pretty.py
   trunk/gentoolkit/pym/gentoolkit/eshowkw/keywords_content.py
   trunk/gentoolkit/pym/gentoolkit/eshowkw/keywords_header.py
Modified:
   trunk/gentoolkit/ChangeLog
Log:
Initial commit of eshowkw, which is drop-in replacement for eshowkw from gentoolkit-dev.

Modified: trunk/gentoolkit/ChangeLog
===================================================================
--- trunk/gentoolkit/ChangeLog	2010-10-28 20:09:53 UTC (rev 830)
+++ trunk/gentoolkit/ChangeLog	2010-10-28 20:13:51 UTC (rev 831)
@@ -1,3 +1,7 @@
[phone]: Tomáš Chvátal <scarabeus@g.o>
+	* eshowkw: Add new module as drop-in replacement for eshowkw from
+	gentoolkit-dev
+
 2010-05-13: Christian Ruppert <idl0r@g.o>
 	* eclean/cli.py: Fix typo, bug 319349, thanks to Ulrich Müller
 	<ulm@g.o>.

Added: trunk/gentoolkit/bin/eshowkw
===================================================================
--- trunk/gentoolkit/bin/eshowkw	                        (rev 0)
+++ trunk/gentoolkit/bin/eshowkw	2010-10-28 20:13:51 UTC (rev 831)
@@ -0,0 +1,9 @@
+#!/usr/bin/python
+#	vim:fileencoding=utf-8
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+import sys
+from eshowkw import main as emain
+
+emain(sys.argv)
\ No newline at end of file

Added: trunk/gentoolkit/pym/gentoolkit/eshowkw/__init__.py
===================================================================
--- trunk/gentoolkit/pym/gentoolkit/eshowkw/__init__.py	                        (rev 0)
+++ trunk/gentoolkit/pym/gentoolkit/eshowkw/__init__.py	2010-10-28 20:13:51 UTC (rev 831)
@@ -0,0 +1,124 @@
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+__package__ = 'eshowkw'
+__version__ = '0.5'
+
+import portage
+
+import sys, os, fnmatch
+import argparse
+from portage import output as porto
+from portage import settings as ports
+from portage import config as portc
+from portage import portdbapi as portdbapi
+from portage import db as portdb
+
+from keywords_header import keywords_header
+from keywords_content import keywords_content
+from display_pretty import string_rotator
+from display_pretty import display
+
+ignore_slots = False
+bold = False
+order = 'bottom'
+topper = 'versionlist'
+
+def process_display(package, keywords, dbapi):
+	portdata = keywords_content(package, keywords.keywords, dbapi, ignore_slots, order, bold, topper)
+	if topper == 'archlist':
+		header = string_rotator().rotateContent(keywords.content, keywords.length, bold)
+		extra = string_rotator().rotateContent(keywords.extra, keywords.length, bold, False)
+		# -1 : space is taken in account and appended by us
+		filler = ''.ljust(portdata.slot_length-1)
+		header = ['%s%s%s' % (x, filler, y) for x, y in zip(header, extra)]
+		content = portdata.content
+		header_length = portdata.version_length
+		content_length = keywords.length
+	else:
+		header = string_rotator().rotateContent(portdata.content, portdata.content_length, order, bold)
+		content = keywords.content
+		sep = [''.ljust(keywords.length) for x in range(portdata.slot_length-1)]
+		content.extend(sep)
+		content.extend(keywords.extra)
+		header_length = keywords.length
+		content_length = portdata.version_length
+	display(content, header, header_length, content_length, portdata.cp, topper)
+
+def process_args(argv):
+	"""Option parsing via argc"""
+	parser = argparse.ArgumentParser(prog=__package__,
+		formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+		description='Display keywords for specified package or for package that is in pwd.')
+
+	parser.add_argument('-v', '--version', action='version', version=__version__, help='show package version and exit')
+
+	parser.add_argument('package', nargs='*', default=None, help='Packages to check.')
+
+	parser.add_argument('-a', '--arch', nargs='+', default=[], help='Display only specified arch(s)')
+
+	parser.add_argument('-A', '--align', nargs='?', default='bottom', choices=['top', 'bottom'],
+		help='Specify alignment for descriptions.')
+	parser.add_argument('-T', '--top-position', nargs='?', default='archlist', choices=['archlist', 'versionlist'],
+		help='Specify which fields we want to have in top listing.')
+
+	parser.add_argument('-B', '--bold', action='store_true', default=False,
+		help='Print out each other column in bold for easier visual separation.')
+	parser.add_argument('-C', '--color', action='store_true', default=False,
+		help='Force colored output')
+	parser.add_argument('-O', '--overlays', action='store_true', default=False,
+		help='Search also overlays')
+	parser.add_argument('-P', '--prefix', action='store_true', default=False,
+		help='Display prefix keywords in output.')
+	parser.add_argument('-S', '--ignore-slot', action='store_true', default=False,
+		help='Treat slots as irelevant during detection of redundant pacakges.')
+
+	return parser.parse_args(args=argv[1:])
+
+def main(argv):
+	global ignore_slots, bold, order, topper
+
+	#opts parsing
+	opts = process_args(argv)
+	ignore_slots = opts.ignore_slot
+	use_overlays = opts.overlays
+	# user can do both --arch=a,b,c or --arch a b c
+	if len(opts.arch) > 1:
+		opts.arch = ','.join(opts.arch)
+	highlight_arch = ''.join(opts.arch).split(',')
+	bold = opts.bold
+	order = opts.align
+	topper = opts.top_position
+	prefix = opts.prefix
+	color = opts.color
+	package = opts.package
+	# disable colors when redirected and they are not forced on
+	if not color and not sys.stdout.isatty():
+		# disable colors
+		porto.nocolor()
+	keywords = keywords_header(prefix, highlight_arch, order)
+	if len(package) > 0:
+		dbapi = portdb[ports['ROOT']]['porttree'].dbapi
+		if not use_overlays:
+			dbapi.porttrees = [dbapi.porttree_root]
+		map(lambda x: process_display(x, keywords, dbapi), package)
+	else:
+		currdir = os.getcwd()
+		package=os.path.basename(currdir)
+		# check if there are actualy some ebuilds
+		ebuilds = ['%s' % x for x in os.listdir(currdir)
+			if fnmatch.fnmatch(file, '*.ebuild')]
+		if len(ebuilds) <= 0:
+			msg_err = 'No ebuilds at "%s"' % currdir
+			raise SystemExit(msg_err)
+		ourtree = os.path.abspath('../../')
+
+		mysettings = portc(env={'PORTDIR_OVERLAY': os.path.abspath('../../')})
+		dbapi = portdbapi(mysettings=mysettings)
+		# specify that we want just our nice tree we are in cwd
+		dbapi.porttrees = [ourtree]
+		process_display(package, keywords, dbapi)
+	return 0
+
+if __name__ == '__main__':
+	sys.exit(main(sys.argv))

Added: trunk/gentoolkit/pym/gentoolkit/eshowkw/display_pretty.py
===================================================================
--- trunk/gentoolkit/pym/gentoolkit/eshowkw/display_pretty.py	                        (rev 0)
+++ trunk/gentoolkit/pym/gentoolkit/eshowkw/display_pretty.py	2010-10-28 20:13:51 UTC (rev 831)
@@ -0,0 +1,102 @@
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+from portage.output import colorize
+from itertools import izip_longest
+
+__all__ = ['string_rotator', 'colorize_string', 'align_string', 'rotate_dash', 'print_content', 'display']
+
+def display(plain_list, rotated_list, plain_width, rotated_height, cp, toplist = 'archlist'):
+	"""Render defauld display to show the keywords listing"""
+	# header
+	output = []
+	output.append('Keywords for %s:' % colorize('blue', cp))
+	# data
+	corner_image = [''.ljust(plain_width) for x in range(rotated_height)]
+	if toplist == 'versionlist':
+		corner_image.extend(plain_list)
+	data_printout = ['%s%s' % (x, y)
+		for x, y in izip_longest(corner_image, rotated_list, fillvalue=corner_image[0])]
+	if toplist == 'archlist':
+		data_printout.extend(plain_list)
+	output.extend(data_printout)
+	print print_content(output)
+
+def align_string(string, align, length):
+	"""Align string to the specified alignment (left or right, and after rotation it becames top and bottom)"""
+	if align == 'top' or align == 'left':
+		string = string.ljust(length)
+	else:
+		string = string.rjust(length)
+	return string
+
+def colorize_string(color, string):
+	"""Add coloring for specified string. Due to rotation we need to do that per character rather than per-line"""
+	tmp = []
+	for char in list(string):
+		# % is whitespace separator so we wont color that :)
+		if char != '%':
+			tmp.append(colorize(color, char))
+		else:
+			tmp.append(char)
+	return ''.join(tmp)
+
+def rotate_dash(string):
+	"""Rotate special strings over 90 degrees for better readability."""
+	chars = ['-', '|']
+	subs = ['|', '-']
+	out = string
+	for x,y  in zip(chars, subs):
+		if string.find(x) != -1:
+			out = out.replace(x, y)
+	return out
+
+def print_content(content):
+	"""Print out content (strip it out of the temporary %)"""
+	return '\n'.join(content).replace('%','')
+
+class string_rotator:
+	__DASH_COUNT = 0
+	def __getChar(self, string, position, line, bold_separator = False):
+		"""Return specified character from the string position"""
+
+		# first figure out what character we want to work with
+		# based on order and position in the string
+		isdash = False
+		if string.startswith('|') or string.startswith('-') or string.startswith('+'):
+			split = list(string)
+			isdash = True
+			self.__DASH_COUNT += 1
+		else:
+			split = string.split('%')
+		char = split[position]
+		# bolding
+		if not isdash and bold_separator \
+				and (line-self.__DASH_COUNT)%2 == 0 \
+				and char != ' ':
+			char = colorize('bold', char)
+		return char
+
+	def rotateContent(self, elements, length, bold_separator = False, strip = True):
+		"""
+			Rotate string over 90 degrees:
+			string -> s
+						t
+						r
+						i
+						n
+						g
+		"""
+		# join used to have list of lines rather than list of chars
+		tmp = []
+		for position in range(length):
+			x = ''
+			for i, string in enumerate(elements):
+				x += ' ' + self.__getChar(rotate_dash(string), position, i, bold_separator)
+			# spaces on dashed line should be dashed too
+			if x.find('+ -') != -1:
+				x = x.replace(' ', '-')
+			# strip all chars and remove empty lines
+			if not strip or len(x.strip(' |-')) > 0:
+				tmp.append(x)
+		return tmp

Added: trunk/gentoolkit/pym/gentoolkit/eshowkw/keywords_content.py
===================================================================
--- trunk/gentoolkit/pym/gentoolkit/eshowkw/keywords_content.py	                        (rev 0)
+++ trunk/gentoolkit/pym/gentoolkit/eshowkw/keywords_content.py	2010-10-28 20:13:51 UTC (rev 831)
@@ -0,0 +1,290 @@
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+import portage as port
+from portage.output import colorize
+
+__all__ = ['keywords_content']
+
+from display_pretty import colorize_string
+from display_pretty import align_string
+
+class keywords_content:
+	class RedundancyChecker:
+		def __listRedundant(self, keywords, ignoreslots, slots):
+			"""List all redundant packages."""
+			if ignoreslots:
+				return self.__listRedundantAll(keywords)
+			else:
+				return self.__listRedundantSlots(keywords, slots)
+
+		def __listRedundantSlots(self, keywords, slots):
+			"""Search for redundant packages walking per keywords for specified slot."""
+			result = [self.__compareSelected([k for k, s in zip(keywords, slots)
+				if s == slot])
+					for slot in self.__uniq(slots)]
+			# this is required because the list itself is not just one level depth
+			return list(''.join(result))
+
+		def __uniq(self, seq):
+			"""Remove all duplicate elements from list."""
+			seen = {}
+			result = []
+			for item in seq:
+				if item in seen:
+					continue
+				seen[item] = 1
+				result.append(item)
+			return result
+
+		def __listRedundantAll(self, keywords):
+			"""Search for redundant packages using all versions ignoring its slotting."""
+			return list(self.__compareSelected(list(keywords)))
+
+		def __compareSelected(self, kws):
+			"""
+			Rotate over list of keywords and compare each element with others.
+			Selectively remove each already compared list from the remaining keywords.
+			"""
+			result = []
+			kws.reverse()
+			for i in range(len(kws)):
+				kw = kws.pop()
+				if self.__compareKeywordWithRest(kw, kws):
+					result.append('#')
+				else:
+					result.append('o')
+			if len(result) == 0:
+				result.append('o')
+			return ''.join(result)
+
+		def __compareKeywordWithRest(self, keyword, keywords):
+			"""Compare keywords with list of keywords."""
+			for key in keywords:
+				if self.__checkShadow(keyword, key):
+					return True
+			return False
+
+		def __checkShadow(self, old, new):
+			"""Check if package version is overshadowed by other package version."""
+			# remove -* and -arch since they are useless for us
+			newclean = ["%s" % x for x in new.split()
+				if x != '-*' and not x.startswith('-')]
+			oldclean = ["%s" % x for x in old.split()
+				if x != '-*' and not x.startswith('-')]
+
+			tmp = set(newclean)
+			tmp.update("~%s" % x for x in newclean
+				if not x.startswith("~"))
+			if not set(oldclean).difference(tmp):
+				return True
+			else:
+				return False
+
+		def __init__(self, keywords, slots, ignore_slots = False):
+			"""Query all relevant data for redundancy package checking"""
+			self.redundant = self.__listRedundant(keywords, ignore_slots, slots)
+
+	class VersionChecker:
+		def __getVersions(self, packages, vartree):
+			"""Obtain properly aligned version strings without colors."""
+			return self.__stripStartingSpaces(map(lambda x: self.__separateVersion(x, vartree), packages))
+
+		def __stripStartingSpaces(self, pvs):
+			"""Strip starting whitespace if there is no real reason for it."""
+			if not self.__require_prepend:
+					return map(lambda x: x.lstrip(), pvs)
+			else:
+				return pvs
+
+		def __separateVersion(self, cpv, vartree):
+			"""Get version string for specfied cpv"""
+			#pv = port.versions.cpv_getversion(cpv)
+			return self.__prependVersionInfo(cpv, self.cpv_getversion(cpv), vartree)
+
+		# remove me when portage 2.1.9 is stable
+		def cpv_getversion(self, mycpv):
+			"""Returns the v (including revision) from an cpv."""
+			cp = port.versions.cpv_getkey(mycpv)
+			if cp is None:
+				return None
+			return mycpv[len(cp+"-"):]
+
+		def __prependVersionInfo(self, cpv, pv, vartree):
+			"""Prefix version with string based on whether version is installed or masked."""
+			mask = self.__getMaskStatus(cpv)
+			install = self.__getInstallStatus(cpv, vartree)
+
+			if mask and install:
+				pv = '[M][I]%s' % pv
+				self.__require_longprepend = True
+			elif mask:
+				pv = '[M]%s' % pv
+				self.__require_prepend = True
+			elif install:
+				pv = '[I]%s' % pv
+				self.__require_prepend = True
+			return pv
+
+		def __getMaskStatus(self, cpv):
+			"""
+			Figure out if package is pmasked.
+			This also uses user settings in /etc/ so local changes are important.
+			"""
+			pmask = False
+			try:
+				if port.getmaskingstatus(cpv) == ['package.mask']:
+					pmask = True
+			except:
+				# occurs when package is not known by portdb
+				# so we consider it unmasked
+				pass
+			return pmask
+
+		def __getInstallStatus(self, cpv, vartree):
+			"""Check if package version we test is installed."""
+			return vartree.cpv_exists(cpv)
+
+		def __init__(self, packages, vartree):
+			"""Query all relevant data for version data formatting"""
+			self.__require_longprepend = False
+			self.__require_prepend = False
+			self.versions = self.__getVersions(packages, vartree)
+
+	def __checkExist(self, pdb, package):
+		"""Check if specified package even exists."""
+		try:
+			matches = pdb.xmatch('match-all', package)
+		except port.exception.AmbiguousPackageName as Arg:
+			msg_err = 'Ambiguous package name "%s".\n' % package
+			found = 'Possibilities: %s' % Arg
+			raise SystemExit('%s%s' % (msg_err, found))
+		except port.exception.InvalidAtom:
+			msg_err = 'No such package "%s"' % package
+			raise SystemExit(msg_err)
+		if len(matches) <= 0:
+			msg_err = 'No such package "%s"' % package
+			raise SystemExit(msg_err)
+		return matches
+
+	def __getMetadata(self, pdb, packages):
+		"""Obtain all KEYWORDS and SLOT from metadata"""
+		try:
+			metadata = map(lambda x: pdb.aux_get(x, ['KEYWORDS', 'SLOT', 'repository']), packages)
+		except KeyError:
+			# portage prints out more verbose error for us if we were lucky
+			raise SystemExit('Failed to obtain metadata')
+		return list(zip(*metadata))
+
+	def __formatKeywords(self, keywords, keywords_list, usebold = False, toplist = 'archlist'):
+		"""Loop over all keywords and replace them with nice visual identifier"""
+		# the % is fancy separator, we use it to split keywords for rotation
+		# so we wont loose the empty spaces
+		return ['% %'.join([self.__prepareKeywordChar(arch, i, version.split(), usebold, toplist)
+			for i, arch in enumerate(keywords_list)])
+				for version in keywords]
+
+	def __prepareKeywordChar(self, arch, field, keywords, usebold = False, toplist = 'archlist'):
+		"""
+		Convert specified keywords for package into their visual replacements.
+		# possibilities:
+		# ~arch -> orange ~
+		# -arch -> red -
+		# arch -> green +
+		# -* -> red *
+		"""
+		keys = [ '~%s' % arch, '-%s' % arch, '%s' % arch, '-*' ]
+		nocolor_values = [ '~', '-', '+', '*' ]
+		values = [
+			colorize('darkyellow', '~'),
+			colorize('darkred', '-'),
+			colorize('darkgreen', '+'),
+			colorize('darkred', '*')
+		]
+		# check what keyword we have
+		# here we cant just append space because it would get stripped later
+		char = colorize('darkgray','o')
+		for k, v, n in zip(keys, values, nocolor_values):
+			if k in keywords:
+				char = v
+				break
+		if toplist == 'archlist' and usebold and (field)%2 == 0 and char != ' ':
+			char = colorize('bold', char)
+		return char
+
+	def __formatVersions(self, versions, align, length):
+		"""Append colors and align keywords properly"""
+		# % are used as separators for further split so we wont loose spaces and coloring
+		tmp = []
+		for pv in versions:
+			pv = align_string(pv, align, length)
+			pv = '%'.join(list(pv))
+			if pv.find('[%M%][%I%]') != -1:
+				tmp.append(colorize_string('darkyellow', pv))
+			elif pv.find('[%M%]') != -1:
+				tmp.append(colorize_string('darkred', pv))
+			elif pv.find('[%I%]') != -1:
+				tmp.append(colorize_string('bold', pv))
+			else:
+				tmp.append(pv)
+		return tmp
+
+	def __formatAdditional(self, additional, color, length):
+		"""Align additional items properly"""
+		# % are used as separators for further split so we wont loose spaces and coloring
+		tmp = []
+		for x in additional:
+			tmpc = color
+			x = align_string(x, 'left', length)
+			x = '%'.join(list(x))
+			if x == 'o':
+				# the value is unset so the color is gray
+				tmpc = 'darkgray'
+			x = colorize_string(tmpc, x)
+			tmp.append(x)
+		return tmp
+
+	def __prepareContentResult(self, versions, keywords, redundant, slots, slot_length, repos, linesep):
+		"""Parse version fields into one list with proper separators"""
+		content = []
+		oldslot = ''
+		fieldsep = '% %|% %'
+		normsep = '% %'
+		for v, k, r, s, t in zip(versions, keywords, redundant, slots, repos):
+			if oldslot != s:
+				oldslot = s
+				content.append(linesep)
+			else:
+				s = '%'.join(list(''.rjust(slot_length)))
+			content.append('%s%s%s%s%s%s%s%s%s' % (v, fieldsep, k, fieldsep, r, normsep, s, fieldsep, t))
+		return content
+
+	def __init__(self, package, keywords_list, porttree, ignoreslots = False, content_align = 'bottom', usebold = False, toplist = 'archlist'):
+		"""Query all relevant data from portage databases."""
+		vartree = port.db[port.settings['ROOT']]['vartree'].dbapi
+		packages = self.__checkExist(porttree, package)
+		self.keywords, self.slots, self.repositories = self.__getMetadata(porttree, packages)
+		self.slot_length = max([len(x) for x in self.slots])
+		repositories_length = max([len(x) for x in self.repositories])
+		self.keyword_length = len(keywords_list)
+		self.versions = self.VersionChecker(packages, vartree).versions
+		self.version_length = max([len(x) for x in self.versions])
+		self.version_count = len(self.versions)
+		self.redundant = self.RedundancyChecker(self.keywords, self.slots, ignoreslots).redundant
+		redundant_length = max([len(x) for x in self.redundant])
+
+		ver = self.__formatVersions(self.versions, content_align, self.version_length)
+		kws = self.__formatKeywords(self.keywords, keywords_list, usebold, toplist)
+		red = self.__formatAdditional(self.redundant, 'purple', redundant_length)
+		slt = self.__formatAdditional(self.slots, 'bold', self.slot_length)
+		rep = self.__formatAdditional(self.repositories, 'yellow', repositories_length)
+		# those + nubers are spaces in printout. keywords are multiplied also because of that
+		linesep = '%s+%s+%s+%s' % (''.ljust(self.version_length+1, '-'),
+			''.ljust(self.keyword_length*2+1, '-'),
+			''.ljust(redundant_length+self.slot_length+3, '-'),
+			''.ljust(repositories_length+1, '-')
+		)
+
+		self.content = self.__prepareContentResult(ver, kws, red, slt, self.slot_length, rep, linesep)
+		self.content_length = len(linesep)
+		self.cp = port.cpv_getkey(packages[0])

Added: trunk/gentoolkit/pym/gentoolkit/eshowkw/keywords_header.py
===================================================================
--- trunk/gentoolkit/pym/gentoolkit/eshowkw/keywords_header.py	                        (rev 0)
+++ trunk/gentoolkit/pym/gentoolkit/eshowkw/keywords_header.py	2010-10-28 20:13:51 UTC (rev 831)
@@ -0,0 +1,99 @@
+# Copyright 2001-2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+__all__ = ['keywords_header']
+
+from portage import settings as ports
+from portage.output import colorize
+from display_pretty import colorize_string
+from display_pretty import align_string
+
+class keywords_header:
+	__IMPARCHS = [ 'arm', 'amd64', 'x86' ]
+	__ADDITIONAL_FIELDS = [ 'unused', 'slot' ]
+	__EXTRA_FIELDS = [ 'repo' ]
+
+	def __readKeywords(self):
+		"""Read all available keywords from portage."""
+		return [x for x in ports.archlist()
+			if not x.startswith('~')]
+
+	def __sortKeywords(self, keywords, prefix = False, required_keywords = []):
+		"""Sort keywords with short archs first"""
+		# user specified only some keywords to display
+		if len(required_keywords) != 0:
+			tmpkeywords = [k for k in keywords
+				if k in required_keywords]
+			# idiots might specify non-existant archs
+			if len(tmpkeywords) != 0:
+				keywords = tmpkeywords
+
+		normal = [k for k in keywords
+			if len(k.split('-')) == 1]
+		normal.sort()
+
+		if prefix:
+			longer = [k for k in keywords
+				if len(k.split('-')) != 1]
+			longer.sort()
+			normal.extend(longer)
+		return normal
+
+	def __readAdditionalFields(self):
+		"""Prepare list of aditional fileds displayed by eshowkw (2nd part)"""
+		return self.__ADDITIONAL_FIELDS
+
+	def __readExtraFields(self):
+		"""Prepare list of extra fileds displayed by eshowkw (3rd part)"""
+		return self.__EXTRA_FIELDS
+
+	def __formatKeywords(self, keywords, align, length):
+		"""Append colors and align keywords properly"""
+		tmp = []
+		for keyword in keywords:
+			tmp2 = keyword
+			keyword = align_string(keyword, align, length)
+			# % are used as separators for further split so we wont loose spaces and coloring
+			keyword = '%'.join(list(keyword))
+			if tmp2 in self.__IMPARCHS:
+				tmp.append(colorize_string('darkyellow', keyword))
+			else:
+				tmp.append(keyword)
+		return tmp
+
+	def __formatAdditional(self, additional, align, length):
+		"""Align additional items properly"""
+		# % are used as separators for further split so we wont loose spaces and coloring
+		return ['%'.join(align_string(x, align, length)) for x in additional]
+
+	def __prepareExtra(self, extra, align, length):
+		content = []
+		content.append(''.ljust(length, '-'))
+		content.extend(self.__formatAdditional(extra, align, length))
+		return content
+
+	def __prepareResult(self, keywords, additional, align, length):
+		"""Parse keywords and additional fields into one list with proper separators"""
+		content = []
+		content.append(''.ljust(length, '-'))
+		content.extend(self.__formatKeywords(keywords, align, length))
+		content.append(''.ljust(length, '-'))
+		content.extend(self.__formatAdditional(additional, align, length))
+		return content
+
+	def __init__(self, prefix = False, required_keywords = [], keywords_align = 'bottom'):
+		"""Initialize keywords header."""
+		additional = self.__readAdditionalFields()
+		extra = self.__readExtraFields()
+		self.keywords = self.__sortKeywords(self.__readKeywords(), prefix, required_keywords)
+		self.length = max(
+			max([len(x) for x in self.keywords]),
+			max([len(x) for x in additional]),
+			max([len(x) for x in extra])
+		)
+		#len(max([max(self.keywords, key=len), max(additional, key=len)], key=len))
+		self.keywords_count = len(self.keywords)
+		self.additional_count = len(additional)
+		self.extra_count = len(extra)
+		self.content = self.__prepareResult(self.keywords, additional, keywords_align, self.length)
+		self.extra = self.__prepareExtra(extra, keywords_align, self.length)