Moved backend stuff into own backend-package

1 files changed, 525 insertions, 0 deletions

diff --git a/geneticone/backend/flags.py b/geneticone/backend/flags.py
new file mode 100644
index 0000000..8899fc5
--- /dev/null
+++ b/geneticone/backend/flags.py
@@ -0,0 +1,525 @@
+#
+# File: geneticone/flags.py
+# This file is part of the Genetic/One-Project, a graphical portage-frontend.
+#
+# Copyright (C) 2006 Necoro d.M.
+# This is free software.  You may redistribute copies of it under the terms of
+# the GNU General Public License version 2.
+# There is NO WARRANTY, to the extent permitted by law.
+#
+# Written by Necoro d.M. <necoro@necoro.net>
+
+import os
+import os.path
+from subprocess import Popen, PIPE # needed for grep
+
+import geneticone
+from helper import *
+import portage
+from portage_util import unique_array
+
+### GENERAL PART ###
+
+def grep (pkg, path):
+	"""Grep runs "egrep" on a given path and looks for occurences of a given package.
+	@param pkg: the package
+	@type pkg: string (cpv) or L{geneticone.Package}-object
+	@param path: path to look in
+	@type path: string
+	
+	@returns: occurences of pkg in the format: "file:line-no:complete_line_found"
+	@rtype: string"""
+
+	if not isinstance(pkg, geneticone.Package):
+		pkg = geneticone.Package(pkg) # assume it is a cpv or a gentoolkit.Package
+
+	command = "egrep -x -n -r -H '^[<>!=~]{0,2}%s(-[0-9].*)?[[:space:]]?.*$' %s"
+	return Popen((command % (pkg.get_cp(), path)), shell = True, stdout = PIPE).communicate()[0].splitlines()
+
+def get_data(pkg, path):
+	"""This splits up the data of L{grep} and builds tuples in the format (file,line,criterion,list_of_flags).
+	@param pkg: package to find
+	@type pkg: string (cpv) or L{geneticone.Package}-object
+	@param path: path to look in
+	@type path: string
+	
+	@returns: a list of tuples in the form (file,line,criterion,list_of_flags)
+	@rtype: list"""
+	
+	flags = []
+
+	# do grep
+	list = grep(pkg, path)
+	
+	for i in range(len(list)):
+		file, line, fl = tuple(list[i].split(":")) # get file, line and flag-list
+		fl = fl.split()
+		crit = fl[0]
+		fl = fl[1:]
+		# stop after first comment
+		for i in range(len(fl)):
+			if fl[i][0] == "#": #comment - stop here
+				fl = fl[:i]
+				break
+		flags.append((file,line,crit,fl))
+
+	return flags
+
+### USE FLAG PART ###
+USE_PATH = os.path.join(portage.USER_CONFIG_PATH,"package.use")
+USE_PATH_IS_DIR = os.path.isdir(USE_PATH)
+useFlags = {} # useFlags in the file
+newUseFlags = {} # useFlags as we want them to be: format: cpv -> [(file, line, useflag, (true if removed from list / false if added))]
+
+def invert_use_flag (flag):
+	"""Invertes a flag.
+
+		>>> invert_use_flag("foo")
+		-foo
+		>>> invert_use_flag("-bar")
+		bar
+
+	@param flag: the flag
+	@type flag: string
+	@returns: inverted flag
+	@rtype: string
+	"""
+	if flag[0] == "-":
+		return flag[1:]
+	else:
+		return "-"+flag
+
+def set_use_flag (pkg, flag):
+	"""Sets the useflag for a given package.
+	
+	@param pkg: the package
+	@type pkg: string (cpv) or L{geneticone.Package}-object
+	@param flag: the flag to set
+	@type flag: string"""
+
+	global useFlags, newUseFlags
+
+	if not isinstance(pkg, geneticone.Package):
+		pkg = geneticone.Package(pkg) # assume cpv or gentoolkit.Package
+
+	cpv = pkg.get_cpv()
+	invFlag = invert_use_flag(flag)
+	
+	# if not saved in useFlags, get it by calling get_data() which calls grep()
+	data = None
+	if not cpv in useFlags:
+		data = get_data(pkg, USE_PATH)
+		useFlags[cpv] = data
+	else:
+		data = useFlags[cpv]
+
+	if not cpv in newUseFlags:
+		newUseFlags[cpv] = []
+
+	debug("data: "+str(data))
+	# add a useflag / delete one
+	added = False
+	for file, line, crit, flags in data:
+		if pkg.matches(crit):
+			# we have the inverted flag in the uselist/newuselist --> delete it
+			if invFlag in flags or (file, line, invFlag, False) in newUseFlags[cpv] or (file, line, flag, True) in newUseFlags[cpv]:
+				if added: del newUseFlags[-1] # we currently added it as an extra option - delete it
+				added = True
+				jumpOut = False
+				for t in [(file, line, invFlag, False),(file, line, flag, True)]:
+					if t in newUseFlags[cpv]:
+						newUseFlags[cpv].remove(t)
+						jumpOut = True
+						break
+				if not jumpOut:	newUseFlags[cpv].append((file, line, invFlag, True))
+				break
+			
+			# we want to duplicate the flag --> ignore
+			elif flag in flags:
+				added = True # emulate adding
+				break
+
+			# add as an extra flag
+			else:
+				if not added: newUseFlags[cpv].append((file, line, flag, False))
+				added = True
+	
+	# create a new line
+	if not added:
+		path = USE_PATH
+		if USE_PATH_IS_DIR:
+			path = os.path.join(USE_PATH,"geneticone")
+		
+		try:
+			newUseFlags[cpv].remove((path, -1, invFlag, False))
+		except ValueError: # not in UseFlags
+			newUseFlags[cpv].append((path, -1, flag, False))
+
+	newUseFlags[cpv] = unique_array(newUseFlags[cpv])
+	debug("newUseFlags: "+str(newUseFlags))
+
+def remove_new_use_flags (cpv):
+	"""Removes all new use-flags for a specific package.
+	@param cpv: the package for which to remove the flags
+	@type cpv: string (cpv) or L{geneticone.Package}-object"""
+	if isinstance(cpv, geneticone.Package):
+		cpv = cpv.get_cpv()
+	
+	try:
+		del newUseFlags[cpv]
+	except KeyError:
+		pass
+
+def get_new_use_flags (cpv):
+	"""Gets all the new use-flags for a specific package.
+	@param cpv: the package for which to remove the flags
+	@type cpv: string (cpv) or L{geneticone.Package}-object
+	@returns: list of flags
+	@rtype: list"""
+	
+	if isinstance(cpv, geneticone.Package):
+		cpv = cpv.get_cpv()
+
+	list2return = []
+	try:
+		for file, line, flag, remove in newUseFlags[cpv]:
+			if remove:
+				list2return.append(invert_use_flag(flag))
+			else:
+				list2return.append(flag)
+	except KeyError:
+		pass
+
+	return list2return
+
+def write_use_flags ():
+	"""This writes our changed useflags into the file."""
+	global newUseFlags, useFlags
+
+	def insert (flag, list):
+		"""Shortcut for inserting a new flag right after the package-name."""
+		list.insert(1,flag)
+	
+	def remove (flag, list):
+		"""Removes a flag."""
+		try:
+			list.remove(flag)
+		except ValueError: # flag is given as flag\n
+			list.remove(flag+"\n")
+			list.append("\n") #re-insert the newline
+
+		# no more flags there - comment it out
+		if len(list) == 1 or list[1][0] in ("#","\n"):
+			list[0] = "#"+list[0]
+			insert("#removed by geneticone#",list)
+
+	file_cache = {} # cache for having to read the file only once: name->[lines]
+	for cpv in newUseFlags:
+		for file, line, flag, delete in newUseFlags[cpv]:
+			line = int(line) # it is saved as a string so far!
+			
+			# add new line
+			if line == -1:
+				msg = "\n#geneticone update#\n=%s %s\n" % (cpv, flag)
+				if not file in file_cache:
+					f = open(file, "a")
+					f.write(msg)
+					f.close()
+				else:
+					file_cache[file].append(msg)
+			# change a line
+			else:
+				if not file in file_cache:
+					# read file
+					f = open(file, "r")
+					lines = []
+					i = 1
+					while i < line: # stop at the given line
+						lines.append(f.readline())
+						i = i+1
+					l = f.readline().split(" ")
+					# delete or insert
+					if delete:
+						remove(flag,l)
+					else:
+						insert(flag,l)
+					lines.append(" ".join(l))
+					
+					# read the rest
+					lines.extend(f.readlines())
+					
+					file_cache[file] = lines
+					f.close()
+				else: # in cache
+					l = file_cache[file][line-1].split(" ")
+					if delete:
+						remove(flag,l)
+					else:
+						insert(flag,l)
+					file_cache[file][line-1] = " ".join(l)
+	
+	# write to disk
+	for file in file_cache.keys():
+		f = open(file, "w")
+		f.writelines(file_cache[file])
+		f.close()
+	# reset
+	useFlags = {}
+	newUseFlags = {}
+
+#
+#
+# NOTHING IS WORKING / IN USE BELOW THIS LINE
+#
+#
+### MASKING PART ###
+MASK_PATH = os.path.join(portage.USER_CONFIG_PATH,"package.mask")
+UNMASK_PATH = os.path.join(portage.USER_CONFIG_PATH,"package.unmask")
+MASK_PATH_IS_DIR = os.path.isdir(MASK_PATH)
+UNMASK_PATH_IS_DIR = os.path.isdir(UNMASK_PATH)
+
+new_masked = {}
+new_unmasked = {}
+
+def set_masked (pkg):
+	global new_masked, newunmasked
+	if not isinstance(pkg, geneticone.Package):
+		pkg = geneticone.Package(pkg)
+
+	cpv = pkg.get_cpv()
+
+	if not cpv in new_unmasked:
+		new_unmasked[cpv] = []
+	if not cpv in new_masked:
+		new_masked[cpv] = []
+	
+	nu = new_unmasked[cpv][:]
+	for file, line in nu:
+		if line == "-1":
+			new_unmasked[cpv].remove(file, line)
+
+	nm = new_masked[cpv][:]
+	for file, line in nm:
+		if line != "-1":
+			new_masked[cpv].remove(file, line)
+
+	if pkg.is_masked():
+		return
+
+	unmasked = get_data(pkg, UNMASK_PATH)
+	debug("data (unmasked): "+str(unmasked))
+	done = False
+	for file, line, crit, flags in unmasked:
+		if pkg.matches(crit):
+			new_unmasked[cpv].append((file, line))
+			done = True
+
+	if done: return
+
+	if MASK_PATH_IS_DIR:
+		file = os.path.join(MASK_PATH, "geneticone")
+	else:
+		file = MASK_PATH
+	
+	new_masked[cpv].append((file, "-1"))
+	new_masked[cpv] = unique_array(new_masked[cpv])
+	debug("new_masked: "+str(new_masked))
+
+def set_unmasked (pkg):
+	global new_masked, new_unmasked
+	if not isinstance(pkg, geneticone.Package):
+		pkg = geneticone.Package(pkg)
+	
+	cpv = pkg.get_cpv()
+
+	if not cpv in new_unmasked:
+		new_unmasked[cpv] = []
+	if not cpv in new_masked:
+		new_masked[cpv] = []
+	
+	nu = new_unmasked[cpv][:]
+	for file, line in nu:
+		if line != "-1":
+			new_unmasked[cpv].remove(file, line)
+	
+	nm = new_masked[cpv][:]
+	for file, line in nm:
+		if line == "-1":
+			new_masked[cpv].remove(file, line)
+
+	if not pkg.is_masked():
+		return
+
+	masked = get_data(pkg, MASK_PATH)
+	debug("data (masked): "+str(masked))
+	done = False
+	for file, line, crit, fl in masked:
+		if pkg.matches(crit):
+			new_masked[cpv].append((file, line))
+			done = True
+
+	if done: return
+
+	if UNMASK_PATH_IS_DIR:
+		file = os.path.join(UNMASK_PATH, "geneticone")
+	else:
+		file = UNMASK_PATH
+
+	new_unmasked[cpv].append((file, "-1"))
+	new_unmasked[cpv] = unique_array(new_unmasked[cpv])
+	debug("new_unmasked: "+str(new_unmasked))
+
+def write_masked_unmasked ():
+	global new_unmasked, new_masked
+	file_cache = {}
+
+	def write(cpv, file, line):
+		line = int(line)
+		# add new line
+		if line == -1:
+			msg = "\n#geneticone update#\n=%s\n" % cpv
+			if not file in file_cache:
+				f = open(file, "a")
+				f.write(msg)
+				f.close()
+			else:
+				file_cache[file].append(msg)
+		# change a line
+		else:
+			if not file in file_cache:
+				# read file
+				f = open(file, "r")
+				lines = []
+				i = 1
+				while i < line: # stop at the given line
+					lines.append(f.readline())
+					i = i+1
+				# delete
+				l = f.readline()
+				l = "#"+l[:-1]+" # removed by geneticone\n"
+				lines.append(l)
+				
+				# read the rest
+				lines.extend(f.readlines())
+				
+				file_cache[file] = lines
+				f.close()
+			else: # in cache
+				l = file_cache[file][line-1]
+				# delete:
+				l = "#"+l[:-1]+" # removed by geneticone\n"
+				file_cache[file][line-1] = l
+	
+	
+	for cpv in new_masked:
+		for file, line in new_masked[cpv]:
+			write(cpv, file, line)
+	
+	for cpv in new_unmasked:
+		for file, line in new_unmasked[cpv]:
+			write(cpv, file, line)
+	
+	# write to disk
+	for file in file_cache.keys():
+		f = open(file, "w")
+		f.writelines(file_cache[file])
+		f.close()
+	# reset
+	new_masked = {}
+	new_unmasked = {}
+
+### TESTING PART ###
+TESTING_PATH = os.path.join(portage.USER_CONFIG_PATH, "package.keywords")
+TESTING_PATH_IS_DIR = os.path.isdir(TESTING_PATH)
+newTesting = {}
+arch = ""
+
+def set_testing (pkg, enable):
+	"""Enables the package for installing when it is marked as testing (~ARCH).
+	@param pkg: the package
+	@type pkg: string (cpv) or L{geneticone.Package}-object
+	@param enable: controls whether to enable (True) or disable (False) for test-installing
+	@type enable: boolean"""
+
+	global arch, newTesting
+	if not isinstance(pkg, geneticone.Package):
+		pkg = geneticone.Package(pkg)
+
+	arch = pkg.get_settings("ARCH")
+	cpv = pkg.get_cpv()
+	if not cpv in newTesting: 
+		newTesting[cpv] = []
+
+	debug("arch: "+arch)
+	for file, line in newTesting[cpv]:
+		if (enable and line != "-1") or (not enable and line == "-1"):
+			newTesting[cpv].remove((file, line))
+
+	if (enable and (pkg.get_mask_status() % 3 == 0)) or (not enable and (pkg.get_mask_status() % 3 != 0)):
+		return
+
+	if not enable:
+		test = get_data(pkg, TESTING_PATH)
+		debug("data (test): "+str(test))
+		for file, line, crit, flags in test:
+			if pkg.matches(crit) and flags[0] == "~"+arch:
+				newTesting[cpv].append((file, line))
+	else:
+		if TESTING_PATH_IS_DIR:
+			file = os.path.join(TESTING_PATH, "geneticone")
+		else:
+			file = TESTING_PATH
+		newTesting[cpv].append((file, "-1"))
+
+	newTesting[cpv] = unique_array(newTesting[cpv])
+	debug("newTesting: "+str(newTesting))
+
+def write_testing ():
+	global arch, newTesting
+	file_cache = {}
+
+	for cpv in newTesting:
+		for file, line in newTesting[cpv]:
+			line = int(line)
+			# add new line
+			if line == -1:
+				msg = "\n#geneticone update#\n=%s ~%s\n" % (cpv, arch)
+				if not file in file_cache:
+					f = open(file, "a")
+					f.write(msg)
+					f.close()
+				else:
+					file_cache[file].append(msg)
+			# change a line
+			else:
+				if not file in file_cache:
+					# read file
+					f = open(file, "r")
+					lines = []
+					i = 1
+					while i < line: # stop at the given line
+						lines.append(f.readline())
+						i = i+1
+					# delete
+					l = f.readline()
+					l = "#"+l[:-1]+" # removed by geneticone\n"
+					lines.append(l)
+					
+					# read the rest
+					lines.extend(f.readlines())
+					
+					file_cache[file] = lines
+					f.close()
+				else: # in cache
+					l = file_cache[file][line-1]
+					# delete:
+					l = "#"+l[:-1]+" # removed by geneticone\n"
+					file_cache[file][line-1] = l
+	
+	# write to disk
+	for file in file_cache.keys():
+		f = open(file, "w")
+		f.writelines(file_cache[file])
+		f.close()
+	# reset
+	newTesting = {}