#!/usr/bin/env python
import sys, re

#----------------------------------------------------------------------------
PROGRAM = "Deskbar Applet"
VERSION = "0.7.0"

TEMPLATE = """
==============
%s %s
==============

Changes:
%s
"""[1:]

# if CONTRIB_TEMPLATE is None print each changelog entry along with it's author
#else collect all contributors in the last line. as defined by the template
#CONTRIB_TEMPLATE = None
CONTRIB_TEMPLATE = "Contributors to this release: %s"

# Wether to stop when a line like ========= Version ======== is found
BREAK_AT_VERSION_CHANGE = True
if "-a" in sys.argv:
	BREAK_AT_VERSION_CHANGE = False

#------------------------------------------------------------------------

STATE_HEADER           = 1
STATE_HEADER_NAME_END  = 2
STATE_HEADER_VERSION   = 3
STATE_HEADER_VERSION_IN= 4
STATE_FILES_OR_COMMENT = 5
STATE_FILES            = 6
STATE_COMMENT          = 7

content = file("ChangeLog").read()
state = STATE_HEADER
NEWLINE_FLAG = False
comments = []

comment = ""
name = ""
for char in content:
	if char in (" ", "\n", "\t"):
		if state == STATE_COMMENT and not comment.endswith(' '):
			comment = comment + ' '
		elif state == STATE_HEADER and not name.endswith(' '):
			name = name + ' '
		if char == "\n":
			NEWLINE_FLAG = True
		continue	

	if state == STATE_HEADER or state == STATE_HEADER_NAME_END:
		if char == ">":
			state = STATE_FILES_OR_COMMENT
		elif char in "0123456789-":
			pass
		elif char == "<":
			state = STATE_HEADER_NAME_END
		elif state == STATE_HEADER:
			name = name + char
		
	elif state == STATE_FILES:
		if char == ":":
			state = STATE_FILES_OR_COMMENT
		
	elif state == STATE_FILES_OR_COMMENT:
		if char == "*" or char == "(":
			state = STATE_FILES
		else:
			state = STATE_COMMENT
			comment = comment + char
	
	elif state == STATE_COMMENT:
		if (char in "0123456789" or char == "*" or char == "=") and NEWLINE_FLAG:
			if char in "0123456789":
				state = STATE_HEADER
			elif char == "*":
				state = STATE_FILES
			elif BREAK_AT_VERSION_CHANGE: # and char == "="
				# We have a version change, we can stop or continue
				break
			
			if re.match(r"(A|R) [a-zA-Z0-9-/_\. ]+:", comment.strip()) == None:
				#Remember the comment
				name = name.strip()
				if name == "":
					name = comments[-1][0]
				comments.append((name.strip(), comment.strip()))
			
			# Clear the current comment
			comment = ""
			name = ""
		else:
			# Appending letters
			comment = comment + char

	NEWLINE_FLAG = False

if comment != "":
	name = name.strip()
	if name == "":
		name = comments[-1][0]
	comments.append((name.strip(), comment.strip()))

if CONTRIB_TEMPLATE != None:
	print TEMPLATE % (PROGRAM, VERSION, '\n'.join(["\t* %s" % comment[1] for comment in comments]))
	
	contributors = set()
	for name, comment in comments:
		contributors.add(name)
	
	contrib_string = "" 
	for name in contributors:
		if contrib_string == "":
			contrib_string = name
		elif name != "":
			contrib_string = "%s, %s" % (contrib_string, name)
	
	print CONTRIB_TEMPLATE % contrib_string
else:
	print TEMPLATE % (PROGRAM, VERSION, '\n'.join(["\t* %s (%s)" % (comment[1], comment[0]) for comment in comments]))
print