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#!/usr/bin/python
# Copyright (c) 2014, The Tor Project, Inc.
# See LICENSE for licensing information
#
# This script reformats a section of the changelog to wrap everything to
# the right width and put blank lines in the right places. Eventually,
# it might include a linter.
#
# To run it, pipe a section of the changelog (starting with "Changes
# in Tor 0.x.y.z-alpha" through the script.)
import os
import re
import sys
import textwrap
TP_MAINHEAD = 0
TP_HEADTEXT = 1
TP_BLANK = 2
TP_SECHEAD = 3
TP_ITEMFIRST = 4
TP_ITEMBODY = 5
TP_END = 6
def head_parser(line):
if re.match(r'^[A-Z]', line):
return TP_MAINHEAD
elif re.match(r'^ o ', line):
return TP_SECHEAD
elif re.match(r'^\s*$', line):
return TP_BLANK
else:
return TP_HEADTEXT
def body_parser(line):
if re.match(r'^ o ', line):
return TP_SECHEAD
elif re.match(r'^ -',line):
return TP_ITEMFIRST
elif re.match(r'^ \S', line):
return TP_ITEMBODY
elif re.match(r'^\s*$', line):
return TP_BLANK
elif re.match(r'^Changes in', line):
return TP_END
else:
print "Weird line %r"%line
class ChangeLog(object):
def __init__(self):
self.mainhead = None
self.headtext = []
self.curgraf = None
self.sections = []
self.cursection = None
self.lineno = 0
def addLine(self, tp, line):
self.lineno += 1
if tp == TP_MAINHEAD:
assert not self.mainhead
self.mainhead = line
elif tp == TP_HEADTEXT:
if self.curgraf is None:
self.curgraf = []
self.headtext.append(self.curgraf)
self.curgraf.append(line)
elif tp == TP_BLANK:
self.curgraf = None
elif tp == TP_SECHEAD:
self.cursection = [ self.lineno, line, [] ]
self.sections.append(self.cursection)
elif tp == TP_ITEMFIRST:
item = ( self.lineno, [ [line] ])
self.curgraf = item[1][0]
self.cursection[2].append(item)
elif tp == TP_ITEMBODY:
if self.curgraf is None:
self.curgraf = []
self.cursection[2][1][-1].append(self.curgraf)
self.curgraf.append(line)
else:
assert "This" is "unreachable"
def lint_head(self, line, head):
m = re.match(r'^ *o ([^\(]+)((?:\([^\)]+\))?):', head)
if not m:
print >>sys.stderr, "Weird header format on line %s"%line
def lint_item(self, line, grafs, head_type):
pass
def lint(self):
self.head_lines = {}
for sec_line, sec_head, items in self.sections:
head_type = self.lint_head(sec_line, sec_head)
for item_line, grafs in items:
self.lint_item(item_line, grafs, head_type)
def dumpGraf(self,par,indent1,indent2=-1):
if indent2 == -1:
indent2 = indent1
text = " ".join(re.sub(r'\s+', ' ', line.strip()) for line in par)
print textwrap.fill(text, width=72,
initial_indent=" "*indent1,
subsequent_indent=" "*indent2,
break_on_hyphens=False)
def dump(self):
print self.mainhead
for par in self.headtext:
self.dumpGraf(par, 2)
print
for _,head,items in self.sections:
if not head.endswith(':'):
print >>sys.stderr, "adding : to %r"%head
head = head + ":"
print head
for _,grafs in items:
self.dumpGraf(grafs[0],4,6)
for par in grafs[1:]:
print
self.dumpGraf(par,6,6)
print
print
CL = ChangeLog()
parser = head_parser
sys.stdin = open('ChangeLog', 'r')
for line in sys.stdin:
line = line.rstrip()
tp = parser(line)
if tp == TP_SECHEAD:
parser = body_parser
elif tp == TP_END:
nextline = line
break
CL.addLine(tp,line)
CL.lint()
sys.stdout = open('ChangeLog.new', 'w')
CL.dump()
print nextline
for line in sys.stdin:
sys.stdout.write(line)
os.rename('ChangeLog.new', 'ChangeLog')
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