Tools/faqwiz/faqwiz.py

   1 """Generic FAQ Wizard.
   2
   3 This is a CGI program that maintains a user-editable FAQ.  It uses RCS
   4 to keep track of changes to individual FAQ entries.  It is fully
   5 configurable; everything you might want to change when using this
   6 program to maintain some other FAQ than the Python FAQ is contained in
   7 the configuration module, faqconf.py.
   8
   9 Note that this is not an executable script; it's an importable module.
  10 The actual script to place in cgi-bin is faqw.py.
  11
  12 """
  13
  14 import sys, string, time, os, stat, re, cgi, faqconf
  15 from faqconf import *                   # This imports all uppercase names
  16 now = time.time()
  17
  18 class FileError:
  19     def __init__(self, file):
  20         self.file = file
  21
  22 class InvalidFile(FileError):
  23     pass
  24
  25 class NoSuchSection(FileError):
  26     def __init__(self, section):
  27         FileError.__init__(self, NEWFILENAME %(section, 1))
  28         self.section = section
  29
  30 class NoSuchFile(FileError):
  31     def __init__(self, file, why=None):
  32         FileError.__init__(self, file)
  33         self.why = why
  34
  35 def escape(s):
  36     s = string.replace(s, '&', '&amp;')
  37     s = string.replace(s, '<', '&lt;')
  38     s = string.replace(s, '>', '&gt;')
  39     return s
  40
  41 def escapeq(s):
  42     s = escape(s)
  43     s = string.replace(s, '"', '&quot;')
  44     return s
  45
  46 def _interpolate(format, args, kw):
  47     try:
  48         quote = kw['_quote']
  49     except KeyError:
  50         quote = 1
  51     d = (kw,) + args + (faqconf.__dict__,)
  52     m = MagicDict(d, quote)
  53     return format % m
  54
  55 def interpolate(format, *args, **kw):
  56     return _interpolate(format, args, kw)
  57
  58 def emit(format, *args, **kw):
  59     try:
  60         f = kw['_file']
  61     except KeyError:
  62         f = sys.stdout
  63     f.write(_interpolate(format, args, kw))
  64
  65 translate_prog = None
  66
  67 def translate(text, pre=0):
  68     global translate_prog
  69     if not translate_prog:
  70         translate_prog = prog = re.compile(
  71             r'\b(http|ftp|https)://\S+(\b|/)|\b[-.\w]+@[-.\w]+')
  72     else:
  73         prog = translate_prog
  74     i = 0
  75     list = []
  76     while 1:
  77         m = prog.search(text, i)
  78         if not m:
  79             break
  80         j = m.start()
  81         list.append(escape(text[i:j]))
  82         i = j
  83         url = m.group(0)
  84         while url[-1] in '();:,.?\'"<>':
  85             url = url[:-1]
  86         i = i + len(url)
  87         url = escape(url)
  88         if not pre or (pre and PROCESS_PREFORMAT):
  89             if ':' in url:
  90                 repl = '<A HREF="%s">%s</A>' % (url, url)
  91             else:
  92                 repl = '<A HREF="mailto:%s">%s</A>' % (url, url)
  93         else:
  94             repl = url
  95         list.append(repl)
  96     j = len(text)
  97     list.append(escape(text[i:j]))
  98     return string.join(list, '')
  99
 100 def emphasize(line):
 101     return re.sub(r'\*([a-zA-Z]+)\*', r'<I>\1</I>', line)
 102
 103 revparse_prog = None
 104
 105 def revparse(rev):
 106     global revparse_prog
 107     if not revparse_prog:
 108         revparse_prog = re.compile(r'^(\d{1,3})\.(\d{1,4})$')
 109     m = revparse_prog.match(rev)
 110     if not m:
 111         return None
 112     [major, minor] = map(string.atoi, m.group(1, 2))
 113     return major, minor
 114
 115 def load_cookies():
 116     if not os.environ.has_key('HTTP_COOKIE'):
 117         return {}
 118     raw = os.environ['HTTP_COOKIE']
 119     words = map(string.strip, string.split(raw, ';'))
 120     cookies = {}
 121     for word in words:
 122         i = string.find(word, '=')
 123         if i >= 0:
 124             key, value = word[:i], word[i+1:]
 125             cookies[key] = value
 126     return cookies
 127
 128 def load_my_cookie():
 129     cookies = load_cookies()
 130     try:
 131         value = cookies[COOKIE_NAME]
 132     except KeyError:
 133         return {}
 134     import urllib
 135     value = urllib.unquote(value)
 136     words = string.split(value, '/')
 137     while len(words) < 3:
 138         words.append('')
 139     author = string.join(words[:-2], '/')
 140     email = words[-2]
 141     password = words[-1]
 142     return {'author': author,
 143             'email': email,
 144             'password': password}
 145
 146 def send_my_cookie(ui):
 147     name = COOKIE_NAME
 148     value = "%s/%s/%s" % (ui.author, ui.email, ui.password)
 149     import urllib
 150     value = urllib.quote(value)
 151     then = now + COOKIE_LIFETIME
 152     gmt = time.gmtime(then)
 153     path = os.environ.get('SCRIPT_NAME', '/cgi-bin/')
 154     print "Set-Cookie: %s=%s; path=%s;" % (name, value, path),
 155     print time.strftime("expires=%a, %d-%b-%y %X GMT", gmt)
 156
 157 class MagicDict:
 158
 159     def __init__(self, d, quote):
 160         self.__d = d
 161         self.__quote = quote
 162
 163     def __getitem__(self, key):
 164         for d in self.__d:
 165             try:
 166                 value = d[key]
 167                 if value:
 168                     value = str(value)
 169                     if self.__quote:
 170                         value = escapeq(value)
 171                     return value
 172             except KeyError:
 173                 pass
 174         return ''
 175
 176 class UserInput:
 177
 178     def __init__(self):
 179         self.__form = cgi.FieldStorage()
 180
 181     def __getattr__(self, name):
 182         if name[0] == '_':
 183             raise AttributeError
 184         try:
 185             value = self.__form[name].value
 186         except (TypeError, KeyError):
 187             value = ''
 188         else:
 189             value = string.strip(value)
 190         setattr(self, name, value)
 191         return value
 192
 193     def __getitem__(self, key):
 194         return getattr(self, key)
 195
 196 class FaqEntry:
 197
 198     def __init__(self, fp, file, sec_num):
 199         self.file = file
 200         self.sec, self.num = sec_num
 201         if fp:
 202             import rfc822
 203             self.__headers = rfc822.Message(fp)
 204             self.body = string.strip(fp.read())
 205         else:
 206             self.__headers = {'title': "%d.%d. " % sec_num}
 207             self.body = ''
 208
 209     def __getattr__(self, name):
 210         if name[0] == '_':
 211             raise AttributeError
 212         key = string.join(string.split(name, '_'), '-')
 213         try:
 214             value = self.__headers[key]
 215         except KeyError:
 216             value = ''
 217         setattr(self, name, value)
 218         return value
 219
 220     def __getitem__(self, key):
 221         return getattr(self, key)
 222
 223     def load_version(self):
 224         command = interpolate(SH_RLOG_H, self)
 225         p = os.popen(command)
 226         version = ''
 227         while 1:
 228             line = p.readline()
 229             if not line:
 230                 break
 231             if line[:5] == 'head:':
 232                 version = string.strip(line[5:])
 233         p.close()
 234         self.version = version
 235
 236     def getmtime(self):
 237         if not self.last_changed_date:
 238             return 0
 239         try:
 240             return os.stat(self.file)[stat.ST_MTIME]
 241         except os.error:
 242             return 0
 243
 244     def emit_marks(self):
 245         mtime = self.getmtime()
 246         if mtime >= now - DT_VERY_RECENT:
 247             emit(MARK_VERY_RECENT, self)
 248         elif mtime >= now - DT_RECENT:
 249             emit(MARK_RECENT, self)
 250
 251     def show(self, edit=1):
 252         emit(ENTRY_HEADER1, self)
 253         self.emit_marks()
 254         emit(ENTRY_HEADER2, self)
 255         pre = 0
 256         raw = 0
 257         for line in string.split(self.body, '\n'):
 258             # Allow the user to insert raw html into a FAQ answer
 259             # (Skip Montanaro, with changes by Guido)
 260             tag = string.lower(string.rstrip(line))
 261             if tag == '<html>':
 262                 raw = 1
 263                 continue
 264             if tag == '</html>':
 265                 raw = 0
 266                 continue
 267             if raw:
 268                 print line
 269                 continue
 270             if not string.strip(line):
 271                 if pre:
 272                     print '</PRE>'
 273                     pre = 0
 274                 else:
 275                     print '<P>'
 276             else:
 277                 if line[0] not in string.whitespace:
 278                     if pre:
 279                         print '</PRE>'
 280                         pre = 0
 281                 else:
 282                     if not pre:
 283                         print '<PRE>'
 284                         pre = 1
 285                 if '/' in line or '@' in line:
 286                     line = translate(line, pre)
 287                 elif '<' in line or '&' in line:
 288                     line = escape(line)
 289                 if not pre and '*' in line:
 290                     line = emphasize(line)
 291                 print line
 292         if pre:
 293             print '</PRE>'
 294             pre = 0
 295         if edit:
 296             print '<P>'
 297             emit(ENTRY_FOOTER, self)
 298             if self.last_changed_date:
 299                 emit(ENTRY_LOGINFO, self)
 300         print '<P>'
 301
 302 class FaqDir:
 303
 304     entryclass = FaqEntry
 305
 306     __okprog = re.compile(OKFILENAME)
 307
 308     def __init__(self, dir=os.curdir):
 309         self.__dir = dir
 310         self.__files = None
 311
 312     def __fill(self):
 313         if self.__files is not None:
 314             return
 315         self.__files = files = []
 316         okprog = self.__okprog
 317         for file in os.listdir(self.__dir):
 318             if self.__okprog.match(file):
 319                 files.append(file)
 320         files.sort()
 321
 322     def good(self, file):
 323         return self.__okprog.match(file)
 324
 325     def parse(self, file):
 326         m = self.good(file)
 327         if not m:
 328             return None
 329         sec, num = m.group(1, 2)
 330         return string.atoi(sec), string.atoi(num)
 331
 332     def list(self):
 333         # XXX Caller shouldn't modify result
 334         self.__fill()
 335         return self.__files
 336
 337     def open(self, file):
 338         sec_num = self.parse(file)
 339         if not sec_num:
 340             raise InvalidFile(file)
 341         try:
 342             fp = open(file)
 343         except IOError, msg:
 344             raise NoSuchFile(file, msg)
 345         try:
 346             return self.entryclass(fp, file, sec_num)
 347         finally:
 348             fp.close()
 349
 350     def show(self, file, edit=1):
 351         self.open(file).show(edit=edit)
 352
 353     def new(self, section):
 354         if not SECTION_TITLES.has_key(section):
 355             raise NoSuchSection(section)
 356         maxnum = 0
 357         for file in self.list():
 358             sec, num = self.parse(file)
 359             if sec == section:
 360                 maxnum = max(maxnum, num)
 361         sec_num = (section, maxnum+1)
 362         file = NEWFILENAME % sec_num
 363         return self.entryclass(None, file, sec_num)
 364
 365 class FaqWizard:
 366
 367     def __init__(self):
 368         self.ui = UserInput()
 369         self.dir = FaqDir()
 370
 371     def go(self):
 372         print 'Content-type: text/html'
 373         req = self.ui.req or 'home'
 374         mname = 'do_%s' % req
 375         try:
 376             meth = getattr(self, mname)
 377         except AttributeError:
 378             self.error("Bad request type %s." % `req`)
 379         else:
 380             try:
 381                 meth()
 382             except InvalidFile, exc:
 383                 self.error("Invalid entry file name %s" % exc.file)
 384             except NoSuchFile, exc:
 385                 self.error("No entry with file name %s" % exc.file)
 386             except NoSuchSection, exc:
 387                 self.error("No section number %s" % exc.section)
 388         self.epilogue()
 389
 390     def error(self, message, **kw):
 391         self.prologue(T_ERROR)
 392         emit(message, kw)
 393
 394     def prologue(self, title, entry=None, **kw):
 395         emit(PROLOGUE, entry, kwdict=kw, title=escape(title))
 396
 397     def epilogue(self):
 398         emit(EPILOGUE)
 399
 400     def do_home(self):
 401         self.prologue(T_HOME)
 402         emit(HOME)
 403
 404     def do_debug(self):
 405         self.prologue("FAQ Wizard Debugging")
 406         form = cgi.FieldStorage()
 407         cgi.print_form(form)
 408         cgi.print_environ(os.environ)
 409         cgi.print_directory()
 410         cgi.print_arguments()
 411
 412     def do_search(self):
 413         query = self.ui.query
 414         if not query:
 415             self.error("Empty query string!")
 416             return
 417         if self.ui.querytype == 'simple':
 418             query = re.escape(query)
 419             queries = [query]
 420         elif self.ui.querytype in ('anykeywords', 'allkeywords'):
 421             words = filter(None, re.split('\W+', query))
 422             if not words:
 423                 self.error("No keywords specified!")
 424                 return
 425             words = map(lambda w: r'\b%s\b' % w, words)
 426             if self.ui.querytype[:3] == 'any':
 427                 queries = [string.join(words, '|')]
 428             else:
 429                 # Each of the individual queries must match
 430                 queries = words
 431         else:
 432             # Default to regular expression
 433             queries = [query]
 434         self.prologue(T_SEARCH)
 435         progs = []
 436         for query in queries:
 437             if self.ui.casefold == 'no':
 438                 p = re.compile(query)
 439             else:
 440                 p = re.compile(query, re.IGNORECASE)
 441             progs.append(p)
 442         hits = []
 443         for file in self.dir.list():
 444             try:
 445                 entry = self.dir.open(file)
 446             except FileError:
 447                 constants
 448             for p in progs:
 449                 if not p.search(entry.title) and not p.search(entry.body):
 450                     break
 451             else:
 452                 hits.append(file)
 453         if not hits:
 454             emit(NO_HITS, self.ui, count=0)
 455         elif len(hits) <= MAXHITS:
 456             if len(hits) == 1:
 457                 emit(ONE_HIT, count=1)
 458             else:
 459                 emit(FEW_HITS, count=len(hits))
 460             self.format_all(hits, headers=0)
 461         else:
 462             emit(MANY_HITS, count=len(hits))
 463             self.format_index(hits)
 464
 465     def do_all(self):
 466         self.prologue(T_ALL)
 467         files = self.dir.list()
 468         self.last_changed(files)
 469         self.format_index(files, localrefs=1)
 470         self.format_all(files)
 471
 472     def do_compat(self):
 473         files = self.dir.list()
 474         emit(COMPAT)
 475         self.last_changed(files)
 476         self.format_index(files, localrefs=1)
 477         self.format_all(files, edit=0)
 478         sys.exit(0)                     # XXX Hack to suppress epilogue
 479
 480     def last_changed(self, files):
 481         latest = 0
 482         for file in files:
 483             entry = self.dir.open(file)
 484             if entry:
 485                 mtime = mtime = entry.getmtime()
 486                 if mtime > latest:
 487                     latest = mtime
 488         print time.strftime(LAST_CHANGED, time.localtime(latest))
 489         emit(EXPLAIN_MARKS)
 490
 491     def format_all(self, files, edit=1, headers=1):
 492         sec = 0
 493         for file in files:
 494             try:
 495                 entry = self.dir.open(file)
 496             except NoSuchFile:
 497                 continue
 498             if headers and entry.sec != sec:
 499                 sec = entry.sec
 500                 try:
 501                     title = SECTION_TITLES[sec]
 502                 except KeyError:
 503                     title = "Untitled"
 504                 emit("\n<HR>\n<H1>%(sec)s. %(title)s</H1>\n",
 505                      sec=sec, title=title)
 506             entry.show(edit=edit)
 507
 508     def do_index(self):
 509         self.prologue(T_INDEX)
 510         files = self.dir.list()
 511         self.last_changed(files)
 512         self.format_index(files, add=1)
 513
 514     def format_index(self, files, add=0, localrefs=0):
 515         sec = 0
 516         for file in files:
 517             try:
 518                 entry = self.dir.open(file)
 519             except NoSuchFile:
 520                 continue
 521             if entry.sec != sec:
 522                 if sec:
 523                     if add:
 524                         emit(INDEX_ADDSECTION, sec=sec)
 525                     emit(INDEX_ENDSECTION, sec=sec)
 526                 sec = entry.sec
 527                 try:
 528                     title = SECTION_TITLES[sec]
 529                 except KeyError:
 530                     title = "Untitled"
 531                 emit(INDEX_SECTION, sec=sec, title=title)
 532             if localrefs:
 533                 emit(LOCAL_ENTRY, entry)
 534             else:
 535                 emit(INDEX_ENTRY, entry)
 536             entry.emit_marks()
 537         if sec:
 538             if add:
 539                 emit(INDEX_ADDSECTION, sec=sec)
 540             emit(INDEX_ENDSECTION, sec=sec)
 541
 542     def do_recent(self):
 543         if not self.ui.days:
 544             days = 1
 545         else:
 546             days = string.atof(self.ui.days)
 547         try:
 548             cutoff = now - days * 24 * 3600
 549         except OverflowError:
 550             cutoff = 0
 551         list = []
 552         for file in self.dir.list():
 553             entry = self.dir.open(file)
 554             if not entry:
 555                 continue
 556             mtime = entry.getmtime()
 557             if mtime >= cutoff:
 558                 list.append((mtime, file))
 559         list.sort()
 560         list.reverse()
 561         self.prologue(T_RECENT)
 562         if days <= 1:
 563             period = "%.2g hours" % (days*24)
 564         else:
 565             period = "%.6g days" % days
 566         if not list:
 567             emit(NO_RECENT, period=period)
 568         elif len(list) == 1:
 569             emit(ONE_RECENT, period=period)
 570         else:
 571             emit(SOME_RECENT, period=period, count=len(list))
 572         self.format_all(map(lambda (mtime, file): file, list), headers=0)
 573         emit(TAIL_RECENT)
 574
 575     def do_roulette(self):
 576         import random
 577         files = self.dir.list()
 578         if not files:
 579             self.error("No entries.")
 580             return
 581         file = random.choice(files)
 582         self.prologue(T_ROULETTE)
 583         emit(ROULETTE)
 584         self.dir.show(file)
 585
 586     def do_help(self):
 587         self.prologue(T_HELP)
 588         emit(HELP)
 589
 590     def do_show(self):
 591         entry = self.dir.open(self.ui.file)
 592         self.prologue(T_SHOW)
 593         entry.show()
 594
 595     def do_add(self):
 596         self.prologue(T_ADD)
 597         emit(ADD_HEAD)
 598         sections = SECTION_TITLES.items()
 599         sections.sort()
 600         for section, title in sections:
 601             emit(ADD_SECTION, section=section, title=title)
 602         emit(ADD_TAIL)
 603
 604     def do_delete(self):
 605         self.prologue(T_DELETE)
 606         emit(DELETE)
 607
 608     def do_log(self):
 609         entry = self.dir.open(self.ui.file)
 610         self.prologue(T_LOG, entry)
 611         emit(LOG, entry)
 612         self.rlog(interpolate(SH_RLOG, entry), entry)
 613
 614     def rlog(self, command, entry=None):
 615         output = os.popen(command).read()
 616         sys.stdout.write('<PRE>')
 617         athead = 0
 618         lines = string.split(output, '\n')
 619         while lines and not lines[-1]:
 620             del lines[-1]
 621         if lines:
 622             line = lines[-1]
 623             if line[:1] == '=' and len(line) >= 40 and \
 624                line == line[0]*len(line):
 625                 del lines[-1]
 626         headrev = None
 627         for line in lines:
 628             if entry and athead and line[:9] == 'revision ':
 629                 rev = string.strip(line[9:])
 630                 mami = revparse(rev)
 631                 if not mami:
 632                     print line
 633                 else:
 634                     emit(REVISIONLINK, entry, rev=rev, line=line)
 635                     if mami[1] > 1:
 636                         prev = "%d.%d" % (mami[0], mami[1]-1)
 637                         emit(DIFFLINK, entry, prev=prev, rev=rev)
 638                     if headrev:
 639                         emit(DIFFLINK, entry, prev=rev, rev=headrev)
 640                     else:
 641                         headrev = rev
 642                     print
 643                 athead = 0
 644             else:
 645                 athead = 0
 646                 if line[:1] == '-' and len(line) >= 20 and \
 647                    line == len(line) * line[0]:
 648                     athead = 1
 649                     sys.stdout.write('<HR>')
 650                 else:
 651                     print line
 652         print '</PRE>'
 653
 654     def do_revision(self):
 655         entry = self.dir.open(self.ui.file)
 656         rev = self.ui.rev
 657         mami = revparse(rev)
 658         if not mami:
 659             self.error("Invalid revision number: %s." % `rev`)
 660         self.prologue(T_REVISION, entry)
 661         self.shell(interpolate(SH_REVISION, entry, rev=rev))
 662
 663     def do_diff(self):
 664         entry = self.dir.open(self.ui.file)
 665         prev = self.ui.prev
 666         rev = self.ui.rev
 667         mami = revparse(rev)
 668         if not mami:
 669             self.error("Invalid revision number: %s." % `rev`)
 670         if prev:
 671             if not revparse(prev):
 672                 self.error("Invalid previous revision number: %s." % `prev`)
 673         else:
 674             prev = '%d.%d' % (mami[0], mami[1])
 675         self.prologue(T_DIFF, entry)
 676         self.shell(interpolate(SH_RDIFF, entry, rev=rev, prev=prev))
 677
 678     def shell(self, command):
 679         output = os.popen(command).read()
 680         sys.stdout.write('<PRE>')
 681         print escape(output)
 682         print '</PRE>'
 683
 684     def do_new(self):
 685         entry = self.dir.new(section=string.atoi(self.ui.section))
 686         entry.version = '*new*'
 687         self.prologue(T_EDIT)
 688         emit(EDITHEAD)
 689         emit(EDITFORM1, entry, editversion=entry.version)
 690         emit(EDITFORM2, entry, load_my_cookie())
 691         emit(EDITFORM3)
 692         entry.show(edit=0)
 693
 694     def do_edit(self):
 695         entry = self.dir.open(self.ui.file)
 696         entry.load_version()
 697         self.prologue(T_EDIT)
 698         emit(EDITHEAD)
 699         emit(EDITFORM1, entry, editversion=entry.version)
 700         emit(EDITFORM2, entry, load_my_cookie())
 701         emit(EDITFORM3)
 702         entry.show(edit=0)
 703
 704     def do_review(self):
 705         send_my_cookie(self.ui)
 706         if self.ui.editversion == '*new*':
 707             sec, num = self.dir.parse(self.ui.file)
 708             entry = self.dir.new(section=sec)
 709             entry.version = "*new*"
 710             if entry.file != self.ui.file:
 711                 self.error("Commit version conflict!")
 712                 emit(NEWCONFLICT, self.ui, sec=sec, num=num)
 713                 return
 714         else:
 715             entry = self.dir.open(self.ui.file)
 716             entry.load_version()
 717         # Check that the FAQ entry number didn't change
 718         if string.split(self.ui.title)[:1] != string.split(entry.title)[:1]:
 719             self.error("Don't change the entry number please!")
 720             return
 721         # Check that the edited version is the current version
 722         if entry.version != self.ui.editversion:
 723             self.error("Commit version conflict!")
 724             emit(VERSIONCONFLICT, entry, self.ui)
 725             return
 726         commit_ok = ((not PASSWORD
 727                       or self.ui.password == PASSWORD)
 728                      and self.ui.author
 729                      and '@' in self.ui.email
 730                      and self.ui.log)
 731         if self.ui.commit:
 732             if not commit_ok:
 733                 self.cantcommit()
 734             else:
 735                 self.commit(entry)
 736             return
 737         self.prologue(T_REVIEW)
 738         emit(REVIEWHEAD)
 739         entry.body = self.ui.body
 740         entry.title = self.ui.title
 741         entry.show(edit=0)
 742         emit(EDITFORM1, self.ui, entry)
 743         if commit_ok:
 744             emit(COMMIT)
 745         else:
 746             emit(NOCOMMIT)
 747         emit(EDITFORM2, self.ui, entry, load_my_cookie())
 748         emit(EDITFORM3)
 749
 750     def cantcommit(self):
 751         self.prologue(T_CANTCOMMIT)
 752         print CANTCOMMIT_HEAD
 753         if not self.ui.passwd:
 754             emit(NEED_PASSWD)
 755         if not self.ui.log:
 756             emit(NEED_LOG)
 757         if not self.ui.author:
 758             emit(NEED_AUTHOR)
 759         if not self.ui.email:
 760             emit(NEED_EMAIL)
 761         print CANTCOMMIT_TAIL
 762
 763     def commit(self, entry):
 764         file = entry.file
 765         # Normalize line endings in body
 766         if '\r' in self.ui.body:
 767             self.ui.body = re.sub('\r\n?', '\n', self.ui.body)
 768         # Normalize whitespace in title
 769         self.ui.title = string.join(string.split(self.ui.title))
 770         # Check that there were any changes
 771         if self.ui.body == entry.body and self.ui.title == entry.title:
 772             self.error("You didn't make any changes!")
 773             return
 774         # XXX Should lock here
 775         try:
 776             os.unlink(file)
 777         except os.error:
 778             pass
 779         try:
 780             f = open(file, 'w')
 781         except IOError, why:
 782             self.error(CANTWRITE, file=file, why=why)
 783             return
 784         date = time.ctime(now)
 785         emit(FILEHEADER, self.ui, os.environ, date=date, _file=f, _quote=0)
 786         f.write('\n')
 787         f.write(self.ui.body)
 788         f.write('\n')
 789         f.close()
 790
 791         import tempfile
 792         tfn = tempfile.mktemp()
 793         f = open(tfn, 'w')
 794         emit(LOGHEADER, self.ui, os.environ, date=date, _file=f)
 795         f.close()
 796
 797         command = interpolate(
 798             SH_LOCK + '\n' + SH_CHECKIN,
 799             file=file, tfn=tfn)
 800
 801         p = os.popen(command)
 802         output = p.read()
 803         sts = p.close()
 804         # XXX Should unlock here
 805         if not sts:
 806             self.prologue(T_COMMITTED)
 807             emit(COMMITTED)
 808         else:
 809             self.error(T_COMMITFAILED)
 810             emit(COMMITFAILED, sts=sts)
 811         print '<PRE>%s</PRE>' % escape(output)
 812
 813         try:
 814             os.unlink(tfn)
 815         except os.error:
 816             pass
 817
 818         entry = self.dir.open(file)
 819         entry.show()
 820
 821 wiz = FaqWizard()
 822 wiz.go()