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import re
import urlparse
from cherrypy.lib.tidy import html_break
from web.lib.links import viewcvs_link, \
bugzilla_bug_link, \
ciavc_link
# We use short variable names!
# pylint: disable-msg=C0103
re_author = re.compile(r' 20[01]\d; ([^<]+)? *<([^@> ]+)@[^>]')
re_author2 = re.compile(r' <?([^<@ ]+)@')
def extract_changelog_entry_author(line):
"""From the first line of a changelog entry,
extract the author name and userid"""
authorname = authorid = None
authorsearch = re_author.search(line)
if authorsearch is not None:
if authorsearch.group(1):
authorname = authorsearch.group(1).strip()
if authorsearch.group(2):
authorid = authorsearch.group(2).strip()
else:
authorname = 'Unknown'
authorid = ''
# try harder to find an username only
authorsearch = re_author2.search(line)
if authorsearch is not None and authorsearch.group(1):
authorid = authorsearch.group(1).strip()
return (authorname, authorid)
def _single_pass_re_loop(reo, callback, instr):
"""For every match of the given regex, replace the entire match
with the string given by callback.
Callback takes the re.match object."""
for m in reo.finditer(instr):
#while True:
#m = reo.search(instr)
if m is None:
break
repl = callback(m)
instr = instr.replace(m.group(0), repl)
return instr
re_email1 = re.compile(r'<([^@ ]+)@gentoo.org>')
re_email2 = re.compile(r'([^@ ]+)@gentoo.org')
re_file = re.compile(r'([\+-]?)(\S+)([:,]|[:,]$)')
re_bugid = re.compile(r'([Bb][uU][gG]\s+?#?)(\d+)')
re_url_base = '(https?://[^\s/)>]+(?:/[\S]+)?)'
re_url = re.compile("([\s<(]*)"+re_url_base+"([\s>)\"']+?.?|$)?")
re_url_notend = re.compile(r'[\s.)>\'"]+$')
def _pretty_changelog_pass1(cat, pn, changelog):
"""Changelog prettification, pass1: replace text with markers"""
changelog = changelog.strip()
changelog_lines = changelog.splitlines()
i = 0
while changelog_lines is not None and \
len(changelog_lines) > i and \
changelog_lines[i] is not None and \
changelog_lines[i].startswith('*'):
i += 1
seen_files = False
seen_author = False
authorname = None
authorid = None
while True and len(changelog_lines) > i:
oldline = changelog_lines[i]
line = oldline.split()
newline = []
if not seen_author or not seen_files:
for w in line:
if not seen_author and '@gentoo.org' in w:
(authorname, authorid) = \
extract_changelog_entry_author(oldline)
if authorid == '':
print 'Bad changelog entry for %s/%s = "%r"' \
% (cat, pn, changelog)
w = re_email1.sub('__CIA_VC__\\1__/CIA_VC__', w)
w = re_email2.sub(' __CIA_VC__\\1__/CIA_VC__', w)
seen_author = True
elif not seen_files and seen_author:
w = re_file.sub('\\1__FILE__\\2__/FILE__\\3', w)
newline.append(w)
changelog_lines[i] = ' '.join(newline)
else:
# re.IGNORECASE does not work on Unicode strings in 2.4!
newline = oldline
def bug_markup(m):
return '%s__BUG__%s__/BUG__' % (m.group(1), m.group(2))
newline = _single_pass_re_loop(re_bugid, bug_markup, newline)
def url_markup(m):
prefix = m.group(1)
url = m.group(2)
suffix = m.group(3)
if prefix is None:
prefix = ''
if suffix is None:
suffix = ''
extra_suffix = re_url_notend.search(url)
if extra_suffix:
extra_suffix = extra_suffix.group(0)
suffix = extra_suffix + suffix
url = url[0:-len(extra_suffix)]
return '%s__URL__%s__/URL__%s' % (prefix, url, suffix)
newline = _single_pass_re_loop(re_url, url_markup, newline)
changelog_lines[i] = newline
if oldline.endswith(':'):
seen_files = True
i += 1
changelog = "\n".join(changelog_lines)
changelog.strip()
if len(changelog) == 0:
changelog = "No changelog entry available"
return (changelog, authorname, authorid)
def _pretty_changelog_pass2(changelog):
"""Now convert remaining stuff to be HTML. This catches all
lurking entities as well as \\n"""
changelog = html_break(changelog)
return changelog
re_m_ciavc = re.compile(r'__CIA_VC__(\S+)__/CIA_VC__ ?')
def _pretty_changelog_pass3(changelog):
"""Convert author markup to CIA.vc links"""
def markup(m):
user = m.group(1)
url = ciavc_link(user)
return '(<a href="%s">%s</a>) ' % (url, user)
changelog = _single_pass_re_loop(re_m_ciavc, markup, changelog)
return changelog
re_m_file = re.compile(r'__FILE__(\S+)__/FILE__')
def _pretty_changelog_pass4(cat, pn, changelog):
"""Convert any file markup entries to Gentoo ViewCVS links"""
def markup(m):
filename = m.group(1)
relpath = '%s/%s/%s' % (cat, pn, filename)
url = viewcvs_link(relpath)
return '<a href="%s">%s</a>' % (url, filename)
changelog = _single_pass_re_loop(re_m_file, markup, changelog)
return changelog
re_m_bug = re.compile(r'__BUG__(\d+)__/BUG__')
def _pretty_changelog_pass5(changelog):
"""Convert any bug id markup to bugzilla links"""
def markup(m):
bugid = m.group(1)
url = bugzilla_bug_link(int(bugid))
return '<a href="%s">%s</a>' % (url, bugid)
changelog = _single_pass_re_loop(re_m_bug, markup, changelog)
return changelog
re_m_url = re.compile(r'__URL__(\S+)__/URL__')
def _pretty_changelog_pass6(changelog):
"""Convert any URL markup to real links"""
def markup(m):
group = m.group(1)
url = urlparse.urlparse(group)
if not url.scheme:
url = 'http://' + m.group(1)
else:
url = group
return '<a href="%s">%s</a>' % (url, url)
changelog = _single_pass_re_loop(re_m_url, markup, changelog)
return changelog
def pretty_changelog(cat, pn, changelog):
"""Given a changelog snippet, make it look nice with HTML:
- Make the body HTML-safe via entities.
- Replace the author email with a CIA.vc link
- Link the changed files to ViewCVS
- Link any bug# entries to Bugzilla"""
# text -> markup
(changelog, authorname, authorid) = \
_pretty_changelog_pass1(cat, pn, changelog)
# entities -> HTML
changelog = _pretty_changelog_pass2(changelog)
# user markup -> CIA.vc
changelog = _pretty_changelog_pass3(changelog)
# file markup -> sources.g.o link
changelog = _pretty_changelog_pass4(cat, pn, changelog)
# bug markup -> bugzilla link
changelog = _pretty_changelog_pass5(changelog)
# url markup -> real link
changelog = _pretty_changelog_pass6(changelog)
# Done!
return (changelog, authorname, authorid)
def optimal_collapse(atom, pnlength, pvlength, ellipsis = '^'):
"""Shrink the PN-PV string using well-placed ellipsis characters so
that the maximum length of the string does not exceed the sum of
the max specified PN and PV lengths. Retain the maximum amount of
information."""
# TP[PN] = target length
maxlength = pnlength + pvlength + 1
npn = pn = atom.package
npv = pv = atom.fullver
sep = '-'
if atom.fullver is None:
npv = pv = ''
sep = ''
tlpn = len(pn)
tlpv = len(pv)
pnpv = "%s%s%s" % (npn, sep, npv)
i = 0
while len(pnpv) > maxlength and i < 25:
if tlpv > pvlength:
tlpv -= 1
npv = pv[0:tlpv-1] + '@'
elif tlpn > pnlength:
tlpn -= 1
npn = pn[0:tlpn-1] + '@'
pnpv = "%s%s%s" % (npn, sep, npv)
i += 1
return pnpv.replace('@', ellipsis)
# vim:ts=4 et ft=python:
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