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rep2html.py
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rep2html.py
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#!/usr/bin/env python
"""Convert REPs to (X)HTML - courtesy of /F.
Usage: %(PROGRAM)s [options] [<reps> ...]
Options:
-u, --user
python.org username
-b, --browse
After generating the HTML, direct your web browser to view it
(using the Python webbrowser module). If both -i and -b are
given, this will browse the on-line HTML; otherwise it will
browse the local HTML. If no rep arguments are given, this
will browse REP 0.
-i, --install
After generating the HTML, install it and the plaintext source file
(.rst) on python.org. In that case the user's name is used in the scp
and ssh commands, unless "-u username" is given (in which case, it is
used instead). Without -i, -u is ignored.
-l, --local
Same as -i/--install, except install on the local machine. Use this
when logged in to the python.org machine (dinsdale).
-q, --quiet
Turn off verbose messages.
-h, --help
Print this help message and exit.
The optional arguments ``reps`` are either rep numbers or .rst files.
"""
from __future__ import print_function
import sys
import os
import re
import html
import glob
import getopt
import errno
import time
REQUIRES = {'python': '2.2',
'docutils': '0.2.7'}
PROGRAM = sys.argv[0]
RFCURL = 'http://www.faqs.org/rfcs/rfc%d.html'
REPURL = 'rep-%04d.html'
REPGITURL = (
'https://github.com/ros-infrastructure/rep/blob/master/rep-%04d.rst')
REPDIRRUL = 'http://www.ros.org/reps/'
HOST = "wgs32.willowgarage.com" # host for update
HDIR = "/var/www/www.ros.org/html/reps" # target host directory
LOCALVARS = "Local Variables:"
COMMENT = """<!--
This HTML is auto-generated. DO NOT EDIT THIS FILE! If you are writing a new
REP, see https://ros.org/reps/rep-0001.html for instructions and links
to templates. DO NOT USE THIS HTML FILE AS YOUR TEMPLATE!
-->"""
# The generated HTML doesn't validate -- you cannot use <hr> and <h3> inside
# <pre> tags. But if I change that, the result doesn't look very nice...
DTD = ('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"\n'
' "http://www.w3.org/TR/REC-html40/loose.dtd">')
fixpat = re.compile(
r"((https?|ftp):[-_a-zA-Z0-9/.+~:?#$=&,]+)|(rep-\d+(.rst)?)|"
r"(RFC[- ]?(?P<rfcnum>\d+))|"
r"(REP\s+(?P<repnum>\d+))|"
".")
EMPTYSTRING = ''
SPACE = ' '
COMMASPACE = ', '
# Hotpatch docutils as PEP is actually a special module
# inside. Forgive this hack, but docutils does not appear to be
# pluggable.
import docutils.readers
import docutils.writers
import docutils_readers_rep
import docutils_writers_rep
sys.modules['docutils.readers.rep'] = docutils_readers_rep
sys.modules['docutils.writers.rep_html'] = docutils_writers_rep
def usage(code, msg=''):
"""Print usage message and exit. Uses stderr if code != 0."""
if code == 0:
out = sys.stdout
else:
out = sys.stderr
print(__doc__ % globals(), file=out)
if msg:
print(msg, file=out)
sys.exit(code)
def fixanchor(current, match):
text = match.group(0)
link = None
if (text.startswith('http:') or text.startswith('https:') or
text.startswith('ftp:')):
# Strip off trailing punctuation. Pattern taken from faqwiz.
ltext = list(text)
while ltext:
c = ltext.pop()
if c not in '();:,.?\'"<>':
ltext.append(c)
break
link = EMPTYSTRING.join(ltext)
elif text.startswith('rep-') and text != current:
link = os.path.splitext(text)[0] + ".html"
elif text.startswith('REP'):
repnum = int(match.group('repnum'))
link = REPURL % repnum
elif text.startswith('RFC'):
rfcnum = int(match.group('rfcnum'))
link = RFCURL % rfcnum
if link:
return '<a href="%s">%s</a>' % (html.escape(link), html.escape(text))
return html.escape(match.group(0)) # really slow, but it works...
NON_MASKED_EMAILS = [
'ros-users@code.ros.org',
'ros-developers@code.ros.org',
]
def fixemail(address, repno):
if address.lower() in NON_MASKED_EMAILS:
# return hyperlinked version of email address
return linkemail(address, repno)
else:
# return masked version of email address
parts = address.split('@', 1)
return '%s at %s' % (parts[0], parts[1])
def linkemail(address, repno):
parts = address.split('@', 1)
return ('<a href="mailto:%s@%s?subject=REP%%20%s">'
'%s at %s</a>'
% (parts[0], parts[1], repno, parts[0], parts[1]))
def fixfile(inpath, input_lines, outfile):
from email.utils import parseaddr
basename = os.path.basename(inpath)
infile = iter(input_lines)
if 0:
# convert plaintext rep to minimal XHTML markup
print(DTD, file=outfile)
print('<html>', file=outfile)
print(COMMENT, file=outfile)
print('<head>', file=outfile)
# head
header = []
rep = ""
title = ""
for line in infile:
if not line.strip():
break
if line[0].strip():
if ":" not in line:
break
key, value = line.split(":", 1)
value = value.strip()
header.append((key, value))
else:
# continuation line
key, value = header[-1]
value = value + line
header[-1] = key, value
if key.lower() == "title":
title = value
elif key.lower() == "rep":
rep = value
if rep:
title = "REP " + rep + " -- " + title
# remove nav to rep index
f = open('rep-html-template', 'r')
tmpl = f.read()
f.close()
if int(rep) == 0:
tmpl = tmpl.replace(
'[<b><a href="%(repindex)s">REP Index</a></b>]', '')
tmpl_vars = {
'repindex': 'rep-0000.html',
'rep': title,
'repnum': "%04d" % int(rep),
'rephome': '/reps',
'encoding': 'utf-8',
'version': '',
'title': 'REP '+rep+" -- "+title,
'stylesheet': (
'<link rel="stylesheet" href="css/rep.css" type="text/css" />'),
}
real_outfile = outfile
try:
from cStringIO import StringIO
except ImportError:
from io import StringIO
outfile = StringIO()
print("""<div class="header">
<table border="0" class="rfc2822 docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">""", file=outfile)
for k, v in header:
if k.lower() in ('author', 'discussions-to'):
mailtos = []
for part in re.split(r',\s*', v):
if '@' in part:
realname, addr = parseaddr(part)
if k.lower() == 'discussions-to':
m = linkemail(addr, rep)
else:
m = fixemail(addr, rep)
mailtos.append('%s <%s>' % (realname, m))
elif part.startswith('http:'):
mailtos.append(
'<a href="%s">%s</a>' % (part, part))
else:
mailtos.append(part)
v = COMMASPACE.join(mailtos)
elif k.lower() in ('replaces', 'replaced-by', 'requires'):
otherreps = ''
for otherrep in re.split(r',?\s+', v):
otherrep = int(otherrep)
otherreps += '<a href="rep-%04d.html">%i</a> ' % (otherrep,
otherrep)
v = otherreps
elif k.lower() in ('last-modified',):
date = v or time.strftime('%d-%b-%Y',
time.localtime(os.stat(inpath)[8]))
try:
url = REPGITURL % int(rep)
v = '<a href="%s">%s</a> ' % (url, html.escape(date))
except ValueError as error:
v = date
elif k.lower() in ('content-type',):
url = REPURL % 9
rep_type = v or 'text/plain'
v = '<a href="%s">%s</a> ' % (url, html.escape(rep_type))
else:
v = html.escape(v)
print((' <tr class="field"><th class="field-name">%s: </th>' +
'<td class="field-body">%s</td></tr>') %
(html.escape(k), v), file=outfile)
print('</table>', file=outfile)
print('</div>', file=outfile)
print('<hr />', file=outfile)
print('<div class="content">', file=outfile)
need_pre = 1
for line in infile:
if line[0] == '\f':
continue
if line.strip() == LOCALVARS:
break
if line[0].strip():
if not need_pre:
print('</pre>', file=outfile)
print('<h3>%s</h3>' % line.strip(), file=outfile)
need_pre = 1
elif not line.strip() and need_pre:
continue
else:
# REP 0 has some special treatment
if basename == 'rep-0000.rst':
parts = line.split()
if len(parts) > 1 and re.match(r'\s*\d{1,4}', parts[1]):
# This is a REP summary line, which we need to hyperlink
url = REPURL % int(parts[1])
if need_pre:
print('<pre>', file=outfile)
need_pre = 0
print(re.sub(
parts[1],
'<a href="%s">%s</a>' % (url, parts[1]),
line.rstrip(), 1), file=outfile)
continue
elif parts and '@' in parts[-1]:
# This is a rep email address line, so filter it.
url = fixemail(parts[-1], rep)
if need_pre:
print('<pre>', file=outfile)
need_pre = 0
print(re.sub(
parts[-1], url, line.rstrip(), 1), file=outfile)
continue
line = fixpat.sub(lambda x, c=inpath: fixanchor(c, x), line)
if need_pre:
print('<pre>', file=outfile)
need_pre = 0
outfile.write(line)
if not need_pre:
print('</pre>', file=outfile)
print('</div>', file=outfile)
tmpl_vars['body'] = outfile.getvalue()
real_outfile.write((tmpl % tmpl_vars).encode('utf'))
if 0:
print('</body>', file=outfile)
print('</html>', file=outfile)
docutils_settings = None
"""Runtime settings object used by Docutils. Can be set by the client
application when this module is imported."""
def fix_rst_rep(inpath, input_lines, outfile):
from docutils import core
output = core.publish_string(
source=''.join(input_lines),
source_path=inpath,
destination_path=outfile.name,
reader_name='rep',
parser_name='restructuredtext',
writer_name='rep_html',
settings=docutils_settings,
# Allow Docutils traceback if there's an exception:
settings_overrides={'traceback': 1})
outfile.write(output)
def get_rep_type(input_lines):
"""
Return the Content-Type of the input. "text/plain" is the default.
Return ``None`` if the input is not a REP.
"""
rep_type = None
for line in input_lines:
line = line.rstrip().lower()
if not line:
# End of the RFC 2822 header (first blank line).
break
elif line.startswith('content-type: '):
rep_type = line.split()[1] or 'text/plain'
break
elif line.startswith('rep: '):
# Default REP type, used if no explicit content-type specified:
rep_type = 'text/plain'
return rep_type
def get_input_lines(inpath):
try:
infile = open(inpath)
except IOError as e:
if e.errno != errno.ENOENT:
raise
print('Error: Skipping missing REP file:', e.filename, file=sys.stderr)
sys.stderr.flush()
return None
lines = infile.read().splitlines(1) # handles x-platform line endings
infile.close()
return lines
def find_rep(rep_str):
"""Find the .rst file indicated by a cmd line argument."""
if os.path.exists(rep_str):
return rep_str
num = int(rep_str)
return "rep-%04d.rst" % num
def make_html(inpath, verbose=0):
input_lines = get_input_lines(inpath)
if input_lines is None:
return None
rep_type = get_rep_type(input_lines)
if rep_type is None:
print('Error: Input file %s is not a REP.' % inpath, file=sys.stderr)
sys.stdout.flush()
return None
elif rep_type not in REP_TYPE_DISPATCH:
print('Error: Unknown REP type for input file %s: %s' %
(inpath, rep_type), file=sys.stderr)
sys.stdout.flush()
return None
elif REP_TYPE_DISPATCH[rep_type] is None:
rep_type_error(inpath, rep_type)
return None
outpath = os.path.splitext(inpath)[0] + ".html"
if verbose:
print(inpath, "(%s)" % rep_type, "->", outpath)
sys.stdout.flush()
outfile = open(outpath, "wb")
REP_TYPE_DISPATCH[rep_type](inpath, input_lines, outfile)
outfile.close()
os.chmod(outfile.name, 0o664)
return outpath
def push_rep(htmlfiles, rstfiles, username, verbose, local=0):
quiet = ""
if local:
if verbose:
quiet = "-v"
target = HDIR
copy_cmd = "cp"
#chmod_cmd = "chmod"
else:
if not verbose:
quiet = "-q"
if username:
username = username + "@"
target = username + HOST + ":" + HDIR
copy_cmd = "scp"
#chmod_cmd = "ssh %s%s chmod" % (username, HOST)
files = htmlfiles[:]
files.extend(rstfiles)
files.append("css/rep.css")
filelist = SPACE.join(files)
rc = os.system("%s %s %s %s" % (copy_cmd, quiet, filelist, target))
if rc:
sys.exit(rc)
## rc = os.system("%s 664 %s/*" % (chmod_cmd, HDIR))
## if rc:
## sys.exit(rc)
REP_TYPE_DISPATCH = {'text/plain': fixfile,
'text/x-rst': fix_rst_rep}
REP_TYPE_MESSAGES = {}
def check_requirements():
# Check Python:
try:
from email.utils import parseaddr
except ImportError:
REP_TYPE_DISPATCH['text/plain'] = None
REP_TYPE_MESSAGES['text/plain'] = (
'Python %s or better required for "%%(rep_type)s" REP '
'processing; %s present (%%(inpath)s).'
% (REQUIRES['python'], sys.version.split()[0]))
# Check Docutils:
try:
import docutils
except ImportError:
REP_TYPE_DISPATCH['text/x-rst'] = None
REP_TYPE_MESSAGES['text/x-rst'] = (
'Docutils not present for "%(rep_type)s" REP file %(inpath)s. '
'See README.txt for installation.')
else:
installed = [int(part) for part in docutils.__version__.split('.')]
required = [int(part) for part in REQUIRES['docutils'].split('.')]
if installed < required:
REP_TYPE_DISPATCH['text/x-rst'] = None
REP_TYPE_MESSAGES['text/x-rst'] = (
'Docutils must be reinstalled for "%%(rep_type)s" REP '
'processing (%%(inpath)s). Version %s or better required; '
'%s present. See README.txt for installation.'
% (REQUIRES['docutils'], docutils.__version__))
def rep_type_error(inpath, rep_type):
print('Error: ' + REP_TYPE_MESSAGES[rep_type] % locals(), file=sys.stderr)
sys.stdout.flush()
def browse_file(rep):
import webbrowser
file = find_rep(rep)
if file.endswith(".rst"):
file = file[:-3] + "html"
file = os.path.abspath(file)
url = "file:" + file
webbrowser.open(url)
def browse_remote(rep):
import webbrowser
file = find_rep(rep)
if file.endswith(".rst"):
file = file[:-3] + "html"
url = REPDIRRUL + file
webbrowser.open(url)
def main(argv=None):
# defaults
update = 0
local = 0
username = ''
verbose = 1
browse = 0
check_requirements()
if argv is None:
argv = sys.argv[1:]
try:
opts, args = getopt.getopt(
argv, 'bilhqu:',
['browse', 'install', 'local', 'help', 'quiet', 'user='])
except getopt.error as msg:
usage(1, msg)
for opt, arg in opts:
if opt in ('-h', '--help'):
usage(0)
elif opt in ('-i', '--install'):
update = 1
elif opt in ('-l', '--local'):
update = 1
local = 1
elif opt in ('-u', '--user'):
username = arg
elif opt in ('-q', '--quiet'):
verbose = 0
elif opt in ('-b', '--browse'):
browse = 1
if args:
reprst = []
html = []
for rep in args:
file = find_rep(rep)
reprst.append(file)
newfile = make_html(file, verbose=verbose)
if newfile:
html.append(newfile)
if browse and not update:
browse_file(rep)
else:
# do them all
reprst = []
html = []
files = glob.glob("rep-*.rst")
files.sort()
for file in files:
reprst.append(file)
newfile = make_html(file, verbose=verbose)
if newfile:
html.append(newfile)
if browse and not update:
browse_file("0")
if update:
push_rep(html, reprst, username, verbose, local=local)
if browse:
if args:
for rep in args:
browse_remote(rep)
else:
browse_remote("0")
if __name__ == "__main__":
main()