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#!/usr/bin/env python3
import re
import sys
from subprocess import *
from string import Template
if len(sys.argv) == 2:
specformat = sys.argv[1]
if not (specformat in ["html", "markdown"]):
sys.stderr.write("Format must be html or markdown\n")
exit(1)
else:
sys.stderr.write("Usage: makespec.py [html|markdown]\n")
exit(1)
def toIdentifier(s):
return re.sub(r'\s+', '-', re.sub(r'\W+', ' ', s.strip().lower()))
def parseYaml(yaml):
metadata = {}
def parseField(match):
key = match.group(1)
val = match.group(2).strip()
if re.match(r'^\'', val):
val = val[1:len(val) - 1]
metadata[key] = val
fieldre = re.compile('^(\w+):(.*)$', re.MULTILINE)
re.sub(fieldre, parseField, yaml)
return metadata
def pipe_through_prog(prog, text):
p1 = Popen(prog.split(), stdout=PIPE, stdin=PIPE, stderr=PIPE)
[result, err] = p1.communicate(input=text.encode('utf-8'))
return [p1.returncode, result.decode('utf-8'), err]
def replaceAnchor(match):
refs.append("[{0}]: #{1}".format(match.group(1), match.group(2)))
if specformat == "html":
return '<a id="{1}" href="#{1}" class="definition">{0}</a>'.format(match.group(1), match.group(2))
else:
return match.group(0)
stage = 0
example = 0
section = ""
sections = []
mdlines = []
refs = []
lastnum = []
finishedMeta = False
yamllines = []
with open('spec.txt', 'r', encoding='utf-8') as spec:
for ln in spec:
if not finishedMeta:
yamllines.append(ln)
if re.match(r'^\.\.\.$', ln):
finishedMeta = True
elif re.match(r'^\.$', ln):
if stage == 0:
example += 1
mdlines.append("\n<div class=\"example\" id=\"example-{0}\" data-section=\"{1}\">\n".format(example, section))
mdlines.append("<div class=\"examplenum\"><a href=\"#example-{0}\">Example {0}</a> <a class=\"dingus\" title=\"open in interactive dingus\">(interact)</a></div>\n\n".format(example))
mdlines.append("````````````````````````````````````````````````````````` markdown\n")
stage = 1
elif stage == 1:
mdlines.append("`````````````````````````````````````````````````````````\n\n")
mdlines.append("````````````````````````````````````````````````````````` html\n")
stage = 2
elif stage == 2:
mdlines.append("`````````````````````````````````````````````````````````\n\n")
mdlines.append("</div>\n")
stage = 0
else:
sys.stderr.out("Encountered unknown stage {0}\n".format(stage))
sys.exit(1)
else:
if stage == 0:
match = re.match(r'^(#{1,6}) *(.*)', ln)
if match:
section = match.group(2)
lastlevel = len(lastnum)
level = len(match.group(1))
if re.search(r'{-}$', section):
section = re.sub(r' *{-} *$', '', section)
if specformat == 'html':
ln = re.sub(r' *{-} *$', '', ln)
number = ''
else:
if lastlevel == level:
lastnum[level - 1] = lastnum[level - 1] + 1
elif lastlevel < level:
while len(lastnum) < level:
lastnum.append(1)
else: # lastlevel > level
lastnum = lastnum[0:level]
lastnum[level - 1] = lastnum[level - 1] + 1
number = '.'.join([str(x) for x in lastnum])
ident = toIdentifier(section)
ln = re.sub(r' ', ' ' + number + ' ', ln, count=1)
sections.append(dict(level=level,
contents=section,
ident=ident,
number=number))
refs.append("[{0}]: #{1}".format(section, ident))
ln = re.sub(r'# +', '# <a id="{0}"></a> '.format(ident),
ln, count=1)
else:
ln = re.sub(r'\[([^]]*)\]\(@([^)]*)\)', replaceAnchor, ln)
else:
ln = re.sub(r' ', '␣', ln)
mdlines.append(ln)
mdtext = ''.join(mdlines) + '\n\n' + '\n'.join(refs) + '\n'
yaml = ''.join(yamllines)
metadata = parseYaml(yaml)
if specformat == "markdown":
sys.stdout.write(yaml + '\n\n' + mdtext)
elif specformat == "html":
with open("template.html", "r", encoding="utf-8") as templatefile:
template = Template(templatefile.read())
toclines = []
for section in sections:
indent = ' ' * (section['level'] - 1)
toclines.append(indent + '* [' + section['number'] + ' ' +
section['contents'] + '](#' + section['ident'] + ')')
toc = '<div id="TOC">\n\n' + '\n'.join(toclines) + '\n\n</div>\n\n'
prog = "build/src/cmark"
[retcode, result, err] = pipe_through_prog(prog, toc + mdtext)
if retcode == 0:
result = re.sub(r'␣', '<span class="space"> </span>', result)
result = re.sub(r'<h([1-6])><a id="([^\"]*)"><\/a> ',
"<h\\1 id=\"\\2\">", result)
# put plural s inside links for better visuals:
result = re.sub(r'<\/a>s', "s</a>", result)
sys.stdout.write(template.substitute(metadata, body=result))
# check for errors:
idents = []
for ident in re.findall(r'id="([^"]*)"', result):
if ident in idents:
sys.stderr.write("WARNING: duplicate identifier '" + ident +
"'\n")
else:
idents.append(ident)
for href in re.findall(r'href="#([^"]*)"', result):
if not (href in idents):
sys.stderr.write("WARNING: internal link with no anchor '" +
href + "'\n")
reftexts = []
for ref in refs:
ref = re.sub('].*',']',ref).upper()
if ref in reftexts:
sys.stderr.write("WARNING: duplicate reference link '" +
ref + "'\n")
else:
reftexts.append(ref)
else:
sys.stderr.write("Error converting markdown version of spec:\n")
sys.stderr.write(err)
exit(1)
exit(0)
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