#!/usr/bin/python3
import sys, os, re, markdown
from datetime import datetime
def readlines(fd):
"""Read lines from file discarding comments at beginning"""
lines = []
for line in fd:
if not lines and re.match("^ *%", line):
continue # skip comments at beginning of file
lines.append(line)
return lines
g = re.match(r'^(.*)\.md',sys.argv[1])
if not g:
print("Must give markdown file (.md extension) as input. Got '%s'" % sys.argv[1], file=sys.stderr)
sys.exit(1)
base_name = g.group(1)
with open(sys.argv[1],"r") as fd:
html = markdown.markdown("\n".join(readlines(fd)))
with open(base_name+".html","w") as fw:
print("""
{date}
""",file=fw)
def make_text(email_target, base_name):
manual_breaks = email_target
textwidth = 72 # maxium allowed length including indentation
url = "https://einsteintoolkit.org/about/releases/%s.html" % os.path.basename(base_name)
if(email_target):
fwn = base_name + ".email.txt"
indentby = 2
else:
fwn = base_name + ".txt"
indentby = 0
with open(fwn, "w") as fw:
with open(base_name + ".md", "r", encoding='ascii') as fd:
lines = readlines(fd)
if email_target:
# insert a "Click here to see this online" link after title
for i in range(len(lines)):
if(re.match(r'^# ', lines[i])):
lines.insert(i+1, '\n')
lines.insert(i+2, 'Click here to read the announcement in HTML (with hyperlinks):\n')
lines.insert(i+3, '%s\n' % url)
break
for line in lines:
line = line.strip()
# Ensure there are no weird characters
n = 0
for ch in line:
assert re.match(r'^[=$\+\&`\[\]\(\)\{\}@;,?\./" \t\w:\*\#\'%-]+$',ch), line[0:n]+"<"+ch+":"+str(ord(ch))+">"+line[n+1:]
n += 1
if len(line) == 0:
indent = 0
linewidth = textwidth
elif line[0] == '+':
indent = 3
linewidth = textwidth - (indentby*indent+1)
elif line[0] == '-':
indent = 2
linewidth = textwidth - (indentby*indent+1)
elif line[0] == '*':
indent = 1
linewidth = textwidth - (indentby*indent+1)
else:
indent = 0
linewidth = textwidth
line = re.sub(r'\[([^\]]*)\]\(([^\)]*)\)',r'\1',line)
line = re.sub(r'^#+\s+','',line)
line = re.sub(r'`([^`\s]*)`',r'\1',line)
sp = ' '*(indentby*indent-1)
if line == '' or not manual_breaks:
print(sp,line,sep='',file=fw)
continue
# The regular expression {0,N} greedily looks
# for matches of at most N characters.
while True:
g = re.match(r'(.{1,%d})(\s+|$)' % (linewidth-len(sp)), line)
if not g:
break
segment = g.group(0)
line = line[g.end(0):]
# Don't generate an extra newline for
# the last blank pattern match.
if segment == '':
break
# A list gets a different indentation
# on the continuation line because we
# want to indent past the bullet.
print(sp, segment.rstrip(), sep='', file=fw)
if indent > 0:
sp = ' '*(indentby*indent+1)
make_text(email_target=False, base_name=base_name)
make_text(email_target=True, base_name=base_name)