Reddit2HTML

gistfile1.py

import re

# Engine
class Reddit2HTMLConverter:

    def __init__(self, regPattern, formatStr, formatter):
        self.regPattern = regPattern
        self.formatter = formatter
        self.formatStr = formatStr

    def convert(self, text):
        return self.formatter(self.regPattern, self.formatStr, text)

# Utility
def flatten(seq):
    l = []
    for elt in seq:
        t = type(elt)
        if t is tuple or t is list:
            for elt2 in flatten(elt):
                l.append(elt2)
        else:
            l.append(elt)
    return l

# An example of a formatter method, write your own if you want for customization.
def REPLACE_EVERYTHING(regPattern, formatStr, text):
    delta = 0
    result = text
    for matched in regPattern.finditer(text):
        delta = len(text) - len(result)
        result = result[:matched.start() - delta] + formatStr.format(*matched.groups()) + result[matched.end() - delta:]
    return result

    

linkPattern = re.compile(r'\[(.+?)\]\((.+?)\)')
linkFormat = r'<a href="{1}">{0}</a>'
boldPattern = re.compile(r'\*\*(.+?)\*\*')
boldFormat = r'<strong>{}</strong>'
italicPattern = re.compile(r'\*(.+?)\*')
italicFormat = r'<i>{}</i>'
italicBoldPattern = re.compile(r'\*\*\*(.+)\*\*\*')
italicBoldFormat = r'<i><strong>{}</strong></i>'

# TODO Make list formatter method
# dashListPattern = re.compile('(- .+?\\n)+(- .+?)')
# dashListFormat = ""
# listPattern = re.compile('(\\* .+?\\n)+(\\* .+?)')

header1Pattern = re.compile(r'(?:\n)?# *(.*)(?:\n)?')
header1Format = "<h1>{}</h1>"
header2Pattern = re.compile(r'(?:\n)?## *(.*)(?:\n)?')
header2Format = "<h2>{}</h2>"
header3Pattern = re.compile(r'(?:\n)?### *(.*)(?:\n)?')
header3Format = "<h3>{}</h3>"
header4Pattern = re.compile(r'(?:\n)?#### *(.*)(?:\n)?')
header4Format = "<h4>{}</h4>"

listOConverters = []

linkConverter = Reddit2HTMLConverter(
    linkPattern,
    linkFormat,
    REPLACE_EVERYTHING)
boldConverter = Reddit2HTMLConverter(
    boldPattern,
    boldFormat, 
    REPLACE_EVERYTHING)
italicConverter = Reddit2HTMLConverter(
	italicPattern,
	italicFormat,
	REPLACE_EVERYTHING)
italicBoldConverter = Reddit2HTMLConverter(
	italicBoldPattern,
	italicFormat,
	REPLACE_EVERYTHING)
header1Converter = Reddit2HTMLConverter(
	header1Pattern,
	header1Format,
	REPLACE_EVERYTHING)
header2Converter = Reddit2HTMLConverter(
	header2Pattern,
	header2Format,
	REPLACE_EVERYTHING)
header3Converter = Reddit2HTMLConverter(
	header3Pattern,
	header3Format,
	REPLACE_EVERYTHING)
header4Converter = Reddit2HTMLConverter(
	header4Pattern,
	header4Format,
	REPLACE_EVERYTHING)

listOConverters.append(linkConverter)
listOConverters.append(boldConverter)
listOConverters.append(italicConverter)
listOConverters.append(italicBoldConverter)
listOConverters.append(header1Converter)
listOConverters.append(header2Converter)
listOConverters.append(header3Converter)
listOConverters.append(header4Converter)

if __name__ == "__main__":
    text = open("input.txt", "r").read()
    results = text;

    for converter in listOConverters:
        results = converter.convert(results)

    output = open("output.txt", "w")
    output.write(results)