#!/usr/bin/env python3
"""
A Python script to generate a single PDF document with all the `tldr` pages. It works by generating
intermediate HTML files from existing md files using Python-markdown, applying desired formatting
through CSS, and finally rendering them as PDF. There is no LaTeX dependency for generating the PDF.
"""
import os
import sys
import glob
import re
import markdown
import argparse
from datetime import datetime
from weasyprint import HTML
def main(loc, colorscheme):
oslist = []
allmd = []
group = []
ap = []
# Checking correctness of path
if not os.path.isdir(loc):
print("Invalid directory. Please try again!", file=sys.stderr)
sys.exit(1)
# Writing names of all directories inside 'pages' to a list
for os_dir in os.listdir(loc):
oslist.append(os_dir)
oslist.sort()
# Required strings to create intermediate HTML files
header = '<!doctype html><html><head><meta charset="utf-8"><link rel="stylesheet" href="basic.css">'
if colorscheme != "basic":
header += '<link rel="stylesheet" href="' + colorscheme + '.css"></head><body>\n'
header += "</head><body>\n"
footer = "</body></html>"
title_content = "<h1 class=title-main>tldr pages</h1>" \
+ "<h4 class=title-sub>Simplified and community-driven man pages</h4>" \
+ "<h6 class=title-sub><em><small>Generated on " + datetime.now().strftime("%c") + "</small></em></h6>" \
+ "</body></html>"
# Creating title page
with open("title.html", "w") as f:
f.write(header + title_content)
group.append(HTML("title.html").render())
for operating_sys in oslist:
# Required string to create directory title pages
dir_title = "<h2 class=title-dir>" + \
operating_sys.capitalize() + "</h2></body></html>"
# Creating directory title page for current directory
with open("dir_title.html", "w") as os_html:
os_html.write(header + dir_title)
group.append(HTML("dir_title.html").render())
# Creating a list of all md files in the current directory
for temp in glob.glob(os.path.join(loc, operating_sys, "*.md")):
allmd.append(temp)
# Sorting all filenames in the directory, to maintain the order of the PDF
allmd.sort()
# Conversion of Markdown to HTML
for page_number, md in enumerate(allmd, start=1):
with open(md, "r") as inp:
text = inp.readlines()
with open("htmlout.html", "w") as out:
out.write(header)
for line in text:
if re.match(r'^>', line):
line = line[:0] + '####' + line[1:]
html = markdown.markdown(line)
out.write(html)
out.write(footer)
group.append(HTML("htmlout.html").render())
print("Rendered page {} of the directory {}".format(
str(page_number), operating_sys))
allmd.clear()
# Merging all the documents into a single PDF
for doc in group:
for p in doc.pages:
ap.append(p)
# Writing the PDF to disk, preserving metadata of first `tldr` page
group[2].copy(ap).write_pdf('tldr-pages.pdf')
if os.path.exists("tldr-pages.pdf"):
print("\nCreated tldr-pages.pdf in the current directory!\n")
# Removing unnecessary intermediate files
try:
os.remove("htmlout.html")
os.remove("title.html")
os.remove("dir_title.html")
except OSError:
print("Error removing temporary file(s)")
if __name__ == "__main__":
# Parsing the arguments
parser = argparse.ArgumentParser(prog="tldr-pages-to-pdf", description="A Python script to generate a single PDF document with all the `tldr` pages.")
parser.add_argument("dir_path", help = "Path to the 'pages' directory")
parser.add_argument("-c", "--color", choices=["solarized-light", "solarized-dark", "basic"], default="basic", help="Color scheme of the PDF")
args = parser.parse_args()
main(args.dir_path, args.color)