coursenotes2url.py

gistfile1.txt

#!/usr/bin/env python                                                                              
import argparse

URL_TEMPLATE = "http://computationstructures.org/notes/%s/notes.html#TARGET_"

# takes a section number like 6.5.4 and converts it to a URL                                       
def section_to_url(chapter, section):
    lookup = {
        '3': "information",
        '4': "circuits",
        '5': "digitalabstraction",
        '6': "cmos",
        '7': "combinational_logic",
        '8': "sequential_logic",
        '9': "fsms",
        '10': "arbitration",
        '11': "performance",
        '12': "tradeoffs",
    }

    if chapter not in lookup:
        raise Exception("Couldn't find this chapter: " + chapter)

    chapterName = lookup[chapter]

    return (URL_TEMPLATE % chapterName) + section


def chapter_from_section(section):
    section = section.strip()
    parts = section.split(".")
    return parts[0]

def main():
    parser = argparse.ArgumentParser(
        description=
        "Get the URL that corresponds to a 6.004[x] Computation Structures \                       
        section number, such as '6.4.3'")
    parser.add_argument('section', type=str)
    args = parser.parse_args()

    chapter = chapter_from_section(args.section)
    url = section_to_url(chapter, args.section)
    print url

if __name__ == "__main__":
    main()

$ chmod +x ./coursenotes2url.py

usage is like:
$ ./coursenotes2url.py 11.5.1
output is:
http://computationstructures.org/notes/performance/notes.html#TARGET_11.5.1