honza/gist.md

## gist.md

      
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              gist.md
            
          
    Haskell vs Clojure

The JSON data is in the following format
{
    "Genesis": {
        "1": {
            "1": "In the beginning..." ,
            "2": "..."
        },
        "2": { ... }
    },
    "Exodus": { ... },
    ...
}

In JSON, keys aren't ordered and must be strings.
The goal is to parse the JSON file, order everything correctly (which means
parsing the keys into integers), and produce an array that looks like this:
[
    ("Genesis", 1, 1, "In the beginning..")
    ("Genesis", 1, 2, "")
]

The data structure can be a tuple or some new type.
Clojure

(ns versify.core
  (:require [cheshire.core :refer :all])
  (:gen-class))

(def book-order ["Genesis", "Exodus", "Leviticus", "Numbers", "Deuteronomy",
    "Joshua", "Judges", "Ruth", "1 Samuel", "2 Samuel", "1 Kings", "2 Kings",
    "1 Chronicles", "2 Chronicles", "Ezra", "Nehemiah", "Esther", "Job",
    "Psalms", "Proverbs", "Ecclesiastes", "Song of Solomon", "Isaiah",
    "Jeremiah", "Lamentations", "Ezekiel", "Daniel", "Hosea", "Joel", "Amos",
    "Obadiah", "Jonah", "Micah", "Nahum", "Habakkuk", "Zephaniah", "Haggai",
    "Zechariah", "Malachi", "Matthew", "Mark", "Luke", "John", "Acts",
    "Romans", "1 Corinthians", "2 Corinthians", "Galatians", "Ephesians",
    "Philippians", "Colossians", "1 Thessalonians", "2 Thessalonians",
    "1 Timothy", "2 Timothy", "Titus", "Philemon", "Hebrews", "James",
    "1 Peter", "2 Peter", "1 John", "2 John", "3 John", "Jude", "Revelation"])

(defn intify [m]
  (apply assoc (sorted-map)
         (mapcat 
           (fn [[k v]]
             [(read-string k), v]) m)))

(defn get-books [bible]
  (map (fn [book] [book, (bible book)]) book-order))

(defn get-chapters [books]
  (mapcat (fn [[k v]]
         (let [i (intify v)]
           (map (fn [[n c]] [k, n, c]) i))) books))

(defn get-verses [verses]
  (mapcat (fn [[b c d]]
            (let [i (intify d)]
              (map (fn [[v t]] [b, c, v, t]) i))) verses))

(def parse (comp get-verses get-chapters get-books))

(defn -main
  [& args]
  (let [bible (parse-string (slurp "ESV.json"))]
    (first (parse bible))))
Haskell

{-# LANGUAGE OverloadedStrings #-}
module Main where

import Prelude hiding (lookup)
import Data.Aeson (decode, FromJSON)
import Data.Maybe (fromMaybe)
import Data.Aeson.Types
import Control.Applicative ((<$>))
import qualified Data.ByteString.Lazy.Char8 as BS
import Data.Map (Map, toList, fromList, lookup)

bookOrder = ["Genesis", "Exodus", "Leviticus", "Numbers", "Deuteronomy",
    "Joshua", "Judges", "Ruth", "1 Samuel", "2 Samuel", "1 Kings", "2 Kings",
    "1 Chronicles", "2 Chronicles", "Ezra", "Nehemiah", "Esther", "Job",
    "Psalms", "Proverbs", "Ecclesiastes", "Song of Solomon", "Isaiah",
    "Jeremiah", "Lamentations", "Ezekiel", "Daniel", "Hosea", "Joel", "Amos",
    "Obadiah", "Jonah", "Micah", "Nahum", "Habakkuk", "Zephaniah", "Haggai",
    "Zechariah", "Malachi", "Matthew", "Mark", "Luke", "John", "Acts",
    "Romans", "1 Corinthians", "2 Corinthians", "Galatians", "Ephesians",
    "Philippians", "Colossians", "1 Thessalonians", "2 Thessalonians",
    "1 Timothy", "2 Timothy", "Titus", "Philemon", "Hebrews", "James",
    "1 Peter", "2 Peter", "1 John", "2 John", "3 John", "Jude", "Revelation"]

type Verse      = String
newtype Chapter = Chapter (Map String Verse) deriving (Show, Eq, Ord)
newtype Book    = Book (Map String Chapter) deriving (Show, Eq, Ord)
newtype Bible   = Bible (Map String Book) deriving (Show, Eq, Ord)

newtype OrderedChapter = OrderedChapter (Map Int Verse) deriving (Show, Eq, Ord)
newtype OrderedBook    = OrderedBook (Map Int OrderedChapter) deriving (Show, Eq, Ord)
newtype OrderedBible   = OrderedBible (Map String OrderedBook) deriving (Show, Eq, Ord)

instance FromJSON Chapter where
    parseJSON val = Chapter <$> parseJSON val

instance FromJSON Book where
    parseJSON val = Book <$> parseJSON val

instance FromJSON Bible where
    parseJSON val = Bible <$> parseJSON val

getBooks :: OrderedBible -> [(String, OrderedBook)]
getBooks (OrderedBible b) = map (f b) bookOrder
    where f b k = (k, (x k b))
          x k b = case (lookup k b) of
                    Just b -> b
                    Nothing -> error "fail"

getChapters :: [(String, OrderedBook)] -> [(String, Int, OrderedChapter)]
getChapters books = concatMap f books
    where f (bookName, (OrderedBook b))              = map (g bookName) (toList b)
          g bookName (chapterNumber, chapter) = (bookName, chapterNumber, chapter)

getVerses :: [(String, Int, OrderedChapter)] -> [FlatVerse]
getVerses chapters = concatMap f chapters
    where f (bookName, chapterNumber, (OrderedChapter chapter)) = map (g bookName chapterNumber) (toList chapter)
          g bookName chapterNumber (verseNumber, verse)  = FlatVerse {
              text = verse,
              book = bookName,
              chapter = chapterNumber,
              verse = verseNumber}

flattenBible :: OrderedBible -> [FlatVerse]
flattenBible = (getVerses . getChapters . getBooks)

data FlatVerse = FlatVerse { text    :: String
                           , book    :: String
                           , chapter :: Int
                           , verse   :: Int
                           } deriving (Show)

formatVerse :: FlatVerse -> String
formatVerse v = "\"" ++ (text v) ++ "\" - " ++ (book v) ++ " "
                ++ show (chapter v) ++ ":" ++ show (book v)

loadBible :: BS.ByteString -> Bible
loadBible x = do
    let y = decode x :: Maybe Bible 
    case y of
        Just b -> b
        Nothing -> error "mle"

getOrderedBible :: Bible -> OrderedBible
getOrderedBible (Bible bible) = OrderedBible (fromList (c bible))
    where c bible     = map (g bible) bookOrder
          g bible key =  (key, (getOrderedBook book)) where
            book = case lookup key bible of
                Just b -> b
                Nothing -> error "fail"

getOrderedBook :: Book -> OrderedBook
getOrderedBook (Book b) = OrderedBook (fromList (map f (toList b)))
    where f (num, chapter) = (read num :: Int, (getOrderedChapter chapter))

getOrderedChapter :: Chapter -> OrderedChapter
getOrderedChapter (Chapter c) = OrderedChapter (fromList (map f (toList c)))
    where f (num, verse) = (read num :: Int, verse)

main = do
    putStrLn "hey"

    bible <- BS.readFile "ESV.json"
    let b = getOrderedBible (loadBible bible)
        f = flattenBible b
    putStrLn $ show $ length f
    putStrLn $ show $ formatVerse (head f)