From 583ecf2df556c0bb3ae5468a63d9231b3ef56f58 Mon Sep 17 00:00:00 2001
From: ArghKevin <kagheli@student.sdccd.edu>
Date: Mon, 20 May 2024 05:42:37 -0700
Subject: Weeks 5 and 6.

---
 src/CSVReader.java | 35 ++++++++++++++++++++++++++++-------
 1 file changed, 28 insertions(+), 7 deletions(-)

(limited to 'src/CSVReader.java')

diff --git a/src/CSVReader.java b/src/CSVReader.java
index fa588ef..3666531 100644
--- a/src/CSVReader.java
+++ b/src/CSVReader.java
@@ -17,14 +17,15 @@ import java.util.Arrays;
  */
 
 public class CSVReader extends Reader {
-	String[] header; // A CSV file has-a header. One line, multiple fields.
-	/* Array of Hash map from header to value for each
-	line past the header. */
-	ArrayList<HashMap<String,String>> body; // A CSV file has-a body. Multiple lines, multiple fields.
+	private String[] header; // A CSV file has-a header. One line, multiple fields.
+	// Array of HashMaps. Headers are keys, values are on each line of the CSV following the header.
+	private ArrayList<HashMap<String,String>> body; // A CSV file has-a body. Multiple lines, multiple fields.
 
 	public CSVReader(File file) {
 		super(file); // Call parent constructor
+		/* Construct the body to be filled. */
 		body = new ArrayList<HashMap<String,String>>();
+		/* Parse the contents of the file, store in body. */
 		parse();
 	}
 
@@ -32,26 +33,46 @@ public class CSVReader extends Reader {
 	 * Parse CSV file.
 	 */
 	public void parse() {
+		/* Split the input on newlines. */
 		String[] lines = this.getContents().split("\n");
+		/* Split the first line by commas, assign to header array. */
 		this.header = lines[0].split(",");
 
-		/* Iterate over all lines of the body. */
+		/* Iterate over all lines of the body.
+		First line is header, count from 1 instead of 0. */
 		for (int i = 1; i < lines.length; i++) {
+			/* Some lines have commas within parentheses.
+			Angkor,"/South East Asian (Thai, Khmer, Lao)/Looped",100
+			Remove everything within parentheses. We need to escape
+			not on a language level, but on a function call level.
+			Double-backslash for a literal backslash, which is then
+			used to escape the parentheses in the regex library. */
+			lines[i] = lines[i].replaceAll("\\(.*\\)", "");
+
+			/* CSV, Comma-Separated Values. */
 			String[] fields = lines[i].split(",");
+			/* Allocate a new HashMap for the given line of the CSV. */
 			HashMap<String,String> map = new HashMap<String,String>();
-			/* For each of the columns, add the associated
-			value in this row. */
+
+			/* Associate each of the line's fields with its header. */
 			for (int j = 0; j < header.length; j++) {
 				map.put(header[j], fields[j]);
 			}
+			/* Add the HashMap to the list. */
 			body.add(map);
 		}
 	}
 	
+	/**
+	 * @return the length of the body.
+	 */
 	public int getLength() {
 		return body.size();
 	}
 	
+	/**
+	 * @return the value associated with the given key on the given line.
+	 */
 	public String get(int i, String key) {
 		return body.get(i).get(key);
 	}
-- 
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