OSD600- Lab6: Using Blink to check URLs Telescope's latest posts

lab6.diff

diff --git a/src/main/java/com/badalsarkar/App.java b/src/main/java/com/badalsarkar/App.java
index 4b3dca8..ba5c239 100644
--- a/src/main/java/com/badalsarkar/App.java
+++ b/src/main/java/com/badalsarkar/App.java
@@ -1,7 +1,10 @@
 package com.badalsarkar;
 
+import java.io.BufferedReader;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.util.List;
+import java.util.regex.Pattern;
 
 /**
  * Main class.
@@ -33,6 +36,21 @@ public class App {
 				Cli.printVersion(appVersion);
 			}
 			
+			if(Cli.isSet(Cli.in)) {
+				configureUrlPrinter();
+				try(BufferedReader reader = new BufferedReader(new InputStreamReader(System.in))){
+					while(true) {
+						String text = null;
+						if((text = reader.readLine())!= null) {
+							Checker.check(Extractor.extractUrlFromText(text, Pattern.compile(pattern)), urlPrinter);
+						}
+						else {
+							break;
+						}
+					}
+				}
+				System.exit(0);
+			}
 			if(Cli.isSet(Cli.source)) {
 				configureUrlPrinter();
 				processFile(Cli.getCliOptionArgValue(Cli.source), Cli.getCliOptionArgValue(Cli.destination), urlPrinter);
diff --git a/src/main/java/com/badalsarkar/Cli.java b/src/main/java/com/badalsarkar/Cli.java
index fdf0c47..ae53d09 100644
--- a/src/main/java/com/badalsarkar/Cli.java
+++ b/src/main/java/com/badalsarkar/Cli.java
@@ -18,6 +18,7 @@ public final class Cli {
 	public static final CliOption all;
 	public static final CliOption good;
 	public static final CliOption bad;
+	public static final CliOption in;
 
 	static {
 		help = new CliOption("h", "help", "Show app usage help.");
@@ -28,6 +29,7 @@ public final class Cli {
 		all = new CliOption("a", "all", "Print all URLS.");
 		good = new CliOption("g", "good", "Print only good URL.");
 		bad = new CliOption("b", "bad", "Print only bad URLs.");
+		in = new CliOption("i", "in", "Accept text input from standard input");
 	}
 
 	/**
@@ -46,6 +48,7 @@ public final class Cli {
 
 		cliParser.registerCliOption(help);
 		cliParser.registerCliOption(version);
+		cliParser.registerCliOption(in);
 		cliParser.defineCliOptionWithArgument(source);
 		cliParser.defineCliOptionWithArgument(destination);
 		/*
diff --git a/src/main/java/com/badalsarkar/Extractor.java b/src/main/java/com/badalsarkar/Extractor.java
new file mode 100644
index 0000000..6073dc8
--- /dev/null
+++ b/src/main/java/com/badalsarkar/Extractor.java
@@ -0,0 +1,22 @@
+package com.badalsarkar;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class Extractor {
+	
+	public static List<String> extractUrlFromText(String text, Pattern pattern){
+		int startPos = 0;
+		int endPos = 0;
+		List<String> url = new ArrayList<String>();
+		Matcher matcher = pattern.matcher(text);
+		while (matcher.find()) {
+			startPos = matcher.start();
+			endPos = matcher.end();
+			url.add(text.substring(startPos, endPos));
+		}
+		return url;
+	}
+}

telescopeUrlCheck.sh

#!/usr/bin/env bash

if ! command -v jq &> /dev/null
then
    echo "JQ is not installed."
    echo "Please install jq by sudo apt install jq."
    exit
fi

if [ ! -f ./Blink.jar ]; then
    echo "Could not find Blink. Download from https://github.com/badalsarkar/Blink"
    exit
fi

telescopeLatestPostApi=http://localhost:3000/posts
data=$(curl -s $telescopeLatestPostApi | jq '.[] | .id')
for i in $data;
do
    i="${i%\"}"
    i="${i#\"}"
    echo 
    echo ====================================================
    echo Checking $telescopeLatestPostApi/$i
    echo ====================================================
    echo 
    curl -s $telescopeLatestPostApi/$i | java -jar ./Blink.jar -i
done