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MarkdownParse.java
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MarkdownParse.java
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//https://howtodoinjava.com/java/io/java-read-file-to-string-examples/
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
public class MarkdownParse {
public static ArrayList<String> getLinks(String markdown) {
ArrayList<String> toReturn = new ArrayList<>();
// find the next [, then find the ], then find the (, then read link upto next )
int currentIndex = 0;
while(currentIndex < markdown.length()) {
//System.out.println(currentIndex);
// fixed empty lines and non-links
if (markdown.indexOf(")", currentIndex) == -1 ||
markdown.indexOf("]", currentIndex) == -1 ||
markdown.indexOf("(", currentIndex) == -1 ||
markdown.indexOf("[", currentIndex) == -1) {
break;
}
int openBracket = markdown.indexOf("[", currentIndex);
int closeBracket = markdown.indexOf("]", openBracket);
int openParen = markdown.indexOf("(", closeBracket);
int closeParen = markdown.indexOf(")", openParen);
// fixed image being read as a link
// fixed distance between [] and ()
//System.out.println(openBracket);
//System.out.println(markdown.substring(openParen + 1, closeParen));
if ((markdown.indexOf("!", currentIndex) == openBracket - 1 &&
openBracket != 0)) {
currentIndex = closeParen;
continue;
}
// fixing inline backticks
// if (markdown.indexOf("`", currentIndex) == openBracket - 1 ||
// markdown.indexOf("`", closeBracket) == closeBracket + 1) {
// for (int i = currentIndex + 1; i < closeBracket; i++) {
// if (markdown.charAt(i) == '`') {
// currentIndex = closeParen;
// break;
// }
// }
// continue;
// }
// fixing nested parenthesis
while (markdown.charAt(closeParen + 1) == ')') {
closeParen++;
}
// fix line breaks
// String newline = System.getProperty("line.separator");
// if (markdown.substring(openBracket, closeBracket).contains(newline) ||
// markdown.substring(openParen, closeParen).contains(newline)) {
// currentIndex = closeParen;
// continue;
// }
// making a change on remote server
//System.out.println("adding");
toReturn.add(markdown.substring(openParen + 1, closeParen));
currentIndex = closeParen + 1;
}
return toReturn;
}
public static void main(String[] args) throws IOException {
//System.out.println("Here are the links found in " + args[0] + ":");
Path fileName = Path.of(args[0]);
String content = Files.readString(fileName);
ArrayList<String> links = getLinks(content);
System.out.println(links);
}
}