small-search-engine/SearchEngine.java at master · neelpy/small-search-engine · GitHub

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public class SearchEngine {
    public InvertedPageIndex ipi = new InvertedPageIndex();
    public void performAction(String actionMessage) {
        //System.out.println(actionMessage);
        String[] action = actionMessage.split("\\s+");
        if(action[0].equals("addPage")) {
            try {
                PageEntry p = new PageEntry(action[1]);
                ipi.addPage(p);
            } catch(Exception e) { System.out.println(e.getMessage()); }
        }
        else if(action[0].equals("queryFindPagesWhichContainWord")) {
            String ans = "";
            String[] punctuation_marks = {"{", "}", "[", "]", "<", ">", "=", "(", ")", ".", ",", ";", "'", "\"", "?", "#", "!", "-", ":"};
            for(int i=0; i<punctuation_marks.length; i++) {
                action[1] = action[1].replace(punctuation_marks[i], "");
            }
            action[1] = action[1].toLowerCase();
            Myset<PageEntry> tempset = ipi.getPagesWhichContainWord(action[1]);
            if(tempset!=null) {
                Node<PageEntry> temp = tempset.set.head;
                while(temp!=null) {
                    ans = ans + temp.data.name + ", ";
                    temp = temp.next;
                }
                System.out.println(ans.substring(0,ans.length()-2));
            } else { System.out.println("No webpage contains word " + action[1]); }
        }
        else if(action[0].equals("queryFindPositionsOfWordInAPage")) {
            String ans = "";
            String[] punctuation_marks = {"{", "}", "[", "]", "<", ">", "=", "(", ")", ".", ",", ";", "'", "\"", "?", "#", "!", "-", ":"};
            for(int i=0; i<punctuation_marks.length; i++) {
                action[1] = action[1].replace(punctuation_marks[i], "");
            }
            action[1] = action[1].toLowerCase();
            Myset<PageEntry> tempset = ipi.getPagesWhichContainWord(action[1]);
            if(tempset!=null) {
                Node<PageEntry> temp = tempset.set.head;
                while(temp!=null) {
                    if(action[2].equals(temp.data.name)) break;
                    temp = temp.next;
                }
                if(temp!=null) {
                    Node<WordEntry> temp2 = temp.data.page_index.pi_set.head;
                    while(temp2!=null) {
                        if(action[1].equals(temp2.data.word)) break;
                        temp2 = temp2.next;
                    }
                    Node<Position> temp3 = temp2.data.word_position.head;
                    while(temp3!=null) {
                        if(action[2].equals(temp3.data.p)) ans = ans + temp3.data.wordIndex + ", ";
                        temp3 = temp3.next;
                    }
                    System.out.println(ans.substring(0,ans.length()-2));
                }
                else { System.out.println("Webpage " + action[2] + " does not contain word " + action[1]); }
            } else { System.out.println("Webpage " + action[2] + " does not contain word " + action[1]); }
        }
    }
}