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/*  Starshatter: The Open Source Project
    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
    Copyright (c) 1997-2006, Destroyer Studios LLC.

     AUTHOR:       John DiCamillo


     OVERVIEW
     ========
     Implementation of the Reader class
*/

#include "Reader.h"
#include <stdio.h>
#include <fstream>
#include <ctype.h>
#include "Utils.h"

// +-------------------------------------------------------------------+

Text
ConsoleReader::more()
{
    // loop until the user types something
    do {
        printPrimaryPrompt();
        fillInputBuffer();
    } while (! *p);

    return Text(p);
}

void
ConsoleReader::printPrimaryPrompt()
{
    printf("- ");
}

void
ConsoleReader::fillInputBuffer()
{
    fgets(buffer, 980, stdin);
    p = buffer;
    while (isspace(*p)) p++;
}

// +-------------------------------------------------------------------+

FileReader::FileReader(const char* fname)
    : filename(fname), done(0)
{ }

Text
FileReader::more()
{
    if (done) return Text();

    std::fstream fin(filename, std::fstream::in);

    if (!fin) {
        Print("ERROR(Parse): Could not open file '%s'\n", filename.data());
        return Text();
    }

    Text result;
    char buf[1000], newline;

    while (fin.get(buf, 1000)) {
        result.append(buf);
        fin.get(newline);
        result.append(newline);
    }

    done = 1;
    return result;
}

// +-------------------------------------------------------------------+

BlockReader::BlockReader(const char* block)
    : data((char*) block), done(0), length(0)
{ }

BlockReader::BlockReader(const char* block, int len)
    : data((char*) block), done(0), length(len)
{ }

Text
BlockReader::more()
{
    if (done) return Text();

    if (length) {
        Text result(data, length);
        done = 1;
        return result;
    }
    else if (data) {
        Text result(data);
        done = 1;
        return result;
    }

    done = 1;
    return Text();
}