<?php

require_once("misc.php");

/* Transaction management for plain text */

function load_transaction() {
  global $transaction;
  global $trans;
  global $yearmonth;

  $file = $transaction . $yearmonth;
  if ((!file_exists ($file)) || (!lock($file)) ||
      (!($f = fopen ($file, 'r'))))
    return 0;

  while (!feof($f)) {
    list($id, $day, $accid, $catid, $amount, $desc) = 
      explode (" ", rtrim(fgets($f, 1024)), 6);
    if (!$id) continue;
    $trans[] = array("id" => $id, "day" => $day, "accid" => $accid,
		     "catid" => $catid, "amount" => $amount,
		     "description" => $desc);
  }
  fclose($f);
  unlock($file);

  return 1;
}

function store_transaction() {
  global $transaction;
  global $trans;
  global $yearmonth;

  $file = $transaction . $yearmonth;
  if  ((!lock($file)) || (!($f = fopen($file, 'w'))))
    return 0;

  foreach ($trans as $t)
    fputs ($f, $t["id"]." ".$t["day"]." ".$t["accid"]." ".$t["catid"]." ".
	   $t["amount"]." ".$t["description"]."\n");
  fclose($f);
  unlock($file);

  return 1;
}


function copy_transaction($day, $accid, $catid, $amount, $desc, $myearmonth) {
  global $transaction;
  global $trans;
  global $yearmonth;

  $file = $transaction . $myearmonth;
  if  (!lock($file))
    return 0;

  $id = 0;
  if ($f = fopen($file, 'r')) {

    while (!feof($f)) {
      list($_id, $_day, $_accid, $_catid, $_amount, $_desc) = 
	explode (" ", rtrim(fgets($f, 1024)), 6);
      if (!$_id) continue;
      $id = $_id;
    }
    fclose($f);
  }
  $id++;

  if (!($f = fopen($file, 'a')))
    return 0;

  fputs ($f, $id." ".$day." ".$accid." ".$catid." ".$amount." ".$desc."\n");
  fclose($f);

  unlock($file);

  return 1;
}

/* Initialization */

$transaction = $transactiondir . $table . ".";

load_transaction();

?>