science-ation/ltxt.php

<?

/*
 * This file is part of the 'Science Fair In A Box' project
 * SFIAB Website: http://www.sfiab.ca
 *
 * Copyright (C) 2005 Sci-Tech Ontario Inc <info@scitechontario.org>
 * Copyright (C) 2005 James Grant <james@lightbox.org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation, version 2.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
?>
<?
class ltxt
{
	var $txtdata;
	var $str_separator;
	var $str_newline;
	var $page_subheader;

	function separator()
	{
		return $this->str_separator;
	}

	function setSeparator($s)
	{
		$this->str_separator = $s;
	}

	function newline()
	{
		return $this->str_newline;
	}

	function setNewline($s)
	{
		$this->str_newline = $s;
	}

	function centerText($text, $width)
	{
		// FIXME, there must be an easier way of doing this,
		// probably with printf :)
		$t = '';
		$space = $width - strlen($text);
		$w2 = floor($space / 2);
		for ($x = 0; $x < $w2; $x++)
			$t .= ' ';
		$t .= $text;
		$w2 = $space - $w2;
		for ($x = 0; $x < $w2; $x++)
			$t .= ' ';
		return $t;
	}

	function leftText($text, $width)
	{
		$t = '';
		$t .= $text;
		for ($x = strlen($text); $x < $width; $x++)
			$t .= ' ';
		return $t;
	}

	function dashText($width)
	{
		$t = '';
		for ($x = 0; $x < $width; $x++)
			$t .= '-';
		return $t;
	}

	function addTable($table)
	{
		$widths = array();

		if ($table['header']) {
			$table_cols = count($table['header']);
		} else {
			$table_cols = count($table['data'][0]);
		}

		/* Find the width of each column */
		if ($table['header']) {
			for ($c = 0; $c < $table_cols; $c++) {
				$w = strlen($table['header'][$c]);
				if ($w > $widths[$c])
					$widths[$c] = $w;
			}
		}
		foreach ($table['data'] AS $dataline) {
			for ($c = 0; $c < $table_cols; $c++) {
				$w = strlen($dataline[$c]);
				if ($w > $widths[$c])
					$widths[$c] = $w;
			}
		}

		if ($table['header']) {
			$this->txtdata .= $this->str_separator;
			for ($c = 0; $c < $table_cols; $c++) {
				$head = $this->centerText($table['header'][$c], $widths[$c]);
				$this->txtdata .= $head;
				$this->txtdata .= $this->str_separator;
			}
			$this->txtdata .= $this->newline();
			$this->txtdata .= $this->str_separator;
			for ($c = 0; $c < $table_cols; $c++) {
				$this->txtdata .= $this->dashText($widths[$c]);
				$this->txtdata .= $this->str_separator;
			}
			$this->txtdata .= $this->newline();
		}

		// now do the data in the table
		if ($table['data']) {
			foreach ($table['data'] AS $dataline) {
				$this->txtdata .= $this->str_separator;
				for ($c = 0; $c < $table_cols; $c++) {
					$d = $this->leftText($dataline[$c], $widths[$c]);
					$this->txtdata .= $d;
					$this->txtdata .= $this->str_separator;
				}
				$this->txtdata .= $this->newline();
			}
		}
	}

	function heading($str)
	{
		// we need to put it in quotes incase it contains a comma we dont want it going to the next 'cell'
		$this->txtdata .= '"' . $str . '"';
		$this->txtdata .= $this->newline();
	}

	function addText($str, $align = '')
	{
		// we need to put it in quotes incase it contains a comma we dont want it going to the next 'cell'
		$this->txtdata .= '"' . $str . '"';
		$this->txtdata .= $this->newline();
	}

	function nextline()
	{
		$this->txtdata .= $this->newline();
	}

	function newPage()
	{
		// well we cant really go to a new page, so in teh absense of a new page, lets put a few blank lines in?
		//		$this->txtdata.=$this->newline();
		//		$this->txtdata.=$this->newline();
		//		$this->txtdata.=$this->newline();
	}

	function output()
	{
		if ($this->txtdata) {
			$filename = strtolower($this->page_subheader);
			$filename = preg_replace('/[^a-z0-9]/', '_', $filename);
			// header("Content-type: application/csv");
			header('Content-type: text/plain');
			header('Content-disposition: inline; filename=sfiab_' . $filename . '.txt');
			header('Content-length: ' . strlen($this->txtdata));
			echo $this->txtdata;
		}
	}

	function ltxt($subheader, $sep = ' | ', $nl = "\r\n")
	{
		$this->page_subheader = $subheader;
		$this->setSeparator($sep);
		$this->setNewline($nl);
	}
}
?>