function is_undef(value) { return typeof value === 'undefined' }

function coalesce(value, empty) { return !is_undef(value) ? value : empty }

function starts_with(str, prefix)

{

	return str.substr(0, prefix.length) === prefix

}

function ends_with(str, suffix) { return str.substr(-suffix.length) === suffix }

function rm_prefix(prefix, str)

{

	return starts_with(str, prefix) ? str.substr(prefix.length) : str

}

function rm_suffix(suffix, str)

{

	return ends_with(str, suffix) ?

		str.substr(0, str.length - suffix.length) : str

}

function partition(str, delim)

{

	var delim_idx = str.indexOf(delim)

	return delim_idx >= 0 ? {head: str.substr(0, delim_idx),

		tail: str.substr(delim_idx+delim.length)} : {head: str, tail: ''}

}

function parse_dot_path(path) { return partition(path, '.') }

function parse_mixed_path(path)

{

	path = /^([\w-]*)(.*)$/.exec(path)

	return {head: path[1], tail: rm_prefix('.', path[2])}

}

function strip_url(url) { return rm_suffix('#', url) }

#### URL resolution

DirectorySlash on

DirectoryIndex index.php

### mod_rewrite

RewriteEngine on

RewriteBase /

# remove www subdomain

RewriteCond %{HTTP_HOST} ^www\.(.*)$

RewriteRule ^.*$ http://%1/$0 [redirect]

# translate subdomain to path

RewriteCond expr "%{HTTP_HOST} != %{SERVER_NAME}"

RewriteCond %{HTTP_HOST} ^(.*)(\.[^.]*){2}$

RewriteCond ${subdomain2path:%1} ^([^/]*).*$

RewriteCond expr "! $0 -fnmatch '%1*'"

RewriteRule ^.*$ %0/$0 [last]

# translate dot-paths to dirs

RewriteCond %{DOCUMENT_ROOT}/$1 -d [ornext]

RewriteCond %{DOCUMENT_ROOT}/$1 -l

RewriteRule ^([^.]*)\.(.*)$ $1/$2 [next]

	# next: if match, repeat until no more replacements

# non-filesystem paths

ErrorDocument 404 /

html {font-size: 10pt; font-family: Verdana, sans-serif;}

a {color: blue; text-decoration: none;}

a:hover {text-decoration: underline;}

big, .big {font-size: 140%; font-weight: bold;}

code, .code {font-weight: normal; font-family: Courier, monospace;}

.progress {text-decoration: blink;}

h2, h3, h4, h5, h6, blockquote {margin-bottom: 3pt;}

h3, h4 {margin-top: 8pt;}

blockquote, h5, h6 {margin-top: 4pt;}

.indent {padding-left: 2em;}

<?php

require_once dirname(__FILE__)."/util.php";

$self_dir = ensure_suffix("/", dirname($_SERVER["SCRIPT_NAME"]));

# config

$alias = "j.mp/vegpath#";

function by_prefix($url, $main_url=null)

{

	if (!isset($main_url)) $main_url = $url;

	return function($path) use($url, $main_url)

	{

		return $path ? $url.$path : $main_url;

	};

}

$h_level = 5;

$root = $_SERVER["HTTP_HOST"] === $_SERVER["SERVER_NAME"]

	? $alias : $_SERVER["HTTP_HOST"].$self_dir;

# instead of PATH_INFO, to support the Apache ErrorDocument directive

$rel_fs_path = rm_prefix($self_dir, $_SERVER["REQUEST_URI"]);

$path = parse_dot_path($rel_fs_path);

$ns = strtolower($path->head);

function add_ns($name, $path_pat, $url_func)

{

	global $root, $h_level, $path, $ns;

	if (is_string($url_func)) $url_func = by_prefix($url_func);

	print("<h".$h_level.' id="'.$name.'">'.$root.'<big><a href="http://'.$root

		.$name.'">'.$name."</a></big><i>".$path_pat."</i></h".$h_level.">\n");

	if ($ns === strtolower($name)) # found match, so redirect

	{

		header("Location: ".strip_url($url_func($path->tail)));

		ob_end_flush();

		exit;

	}

}

function custom_separator($url, $sep, $main_url=null)

{

	if (!isset($main_url)) $main_url = $url;

	return function($path) use($url, $sep, $main_url)

	{

		if ($path === "") return $main_url;

		$path = parse_dot_path($path);

		return $url.join_non_empty($sep, array($path->head, $path->tail));

	};

}

function fragment_override($url, $fragment=null)

{

	return function($path) use($url, $fragment)

	{

		if (!isset($fragment))

		{

			$path = parse_dot_path($path);

			$fragment = $path->head;

			$path = $path->tail;

		}

		if ($path !== "") $url .= "?".$path;

		return $url."#".$fragment;

	};

}

function phpPgAdmin($url, $table=null)

{

	return function($path) use($url, $table)

	{

		$path = join_non_empty(".", array($table, $path));

		$path = parse_dot_path($path);

		$subject = "schema";

		if ($path->head !== "")

		{

			$url .= "&table=".$path->head;

			if ($path->tail !== "")

			{

				$url .= "&column=".$path->tail;

				$subject = "column";

			}

			else $subject = "table";

		}

		$url .= "&subject=".$subject;

		return $url;

	};

}

function phpMyAdmin($url, $table=null)

{

	return function($path) use($url, $table)

	{

		$path = join_non_empty(".", array($table, $path));

		$path = parse_dot_path($path);

		$target = "db_structure";

		if ($path->head !== "")

		{

			$url .= "&table=".$path->head;

			if ($path->tail !== "") $url .= "&column=".$path->tail;

			$target = "tbl_structure";

		}

		$url .= "&target=".$target.".php";

		return $url;

	};

}

ob_start(); // delay output in case there is a redirect

?>

<html>

	<head>

		<title>VegPath</title>

		<link rel="stylesheet" type="text/css" href="main.css" />

		<style type="text/css">

h1 {color: green;}

		</style>

		<script type="text/javascript" src="util.js"></script>

	</head>

	<body>

		<h1>VegPath&nbsp;&nbsp; <small><a href="http://en.wikipedia.org/wiki/PURL">persistent URLs</a> for vegetation resources</small></h1>

		<div>Supported URL patterns:&nbsp;&nbsp; <small>(elements in <i>italics</i> are optional)</small></div>

		<p></p>

<?php

# add and list URLs

$Redmine = "https://projects.nceas.ucsb.edu/nceas/projects/bien";

$Redmine_svn = $Redmine."/repository/raw";

$nimoy = "http://nimoy.nceas.ucsb.edu/phpmyadmin/index.php";

function nimoy_db($db) { global $nimoy; return phpMyAdmin($nimoy."?db=".$db); }

$IH_db = phpMyAdmin($nimoy."?db=bien3_adb", "ih");

$SALVIAS = "http://salvias.net/Documents/salvias_data_dictionary.html";

?>

		<table border="0" cellspacing="0" cellpadding="0">

			<tr valign="top">

				<td nowrap="nowrap"><h2>Terms</h2></td>

				<td nowrap="nowrap"><h2>Data</h2></td>

			</tr>

			<tr valign="top">

				<td nowrap="nowrap">

<?php

print("<blockquote>\n");

print("<h3>Exchange schemas</h3>");

{

	print("<blockquote>\n");

	add_ns("VegCore", ".term", "https://projects.nceas.ucsb.edu/nceas/projects/bien/wiki/VegCore#");

	add_ns("DwC", ".term", "http://rs.tdwg.org/dwc/terms/#");

	{

		print("<blockquote>\n"); $h_level++;

		add_ns("DwC-history", ".term", "http://rs.tdwg.org/dwc/terms/history/#");

		print("</blockquote>\n"); $h_level--;

	}

	add_ns("TCS", "#/XPath", "http://www.tdwg.org/standards/117/download/#/v101.xsd");

	add_ns("VegX", "#/XPath", "http://wiki.tdwg.org/twiki/pub/Vegetation/WebHome/VegX_Schema_1.5.3_proposed.zip#/veg.xsd");

	print("</blockquote>\n");

}

print("<h3>Aggregators</h3>");

{

	print("<blockquote>\n");

	add_ns("VegBank", ".table.column", custom_separator("http://vegbank.org/vegbank/views/dba_tabledescription_detail.jsp?view=detail&entity=dba_tabledescription&where=where_tablename&wparam=",

		"#", "http://vegbank.org/get/index/dba_tabledescription"));

	add_ns("SALVIAS", ".table.column", by_prefix($SALVIAS."#Plot_", $SALVIAS));

	{

		print("<blockquote>\n"); $h_level++;

		add_ns("SALVIAS-db", ".table.column", nimoy_db("salvias_plots"));

		add_ns("SALVIAS-users", ".table.column", nimoy_db("salvias_users"));

		print("</blockquote>\n"); $h_level--;

	}

	add_ns("BIEN2", "", $nimoy."?target=server_databases.php");

	{

		print("<blockquote>\n"); $h_level++;

		add_ns("BIEN2-web", ".table.column", nimoy_db("bien_web"));

		add_ns("BIEN2-core", ".table.column", nimoy_db("bien2"));

		add_ns("BIEN2-geoscrub", ".table.column", nimoy_db("geoscrub"));

		add_ns("BIEN2-staging", ".table.column", nimoy_db("bien2_staging"));

		print("</blockquote>\n"); $h_level--;

	}

	add_ns("VegBIEN", ".table.column", phpPgAdmin("http://vegbiendev.nceas.ucsb.edu/phppgadmin/redirect.php?server=localhost%3A5432%3Aallow&database=vegbien&schema=public"));

	print("</blockquote>\n");

}

print("<h3>Primary databases</h3>");

{

	print("<blockquote>\n");

	add_ns("TNRS", ".term", fragment_override("http://tnrs.iplantcollaborative.org/instructions.html", "download_results"));

	add_ns("CTFS", "", $Redmine."/wiki/CTFS");

	{

		print("<blockquote>\n"); $h_level++;

		add_ns("CTFS-schema", ".table.column", $Redmine_svn."/inputs/CTFS/_archive/DBv5.txt#");

		add_ns("CTFS-tables", ".table", fragment_override($Redmine."/wiki/CTFS", "Tables"));

		add_ns("CTFS-terms", ".term", $Redmine_svn."/inputs/CTFS/_src/ctfs-comments_worksheet.xls#");

		print("</blockquote>\n"); $h_level--;

	}

	add_ns("IH-db", ".term", $IH_db);

	print("</blockquote>\n");

}

print("<h3>People</h3>");

{

	print("<blockquote>\n");

	add_ns("Brad-Boyle", "", "mailto:bboyleATemail.arizona.edu");

	{

		print("<blockquote>\n"); $h_level++;

		$Brad_Boyle_VegCore = $Redmine_svn."/schemas/VegCore/Brad_Boyle";

		add_ns("Brad-Boyle-data-provenance", ".term", $Brad_Boyle_VegCore."/BIEN%20database%20entities%20related%20to%20data%20provenance%20and%20ownership.docx#");

		add_ns("Brad-Boyle-DwC-IDs-2013-2-7", ".term", $Brad_Boyle_VegCore."/vegbien_identifiers.xlsx#");

		add_ns("Brad-Boyle-DwC-IDs-2013-1-31", ".term", $Brad_Boyle_VegCore."/vegbien_identifier_examples.xlsx#");

		print("</blockquote>\n"); $h_level--;

	}

	print("</blockquote>\n");

}

print("</blockquote>\n");

?>

				</td>

				<td nowrap="nowrap">

<?php

print("<blockquote>\n");

print("<h3>Institutions</h3>");

{

	print("<blockquote>\n");

	add_ns("IH", ".herbarium_code", by_prefix("http://sweetgum.nybg.org/ih/herbarium_list.php?QueryName=DetailedQuery&Restriction=NamPartyType+%3D+%27IH+Herbarium%27&col_NamOrganisationAcronym=",

		"http://sweetgum.nybg.org/ih/"));

	print("</blockquote>\n");

}

print("</blockquote>\n");

?>

				</td>

			</tr>

		</table>

<?php

if (ends_with($root, '#')) # URL shortener requires fragment redirect

{

?>

		<script type="text/javascript">

var loc = document.location

if (loc.hash) document.location = rm_prefix('#', loc.hash)

		</script>

<?php

}

?>

	</body>

</html>

<?php

ob_end_flush();

?>

<html>

	<head>

		<title>VegPath</title>

		<link rel="stylesheet" type="text/css" href="main.css" />

		<style type="text/css">

h1 {color: green;}

		</style>

		<script type="text/javascript" src="util.js"></script>

	</head>

	<body>

		<h1>VegPath&nbsp;&nbsp; <small>human-readable URLs for vegetation resources</small></h1>

		<div>Supported URL patterns:&nbsp;&nbsp; <small><i>(elements can be left out successively from the end of the URL)</i></small></div>

		<blockquote>

			<script type="text/javascript">

//// add and list URLs

// config

var alias = 'j.mp/vegpath'

function by_prefix(url, main_url)

{

	if (!main_url) main_url = url

	return function(path) { return path ? url+path : main_url }

}

var h_level = 4

var path = parse_mixed_path(rm_prefix('#', document.location.hash))

var ref = path.head.toLowerCase()

function add_ref(name, suffix, url_func)

{

	if (typeof url_func === 'string') url_func = by_prefix(url_func)

	document.write('<h'+h_level+'><code>'+alias+'#<big><a href="http://'+alias

		+'#'+name+'">'+name+'</a></big><i>'+suffix+'</i></code></h'+h_level+'>')

	if (ref === name.toLowerCase())

	{

		document.write('<h4 class="progress">Loading '+name+'...</h4>')

		document.location = strip_url(url_func(path.tail))

	}

}

function fragment_override(url, fragment/*=path.head*/)

{

	return function(path)

	{

		if (is_undef(fragment))

		{

			path = parse_dot_path(path)

			fragment = path.head

			path = path.tail

		}

		if (path) url += '?'+path

		return url+'#'+fragment

	}

}

function phpPgAdmin(url)

{

	return function(path)

	{

		path = parse_dot_path(path)

		if (path.head)

		{

			url += '&table='+path.head

			if (path.tail) url += '&column='+path.tail+'&subject=column'

			else url += '&subject=table'

		}

		else url += '&subject=schema'

		return url

	}

}

function phpMyAdmin(url)

{

	return function(path)

	{

		path = parse_dot_path(path)

		if (path.head)

		{

			url += '&table='+path.head

			if (path.tail) url += '&column='+path.tail+'&subject=column'

			else url += '&subject=table'

		}

		else url += '&subject=schema'

		return url

	}

}

function VegBank(url)

{

	return function(path)

	{

		path = parse_dot_path(path)

		if (path.head) url += '/vegbank/views/dba_tabledescription_detail.jsp?view=detail&entity=dba_tabledescription&where=where_tablename&wparam='+path.head+'#'+path.tail

		else url += '/get/index/dba_tabledescription'

		return url

	}

}

document.write('<h2>Terms</h2>')

{

	document.write('<blockquote>')

	document.write('<h3>Exchange schemas</h3>')

	{

		document.write('<blockquote>')

		add_ref('VegCore', '.table.column', 'https://projects.nceas.ucsb.edu/nceas/projects/bien/wiki/VegCore#')

		add_ref('DwC', '.term', 'http://rs.tdwg.org/dwc/terms/#')

		{

			document.write('<blockquote>'); h_level++

			add_ref('DwC-history', '.term', 'http://rs.tdwg.org/dwc/terms/history/#')

			document.write('</blockquote>'); h_level--

		}

		add_ref('TCS', '/XPath', 'http://www.tdwg.org/standards/117/download/#/v101.xsd#')

		add_ref('VegX', '/XPath', 'http://wiki.tdwg.org/twiki/pub/Vegetation/WebHome/VegX_Schema_1.5.3_proposed.zip#/veg.xsd#')

		document.write('</blockquote>')

	}

	document.write('<h3>Aggregators</h3>')

	{

		document.write('<blockquote>')

		add_ref('VegBank', '.table.column', VegBank('http://vegbank.org'))

		add_ref('SALVIAS', '.table.column', 'http://salvias.net/Documents/salvias_data_dictionary.html#')

		add_ref('BIEN2', '.table.column', phpPgAdmin('http://vegbiendev.nceas.ucsb.edu/phppgadmin/redirect.php?server=localhost%3A5432%3Aallow&database=vegbien&schema=public'))

		add_ref('VegBIEN', '.table.column', phpPgAdmin('http://vegbiendev.nceas.ucsb.edu/phppgadmin/redirect.php?server=localhost%3A5432%3Aallow&database=vegbien&schema=public'))

		document.write('</blockquote>')

	}

	document.write('<h3>Primary databases</h3>')

	{

		document.write('<blockquote>')

		add_ref('TNRS', '.term', fragment_override('http://tnrs.iplantcollaborative.org/instructions.html', 'download_results'))

		document.write('</blockquote>')

	}

	document.write('</blockquote>')

}

document.write('<h2>Data</h2>')

{

	document.write('<blockquote>')

	add_ref('IH', '.herbarium_code', by_prefix('http://sweetgum.nybg.org/ih/herbarium_list.php?QueryName=DetailedQuery&Restriction=NamPartyType+%3D+%27IH+Herbarium%27&col_NamOrganisationAcronym=',

			'http://sweetgum.nybg.org/ih/'))

	document.write('</blockquote>')

}

			</script>

		</blockquote>

	</body>

</html>

<?php

function starts_with($str, $prefix)

{

	return substr($str, 0, strlen($prefix)) === $prefix;

}

function ends_with($str, $suffix)

{

	return substr($str, -strlen($suffix)) === $suffix;

}

function rm_prefix($prefix, $str)

{

	return starts_with($str, $prefix) ? substr($str, strlen($prefix)) : $str;

}

function rm_suffix($suffix, $str)

{

	return ends_with($str, $suffix) ?

		substr($str, 0, strlen($str) - strlen($suffix)) : $str;

}

function ensure_prefix($prefix, $str)

{

	return starts_with($str, $prefix) ? $str : $prefix.$str;

}

function ensure_suffix($suffix, $str)

{

	return ends_with($str, $suffix) ? $str : $str.$suffix;

}

class Path

{

	public $head;

	public $tail;

	function Path($head, $tail="")

	{

		$this->head = $head;

		$this->tail = $tail;

	}

}

function partition($str, $delim)

{

	$delim_idx = strpos($str, $delim);

	return $delim_idx !== false ? new Path(substr($str, 0, $delim_idx),

		substr($str, $delim_idx+strlen($delim))) : new Path($str);

}

function array_non_empty($array)

{

	foreach ($array as $key => $value)

		if (!isset($value) || $value === "") unset($array[$key]);

	return $array;

}

function join_non_empty($delim, $array)

{

	return implode($delim, array_non_empty($array));

}

function parse_dot_path($path) { return partition($path, "."); }

function parse_mixed_path($path)

{

	preg_match('/^([\w-]*)(.*)$/', $path, $path);

	return new Path($path[1], rm_prefix(".", $path[2]));

}

function strip_url($url) { return rm_suffix("#", $url); }

?>

<VirtualHost *:80>

	ServerRoot /home/bien/svn/web

	ServerAdmin aaronmk@nceas.ucsb.edu

	RewriteEngine on

	RewriteMap subdomain2path prg:subdomain2path

	DocumentRoot vegpath

	<Directory vegpath>

		AllowOverride all

	</Directory>

	ErrorLog logs/error_log

	CustomLog logs/access_log combined

</VirtualHost>