* @version 0.5.1.htischer.20090507
* - trailing slash of base_path in build_url is no longer optional when
* required. This allows paths not ending in a slash, e.g. on dynamically
* created sites with page id in the url parameters.
* @version 20090601
* - fix windows paths
* @version 20090610
* - relax windows path syntax, use uniform path delimiter. Used for background images.
*/
/* $Id: functions.inc.php 187 2009-10-20 19:09:52Z eclecticgeek@gmail.com $ */
/**
* print_r wrapper for html/cli output
*
* Wraps print_r() output in < pre > tags if the current sapi is not
* 'cli'. Returns the output string instead of displaying it if $return is
* true.
*
* @param mixed $mixed variable or expression to display
* @param bool $return
*
*/
if ( !function_exists("pre_r") ) {
function pre_r($mixed, $return = false) {
if ($return)
return "" . print_r($mixed, true) . "
";
if ( php_sapi_name() != "cli")
echo ("");
print_r($mixed);
if ( php_sapi_name() != "cli")
echo("");
else
echo ("\n");
flush();
}
}
/**
* var_dump wrapper for html/cli output
*
* Wraps var_dump() output in < pre > tags if the current sapi is not
* 'cli'.
*
* @param mixed $mixed variable or expression to display.
*/
if ( !function_exists("pre_var_dump") ) {
function pre_var_dump($mixed) {
if ( php_sapi_name() != "cli")
echo("");
var_dump($mixed);
if ( php_sapi_name() != "cli")
echo("");
}
}
/**
* builds a full url given a protocol, hostname, base path and url
*
* @param string $protocol
* @param string $host
* @param string $base_path
* @param string $url
* @return string
*
* Initially the trailing slash of $base_path was optional, and conditionally appended.
* However on dynamically created sites, where the page is given as url parameter,
* the base path might not end with an url.
* Therefore do not append a slash, and **require** the $base_url to ending in a slash
* when needed.
* Vice versa, on using the local file system path of a file, make sure that the slash
* is appended (o.k. also for Windows)
*/
function build_url($protocol, $host, $base_path, $url) {
if ( mb_strlen($url) == 0 ) {
//return $protocol . $host . rtrim($base_path, "/\\") . "/";
return $protocol . $host . $base_path;
}
// Is the url already fully qualified?
if ( mb_strpos($url, "://") !== false )
return $url;
$ret = $protocol;
if (!in_array(mb_strtolower($protocol), array("http://", "https://", "ftp://", "ftps://"))) {
//On Windows local file, an abs path can begin also with a '\' or a drive letter and colon
//drive: followed by a relative path would be a drive specific default folder.
//not known in php app code, treat as abs path
//($url{1} !== ':' || ($url{2}!=='\\' && $url{2}!=='/'))
if ($url{0} !== '/' && (strtoupper(substr(PHP_OS, 0, 3)) !== 'WIN' || ($url{0} != '\\' && $url{1} !== ':'))) {
// For rel path and local acess we ignore the host, and run the path through realpath()
$ret .= dompdf_realpath($base_path).'/';
}
$ret .= $url;
return $ret;
}
//remote urls with backslash in html/css are not really correct, but lets be genereous
if ( $url{0} === '/' || $url{0} === '\\' ) {
// Absolute path
$ret .= $host . $url;
} else {
// Relative path
//$base_path = $base_path !== "" ? rtrim($base_path, "/\\") . "/" : "";
$ret .= $host . $base_path . $url;
}
return $ret;
}
/**
* parse a full url or pathname and return an array(protocol, host, path,
* file + query + fragment)
*
* @param string $url
* @return array
*/
function explode_url($url) {
$protocol = "";
$host = "";
$path = "";
$file = "";
$arr = parse_url($url);
if ( isset($arr["scheme"]) &&
$arr["scheme"] != "file" &&
mb_strlen($arr["scheme"]) > 1 ) // Exclude windows drive letters...
{
$protocol = $arr["scheme"] . "://";
if ( isset($arr["user"]) ) {
$host .= $arr["user"];
if ( isset($arr["pass"]) )
$host .= "@" . $arr["pass"];
$host .= ":";
}
if ( isset($arr["host"]) )
$host .= $arr["host"];
if ( isset($arr["port"]) )
$host .= ":" . $arr["port"];
if ( isset($arr["path"]) && $arr["path"] !== "" ) {
// Do we have a trailing slash?
if ( $arr["path"]{ mb_strlen($arr["path"]) - 1 } == "/" ) {
$path = $arr["path"];
$file = "";
} else {
$path = dirname($arr["path"]) . "/";
$file = basename($arr["path"]);
}
}
if ( isset($arr["query"]) )
$file .= "?" . $arr["query"];
if ( isset($arr["fragment"]) )
$file .= "#" . $arr["fragment"];
} else {
$i = mb_strpos($url, "file://");
if ( $i !== false)
$url = mb_substr($url, $i + 7);
$protocol = ""; // "file://"; ? why doesn't this work... It's because of
// network filenames like //COMPU/SHARENAME
$host = ""; // localhost, really
$file = basename($url);
$path = dirname($url);
// Check that the path exists
if ( $path !== false ) {
$path .= '/';
} else {
// generate a url to access the file if no real path found.
$protocol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ? 'https://' : 'http://';
$host = isset($_SERVER["HTTP_HOST"]) ? $_SERVER["HTTP_HOST"] : php_uname("n");
if ( substr($arr["path"], 0, 1) == '/' ) {
$path = dirname($arr["path"]);
} else {
$path = '/' . rtrim(dirname($_SERVER["SCRIPT_NAME"]), '/') . '/' . $arr["path"];
}
}
}
$ret = array($protocol, $host, $path, $file,
"protocol" => $protocol,
"host" => $host,
"path" => $path,
"file" => $file);
return $ret;
}
/**
* converts decimal numbers to roman numerals
*
* @param int $num
* @return string
*/
function dec2roman($num) {
static $ones = array("", "i", "ii", "iii", "iv", "v",
"vi", "vii", "viii", "ix");
static $tens = array("", "x", "xx", "xxx", "xl", "l",
"lx", "lxx", "lxxx", "xc");
static $hund = array("", "c", "cc", "ccc", "cd", "d",
"dc", "dcc", "dccc", "cm");
static $thou = array("", "m", "mm", "mmm");
if ( !is_numeric($num) )
throw new DOMPDF_Exception("dec2roman() requires a numeric argument.");
if ( $num > 4000 || $num < 0 )
return "(out of range)";
$num = strrev((string)$num);
$ret = "";
switch (mb_strlen($num)) {
case 4:
$ret .= $thou[$num{3}];
case 3:
$ret .= $hund[$num{2}];
case 2:
$ret .= $tens[$num{1}];
case 1:
$ret .= $ones[$num{0}];
default:
break;
}
return $ret;
}
/**
* Determines whether $value is a percentage or not
*
* @param float $value
* @return bool
*/
function is_percent($value) { return false !== mb_strpos($value, "%"); }
/**
* Canonicalize a path without checking if the file exists
*
* @param string $path The path to canonicalize
* @return string The canonical path, or null if the path is invalid (e.g. /../../foo)
*/
function dompdf_realpath($path) {
// If the path is relative, prepend the current directory
if ( strtoupper(substr(PHP_OS, 0, 3)) === 'WIN' ) {
if ( $path{0} == '/' || $path{0} == '\\' ) {
$path = substr(getcwd(),0,2) . $path;
} else if ($path{1} != ':' ) {
$path = getcwd() . DIRECTORY_SEPARATOR . $path;
}
} else if ($path{0} != '/') {
$path = getcwd() . DIRECTORY_SEPARATOR . $path;
}
$path = strtr( $path, DIRECTORY_SEPARATOR == "\\" ? "/" : DIRECTORY_SEPARATOR , DIRECTORY_SEPARATOR);
$parts = explode(DIRECTORY_SEPARATOR, $path);
$path = array();
$i = 0;
foreach ($parts as $dir) {
if ( $dir == "." )
continue;
if ( $dir == ".." ) {
$i--;
if ( $i < 0 )
$i = 0;
unset($path[$i]);
continue;
}
if ( $dir == "" )
continue;
$path[$i] = $dir;
++$i;
}
return (DIRECTORY_SEPARATOR === '/' ? DIRECTORY_SEPARATOR : NULL) . join(DIRECTORY_SEPARATOR, $path);
}
/**
* mb_string compatibility
*/
if ( !function_exists("mb_convert_encoding") ) {
function mb_convert_encoding($data, $to_encoding, $from_encoding='UTF-8') {
if (str_replace('-', '', strtolower($to_encoding)) == 'utf8') {
return utf8_encode($data);
} else {
return utf8_decode($data);
}
}
}
if ( !function_exists("mb_detect_encoding") ) {
function mb_detect_encoding($data, $encoding_list=array('iso-8859-1'), $strict=false) {
return 'iso-8859-1';
}
}
if ( !function_exists("mb_internal_encoding") ) {
function mb_internal_encoding($encoding=NULL) {
if (isset($encoding)) {
return true;
} else {
return 'iso-8859-1';
}
}
}
if ( !function_exists("mb_strlen") ) {
function mb_strlen($str, $encoding='iso-8859-1') {
return strlen($str);
}
}
if ( !function_exists("mb_strpos") ) {
function mb_strpos($haystack, $needle, $offset = 0) {
return strpos($haystack, $needle, $offset);
}
}
if ( !function_exists("mb_strrpos") ) {
function mb_strrpos($haystack, $needle, $offset = 0) {
return strrpos($haystack, $needle, $offset);
}
}
if ( !function_exists("mb_strtolower") ) {
function mb_strtolower($str) {
return strtolower($str);
}
}
if ( !function_exists("mb_strtoupper") ) {
function mb_strtoupper($str) {
return strtoupper($str);
}
}
if ( !function_exists("mb_substr") ) {
function mb_substr($str, $start, $length=null, $encoding='iso-8859-1') {
if ( is_null($length) )
return substr($str, $start);
else
return substr($str, $start, $length);
}
}
if ( !function_exists("mb_substr_count") ) {
function mb_substr_count($haystack, $needle) {
return substr_count($haystack, $needle);
}
}
/**
* Stores warnings in an array for display later
*
* This function allows warnings generated by the DomDocument parser
* and CSS loader ({@link Stylesheet}) to be captured and displayed
* later. Without this function, errors are displayed immediately and
* PDF streaming is impossible.
*
* @see http://www.php.net/manual/en/function.set-error_handler.php
*
* @param int $errno
* @param string $errstr
* @param string $errfile
* @param string $errline
*/
function record_warnings($errno, $errstr, $errfile, $errline) {
if ( !($errno & (E_WARNING | E_NOTICE | E_USER_NOTICE | E_USER_WARNING )) ) // Not a warning or notice
throw new DOMPDF_Exception($errstr . " $errno");
global $_dompdf_warnings;
global $_dompdf_show_warnings;
if ( $_dompdf_show_warnings )
echo $errstr . "\n";
$_dompdf_warnings[] = $errstr;
}
/**
* Print a useful backtrace
*/
function bt() {
$bt = debug_backtrace();
array_shift($bt); // remove actual bt() call
echo "\n";
$i = 0;
foreach ($bt as $call) {
$file = basename($call["file"]) . " (" . $call["line"] . ")";
if ( isset($call["class"]) ) {
$func = $call["class"] . "->" . $call["function"] . "()";
} else {
$func = $call["function"] . "()";
}
echo "#" . str_pad($i, 2, " ", STR_PAD_RIGHT) . ": " . str_pad($file.":", 42) . " $func\n";
++$i;
}
echo "\n";
}
/**
* Print debug messages
*
* @param string $type The type of debug messages to print
*/
function dompdf_debug($type, $msg) {
global $_DOMPDF_DEBUG_TYPES;
global $_dompdf_show_warnings;
global $_dompdf_debug;
if ( isset($_DOMPDF_DEBUG_TYPES[$type]) && ($_dompdf_show_warnings || $_dompdf_debug) ) {
$arr = debug_backtrace();
echo basename($arr[0]["file"]) . " (" . $arr[0]["line"] ."): " . $arr[1]["function"] . ": ";
pre_r($msg);
}
}
/**
* Dump memory usage
*/
if ( !function_exists("print_memusage") ) {
function print_memusage() {
global $memusage;
echo ("Memory Usage\n");
$prev = 0;
$initial = reset($memusage);
echo (str_pad("Initial:", 40) . $initial . "\n\n");
foreach ($memusage as $key=>$mem) {
$mem -= $initial;
echo (str_pad("$key:" , 40));
echo (str_pad("$mem", 12) . "(diff: " . ($mem - $prev) . ")\n");
$prev = $mem;
}
echo ("\n" . str_pad("Total:", 40) . memory_get_usage()) . "\n";
}
}
/**
* Initialize memory profiling code
*/
if ( !function_exists("enable_mem_profile") ) {
function enable_mem_profile() {
global $memusage;
$memusage = array("Startup" => memory_get_usage());
register_shutdown_function("print_memusage");
}
}
/**
* Record the current memory usage
*
* @param string $location a meaningful location
*/
if ( !function_exists("mark_memusage") ) {
function mark_memusage($location) {
global $memusage;
if ( isset($memusage) )
$memusage[$location] = memory_get_usage();
}
}
/**
* Find the current system temporary directory
*
* @link http://us.php.net/manual/en/function.sys-get-temp-dir.php#85261
*/
if ( !function_exists('sys_get_temp_dir')) {
function sys_get_temp_dir() {
if (!empty($_ENV['TMP'])) { return realpath($_ENV['TMP']); }
if (!empty($_ENV['TMPDIR'])) { return realpath( $_ENV['TMPDIR']); }
if (!empty($_ENV['TEMP'])) { return realpath( $_ENV['TEMP']); }
$tempfile=tempnam(uniqid(rand(),TRUE),'');
if (file_exists($tempfile)) {
unlink($tempfile);
return realpath(dirname($tempfile));
}
}
}
?>