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CiteProc.php
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CiteProc.php
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<?php
/**
* CiteProc-PHP
*
* Copyright (C) 2010 - 2011 Ron Jerome, all rights reserved
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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. If not, see <http://www.gnu.org/licenses/>.
*
*/
class citeproc {
public $bibliography;
public $citation;
public $style;
protected $macros;
private $info;
protected $locale;
protected $style_locale;
public $quash;
private $mapper = NULL;
function __construct($csl = NULL, $lang = 'en') {
if ($csl) {
$this->init($csl, $lang);
}
}
function init($csl, $lang) {
// define field values appropriate to your data in the csl_mapper class and un-comment the next line.
$this->mapper = new csl_mapper();
$this->quash = array();
$csl_doc = new DOMDocument();
if ($csl_doc->loadXML($csl)) {
$style_nodes = $csl_doc->getElementsByTagName('style');
if ($style_nodes) {
foreach ($style_nodes as $style) {
$this->style = new csl_style($style);
}
}
$info_nodes = $csl_doc->getElementsByTagName('info');
if ($info_nodes) {
foreach ($info_nodes as $info) {
$this->info = new csl_info($info);
}
}
$this->locale = new csl_locale($lang);
$this->locale->set_style_locale($csl_doc);
$macro_nodes = $csl_doc->getElementsByTagName('macro');
if ($macro_nodes) {
$this->macros = new csl_macros($macro_nodes, $this);
}
$citation_nodes = $csl_doc->getElementsByTagName('citation');
foreach ($citation_nodes as $citation) {
$this->citation = new csl_citation($citation, $this);
}
$bibliography_nodes = $csl_doc->getElementsByTagName('bibliography');
foreach ($bibliography_nodes as $bibliography) {
$this->bibliography = new csl_bibliography($bibliography, $this);
}
}
}
function render($data, $mode = NULL) {
$text = '';
switch ($mode) {
case 'citation':
$text .= (isset($this->citation))? $this->citation->render($data) : '';
break;
case 'bibliography':
default:
$text .= (isset($this->bibliography))? $this->bibliography->render($data) : '';
break;
}
return $text;
}
function render_macro($name, $data, $mode) {
return $this->macros->render_macro($name, $data, $mode);
}
function get_locale($type, $arg1, $arg2 = NULL, $arg3 = NULL) {
return $this->locale->get_locale($type, $arg1, $arg2, $arg3);
}
function map_field($field) {
if ($this->mapper) {
return $this->mapper->map_field($field);
}
return ($field);
}
function map_type($field) {
if ($this->mapper) {
return $this->mapper->map_type($field);
}
return ($field);
}
}
class csl_factory {
public static function create($dom_node, $citeproc = NULL) {
$class_name = 'csl_' . str_replace('-', '_', $dom_node->nodeName);
if (class_exists($class_name)) {
return new $class_name($dom_node, $citeproc);
}
else {
return NULL;
}
}
}
class csl_collection {
protected $elements = array();
function add_element($elem) {
if (isset($elem)) $this->elements[] = $elem;
}
function render($data, $mode = NULL) {}
function format($text) {return $text;}
}
class csl_element extends csl_collection {
protected $attributes = array();
protected $citeproc;
function __construct($dom_node = NULL, $citeproc = NULL) {
$this->citeproc = &$citeproc;
$this->set_attributes($dom_node);
$this->init($dom_node, $citeproc);
}
function init($dom_node, $citeproc) {
if (!$dom_node) return;
foreach ($dom_node->childNodes as $node) {
if ($node->nodeType == 1) {
$this->add_element(csl_factory::create($node, $citeproc));
}
}
}
function __set($name, $value) {
$this->attributes[$name] = $value;
}
function __isset($name) {
return isset($this->attributes[$name]);
}
function __unset($name) {
unset($this->attributes[$name]);
}
function &__get($name = NULL) {
$null = NULL;
if (array_key_exists($name, $this->attributes)) {
return $this->attributes[$name];
}
if (isset($this->{$name})) {
return $this->{$name};
}
return $null;
}
function set_attributes($dom_node) {
$att = array();
$element_name = $dom_node->nodeName;
if (isset($dom_node->attributes->length)) {
for ($i=0; $i < $dom_node->attributes->length; $i++) {
$value = $dom_node->attributes->item($i)->value;
$name = str_replace(' ', '_', $dom_node->attributes->item($i)->name);
if ($name == 'type' ) {
$value = $this->citeproc->map_type($value);
}
if (($name == 'variable' || $name == 'is-numeric') && $element_name != 'label') {
$value = $this->citeproc->map_field($value);
}
$this->{$name} = $value;
}
}
}
function get_attributes() {
return $this->attributes;
}
function get_hier_attributes() {
$hier_attr = array();
$hier_names = array('and', 'delimiter-precedes-last', 'et-al-min', 'et-al-use-first',
'et-al-subsequent-min', 'et-al-subsequent-use-first', 'initialize-with',
'name-as-sort-order', 'sort-separator', 'name-form', 'name-delimiter',
'names-delimiter');
foreach ($hier_names as $name) {
if (isset($this->attributes[$name])) {
$hier_attr[$name] = $this->attributes[$name];
}
}
return $hier_attr;
}
function name($name = NULL) {
if ($name) {
$this->name = $name;
}
else {
return str_replace(' ', '_', $this->name);
}
}
}
class csl_rendering_element extends csl_element {
function render($data, $mode = NULL) {
$text = '';
$text_parts = array();
$delim = $this->delimiter;
foreach ($this->elements as $element) {
$text_parts[] = $element->render($data, $mode);
}
$text = implode($delim, $text_parts); // insert the delimiter if supplied.
return $this->format($text);
}
}
class csl_format extends csl_rendering_element {
protected $no_op;
protected $format;
function __construct($dom_node = NULL, $citeproc = NULL) {
parent::__construct($dom_node, $citeproc);
$this->init_formatting();
}
function init_formatting() {
$this->no_op = TRUE;
$this->format = '';
if (isset($this->quotes) && strtolower($this->quotes) == "true") {
$this->quotes = array();
$this->quotes['punctuation-in-quote'] = $this->citeproc->get_locale('style_option', 'punctuation-in-quote');
$this->quotes['open-quote'] = $this->citeproc->get_locale('term', 'open-quote');
$this->quotes['close-quote'] = $this->citeproc->get_locale('term', 'close-quote');
$this->quotes['open-inner-quote'] = $this->citeproc->get_locale('term', 'open-inner-quote');
$this->quotes['close-inner-quote'] = $this->citeproc->get_locale('term', 'close-inner-quote');
$this->no_op = FALSE;
}
if (isset($this->{'prefix'})) $this->no_op = FALSE;
if (isset($this->{'suffix'})) $this->no_op = FALSE;
if (isset($this->{'display'})) $this->no_op = FALSE;
$this->format .= (isset($this->{'font-style'})) ? 'font-style: ' . $this->{'font-style'} . ';' : '';
$this->format .= (isset($this->{'font-family'})) ? 'font-family: ' . $this->{'font-family'} . ';' : '';
$this->format .= (isset($this->{'font-weight'})) ? 'font-weight: ' . $this->{'font-weight'} . ';' : '';
$this->format .= (isset($this->{'font-variant'})) ? 'font-variant: ' . $this->{'font-variant'} . ';' : '';
$this->format .= (isset($this->{'text-decoration'})) ? 'text-decoration: ' . $this->{'text-decoration'} . ';' : '';
$this->format .= (isset($this->{'vertical-align'})) ? 'vertical-align: ' . $this->{'vertical-align'} . ';' : '';
// $this->format .= (isset($this->{'display'}) && $this->{'display'} == 'indent') ? 'padding-left: 25px;' : '';
if (isset($this->{'text-case'}) ||
!empty($this->format) ||
!empty($this->span_class) ||
!empty($this->div_class)) {
$this->no_op = FALSE;
}
}
function format($text) {
if (empty($text) || $this->no_op) return $text;
$quotes = $this->quotes;
$quotes = is_array($quotes) ? $quotes : array();
if (isset($this->{'text-case'})) {
switch ($this->{'text-case'}) {
case 'uppercase':
$text = mb_strtoupper($text);
break;
case 'lowercase':
$text = mb_strtolower($text);
break;
case 'capitalize-all':
case 'title':
$text = mb_convert_case($text, MB_CASE_TITLE);
break;
case 'capitalize-first':
$chr1 = mb_strtoupper(mb_substr($text, 0, 1));
$text = $chr1 . mb_substr($text, 1);
break;
}
}
$prefix = $this->prefix;
$prefix .= isset($quotes['open-quote']) ? $quotes['open-quote'] : '';
$suffix = $this->suffix;
if (isset($quotes['close-quote']) && !empty($suffix) && isset($quotes['punctuation-in-quote'])) {
if (strpos($suffix, '.') !== FALSE || strpos($suffix, ',') !== FALSE) {
$suffix = $suffix . $quotes['close-quote'];
}
}
elseif (isset($quotes['close-quote'])) {
$suffix = $quotes['close-quote'] . $suffix;
}
if (!empty($suffix)) { // gaurd against repeaded suffixes...
$no_tags = strip_tags($text);
if (strlen($no_tags) && ($no_tags[(strlen($no_tags) - 1)] == $suffix[0]) ) {
$suffix = substr($suffix, 1);
}
}
if (!empty($this->format) || !empty($this->span_class)) {
$style = (!empty($this->format)) ? 'style="' . $this->format . '" ' : '';
$class = (!empty($this->span_class)) ? 'class="' . $this->span_class . '"' : '';
$text = '<span ' . $class . $style . '>' . $text . '</span>';
}
$div_class = $div_style = '';
if (!empty($this->div_class)) {
$div_class = (!empty($this->div_class)) ? 'class="' . $this->div_class . '"' : '';
}
if ($this->display == 'indent') {
$div_style = 'style="text-indent: 0px; padding-left: 45px;"';
}
if ($div_class || $div_style) {
return '<div ' . $div_class . $div_style . '>' . $prefix . $text . $suffix . '</div>';
}
return $prefix . $text . $suffix;
}
}
class csl_info {
public $title;
public $id;
public $authors = array();
public $links = array();
function __construct($dom_node) {
$name = array();
foreach ($dom_node->childNodes as $node) {
if ($node->nodeType == 1) {
switch ($node->nodeName) {
case 'author':
case 'contributor':
foreach ($node->childNodes as $authnode) {
if ($node->nodeType == 1) {
$name[$authnode->nodeName] = $authnode->nodeValue;
}
}
$this->authors[] = $name;
break;
case 'link':
foreach ($node->attributes as $attribute) {
$this->links[] = $attribute->value;
}
break;
default:
$this->{$node->nodeName} = $node->nodeValue;
}
}
}
}
}
class csl_terms {
}
class csl_name extends csl_format {
private $name_parts = array();
private $attr_init = FALSE;
function __construct($dom_node, $citeproc = NULL) {
$tags = $dom_node->getElementsByTagName('name-part');
if ($tags) {
foreach ($tags as $tag) {
$name_part = $tag->getAttribute('name');
$tag->removeAttribute('name');
for ($i=0; $i < $tag->attributes->length; $i++) {
$value = $tag->attributes->item($i)->value;
$name = str_replace(' ', '_', $tag->attributes->item($i)->name);
$this->name_parts[$name_part][$name] = $value;
}
}
}
parent::__construct($dom_node, $citeproc);
}
function init_formatting() {
$this->no_op = array();
$this->format = array();
$this->base = $this->get_attributes();
$this->format['base'] = '';
$this->format['family'] = '';
$this->format['given'] = '';
$this->no_op['base'] = TRUE;
$this->no_op['family'] = TRUE;
$this->no_op['given'] = TRUE;
if (isset($this->prefix)) {
$this->no_op['base'] = FALSE;
}
if (isset($this->suffix)) {
$this->no_op['base'] = FALSE;
}
$this->init_format($this->base);
if (!empty($this->name_parts)) {
foreach ($this->name_parts as $name => $formatting) {
$this->init_format($formatting, $name);
}
}
}
function init_attrs($mode) {
// $and = $this->get_attributes('and');
if (isset($this->citeproc)) {
$style_attrs = $this->citeproc->style->get_hier_attributes();
$mode_attrs = $this->citeproc->{$mode}->get_hier_attributes();
$this->attributes = array_merge($style_attrs, $mode_attrs, $this->attributes);
}
if (isset($this->and)) {
if ($this->and == 'text') {
$this->and = $this->citeproc->get_locale('term', 'and');
}
elseif ($this->and == 'symbol') {
$this->and = '&';
}
}
if (!isset($this->delimiter)) {
$this->delimiter = $this->{'name-delimiter'} ;
}
if (!isset($this->alnum)) {
list($this->alnum, $this->alpha, $this->cntrl, $this->dash,
$this->digit, $this->graph, $this->lower, $this->print,
$this->punct, $this->space, $this->upper, $this->word,
$this->patternModifiers) = $this->get_regex_patterns();
}
$this->dpl = $this->{'delimiter-precedes-last'};
$this->sort_separator = isset($this->{'sort-separator'}) ? $this->{'sort-separator'} : ', ';
$this->delimiter = isset($this->{'name-delimiter'}) ? $this->{'name-delimiter'} : (isset($this->delimiter) ? $this->delimiter : ', ');
$this->form = isset($this->{'name-form'}) ? $this->{'name-form'} : (isset($this->form) ? $this->form : 'long');
$this->attr_init = $mode;
}
function init_format($attribs, $part = 'base') {
if (!isset($this->{$part})) {
$this->{$part} = array();
}
if (isset($attribs['quotes']) && strtolower($attribs['quotes']) == 'true') {
$this->{$part}['open-quote'] = $this->citeproc->get_locale('term', 'open-quote');
$this->{$part}['close-quote'] = $this->citeproc->get_locale('term', 'close-quote');
$this->{$part}['open-inner-quote'] = $this->citeproc->get_locale('term', 'open-inner-quote');
$this->{$part}['close-inner-quote'] = $this->citeproc->get_locale('term', 'close-inner-quote');
$this->no_op[$part] = FALSE;
}
if (isset($attribs['prefix'])) $this->{$part}['prefix'] = $attribs['prefix'];
if (isset($attribs['suffix'])) $this->{$part}['suffix'] = $attribs['suffix'];
$this->format[$part] .= (isset($attribs['font-style'])) ? 'font-style: ' . $attribs['font-style'] . ';' : '';
$this->format[$part] .= (isset($attribs['font-family'])) ? 'font-family: ' . $attribs['font-family'] . ';' : '';
$this->format[$part] .= (isset($attribs['font-weight'])) ? 'font-weight: ' . $attribs['font-weight'] . ';' : '';
$this->format[$part] .= (isset($attribs['font-variant'])) ? 'font-variant: ' . $attribs['font-variant'] . ';' : '';
$this->format[$part] .= (isset($attribs['text-decoration'])) ? 'text-decoration: ' . $attribs['text-decoration'] . ';' : '';
$this->format[$part] .= (isset($attribs['vertical-align'])) ? 'vertical-align: ' . $attribs['vertical-align'] . ';' : '';
if (isset($attribs['text-case'])) {
$this->no_op[$part] = FALSE;
$this->{$part}['text-case'] = $attribs['text-case'];
}
if (!empty($this->format[$part])) $this->no_op[$part] = FALSE;
}
function format($text, $part = 'base') {
if (empty($text) || $this->no_op[$part]) return $text;
if (isset($this->{$part}['text-case'])) {
switch ($this->{$part}['text-case']) {
case 'uppercase':
$text = mb_strtoupper($text);
break;
case 'lowercase':
$text = mb_strtolower($text);
break;
case 'capitalize-all':
$text = mb_convert_case($text, MB_CASE_TITLE);
break;
case 'capitalize-first':
$chr1 = mb_strtoupper(mb_substr($text, 0, 1));
$text = $chr1 . mb_substr($text, 1);
break;
}
}
$open_quote = isset($this->{$part}['open-quote']) ? $this->{$part}['open-quote'] : '';
$close_quote = isset($this->{$part}['close-quote']) ? $this->{$part}['close-quote'] : '';
$prefix = isset($this->{$part}['prefix']) ? $this->{$part}['prefix'] : '';
$suffix = isset($this->{$part}['suffix']) ? $this->{$part}['suffix'] : '';
if ($text[(strlen($text) -1)] == $suffix) unset($suffix);
if (!empty($this->format[$part])) {
$text = '<span style="' . $this->format[$part] . '">' . $text . '</span>';
}
return $prefix . $open_quote . $text . $close_quote . $suffix;
}
function render($names, $mode = NULL) {
$text = '';
$authors = array();
$count = 0;
$auth_count = 0;
$et_al_triggered = FALSE;
if (!$this->attr_init || $this->attr_init != $mode) $this->init_attrs($mode);
$initialize_with = $this->{'initialize-with'};
foreach ($names as $rank => $name) {
$count++;
//$given = (!empty($name->firstname)) ? $name->firstname : '';
if (!empty($name->given) && isset($initialize_with)) {
$name->given = preg_replace("/([$this->upper])[$this->lower]+/$this->patternModifiers", '\\1', $name->given);
$name->given = preg_replace("/(?<=[-$this->upper]) +(?=[-$this->upper])/$this->patternModifiers", "", $name->given);
if(isset($name->initials)) {
$name->initials = $name->given . $name->initials;
}
$name->initials = $name->given;
}
if (isset($name->initials)) {
// within initials, remove any dots:
$name->initials = preg_replace("/([$this->upper])\.+/$this->patternModifiers", "\\1", $name->initials);
// within initials, remove any spaces *between* initials:
$name->initials = preg_replace("/(?<=[-$this->upper]) +(?=[-$this->upper])/$this->patternModifiers", "", $name->initials);
if ($this->citeproc->style->{'initialize-with-hyphen'} == 'false') {
$name->initials = preg_replace("/-/", '', $name->initials);
}
// within initials, add a space after a hyphen, but only if ...
if (preg_match("/ $/", $initialize_with)) {// ... the delimiter that separates initials ends with a space
// $name->initials = preg_replace("/-(?=[$this->upper])/$this->patternModifiers", " -", $name->initials);
}
// then, separate initials with the specified delimiter:
$name->initials = preg_replace("/([$this->upper])(?=[^$this->lower]+|$)/$this->patternModifiers", "\\1$initialize_with", $name->initials);
// $shortenInitials = (isset($options['numberOfInitialsToKeep'])) ? $options['numberOfInitialsToKeep'] : FALSE;
// if ($shortenInitials) $given = drupal_substr($given, 0, $shortenInitials);
if (isset($initialize_with) ) {
$name->given = $name->initials;
}
elseif(!empty($name->given)) {
$name->given = $name->given .' '. $name->initials;
}
elseif(empty($name->given)) {
$name->given = $name->initials;
}
}
$ndp = (isset($name->{'non-dropping-particle'})) ? $name->{'non-dropping-particle'} . ' ' : '';
$suffix = (isset($name->{'suffix'})) ? ' ' . $name->{'suffix'} : '';
if (isset($name->given)) {
$given = $this->format($name->given, 'given');
}
else {
$given = '';
}
if(isset($name->family)) {
$name->family = $this->format($name->family, 'family');
if ($this->form == 'short') {
$text = $ndp . $name->family;
}
else {
switch ($this->{'name-as-sort-order'}) {
case 'first' && $rank == 0:
case 'all':
$text = $ndp . $name->family . $this->sort_separator . $given;
break;
default:
$text = $given .' '. $ndp . $name->family . $suffix;
}
}
$authors[] = trim($this->format($text));
}
if (isset($this->{'et-al-min'}) && $count >= $this->{'et-al-min'}) break;
}
if (isset($this->{'et-al-min'}) &&
$count >= $this->{'et-al-min'} &&
isset($this->{'et-al-use-first'}) &&
$count >= $this->{'et-al-use-first'} &&
count($names) > $this->{'et-al-use-first'}) {
if ($this->{'et-al-use-first'} < $this->{'et-al-min'}) {
for ($i = $this->{'et-al-use-first'}; $i < $count; $i++) {
unset($authors[$i]);
}
}
if ($this->etal) {
$etal = $this->etal->render();
}
else {
$etal = $this->citeproc->get_locale('term', 'et-al');
}
$et_al_triggered = TRUE;
}
if (!empty($authors) && !$et_al_triggered) {
$auth_count = count($authors);
if (isset($this->and) && $auth_count > 1) {
$authors[$auth_count-1] = $this->and . ' ' . $authors[$auth_count-1]; //stick an "and" in front of the last author if "and" is defined
}
}
$text = implode($this->delimiter, $authors);
if (!empty($authors) && $et_al_triggered) {
switch($this->{'delimiter-precedes-et-al'}) {
case 'never':
$text = $text . " $etal";
break;
case 'always':
$text = $text . "$this->delimiter$etal";
break;
default:
$text = count($authors) == 1 ? $text . " $etal" : $text . "$this->delimiter$etal";
}
}
if ($this->form == 'count') {
if (!$et_al_triggered) {
return (int)count($authors);
}
else {
return (int)(count($authors) - 1);
}
}
// strip out the last delimiter if not required
if (isset($this->and) && $auth_count > 1) {
$last_delim = strrpos($text, $this->delimiter . $this->and);
switch ($this->dpl) { //dpl == delimiter proceeds last
case 'always':
return $text;
break;
case 'never':
return substr_replace($text, ' ', $last_delim, strlen($this->delimiter));
break;
case 'contextual':
default:
if ($auth_count < 3) {
return substr_replace($text, ' ', $last_delim, strlen($this->delimiter));
}
}
}
return $text ;
}
function get_regex_patterns() {
// Checks if PCRE is compiled with UTF-8 and Unicode support
if (!@preg_match('/\pL/u', 'a')) {
// probably a broken PCRE library
return $this->get_latin1_regex();
}
else {
// Unicode safe filter for the value
return $this->get_utf8_regex();
}
}
function get_latin1_regex() {
$alnum = "[:alnum:]ÄÅÁÀÂÃÇÉÈÊËÑÖØÓÒÔÕÜÚÙÛÍÌÎÏÆäåáàâãçéèêëñöøóòôõüúùûíìîïæÿß";
// Matches ISO-8859-1 letters:
$alpha = "[:alpha:]ÄÅÁÀÂÃÇÉÈÊËÑÖØÓÒÔÕÜÚÙÛÍÌÎÏÆäåáàâãçéèêëñöøóòôõüúùûíìîïæÿß";
// Matches ISO-8859-1 control characters:
$cntrl = "[:cntrl:]";
// Matches ISO-8859-1 dashes & hyphens:
$dash = "-–";
// Matches ISO-8859-1 digits:
$digit = "[\d]";
// Matches ISO-8859-1 printing characters (excluding space):
$graph = "[:graph:]ÄÅÁÀÂÃÇÉÈÊËÑÖØÓÒÔÕÜÚÙÛÍÌÎÏÆäåáàâãçéèêëñöøóòôõüúùûíìîïæÿß";
// Matches ISO-8859-1 lower case letters:
$lower = "[:lower:]äåáàâãçéèêëñöøóòôõüúùûíìîïæÿß";
// Matches ISO-8859-1 printing characters (including space):
$print = "[:print:]ÄÅÁÀÂÃÇÉÈÊËÑÖØÓÒÔÕÜÚÙÛÍÌÎÏÆäåáàâãçéèêëñöøóòôõüúùûíìîïæÿß";
// Matches ISO-8859-1 punctuation:
$punct = "[:punct:]";
// Matches ISO-8859-1 whitespace (separating characters with no visual representation):
$space = "[\s]";
// Matches ISO-8859-1 upper case letters:
$upper = "[:upper:]ÄÅÁÀÂÃÇÉÈÊËÑÖØÓÒÔÕÜÚÙÛÍÌÎÏÆ";
// Matches ISO-8859-1 "word" characters:
$word = "_[:alnum:]ÄÅÁÀÂÃÇÉÈÊËÑÖØÓÒÔÕÜÚÙÛÍÌÎÏÆäåáàâãçéèêëñöøóòôõüúùûíìîïæÿß";
// Defines the PCRE pattern modifier(s) to be used in conjunction with the above variables:
// More info: <http://www.php.net/manual/en/reference.pcre.pattern.modifiers.php>
$patternModifiers = "";
return array($alnum, $alpha, $cntrl, $dash, $digit, $graph, $lower,
$print, $punct, $space, $upper, $word, $patternModifiers);
}
function get_utf8_regex() {
// Matches Unicode letters & digits:
$alnum = "\p{Ll}\p{Lu}\p{Lt}\p{Lo}\p{Nd}"; // Unicode-aware equivalent of "[:alnum:]"
// Matches Unicode letters:
$alpha = "\p{Ll}\p{Lu}\p{Lt}\p{Lo}"; // Unicode-aware equivalent of "[:alpha:]"
// Matches Unicode control codes & characters not in other categories:
$cntrl = "\p{C}"; // Unicode-aware equivalent of "[:cntrl:]"
// Matches Unicode dashes & hyphens:
$dash = "\p{Pd}";
// Matches Unicode digits:
$digit = "\p{Nd}"; // Unicode-aware equivalent of "[:digit:]"
// Matches Unicode printing characters (excluding space):
$graph = "^\p{C}\t\n\f\r\p{Z}"; // Unicode-aware equivalent of "[:graph:]"
// Matches Unicode lower case letters:
$lower = "\p{Ll}\p{M}"; // Unicode-aware equivalent of "[:lower:]"
// Matches Unicode printing characters (including space):
$print = "\P{C}"; // same as "^\p{C}", Unicode-aware equivalent of "[:print:]"
// Matches Unicode punctuation (printing characters excluding letters & digits):
$punct = "\p{P}"; // Unicode-aware equivalent of "[:punct:]"
// Matches Unicode whitespace (separating characters with no visual representation):
$space = "\t\n\f\r\p{Z}"; // Unicode-aware equivalent of "[:space:]"
// Matches Unicode upper case letters:
$upper = "\p{Lu}\p{Lt}"; // Unicode-aware equivalent of "[:upper:]"
// Matches Unicode "word" characters:
$word = "_\p{Ll}\p{Lu}\p{Lt}\p{Lo}\p{Nd}"; // Unicode-aware equivalent of "[:word:]" (or "[:alnum:]" plus "_")
// Defines the PCRE pattern modifier(s) to be used in conjunction with the above variables:
// More info: <http://www.php.net/manual/en/reference.pcre.pattern.modifiers.php>
$patternModifiers = "u"; // the "u" (PCRE_UTF8) pattern modifier causes PHP/PCRE to treat pattern strings as UTF-8
return array($alnum, $alpha, $cntrl, $dash, $digit, $graph, $lower,
$print, $punct, $space, $upper, $word, $patternModifiers);
}
}
class csl_names extends csl_format {
private $substitutes;
function init_formatting() {
// $this->span_class = 'authors';
parent::init_formatting();
}
function init($dom_node, $citeproc) {
$etal = '';
$tag = $dom_node->getElementsByTagName('substitute')->item(0);
if ($tag) {
$this->substitutes = csl_factory::create($tag, $citeproc);
$dom_node->removeChild($tag);
}
$tag = $dom_node->getElementsByTagName('et-al')->item(0);
if ($tag) {
$etal = csl_factory::create($tag, $citeproc);
$dom_node->removeChild($tag);
}
$var = $dom_node->getAttribute('variable');
foreach ($dom_node->childNodes as $node) {
if ($node->nodeType == 1) {
$element = csl_factory::create($node, $citeproc);
if (($element instanceof csl_label)) $element->variable = $var;
if (($element instanceof csl_name) && $etal) {
$element->etal = $etal;
}
$this->add_element($element);
}
}
}
function render($data, $mode = NULL) {
$matches = array();
$variable_parts = array();
if (!isset($this->delimiter)) {
$style_delimiter = $this->citeproc->style->{'names-delimiter'};
$mode_delimiter = $this->citeproc->{$mode}->{'names-delimiter'};
$this->delimiter = (isset($mode_delimiter)) ? $mode_delimiter : (isset($style_delimiter) ? $style_delimiter : '');
}
$variables = explode(' ', $this->variable);
foreach ($variables as $var) {
if (in_array($var, $this->citeproc->quash)) continue;
if (isset($data->{$var}) && (!empty($data->{$var}))) {
$matches[] = $var;
}
}
if (empty($matches)) { // we don't have any primary suspects, so lets check the substitutes...
if (isset($this->substitutes)) {
foreach ($this->substitutes->elements as $element) {
if (($element instanceof csl_names)) { //test to see if any of the other names variables has content
$sub_variables = explode(' ', $element->variable);
foreach ($sub_variables as $var) {
if (isset($data->{$var}) ) {
$matches[] = $var;
$this->citeproc->quash[] = $var;
}
}
}
else { // if it's not a "names" element, just render it
$text = $element->render($data, $mode);
$this->citeproc->quash[] = isset($element->variable) ? $element->variable : $element->var;
if (!empty($text)) $variable_parts[] = $text;
}
if (!empty($matches)) break;
}
}
}
foreach ($matches as $var) {
if (in_array($var, $this->citeproc->quash) && in_array($var, $variables)) continue;
$text = '';
if (!empty($data->{$var})) {
foreach ($this->elements as $element) {
if(is_a($element, 'csl_label')) {
$element->variable = $var;
$text .= $element->render($data, $mode);
}
elseif (is_a($element, 'csl_name')) {
$text .= $element->render($data->{$var}, $mode);
}
}
}
if (!empty($text)) $variable_parts[] = $text;
}
if (!empty($variable_parts)) {
$text = implode($this->delimiter, $variable_parts);
return $this->format($text);
}
return ;
}
}
class csl_date extends csl_format {
function init($dom_node, $citeproc) {
$locale_elements = array();
if ($form = $this->form) {
$local_date = $this->citeproc->get_locale('date_options', $form);
$dom_elem = dom_import_simplexml($local_date[0]);
if ($dom_elem) {
foreach ($dom_elem->childNodes as $node) {
if ($node->nodeType == 1) {
$locale_elements[] = csl_factory::create($node, $citeproc);
}
}
}
foreach ($dom_node->childNodes as $node) {
if ($node->nodeType == 1) {
$element = csl_factory::create($node, $citeproc);
foreach ($locale_elements as $key => $locale_element) {
if ($locale_element->name == $element->name) {
$locale_elements[$key]->attributes = array_merge($locale_element->attributes, $element->attributes);
$locale_elements[$key]->format = $element->format;
break;
}
else {
$locale_elements[] = $element;
}
}
}
}
if ($date_parts = $this->{'date-parts'}) {
$parts = explode('-', $date_parts);
foreach ($locale_elements as $key => $element) {
if (array_search($element->name, $parts) === FALSE) {
unset($locale_elements[$key]);
}
}
if (count($locale_elements) != count($parts)) {
foreach ($parts as $part) {
$element = new csl_date_part();
$element->name = $part;
$locale_elements[] = $element;
}
}
// now re-order the elements
foreach ($parts as $part) {
foreach ($locale_elements as $key => $element)
if ($element->name == $part) {
$this->elements[] = $element;
unset($locale_elements[$key]);
}
}
}
else {
$this->elements = $locale_elements;
}
}
else {
parent::init($dom_node, $citeproc);
}
}
function render($data, $mode = NULL) {
$date_parts = array();
$date = '';
$text = '';
if (($var = $this->variable) && isset($data->{$var})) {
$date = $data->{$var}->{'date-parts'}[0];
foreach ($this->elements as $element) {
$date_parts[] = $element->render($date, $mode);
}
$text = implode('', $date_parts);
}
return $this->format($text);
}
}
class csl_date_part extends csl_format {
function render($date, $mode = NULL) {
$text = '';
switch ($this->name) {
case 'year':
$text = (isset($date[0])) ? $date[0] : '';
if ($text > 0 && $text < 500) {
$text = $text . $this->citeproc->get_locale('term', 'ad');
}
elseif ($text < 0) {
$text = $text * -1;
$text = $text . $this->citeproc->get_locale('term', 'bc');
}
//return ((isset($this->prefix))? $this->prefix : '') . $date[0] . ((isset($this->suffix))? $this->suffix : '');
break;
case 'month':
$text = (isset($date[1])) ? $date[1] : '';
if (empty($text) || $text < 1 || $text > 12) return;
// $form = $this->form;
switch ($this->form) {
case 'numeric': break;
case 'numeric-leading-zeros':
if ($text < 10) {
$text = '0' . $text;
break;
}
break;
case 'short':
$month = 'month-' . sprintf('%02d', $text);
$text = $this->citeproc->get_locale('term', $month, 'short');
break;
default:
$month = 'month-' . sprintf('%02d', $text);
$text = $this->citeproc->get_locale('term', $month);
break;
}
break;
case 'day':
$text = (isset($date[2])) ? $date[2] : '';
break;
}
return $this->format($text);
}
}