/**
* Main entry point: Handles a match in the post
*/
function process(&$matches)
{
global $wpdb, $papercite_table_name;
$debug = false;
$post = null;
//print(get_post($post)->post_modified_gmt);
// --- Initialisation ---
// Includes once the bibtex parser
require_once dirname(__FILE__) . "/lib/BibTex_" . $this->options["bibtex_parser"] . ".php";
// Includes once the converter
require_once "bib2tpl/bibtex_converter.php";
// Get the options
$command = $matches[1];
// Get all the options pairs and store them
// in the $options array
$options_pairs = array();
preg_match_all("/\\s*(?:([\\w-_]+)=(\\S+))(\\s+|\$)/", $matches[2], $options_pairs, PREG_SET_ORDER);
// Set preferences, by order of increasing priority
// (0) Set in
// (1) From the preferences
// (2) From the custom fields
// (3) From the general options
// $this->options has already processed the steps 0-2
$options = $this->options;
// Gets the options from the command
foreach ($options_pairs as $x) {
if ($x[1] == "template") {
// Special case of template: should overwrite the corresponding command template
$options["{$command}_{$x['1']}"] = $x[2];
} else {
$options[$x[1]] = $x[2];
}
}
// --- Compatibility issues
if (array_key_exists("groupByYear", $options) && strtoupper($options["groupByYear"]) == "TRUE") {
$options["group"] = "year";
$options["group_order"] = "desc";
}
$tplOptions = array("anonymous-whole" => true, "group" => $options["group"], "group_order" => $options["group_order"], "sort" => $options["sort"], "order" => $options["order"], "key_format" => $options["key_format"]);
$data = null;
// --- Process the commands ---
switch ($command) {
// bibtex command:
case "bibtex":
// --- Filter the data
$entries = $this->getData($options["file"], $options["timeout"]);
if (!$entries) {
return "<span style='color: red'>[Could not find the bibliography file(s)]</span>";
}
if (array_key_exists('key', $options)) {
// Select only specified entries
$keys = split(",", $options["key"]);
$a = array();
$n = 0;
$result = papercite::getEntriesByKey($entries, $keys);
} else {
// Based on the entry types
$allow = $options["allow"];
$deny = $options["deny"];
$allow = $allow ? split(",", $allow) : array();
$deny = $deny ? split(",", $deny) : array();
$result = array();
$dbs = array();
foreach ($entries as $key => &$outer) {
if ($outer == "__DB__") {
$dbs[] = $key;
} else {
foreach ($outer as &$entry) {
$t =& $entry["entrytype"];
if ((sizeof($allow) == 0 || in_array($t, $allow)) && (sizeof($deny) == 0 || !in_array($t, $deny))) {
$result[] = $entry;
}
}
}
}
// Add DB entries
if ($dbs) {
$dbCond = $this->getDbCond($dbs);
// Construct the query
foreach ($allow as &$v) {
$v = '"' . $wpdb->escape($v) . '"';
}
$allowCond = $allow ? "and entrytype in (" . implode(",", $allow) . ")" : "";
foreach ($deny as &$v) {
$v = '"' . $wpdb->escape($v) . '"';
}
$denyCond = $deny ? "and entrytype not in (" . implode(",", $deny) . ")" : "";
$st = "SELECT data FROM {$papercite_table_name} WHERE {$dbCond} {$denyCond} {$allowCond}";
$rows = $wpdb->get_col($st);
if ($rows) {
foreach ($rows as $data) {
$result[] = maybe_unserialize($data);
}
}
}
}
return $this->showEntries($result, $tplOptions, false, $options["bibtex_template"], $options["format"], "bibtex");
// bibshow / bibcite commands
// bibshow / bibcite commands
case "bibshow":
$data = $this->getData($options["file"]);
if (!$data) {
return "<span style='color: red'>[Could not find the bibliography file(s)]</span>";
}
// TODO: replace this by a method call
$refs = array("__DB__" => array());
foreach ($data as $bib => &$outer) {
// If we have a database backend for a bibtex, use it
if ($outer == "__DB__") {
array_push($refs["__DB__"], $bib);
} else {
foreach ($outer as &$entry) {
$key = $entry["cite"];
$refs[$key] =& $entry;
}
}
}
$this->bibshow_tpl_options[] = $tplOptions;
$this->bibshow_options[] = $options;
array_push($this->bibshows, &$refs);
$this->cites[] = array();
break;
// Just cite
// Just cite
case "bibcite":
if (sizeof($this->bibshows) == 0) {
return "[<span title=\"Unkown reference: {$options['key']}\">?</span>]";
}
$keys = preg_split("/,/", $options["key"]);
$cites =& $this->cites[sizeof($this->cites) - 1];
$returns = "";
foreach ($keys as $key) {
if ($returns) {
$returns .= ", ";
}
// First, get the corresponding entry
$num = $cites[$key];
// Did we already cite this?
if (!$num) {
// no, register this
$id = "BIBCITE%%" . $this->citesCounter . "%";
$this->citesCounter++;
$num = sizeof($cites);
$cites[$key] = array($num, $id);
} else {
// yes, just copy the id
$id = $num[1];
}
$returns .= "{$id}";
}
return "[{$returns}]";
case "/bibshow":
return $this->end_bibshow();
default:
return "[error in papercite: unhandled]";
}
}
/**
* Main entry point: Handles a match in the post
*/
function process(&$matches) {
$debug = false;
$post = null;
//print(get_post($post)->post_modified_gmt);
// --- Initialisation ---
// Includes once
switch($this->options["bibtex_parser"]) {
case "papercite":
// Use papercite parser
require_once(dirname(__FILE__) . "/lib/BibTex_parser.php");
break;
default:
// Use the slightly modified BibTex parser from PEAR.
require_once(dirname(__FILE__) . '/lib/BibTex.php');
break;
}
require_once("bib2tpl/bibtex_converter.php");
// Get the options
$command = $matches[1];
// Get all the options pairs and store them
// in the $options array
$options_pairs = array();
preg_match_all("/\s*(?:([\w-_]+)=(\S+))(\s+|$)/", $matches[2], $options_pairs, PREG_SET_ORDER);
// Set preferences, by order of increasing priority
// (0) Set in
// (1) From the preferences
// (2) From the custom fields
// (3) From the general options
// $this->options has already processed the steps 0-2
$options = $this->options;
// Gets the options from the command
foreach($options_pairs as $x) {
if ($x[1] == "template") {
// Special case of template: should overwrite the corresponding command template
$options["${command}_$x[1]"] = $x[2];
} else
$options[$x[1]] = $x[2];
}
// --- Compatibility issues
if (array_key_exists("groupByYear", $options) && (strtoupper($options["groupByYear"]) == "TRUE")) {
$options["group"] = "year";
$options["group_order"] = "desc";
}
$tplOptions = array(
"anonymous-whole" => true, // for compatibility in the output
"group" => $options["group"], "group_order" => $options["group_order"],
"sort" => $options["sort"], "order" => $options["order"],
"key_format" => $options["key_format"]);
$data = null;
// --- Process the commands ---
switch($command) {
/*
"bibtext" command
*/
case "bibtex":
// --- Filter the data
$entries = $this->getData($options["file"], $options["timeout"]);
if (!$entries) return "<span style='color: red'>[Could not find the bibliography file(s)]</span>";
if (array_key_exists('key', $options)) {
// Select only specified entries
$keys = split(",", $options["key"]);
$a = array();
$n = 0;
$result = papercite::getEntriesByKey($entries, $keys);
} else {
// Based on the entry types
$allow = $options["allow"];
$deny = $options["deny"];
if ($allow || $deny) {
$allow = $allow ? split(",",$allow) : false;
$deny = $deny ? split(",", $deny) : false;
$result = array();
// TODO: replace this by a method call
foreach($entries as &$outer) {
foreach($outer as &$entry) {
$t = &$entry["entrytype"];
if ((!$allow || in_array($t, $allow)) && (!$deny || !in_array($t, $deny))) {
$result[] = $entry;
}
}
}
} else {
$result = array();
foreach($entries as &$outer) {
foreach($outer as &$entry) {
$result[] = $entry;
}
}
}
}
return $this->showEntries($result, $tplOptions, false, $options["bibtex_template"], $options["format"], "bibtex");
/*
bibshow / bibcite commands
*/
case "bibshow":
$data = $this->getData($options["file"]);
if (!$data) return "<span style='color: red'>[Could not find the bibliography file(s)]</span>";
// TODO: replace this by a method call
$refs = array();
foreach($data as $outer) {
foreach($outer as &$entry) {
$key = $entry["cite"];
$refs[$key] = &$entry;
}
}
$this->bibshow_tpl_options[] = $tplOptions;
$this->bibshow_options[] = $options;
array_push($this->bibshows, &$refs);
$this->cites[] = array();
break;
// Just cite
case "bibcite":
if (sizeof($this->bibshows) == 0)
return "[<span title=\"Unkown reference: $options[key]\">?</span>]";
$keys = preg_split("/,/",$options["key"]);
$refs = &$this->bibshows[sizeof($this->bibshows)-1];
$cites = &$this->cites[sizeof($this->cites)-1];
$returns = "";
foreach($keys as $key) {
if ($returns) $returns .= ", ";
// First, get the corresponding entry
if (array_key_exists($key, $refs)) {
$num = $cites[$key];
// Did we already cite this?
if (!$num) {
// no, register this
$id = "BIBCITE%%%" . $this->citesCounter;
$this->citesCounter++;
$num = sizeof($cites);
$cites[$key] = array($num, $id);
}
$returns .= "$id";
} else {
$returns .= "<span title=\"Unkown reference: $key\">?</span>";
}
}
return "[$returns]";
case "/bibshow":
// select from cites
if (sizeof($this->bibshows) == 0) return "";
// Remove the array from the stack
$data = &array_pop($this->bibshows);
$cites = &array_pop($this->cites);
$tplOptions = &array_pop($this->bibshow_tpl_options);
$options = &array_pop($this->bibshow_options);
$refs = array();
// Order the citations according to citation order
// (might be re-ordered latter)
foreach($data as $key => &$entry) {
$num = $cites[$key];
if ($num) {
$refs[$num[0]] = $entry;
$refs[$num[0]]["pKey"] = $num[1];
}
}
ksort($refs);
return $this->showEntries(array_values($refs), $tplOptions, true, $options["bibshow_template"], $options["format"], "bibshow");
default:
return "[error in papercite: unhandled]";
}
}
/** Get entries fullfilling a condition (bibtex & bibfilter) */
function getEntries($options)
{
global $wpdb, $papercite_table_name;
// --- Filter the data
$entries = $this->getData($options["file"], $options);
if ($entries === FALSE) {
$this->addMessage("[Could not find the bibliography file(s) with name [" . htmlspecialchars($options["file"]) . "]");
return false;
}
if (array_key_exists('key', $options)) {
// Select only specified entries
$keys = preg_split("-,-", $options["key"]);
$a = array();
$n = 0;
$result = papercite::getEntriesByKey($entries, $keys);
if (array_key_exists("allow", $options) || array_key_exists("deny", $options) || array_key_exists("author", $options)) {
$this->addMessage("[papercite] Filtering by (key argument) is compatible with filtering by type or author (allow, deny, author arguments)", E_USER_NOTICE);
}
} else {
// Based on the entry types
$allow = Papercite::array_get($options, "allow", "");
$deny = Papercite::array_get($options, "deny", "");
$allow = $allow ? preg_split("-,-", $allow) : array();
$deny = $deny ? preg_split("-,-", $deny) : array();
$author_matcher = new PaperciteAuthorMatcher(Papercite::array_get($options, "author", ""));
$result = array();
$dbs = array();
foreach ($entries as $key => &$outer) {
if (is_array($outer) && $outer[0] == "__DB__") {
$dbs[] = $outer[1];
} else {
foreach ($outer as &$entry) {
$t =& $entry["entrytype"];
if ((sizeof($allow) == 0 || in_array($t, $allow)) && (sizeof($deny) == 0 || !in_array($t, $deny)) && $author_matcher->matches($entry) && Papercite::userFiltersMatch($options["filters"], $entry)) {
$result[] = $entry;
}
}
}
}
// --- Add entries from database
if ($dbs) {
$dbCond = $this->getDbCond($dbs);
// Handles year and entry type by direct SQL
foreach ($allow as &$v) {
$v = '"' . $wpdb->escape($v) . '"';
}
$allowCond = $allow ? "and entrytype in (" . implode(",", $allow) . ")" : "";
foreach ($deny as &$v) {
$v = '"' . $wpdb->escape($v) . '"';
}
$denyCond = $deny ? "and entrytype not in (" . implode(",", $deny) . ")" : "";
// Retrieve and filter further
$st = "SELECT data FROM {$papercite_table_name} WHERE {$dbCond} {$denyCond} {$allowCond}";
$rows = $wpdb->get_col($st);
if ($rows) {
foreach ($rows as $data) {
$entry = maybe_unserialize($data);
if ($author_matcher->matches($entry) && Papercite::userFiltersMatch($options["filters"], $entry)) {
$result[] = $entry;
}
}
}
}
}
return $result;
}
