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bib-list.js
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/*!*
* Javascript BibTex Parser v0.1
* Copyright (c) 2008 Simon Fraser University
* @author Steve Hannah <shannah at sfu dot ca>
*
*
* License:
*
* 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/>.
*
*
* Credits:
*
* This library is a port of the PEAR Structures_BibTex parser written
* in PHP (http://pear.php.net/package/Structures_BibTex).
*
* In order to make porting the parser into javascript easier, I have made
* use of many phpjs functions, which are distributed here under the MIT License:
*
*
* More info at: http://kevin.vanzonneveld.net/techblog/category/php2js
*
* php.js is copyright 2008 Kevin van Zonneveld.
*
* Portions copyright Ates Goral (http://magnetiq.com), Legaev Andrey,
* _argos, Jonas Raoni Soares Silva (http://www.jsfromhell.com),
* Webtoolkit.info (http://www.webtoolkit.info/), Carlos R. L. Rodrigues, Ash
* Searle (http://hexmen.com/blog/), Tyler Akins (http://rumkin.com), mdsjack
* (http://www.mdsjack.bo.it), Alexander Ermolaev
* (http://snippets.dzone.com/user/AlexanderErmolaev), Andrea Giammarchi
* (http://webreflection.blogspot.com), Bayron Guevara, Cord, David, Karol
* Kowalski, Leslie Hoare, Lincoln Ramsay, Mick@el, Nick Callen, Peter-Paul
* Koch (http://www.quirksmode.org/js/beat.html), Philippe Baumann, Steve
* Clay, booeyOH
*
* Licensed under the MIT (MIT-LICENSE.txt) license.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL KEVIN VAN ZONNEVELD BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*
* Synopsis:
* ----------
*
* This class provides the following functionality:
* 1. Parse BibTex into a logical data javascript data structure.
* 2. Output parsed BibTex entries as HTML, RTF, or BibTex.
*
*
* The following usage instructions have been copyed and adapted from the PHP instructions located
* at http://pear.php.net/manual/en/package.structures.structures-bibtex.intro.php
* Introduction
* --------------
* Overview
* ----------
* This package provides methods to access information stored in a BibTex
* file. During parsing it is possible to let the data be validated. In
* addition. the creation of BibTex Strings as well as RTF Strings is also
* supported. A few examples
*
* Example 1. Loading a BibTex File and printing the parsed array
* <script src="BibTex.js"></script>
* <script>
* bibtex = new BibTex();
* bibtex.content = content; // the bibtex content as a string
*
* bibtex->parse();
* alert(print_r($bibtex->data,true));
* </script>
*
*
* Options
* --------
* Options can be set either in the constructor or with the method
* setOption(). When setting in the constructor the options are given in an
* associative array. The options are:
*
* - stripDelimiter (default: true) Stripping the delimiter surrounding the entries.
* - validate (default: true) Validation while parsing.
* - unwrap (default: false) Unwrapping entries while parsing.
* - wordWrapWidth (default: false) If set to a number higher one
* that the entries are wrapped after that amount of characters.
* - wordWrapBreak (default: \n) String used to break the line (attached to the line).
* - wordWrapCut (default: 0) If set to zero the line will we
* wrapped at the next possible space, if set to one the line will be
* wrapped exactly after the given amount of characters.
* - removeCurlyBraces (default: false) If set to true Curly Braces will be removed.
*
* Example of setting options in the constructor:
*
* Example 2. Setting options in the constructor
* bibtex = new BibTex({'validate':false, 'unwrap':true});
*
*
* Example of setting options using the method setOption():
*
* Example 62-3. Setting options using setOption
* bibtex = new BibTex();
* bibtex.setOption('validate', false);
* bibtex.setOption('unwrap', true);
*
* Stored Data
* ------------
* The data is stored in the class variable data. This is a a list where
* each entry is a hash table representing one bibtex-entry. The keys of
* the hash table correspond to the keys used in bibtex and the values are
* the corresponding values. Some of these keys are:
*
* - cite - The key used in a LaTeX source to do the citing.
* - entryType - The type of the entry, like techreport, book and so on.
* - author - One or more authors of the entry. This entry is also a
* list with hash tables representing the authors as entries. The
* author has table is explained later.
* - title - Title of the entry.
*
* Author
* ------
* As described before the authors are stored in a list. Every entry
* representing one author as a has table. The hash table consits of four
* keys: first, von, last and jr. The keys are explained in the following
* list:
*
* - first - The first name of the author.
* - von - Some names have a 'von' part in their name. This is usually a sign of nobleness.
* - last - The last name of the author.
* - jr - Sometimes a author is the son of his father and has the
* same name, then the value would be jr. The same is true for the
* value sen but vice versa.
*
* Adding an entry
* ----------------
* To add an entry simply create a hash table with the needed keys and
* values and call the method addEntry().
* Example 4. Adding an entry
* bibtex = new BibTex();
* var addarray = {};
* addarray['entryType'] = 'Article';
* addarray['cite'] = 'art2';
* addarray['title'] = 'Titel of the Article';
* addarray['author'] = [];
* addarray['author'][0]['first'] = 'John';
* addarray['author'][0]['last'] = 'Doe';
* addarray['author'][1]['first'] = 'Jane';
* addarray['author'][1]['last'] = 'Doe';
* bibtex.addEntry(addarray);
*/
// ------------BEGIN PHP FUNCTIONS -------------------------------------------------------------- //
// {{{ array
function array( ) {
// #!#!#!#!# array::$descr1 does not contain valid 'array' at line 258
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_array/
// + version: 805.1716
// + original by: d3x
// * example 1:
CEB7
array('Kevin', 'van', 'Zonneveld');
// * returns 1: ['Kevin', 'van', 'Zonneveld'];
return Array.prototype.slice.call(arguments);
}// }}}
// {{{ array_key_exists
function array_key_exists ( key, search ) {
// Checks if the given key or index exists in the array
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_array_key_exists/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Felix Geisendoerfer (http://www.debuggable.com/felix)
// * example 1: array_key_exists('kevin', {'kevin': 'van Zonneveld'});
// * returns 1: true
// input sanitation
if( !search || (search.constructor !== Array && search.constructor !== Object) ){
return false;
}
return key in search;
}// }}}// {{{ array_keys
function array_keys( input, search_value, strict ) {
// Return all the keys of an array
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_array_keys/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: array_keys( {firstname: 'Kevin', surname: 'van Zonneveld'} );
// * returns 1: {0: 'firstname', 1: 'surname'}
var tmp_arr = new Array(), strict = !!strict, include = true, cnt = 0;
for ( key in input ){
include = true;
if ( search_value != undefined ) {
if( strict && input[key] !== search_value ){
include = false;
} else if( input[key] != search_value ){
include = false;
}
}
if( include ) {
tmp_arr[cnt] = key;
cnt++;
}
}
return tmp_arr;
}// }}}
// {{{ in_array
function in_array(needle, haystack, strict) {
// Checks if a value exists in an array
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_in_array/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: in_array('van', ['Kevin', 'van', 'Zonneveld']);
// * returns 1: true
var found = false, key, strict = !!strict;
for (key in haystack) {
if ((strict && haystack[key] === needle) || (!strict && haystack[key] == needle)) {
found = true;
break;
}
}
return found;
}// }}}
// {{{ sizeof
function sizeof ( mixed_var, mode ) {
// Alias of count()
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_sizeof/
// + version: 804.1712
// + original by: Philip Peterson
// - depends on: count
// * example 1: sizeof([[0,0],[0,-4]], 'COUNT_RECURSIVE');
// * returns 1: 6
// * example 2: sizeof({'one' : [1,2,3,4,5]}, 'COUNT_RECURSIVE');
// * returns 2: 6
return count( mixed_var, mode );
}// }}}
// {{{ count
function count( mixed_var, mode ) {
// Count elements in an array, or properties in an object
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_count/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + input by: _argos
// * example 1: count([[0,0],[0,-4]], 'COUNT_RECURSIVE');
// * returns 1: 6
// * example 2: count({'one' : [1,2,3,4,5]}, 'COUNT_RECURSIVE');
// * returns 2: 6
var key, cnt = 0;
if( mode == 'COUNT_RECURSIVE' ) mode = 1;
if( mode != 1 ) mode = 0;
for (key in mixed_var){
cnt++;
if( mode==1 && mixed_var[key] && (mixed_var[key].constructor === Array || mixed_var[key].constructor === Object) ){
cnt += count(mixed_var[key], 1);
}
}
return cnt;
}// }}}
// {{{ explode
function explode( delimiter, string, limit ) {
// Split a string by string
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_explode/
// + version: 805.1715
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: kenneth
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: d3x
// + bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: explode(' ', 'Kevin van Zonneveld');
// * returns 1: {0: 'Kevin', 1: 'van', 2: 'Zonneveld'}
// * example 2: explode('=', 'a=bc=d', 2);
// * returns 2: ['a', 'bc=d']
var emptyArray = { 0: '' };
// third argument is not required
if ( arguments.length < 2
|| typeof arguments[0] == 'undefined'
|| typeof arguments[1] == 'undefined' )
{
return null;
}
if ( delimiter === ''
|| delimiter === false
|| delimiter === null )
{
return false;
}
if ( typeof delimiter == 'function'
|| typeof delimiter == 'object'
|| typeof string == 'function'
|| typeof string == 'object' )
{
return emptyArray;
}
if ( delimiter === true ) {
delimiter = '1';
}
if (!limit) {
return string.toString().split(delimiter.toString());
} else {
// support for limit argument
var splitted = string.toString().split(delimiter.toString());
var partA = splitted.splice(0, limit - 1);
var partB = splitted.join(delimiter.toString());
partA.push(partB);
return partA;
}
}// }}}
// {{{ implode
function implode( glue, pieces ) {
// Join array elements with a string
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_implode/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: _argos
// * example 1: implode(' ', ['Kevin', 'van', 'Zonneveld']);
// * returns 1: 'Kevin van Zonneveld'
return ( ( pieces instanceof Array ) ? pieces.join ( glue ) : pieces );
}// }}}
// {{{ join
function join( glue, pieces ) {
// Alias of implode()
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_join/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// - depends on: implode
// * example 1: join(' ', ['Kevin', 'van', 'Zonneveld']);
// * returns 1: 'Kevin van Zonneveld'
return implode( glue, pieces );
}// }}}
// {{{ split
function split( delimiter, string ) {
// Split string into array by regular expression
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_split/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// - depends on: explode
// * example 1: split(' ', 'Kevin van Zonneveld');
// * returns 1: {0: 'Kevin', 1: 'van', 2: 'Zonneveld'}
return explode( delimiter, string );
}// }}}
// {{{ str_replace
function str_replace(search, replace, subject) {
// Replace all occurrences of the search string with the replacement string
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_str_replace/
// + version: 805.3114
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Gabriel Paderni
// + improved by: Philip Peterson
// + improved by: Simon Willison (http://simonwillison.net)
// + revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
// - depends on: is_array
// * example 1: str_replace(' ', '.', 'Kevin van Zonneveld');
// * returns 1: 'Kevin.van.Zonneveld'
// * example 2: str_replace(['{name}', 'l'], ['hello', 'm'], '{name}, lars');
// * returns 2: 'hemmo, mars'
var f = search, r = replace, s = subject;
var ra = is_array(r), sa = is_array(s), f = [].concat(f), r = [].concat(r), i = (s = [].concat(s)).length;
while (j = 0, i--) {
while (s[i] = s[i].split(f[j]).join(ra ? r[j] || "" : r[0]), ++j in f){};
};
return sa ? s : s[0];
}// }}}
// {{{ strlen
function strlen( string ){
// Get string length
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_strlen/
// + version: 805.1616
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Sakimori
// * example 1: strlen('Kevin van Zonneveld');
// * returns 1: 19
return ("" + string).length;
}// }}}
// {{{ strpos
function strpos( haystack, needle, offset){
// Find position of first occurrence of a string
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_strpos/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: strpos('Kevin van Zonneveld', 'e', 5);
// * returns 1: 14
var i = haystack.indexOf( needle, offset ); // returns -1
return i >= 0 ? i : false;
}// }}}
// {{{ strrpos
function strrpos( haystack, needle, offset){
// Find position of last occurrence of a char in a string
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_strrpos/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: strrpos('Kevin van Zonneveld', 'e');
// * returns 1: 16
var i = haystack.lastIndexOf( needle, offset ); // returns -1
return i >= 0 ? i : false;
}// }}}
// {{{ strtolower
function strtolower( str ) {
// Make a string lowercase
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_strtolower/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: strtolower('Kevin van Zonneveld');
// * returns 1: 'kevin van zonneveld'
return str.toLowerCase();
}// }}}
// {{{ strtoupper
function strtoupper( str ) {
// Make a string uppercase
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_strtoupper/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: strtoupper('Kevin van Zonneveld');
// * returns 1: 'KEVIN VAN ZONNEVELD'
return str.toUpperCase();
}// }}}
// {{{ substr
function substr( f_string, f_start, f_length ) {
// Return part of a string
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_substr/
// + version: 804.1712
// + original by: Martijn Wieringa
// * example 1: substr('abcdef', 0, -1);
// * returns 1: 'abcde'
if(f_start < 0) {
f_start += f_string.length;
}
if(f_length == undefined) {
f_length = f_string.length;
} else if(f_length < 0){
f_length += f_string.length;
} else {
f_length += f_start;
}
if(f_length < f_start) {
f_length = f_start;
}
return f_string.substring(f_start, f_length);
}// }}}
// {{{ trim
function trim( str, charlist ) {
// Strip whitespace (or other characters) from the beginning and end of a string
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_trim/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: mdsjack (http://www.mdsjack.bo.it)
// + improved by: Alexander Ermolaev (http://snippets.dzone.com/user/AlexanderErmolaev)
// + input by: Erkekjetter
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + input by: DxGx
// + improved by: Steven Levithan (http://blog.stevenlevithan.com)
// * example 1: trim(' Kevin van Zonneveld ');
// * returns 1: 'Kevin van Zonneveld'
// * example 2: trim('Hello World', 'Hdle');
// * returns 2: 'o Wor'
if (!str) { return ''; }
var whitespace;
if(!charlist){
whitespace = ' \n\r\t\f\x0b\xa0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u2028\u2029\u3000';
} else{
whitespace = charlist.replace(/([\[\]\(\)\.\?\/\*\{\}\+\$\^\:])/g, '\$1');
}
for (var i = 0; i < str.length; i++) {
if (whitespace.indexOf(str.charAt(i)) === -1) {
str = str.substring(i);
break;
}
}
for (i = str.length - 1; i >= 0; i--) {
if (whitespace.indexOf(str.charAt(i)) === -1) {
str = str.substring(0, i + 1);
break;
}
}
return whitespace.indexOf(str.charAt(0)) === -1 ? str : '';
}// }}}
// {{{ wordwrap
function wordwrap( str, int_width, str_break, cut ) {
// Wraps a string to a given number of characters
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_wordwrap/
// + version: 804.1715
// + original by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
// + improved by: Nick Callen
// + revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com)
// * example 1: wordwrap('Kevin van Zonneveld', 6, '|', true);
// * returns 1: 'Kevin |van |Zonnev|eld'
var m = int_width, b = str_break, c = cut;
var i, j, l, s, r;
if(m < 1) {
return str;
}
for(i = -1, l = (r = str.split("\n")).length; ++i < l; r[i] += s) {
for(s = r[i], r[i] = ""; s.length > m; r[i] += s.slice(0, j) + ((s = s.slice(j)).length ? b : "")){
j = c == 2 || (j = s.slice(0, m + 1).match(/\S*(\s)?$/))[1] ? m : j.input.length - j[0].length || c == 1 && m || j.input.length + (j = s.slice(m).match(/^\S*/)).input.length;
}
}
return r.join("\n");
}// }}}
// {{{ is_string
function is_string( mixed_var ){
// Find whether the type of a variable is string
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_is_string/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: is_string('23');
// * returns 1: true
// * example 2: is_string(23.5);
// * returns 2: false
return (typeof( mixed_var ) == 'string');
}// }}}
// {{{ ord
function ord( string ) {
// Return ASCII value of character
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_ord/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: ord('K');
// * returns 1: 75
return string.charCodeAt(0);
}// }}}
// {{{ array_unique
function array_unique( array ) {
// Removes duplicate values from an array
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_array_unique/
// + version: 805.211
// + original by: Carlos R. L. Rodrigues (http://www.jsfromhell.com)
// + input by: duncan
// + bufixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// * example 1: array_unique(['Kevin','Kevin','van','Zonneveld']);
// * returns 1: ['Kevin','van','Zonneveld']
var p, i, j, tmp_arr = array;
for(i = tmp_arr.length; i;){
for(p = --i; p > 0;){
if(tmp_arr[i] === tmp_arr[--p]){
for(j = p; --p && tmp_arr[i] === tmp_arr[p];);
i -= tmp_arr.splice(p + 1, j - p).length;
}
}
}
return tmp_arr;
}// }}}
// {{{ print_r
function print_r( array, return_val ) {
// Prints human-readable information about a variable
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_print_r/
// + version: 805.2023
// + original by: Michael White (http://crestidg.com)
// + improved by: Ben Bryan
// * example 1: print_r(1, true);
// * returns 1: 1
var output = "", pad_char = " ", pad_val = 4;
var formatArray = function (obj, cur_depth, pad_val, pad_char) {
if (cur_depth > 0) {
cur_depth++;
}
var base_pad = repeat_char(pad_val*cur_depth, pad_char);
var thick_pad = repeat_char(pad_val*(cur_depth+1), pad_char);
var str = "";
if (obj instanceof Array || obj instanceof Object) {
str += "Array\n" + base_pad + "(\n";
for (var key in obj) {
if (obj[key] instanceof Array || obj[key] instanceof Object) {
str += thick_pad + "["+key+"] => "+formatArray(obj[key], cur_depth+1, pad_val, pad_char);
} else {
str += thick_pad + "["+key+"] => " + obj[key] + "\n";
}
}
str += base_pad + ")\n";
} else {
str = obj.toString();
}
return str;
};
var repeat_char = function (len, pad_char) {
var str = "";
for(var i=0; i < len; i++) {
str += pad_char;
};
return str;
};
output = formatArray(array, 0, pad_val, pad_char);
if (return_val !== true) {
document.write("<pre>" + output + "</pre>");
return true;
} else {
return output;
}
}// }}}
// {{{ is_array
function is_array( mixed_var ) {
// Finds whether a variable is an array
//
// + discuss at: http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_is_array/
// + version: 804.1712
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: Legaev Andrey
// + bugfixed by: Cord
// * example 1: is_array(['Kevin', 'van', 'Zonneveld']);
// * returns 1: true
// * example 2: is_array('Kevin van Zonneveld');
// * returns 2: false
return ( mixed_var instanceof Array );
}// }}}
//------------END PHP FUNCTIONS -------------------------------------------------------------- //
/**
* BibTex
*
* A class which provides common methods to access and
* create Strings in BibTex format+
* Example 1: Parsing a BibTex File and returning the number of entries
* <code>
* bibtex = new BibTex();
* bibtex.content = '....';
*
* bibtex.parse();
* print "There are "+bibtex.amount()+" entries";
* </code>
* Example 2: Parsing a BibTex File and getting all Titles
* <code>
* bibtex = new BibTex();
* bibtex.content="...";
* bibtex.parse();
* for (var i in bibtex.data) {
* alert( bibtex.data[i]['title']+"<br />");
* }
* </code>
* Example 3: Adding an entry and printing it in BibTex Format
* <code>
* bibtex = new BibTex();
* addarray = {}
* addarray['entryType'] = 'Article';
* addarray['cite'] = 'art2';
* addarray['title'] = 'Titel2';
* addarray['author'] = [];
* addarray['author'][0]['first'] = 'John';
* addarray['author'][0]['last'] = 'Doe';
* addarray['author'][1]['first'] = 'Jane';
* addarray['author'][1]['last'] = 'Doe';
* bibtex.addEntry(addarray);
* alert( nl2br(bibtex.bibTex()));
* </code>
*
* @category Structures
* @package BibTex
* @author Steve Hannah <shannah at sfu dot ca>
* @adapted-from Structures_BibTex by Elmar Pitschke <elmar+pitschke@gmx+de>
* @copyright 2008 Simon Fraser University
* @license http://www.gnu.org/licenses/lgpl.html
* @version Release: 0.1
* @link http://webgroup.fas.sfu.ca/projects/JSBibTexParser
*/
function BibTex(options)
{
if ( typeof options == 'undefined' ) options = {};
/**
* Array with the BibTex Data
*
* @access public
* @var array
*/
this.data;
/**
* String with the BibTex content
*
* @access public
* @var string
*/
this.content;
/**
* Array with possible Delimiters for the entries
*
* @access private
* @var array
*/
this._delimiters;
/**
* Array to store warnings
*
* @access public
* @var array
*/
this.warnings;
/**
* Run-time configuration options
*
* @access private
* @var array
*/
this._options;
/**
* RTF Format String
*
* @access public
* @var string
*/
this.rtfstring;
/**
* HTML Format String
*
* @access public
* @var string
*/
this.htmlstring;
/**
* Array with the "allowed" entry types
*
* @access public
* @var array
*/
this.allowedEntryTypes;
/**
* Author Format Strings
*
* @access public
* @var string
*/
this.authorstring;
this._delimiters = {'"':'"',
'{':'}'};
this.data = [];
this.content = '';
//this._stripDelimiter = stripDel;
//this._validate = val;
this.warnings = [];
this._options = {
'stripDelimiter' : true,
'validate' : true,
'unwrap' : false,
'wordWrapWidth' : false,
'wordWrapBreak' : "\n",
'wordWrapCut' : 0,
'removeCurlyBraces' : false,
'extractAuthors' : true
};
for (option in options) {
test = this.setOption(option, options[option]);
if (this.isError(test)) {
//Currently nothing is done here, but it could for example raise an warning
}
}
this.rtfstring = 'AUTHORS, "{\b TITLE}", {\i JOURNAL}, YEAR';
this.htmlstring = 'AUTHORS, "<strong>TITLE</strong>", <em>JOURNAL</em>, YEAR<br />';
this.allowedEntryTypes = array(
'article',
'book',
'booklet',
'confernce',
'inbook',
'incollection',
'inproceedings',
'manual',
'masterthesis',
'misc',
'phdthesis',
'proceedings',
'techreport',
'unpublished'
);
this.authorstring = 'VON LAST, JR, FIRST';
}
BibTex.prototype = {
/**
* Constructor
*
* @access public
* @return void
*/
/**
* Sets run-time configuration options
*
* @access public
* @param string option option name
* @param mixed value value for the option
* @return mixed true on success PEAR_Error on failure
*/
setOption : function(option, value)
{
ret = true;
if (array_key_exists(option, this._options)) {
this._options[option] = value;
} else {
ret = this.raiseError('Unknown option '+option);
}
return ret;
},
/**
* Reads a give BibTex File
*
* @access public
* @param string filename Name of the file
* @return mixed true on success PEAR_Error on failure
*
function loadFile(filename)
{
if (file_exists(filename)) {
if ((this.content = @file_get_contents(filename)) === false) {
return PEAR::raiseError('Could not open file '+filename);
} else {
this._pos = 0;
this._oldpos = 0;
return true;
}
} else {
return PEAR::raiseError('Could not find file '+filename);
}
}
*/
/**
* Parses what is stored in content and clears the content if the parsing is successfull+
*
* @access public
* @return boolean true on success and PEAR_Error if there was a problem
*/
parse: function()
{
//alert("starting to parse");
//The amount of opening braces is compared to the amount of closing braces
//Braces inside comments are ignored
this.warnings = [];
this.data = [];
var valid = true;
var open = 0;
var entry = false;
var charv = '';
var lastchar = '';
var buffer = '';
for (var i = 0; i < strlen(this.content); i++) {
charv = substr(this.content, i, 1);
if ((0 != open) && ('@' == charv)) {
if (!this._checkAt(buffer)) {
this._generateWarning('WARNING_MISSING_END_BRACE', '', buffer);
//To correct the data we need to insert a closing brace
charv = '}';
i--;
}
}
if ((0 == open) && ('@' == charv)) { //The beginning of an entry
entry = true;
} else if (entry && ('{' == charv) && ('\\' != lastchar)) { //Inside an entry and non quoted brace is opening
open++;
} else if (entry && ('}' == charv) && ('\\' != lastchar)) { //Inside an entry and non quoted brace is closing
open--;
if (open < 0) { //More are closed than opened
valid = false;
}
if (0 == open) { //End of entry
entry = false;
var entrydata = this._parseEntry(buffer);
if (!entrydata) {
/**
* This is not yet used+
* We are here if the Entry is either not correct or not supported+
* But this should already generate a warning+
* Therefore it should not be necessary to do anything here
*/
} else {
this.data[this.data.length] = entrydata;
}
buffer = '';
}
}
if (entry) { //Inside entry
buffer += charv;
}
lastchar = charv;
}
//If open is one it may be possible that the last ending brace is missing
if (1 == open) {
entrydata = this._parseEntry(buffer);
if (!entrydata) {
valid = false;
} else {