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--- dev:translators_reference_guide [2009/06/30 12:40] – rmzelle
+++ dev:translators_reference_guide [2017/11/12 19:53] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+<html><p id="zotero-5-update-warning" style="color: red; font-weight: bold">We’re
+in the process of updating the documentation for
+<a href="https://www.zotero.org/blog/zotero-5-0">Zotero 5.0</a>. Some documentation
+may be outdated in the meantime. Thanks for your understanding.</p></html>
 ====== Zotero Translators - The Missing Manual ======
 ===== Tools of the Trade =====
-Zotero (discuss tricky business of choosing Zotero 1.0.x or Zotero 2.0), Scaffold, Xpather (http://xpath.alephzarro.com/) [requires DOM Inspector, https://developer.mozilla.org/En/DOM_Inspector], Firebug (http://getfirebug.com/)
+Writing Zotero translators can be made much easier by using the right tools. Here are some suggested downloads:
-===== Translator Metadata =====
-Each translator is described by several metadata fields. For the stand-alone javascript translator files in Zotero 2.0, this metadata is included at the beginning of the file in a JSON block, e.g.:
-<code>{
-	"translatorID":"fcf41bed-0cbc-3704-85c7-8062a0068a7a",
-	"translatorType":12,
-	"label":"NCBI PubMed",
-	"creator":"Simon Kornblith and Michael Berkowitz",
-	"target":"http://[^/]*www\\.ncbi\\.nlm\\.nih\\.gov[^/]*/(pubmed|sites/entrez|entrez/query\\.fcgi\\?.*db=PubMed)",
-	"minVersion":"1.0.0b3.r1",
-	"maxVersion":"",
-	"priority":100,
-	"inRepository":true,
-	"lastUpdated":"2008-12-15 00:25:00"
-}</code>
-A description of the metadata fields:
+  * [[/|Zotero]] - writers of Zotero translators naturally can't do without a copy of Zotero.
+  * [[/support/dev/scaffold|Scaffold]] - this tool offers an easy and quick way to modify and test translators.
+  * XPath tools - most translators rely on XPath to extract information from HTML web pages or from XML data files. To quickly construct robust XPaths, consider using one of the following tools:
+    * [[http://getfirebug.com/|Firebug]] - a popular and very powerful tool. Very useful in inspecting the HTML structure of web pages, and finding XPaths to the elements of interest.
+    * [[http://xpath.alephzarro.com/|XPather]]/[[https://addons.mozilla.org/en-US/firefox/addon/6622|DOM Inspector]] - XPather, which requires the DOM Inspector extension to be installed, is mostly useful for testing XPaths. Recommended in combination with Firebug.
-  * **translatorID** \\ The internal ID by which Zotero identifies the translator. It is recommended to use a [[http://en.wikipedia.org/wiki/Globally_Unique_Identifier|GUID]] (GUIDs can be automatically generated in [[scaffold|Scaffold]]). As the translatorID is used for automatic updating of translators, and for calling translators within other translators, using stable GUIDs is strongly recommended.
-  * **translatorType** \\ Four types of translator exist, web translators being the most common. The four types are: import (1), export (2), web (4) and search (8). The value of translatorType should be the number listed after the relevant type. Some translators belong to multiple types. In those cases, the value of translatorType is the sum of the types (e.g. an web/search translator will have a translatorType value of 12). In [[scaffold|Scaffold]] the translatorType is set with checkboxes.
-  * **label** \\ The name of the translator
-  * **creator** \\ The author(s) of the translator
-  * **target** \\ For web translators, the target should specify a [[https://developer.mozilla.org/En/Core_JavaScript_1.5_Guide/Regular_Expressions|Javascript regular expression]]. Whenever a page is loaded, Zotero tests the target regular expressions of all web translators on the webpage URL. Of the matching translators, the translator with the lowest priority number will be used for that page. The translator's DetectCode function is run, and a Zotero item icon will appear in the address bar if an item is found.
-  * **minVersion** \\ The minimum version of Zotero for which the translators works properly
-  * **maxVersion** \\ The maximum version of Zotero for which the translators works properly
-  * **priority** \\ The priority number is used to determine which translator should be used, if multiple translators are found to be able to translate a certain web page. A lower number indicates a higher priority.
-  * **inRepository** \\ FIXME No clue what this is for
-  * **lastUpdated** \\ The date and time when the translator was last modified (format YYYY-MM-DD HH:MM:SS). Scaffold automatically updates this fields when the translator is saved (or run).
 ===== Zotero.Utilities =====
@@ Line 44: / Line 27: @@
 === cleanAuthor ===
-https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L40
 **Function description** \\
+https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L40
 Zotero.Utilities.prototype.cleanAuthor = function(author, type, useComma) \\
 @param {String} author Creator string \\
@@ Line 67: / Line 50: @@
 </code>
-=== Zotero.Utilities.trim ===
+=== trim ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L85
-**Function description** \\
 Zotero.Utilities.prototype.trim = function(s) \\
 @type String
@@ Line 76: / Line 58: @@
 Removes leading and trailing whitespace from a string
-=== Zotero.Utilities.cleanString ===
+=== trimInternal ===
+**Function description** \\
+https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L98
+Zotero.Utilities.prototype.trimInternal = function(s)
+@type String
-https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L114
+Cleans whitespace off a string and replaces multiple spaces with one
-Zotero.Utilities.superCleanString
+=== cleanString ===
+Deprecated function, use trimInternal instead.
+=== superCleanString ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L123
+Zotero.Utilities.prototype.superCleanString = function(x)
+@type String
-Zotero.Utilities.cleanTags
+Cleans any non-word non-parenthesis characters off the ends of a string
+=== cleanTags ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L136
+Zotero.Utilities.prototype.cleanTags = function(x)
+@type String
-Zotero.Utilities.htmlSpecialChars
+Eliminates HTML tags, replacing each instance of <br> with a newline
+=== htmlSpecialChars ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L153
+Zotero.Utilities.prototype.htmlSpecialChars = function(str)
+@type String
+Escapes several predefined characters:
+  * & (ampersand) becomes &amp;
+  * " (double quote) becomes &quot;
+  * ' (single quote) becomes &#039;
+  * < (less than) becomes &lt;
+  * > (greater than) becomes &gt;
+and
+  * <ZOTEROBREAK/> becomes <br/>
+  * <ZOTEROHELLIP> becomes &#8230;
-Zotero.Utilities.unescapeHTML
+=== unescapeHTML ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L189
+Zotero.Utilities.prototype.unescapeHTML = function(str)
+@type String
-Zotero.Utilities.parseMarkup
+Converts all HTML entities in a string into Unicode characters.
+=== parseMarkup ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L206
+Zotero.Utilities.prototype.parseMarkup = function(str)
+@return {Array} An array of objects with the following form:
+{
+type: 'text'|'link',
+text: "text content",
+[ attributes: { key1: val [ , key2: val, ...] }
+}</pre>
-Zotero.Utilities.isInt
+Parses a text string for HTML/XUL markup and returns an array of parts. Currently only finds HTML links (<a> tags)
+=== isInt ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L247
+Zotero.Utilities.prototype.isInt = function(x)
+@deprecated Use isNaN(parseInt(x))
+@type Boolean
-Zotero.Utilities.getPageRange
+Tests if a string is an integer
+=== getPageRange ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L260
+Zotero.Utilities.prototype.getPageRange = function(pages)
+@param {String} Page range to parse
+@return {Integer[]} Start and end pages
-Zotero.Utilities.lpad
+Parses a page range
+=== lpad ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L283
+Zotero.Utilities.prototype.lpad = function(string, pad, length)
+@param {String} string String to pad
+@param {String} pad String to use as padding
+@length {Integer} length Length of new padded string
+@type String
+Pads a number or other string with a given string on the left
+=== getLocalizedCreatorType ===
+**Function description** \\
+https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L342
+Zotero.Utilities.prototype.capitalizeTitle = function(string, force)
+@param {String} string
+@param {Boolean} force Forces title case conversion, even if the capitalizeTitles pref is off
+@type String
+Cleans a title, converting it to title case and replacing " :" with ":"
+==== Other functions ====
-Zotero.Utilities.itemTypeExists
+=== itemTypeExists ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L297
+Zotero.Utilities.prototype.itemTypeExists = function(type)
+@param {String} type Item type
+@type Boolean
-Zotero.Utilities.getCreatorsForType
+Tests if an item type exists (FIXME: what is the use case for this?)
+=== getCreatorsForType ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L311
+Zotero.Utilities.prototype.getCreatorsForType = function(type)
+@param {String} type Item type
+@return {String[]} Creator types
-Zotero.Utilities.getLocalizedCreatorType
+Find valid creator types for a given item type (FIXME: what is the use case for this?)
+=== getLocalizedCreatorType ===
+**Function description** \\
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L327
+Zotero.Utilities.prototype.getLocalizedCreatorType = function(type)
+@param {String} type Creator type
+@param {String} Localized creator type
+@type Boolean
-Zotero.Utilities.capitalizeTitle
+Gets a creator type name, localized to the current locale (FIXME: what is the use case for this?)
-https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L342
 Zotero.Utilities.processAsync
 https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/content/zotero/xpcom/utilities.js#L361
+To Do:
+processDocuments, HTTP.doGet, HTTP.doPost, getItemArray
 ===== Item properties =====
@@ Line 123: / Line 202: @@
 Especially for screen scraper translators, knowing which item types (''book'', ''journalArticle'', etc) and item fields (''title'', ''url'', etc) exist in Zotero can be very helpful. Fortunately, the possible item properties can be found in the following source code file (types are listed as "itemTypes" entries, fields as "itemFields"):
-https://www.zotero.org/trac/browser/extension/branches/1.0/chrome/locale/en-US/zotero/zotero.properties#L154
+http://aurimasv.github.io/z2csl/typeMap.xml
 Note that the different item types make use of different combinations of item fields (e.g. the ''book'' item type has the field ''ISBN'', while the ''journalArticle'' item type lacks this field).