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2014-10-23 10:53:16 -04:00
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<title>DocStrap Source: driver.js</title>
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2014-10-20 16:56:45 -04:00
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2014-10-23 10:53:16 -04:00
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2014-10-20 16:56:45 -04:00
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2014-10-20 16:56:45 -04:00
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<h1 class="page-title">Source: driver.js</h1>
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<section>
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<article>
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<pre
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class="sunlight-highlight-javascript linenums">'use strict';
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var helpers = require('./helpers');
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/**
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* Base Database Driver
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*
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* @module driver
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*/
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var d = {
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identifierChar: '"',
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tablePrefix: null,
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/**
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* Low level function for naive quoting of strings
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* @param {String} str
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* @return {String}
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* @private
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*/
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_quote: function(str) {
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return (helpers.isString(str) && ! (str.startsWith(d.identifierChar) || str.endsWith(d.identifierChar)))
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? d.identifierChar + str + d.identifierChar
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: str;
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},
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/**
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* Sets the table prefix on the passed string
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*
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* @param {String} str
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* @return {String}
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* @private
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*/
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_prefix: function(str) {
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if (str.startsWith(d.prefix))
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{
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return str;
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}
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return d.prefix + str;
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},
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/**
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* Set the limit clause
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* @param {String} sql
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* @param {Number} limit
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* @param {Number|null} offset
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* @return {String}
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*/
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limit: function(sql, limit, offset) {
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sql += " LIMIT " + limit;
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if (helpers.isNumber(offset))
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{
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sql += " OFFSET " + offset;
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}
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return sql;
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},
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/**
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* Prefixes a table if it is not already prefixed
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*
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* @param {String} table
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* @return {String}
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*/
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prefixTable: function(table) {
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if (d.tablePrefix)
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{
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// Split identifier by period, will split into:
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// database.schema.table OR
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// schema.table OR
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// database.table OR
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// table
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var idents = table.split('.', table);
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var segments = idents.length;
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// Add the database prefix
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idents[segments - 1] = d._prefix(idents[segments - 1]);
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table = idents.join('.');
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}
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return table;
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},
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/**
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* Quote database table name, and set prefix
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*
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* @param {String} table
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* @return {String}
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*/
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quoteTable: function(table) {
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table = d.prefixTable(table);
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// Quote after prefix
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return d.quoteIdentifiers(table);
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},
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/**
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* Use the driver's escape character to quote identifiers
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*
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* @param {String|Array}
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* @return {String|Array}
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*/
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quoteIdentifiers: function(str) {
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var hiers, raw;
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var pattern = new RegExp(d.identifierChar + '(' + '([a-zA-Z0-9_]+)' + '(\((.*?)\))' + ')' + d.identifierChar, 'ig');
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// Recurse for arrays of identifiiers
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if (Array.isArray(str))
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{
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return str.map(d.quoteIdentifiers);
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}
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// Handle commas
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if (str.contains(','))
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{
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var parts = str.split(',').map(helpers.stringTrim);
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str = parts.map(d.quoteIdentifiers).join(',');
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}
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// Split identifiers by period
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hiers = str.split('.').map(d._quote);
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raw = hiers.join('.');
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// Fix functions
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if (raw.contains('(') && raw.contains(')'))
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{
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var funcs = pattern.exec(raw);
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// Unquote the function
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raw = raw.replace(funcs[0], funcs[1]);
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// Quote the identifiers inside of the parens
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var inParens = funcs[3].substring(1, funcs[3].length -1);
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raw = raw.replace(inParens, d.quoteIdentifiers(inParens));
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}
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return raw;
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}
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};
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module.exports = d;</pre>
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</article>
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DocStrap Copyright © 2012-2014 The contributors to the JSDoc3 and DocStrap projects.
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.3.0-alpha9</a>
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on Mon Oct 27th 2014 using the <a
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href="https://github.com/terryweiss/docstrap">DocStrap template</a>.
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$( function () {
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$( "[id*='$']" ).each( function () {
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var $this = $( this );
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anchorName : function ( i, heading, prefix ) {
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return $( heading ).attr( "id" ) || ( prefix + i );
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exampleText = exampleText.replace( lang[0], "" );
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example.html( exampleText );
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lang = "javascript";
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if ( lang ) {
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$this
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.addClass( "sunlight-highlight-" + lang )
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.addClass( "linenums" )
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.html( example.html() );
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}
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} );
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Sunlight.highlightAll( {
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lineNumbers : true,
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showMenu : true,
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} );
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