xmlTraverse()

in JSLib/src/xml.js [422:454]

• 20 lines of code
• 8 McCabe index (conditional complexity)

        xmlTraverse(root, false, function (child) {
            if (child.nodeType === 3 || child.nodeType === 4) {
                // isElementContentWhitespace indicates that this is 'ignorable whitespace',
                // but it's not defined by all browsers, and does not honor xml:space='preserve'
                // in some implementations.
                //
                // If we can't tell either way, we walk up the tree to figure out whether
                // xml:space is set to preserve; otherwise we discard pure-whitespace.
                //
                // For example <a>  <b>1</b></a>. The space between <a> and <b> is usually 'ignorable'.
                var text = xmlNodeValue(child);
                var shouldInclude = whitespaceAlreadyRemoved || !isWhitespace(text);
                if (!shouldInclude) {
                    // Walk up the tree to figure out whether we are in xml:space='preserve' context
                    // for the cursor (needs to happen only once).
                    if (whitespacePreserveContext === undefined) {
                        whitespacePreserveContext = isWhitespacePreserveContext(root);
                    }

                    shouldInclude = whitespacePreserveContext;
                }

                if (shouldInclude) {
                    if (!result) {
                        result = text;
                    } else {
                        result += text;
                    }
                }
            }
            // Continue traversing?
            return true;
        });