Re: [xwiki-devs] [xwiki-notifications] r14425 - sandbox/xwiki-plugin-officeimporter/src/main/java/com/xpn/xwiki/plugin/officeimporter/filter

Author: asiri Date: 2008-11-24 18:08:51 +0100 (Mon, 24 Nov 2008) New Revision: 14425 Modified: sandbox/xwiki-plugin-officeimporter/src/main/java/com/xpn/xwiki/ plugin/officeimporter/filter/RedundantTagFilter.java Log: XAOFFICE-1 : Develop the initial feature set for office-importer plugin. * Added support for filtering empty / redundant paragraphs. Modified: sandbox/xwiki-plugin-officeimporter/src/main/java/com/xpn/ xwiki/plugin/officeimporter/filter/RedundantTagFilter.java =================================================================== --- sandbox/xwiki-plugin-officeimporter/src/main/java/com/xpn/xwiki/ plugin/officeimporter/filter/RedundantTagFilter.java 2008-11-24 15:17:17 UTC (rev 14424) +++ sandbox/xwiki-plugin-officeimporter/src/main/java/com/xpn/xwiki/ plugin/officeimporter/filter/RedundantTagFilter.java 2008-11-24 17:08:51 UTC (rev 14425) @@ -31,12 +31,13 @@ public void filter(Document document, ImporterContext context) { - for(String key : attributeWiseFilteredTags) { + for (String key : attributeWiseFilteredTags) { filterNodesWithZeroAttributes(document.getElementsByTagName(key)); } - for(String key : contentWiseFilteredTags) { + for (String key : contentWiseFilteredTags) { filterNodesWithEmptyTextContent(document.getElementsByTagName(key)); - } + } + filterEmptyParagraphs(document); } /** @@ -70,10 +71,35 @@ { for (int i = 0; i < elements.getLength(); i++) { Element element = (Element) elements.item(i); - if (element.getTextContent().trim().equals("")) { + if (element.getTextContent().trim().equals("")) { element.getParentNode().removeChild(element); i--; } } } + + /** + * OpenOffice server generates redundant paragraphs (with empty content) to achieve spacing. + * These paragraphs should be stripped off / replaced with {@code <br/>} elements appropriately + * because otherwise they result in spurious {@code (%%)} elements in generated xwiki content. + * + * @param document The html document. + */ + private void filterEmptyParagraphs(Document document) + { + NodeList paragraphs = document.getElementsByTagName("p"); + for (int i = 0; i < paragraphs.getLength(); i++) { + Element paragraph = (Element) paragraphs.item(i); + if (paragraph.getTextContent().trim().equals("")) { + // We suspect this is an empty paragraph but it is possible that it contains other + // non-textual tags like images. For the moment we'll only search for internal image + // tags, we might have to refine this criterion later. + NodeList internalImages = paragraph.getElementsByTagName("img"); + if (internalImages.getLength() == 0) { + paragraph.getParentNode().removeChild(paragraph); + i--; + } + } + } + } }