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Diffstat (limited to 'subsonic-main/src/main/java/net/sourceforge/subsonic/taglib/UrlTag.java')
| -rw-r--r-- | subsonic-main/src/main/java/net/sourceforge/subsonic/taglib/UrlTag.java | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/subsonic-main/src/main/java/net/sourceforge/subsonic/taglib/UrlTag.java b/subsonic-main/src/main/java/net/sourceforge/subsonic/taglib/UrlTag.java deleted file mode 100644 index 141ba847..00000000 --- a/subsonic-main/src/main/java/net/sourceforge/subsonic/taglib/UrlTag.java +++ /dev/null @@ -1,207 +0,0 @@ -/* - This file is part of Subsonic. - - Subsonic 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. - - Subsonic 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 Subsonic. If not, see <http://www.gnu.org/licenses/>. - - Copyright 2009 (C) Sindre Mehus - */ -package net.sourceforge.subsonic.taglib; - -import net.sourceforge.subsonic.Logger; -import net.sourceforge.subsonic.filter.ParameterDecodingFilter; -import net.sourceforge.subsonic.util.StringUtil; -import org.apache.taglibs.standard.tag.common.core.UrlSupport; -import org.apache.commons.lang.CharUtils; - -import javax.servlet.jsp.JspException; -import javax.servlet.jsp.JspTagException; -import javax.servlet.jsp.PageContext; -import javax.servlet.jsp.tagext.BodyTagSupport; -import java.io.IOException; -import java.io.UnsupportedEncodingException; -import java.net.URLEncoder; -import java.util.ArrayList; -import java.util.List; - -/** - * Creates a URL with optional query parameters. Similar to 'c:url', but - * you may specify which character encoding to use for the URL query - * parameters. If no encoding is specified, the following steps are performed: - * <ul> - * <li>Parameter values are encoded as the hexadecimal representation of the UTF-8 bytes of the original string.</li> - * <li>Parameter names are prepended with the suffix "Utf8Hex"</li> - * <li>Note: Nothing is done with the parameter name or value if the value only contains ASCII alphanumeric characters.</li> - * </ul> - * <p/> - * (The problem with c:url is that is uses the same encoding as the http response, - * but most(?) servlet container assumes that ISO-8859-1 is used.) - * - * @author Sindre Mehus - */ -public class UrlTag extends BodyTagSupport { - - private String DEFAULT_ENCODING = "Utf8Hex"; - private static final Logger LOG = Logger.getLogger(UrlTag.class); - - private String var; - private String value; - private String encoding = DEFAULT_ENCODING; - private List<Parameter> parameters = new ArrayList<Parameter>(); - - public int doStartTag() throws JspException { - parameters.clear(); - return EVAL_BODY_BUFFERED; - } - - public int doEndTag() throws JspException { - - // Rewrite and encode the url. - String result = formatUrl(); - - // Store or print the output - if (var != null) - pageContext.setAttribute(var, result, PageContext.PAGE_SCOPE); - else { - try { - pageContext.getOut().print(result); - } catch (IOException x) { - throw new JspTagException(x); - } - } - return EVAL_PAGE; - } - - private String formatUrl() throws JspException { - String baseUrl = UrlSupport.resolveUrl(value, null, pageContext); - - StringBuffer result = new StringBuffer(); - result.append(baseUrl); - if (!parameters.isEmpty()) { - result.append('?'); - - for (int i = 0; i < parameters.size(); i++) { - Parameter parameter = parameters.get(i); - try { - result.append(parameter.getName()); - if (isUtf8Hex() && !isAsciiAlphaNumeric(parameter.getValue())) { - result.append(ParameterDecodingFilter.PARAM_SUFFIX); - } - - result.append('='); - if (parameter.getValue() != null) { - result.append(encode(parameter.getValue())); - } - if (i < parameters.size() - 1) { - result.append("&"); - } - - } catch (UnsupportedEncodingException x) { - throw new JspTagException(x); - } - } - } - return result.toString(); - } - - private String encode(String s) throws UnsupportedEncodingException { - if (isUtf8Hex()) { - if (isAsciiAlphaNumeric(s)) { - return s; - } - - try { - return StringUtil.utf8HexEncode(s); - } catch (Exception x) { - LOG.error("Failed to utf8hex-encode the string '" + s + "'.", x); - return s; - } - } - - return URLEncoder.encode(s, encoding); - } - - private boolean isUtf8Hex() { - return DEFAULT_ENCODING.equals(encoding); - } - - private boolean isAsciiAlphaNumeric(String s) { - if (s == null) { - return true; - } - - for (int i = 0; i < s.length(); i++) { - if (!CharUtils.isAsciiAlphanumeric(s.charAt(i))) { - return false; - } - } - return true; - } - - public void release() { - var = null; - value = null; - encoding = DEFAULT_ENCODING; - parameters.clear(); - super.release(); - } - - public void addParameter(String name, String value) { - parameters.add(new Parameter(name, value)); - } - - public String getVar() { - return var; - } - - public void setVar(String var) { - this.var = var; - } - - public String getValue() { - return value; - } - - public void setValue(String value) { - this.value = value; - } - - public String getEncoding() { - return encoding; - } - - public void setEncoding(String encoding) { - this.encoding = encoding; - } - - /** - * A URL query parameter. - */ - private static class Parameter { - private String name; - private String value; - - private Parameter(String name, String value) { - this.name = name; - this.value = value; - } - - private String getName() { - return name; - } - - private String getValue() { - return value; - } - } -} |