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package org.apache.camel.util; |
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import java.io.UnsupportedEncodingException; |
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import java.net.URI; |
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import java.net.URISyntaxException; |
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import java.net.URLDecoder; |
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import java.net.URLEncoder; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.Map; |
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public class URISupport { |
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public static class CompositeData { |
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public String host; |
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String scheme; |
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String path; |
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URI components[]; |
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Map parameters; |
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String fragment; |
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public URI[] getComponents() { |
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return components; |
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} |
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public String getFragment() { |
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return fragment; |
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} |
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public Map getParameters() { |
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return parameters; |
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} |
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public String getScheme() { |
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return scheme; |
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} |
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public String getPath() { |
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return path; |
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} |
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public String getHost() { |
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return host; |
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} |
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public URI toURI() throws URISyntaxException { |
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StringBuffer sb = new StringBuffer(); |
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if (scheme != null) { |
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sb.append(scheme); |
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sb.append(':'); |
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} |
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if (host != null && host.length() != 0) { |
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sb.append(host); |
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} else { |
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sb.append('('); |
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for (int i = 0; i < components.length; i++) { |
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if (i != 0) { |
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sb.append(','); |
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} |
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sb.append(components[i].toString()); |
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} |
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sb.append(')'); |
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} |
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if (path != null) { |
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sb.append('/'); |
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sb.append(path); |
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} |
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if (!parameters.isEmpty()) { |
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sb.append("?"); |
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sb.append(createQueryString(parameters)); |
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} |
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if (fragment != null) { |
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sb.append("#"); |
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sb.append(fragment); |
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} |
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return new URI(sb.toString()); |
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} |
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} |
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public static Map parseQuery(String uri) throws URISyntaxException { |
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try { |
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Map rc = new HashMap(); |
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if (uri != null) { |
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String[] parameters = uri.split("&"); |
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for (int i = 0; i < parameters.length; i++) { |
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int p = parameters[i].indexOf("="); |
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if (p >= 0) { |
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String name = URLDecoder.decode(parameters[i].substring(0, p), "UTF-8"); |
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String value = URLDecoder.decode(parameters[i].substring(p + 1), "UTF-8"); |
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rc.put(name, value); |
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} else { |
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rc.put(parameters[i], null); |
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} |
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} |
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} |
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return rc; |
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} catch (UnsupportedEncodingException e) { |
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throw (URISyntaxException)new URISyntaxException(e.toString(), "Invalid encoding").initCause(e); |
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} |
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} |
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public static Map parseParamters(URI uri) throws URISyntaxException { |
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String query = uri.getQuery(); |
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if (query == null) { |
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String schemeSpecificPart = uri.getSchemeSpecificPart(); |
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int idx = schemeSpecificPart.lastIndexOf('?'); |
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if (idx < 0) { |
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return Collections.EMPTY_MAP; |
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} else { |
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query = schemeSpecificPart.substring(idx + 1); |
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} |
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} else { |
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query = stripPrefix(query, "?"); |
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} |
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return parseQuery(query); |
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} |
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public static URI removeQuery(URI uri) throws URISyntaxException { |
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return createURIWithQuery(uri, null); |
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} |
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public static URI createURIWithQuery(URI uri, String query) throws URISyntaxException { |
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return new URI(uri.getScheme(), uri.getUserInfo(), uri.getHost(), uri.getPort(), uri.getPath(), |
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query, uri.getFragment()); |
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} |
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public static CompositeData parseComposite(URI uri) throws URISyntaxException { |
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CompositeData rc = new CompositeData(); |
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rc.scheme = uri.getScheme(); |
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String ssp = stripPrefix(uri.getSchemeSpecificPart().trim(), "//").trim(); |
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parseComposite(uri, rc, ssp); |
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rc.fragment = uri.getFragment(); |
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return rc; |
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} |
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private static void parseComposite(URI uri, CompositeData rc, String ssp) throws URISyntaxException { |
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String componentString; |
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String params; |
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if (!checkParenthesis(ssp)) { |
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throw new URISyntaxException(uri.toString(), "Not a matching number of '(' and ')' parenthesis"); |
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} |
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int p; |
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int intialParen = ssp.indexOf("("); |
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if (intialParen == 0) { |
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rc.host = ssp.substring(0, intialParen); |
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p = rc.host.indexOf("/"); |
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if (p >= 0) { |
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rc.path = rc.host.substring(p); |
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rc.host = rc.host.substring(0, p); |
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} |
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p = ssp.lastIndexOf(")"); |
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componentString = ssp.substring(intialParen + 1, p); |
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params = ssp.substring(p + 1).trim(); |
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} else { |
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componentString = ssp; |
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params = ""; |
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} |
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String components[] = splitComponents(componentString); |
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rc.components = new URI[components.length]; |
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for (int i = 0; i < components.length; i++) { |
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rc.components[i] = new URI(components[i].trim()); |
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} |
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p = params.indexOf("?"); |
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if (p >= 0) { |
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if (p > 0) { |
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rc.path = stripPrefix(params.substring(0, p), "/"); |
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} |
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rc.parameters = parseQuery(params.substring(p + 1)); |
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} else { |
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if (params.length() > 0) { |
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rc.path = stripPrefix(params, "/"); |
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} |
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rc.parameters = Collections.EMPTY_MAP; |
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} |
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} |
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private static String[] splitComponents(String str) { |
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ArrayList l = new ArrayList(); |
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int last = 0; |
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int depth = 0; |
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char chars[] = str.toCharArray(); |
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for (int i = 0; i < chars.length; i++) { |
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switch (chars[i]) { |
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case '(': |
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depth++; |
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break; |
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case ')': |
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depth--; |
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break; |
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case ',': |
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if (depth == 0) { |
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String s = str.substring(last, i); |
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l.add(s); |
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last = i + 1; |
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} |
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break; |
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default: |
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} |
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} |
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String s = str.substring(last); |
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if (s.length() != 0) { |
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l.add(s); |
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} |
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String rc[] = new String[l.size()]; |
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l.toArray(rc); |
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return rc; |
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} |
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public static String stripPrefix(String value, String prefix) { |
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if (value.startsWith(prefix)) { |
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return value.substring(prefix.length()); |
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} |
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return value; |
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} |
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public static URI stripScheme(URI uri) throws URISyntaxException { |
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return new URI(stripPrefix(uri.getSchemeSpecificPart().trim(), "//")); |
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} |
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public static String createQueryString(Map options) throws URISyntaxException { |
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try { |
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if (options.size() > 0) { |
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StringBuffer rc = new StringBuffer(); |
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boolean first = true; |
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for (Iterator iter = options.keySet().iterator(); iter.hasNext();) { |
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if (first) { |
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first = false; |
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} else { |
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rc.append("&"); |
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} |
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String key = (String)iter.next(); |
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String value = (String)options.get(key); |
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rc.append(URLEncoder.encode(key, "UTF-8")); |
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rc.append("="); |
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rc.append(URLEncoder.encode(value, "UTF-8")); |
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} |
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return rc.toString(); |
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} else { |
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return ""; |
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} |
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} catch (UnsupportedEncodingException e) { |
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throw (URISyntaxException)new URISyntaxException(e.toString(), "Invalid encoding").initCause(e); |
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} |
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} |
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public static URI createRemainingURI(URI originalURI, Map params) throws URISyntaxException { |
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String s = createQueryString(params); |
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if (s.length() == 0) { |
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s = null; |
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} |
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return createURIWithQuery(originalURI, s); |
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} |
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public static URI changeScheme(URI bindAddr, String scheme) throws URISyntaxException { |
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return new URI(scheme, bindAddr.getUserInfo(), bindAddr.getHost(), bindAddr.getPort(), bindAddr |
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.getPath(), bindAddr.getQuery(), bindAddr.getFragment()); |
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} |
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public static boolean checkParenthesis(String str) { |
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boolean result = true; |
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if (str != null) { |
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int open = 0; |
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int closed = 0; |
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int i = 0; |
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while ((i = str.indexOf('(', i)) >= 0) { |
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i++; |
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open++; |
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} |
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i = 0; |
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while ((i = str.indexOf(')', i)) >= 0) { |
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i++; |
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closed++; |
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} |
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result = open == closed; |
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} |
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return result; |
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} |
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public int indexOfParenthesisMatch(String str) { |
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int result = -1; |
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return result; |
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} |
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} |