uri.java

Java有关XML编程需要用到axis 的源代码 把里面bin下的包导入相应的Java工程 进行使用

      }

      // if we get to this point, we need to resolve relative path
      // RFC 2396 5.2 #6
      String path = "";
      String basePath = p_base.getPath();

      // 6a - get all but the last segment of the base URI path
      if (basePath != null && basePath.length() > 0) {
        int lastSlash = basePath.lastIndexOf('/');
        if (lastSlash != -1) {
          path = basePath.substring(0, lastSlash+1);
        }
      }
      else if (m_path.length() > 0) {
          path = "/";
      }

      // 6b - append the relative URI path
      path = path.concat(m_path);

      // 6c - remove all "./" where "." is a complete path segment
      int index = -1;
      while ((index = path.indexOf("/./")) != -1) {
        path = path.substring(0, index+1).concat(path.substring(index+3));
      }

      // 6d - remove "." if path ends with "." as a complete path segment
      if (path.endsWith("/.")) {
        path = path.substring(0, path.length()-1);
      }

      // 6e - remove all "<segment>/../" where "<segment>" is a complete
      // path segment not equal to ".."
      index = 1;
      int segIndex = -1;
      String tempString = null;

      while ((index = path.indexOf("/../", index)) > 0) {
        tempString = path.substring(0, path.indexOf("/../"));
        segIndex = tempString.lastIndexOf('/');
        if (segIndex != -1) {
          if (!tempString.substring(segIndex).equals("..")) {
            path = path.substring(0, segIndex+1).concat(path.substring(index+4));
            index = segIndex;
          }
              else {
            index += 4;
        }
          }
          else {
          index += 4;
      }
      }

      // 6f - remove ending "<segment>/.." where "<segment>" is a
      // complete path segment
      if (path.endsWith("/..")) {
        tempString = path.substring(0, path.length()-3);
        segIndex = tempString.lastIndexOf('/');
        if (segIndex != -1) {
          path = path.substring(0, segIndex+1);
        }
      }
      m_path = path;
    }

 /**
  * Initialize the scheme for this URI from a URI string spec.
  *
  * @param p_uriSpec the URI specification (cannot be null)
  *
  * @exception MalformedURIException if URI does not have a conformant
  *                                  scheme
  */
  private void initializeScheme(String p_uriSpec)
                 throws MalformedURIException {
    int uriSpecLen = p_uriSpec.length();
    int index = 0;
    String scheme = null;
    char testChar = '\0';

    while (index < uriSpecLen) {
      testChar = p_uriSpec.charAt(index);
      if (testChar == ':' || testChar == '/' ||
          testChar == '?' || testChar == '#') {
        break;
      }
      index++;
    }
    scheme = p_uriSpec.substring(0, index);

    if (scheme.length() == 0) {
      throw new MalformedURIException("No scheme found in URI.");
    }
    else {
      setScheme(scheme);
    }
  }

 /**
  * Initialize the authority (either server or registry based)
  * for this URI from a URI string spec.
  *
  * @param p_uriSpec the URI specification (cannot be null)
  * 
  * @return true if the given string matched server or registry
  * based authority
  */
  private boolean initializeAuthority(String p_uriSpec) {
    
    int index = 0;
    int start = 0;
    int end = p_uriSpec.length();

    char testChar = '\0';
    String userinfo = null;

    // userinfo is everything up to @
    if (p_uriSpec.indexOf('@', start) != -1) {
      while (index < end) {
        testChar = p_uriSpec.charAt(index);
        if (testChar == '@') {
          break;
        }
        index++;
      }
      userinfo = p_uriSpec.substring(start, index);
      index++;
    }

    // host is everything up to last ':', or up to 
    // and including ']' if followed by ':'.
    String host = null;
    start = index;
    boolean hasPort = false;
    if (index < end) {
      if (p_uriSpec.charAt(start) == '[') {
          int bracketIndex = p_uriSpec.indexOf(']', start);
          index = (bracketIndex != -1) ? bracketIndex : end;
          if (index+1 < end && p_uriSpec.charAt(index+1) == ':') {
            ++index;
            hasPort = true;
          }
          else {
            index = end;
          }
      }
      else {
          int colonIndex = p_uriSpec.lastIndexOf(':', end);
          index = (colonIndex > start) ? colonIndex : end;
          hasPort = (index != end);
      }
    }
    host = p_uriSpec.substring(start, index);
    int port = -1;
    if (host.length() > 0) {
      // port
      if (hasPort) {
        index++;
        start = index;
        while (index < end) {
          index++;
        }
        String portStr = p_uriSpec.substring(start, index);
        if (portStr.length() > 0) {
          // REVISIT: Remove this code.
          /** for (int i = 0; i < portStr.length(); i++) {
            if (!isDigit(portStr.charAt(i))) {
              throw new MalformedURIException(
                   portStr +
                   " is invalid. Port should only contain digits!");
            }
          }**/
          // REVISIT: Remove this code.
          // Store port value as string instead of integer.
          try {
            port = Integer.parseInt(portStr);
            if (port == -1) --port;
          }
          catch (NumberFormatException nfe) {
            port = -2;
          }
        }
      }
    }
    
    if (isValidServerBasedAuthority(host, port, userinfo)) {
      m_host = host;
      m_port = port;
      m_userinfo = userinfo;
      return true;
    }
    // Note: Registry based authority is being removed from a
    // new spec for URI which would obsolete RFC 2396. If the
    // spec is added to XML errata, processing of reg_name
    // needs to be removed. - mrglavas.
    else if (isValidRegistryBasedAuthority(p_uriSpec)) {
      m_regAuthority = p_uriSpec;
      return true;
    }
    return false;
  }
  
  /**
   * Determines whether the components host, port, and user info
   * are valid as a server authority.
   * 
   * @param host the host component of authority
   * @param port the port number component of authority
   * @param userinfo the user info component of authority
   * 
   * @return true if the given host, port, and userinfo compose
   * a valid server authority
   */
  private boolean isValidServerBasedAuthority(String host, int port, String userinfo) {
    
    // Check if the host is well formed.
    if (!isWellFormedAddress(host)) {
      return false;
    }
    
    // Check that port is well formed if it exists.
    // REVISIT: There's no restriction on port value ranges, but
    // perform the same check as in setPort to be consistent. Pass
    // in a string to this method instead of an integer.
    if (port < -1 || port > 65535) {
      return false;
    }
    
    // Check that userinfo is well formed if it exists.
    if (userinfo != null) {
      // Userinfo can contain alphanumerics, mark characters, escaped
      // and ';',':','&','=','+','$',','
      int index = 0;
      int end = userinfo.length();
      char testChar = '\0';
      while (index < end) {
        testChar = userinfo.charAt(index);
        if (testChar == '%') {
          if (index+2 >= end ||
            !isHex(userinfo.charAt(index+1)) ||
            !isHex(userinfo.charAt(index+2))) {
            return false;
          }
          index += 2;
        }
        else if (!isUserinfoCharacter(testChar)) {
          return false;
        }
        ++index;
      }
    }
    return true;
  }
  
  /**
   * Determines whether the given string is a registry based authority.
   * 
   * @param authority the authority component of a URI
   * 
   * @return true if the given string is a registry based authority
   */
  private boolean isValidRegistryBasedAuthority(String authority) {
    int index = 0;
    int end = authority.length();
    char testChar;
      
    while (index < end) {
      testChar = authority.charAt(index);
      
      // check for valid escape sequence
      if (testChar == '%') {
        if (index+2 >= end ||
            !isHex(authority.charAt(index+1)) ||
            !isHex(authority.charAt(index+2))) {
            return false;
        }
        index += 2;
      }
      // can check against path characters because the set
      // is the same except for '/' which we've already excluded.
      else if (!isPathCharacter(testChar)) {
        return false;
      }
      ++index;
    }
    return true;
  }
      
 /**
  * Initialize the path for this URI from a URI string spec.
  *
  * @param p_uriSpec the URI specification (cannot be null)
  * @param p_nStartIndex the index to begin scanning from
  *
  * @exception MalformedURIException if p_uriSpec violates syntax rules
  */
  private void initializePath(String p_uriSpec, int p_nStartIndex)
                 throws MalformedURIException {
    if (p_uriSpec == null) {
      throw new MalformedURIException(
                "Cannot initialize path from null string!");
    }

    int index = p_nStartIndex;
    int start = p_nStartIndex;
    int end = p_uriSpec.length();
    char testChar = '\0';

    // path - everything up to query string or fragment
    if (start < end) {
        // RFC 2732 only allows '[' and ']' to appear in the opaque part.
        if (getScheme() == null || p_uriSpec.charAt(start) == '/') {
        
            // Scan path.
            // abs_path = "/"  path_segments
            // rel_path = rel_segment [ abs_path ]
            while (index < end) {
                testChar = p_uriSpec.charAt(index);
            
                // check for valid escape sequence
                if (testChar == '%') {
                    if (index+2 >= end ||
                    !isHex(p_uriSpec.charAt(index+1)) ||
                    !isHex(p_uriSpec.charAt(index+2))) {
                        throw new MalformedURIException(
                            "Path contains invalid escape sequence!");
                    }
                    index += 2;
                }
                // Path segments cannot contain '[' or ']' since pchar
                // production was not changed by RFC 2732.
                else if (!isPathCharacter(testChar)) {
                      if (testChar == '?' || testChar == '#') {
                          break;
                      }
                    throw new MalformedURIException(
                        "Path contains invalid character: " + testChar);
                }
                ++index;
            }
        }
        else {
            
            // Scan opaque part.
            // opaque_part = uric_no_slash *uric
            while (index < end) {
                testChar = p_uriSpec.charAt(index);
            
                if (testChar == '?' || testChar == '#') {
                    break;
                  }
                
                // check for valid escape sequence
                if (testChar == '%') {
                    if (index+2 >= end ||
                    !isHex(p_uriSpec.charAt(index+1)) ||
                    !isHex(p_uriSpec.charAt(index+2))) {
                        throw new MalformedURIException(
                            "Opaque part contains invalid escape sequence!");
                    }
                    index += 2;
                }
                // If the scheme specific part is opaque, it can contain '['
                // and ']'. uric_no_slash wasn't modified by RFC 2732, which
                // I've interpreted as an error in the spec, since the 
                // production should be equivalent to (uric - '/'), and uric
                // contains '[' and ']'. - mrglavas
                else if (!isURICharacter(testChar)) {
                    throw new MalformedURIException(
                        "Opaque part contains invalid character: " + testChar);
                }
                ++index;
            }
        }
    }
    m_path = p_uriSpec.substring(start, index);

    // query - starts with ? and up to fragment or end
    if (testChar == '?') {
      index++;