File	Doc	Category	Size	Date	Package
HostNameParser.java	API Doc	phoneME MR2 API (J2ME)	7727	Wed May 02 18:00:42 BST 2007	gov.nist.core

HostNameParser

• java.lang.Object
  • ParserCore

Fields Summary

Constructors Summary
public HostNameParser(LexerCore lexer) The lexer is initialized with the buffer. param lexer class to use for parsing this.lexer = lexer; lexer.selectLexer("charLexer");

Methods Summary
protected java.lang.String	domainLabel() Gets the domain name. return the domain label exception ParseException if an error occurs parsing StringBuffer retval = new StringBuffer(); char la; if (debug) dbg_enter("domainLabel"); try { while (lexer.hasMoreChars()) { la = lexer.lookAhead(0); if (LexerCore.isAlpha(la)) { lexer.consume(1); retval.append(la); } else if (LexerCore.isDigit(la)) { lexer.consume(1); retval.append(la); } else if (la == '-") { lexer.consume(1); retval.append(la); } else break; } // Debug.println("returning " + retval.toString()); if (retval.length() == 0) { throw new ParseException("Error parsing domain label " + lexer.getBuffer(), lexer.getPtr()); } return retval.toString(); } finally { if (debug) dbg_leave("domainLabel"); }
public java.lang.String	hostName() Gets the host name. return the host name exception ParseException if an error occurs parsing if (debug) dbg_enter("host"); try { StringBuffer hname = new StringBuffer(); // IPv6 referene if (lexer.lookAhead(0) == '[") { hname.append(ipv6Reference()); } // IPv4 address or hostname else { String nextTok = domainLabel(); hname.append(nextTok); while (lexer.hasMoreChars()) { // Reached the end of the buffer. if (lexer.lookAhead(0) == '.") { lexer.consume(1); nextTok = domainLabel(); hname.append("."); hname.append(nextTok); } else break; } } return hname.toString(); } finally { if (debug) dbg_leave("host"); }
public HostPort	hostPort() Gets the host name and port number. return the host name and port number encoded string exception ParseException if an error occurs parsing if (debug) dbg_enter("hostPort"); try { int m = lexer.markInputPosition(); String hostName = this.hostName(); Host host = new Host(); HostPort hp = new HostPort(); boolean parsePort = false; if (StringTokenizer.isDigitString(hostName)) { // maybe server URI lexer.rewindInputPosition(m); // try to port parsing parsePort = true; } else { // save hostname host.setHostname(hostName); } hp.setHost(host); // For some headers (for ex., Via) there may be spaces // between the host name and the port number. lexer.SPorHT(); // Has a port? if (!parsePort && lexer.hasMoreChars() && lexer.lookAhead(0) == ':") { lexer.consume(1); lexer.SPorHT(); parsePort = true; } if (parsePort) { parsePort(lexer, hp); } return hp; } finally { if (debug) dbg_leave("hostPort"); }
protected java.lang.String	ipv6Reference() Gets the IPV6 reference. return the IPV6 address StringBuffer retval = new StringBuffer(); if (debug) dbg_enter("domainLabel"); try { while (lexer.hasMoreChars()) { char la = lexer.lookAhead(0); if (LexerCore.isHexDigit(la)) { lexer.consume(1); retval.append(la); } else if (la == '." || la == ':" || la == '[") { lexer.consume(1); retval.append(la); } else if (la == ']") { lexer.consume(1); retval.append(la); return retval.toString(); } else break; } throw new ParseException (lexer.getBuffer() + ": Illegal Host name ", lexer.getPtr()); } finally { if (debug) dbg_leave("domainLabel"); }
public static void	parsePort(LexerCore lexer, HostPort hp) Port parsing method. All port symbols must be digital. Port length must be >0. Resulting port value stores in input HostPort instance. param lexer class to use for parsing param hp HostPort instance for accepting port value exception ParseException if an error occurs parsing exception NumberFormatException if any number format error exception IllegalArgumentException if any other format error try { String port = lexer.number(); if (port.length() == 0) { // nondigit port symbols throw new ParseException("Port format error", lexer.getPtr()); } else { hp.setPort(Integer.parseInt(port)); } } catch (NumberFormatException nfe) { throw new ParseException (lexer.getBuffer() + " :Error parsing port ", lexer.getPtr()); } catch (IllegalArgumentException iae) { // setPort can throw IAE throw new ParseException(iae.getMessage(), lexer.getPtr()); }