📄 faq.jj
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/* * Copyright © 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * California 95054, U.S.A. All rights reserved. Sun Microsystems, Inc. has * intellectual property rights relating to technology embodied in the product * that is described in this document. In particular, and without limitation, * these intellectual property rights may include one or more of the U.S. * patents listed at http://www.sun.com/patents and one or more additional * patents or pending patent applications in the U.S. and in other countries. * U.S. Government Rights - Commercial software. Government users are subject * to the Sun Microsystems, Inc. standard license agreement and applicable * provisions of the FAR and its supplements. Use is subject to license terms. * Sun, Sun Microsystems, the Sun logo and Java are trademarks or registered * trademarks of Sun Microsystems, Inc. in the U.S. and other countries. This * product is covered and controlled by U.S. Export Control laws and may be * subject to the export or import laws in other countries. Nuclear, missile, * chemical biological weapons or nuclear maritime end uses or end users, * whether direct or indirect, are strictly prohibited. Export or reexport * to countries subject to U.S. embargo or to entities identified on U.S. * export exclusion lists, including, but not limited to, the denied persons * and specially designated nationals lists is strictly prohibited. */PARSER_BEGIN(Faq)import java.io.*;public class Faq { static int count = 0; static int beginAt = 1; static PrintWriter indstr; static { try { indstr = new PrintWriter(new FileWriter("index.html")); indstr.println("<title>Selected list of emails from the JavaCC mailing list</title>"); indstr.println("<h2>Selected list of emails from the JavaCC mailing list</h2>"); } catch (IOException e) { throw new Error(); } } static String fix(String s) { String retval = ""; for (int i = 0; i < s.length(); i++) { char c = s.charAt(i); if (c == '<') { retval += "<"; } else if (c == '>') { retval += ">"; } else { retval += c; } } return retval; } public static void main(String args[]) throws ParseException { if (args.length == 1) { beginAt = Integer.parseInt(args[0]); } Faq parser = new Faq(System.in); parser.MailFile(); }}PARSER_END(Faq)// PARSER SPECIFICATIONS BEGIN HEREvoid MailFile() : { }{ ( { count++; } MailMessage() { System.out.print(count + "."); System.out.flush(); } )* <EOF> { System.out.println(""); indstr.close(); }}void MailMessage() : { PrintWriter msgstr = null; Token subj=null, from=null, date=null, body; if (count >= beginAt) { try { msgstr = new PrintWriter(new FileWriter(count + ".html")); } catch (IOException e) { throw new Error(); } } }{ ( subj=<SUBJECT> | from=<FROM> | date=<DATE> )+ { indstr.print("<a href=\"" + count + ".html\">"); if (subj == null) { indstr.println("no subject</a><br>"); } else { indstr.println(fix(subj.image) + "</a><br>"); } if (count >= beginAt) { msgstr.println("<title>" + ((subj==null) ? "no subject" : fix(subj.image)) + "</title>"); msgstr.println("Subject: " + ((subj==null) ? "no subject" : fix(subj.image)) + "<br>"); msgstr.println("From: " + ((from==null) ? "" : fix(from.image)) + "<br>"); msgstr.println("Date: " + ((date==null) ? "" : fix(date.image)) + "<br>"); msgstr.println("<br>"); } } ( body=<BODY> { if (count >= beginAt) { msgstr.print(fix(body.image) + "<br>"); } } )* <END> { if (count >= beginAt) { msgstr.close(); } }}// LEXICAL SPECIFICATIONS BEGIN HERETOKEN:{ <#EOL: "\n" | "\r" | "\r\n">| <#TWOEOLS: (("\n"|"\r\n") <EOL>) | ("\r\r" [ "\n" ])>| <#NOT_EOL: ~["\n","\r"]>}<DEFAULT>SKIP:{ <<EOL> "*** EOOH ***" <EOL>> : MAILHEADER| <~[]>}<MAILHEADER>SKIP:{ <_TWOEOLS: <TWOEOLS>> : MAILBODY // We cannot have just a reference to a regular expression in a // lexical specification - i.e., we cannot simply have <TWOEOLS>.| "Subject: " : MAILSUBJECT| "From: " : MAILFROM| "Date: " : MAILDATE| <~[]>}<MAILSUBJECT>TOKEN:{ <SUBJECT: ( <NOT_EOL> )+>}<MAILSUBJECT>SKIP:{ <_EOL1: <EOL>> : MAILHEADER}<MAILFROM>TOKEN:{ <FROM: ( <NOT_EOL> )+>}<MAILFROM>SKIP:{ <_EOL2: <EOL>> : MAILHEADER}<MAILDATE>TOKEN:{ <DATE: ( <NOT_EOL> )+>}<MAILDATE>SKIP:{ <_EOL3: <EOL>> : MAILHEADER}<MAILBODY>TOKEN:{ <BODY: (~["\n","\r","\u001f"])* <EOL>>| <END: "\u001f"> : DEFAULT}⌨️ 快捷键说明
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