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+%{
+/* Copyright 1993-95 by Carl Harris, Jr.
+ * All rights reserved
+ *
+ * Distribute freely, except: don't remove my name from the source or
+ * documentation (don't take credit for my work), mark your changes (don't
+ * get me blamed for your possible bugs), don't alter or remove this
+ * notice.  May be sold if buildable source is provided to buyer.  No
+ * warrantee of any kind, express or implied, is included with this
+ * software; use at your own risk, responsibility for damages (if any) to
+ * anyone resulting from the use of this software rests entirely with the
+ * user.
+ *
+ * Send bug reports, bug fixes, enhancements, requests, flames, etc., and
+ * I'll try to keep a version up to date.  I can be reached as follows:
+ * Carl Harris <ceharris@mal.com>
+ */
+
+
+/***********************************************************************
+  module:       poprc_y.y
+  project:      popclient
+  programmer:   Carl Harris, ceharris@mal.com
+  description:  .poprc parser
+
+  $Log: rcfile_y.y,v $
+  Revision 1.1  1996/06/24 18:17:24  esr
+  Initial revision
+
+  Revision 1.4  1995/08/10 00:32:45  ceharris
+  Preparation for 3.0b3 beta release:
+  -	added code for --kill/--keep, --limit, --protocol, --flush
+  	options; --pop2 and --pop3 options now obsoleted by --protocol.
+  - 	added support for APOP authentication, including --with-APOP
+  	argument for configure.
+  -	provisional and broken support for RPOP
+  -	added buffering to SockGets and SockRead functions.
+  -	fixed problem of command-line options not being correctly
+  	carried into the merged options record.
+
+  Revision 1.3  1995/08/09 01:33:02  ceharris
+  Version 3.0 beta 2 release.
+  Added
+  -	.poprc functionality
+  -	GNU long options
+  -	multiple servers on the command line.
+  Fixed
+  -	Passwords showing up in ps output.
+
+  Revision 1.2  1995/08/08 01:01:36  ceharris
+  Added GNU-style long options processing.
+  Fixed password in 'ps' output problem.
+  Fixed various RCS tag blunders.
+  Integrated .poprc parser, lexer, etc into Makefile processing.
+
+ ***********************************************************************/
+
+#include <config.h>
+#include <stdio.h>
+extern char *prc_pathname;
+extern int prc_lineno;
+extern int prc_errflag;
+extern char yytext[];
+%}
+
+%union {
+  int proto;
+  char *sval;
+}
+
+%token KW_SERVER KW_PROTOCOL KW_USERNAME KW_PASSWORD
+%token KW_REMOTEFOLDER KW_LOCALFOLDER KW_EOL
+%token <proto> PROTO_POP2 PROTO_POP3 PROTO_IMAP PROTO_APOP PROTO_RPOP
+%token <sval> PARAM_STRING
+%type <proto> proto;
+
+%%
+
+rcfile:		rcline
+	|	rcfile rcline
+  ;
+
+rcline:		statement KW_EOL
+  ;
+
+statement:
+	|	define_server			{prc_register(); prc_reset();}
+  ;
+
+define_server:	KW_SERVER PARAM_STRING server_options 	{prc_setserver($2);}	
+	|	KW_SERVER PARAM_STRING			{prc_setserver($2);}
+  ;
+
+server_options:	serv_option_clause
+	|	server_options serv_option_clause
+  ;
+
+serv_option_clause: 
+		KW_PROTOCOL proto		{prc_setproto($2);}
+	|	KW_USERNAME PARAM_STRING	{prc_setusername($2);}
+	|	KW_PASSWORD PARAM_STRING	{prc_setpassword($2);}
+	|	KW_REMOTEFOLDER PARAM_STRING	{prc_setremote($2);}
+	|	KW_LOCALFOLDER PARAM_STRING	{prc_setlocal($2);}
+  ;
+
+proto:		PROTO_POP2
+	|	PROTO_POP3
+	|	PROTO_IMAP
+	|	PROTO_APOP
+	|	PROTO_RPOP
+  ;
+
+%%
+
+
+yyerror (s)
+char *s;
+{
+  fprintf(stderr,"%s line %d: %s at %s\n", prc_pathname, prc_lineno, s, yytext);
+  prc_errflag++;
+}