115 строки
2.6 KiB
C
115 строки
2.6 KiB
C
%option nounput
|
|
|
|
%{ /* -*- C -*- */
|
|
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2006 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*/
|
|
|
|
#include "opal_config.h"
|
|
|
|
#include <stdio.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include "opal/util/show_help_lex.h"
|
|
|
|
BEGIN_C_DECLS
|
|
|
|
/*
|
|
* public functions
|
|
*/
|
|
extern int opal_show_help_finish_parsing(void);
|
|
|
|
/*
|
|
* local functions
|
|
*/
|
|
static int opal_show_help_yywrap(void);
|
|
|
|
END_C_DECLS
|
|
|
|
/*
|
|
* global variables
|
|
*/
|
|
int opal_show_help_yynewlines = 1;
|
|
bool opal_show_help_parse_done = false;
|
|
|
|
#define yyterminate() \
|
|
return opal_show_help_finish_parsing()
|
|
|
|
%}
|
|
|
|
WHITE [\f\t\v ]
|
|
CHAR [A-Za-z0-9_\-\.]
|
|
|
|
%x CHOMP
|
|
|
|
%%
|
|
|
|
#.*\n ; /* comment line */
|
|
|
|
^\[.+\]/[^\]\n]*\n { BEGIN(CHOMP); return OPAL_SHOW_HELP_PARSE_TOPIC; }
|
|
|
|
<CHOMP>.*\n { BEGIN(INITIAL); }
|
|
|
|
.*/\n { BEGIN(CHOMP); return OPAL_SHOW_HELP_PARSE_MESSAGE; }
|
|
|
|
%%
|
|
|
|
|
|
/*
|
|
* This cleans up at the end of the parse (since, in this case, we
|
|
* always parse the entire file) and prevents a memory leak.
|
|
*/
|
|
int opal_show_help_finish_parsing(void)
|
|
{
|
|
if (NULL != YY_CURRENT_BUFFER) {
|
|
yy_delete_buffer(YY_CURRENT_BUFFER);
|
|
#if defined(YY_CURRENT_BUFFER_LVALUE)
|
|
YY_CURRENT_BUFFER_LVALUE = NULL;
|
|
#else
|
|
YY_CURRENT_BUFFER = NULL;
|
|
#endif /* YY_CURRENT_BUFFER_LVALUE */
|
|
}
|
|
return YY_NULL;
|
|
}
|
|
|
|
|
|
static int opal_show_help_yywrap(void)
|
|
{
|
|
opal_show_help_parse_done = true;
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* Ensure that we have a valid yybuffer to use. Specifically, if this
|
|
* scanner is invoked a second time, finish_parsing() (above) will
|
|
* have been executed, and the current buffer will have been freed.
|
|
* Flex doesn't recognize this fact because as far as it's concerned,
|
|
* its internal state was already initialized, so it thinks it should
|
|
* have a valid buffer. Hence, here we ensure to give it a valid
|
|
* buffer.
|
|
*/
|
|
int opal_show_help_init_buffer(FILE *file)
|
|
{
|
|
YY_BUFFER_STATE buf = yy_create_buffer(file, YY_BUF_SIZE);
|
|
yy_switch_to_buffer(buf);
|
|
|
|
return 0;
|
|
}
|