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/* -*-mode: flex-*- */
%top {
/* Include this before everything else, for various large-file definitions */
#include "config.h"
#include <wireshark.h>
}
/*
* We want a reentrant scanner.
*/
%option reentrant
/*
* We don't use input, so don't generate code for it.
*/
%option noinput
/*
* We don't use unput, so don't generate code for it.
*/
%option nounput
/*
* We don't read interactively from the terminal.
*/
%option never-interactive
/*
* We want to stop processing when we get to the end of the input.
*/
%option noyywrap
/*
* Prefix scanner routines with "text_import_" rather than "yy", so this scanner
* can coexist with other scanners.
*/
%option prefix="text_import_"
/*
* We have to override the memory allocators so that we don't get
* "unused argument" warnings from the yyscanner argument (which
* we don't use, as we have a global memory allocator).
*
* We provide, as macros, our own versions of the routines generated by Flex,
* which just call malloc()/realloc()/free() (as the Flex versions do),
* discarding the extra argument.
*/
%option noyyalloc
%option noyyrealloc
%option noyyfree
%{
/********************************************************************************
*
* text_import_scanner.l
* Scanner for text import
* November 2010, Jaap Keuter <jaap.keuter@xs4all.nl>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Based on text2pcap-scanner.l by Ashok Narayanan <ashokn@cisco.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "text_import_scanner.h"
/*
* Disable diagnostics in the code generated by Flex.
*/
DIAG_OFF_FLEX()
/*
* Flex (v 2.5.35) uses this symbol to "exclude" unistd.h
*/
#ifdef _WIN32
# define YY_NO_UNISTD_H
#endif
/*
* Sleazy hack to suppress compiler warnings in yy_fatal_error().
*/
#define YY_EXIT_FAILURE ((void)yyscanner, 2)
/*
* Macros for the allocators, to discard the extra argument.
*/
#define text_import_alloc(size, yyscanner) (void *)malloc(size)
#define text_import_realloc(ptr, size, yyscanner) (void *)realloc((char *)(ptr), (size))
#define text_import_free(ptr, yyscanner) free((char *)ptr)
%}
directive ^#TEXT2PCAP.*\r?\n
comment ^[\t ]*#.*\r?\n
byte [0-9A-Fa-f][0-9A-Fa-f][ \t]?
byte_eol [0-9A-Fa-f][0-9A-Fa-f]\r?\n
offset [0-9A-Fa-f]+[: \t]
offset_eol [0-9A-Fa-f]+\r?\n
text [^ \n\t]+
mailfwd >
eol \r?\n\r?
%%
{byte} { if (parse_token(T_BYTE, yytext) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
{byte_eol} { if (parse_token(T_BYTE, yytext) != IMPORT_SUCCESS) return IMPORT_FAILURE;
if (parse_token(T_EOL, NULL) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
{offset} { if (parse_token(T_OFFSET, yytext) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
{offset_eol} { if (parse_token(T_OFFSET, yytext) != IMPORT_SUCCESS) return IMPORT_FAILURE;
if (parse_token(T_EOL, NULL) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
{mailfwd}{offset} { if (parse_token(T_OFFSET, yytext+1) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
{eol} { if (parse_token(T_EOL, NULL) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
[ \t] ; /* ignore whitespace */
{directive} { if (parse_token(T_DIRECTIVE, yytext) != IMPORT_SUCCESS) return IMPORT_FAILURE;
if (parse_token(T_EOL, NULL) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
{comment} { if (parse_token(T_EOL, NULL) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
{text} { if (parse_token(T_TEXT, yytext) != IMPORT_SUCCESS) return IMPORT_FAILURE; }
<<EOF>> { if (parse_token(T_EOF, NULL) != IMPORT_SUCCESS) return IMPORT_FAILURE; yyterminate(); }
%%
/*
* Turn diagnostics back on, so we check the code that we've written.
*/
DIAG_ON_FLEX()
import_status_t
text_import_scan(FILE *input_file)
{
yyscan_t scanner;
int ret;
if (text_import_lex_init(&scanner) != 0)
return IMPORT_INIT_FAILED;
text_import_set_in(input_file, scanner);
ret = text_import_lex(scanner);
text_import_lex_destroy(scanner);
return ret;
}
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