/* -*-mode: flex-*- */
+%top {
+/* Include this before everything else, for various large-file definitions */
+#include "config.h"
+}
+
/*
* We don't use input, so don't generate code for it.
*/
*/
%option never-interactive
+/*
+ * We want to stop processing when we get to the end of the input.
+ */
+%option noyywrap
+
+/*
+ * Prefix scanner routines with "text2pcap_" rather than "yy" to avoid a
+ * "redefined macro" warning with flex 2.6.3.
+ */
+%option prefix="text2pcap_"
+
%{
/********************************************************************************
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * SPDX-License-Identifier: GPL-2.0-or-later
*
*******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
-#ifdef _WIN32
-#include <io.h> /* for isatty() */
-#endif
-
#include "text2pcap.h"
+/*
+ * Disable diagnostics in the code generated by Flex.
+ */
+DIAG_OFF_FLEX
+
/*
* Flex (v 2.5.35) uses this symbol to "exclude" unistd.h
*/
#define YY_NO_UNISTD_H
#endif
-#ifdef _WIN32
-/* disable Windows VC compiler warning "signed/unsigned mismatch" associated */
-/* with YY_INPUT code generated by flex versions such as 2.5.35. */
-#pragma warning (disable:4018)
-#endif
-
%}
-hexdigit [0-9A-Fa-f]
-directive #TEXT2PCAP.*
-comment #[^W].*
-byte [0-9A-Fa-f][0-9A-Fa-f][ \t]
+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
%%
-{byte} { parse_token(T_BYTE, yytext); }
-{byte_eol} { parse_token(T_BYTE, yytext); parse_token(T_EOL, NULL); }
-{offset} { parse_token(T_OFFSET, yytext); }
-{offset_eol} { parse_token(T_OFFSET, yytext); parse_token(T_EOL, NULL); }
-{mailfwd}{offset} { parse_token(T_OFFSET, yytext+1); }
-{eol} { parse_token(T_EOL, NULL); }
+{byte} { if (parse_token(T_BYTE, yytext) != EXIT_SUCCESS) return EXIT_FAILURE; }
+{byte_eol} { if (parse_token(T_BYTE, yytext) != EXIT_SUCCESS) return EXIT_FAILURE;
+ if (parse_token(T_EOL, NULL) != EXIT_SUCCESS) return EXIT_FAILURE; }
+{offset} { if (parse_token(T_OFFSET, yytext) != EXIT_SUCCESS) return EXIT_FAILURE; }
+{offset_eol} { if (parse_token(T_OFFSET, yytext) != EXIT_SUCCESS) return EXIT_FAILURE;
+ if (parse_token(T_EOL, NULL) != EXIT_SUCCESS) return EXIT_FAILURE; }
+{mailfwd}{offset} { if (parse_token(T_OFFSET, yytext+1) != EXIT_SUCCESS) return EXIT_FAILURE; }
+{eol} { if (parse_token(T_EOL, NULL) != EXIT_SUCCESS) return EXIT_FAILURE; }
[ \t] ; /* ignore whitespace */
-{directive} { parse_token(T_DIRECTIVE, yytext); }
-{comment} ; /* ignore comments */
-{text} { parse_token(T_TEXT, yytext); }
+{directive} { if (parse_token(T_DIRECTIVE, yytext) != EXIT_SUCCESS) return EXIT_FAILURE;
+ if (parse_token(T_EOL, NULL) != EXIT_SUCCESS) return EXIT_FAILURE; }
+{comment} { if (parse_token(T_EOL, NULL) != EXIT_SUCCESS) return EXIT_FAILURE; }
+{text} { if (parse_token(T_TEXT, yytext) != EXIT_SUCCESS) return EXIT_FAILURE; }
%%
-int yywrap(void)
+/*
+ * Turn diagnostics back on, so we check the code that we've written.
+ */
+DIAG_ON_FLEX
+
+int
+text2pcap_scan(void)
{
- return 1;
+ int ret;
+
+ ret = text2pcap_lex();
+ text2pcap_lex_destroy();
+ return ret;
}