wmem: allow wmem_destroy_list to ignore a NULL list.

[metze/wireshark/wip.git] / text2pcap-scanner.l

diff --git a/text2pcap-scanner.l b/text2pcap-scanner.l
index da36898ad14cb7c37e0506e4a5c0f58f26f1e8ad..3a69a83ba1d34f06773810c3df40826d076b1c81 100644 (file)
--- a/text2pcap-scanner.l
+++ b/text2pcap-scanner.l
@@ -1,7 +1,38 @@
 /* -*-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 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 "text2pcap_" rather than "yy" to avoid a
+ * "redefined macro" warning with flex 2.6.3.
+ */
+%option prefix="text2pcap_"
+
 %{
-    
+
 /********************************************************************************
  *
  * text2pcap-scanner.l
@@ -10,64 +41,72 @@
  *
  * (c) Copyright 2001 Ashok Narayanan <ashokn@cisco.com>
  *
- * $Id$
- * 
- * Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@ethereal.com>
+ * Wireshark - Network traffic analyzer
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
  *
  *******************************************************************************/
-    
+
 #include <stdio.h>
 #include <stdlib.h>
 
 #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
+ */
+#ifdef _WIN32
+#define YY_NO_UNISTD_H
+#endif
+
 %}
 
-hexdigit [0-9A-Fa-f]
-directive #TEXT2PCAP.*
-comment #[^W].*
-byte [0-9A-Fa-f][0-9A-Fa-f][ \t]
-byte_eol [0-9A-Fa-f][0-9A-Fa-f]\n
+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]+\n
+offset_eol [0-9A-Fa-f]+\r?\n
 text [^ \n\t]+
 mailfwd >
 eol \r?\n\r?
 
 %%
 
-{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()
+/*
+ * 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;
 }