From e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:34:10 +0200 Subject: Adding upstream version 4.2.2. Signed-off-by: Daniel Baumann --- ui/text_import_scanner.l | 153 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 ui/text_import_scanner.l (limited to 'ui/text_import_scanner.l') diff --git a/ui/text_import_scanner.l b/ui/text_import_scanner.l new file mode 100644 index 0000000..5dd466c --- /dev/null +++ b/ui/text_import_scanner.l @@ -0,0 +1,153 @@ +/* -*-mode: flex-*- */ + +%top { +/* Include this before everything else, for various large-file definitions */ +#include "config.h" +#include +} + +/* + * 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 + * + * Wireshark - Network traffic analyzer + * By Gerald Combs + * Copyright 1998 Gerald Combs + * + * Based on text2pcap-scanner.l by Ashok Narayanan + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + *******************************************************************************/ + +#include +#include + +#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; } + +<> { 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; +} -- cgit v1.2.3