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/* $OpenBSD: scan.l,v 1.12 2015/11/19 23:34:56 mmcc Exp $ */ |
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/* scan.l - scanner for flex input -*-C-*- */ |
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%{ |
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/* Copyright (c) 1990 The Regents of the University of California. */ |
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/* All rights reserved. */ |
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/* This code is derived from software contributed to Berkeley by */ |
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/* Vern Paxson. */ |
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/* The United States Government has rights in this work pursuant */ |
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/* to contract no. DE-AC03-76SF00098 between the United States */ |
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/* Department of Energy and the University of California. */ |
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/* This file is part of flex. */ |
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/* Redistribution and use in source and binary forms, with or without */ |
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/* modification, are permitted provided that the following conditions */ |
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/* are met: */ |
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/* 1. Redistributions of source code must retain the above copyright */ |
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/* notice, this list of conditions and the following disclaimer. */ |
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/* 2. Redistributions in binary form must reproduce the above copyright */ |
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/* notice, this list of conditions and the following disclaimer in the */ |
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/* documentation and/or other materials provided with the distribution. */ |
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/* Neither the name of the University nor the names of its contributors */ |
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/* may be used to endorse or promote products derived from this software */ |
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/* without specific prior written permission. */ |
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/* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR */ |
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/* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */ |
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/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */ |
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/* PURPOSE. */ |
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#include "flexdef.h" |
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#include "parse.h" |
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extern bool tablesverify, tablesext; |
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extern int trlcontxt; /* Set in parse.y for each rule. */ |
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extern const char *escaped_qstart, *escaped_qend; |
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#define ACTION_ECHO add_action( yytext ) |
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#define ACTION_IFDEF(def, should_define) \ |
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{ \ |
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if ( should_define ) \ |
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action_define( def, 1 ); \ |
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} |
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#define ACTION_ECHO_QSTART add_action (escaped_qstart) |
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#define ACTION_ECHO_QEND add_action (escaped_qend) |
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#define ACTION_M4_IFDEF(def, should_define) \ |
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do{ \ |
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if ( should_define ) \ |
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buf_m4_define( &m4defs_buf, def, NULL);\ |
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else \ |
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buf_m4_undefine( &m4defs_buf, def);\ |
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} while(0) |
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#define MARK_END_OF_PROLOG mark_prolog(); |
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#define YY_DECL \ |
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int flexscan() |
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#define RETURNCHAR \ |
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yylval = (unsigned char) yytext[0]; \ |
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return CHAR; |
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#define RETURNNAME \ |
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if(yyleng < MAXLINE) \ |
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{ \ |
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strlcpy( nmstr, yytext, sizeof nmstr ); \ |
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} \ |
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else \ |
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{ \ |
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synerr(_("Input line too long\n")); \ |
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FLEX_EXIT(EXIT_FAILURE); \ |
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} \ |
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return NAME; |
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#define PUT_BACK_STRING(str, start) \ |
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for ( i = strlen( str ) - 1; i >= start; --i ) \ |
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unput((str)[i]) |
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#define CHECK_REJECT(str) \ |
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if ( all_upper( str ) ) \ |
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reject = true; |
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#define CHECK_YYMORE(str) \ |
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if ( all_lower( str ) ) \ |
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yymore_used = true; |
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#define YY_USER_INIT \ |
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if ( getenv("POSIXLY_CORRECT") ) \ |
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posix_compat = true; |
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%} |
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%option caseless nodefault stack noyy_top_state |
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%option nostdinit |
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%x SECT2 SECT2PROLOG SECT3 CODEBLOCK PICKUPDEF SC CARETISBOL NUM QUOTE |
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%x FIRSTCCL CCL ACTION RECOVER COMMENT ACTION_STRING PERCENT_BRACE_ACTION |
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%x OPTION LINEDIR CODEBLOCK_MATCH_BRACE |
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%x GROUP_WITH_PARAMS |
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%x GROUP_MINUS_PARAMS |
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%x EXTENDED_COMMENT |
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%x COMMENT_DISCARD |
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WS [[:blank:]]+ |
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OPTWS [[:blank:]]* |
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NOT_WS [^[:blank:]\r\n] |
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NL \r?\n |
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NAME ([[:alpha:]_][[:alnum:]_-]*) |
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NOT_NAME [^[:alpha:]_*\n]+ |
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SCNAME {NAME} |
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ESCSEQ (\\([^\n]|[0-7]{1,3}|x[[:xdigit:]]{1,2})) |
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FIRST_CCL_CHAR ([^\\\n]|{ESCSEQ}) |
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CCL_CHAR ([^\\\n\]]|{ESCSEQ}) |
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CCL_EXPR ("[:"^?[[:alpha:]]+":]") |
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LEXOPT [aceknopr] |
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M4QSTART "[[" |
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M4QEND "]]" |
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%% |
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static int bracelevel, didadef, indented_code; |
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static int doing_rule_action = false; |
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static int option_sense; |
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int doing_codeblock = false; |
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int i, brace_depth=0, brace_start_line=0; |
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u_char nmdef[MAXLINE]; |
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<INITIAL>{ |
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^{WS} indented_code = true; BEGIN(CODEBLOCK); |
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^"/*" ACTION_ECHO; yy_push_state( COMMENT ); |
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^#{OPTWS}line{WS} yy_push_state( LINEDIR ); |
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^"%s"{NAME}? return SCDECL; |
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^"%x"{NAME}? return XSCDECL; |
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^"%{".*{NL} { |
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++linenum; |
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line_directive_out( (FILE *) 0, 1 ); |
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indented_code = false; |
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BEGIN(CODEBLOCK); |
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} |
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^"%top"[[:blank:]]*"{"[[:blank:]]*{NL} { |
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brace_start_line = linenum; |
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++linenum; |
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buf_linedir( &top_buf, infilename?infilename:"<stdin>", linenum); |
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brace_depth = 1; |
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yy_push_state(CODEBLOCK_MATCH_BRACE); |
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} |
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^"%top".* synerr( _("malformed '%top' directive") ); |
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{WS} /* discard */ |
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^"%%".* { |
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sectnum = 2; |
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bracelevel = 0; |
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mark_defs1(); |
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line_directive_out( (FILE *) 0, 1 ); |
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BEGIN(SECT2PROLOG); |
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return SECTEND; |
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} |
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^"%pointer".*{NL} yytext_is_array = false; ++linenum; |
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^"%array".*{NL} yytext_is_array = true; ++linenum; |
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^"%option" BEGIN(OPTION); return OPTION_OP; |
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^"%"{LEXOPT}{OPTWS}[[:digit:]]*{OPTWS}{NL} ++linenum; /* ignore */ |
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^"%"{LEXOPT}{WS}.*{NL} ++linenum; /* ignore */ |
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/* xgettext: no-c-format */ |
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^"%"[^sxaceknopr{}].* synerr( _( "unrecognized '%' directive" ) ); |
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^{NAME} { |
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if(yyleng < MAXLINE) |
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{ |
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strlcpy( nmstr, yytext, sizeof nmstr ); |
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} |
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else |
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{ |
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synerr( _("Definition name too long\n")); |
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FLEX_EXIT(EXIT_FAILURE); |
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} |
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didadef = false; |
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BEGIN(PICKUPDEF); |
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} |
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{SCNAME} RETURNNAME; |
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^{OPTWS}{NL} ++linenum; /* allows blank lines in section 1 */ |
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{OPTWS}{NL} ACTION_ECHO; ++linenum; /* maybe end of comment line */ |
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} |
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<COMMENT>{ |
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"*/" ACTION_ECHO; yy_pop_state(); |
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"*" ACTION_ECHO; |
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{M4QSTART} ACTION_ECHO_QSTART; |
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{M4QEND} ACTION_ECHO_QEND; |
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[^*\n] ACTION_ECHO; |
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{NL} ++linenum; ACTION_ECHO; |
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} |
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<COMMENT_DISCARD>{ |
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/* This is the same as COMMENT, but is discarded rather than output. */ |
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"*/" yy_pop_state(); |
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"*" ; |
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[^*\n] ; |
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{NL} ++linenum; |
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} |
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<EXTENDED_COMMENT>{ |
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")" yy_pop_state(); |
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[^\n\)]+ ; |
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{NL} ++linenum; |
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} |
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<LINEDIR>{ |
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\n yy_pop_state(); |
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[[:digit:]]+ linenum = myctoi( yytext ); |
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\"[^"\n]*\" { |
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free( (void *) infilename ); |
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infilename = copy_string( yytext + 1 ); |
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infilename[strlen( infilename ) - 1] = '\0'; |
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} |
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. /* ignore spurious characters */ |
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} |
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<CODEBLOCK>{ |
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^"%}".*{NL} ++linenum; BEGIN(INITIAL); |
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{M4QSTART} ACTION_ECHO_QSTART; |
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{M4QEND} ACTION_ECHO_QEND; |
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. ACTION_ECHO; |
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{NL} { |
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++linenum; |
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ACTION_ECHO; |
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if ( indented_code ) |
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BEGIN(INITIAL); |
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} |
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} |
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<CODEBLOCK_MATCH_BRACE>{ |
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"}" { |
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if( --brace_depth == 0){ |
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/* TODO: Matched. */ |
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yy_pop_state(); |
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}else |
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buf_strnappend(&top_buf, yytext, yyleng); |
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} |
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"{" { |
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brace_depth++; |
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buf_strnappend(&top_buf, yytext, yyleng); |
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} |
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{NL} { |
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++linenum; |
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buf_strnappend(&top_buf, yytext, yyleng); |
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} |
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{M4QSTART} buf_strnappend(&top_buf, escaped_qstart, strlen(escaped_qstart)); |
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{M4QEND} buf_strnappend(&top_buf, escaped_qend, strlen(escaped_qend)); |
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[^{}\r\n] { |
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buf_strnappend(&top_buf, yytext, yyleng); |
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} |
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<<EOF>> { |
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linenum = brace_start_line; |
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synerr(_("Unmatched '{'")); |
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yyterminate(); |
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} |
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} |
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<PICKUPDEF>{ |
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{WS} /* separates name and definition */ |
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{NOT_WS}[^\r\n]* { |
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if(yyleng < MAXLINE) |
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{ |
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strlcpy( (char *) nmdef, yytext, sizeof nmdef ); |
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} |
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else |
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{ |
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format_synerr( _("Definition value for {%s} too long\n"), nmstr); |
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FLEX_EXIT(EXIT_FAILURE); |
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} |
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/* Skip trailing whitespace. */ |
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for ( i = strlen( (char *) nmdef ) - 1; |
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i >= 0 && (nmdef[i] == ' ' || nmdef[i] == '\t'); |
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--i ) |
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; |
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nmdef[i + 1] = '\0'; |
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ndinstal( nmstr, nmdef ); |
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didadef = true; |
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} |
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{NL} { |
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if ( ! didadef ) |
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synerr( _( "incomplete name definition" ) ); |
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BEGIN(INITIAL); |
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++linenum; |
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} |
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} |
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<OPTION>{ |
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{NL} ++linenum; BEGIN(INITIAL); |
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{WS} option_sense = true; |
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"=" return '='; |
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no option_sense = ! option_sense; |
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7bit csize = option_sense ? 128 : 256; |
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8bit csize = option_sense ? 256 : 128; |
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align long_align = option_sense; |
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always-interactive { |
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ACTION_M4_IFDEF( "M4""_YY_ALWAYS_INTERACTIVE", option_sense ); |
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interactive = option_sense; |
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} |
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array yytext_is_array = option_sense; |
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ansi-definitions ansi_func_defs = option_sense; |
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ansi-prototypes ansi_func_protos = option_sense; |
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backup backing_up_report = option_sense; |
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batch interactive = ! option_sense; |
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bison-bridge bison_bridge_lval = option_sense; |
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bison-locations { if((bison_bridge_lloc = option_sense)) |
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bison_bridge_lval = true; |
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} |
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"c++" C_plus_plus = option_sense; |
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caseful|case-sensitive sf_set_case_ins(!option_sense); |
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caseless|case-insensitive sf_set_case_ins(option_sense); |
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debug ddebug = option_sense; |
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default spprdflt = ! option_sense; |
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ecs useecs = option_sense; |
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fast { |
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useecs = usemecs = false; |
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use_read = fullspd = true; |
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} |
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full { |
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useecs = usemecs = false; |
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use_read = fulltbl = true; |
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} |
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input ACTION_IFDEF("YY_NO_INPUT", ! option_sense); |
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interactive interactive = option_sense; |
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lex-compat lex_compat = option_sense; |
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posix-compat posix_compat = option_sense; |
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main { |
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ACTION_M4_IFDEF( "M4""_YY_MAIN", option_sense); |
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/* Override yywrap */ |
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if( option_sense == true ) |
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do_yywrap = false; |
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} |
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meta-ecs usemecs = option_sense; |
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never-interactive { |
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ACTION_M4_IFDEF( "M4""_YY_NEVER_INTERACTIVE", option_sense ); |
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interactive = !option_sense; |
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} |
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perf-report performance_report += option_sense ? 1 : -1; |
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pointer yytext_is_array = ! option_sense; |
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read use_read = option_sense; |
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reentrant reentrant = option_sense; |
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reject reject_really_used = option_sense; |
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stack ACTION_M4_IFDEF( "M4""_YY_STACK_USED", option_sense ); |
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stdinit do_stdinit = option_sense; |
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stdout use_stdout = option_sense; |
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unistd ACTION_IFDEF("YY_NO_UNISTD_H", ! option_sense); |
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unput ACTION_M4_IFDEF("M4""_YY_NO_UNPUT", ! option_sense); |
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verbose printstats = option_sense; |
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warn nowarn = ! option_sense; |
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|
|
yylineno do_yylineno = option_sense; ACTION_M4_IFDEF("M4""_YY_USE_LINENO", option_sense); |
393 |
|
|
yymore yymore_really_used = option_sense; |
394 |
|
|
yywrap do_yywrap = option_sense; |
395 |
|
|
|
396 |
|
|
yy_push_state ACTION_M4_IFDEF("M4""_YY_NO_PUSH_STATE", ! option_sense); |
397 |
|
|
yy_pop_state ACTION_M4_IFDEF("M4""_YY_NO_POP_STATE", ! option_sense); |
398 |
|
|
yy_top_state ACTION_M4_IFDEF("M4""_YY_NO_TOP_STATE", ! option_sense); |
399 |
|
|
|
400 |
|
|
yy_scan_buffer ACTION_M4_IFDEF("M4""_YY_NO_SCAN_BUFFER", ! option_sense); |
401 |
|
|
yy_scan_bytes ACTION_M4_IFDEF("M4""_YY_NO_SCAN_BYTES", ! option_sense); |
402 |
|
|
yy_scan_string ACTION_M4_IFDEF("M4""_YY_NO_SCAN_STRING", ! option_sense); |
403 |
|
|
|
404 |
|
|
yyalloc ACTION_M4_IFDEF("M4""_YY_NO_FLEX_ALLOC", ! option_sense); |
405 |
|
|
yyrealloc ACTION_M4_IFDEF("M4""_YY_NO_FLEX_REALLOC", ! option_sense); |
406 |
|
|
yyfree ACTION_M4_IFDEF("M4""_YY_NO_FLEX_FREE", ! option_sense); |
407 |
|
|
|
408 |
|
|
yyget_debug ACTION_M4_IFDEF("M4""_YY_NO_GET_DEBUG", ! option_sense); |
409 |
|
|
yyset_debug ACTION_M4_IFDEF("M4""_YY_NO_SET_DEBUG", ! option_sense); |
410 |
|
|
yyget_extra ACTION_M4_IFDEF("M4""_YY_NO_GET_EXTRA", ! option_sense); |
411 |
|
|
yyset_extra ACTION_M4_IFDEF("M4""_YY_NO_SET_EXTRA", ! option_sense); |
412 |
|
|
yyget_leng ACTION_M4_IFDEF("M4""_YY_NO_GET_LENG", ! option_sense); |
413 |
|
|
yyget_text ACTION_M4_IFDEF("M4""_YY_NO_GET_TEXT", ! option_sense); |
414 |
|
|
yyget_lineno ACTION_M4_IFDEF("M4""_YY_NO_GET_LINENO", ! option_sense); |
415 |
|
|
yyset_lineno ACTION_M4_IFDEF("M4""_YY_NO_SET_LINENO", ! option_sense); |
416 |
|
|
yyget_in ACTION_M4_IFDEF("M4""_YY_NO_GET_IN", ! option_sense); |
417 |
|
|
yyset_in ACTION_M4_IFDEF("M4""_YY_NO_SET_IN", ! option_sense); |
418 |
|
|
yyget_out ACTION_M4_IFDEF("M4""_YY_NO_GET_OUT", ! option_sense); |
419 |
|
|
yyset_out ACTION_M4_IFDEF("M4""_YY_NO_SET_OUT", ! option_sense); |
420 |
|
|
yyget_lval ACTION_M4_IFDEF("M4""_YY_NO_GET_LVAL", ! option_sense); |
421 |
|
|
yyset_lval ACTION_M4_IFDEF("M4""_YY_NO_SET_LVAL", ! option_sense); |
422 |
|
|
yyget_lloc ACTION_M4_IFDEF("M4""_YY_NO_GET_LLOC", ! option_sense); |
423 |
|
|
yyset_lloc ACTION_M4_IFDEF("M4""_YY_NO_SET_LLOC", ! option_sense); |
424 |
|
|
|
425 |
|
|
extra-type return OPT_EXTRA_TYPE; |
426 |
|
|
outfile return OPT_OUTFILE; |
427 |
|
|
prefix return OPT_PREFIX; |
428 |
|
|
yyclass return OPT_YYCLASS; |
429 |
|
|
header(-file)? return OPT_HEADER; |
430 |
|
|
tables-file return OPT_TABLES; |
431 |
|
|
tables-verify { |
432 |
|
|
tablesverify = option_sense; |
433 |
|
|
if(!tablesext && option_sense) |
434 |
|
|
tablesext = true; |
435 |
|
|
} |
436 |
|
|
|
437 |
|
|
|
438 |
|
|
\"[^"\n]*\" { |
439 |
|
|
if(yyleng-1 < MAXLINE) |
440 |
|
|
{ |
441 |
|
|
strlcpy( nmstr, yytext + 1, sizeof nmstr ); |
442 |
|
|
} |
443 |
|
|
else |
444 |
|
|
{ |
445 |
|
|
synerr( _("Option line too long\n")); |
446 |
|
|
FLEX_EXIT(EXIT_FAILURE); |
447 |
|
|
} |
448 |
|
|
if (nmstr[strlen( nmstr ) - 1] == '"') |
449 |
|
|
nmstr[strlen( nmstr ) - 1] = '\0'; |
450 |
|
|
return NAME; |
451 |
|
|
} |
452 |
|
|
|
453 |
|
|
(([a-mo-z]|n[a-np-z])[[:alpha:]\-+]*)|. { |
454 |
|
|
format_synerr( _( "unrecognized %%option: %s" ), |
455 |
|
|
yytext ); |
456 |
|
|
BEGIN(RECOVER); |
457 |
|
|
} |
458 |
|
|
} |
459 |
|
|
|
460 |
|
|
<RECOVER>.*{NL} ++linenum; BEGIN(INITIAL); |
461 |
|
|
|
462 |
|
|
|
463 |
|
|
<SECT2PROLOG>{ |
464 |
|
|
^"%{".* ++bracelevel; yyless( 2 ); /* eat only %{ */ |
465 |
|
|
^"%}".* --bracelevel; yyless( 2 ); /* eat only %} */ |
466 |
|
|
|
467 |
|
|
^{WS}.* ACTION_ECHO; /* indented code in prolog */ |
468 |
|
|
|
469 |
|
|
^{NOT_WS}.* { /* non-indented code */ |
470 |
|
|
if ( bracelevel <= 0 ) |
471 |
|
|
{ /* not in %{ ... %} */ |
472 |
|
|
yyless( 0 ); /* put it all back */ |
473 |
|
|
yy_set_bol( 1 ); |
474 |
|
|
mark_prolog(); |
475 |
|
|
BEGIN(SECT2); |
476 |
|
|
} |
477 |
|
|
else |
478 |
|
|
ACTION_ECHO; |
479 |
|
|
} |
480 |
|
|
|
481 |
|
|
. ACTION_ECHO; |
482 |
|
|
{NL} ++linenum; ACTION_ECHO; |
483 |
|
|
|
484 |
|
|
<<EOF>> { |
485 |
|
|
mark_prolog(); |
486 |
|
|
sectnum = 0; |
487 |
|
|
yyterminate(); /* to stop the parser */ |
488 |
|
|
} |
489 |
|
|
} |
490 |
|
|
|
491 |
|
|
<SECT2>{ |
492 |
|
|
^{OPTWS}{NL} ++linenum; /* allow blank lines in section 2 */ |
493 |
|
|
|
494 |
|
|
^{OPTWS}"%{" { |
495 |
|
|
indented_code = false; |
496 |
|
|
doing_codeblock = true; |
497 |
|
|
bracelevel = 1; |
498 |
|
|
BEGIN(PERCENT_BRACE_ACTION); |
499 |
|
|
} |
500 |
|
|
|
501 |
|
|
^{OPTWS}"<" { |
502 |
|
|
/* Allow "<" to appear in (?x) patterns. */ |
503 |
|
|
if (!sf_skip_ws()) |
504 |
|
|
BEGIN(SC); |
505 |
|
|
return '<'; |
506 |
|
|
} |
507 |
|
|
^{OPTWS}"^" return '^'; |
508 |
|
|
\" BEGIN(QUOTE); return '"'; |
509 |
|
|
"{"/[[:digit:]] { |
510 |
|
|
BEGIN(NUM); |
511 |
|
|
if ( lex_compat || posix_compat ) |
512 |
|
|
return BEGIN_REPEAT_POSIX; |
513 |
|
|
else |
514 |
|
|
return BEGIN_REPEAT_FLEX; |
515 |
|
|
} |
516 |
|
|
"$"/([[:blank:]]|{NL}) return '$'; |
517 |
|
|
|
518 |
|
|
{WS}"%{" { |
519 |
|
|
bracelevel = 1; |
520 |
|
|
BEGIN(PERCENT_BRACE_ACTION); |
521 |
|
|
|
522 |
|
|
if ( in_rule ) |
523 |
|
|
{ |
524 |
|
|
doing_rule_action = true; |
525 |
|
|
in_rule = false; |
526 |
|
|
return '\n'; |
527 |
|
|
} |
528 |
|
|
} |
529 |
|
|
{WS}"|".*{NL} { |
530 |
|
|
if (sf_skip_ws()){ |
531 |
|
|
/* We're in the middle of a (?x: ) pattern. */ |
532 |
|
|
/* Push back everything starting at the "|" */ |
533 |
|
|
size_t amt; |
534 |
|
|
amt = strchr (yytext, '|') - yytext; |
535 |
|
|
yyless(amt); |
536 |
|
|
} |
537 |
|
|
else { |
538 |
|
|
continued_action = true; |
539 |
|
|
++linenum; |
540 |
|
|
return '\n'; |
541 |
|
|
} |
542 |
|
|
} |
543 |
|
|
|
544 |
|
|
^{WS}"/*" { |
545 |
|
|
|
546 |
|
|
if (sf_skip_ws()){ |
547 |
|
|
/* We're in the middle of a (?x: ) pattern. */ |
548 |
|
|
yy_push_state(COMMENT_DISCARD); |
549 |
|
|
} |
550 |
|
|
else{ |
551 |
|
|
yyless( yyleng - 2 ); /* put back '/', '*' */ |
552 |
|
|
bracelevel = 0; |
553 |
|
|
continued_action = false; |
554 |
|
|
BEGIN(ACTION); |
555 |
|
|
} |
556 |
|
|
} |
557 |
|
|
|
558 |
|
|
^{WS} /* allow indented rules */ ; |
559 |
|
|
|
560 |
|
|
{WS} { |
561 |
|
|
if (sf_skip_ws()){ |
562 |
|
|
/* We're in the middle of a (?x: ) pattern. */ |
563 |
|
|
} |
564 |
|
|
else{ |
565 |
|
|
/* This rule is separate from the one below because |
566 |
|
|
* otherwise we get variable trailing context, so |
567 |
|
|
* we can't build the scanner using -{f,F}. |
568 |
|
|
*/ |
569 |
|
|
bracelevel = 0; |
570 |
|
|
continued_action = false; |
571 |
|
|
BEGIN(ACTION); |
572 |
|
|
|
573 |
|
|
if ( in_rule ) |
574 |
|
|
{ |
575 |
|
|
doing_rule_action = true; |
576 |
|
|
in_rule = false; |
577 |
|
|
return '\n'; |
578 |
|
|
} |
579 |
|
|
} |
580 |
|
|
} |
581 |
|
|
|
582 |
|
|
{OPTWS}{NL} { |
583 |
|
|
if (sf_skip_ws()){ |
584 |
|
|
/* We're in the middle of a (?x: ) pattern. */ |
585 |
|
|
++linenum; |
586 |
|
|
} |
587 |
|
|
else{ |
588 |
|
|
bracelevel = 0; |
589 |
|
|
continued_action = false; |
590 |
|
|
BEGIN(ACTION); |
591 |
|
|
unput( '\n' ); /* so <ACTION> sees it */ |
592 |
|
|
|
593 |
|
|
if ( in_rule ) |
594 |
|
|
{ |
595 |
|
|
doing_rule_action = true; |
596 |
|
|
in_rule = false; |
597 |
|
|
return '\n'; |
598 |
|
|
} |
599 |
|
|
} |
600 |
|
|
} |
601 |
|
|
|
602 |
|
|
^{OPTWS}"<<EOF>>" | |
603 |
|
|
"<<EOF>>" return EOF_OP; |
604 |
|
|
|
605 |
|
|
^"%%".* { |
606 |
|
|
sectnum = 3; |
607 |
|
|
BEGIN(SECT3); |
608 |
|
|
outn("/* Begin user sect3 */"); |
609 |
|
|
yyterminate(); /* to stop the parser */ |
610 |
|
|
} |
611 |
|
|
|
612 |
|
|
"["({FIRST_CCL_CHAR}|{CCL_EXPR})({CCL_CHAR}|{CCL_EXPR})* { |
613 |
|
|
int cclval; |
614 |
|
|
|
615 |
|
|
if(yyleng < MAXLINE) |
616 |
|
|
{ |
617 |
|
|
strlcpy( nmstr, yytext, sizeof nmstr ); |
618 |
|
|
} |
619 |
|
|
else |
620 |
|
|
{ |
621 |
|
|
synerr( _("Input line too long\n")); |
622 |
|
|
FLEX_EXIT(EXIT_FAILURE); |
623 |
|
|
} |
624 |
|
|
|
625 |
|
|
/* Check to see if we've already encountered this |
626 |
|
|
* ccl. |
627 |
|
|
*/ |
628 |
|
|
if (0 /* <--- This "0" effectively disables the reuse of a |
629 |
|
|
* character class (purely based on its source text). |
630 |
|
|
* The reason it was disabled is so yacc/bison can parse |
631 |
|
|
* ccl operations, such as ccl difference and union. |
632 |
|
|
*/ |
633 |
|
|
&& (cclval = ccllookup( (u_char *) nmstr )) != 0 ) |
634 |
|
|
{ |
635 |
|
|
if ( input() != ']' ) |
636 |
|
|
synerr( _( "bad character class" ) ); |
637 |
|
|
|
638 |
|
|
yylval = cclval; |
639 |
|
|
++cclreuse; |
640 |
|
|
return PREVCCL; |
641 |
|
|
} |
642 |
|
|
else |
643 |
|
|
{ |
644 |
|
|
/* We fudge a bit. We know that this ccl will |
645 |
|
|
* soon be numbered as lastccl + 1 by cclinit. |
646 |
|
|
*/ |
647 |
|
|
cclinstal( (u_char *) nmstr, lastccl + 1 ); |
648 |
|
|
|
649 |
|
|
/* Push back everything but the leading bracket |
650 |
|
|
* so the ccl can be rescanned. |
651 |
|
|
*/ |
652 |
|
|
yyless( 1 ); |
653 |
|
|
|
654 |
|
|
BEGIN(FIRSTCCL); |
655 |
|
|
return '['; |
656 |
|
|
} |
657 |
|
|
} |
658 |
|
|
"{-}" return CCL_OP_DIFF; |
659 |
|
|
"{+}" return CCL_OP_UNION; |
660 |
|
|
|
661 |
|
|
|
662 |
|
|
/* Check for :space: at the end of the rule so we don't |
663 |
|
|
* wrap the expanded regex in '(' ')' -- breaking trailing |
664 |
|
|
* context. |
665 |
|
|
*/ |
666 |
|
|
"{"{NAME}"}"[[:space:]]? { |
667 |
|
|
u_char *nmdefptr; |
668 |
|
|
int end_is_ws, end_ch; |
669 |
|
|
|
670 |
|
|
end_ch = yytext[yyleng-1]; |
671 |
|
|
end_is_ws = end_ch != '}' ? 1 : 0; |
672 |
|
|
|
673 |
|
|
if(yyleng-1 < MAXLINE) |
674 |
|
|
{ |
675 |
|
|
strlcpy( nmstr, yytext + 1, sizeof nmstr ); |
676 |
|
|
} |
677 |
|
|
else |
678 |
|
|
{ |
679 |
|
|
synerr( _("Input line too long\n")); |
680 |
|
|
FLEX_EXIT(EXIT_FAILURE); |
681 |
|
|
} |
682 |
|
|
nmstr[yyleng - 2 - end_is_ws] = '\0'; /* chop trailing brace */ |
683 |
|
|
|
684 |
|
|
if ( (nmdefptr = ndlookup( nmstr )) == 0 ) |
685 |
|
|
format_synerr( |
686 |
|
|
_( "undefined definition {%s}" ), |
687 |
|
|
nmstr ); |
688 |
|
|
|
689 |
|
|
else |
690 |
|
|
{ /* push back name surrounded by ()'s */ |
691 |
|
|
int len = strlen( (char *) nmdefptr ); |
692 |
|
|
if (end_is_ws) |
693 |
|
|
unput(end_ch); |
694 |
|
|
|
695 |
|
|
if ( lex_compat || nmdefptr[0] == '^' || |
696 |
|
|
(len > 0 && nmdefptr[len - 1] == '$') |
697 |
|
|
|| (end_is_ws && trlcontxt && !sf_skip_ws())) |
698 |
|
|
{ /* don't use ()'s after all */ |
699 |
|
|
PUT_BACK_STRING((char *) nmdefptr, 0); |
700 |
|
|
|
701 |
|
|
if ( nmdefptr[0] == '^' ) |
702 |
|
|
BEGIN(CARETISBOL); |
703 |
|
|
} |
704 |
|
|
|
705 |
|
|
else |
706 |
|
|
{ |
707 |
|
|
unput(')'); |
708 |
|
|
PUT_BACK_STRING((char *) nmdefptr, 0); |
709 |
|
|
unput('('); |
710 |
|
|
} |
711 |
|
|
} |
712 |
|
|
} |
713 |
|
|
|
714 |
|
|
"/*" { |
715 |
|
|
if (sf_skip_ws()) |
716 |
|
|
yy_push_state(COMMENT_DISCARD); |
717 |
|
|
else{ |
718 |
|
|
/* Push back the "*" and return "/" as usual. */ |
719 |
|
|
yyless(1); |
720 |
|
|
return '/'; |
721 |
|
|
} |
722 |
|
|
} |
723 |
|
|
|
724 |
|
|
"(?#" { |
725 |
|
|
if (lex_compat || posix_compat){ |
726 |
|
|
/* Push back the "?#" and treat it like a normal parens. */ |
727 |
|
|
yyless(1); |
728 |
|
|
sf_push(); |
729 |
|
|
return '('; |
730 |
|
|
} |
731 |
|
|
else |
732 |
|
|
yy_push_state(EXTENDED_COMMENT); |
733 |
|
|
} |
734 |
|
|
"(?" { |
735 |
|
|
sf_push(); |
736 |
|
|
if (lex_compat || posix_compat) |
737 |
|
|
/* Push back the "?" and treat it like a normal parens. */ |
738 |
|
|
yyless(1); |
739 |
|
|
else |
740 |
|
|
BEGIN(GROUP_WITH_PARAMS); |
741 |
|
|
return '('; |
742 |
|
|
} |
743 |
|
|
"(" sf_push(); return '('; |
744 |
|
|
")" sf_pop(); return ')'; |
745 |
|
|
|
746 |
|
|
[/|*+?.(){}] return (unsigned char) yytext[0]; |
747 |
|
|
. RETURNCHAR; |
748 |
|
|
} |
749 |
|
|
|
750 |
|
|
|
751 |
|
|
<SC>{ |
752 |
|
|
{OPTWS}{NL}{OPTWS} ++linenum; /* Allow blank lines & continuations */ |
753 |
|
|
[,*] return (unsigned char) yytext[0]; |
754 |
|
|
">" BEGIN(SECT2); return '>'; |
755 |
|
|
">"/^ BEGIN(CARETISBOL); return '>'; |
756 |
|
|
{SCNAME} RETURNNAME; |
757 |
|
|
. { |
758 |
|
|
format_synerr( _( "bad <start condition>: %s" ), |
759 |
|
|
yytext ); |
760 |
|
|
} |
761 |
|
|
} |
762 |
|
|
|
763 |
|
|
<CARETISBOL>"^" BEGIN(SECT2); return '^'; |
764 |
|
|
|
765 |
|
|
|
766 |
|
|
<QUOTE>{ |
767 |
|
|
[^"\n] RETURNCHAR; |
768 |
|
|
\" BEGIN(SECT2); return '"'; |
769 |
|
|
|
770 |
|
|
{NL} { |
771 |
|
|
synerr( _( "missing quote" ) ); |
772 |
|
|
BEGIN(SECT2); |
773 |
|
|
++linenum; |
774 |
|
|
return '"'; |
775 |
|
|
} |
776 |
|
|
} |
777 |
|
|
|
778 |
|
|
<GROUP_WITH_PARAMS>{ |
779 |
|
|
":" BEGIN(SECT2); |
780 |
|
|
"-" BEGIN(GROUP_MINUS_PARAMS); |
781 |
|
|
i sf_set_case_ins(1); |
782 |
|
|
s sf_set_dot_all(1); |
783 |
|
|
x sf_set_skip_ws(1); |
784 |
|
|
} |
785 |
|
|
<GROUP_MINUS_PARAMS>{ |
786 |
|
|
":" BEGIN(SECT2); |
787 |
|
|
i sf_set_case_ins(0); |
788 |
|
|
s sf_set_dot_all(0); |
789 |
|
|
x sf_set_skip_ws(0); |
790 |
|
|
} |
791 |
|
|
|
792 |
|
|
<FIRSTCCL>{ |
793 |
|
|
"^"/[^-\]\n] BEGIN(CCL); return '^'; |
794 |
|
|
"^"/("-"|"]") return '^'; |
795 |
|
|
. BEGIN(CCL); RETURNCHAR; |
796 |
|
|
} |
797 |
|
|
|
798 |
|
|
<CCL>{ |
799 |
|
|
-/[^\]\n] return '-'; |
800 |
|
|
[^\]\n] RETURNCHAR; |
801 |
|
|
"]" BEGIN(SECT2); return ']'; |
802 |
|
|
.|{NL} { |
803 |
|
|
synerr( _( "bad character class" ) ); |
804 |
|
|
BEGIN(SECT2); |
805 |
|
|
return ']'; |
806 |
|
|
} |
807 |
|
|
} |
808 |
|
|
|
809 |
|
|
<FIRSTCCL,CCL>{ |
810 |
|
|
"[:alnum:]" BEGIN(CCL); return CCE_ALNUM; |
811 |
|
|
"[:alpha:]" BEGIN(CCL); return CCE_ALPHA; |
812 |
|
|
"[:blank:]" BEGIN(CCL); return CCE_BLANK; |
813 |
|
|
"[:cntrl:]" BEGIN(CCL); return CCE_CNTRL; |
814 |
|
|
"[:digit:]" BEGIN(CCL); return CCE_DIGIT; |
815 |
|
|
"[:graph:]" BEGIN(CCL); return CCE_GRAPH; |
816 |
|
|
"[:lower:]" BEGIN(CCL); return CCE_LOWER; |
817 |
|
|
"[:print:]" BEGIN(CCL); return CCE_PRINT; |
818 |
|
|
"[:punct:]" BEGIN(CCL); return CCE_PUNCT; |
819 |
|
|
"[:space:]" BEGIN(CCL); return CCE_SPACE; |
820 |
|
|
"[:upper:]" BEGIN(CCL); return CCE_UPPER; |
821 |
|
|
"[:xdigit:]" BEGIN(CCL); return CCE_XDIGIT; |
822 |
|
|
|
823 |
|
|
"[:^alnum:]" BEGIN(CCL); return CCE_NEG_ALNUM; |
824 |
|
|
"[:^alpha:]" BEGIN(CCL); return CCE_NEG_ALPHA; |
825 |
|
|
"[:^blank:]" BEGIN(CCL); return CCE_NEG_BLANK; |
826 |
|
|
"[:^cntrl:]" BEGIN(CCL); return CCE_NEG_CNTRL; |
827 |
|
|
"[:^digit:]" BEGIN(CCL); return CCE_NEG_DIGIT; |
828 |
|
|
"[:^graph:]" BEGIN(CCL); return CCE_NEG_GRAPH; |
829 |
|
|
"[:^lower:]" BEGIN(CCL); return CCE_NEG_LOWER; |
830 |
|
|
"[:^print:]" BEGIN(CCL); return CCE_NEG_PRINT; |
831 |
|
|
"[:^punct:]" BEGIN(CCL); return CCE_NEG_PUNCT; |
832 |
|
|
"[:^space:]" BEGIN(CCL); return CCE_NEG_SPACE; |
833 |
|
|
"[:^upper:]" BEGIN(CCL); return CCE_NEG_UPPER; |
834 |
|
|
"[:^xdigit:]" BEGIN(CCL); return CCE_NEG_XDIGIT; |
835 |
|
|
{CCL_EXPR} { |
836 |
|
|
format_synerr( |
837 |
|
|
_( "bad character class expression: %s" ), |
838 |
|
|
yytext ); |
839 |
|
|
BEGIN(CCL); return CCE_ALNUM; |
840 |
|
|
} |
841 |
|
|
} |
842 |
|
|
|
843 |
|
|
<NUM>{ |
844 |
|
|
[[:digit:]]+ { |
845 |
|
|
yylval = myctoi( yytext ); |
846 |
|
|
return NUMBER; |
847 |
|
|
} |
848 |
|
|
|
849 |
|
|
"," return ','; |
850 |
|
|
"}" { |
851 |
|
|
BEGIN(SECT2); |
852 |
|
|
if ( lex_compat || posix_compat ) |
853 |
|
|
return END_REPEAT_POSIX; |
854 |
|
|
else |
855 |
|
|
return END_REPEAT_FLEX; |
856 |
|
|
} |
857 |
|
|
|
858 |
|
|
. { |
859 |
|
|
synerr( _( "bad character inside {}'s" ) ); |
860 |
|
|
BEGIN(SECT2); |
861 |
|
|
return '}'; |
862 |
|
|
} |
863 |
|
|
|
864 |
|
|
{NL} { |
865 |
|
|
synerr( _( "missing }" ) ); |
866 |
|
|
BEGIN(SECT2); |
867 |
|
|
++linenum; |
868 |
|
|
return '}'; |
869 |
|
|
} |
870 |
|
|
} |
871 |
|
|
|
872 |
|
|
|
873 |
|
|
<PERCENT_BRACE_ACTION>{ |
874 |
|
|
{OPTWS}"%}".* bracelevel = 0; |
875 |
|
|
|
876 |
|
|
<ACTION>"/*" ACTION_ECHO; yy_push_state( COMMENT ); |
877 |
|
|
|
878 |
|
|
<CODEBLOCK,ACTION>{ |
879 |
|
|
"reject" { |
880 |
|
|
ACTION_ECHO; |
881 |
|
|
CHECK_REJECT(yytext); |
882 |
|
|
} |
883 |
|
|
"yymore" { |
884 |
|
|
ACTION_ECHO; |
885 |
|
|
CHECK_YYMORE(yytext); |
886 |
|
|
} |
887 |
|
|
} |
888 |
|
|
|
889 |
|
|
{M4QSTART} ACTION_ECHO_QSTART; |
890 |
|
|
{M4QEND} ACTION_ECHO_QEND; |
891 |
|
|
. ACTION_ECHO; |
892 |
|
|
{NL} { |
893 |
|
|
++linenum; |
894 |
|
|
ACTION_ECHO; |
895 |
|
|
if ( bracelevel == 0 || |
896 |
|
|
(doing_codeblock && indented_code) ) |
897 |
|
|
{ |
898 |
|
|
if ( doing_rule_action ) |
899 |
|
|
add_action( "\tYY_BREAK\n" ); |
900 |
|
|
|
901 |
|
|
doing_rule_action = doing_codeblock = false; |
902 |
|
|
BEGIN(SECT2); |
903 |
|
|
} |
904 |
|
|
} |
905 |
|
|
} |
906 |
|
|
|
907 |
|
|
|
908 |
|
|
/* Reject and YYmore() are checked for above, in PERCENT_BRACE_ACTION */ |
909 |
|
|
<ACTION>{ |
910 |
|
|
"{" ACTION_ECHO; ++bracelevel; |
911 |
|
|
"}" ACTION_ECHO; --bracelevel; |
912 |
|
|
{M4QSTART} ACTION_ECHO_QSTART; |
913 |
|
|
{M4QEND} ACTION_ECHO_QEND; |
914 |
|
|
[^[:alpha:]_{}"'/\n\[\]]+ ACTION_ECHO; |
915 |
|
|
[\[\]] ACTION_ECHO; |
916 |
|
|
{NAME} ACTION_ECHO; |
917 |
|
|
"'"([^'\\\n]|\\.)*"'" ACTION_ECHO; /* character constant */ |
918 |
|
|
\" ACTION_ECHO; BEGIN(ACTION_STRING); |
919 |
|
|
{NL} { |
920 |
|
|
++linenum; |
921 |
|
|
ACTION_ECHO; |
922 |
|
|
if ( bracelevel == 0 ) |
923 |
|
|
{ |
924 |
|
|
if ( doing_rule_action ) |
925 |
|
|
add_action( "\tYY_BREAK\n" ); |
926 |
|
|
|
927 |
|
|
doing_rule_action = false; |
928 |
|
|
BEGIN(SECT2); |
929 |
|
|
} |
930 |
|
|
} |
931 |
|
|
. ACTION_ECHO; |
932 |
|
|
} |
933 |
|
|
|
934 |
|
|
<ACTION_STRING>{ |
935 |
|
|
[^"\\\n]+ ACTION_ECHO; |
936 |
|
|
\\. ACTION_ECHO; |
937 |
|
|
{NL} ++linenum; ACTION_ECHO; BEGIN(ACTION); |
938 |
|
|
\" ACTION_ECHO; BEGIN(ACTION); |
939 |
|
|
. ACTION_ECHO; |
940 |
|
|
} |
941 |
|
|
|
942 |
|
|
<COMMENT,COMMENT_DISCARD,ACTION,ACTION_STRING><<EOF>> { |
943 |
|
|
synerr( _( "EOF encountered inside an action" ) ); |
944 |
|
|
yyterminate(); |
945 |
|
|
} |
946 |
|
|
|
947 |
|
|
<EXTENDED_COMMENT,GROUP_WITH_PARAMS,GROUP_MINUS_PARAMS><<EOF>> { |
948 |
|
|
synerr( _( "EOF encountered inside pattern" ) ); |
949 |
|
|
yyterminate(); |
950 |
|
|
} |
951 |
|
|
|
952 |
|
|
<SECT2,QUOTE,FIRSTCCL,CCL>{ESCSEQ} { |
953 |
|
|
yylval = myesc( (u_char *) yytext ); |
954 |
|
|
|
955 |
|
|
if ( YY_START == FIRSTCCL ) |
956 |
|
|
BEGIN(CCL); |
957 |
|
|
|
958 |
|
|
return CHAR; |
959 |
|
|
} |
960 |
|
|
|
961 |
|
|
|
962 |
|
|
<SECT3>{ |
963 |
|
|
{M4QSTART} fwrite (escaped_qstart, 1, strlen(escaped_qstart), yyout); |
964 |
|
|
{M4QEND} fwrite (escaped_qend, 1, strlen(escaped_qend), yyout); |
965 |
|
|
[^\[\]\n]*(\n?) ECHO; |
966 |
|
|
(.|\n) ECHO; |
967 |
|
|
<<EOF>> sectnum = 0; yyterminate(); |
968 |
|
|
} |
969 |
|
|
|
970 |
|
|
<*>.|\n format_synerr( _( "bad character: %s" ), yytext ); |
971 |
|
|
|
972 |
|
|
%% |
973 |
|
|
|
974 |
|
|
|
975 |
|
|
int yywrap() |
976 |
|
|
{ |
977 |
|
|
if ( --num_input_files > 0 ) |
978 |
✗✓ |
20 |
{ |
979 |
|
|
set_input_file( *++input_files ); |
980 |
|
|
return 0; |
981 |
|
|
} |
982 |
|
|
|
983 |
|
|
else |
984 |
|
|
return 1; |
985 |
|
10 |
} |
986 |
|
10 |
|
987 |
|
|
|
988 |
|
|
/* set_input_file - open the given file (if NULL, stdin) for scanning */ |
989 |
|
|
|
990 |
|
|
void set_input_file( file ) |
991 |
|
|
char *file; |
992 |
|
|
{ |
993 |
|
|
if ( file && strcmp( file, "-" ) ) |
994 |
✓✗✓✗
|
90 |
{ |
995 |
|
|
infilename = copy_string( file ); |
996 |
|
30 |
yyin = fopen( infilename, "r" ); |
997 |
|
30 |
|
998 |
|
|
if ( yyin == NULL ) |
999 |
✗✓ |
30 |
lerrsf( _( "can't open %s" ), file ); |
1000 |
|
|
} |
1001 |
|
|
|
1002 |
|
|
else |
1003 |
|
|
{ |
1004 |
|
|
yyin = stdin; |
1005 |
|
|
infilename = copy_string( "<stdin>" ); |
1006 |
|
|
} |
1007 |
|
|
|
1008 |
|
|
linenum = 1; |
1009 |
|
30 |
} |
1010 |
|
30 |
|