Head

GCC Code Coverage Report
Directory:	./		Exec	Total	Coverage
File:	usr.bin/lex/main.c	Lines:	295	771	38.3 %
Date:	2017-11-13	Branches:	120	504	23.8 %

/*	$OpenBSD: main.c,v 1.27 2017/01/21 08:33:07 krw Exp $	*/

/* flex - tool to generate fast lexical analyzers */

/*  Copyright (c) 1990 The Regents of the University of California. */
/*  All rights reserved. */

/*  This code is derived from software contributed to Berkeley by */
/*  Vern Paxson. */

/*  The United States Government has rights in this work pursuant */
/*  to contract no. DE-AC03-76SF00098 between the United States */
/*  Department of Energy and the University of California. */

/*  This file is part of flex. */

/*  Redistribution and use in source and binary forms, with or without */
/*  modification, are permitted provided that the following conditions */
/*  are met: */

/*  1. Redistributions of source code must retain the above copyright */
/*     notice, this list of conditions and the following disclaimer. */
/*  2. Redistributions in binary form must reproduce the above copyright */
/*     notice, this list of conditions and the following disclaimer in the */
/*     documentation and/or other materials provided with the distribution. */

/*  Neither the name of the University nor the names of its contributors */
/*  may be used to endorse or promote products derived from this software */
/*  without specific prior written permission. */

/*  THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR */
/*  IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */
/*  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
/*  PURPOSE. */



#include "flexdef.h"
#include "version.h"
#include "options.h"
#include "tables.h"

static char flex_version[] = FLEX_VERSION;

/* declare functions that have forward references */

void flexinit PROTO((int, char **));
void readin PROTO((void));
void set_up_initial_allocations PROTO((void));
static char *basename2 PROTO((char *path, int should_strip_ext));


/* these globals are all defined and commented in flexdef.h */
int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt;
int interactive, lex_compat, posix_compat, do_yylineno, useecs, fulltbl,
 usemecs;
int fullspd, gen_line_dirs, performance_report, backing_up_report;
int C_plus_plus, long_align, use_read, yytext_is_array, do_yywrap, csize;
int reentrant, bison_bridge_lval, bison_bridge_lloc;
int yymore_used, reject, real_reject, continued_action, in_rule;
int yymore_really_used, reject_really_used;
int datapos, dataline, linenum;
FILE *skelfile = NULL;
int skel_ind = 0;
char *action_array;
int action_size, defs1_offset, prolog_offset, action_offset, action_index;
char *infilename = NULL, *outfilename = NULL, *headerfilename = NULL;
int did_outfilename;
char *prefix, *yyclass, *extra_type = NULL;
int do_stdinit, use_stdout;
int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE];
int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp;
int maximum_mns, current_mns, current_max_rules;
int num_rules, num_eof_rules, default_rule, lastnfa;
int *firstst, *lastst, *finalst, *transchar, *trans1, *trans2;
int *accptnum, *assoc_rule, *state_type;
int *rule_type, *rule_linenum, *rule_useful;
int current_state_type;
int variable_trailing_context_rules;
int numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP];
int protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE];
int numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs, tecfwd[CSIZE + 1];
int tecbck[CSIZE + 1];
int lastsc, *scset, *scbol, *scxclu, *sceof;
int current_max_scs;
char **scname;
int current_max_dfa_size, current_max_xpairs;
int current_max_template_xpairs, current_max_dfas;
int lastdfa, *nxt, *chk, *tnxt;
int *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz;
union dfaacc_union *dfaacc;
int *accsiz, *dhash, numas;
int numsnpairs, jambase, jamstate;
int lastccl, *cclmap, *ccllen, *cclng, cclreuse;
int current_maxccls, current_max_ccl_tbl_size;
u_char *ccltbl;
char nmstr[MAXLINE];
int sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs;
int tmpuses, totnst, peakpairs, numuniq, numdup, hshsave;
int num_backing_up, bol_needed;
FILE *backing_up_file;
int end_of_buffer_state;
char **input_files;
int num_input_files;
jmp_buf flex_main_jmp_buf;
bool *rule_has_nl, *ccl_has_nl;
int nlch = '\n';
bool ansi_func_defs, ansi_func_protos;

bool tablesext, tablesverify, gentables;
char *tablesfilename = 0, *tablesname = 0;
struct yytbl_writer tableswr;

/* Make sure program_name is initialized so we don't crash if writing
 * out an error message before getting the program name from argv[0].
 */
char *program_name = "flex";

static const char *outfile_template = "lex.%s.%s";
static const char *backing_name = "lex.backup";
static const char *tablesfile_template = "lex.%s.tables";

/* From scan.l */
extern FILE *yyout;

static char outfile_path[MAXLINE];
static int outfile_created = 0;
static char *skelname = NULL;
static int _stdout_closed = 0;	/* flag to prevent double-fclose() on stdout. */
const char *escaped_qstart = "[[]]M4_YY_NOOP[M4_YY_NOOP[M4_YY_NOOP[[]]";
const char *escaped_qend = "[[]]M4_YY_NOOP]M4_YY_NOOP]M4_YY_NOOP[[]]";

/* For debugging. The max number of filters to apply to skeleton. */
static int preproc_level = 1000;

int flex_main PROTO((int argc, char *argv[]));
int main PROTO((int argc, char *argv[]));

int
flex_main(argc, argv)
	int argc;
	char *argv[];
{
	int i, exit_status, child_status;

	/*
	 * Set a longjmp target. Yes, I know it's a hack, but it gets worse:
	 * The return value of setjmp, if non-zero, is the desired exit code
	 * PLUS ONE. For example, if you want 'main' to return with code '2',
	 * then call longjmp() with an argument of 3. This is because it is
	 * invalid to specify a value of 0 to longjmp. FLEX_EXIT(n) should be
	 * used instead of exit(n);
	 */
	exit_status = setjmp(flex_main_jmp_buf);
	if (exit_status) {
		if (stdout && !_stdout_closed && !ferror(stdout)) {
			fflush(stdout);
			fclose(stdout);
		}
		while (wait(&child_status) > 0) {
			if (!WIFEXITED(child_status)
			    || WEXITSTATUS(child_status) != 0) {
				/*
				 * report an error of a child
				 */
				if (exit_status <= 1)
					exit_status = 2;

			}
		}
		return exit_status - 1;
	}
	flexinit(argc, argv);

	readin();

	skelout();
	/* %% [1.5] DFA */
	ntod();

	for (i = 1; i <= num_rules; ++i)
		if (!rule_useful[i] && i != default_rule)
			line_warning(_("rule cannot be matched"),
			    rule_linenum[i]);

	if (spprdflt && !reject && rule_useful[default_rule])
		line_warning(_
		    ("-s option given but default rule can be matched"),
		    rule_linenum[default_rule]);

	/* Generate the C state transition tables from the DFA. */
	make_tables();

	/*
	 * Note, flexend does not return.  It exits with its argument as
	 * status.
	 */
	flexend(0);

	return 0;		/* keep compilers/lint happy */
}

/* Wrapper around flex_main, so flex_main can be built as a library. */
int
main(argc, argv)
	int argc;
	char *argv[];
{
#if ENABLE_NLS
#if HAVE_LOCALE_H
	setlocale(LC_MESSAGES, "");
	setlocale(LC_CTYPE, "");
	textdomain(PACKAGE);
	bindtextdomain(PACKAGE, LOCALEDIR);
#endif
#endif

	if (pledge("stdio rpath wpath cpath proc exec flock", NULL) == -1) {
		fprintf(stderr, _("%s: pledge\n"),
		    program_name);
		exit(1);
	}
	return flex_main(argc, argv);
}

/* check_options - check user-specified options */

void
check_options()
{
	int i;

	if (lex_compat) {
		if (C_plus_plus)
			flexerror(_("Can't use -+ with -l option"));

		if (fulltbl || fullspd)
			flexerror(_("Can't use -f or -F with -l option"));

		if (reentrant || bison_bridge_lval)
			flexerror(_
			    ("Can't use --reentrant or --bison-bridge with -l option"));

		yytext_is_array = true;
		do_yylineno = true;
		use_read = false;
	}
#if 0
	/* This makes no sense whatsoever. I'm removing it. */
	if (do_yylineno)
		/* This should really be "maintain_backup_tables = true" */
		reject_really_used = true;
#endif

	if (csize == unspecified) {
		if ((fulltbl || fullspd) && !useecs)
			csize = DEFAULT_CSIZE;
		else
			csize = CSIZE;
	}
	if (interactive == unspecified) {
		if (fulltbl || fullspd)
			interactive = false;
		else
			interactive = true;
	}
	if (fulltbl || fullspd) {
		if (usemecs)
			flexerror(_
			    ("-Cf/-CF and -Cm don't make sense together"));

		if (interactive)
			flexerror(_("-Cf/-CF and -I are incompatible"));

		if (lex_compat)
			flexerror(_
			    ("-Cf/-CF are incompatible with lex-compatibility mode"));


		if (fulltbl && fullspd)
			flexerror(_
			    ("-Cf and -CF are mutually exclusive"));
	}
	if (C_plus_plus && fullspd)
		flexerror(_("Can't use -+ with -CF option"));

	if (C_plus_plus && yytext_is_array) {
		warn(_("%array incompatible with -+ option"));
		yytext_is_array = false;
	}
	if (C_plus_plus && (reentrant))
		flexerror(_("Options -+ and --reentrant are mutually exclusive."));

	if (C_plus_plus && bison_bridge_lval)
		flexerror(_("bison bridge not supported for the C++ scanner."));


	if (useecs) {		/* Set up doubly-linked equivalence classes. */

		/*
		 * We loop all the way up to csize, since ecgroup[csize] is
		 * the position used for NUL characters.
		 */
		ecgroup[1] = NIL;

		for (i = 2; i <= csize; ++i) {
			ecgroup[i] = i - 1;
			nextecm[i - 1] = i;
		}

		nextecm[csize] = NIL;
	} else {
		/* Put everything in its own equivalence class. */
		for (i = 1; i <= csize; ++i) {
			ecgroup[i] = i;
			nextecm[i] = BAD_SUBSCRIPT;	/* to catch errors */
		}
	}

	if (!ansi_func_defs)
		buf_m4_define(&m4defs_buf, "M4_YY_NO_ANSI_FUNC_DEFS", NULL);

	if (!ansi_func_protos)
		buf_m4_define(&m4defs_buf, "M4_YY_NO_ANSI_FUNC_PROTOS", NULL);

	if (extra_type)
		buf_m4_define(&m4defs_buf, "M4_EXTRA_TYPE_DEFS", extra_type);

	if (!use_stdout) {
		FILE *prev_stdout;

		if (!did_outfilename) {
			char *suffix;

			if (C_plus_plus)
				suffix = "cc";
			else
				suffix = "c";

			snprintf(outfile_path, sizeof(outfile_path), outfile_template,
			    prefix, suffix);

			outfilename = outfile_path;
		}
		prev_stdout = freopen(outfilename, "w+", stdout);

		if (prev_stdout == NULL)
			lerrsf(_("could not create %s"), outfilename);

		outfile_created = 1;
	}
	/* Setup the filter chain. */
	output_chain = filter_create_int(NULL, filter_tee_header, headerfilename);
	filter_create_ext(output_chain, M4, "-P", 0);
	filter_create_int(output_chain, filter_fix_linedirs, NULL);

	/* For debugging, only run the requested number of filters. */
	if (preproc_level > 0) {
		filter_truncate(output_chain, preproc_level);
		filter_apply_chain(output_chain);
	}
	yyout = stdout;


	/* always generate the tablesverify flag. */
	buf_m4_define(&m4defs_buf, "M4_YY_TABLES_VERIFY", tablesverify ? "1" : "0");
	if (tablesext)
		gentables = false;

	if (tablesverify)
		/* force generation of C tables. */
		gentables = true;


	if (tablesext) {
		FILE *tablesout;
		struct yytbl_hdr hdr;
		char *pname = 0;
		int nbytes = 0;

		buf_m4_define(&m4defs_buf, "M4_YY_TABLES_EXTERNAL", NULL);

		if (!tablesfilename) {
			nbytes = strlen(prefix) + strlen(tablesfile_template) + 2;
			tablesfilename = pname = (char *) calloc(nbytes, 1);
			snprintf(pname, nbytes, tablesfile_template, prefix);
		}
		if ((tablesout = fopen(tablesfilename, "w")) == NULL)
			lerrsf(_("could not create %s"), tablesfilename);
		free(pname);
		tablesfilename = 0;

		yytbl_writer_init(&tableswr, tablesout);

		nbytes = strlen(prefix) + strlen("tables") + 2;
		tablesname = (char *) calloc(nbytes, 1);
		snprintf(tablesname, nbytes, "%stables", prefix);
		yytbl_hdr_init(&hdr, flex_version, tablesname);

		if (yytbl_hdr_fwrite(&tableswr, &hdr) <= 0)
			flexerror(_("could not write tables header"));
	}
	if (skelname && (skelfile = fopen(skelname, "r")) == NULL)
		lerrsf(_("can't open skeleton file %s"), skelname);

	if (reentrant) {
		buf_m4_define(&m4defs_buf, "M4_YY_REENTRANT", NULL);
		if (yytext_is_array)
			buf_m4_define(&m4defs_buf, "M4_YY_TEXT_IS_ARRAY", NULL);
	}
	if (bison_bridge_lval)
		buf_m4_define(&m4defs_buf, "M4_YY_BISON_LVAL", NULL);

	if (bison_bridge_lloc)
		buf_m4_define(&m4defs_buf, "<M4_YY_BISON_LLOC>", NULL);

	buf_m4_define(&m4defs_buf, "M4_YY_PREFIX", prefix);

	if (did_outfilename)
		line_directive_out(stdout, 0);

	if (do_yylineno)
		buf_m4_define(&m4defs_buf, "M4_YY_USE_LINENO", NULL);

	/* Create the alignment type. */
	buf_strdefine(&userdef_buf, "YY_INT_ALIGNED",
	    long_align ? "long int" : "short int");

	/* Define the start condition macros. */
	{
		struct Buf tmpbuf;
		buf_init(&tmpbuf, sizeof(char));
		for (i = 1; i <= lastsc; i++) {
			char *str, *fmt = "#define %s %d\n";
			size_t strsz;

			str = (char *) malloc(strsz = strlen(fmt) + strlen(scname[i]) + (int) (1 + log10(i)) + 2);
			if (!str)
				flexfatal(_("allocation of macro definition failed"));
			snprintf(str, strsz, fmt, scname[i], i - 1);
			buf_strappend(&tmpbuf, str);
			free(str);
		}
		buf_m4_define(&m4defs_buf, "M4_YY_SC_DEFS", tmpbuf.elts);
		buf_destroy(&tmpbuf);
	}

	/* This is where we begin writing to the file. */

	/* Dump the %top code. */
	if (top_buf.elts)
		outn((char *) top_buf.elts);

	/* Dump the m4 definitions. */
	buf_print_strings(&m4defs_buf, stdout);
	m4defs_buf.nelts = 0;	/* memory leak here. */

	/* Place a bogus line directive, it will be fixed in the filter. */
	outn("#line 0 \"M4_YY_OUTFILE_NAME\"\n");

	/* Dump the user defined preproc directives. */
	if (userdef_buf.elts)
		outn((char *) (userdef_buf.elts));

	skelout();
	/* %% [1.0] */
}

/* flexend - terminate flex
 *
 * note
 *    This routine does not return.
 */

void
flexend(exit_status)
	int exit_status;

{
	static int called_before = -1;	/* prevent infinite recursion. */
	int tblsiz;

	if (++called_before)
		FLEX_EXIT(exit_status);

	if (skelfile != NULL) {
		if (ferror(skelfile))
			lerrsf(_("input error reading skeleton file %s"),
			    skelname);

		else if (fclose(skelfile))
			lerrsf(_("error closing skeleton file %s"),
			    skelname);
	}
#if 0
	fprintf(header_out,
	    "#ifdef YY_HEADER_EXPORT_START_CONDITIONS\n");
	fprintf(header_out,
	    "/* Beware! Start conditions are not prefixed. */\n");

	/* Special case for "INITIAL" */
	fprintf(header_out,
	    "#undef INITIAL\n#define INITIAL 0\n");
	for (i = 2; i <= lastsc; i++)
		fprintf(header_out, "#define %s %d\n", scname[i], i - 1);
	fprintf(header_out,
	    "#endif /* YY_HEADER_EXPORT_START_CONDITIONS */\n\n");

	/*
	 * Kill ALL flex-related macros. This is so the user can #include
	 * more than one generated header file.
	 */
	fprintf(header_out, "#ifndef YY_HEADER_NO_UNDEFS\n");
	fprintf(header_out,
	    "/* Undefine all internal macros, etc., that do no belong in the header. */\n\n");

	{
		const char *undef_list[] = {

			"BEGIN",
			"ECHO",
			"EOB_ACT_CONTINUE_SCAN",
			"EOB_ACT_END_OF_FILE",
			"EOB_ACT_LAST_MATCH",
			"FLEX_SCANNER",
			"FLEX_STD",
			"REJECT",
			"YYFARGS0",
			"YYFARGS1",
			"YYFARGS2",
			"YYFARGS3",
			"YYLMAX",
			"YYSTATE",
			"YY_AT_BOL",
			"YY_BREAK",
			"YY_BUFFER_EOF_PENDING",
			"YY_BUFFER_NEW",
			"YY_BUFFER_NORMAL",
			"YY_BUF_SIZE",
			"M4_YY_CALL_LAST_ARG",
			"M4_YY_CALL_ONLY_ARG",
			"YY_CURRENT_BUFFER",
			"YY_DECL",
			"M4_YY_DECL_LAST_ARG",
			"M4_YY_DEF_LAST_ARG",
			"M4_YY_DEF_ONLY_ARG",
			"YY_DO_BEFORE_ACTION",
			"YY_END_OF_BUFFER",
			"YY_END_OF_BUFFER_CHAR",
			"YY_EXIT_FAILURE",
			"YY_EXTRA_TYPE",
			"YY_FATAL_ERROR",
			"YY_FLEX_DEFINED_ECHO",
			"YY_FLEX_LEX_COMPAT",
			"YY_FLEX_MAJOR_VERSION",
			"YY_FLEX_MINOR_VERSION",
			"YY_FLEX_SUBMINOR_VERSION",
			"YY_FLUSH_BUFFER",
			"YY_G",
			"YY_INPUT",
			"YY_INTERACTIVE",
			"YY_INT_ALIGNED",
			"YY_LAST_ARG",
			"YY_LESS_LINENO",
			"YY_LEX_ARGS",
			"YY_LEX_DECLARATION",
			"YY_LEX_PROTO",
			"YY_MAIN",
			"YY_MORE_ADJ",
			"YY_NEED_STRLEN",
			"YY_NEW_FILE",
			"YY_NULL",
			"YY_NUM_RULES",
			"YY_ONLY_ARG",
			"YY_PARAMS",
			"YY_PROTO",
			"M4_YY_PROTO_LAST_ARG",
			"M4_YY_PROTO_ONLY_ARG void",
			"YY_READ_BUF_SIZE",
			"YY_REENTRANT",
			"YY_RESTORE_YY_MORE_OFFSET",
			"YY_RULE_SETUP",
			"YY_SC_TO_UI",
			"YY_SKIP_YYWRAP",
			"YY_START",
			"YY_START_STACK_INCR",
			"YY_STATE_EOF",
			"YY_STDINIT",
			"YY_TRAILING_HEAD_MASK",
			"YY_TRAILING_MASK",
			"YY_USER_ACTION",
			"YY_USE_CONST",
			"YY_USE_PROTOS",
			"unput",
			"yyTABLES_NAME",
			"yy_create_buffer",
			"yy_delete_buffer",
			"yy_flex_debug",
			"yy_flush_buffer",
			"yy_init_buffer",
			"yy_load_buffer_state",
			"yy_new_buffer",
			"yy_scan_buffer",
			"yy_scan_bytes",
			"yy_scan_string",
			"yy_set_bol",
			"yy_set_interactive",
			"yy_switch_to_buffer",
			"yypush_buffer_state",
			"yypop_buffer_state",
			"yyensure_buffer_stack",
			"yyalloc",
			"yyconst",
			"yyextra",
			"yyfree",
			"yyget_debug",
			"yyget_extra",
			"yyget_in",
			"yyget_leng",
			"yyget_lineno",
			"yyget_lloc",
			"yyget_lval",
			"yyget_out",
			"yyget_text",
			"yyin",
			"yyleng",
			"yyless",
			"yylex",
			"yylex_destroy",
			"yylex_init",
			"yylex_init_extra",
			"yylineno",
			"yylloc",
			"yylval",
			"yymore",
			"yyout",
			"yyrealloc",
			"yyrestart",
			"yyset_debug",
			"yyset_extra",
			"yyset_in",
			"yyset_lineno",
			"yyset_lloc",
			"yyset_lval",
			"yyset_out",
			"yytables_destroy",
			"yytables_fload",
			"yyterminate",
			"yytext",
			"yytext_ptr",
			"yywrap",

			/* must be null-terminated */
		NULL};


		for (i = 0; undef_list[i] != NULL; i++)
			fprintf(header_out, "#undef %s\n", undef_list[i]);
	}

	/* undef any of the auto-generated symbols. */
	for (i = 0; i < defs_buf.nelts; i++) {

		/* don't undef start conditions */
		if (sclookup(((char **) defs_buf.elts)[i]) > 0)
			continue;
		fprintf(header_out, "#undef %s\n",
		    ((char **) defs_buf.elts)[i]);
	}

	fprintf(header_out,
	    "#endif /* !YY_HEADER_NO_UNDEFS */\n");
	fprintf(header_out, "\n");
	fprintf(header_out, "#undef %sIN_HEADER\n", prefix);
	fprintf(header_out, "#endif /* %sHEADER_H */\n", prefix);

	if (ferror(header_out))
		lerrsf(_("error creating header file %s"),
		    headerfilename);
	fflush(header_out);
	fclose(header_out);
#endif

	if (exit_status != 0 && outfile_created) {
		if (ferror(stdout))
			lerrsf(_("error writing output file %s"),
			    outfilename);

		else if ((_stdout_closed = 1) && fclose(stdout))
			lerrsf(_("error closing output file %s"),
			    outfilename);

		else if (unlink(outfilename))
			lerrsf(_("error deleting output file %s"),
			    outfilename);
	}
	if (backing_up_report && backing_up_file) {
		if (num_backing_up == 0)
			fprintf(backing_up_file, _("No backing up.\n"));
		else if (fullspd || fulltbl)
			fprintf(backing_up_file,
			    _
			    ("%d backing up (non-accepting) states.\n"),
			    num_backing_up);
		else
			fprintf(backing_up_file,
			    _("Compressed tables always back up.\n"));

		if (ferror(backing_up_file))
			lerrsf(_("error writing backup file %s"),
			    backing_name);

		else if (fclose(backing_up_file))
			lerrsf(_("error closing backup file %s"),
			    backing_name);
	}
	if (printstats) {
		fprintf(stderr, _("%s version %s usage statistics:\n"),
		    program_name, flex_version);

		fprintf(stderr, _("  scanner options: -"));

		if (C_plus_plus)
			putc('+', stderr);
		if (backing_up_report)
			putc('b', stderr);
		if (ddebug)
			putc('d', stderr);
		if (sf_case_ins())
			putc('i', stderr);
		if (lex_compat)
			putc('l', stderr);
		if (posix_compat)
			putc('X', stderr);
		if (performance_report > 0)
			putc('p', stderr);
		if (performance_report > 1)
			putc('p', stderr);
		if (spprdflt)
			putc('s', stderr);
		if (reentrant)
			fputs("--reentrant", stderr);
		if (bison_bridge_lval)
			fputs("--bison-bridge", stderr);
		if (bison_bridge_lloc)
			fputs("--bison-locations", stderr);
		if (use_stdout)
			putc('t', stderr);
		if (printstats)
			putc('v', stderr);	/* always true! */
		if (nowarn)
			putc('w', stderr);
		if (interactive == false)
			putc('B', stderr);
		if (interactive == true)
			putc('I', stderr);
		if (!gen_line_dirs)
			putc('L', stderr);
		if (trace)
			putc('T', stderr);

		if (csize == unspecified)
			/*
			 * We encountered an error fairly early on, so csize
			 * never got specified.  Define it now, to prevent
			 * bogus table sizes being written out below.
			 */
			csize = 256;

		if (csize == 128)
			putc('7', stderr);
		else
			putc('8', stderr);

		fprintf(stderr, " -C");

		if (long_align)
			putc('a', stderr);
		if (fulltbl)
			putc('f', stderr);
		if (fullspd)
			putc('F', stderr);
		if (useecs)
			putc('e', stderr);
		if (usemecs)
			putc('m', stderr);
		if (use_read)
			putc('r', stderr);

		if (did_outfilename)
			fprintf(stderr, " -o%s", outfilename);

		if (skelname)
			fprintf(stderr, " -S%s", skelname);

		if (strcmp(prefix, "yy"))
			fprintf(stderr, " -P%s", prefix);

		putc('\n', stderr);

		fprintf(stderr, _("  %d/%d NFA states\n"),
		    lastnfa, current_mns);
		fprintf(stderr, _("  %d/%d DFA states (%d words)\n"),
		    lastdfa, current_max_dfas, totnst);
		fprintf(stderr, _("  %d rules\n"),
		    num_rules + num_eof_rules -
		    1 /* - 1 for def. rule */ );

		if (num_backing_up == 0)
			fprintf(stderr, _("  No backing up\n"));
		else if (fullspd || fulltbl)
			fprintf(stderr,
			    _
			    ("  %d backing-up (non-accepting) states\n"),
			    num_backing_up);
		else
			fprintf(stderr,
			    _
			    ("  Compressed tables always back-up\n"));

		if (bol_needed)
			fprintf(stderr,
			    _("  Beginning-of-line patterns used\n"));

		fprintf(stderr, _("  %d/%d start conditions\n"), lastsc,
		    current_max_scs);
		fprintf(stderr,
		    _
		    ("  %d epsilon states, %d double epsilon states\n"),
		    numeps, eps2);

		if (lastccl == 0)
			fprintf(stderr, _("  no character classes\n"));
		else
			fprintf(stderr,
			    _
			    ("  %d/%d character classes needed %d/%d words of storage, %d reused\n"),
			    lastccl, current_maxccls,
			    cclmap[lastccl] + ccllen[lastccl],
			    current_max_ccl_tbl_size, cclreuse);

		fprintf(stderr, _("  %d state/nextstate pairs created\n"),
		    numsnpairs);
		fprintf(stderr,
		    _("  %d/%d unique/duplicate transitions\n"),
		    numuniq, numdup);

		if (fulltbl) {
			tblsiz = lastdfa * numecs;
			fprintf(stderr, _("  %d table entries\n"),
			    tblsiz);
		} else {
			tblsiz = 2 * (lastdfa + numtemps) + 2 * tblend;

			fprintf(stderr,
			    _("  %d/%d base-def entries created\n"),
			    lastdfa + numtemps, current_max_dfas);
			fprintf(stderr,
			    _
			    ("  %d/%d (peak %d) nxt-chk entries created\n"),
			    tblend, current_max_xpairs, peakpairs);
			fprintf(stderr,
			    _
			    ("  %d/%d (peak %d) template nxt-chk entries created\n"),
			    numtemps * nummecs,
			    current_max_template_xpairs,
			    numtemps * numecs);
			fprintf(stderr, _("  %d empty table entries\n"),
			    nummt);
			fprintf(stderr, _("  %d protos created\n"),
			    numprots);
			fprintf(stderr,
			    _("  %d templates created, %d uses\n"),
			    numtemps, tmpuses);
		}

		if (useecs) {
			tblsiz = tblsiz + csize;
			fprintf(stderr,
			    _
			    ("  %d/%d equivalence classes created\n"),
			    numecs, csize);
		}
		if (usemecs) {
			tblsiz = tblsiz + numecs;
			fprintf(stderr,
			    _
			    ("  %d/%d meta-equivalence classes created\n"),
			    nummecs, csize);
		}
		fprintf(stderr,
		    _
		    ("  %d (%d saved) hash collisions, %d DFAs equal\n"),
		    hshcol, hshsave, dfaeql);
		fprintf(stderr, _("  %d sets of reallocations needed\n"),
		    num_reallocs);
		fprintf(stderr, _("  %d total table entries needed\n"),
		    tblsiz);
	}
	FLEX_EXIT(exit_status);
}


/* flexinit - initialize flex */

void
flexinit(argc, argv)
	int argc;
	char **argv;
{
	int i, sawcmpflag, rv, optind;
	char *arg;
	scanopt_t sopt;

	printstats = syntaxerror = trace = spprdflt = false;
	lex_compat = posix_compat = C_plus_plus = backing_up_report =
	    ddebug = fulltbl = false;
	fullspd = long_align = nowarn = yymore_used = continued_action =
	    false;
	do_yylineno = yytext_is_array = in_rule = reject = do_stdinit =
	    false;
	yymore_really_used = reject_really_used = unspecified;
	interactive = csize = unspecified;
	do_yywrap = gen_line_dirs = usemecs = useecs = true;
	reentrant = bison_bridge_lval = bison_bridge_lloc = false;
	performance_report = 0;
	did_outfilename = 0;
	prefix = "yy";
	yyclass = 0;
	use_read = use_stdout = false;
	tablesext = tablesverify = false;
	gentables = true;
	tablesfilename = tablesname = NULL;
	ansi_func_defs = ansi_func_protos = true;

	sawcmpflag = false;

	/* Initialize dynamic array for holding the rule actions. */
	action_size = 2048;	/* default size of action array in bytes */
	action_array = allocate_character_array(action_size);
	defs1_offset = prolog_offset = action_offset = action_index = 0;
	action_array[0] = '\0';

	/* Initialize any buffers. */
	buf_init(&userdef_buf, sizeof(char));	/* one long string */
	buf_init(&defs_buf, sizeof(char *));	/* list of strings */
	buf_init(&yydmap_buf, sizeof(char));	/* one long string */
	buf_init(&top_buf, sizeof(char));	/* one long string */

	{
		const char *m4defs_init_str[] = {"m4_changequote\n",
		"m4_changequote([[, ]])\n"};
		buf_init(&m4defs_buf, sizeof(char *));
		buf_append(&m4defs_buf, &m4defs_init_str, 2);
	}

	sf_init();

	/* initialize regex lib */
	flex_init_regex();

	/* Enable C++ if program name ends with '+'. */
	program_name = basename2(argv[0], 0);

	if (program_name[0] != '\0' &&
	    program_name[strlen(program_name) - 1] == '+')
		C_plus_plus = true;

	/* read flags */
	sopt = scanopt_init(flexopts, argc, argv, 0);
	if (!sopt) {
		/* This will only happen when flexopts array is altered. */
		fprintf(stderr,
		    _("Internal error. flexopts are malformed.\n"));
		FLEX_EXIT(1);
	}
	while ((rv = scanopt(sopt, &arg, &optind)) != 0) {

		if (rv < 0) {
			/*
			 * Scanopt has already printed an option-specific
			 * error message.
			 */
			fprintf(stderr,
			    _
			    ("Try `%s --help' for more information.\n"),
			    program_name);
			FLEX_EXIT(1);
		}
		switch ((enum flexopt_flag_t) rv) {
		case OPT_CPLUSPLUS:
			C_plus_plus = true;
			break;

		case OPT_BATCH:
			interactive = false;
			break;

		case OPT_BACKUP:
			backing_up_report = true;
			break;

		case OPT_DONOTHING:
			break;

		case OPT_COMPRESSION:
			if (!sawcmpflag) {
				useecs = false;
				usemecs = false;
				fulltbl = false;
				sawcmpflag = true;
			}
			for (i = 0; arg && arg[i] != '\0'; i++)
				switch (arg[i]) {
				case 'a':
					long_align = true;
					break;

				case 'e':
					useecs = true;
					break;

				case 'F':
					fullspd = true;
					break;

				case 'f':
					fulltbl = true;
					break;

				case 'm':
					usemecs = true;
					break;

				case 'r':
					use_read = true;
					break;

				default:
					lerrif(_
					    ("unknown -C option '%c'"),
					    (int) arg[i]);
					break;
				}
			break;

		case OPT_DEBUG:
			ddebug = true;
			break;

		case OPT_NO_DEBUG:
			ddebug = false;
			break;

		case OPT_FULL:
			useecs = usemecs = false;
			use_read = fulltbl = true;
			break;

		case OPT_FAST:
			useecs = usemecs = false;
			use_read = fullspd = true;
			break;

		case OPT_HELP:
			usage();
			FLEX_EXIT(0);

		case OPT_INTERACTIVE:
			interactive = true;
			break;

		case OPT_CASE_INSENSITIVE:
			sf_set_case_ins(true);
			break;

		case OPT_LEX_COMPAT:
			lex_compat = true;
			break;

		case OPT_POSIX_COMPAT:
			posix_compat = true;
			break;

		case OPT_PREPROC_LEVEL:
			preproc_level = strtol(arg, NULL, 0);
			break;

		case OPT_MAIN:
			buf_strdefine(&userdef_buf, "YY_MAIN", "1");
			do_yywrap = false;
			break;

		case OPT_NO_MAIN:
			buf_strdefine(&userdef_buf, "YY_MAIN", "0");
			break;

		case OPT_NO_LINE:
			gen_line_dirs = false;
			break;

		case OPT_OUTFILE:
			outfilename = arg;
			did_outfilename = 1;
			break;

		case OPT_PREFIX:
			prefix = arg;
			break;

		case OPT_PERF_REPORT:
			++performance_report;
			break;

		case OPT_BISON_BRIDGE:
			bison_bridge_lval = true;
			break;

		case OPT_BISON_BRIDGE_LOCATIONS:
			bison_bridge_lval = bison_bridge_lloc = true;
			break;

		case OPT_REENTRANT:
			reentrant = true;
			break;

		case OPT_NO_REENTRANT:
			reentrant = false;
			break;

		case OPT_SKEL:
			skelname = arg;
			break;

		case OPT_DEFAULT:
			spprdflt = false;
			break;

		case OPT_NO_DEFAULT:
			spprdflt = true;
			break;

		case OPT_STDOUT:
			use_stdout = true;
			break;

		case OPT_NO_UNISTD_H:
			//buf_strdefine(&userdef_buf, "YY_NO_UNISTD_H", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_UNISTD_H", 0);
			break;

		case OPT_TABLES_FILE:
			tablesext = true;
			tablesfilename = arg;
			break;

		case OPT_TABLES_VERIFY:
			tablesverify = true;
			break;

		case OPT_TRACE:
			trace = true;
			break;

		case OPT_VERBOSE:
			printstats = true;
			break;

		case OPT_VERSION:
			printf(_("%s %s\n"), program_name, flex_version);
			FLEX_EXIT(0);

		case OPT_WARN:
			nowarn = false;
			break;

		case OPT_NO_WARN:
			nowarn = true;
			break;

		case OPT_7BIT:
			csize = 128;
			break;

		case OPT_8BIT:
			csize = CSIZE;
			break;

		case OPT_ALIGN:
			long_align = true;
			break;

		case OPT_NO_ALIGN:
			long_align = false;
			break;

		case OPT_ALWAYS_INTERACTIVE:
			buf_m4_define(&m4defs_buf, "M4_YY_ALWAYS_INTERACTIVE", 0);
			break;

		case OPT_NEVER_INTERACTIVE:
			buf_m4_define(&m4defs_buf, "M4_YY_NEVER_INTERACTIVE", 0);
			break;

		case OPT_ARRAY:
			yytext_is_array = true;
			break;

		case OPT_POINTER:
			yytext_is_array = false;
			break;

		case OPT_ECS:
			useecs = true;
			break;

		case OPT_NO_ECS:
			useecs = false;
			break;

		case OPT_HEADER_FILE:
			headerfilename = arg;
			break;

		case OPT_META_ECS:
			usemecs = true;
			break;

		case OPT_NO_META_ECS:
			usemecs = false;
			break;

		case OPT_PREPROCDEFINE:
			{
				/* arg is "symbol" or "symbol=definition". */
				char *def;

				for (def = arg;
				    *def != '\0' && *def != '='; ++def);

				buf_strappend(&userdef_buf, "#define ");
				if (*def == '\0') {
					buf_strappend(&userdef_buf, arg);
					buf_strappend(&userdef_buf,
					    " 1\n");
				} else {
					buf_strnappend(&userdef_buf, arg,
					    def - arg);
					buf_strappend(&userdef_buf, " ");
					buf_strappend(&userdef_buf,
					    def + 1);
					buf_strappend(&userdef_buf, "\n");
				}
			}
			break;

		case OPT_READ:
			use_read = true;
			break;

		case OPT_STACK:
			//buf_strdefine(&userdef_buf, "YY_STACK_USED", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_STACK_USED", 0);
			break;

		case OPT_STDINIT:
			do_stdinit = true;
			break;

		case OPT_NO_STDINIT:
			do_stdinit = false;
			break;

		case OPT_YYCLASS:
			yyclass = arg;
			break;

		case OPT_YYLINENO:
			do_yylineno = true;
			break;

		case OPT_NO_YYLINENO:
			do_yylineno = false;
			break;

		case OPT_YYWRAP:
			do_yywrap = true;
			break;

		case OPT_NO_YYWRAP:
			do_yywrap = false;
			break;

		case OPT_YYMORE:
			yymore_really_used = true;
			break;

		case OPT_NO_YYMORE:
			yymore_really_used = false;
			break;

		case OPT_REJECT:
			reject_really_used = true;
			break;

		case OPT_NO_REJECT:
			reject_really_used = false;
			break;

		case OPT_NO_ANSI_FUNC_DEFS:
			ansi_func_defs = false;
			break;

		case OPT_NO_ANSI_FUNC_PROTOS:
			ansi_func_protos = false;
			break;

		case OPT_NO_YY_PUSH_STATE:
			//buf_strdefine(&userdef_buf, "YY_NO_PUSH_STATE", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_PUSH_STATE", 0);
			break;
		case OPT_NO_YY_POP_STATE:
			//buf_strdefine(&userdef_buf, "YY_NO_POP_STATE", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_POP_STATE", 0);
			break;
		case OPT_NO_YY_TOP_STATE:
			//buf_strdefine(&userdef_buf, "YY_NO_TOP_STATE", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_TOP_STATE", 0);
			break;
		case OPT_NO_UNPUT:
			//buf_strdefine(&userdef_buf, "YY_NO_UNPUT", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_UNPUT", 0);
			break;
		case OPT_NO_YY_SCAN_BUFFER:
			//buf_strdefine(&userdef_buf, "YY_NO_SCAN_BUFFER", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SCAN_BUFFER", 0);
			break;
		case OPT_NO_YY_SCAN_BYTES:
			//buf_strdefine(&userdef_buf, "YY_NO_SCAN_BYTES", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SCAN_BYTES", 0);
			break;
		case OPT_NO_YY_SCAN_STRING:
			//buf_strdefine(&userdef_buf, "YY_NO_SCAN_STRING", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SCAN_STRING", 0);
			break;
		case OPT_NO_YYGET_EXTRA:
			//buf_strdefine(&userdef_buf, "YY_NO_GET_EXTRA", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_EXTRA", 0);
			break;
		case OPT_NO_YYSET_EXTRA:
			//buf_strdefine(&userdef_buf, "YY_NO_SET_EXTRA", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_EXTRA", 0);
			break;
		case OPT_NO_YYGET_LENG:
			//buf_strdefine(&userdef_buf, "YY_NO_GET_LENG", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_LENG", 0);
			break;
		case OPT_NO_YYGET_TEXT:
			//buf_strdefine(&userdef_buf, "YY_NO_GET_TEXT", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_TEXT", 0);
			break;
		case OPT_NO_YYGET_LINENO:
			//buf_strdefine(&userdef_buf, "YY_NO_GET_LINENO", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_LINENO", 0);
			break;
		case OPT_NO_YYSET_LINENO:
			//buf_strdefine(&userdef_buf, "YY_NO_SET_LINENO", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_LINENO", 0);
			break;
		case OPT_NO_YYGET_IN:
			//buf_strdefine(&userdef_buf, "YY_NO_GET_IN", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_IN", 0);
			break;
		case OPT_NO_YYSET_IN:
			//buf_strdefine(&userdef_buf, "YY_NO_SET_IN", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_IN", 0);
			break;
		case OPT_NO_YYGET_OUT:
			//buf_strdefine(&userdef_buf, "YY_NO_GET_OUT", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_OUT", 0);
			break;
		case OPT_NO_YYSET_OUT:
			//buf_strdefine(&userdef_buf, "YY_NO_SET_OUT", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_OUT", 0);
			break;
		case OPT_NO_YYGET_LVAL:
			//buf_strdefine(&userdef_buf, "YY_NO_GET_LVAL", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_LVAL", 0);
			break;
		case OPT_NO_YYSET_LVAL:
			//buf_strdefine(&userdef_buf, "YY_NO_SET_LVAL", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_LVAL", 0);
			break;
		case OPT_NO_YYGET_LLOC:
			//buf_strdefine(&userdef_buf, "YY_NO_GET_LLOC", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_LLOC", 0);
			break;
		case OPT_NO_YYSET_LLOC:
			//buf_strdefine(&userdef_buf, "YY_NO_SET_LLOC", "1");
			buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_LLOC", 0);
			break;

		}		/* switch */
	}			/* while scanopt() */

	scanopt_destroy(sopt);

	num_input_files = argc - optind;
	input_files = argv + optind;
	set_input_file(num_input_files > 0 ? input_files[0] : NULL);

	lastccl = lastsc = lastdfa = lastnfa = 0;
	num_rules = num_eof_rules = default_rule = 0;
	numas = numsnpairs = tmpuses = 0;
	numecs = numeps = eps2 = num_reallocs = hshcol = dfaeql = totnst =
	    0;
	numuniq = numdup = hshsave = eofseen = datapos = dataline = 0;
	num_backing_up = onesp = numprots = 0;
	variable_trailing_context_rules = bol_needed = false;

	linenum = sectnum = 1;
	firstprot = NIL;

	/*
	 * Used in mkprot() so that the first proto goes in slot 1 of the
	 * proto queue.
	 */
	lastprot = 1;

	set_up_initial_allocations();
}


/* readin - read in the rules section of the input file(s) */

void
readin()
{
	static char yy_stdinit[] = "FILE *yyin = stdin, *yyout = stdout;";
	static char yy_nostdinit[] =
	"FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;";

	line_directive_out((FILE *) 0, 1);

	if (yyparse()) {
		pinpoint_message(_("fatal parse error"));
		flexend(1);
	}
	if (syntaxerror)
		flexend(1);

	/*
	 * If the user explicitly requested posix compatibility by specifing
	 * the posix-compat option, then we check for conflicting options.
	 * However, if the POSIXLY_CORRECT variable is set, then we quietly
	 * make flex as posix-compatible as possible.  This is the
	 * recommended behavior according to the GNU Coding Standards.
	 *
	 * Note: The posix option was added to flex to provide the posix
	 * behavior of the repeat operator in regular expressions, e.g.,
	 * `ab{3}'
	 */
	if (posix_compat) {
		/*
		 * TODO: This is where we try to make flex behave according
		 * to posiz, AND check for conflicting options. How far
		 * should we go with this? Should we disable all the neat-o
		 * flex features?
		 */
		/*
		 * Update: Estes says no, since other flex features don't
		 * violate posix.
		 */
	}
	if (getenv("POSIXLY_CORRECT")) {
		posix_compat = true;
	}
	if (backing_up_report) {
		backing_up_file = fopen(backing_name, "w");
		if (backing_up_file == NULL)
			lerrsf(_
			    ("could not create backing-up info file %s"),
			    backing_name);
	} else
		backing_up_file = NULL;

	if (yymore_really_used == true)
		yymore_used = true;
	else if (yymore_really_used == false)
		yymore_used = false;

	if (reject_really_used == true)
		reject = true;
	else if (reject_really_used == false)
		reject = false;

	if (performance_report > 0) {
		if (lex_compat) {
			fprintf(stderr,
			    _
			    ("-l AT&T lex compatibility option entails a large performance penalty\n"));
			fprintf(stderr,
			    _
			    (" and may be the actual source of other reported performance penalties\n"));
		} else if (do_yylineno) {
			fprintf(stderr,
			    _
			    ("%%option yylineno entails a performance penalty ONLY on rules that can match newline characters\n"));
		}
		if (performance_report > 1) {
			if (interactive)
				fprintf(stderr,
				    _
				    ("-I (interactive) entails a minor performance penalty\n"));

			if (yymore_used)
				fprintf(stderr,
				    _
				    ("yymore() entails a minor performance penalty\n"));
		}
		if (reject)
			fprintf(stderr,
			    _
			    ("REJECT entails a large performance penalty\n"));

		if (variable_trailing_context_rules)
			fprintf(stderr,
			    _
			    ("Variable trailing context rules entail a large performance penalty\n"));
	}
	if (reject)
		real_reject = true;

	if (variable_trailing_context_rules)
		reject = true;

	if ((fulltbl || fullspd) && reject) {
		if (real_reject)
			flexerror(_
			    ("REJECT cannot be used with -f or -F"));
		else if (do_yylineno)
			flexerror(_
			    ("%option yylineno cannot be used with REJECT"));
		else
			flexerror(_
			    ("variable trailing context rules cannot be used with -f or -F"));
	}
	if (reject) {
		out_m4_define("M4_YY_USES_REJECT", NULL);
		//outn("\n#define YY_USES_REJECT");
	}
	if (!do_yywrap) {
		if (!C_plus_plus) {
			if (reentrant)
				outn("\n#define yywrap(yyscanner) 1");
			else
				outn("\n#define yywrap() 1");
		}
		outn("#define YY_SKIP_YYWRAP");
	}
	if (ddebug)
		outn("\n#define FLEX_DEBUG");

	OUT_BEGIN_CODE();
	if (csize == 256)
		outn("typedef unsigned char YY_CHAR;");
	else
		outn("typedef char YY_CHAR;");
	OUT_END_CODE();

	if (C_plus_plus) {
		outn("#define yytext_ptr yytext");

		if (interactive)
			outn("#define YY_INTERACTIVE");
	} else {
		OUT_BEGIN_CODE();
		/* In reentrant scanner, stdinit is handled in flex.skl. */
		if (do_stdinit) {
			if (reentrant) {
				outn("#define YY_STDINIT");
			}
			outn(yy_stdinit);
		} else {
			if (!reentrant)
				outn(yy_nostdinit);
		}
		OUT_END_CODE();
	}

	OUT_BEGIN_CODE();
	if (fullspd)
		outn("typedef yyconst struct yy_trans_info *yy_state_type;");
	else if (!C_plus_plus)
		outn("typedef int yy_state_type;");
	OUT_END_CODE();

	if (lex_compat)
		outn("#define YY_FLEX_LEX_COMPAT");

	if (!C_plus_plus && !reentrant) {
		outn("extern int yylineno;");
		OUT_BEGIN_CODE();
		outn("int yylineno = 1;");
		OUT_END_CODE();
	}
	if (C_plus_plus) {
		outn("\n#include <FlexLexer.h>");

		if (!do_yywrap) {
			outn("\nint yyFlexLexer::yywrap() { return 1; }");
		}
		if (yyclass) {
			outn("int yyFlexLexer::yylex()");
			outn("\t{");
			outn("\tLexerError( \"yyFlexLexer::yylex invoked but %option yyclass used\" );");
			outn("\treturn 0;");
			outn("\t}");

			out_str("\n#define YY_DECL int %s::yylex()\n",
			    yyclass);
		}
	} else {

		/*
		 * Watch out: yytext_ptr is a variable when yytext is an
		 * array, but it's a macro when yytext is a pointer.
		 */
		if (yytext_is_array) {
			if (!reentrant)
				outn("extern char yytext[];\n");
		} else {
			if (reentrant) {
				outn("#define yytext_ptr yytext_r");
			} else {
				outn("extern char *yytext;");
				outn("#define yytext_ptr yytext");
			}
		}

		if (yyclass)
			flexerror(_
			    ("%option yyclass only meaningful for C++ scanners"));
	}

	if (useecs)
		numecs = cre8ecs(nextecm, ecgroup, csize);
	else
		numecs = csize;

	/* Now map the equivalence class for NUL to its expected place. */
	ecgroup[0] = ecgroup[csize];
	NUL_ec = ABS(ecgroup[0]);

	if (useecs)
		ccl2ecl();
}


/* set_up_initial_allocations - allocate memory for internal tables */

void
set_up_initial_allocations()
{
	maximum_mns = (long_align ? MAXIMUM_MNS_LONG : MAXIMUM_MNS);
	current_mns = INITIAL_MNS;
	firstst = allocate_integer_array(current_mns);
	lastst = allocate_integer_array(current_mns);
	finalst = allocate_integer_array(current_mns);
	transchar = allocate_integer_array(current_mns);
	trans1 = allocate_integer_array(current_mns);
	trans2 = allocate_integer_array(current_mns);
	accptnum = allocate_integer_array(current_mns);
	assoc_rule = allocate_integer_array(current_mns);
	state_type = allocate_integer_array(current_mns);

	current_max_rules = INITIAL_MAX_RULES;
	rule_type = allocate_integer_array(current_max_rules);
	rule_linenum = allocate_integer_array(current_max_rules);
	rule_useful = allocate_integer_array(current_max_rules);
	rule_has_nl = allocate_bool_array(current_max_rules);

	current_max_scs = INITIAL_MAX_SCS;
	scset = allocate_integer_array(current_max_scs);
	scbol = allocate_integer_array(current_max_scs);
	scxclu = allocate_integer_array(current_max_scs);
	sceof = allocate_integer_array(current_max_scs);
	scname = allocate_char_ptr_array(current_max_scs);

	current_maxccls = INITIAL_MAX_CCLS;
	cclmap = allocate_integer_array(current_maxccls);
	ccllen = allocate_integer_array(current_maxccls);
	cclng = allocate_integer_array(current_maxccls);
	ccl_has_nl = allocate_bool_array(current_maxccls);

	current_max_ccl_tbl_size = INITIAL_MAX_CCL_TBL_SIZE;
	ccltbl = allocate_Character_array(current_max_ccl_tbl_size);

	current_max_dfa_size = INITIAL_MAX_DFA_SIZE;

	current_max_xpairs = INITIAL_MAX_XPAIRS;
	nxt = allocate_integer_array(current_max_xpairs);
	chk = allocate_integer_array(current_max_xpairs);

	current_max_template_xpairs = INITIAL_MAX_TEMPLATE_XPAIRS;
	tnxt = allocate_integer_array(current_max_template_xpairs);

	current_max_dfas = INITIAL_MAX_DFAS;
	base = allocate_integer_array(current_max_dfas);
	def = allocate_integer_array(current_max_dfas);
	dfasiz = allocate_integer_array(current_max_dfas);
	accsiz = allocate_integer_array(current_max_dfas);
	dhash = allocate_integer_array(current_max_dfas);
	dss = allocate_int_ptr_array(current_max_dfas);
	dfaacc = allocate_dfaacc_union(current_max_dfas);

	nultrans = (int *) 0;
}


/* extracts basename from path, optionally stripping the extension "\.*"
 * (same concept as /bin/sh `basename`, but different handling of extension). */
static char *
basename2(path, strip_ext)
	char *path;
	int strip_ext;		/* boolean */
{
	char *b, *e = 0;

	b = path;
	for (b = path; *path; path++)
		if (*path == '/')
			b = path + 1;
		else if (*path == '.')
			e = path;

	if (strip_ext && e && e > b)
		*e = '\0';
	return b;
}

void
usage()
{
	FILE *f = stdout;

	if (!did_outfilename) {
		snprintf(outfile_path, sizeof(outfile_path), outfile_template,
		    prefix, C_plus_plus ? "cc" : "c");
		outfilename = outfile_path;
	}
	fprintf(f, _("Usage: %s [OPTIONS] [FILE]...\n"), program_name);
	fprintf(f,
	    _
	    ("Generates programs that perform pattern-matching on text.\n"
		"\n" "Table Compression:\n"
		"  -Ca, --align      trade off larger tables for better memory alignment\n"
		"  -Ce, --ecs        construct equivalence classes\n"
		"  -Cf               do not compress tables; use -f representation\n"
		"  -CF               do not compress tables; use -F representation\n"
		"  -Cm, --meta-ecs   construct meta-equivalence classes\n"
		"  -Cr, --read       use read() instead of stdio for scanner input\n"
		"  -f, --full        generate fast, large scanner. Same as -Cfr\n"
		"  -F, --fast        use alternate table representation. Same as -CFr\n"
		"  -Cem              default compression (same as --ecs --meta-ecs)\n"
		"\n" "Debugging:\n"
		"  -d, --debug             enable debug mode in scanner\n"
		"  -b, --backup            write backing-up information to %s\n"
		"  -p, --perf-report       write performance report to stderr\n"
		"  -s, --nodefault         suppress default rule to ECHO unmatched text\n"
		"  -T, --trace             %s should run in trace mode\n"
		"  -w, --nowarn            do not generate warnings\n"
		"  -v, --verbose           write summary of scanner statistics to stdout\n"
		"\n" "Files:\n"
		"  -o, --outfile=FILE      specify output filename\n"
		"  -S, --skel=FILE         specify skeleton file\n"
		"  -t, --stdout            write scanner on stdout instead of %s\n"
		"      --yyclass=NAME      name of C++ class\n"
		"      --header-file=FILE   create a C header file in addition to the scanner\n"
		"      --tables-file[=FILE] write tables to FILE\n" "\n"
		"Scanner behavior:\n"
		"  -7, --7bit              generate 7-bit scanner\n"
		"  -8, --8bit              generate 8-bit scanner\n"
		"  -B, --batch             generate batch scanner (opposite of -I)\n"
		"  -i, --case-insensitive  ignore case in patterns\n"
		"  -l, --lex-compat        maximal compatibility with original lex\n"
		"  -X, --posix-compat      maximal compatibility with POSIX lex\n"
		"  -I, --interactive       generate interactive scanner (opposite of -B)\n"
		"      --yylineno          track line count in yylineno\n"
		"\n" "Generated code:\n"
		"  -+,  --c++               generate C++ scanner class\n"
		"  -Dmacro[=defn]           #define macro defn  (default defn is '1')\n"
		"  -L,  --noline            suppress #line directives in scanner\n"
		"  -P,  --prefix=STRING     use STRING as prefix instead of \"yy\"\n"
		"  -R,  --reentrant         generate a reentrant C scanner\n"
		"       --bison-bridge      scanner for bison pure parser.\n"
		"       --bison-locations   include yylloc support.\n"
		"       --stdinit           initialize yyin/yyout to stdin/stdout\n"
		"       --noansi-definitions old-style function definitions\n"
		"       --noansi-prototypes  empty parameter list in prototypes\n"
		"       --nounistd          do not include <unistd.h>\n"
		"       --noFUNCTION        do not generate a particular FUNCTION\n"
		"\n" "Miscellaneous:\n"
		"  -n                      do-nothing POSIX option\n"
		"  -?\n"
		"  -h, --help              produce this help message\n"
		"  -V, --version           report %s version\n"),
	    backing_name, program_name, outfile_path, program_name);

}

Generated by: GCOVR (Version 3.3)