Annotation of src/usr.bin/lex/main.c, Revision 1.25
1.25 ! mmcc 1: /* $OpenBSD: main.c,v 1.24 2015/11/20 04:07:43 millert Exp $ */
1.2 deraadt 2:
1.1 deraadt 3: /* flex - tool to generate fast lexical analyzers */
4:
1.16 tedu 5: /* Copyright (c) 1990 The Regents of the University of California. */
6: /* All rights reserved. */
1.1 deraadt 7:
1.16 tedu 8: /* This code is derived from software contributed to Berkeley by */
9: /* Vern Paxson. */
1.1 deraadt 10:
1.16 tedu 11: /* The United States Government has rights in this work pursuant */
12: /* to contract no. DE-AC03-76SF00098 between the United States */
13: /* Department of Energy and the University of California. */
14:
15: /* This file is part of flex. */
16:
17: /* Redistribution and use in source and binary forms, with or without */
18: /* modification, are permitted provided that the following conditions */
19: /* are met: */
20:
21: /* 1. Redistributions of source code must retain the above copyright */
22: /* notice, this list of conditions and the following disclaimer. */
23: /* 2. Redistributions in binary form must reproduce the above copyright */
24: /* notice, this list of conditions and the following disclaimer in the */
25: /* documentation and/or other materials provided with the distribution. */
26:
27: /* Neither the name of the University nor the names of its contributors */
28: /* may be used to endorse or promote products derived from this software */
29: /* without specific prior written permission. */
30:
31: /* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR */
32: /* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED */
33: /* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
34: /* PURPOSE. */
1.18 tedu 35:
36:
1.1 deraadt 37:
38: #include "flexdef.h"
39: #include "version.h"
1.16 tedu 40: #include "options.h"
41: #include "tables.h"
1.1 deraadt 42:
43: static char flex_version[] = FLEX_VERSION;
44:
45: /* declare functions that have forward references */
46:
1.18 tedu 47: void flexinit PROTO((int, char **));
48: void readin PROTO((void));
49: void set_up_initial_allocations PROTO((void));
50: static char *basename2 PROTO((char *path, int should_strip_ext));
1.1 deraadt 51:
52:
53: /* these globals are all defined and commented in flexdef.h */
1.18 tedu 54: int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt;
55: int interactive, lex_compat, posix_compat, do_yylineno, useecs, fulltbl,
56: usemecs;
57: int fullspd, gen_line_dirs, performance_report, backing_up_report;
58: int C_plus_plus, long_align, use_read, yytext_is_array, do_yywrap, csize;
59: int reentrant, bison_bridge_lval, bison_bridge_lloc;
60: int yymore_used, reject, real_reject, continued_action, in_rule;
61: int yymore_really_used, reject_really_used;
62: int datapos, dataline, linenum;
63: FILE *skelfile = NULL;
64: int skel_ind = 0;
65: char *action_array;
66: int action_size, defs1_offset, prolog_offset, action_offset, action_index;
67: char *infilename = NULL, *outfilename = NULL, *headerfilename = NULL;
68: int did_outfilename;
69: char *prefix, *yyclass, *extra_type = NULL;
70: int do_stdinit, use_stdout;
71: int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE];
72: int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp;
73: int maximum_mns, current_mns, current_max_rules;
74: int num_rules, num_eof_rules, default_rule, lastnfa;
75: int *firstst, *lastst, *finalst, *transchar, *trans1, *trans2;
76: int *accptnum, *assoc_rule, *state_type;
77: int *rule_type, *rule_linenum, *rule_useful;
78: int current_state_type;
79: int variable_trailing_context_rules;
80: int numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP];
81: int protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE];
82: int numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs, tecfwd[CSIZE + 1];
83: int tecbck[CSIZE + 1];
84: int lastsc, *scset, *scbol, *scxclu, *sceof;
85: int current_max_scs;
86: char **scname;
87: int current_max_dfa_size, current_max_xpairs;
88: int current_max_template_xpairs, current_max_dfas;
89: int lastdfa, *nxt, *chk, *tnxt;
90: int *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz;
1.1 deraadt 91: union dfaacc_union *dfaacc;
1.18 tedu 92: int *accsiz, *dhash, numas;
93: int numsnpairs, jambase, jamstate;
94: int lastccl, *cclmap, *ccllen, *cclng, cclreuse;
95: int current_maxccls, current_max_ccl_tbl_size;
1.21 mmcc 96: u_char *ccltbl;
1.18 tedu 97: char nmstr[MAXLINE];
98: int sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs;
99: int tmpuses, totnst, peakpairs, numuniq, numdup, hshsave;
100: int num_backing_up, bol_needed;
101: FILE *backing_up_file;
102: int end_of_buffer_state;
103: char **input_files;
104: int num_input_files;
1.16 tedu 105: jmp_buf flex_main_jmp_buf;
1.18 tedu 106: bool *rule_has_nl, *ccl_has_nl;
107: int nlch = '\n';
108: bool ansi_func_defs, ansi_func_protos;
1.16 tedu 109:
1.18 tedu 110: bool tablesext, tablesverify, gentables;
111: char *tablesfilename = 0, *tablesname = 0;
1.16 tedu 112: struct yytbl_writer tableswr;
1.1 deraadt 113:
114: /* Make sure program_name is initialized so we don't crash if writing
115: * out an error message before getting the program name from argv[0].
116: */
1.18 tedu 117: char *program_name = "flex";
1.1 deraadt 118:
1.16 tedu 119: static const char *outfile_template = "lex.%s.%s";
120: static const char *backing_name = "lex.backup";
121: static const char *tablesfile_template = "lex.%s.tables";
1.1 deraadt 122:
1.16 tedu 123: /* From scan.l */
1.18 tedu 124: extern FILE *yyout;
1.16 tedu 125:
1.1 deraadt 126: static char outfile_path[MAXLINE];
127: static int outfile_created = 0;
128: static char *skelname = NULL;
1.18 tedu 129: static int _stdout_closed = 0; /* flag to prevent double-fclose() on stdout. */
1.16 tedu 130: const char *escaped_qstart = "[[]]M4_YY_NOOP[M4_YY_NOOP[M4_YY_NOOP[[]]";
1.18 tedu 131: const char *escaped_qend = "[[]]M4_YY_NOOP]M4_YY_NOOP]M4_YY_NOOP[[]]";
1.16 tedu 132:
133: /* For debugging. The max number of filters to apply to skeleton. */
134: static int preproc_level = 1000;
135:
1.18 tedu 136: int flex_main PROTO((int argc, char *argv[]));
137: int main PROTO((int argc, char *argv[]));
1.16 tedu 138:
1.18 tedu 139: int
140: flex_main(argc, argv)
141: int argc;
142: char *argv[];
1.16 tedu 143: {
1.18 tedu 144: int i, exit_status, child_status;
1.16 tedu 145:
1.18 tedu 146: /*
147: * Set a longjmp target. Yes, I know it's a hack, but it gets worse:
148: * The return value of setjmp, if non-zero, is the desired exit code
149: * PLUS ONE. For example, if you want 'main' to return with code '2',
150: * then call longjmp() with an argument of 3. This is because it is
151: * invalid to specify a value of 0 to longjmp. FLEX_EXIT(n) should be
152: * used instead of exit(n);
1.16 tedu 153: */
1.18 tedu 154: exit_status = setjmp(flex_main_jmp_buf);
155: if (exit_status) {
156: if (stdout && !_stdout_closed && !ferror(stdout)) {
157: fflush(stdout);
158: fclose(stdout);
159: }
160: while (wait(&child_status) > 0) {
161: if (!WIFEXITED(child_status)
162: || WEXITSTATUS(child_status) != 0) {
163: /*
164: * report an error of a child
165: */
166: if (exit_status <= 1)
167: exit_status = 2;
1.16 tedu 168:
1.18 tedu 169: }
170: }
171: return exit_status - 1;
172: }
173: flexinit(argc, argv);
1.16 tedu 174:
1.18 tedu 175: readin();
1.16 tedu 176:
1.18 tedu 177: skelout();
1.16 tedu 178: /* %% [1.5] DFA */
1.18 tedu 179: ntod();
1.16 tedu 180:
181: for (i = 1; i <= num_rules; ++i)
182: if (!rule_useful[i] && i != default_rule)
1.18 tedu 183: line_warning(_("rule cannot be matched"),
184: rule_linenum[i]);
1.16 tedu 185:
186: if (spprdflt && !reject && rule_useful[default_rule])
1.18 tedu 187: line_warning(_
188: ("-s option given but default rule can be matched"),
189: rule_linenum[default_rule]);
1.1 deraadt 190:
191: /* Generate the C state transition tables from the DFA. */
1.18 tedu 192: make_tables();
1.1 deraadt 193:
1.18 tedu 194: /*
195: * Note, flexend does not return. It exits with its argument as
196: * status.
1.1 deraadt 197: */
1.18 tedu 198: flexend(0);
1.1 deraadt 199:
1.16 tedu 200: return 0; /* keep compilers/lint happy */
201: }
1.1 deraadt 202:
1.16 tedu 203: /* Wrapper around flex_main, so flex_main can be built as a library. */
1.18 tedu 204: int
205: main(argc, argv)
206: int argc;
207: char *argv[];
1.16 tedu 208: {
209: #if ENABLE_NLS
210: #if HAVE_LOCALE_H
1.18 tedu 211: setlocale(LC_MESSAGES, "");
212: setlocale(LC_CTYPE, "");
213: textdomain(PACKAGE);
214: bindtextdomain(PACKAGE, LOCALEDIR);
1.16 tedu 215: #endif
216: #endif
1.1 deraadt 217:
1.18 tedu 218: if (pledge("stdio rpath wpath cpath proc exec", NULL) == -1) {
219: fprintf(stderr, _("%s: pledge\n"),
220: program_name);
1.16 tedu 221: exit(1);
222: }
1.18 tedu 223: return flex_main(argc, argv);
1.16 tedu 224: }
1.1 deraadt 225:
1.16 tedu 226: /* check_options - check user-specified options */
1.1 deraadt 227:
1.18 tedu 228: void
229: check_options()
1.16 tedu 230: {
1.18 tedu 231: int i;
1.16 tedu 232:
233: if (lex_compat) {
234: if (C_plus_plus)
1.18 tedu 235: flexerror(_("Can't use -+ with -l option"));
1.16 tedu 236:
237: if (fulltbl || fullspd)
1.18 tedu 238: flexerror(_("Can't use -f or -F with -l option"));
1.16 tedu 239:
240: if (reentrant || bison_bridge_lval)
1.18 tedu 241: flexerror(_
242: ("Can't use --reentrant or --bison-bridge with -l option"));
1.1 deraadt 243:
244: yytext_is_array = true;
245: do_yylineno = true;
246: use_read = false;
1.16 tedu 247: }
248: #if 0
249: /* This makes no sense whatsoever. I'm removing it. */
250: if (do_yylineno)
1.1 deraadt 251: /* This should really be "maintain_backup_tables = true" */
252: reject_really_used = true;
1.16 tedu 253: #endif
1.1 deraadt 254:
1.16 tedu 255: if (csize == unspecified) {
256: if ((fulltbl || fullspd) && !useecs)
1.1 deraadt 257: csize = DEFAULT_CSIZE;
258: else
259: csize = CSIZE;
1.16 tedu 260: }
261: if (interactive == unspecified) {
262: if (fulltbl || fullspd)
1.1 deraadt 263: interactive = false;
264: else
265: interactive = true;
1.16 tedu 266: }
267: if (fulltbl || fullspd) {
268: if (usemecs)
1.18 tedu 269: flexerror(_
270: ("-Cf/-CF and -Cm don't make sense together"));
1.16 tedu 271:
272: if (interactive)
1.18 tedu 273: flexerror(_("-Cf/-CF and -I are incompatible"));
1.16 tedu 274:
275: if (lex_compat)
1.18 tedu 276: flexerror(_
277: ("-Cf/-CF are incompatible with lex-compatibility mode"));
1.16 tedu 278:
279:
280: if (fulltbl && fullspd)
1.18 tedu 281: flexerror(_
282: ("-Cf and -CF are mutually exclusive"));
1.16 tedu 283: }
284: if (C_plus_plus && fullspd)
1.18 tedu 285: flexerror(_("Can't use -+ with -CF option"));
1.1 deraadt 286:
1.16 tedu 287: if (C_plus_plus && yytext_is_array) {
1.18 tedu 288: warn(_("%array incompatible with -+ option"));
1.16 tedu 289: yytext_is_array = false;
290: }
291: if (C_plus_plus && (reentrant))
1.18 tedu 292: flexerror(_("Options -+ and --reentrant are mutually exclusive."));
1.1 deraadt 293:
1.16 tedu 294: if (C_plus_plus && bison_bridge_lval)
1.18 tedu 295: flexerror(_("bison bridge not supported for the C++ scanner."));
1.1 deraadt 296:
297:
1.16 tedu 298: if (useecs) { /* Set up doubly-linked equivalence classes. */
1.1 deraadt 299:
1.18 tedu 300: /*
301: * We loop all the way up to csize, since ecgroup[csize] is
1.1 deraadt 302: * the position used for NUL characters.
303: */
304: ecgroup[1] = NIL;
305:
1.16 tedu 306: for (i = 2; i <= csize; ++i) {
1.1 deraadt 307: ecgroup[i] = i - 1;
308: nextecm[i - 1] = i;
1.16 tedu 309: }
1.1 deraadt 310:
311: nextecm[csize] = NIL;
1.18 tedu 312: } else {
1.1 deraadt 313: /* Put everything in its own equivalence class. */
1.16 tedu 314: for (i = 1; i <= csize; ++i) {
1.1 deraadt 315: ecgroup[i] = i;
316: nextecm[i] = BAD_SUBSCRIPT; /* to catch errors */
317: }
1.16 tedu 318: }
319:
1.18 tedu 320: if (!ansi_func_defs)
321: buf_m4_define(&m4defs_buf, "M4_YY_NO_ANSI_FUNC_DEFS", NULL);
1.16 tedu 322:
1.18 tedu 323: if (!ansi_func_protos)
324: buf_m4_define(&m4defs_buf, "M4_YY_NO_ANSI_FUNC_PROTOS", NULL);
1.16 tedu 325:
1.18 tedu 326: if (extra_type)
327: buf_m4_define(&m4defs_buf, "M4_EXTRA_TYPE_DEFS", extra_type);
1.1 deraadt 328:
1.16 tedu 329: if (!use_stdout) {
1.18 tedu 330: FILE *prev_stdout;
1.1 deraadt 331:
1.16 tedu 332: if (!did_outfilename) {
1.18 tedu 333: char *suffix;
1.1 deraadt 334:
1.16 tedu 335: if (C_plus_plus)
1.1 deraadt 336: suffix = "cc";
337: else
338: suffix = "c";
339:
1.18 tedu 340: snprintf(outfile_path, sizeof(outfile_path), outfile_template,
341: prefix, suffix);
1.1 deraadt 342:
343: outfilename = outfile_path;
1.16 tedu 344: }
1.18 tedu 345: prev_stdout = freopen(outfilename, "w+", stdout);
1.1 deraadt 346:
1.16 tedu 347: if (prev_stdout == NULL)
1.18 tedu 348: lerrsf(_("could not create %s"), outfilename);
1.1 deraadt 349:
350: outfile_created = 1;
1.16 tedu 351: }
1.18 tedu 352: /* Setup the filter chain. */
353: output_chain = filter_create_int(NULL, filter_tee_header, headerfilename);
1.24 millert 354: filter_create_ext(output_chain, M4, "-P", 0);
1.18 tedu 355: filter_create_int(output_chain, filter_fix_linedirs, NULL);
356:
357: /* For debugging, only run the requested number of filters. */
358: if (preproc_level > 0) {
359: filter_truncate(output_chain, preproc_level);
360: filter_apply_chain(output_chain);
361: }
362: yyout = stdout;
1.16 tedu 363:
364:
365: /* always generate the tablesverify flag. */
1.18 tedu 366: buf_m4_define(&m4defs_buf, "M4_YY_TABLES_VERIFY", tablesverify ? "1" : "0");
1.16 tedu 367: if (tablesext)
368: gentables = false;
369:
370: if (tablesverify)
371: /* force generation of C tables. */
372: gentables = true;
373:
374:
375: if (tablesext) {
1.18 tedu 376: FILE *tablesout;
1.16 tedu 377: struct yytbl_hdr hdr;
1.18 tedu 378: char *pname = 0;
379: int nbytes = 0;
1.16 tedu 380:
1.18 tedu 381: buf_m4_define(&m4defs_buf, "M4_YY_TABLES_EXTERNAL", NULL);
1.16 tedu 382:
383: if (!tablesfilename) {
1.18 tedu 384: nbytes = strlen(prefix) + strlen(tablesfile_template) + 2;
385: tablesfilename = pname = (char *) calloc(nbytes, 1);
386: snprintf(pname, nbytes, tablesfile_template, prefix);
1.16 tedu 387: }
1.18 tedu 388: if ((tablesout = fopen(tablesfilename, "w")) == NULL)
389: lerrsf(_("could not create %s"), tablesfilename);
1.25 ! mmcc 390: free(pname);
1.16 tedu 391: tablesfilename = 0;
392:
1.18 tedu 393: yytbl_writer_init(&tableswr, tablesout);
1.16 tedu 394:
1.18 tedu 395: nbytes = strlen(prefix) + strlen("tables") + 2;
396: tablesname = (char *) calloc(nbytes, 1);
397: snprintf(tablesname, nbytes, "%stables", prefix);
398: yytbl_hdr_init(&hdr, flex_version, tablesname);
1.1 deraadt 399:
1.18 tedu 400: if (yytbl_hdr_fwrite(&tableswr, &hdr) <= 0)
401: flexerror(_("could not write tables header"));
1.16 tedu 402: }
1.18 tedu 403: if (skelname && (skelfile = fopen(skelname, "r")) == NULL)
404: lerrsf(_("can't open skeleton file %s"), skelname);
1.1 deraadt 405:
1.16 tedu 406: if (reentrant) {
1.18 tedu 407: buf_m4_define(&m4defs_buf, "M4_YY_REENTRANT", NULL);
1.16 tedu 408: if (yytext_is_array)
1.18 tedu 409: buf_m4_define(&m4defs_buf, "M4_YY_TEXT_IS_ARRAY", NULL);
1.16 tedu 410: }
1.18 tedu 411: if (bison_bridge_lval)
412: buf_m4_define(&m4defs_buf, "M4_YY_BISON_LVAL", NULL);
1.1 deraadt 413:
1.18 tedu 414: if (bison_bridge_lloc)
415: buf_m4_define(&m4defs_buf, "<M4_YY_BISON_LLOC>", NULL);
1.1 deraadt 416:
1.17 tedu 417: buf_m4_define(&m4defs_buf, "M4_YY_PREFIX", prefix);
1.1 deraadt 418:
1.16 tedu 419: if (did_outfilename)
1.18 tedu 420: line_directive_out(stdout, 0);
1.16 tedu 421:
422: if (do_yylineno)
1.18 tedu 423: buf_m4_define(&m4defs_buf, "M4_YY_USE_LINENO", NULL);
1.16 tedu 424:
425: /* Create the alignment type. */
1.18 tedu 426: buf_strdefine(&userdef_buf, "YY_INT_ALIGNED",
427: long_align ? "long int" : "short int");
428:
429: /* Define the start condition macros. */
430: {
431: struct Buf tmpbuf;
432: buf_init(&tmpbuf, sizeof(char));
433: for (i = 1; i <= lastsc; i++) {
434: char *str, *fmt = "#define %s %d\n";
435: size_t strsz;
436:
1.20 tedu 437: str = (char *) malloc(strsz = strlen(fmt) + strlen(scname[i]) + (int) (1 + log10(i)) + 2);
1.18 tedu 438: if (!str)
439: flexfatal(_("allocation of macro definition failed"));
440: snprintf(str, strsz, fmt, scname[i], i - 1);
441: buf_strappend(&tmpbuf, str);
442: free(str);
443: }
444: buf_m4_define(&m4defs_buf, "M4_YY_SC_DEFS", tmpbuf.elts);
445: buf_destroy(&tmpbuf);
446: }
447:
448: /* This is where we begin writing to the file. */
1.16 tedu 449:
1.18 tedu 450: /* Dump the %top code. */
451: if (top_buf.elts)
452: outn((char *) top_buf.elts);
1.16 tedu 453:
1.18 tedu 454: /* Dump the m4 definitions. */
455: buf_print_strings(&m4defs_buf, stdout);
456: m4defs_buf.nelts = 0; /* memory leak here. */
457:
458: /* Place a bogus line directive, it will be fixed in the filter. */
459: outn("#line 0 \"M4_YY_OUTFILE_NAME\"\n");
1.16 tedu 460:
461: /* Dump the user defined preproc directives. */
462: if (userdef_buf.elts)
1.18 tedu 463: outn((char *) (userdef_buf.elts));
1.16 tedu 464:
1.18 tedu 465: skelout();
1.16 tedu 466: /* %% [1.0] */
467: }
1.1 deraadt 468:
469: /* flexend - terminate flex
470: *
471: * note
472: * This routine does not return.
473: */
474:
1.18 tedu 475: void
476: flexend(exit_status)
477: int exit_status;
1.16 tedu 478:
479: {
480: static int called_before = -1; /* prevent infinite recursion. */
1.18 tedu 481: int tblsiz;
1.16 tedu 482:
483: if (++called_before)
1.18 tedu 484: FLEX_EXIT(exit_status);
1.16 tedu 485:
486: if (skelfile != NULL) {
1.18 tedu 487: if (ferror(skelfile))
488: lerrsf(_("input error reading skeleton file %s"),
489: skelname);
490:
491: else if (fclose(skelfile))
492: lerrsf(_("error closing skeleton file %s"),
493: skelname);
1.16 tedu 494: }
1.18 tedu 495: #if 0
496: fprintf(header_out,
497: "#ifdef YY_HEADER_EXPORT_START_CONDITIONS\n");
498: fprintf(header_out,
499: "/* Beware! Start conditions are not prefixed. */\n");
500:
501: /* Special case for "INITIAL" */
502: fprintf(header_out,
503: "#undef INITIAL\n#define INITIAL 0\n");
504: for (i = 2; i <= lastsc; i++)
505: fprintf(header_out, "#define %s %d\n", scname[i], i - 1);
506: fprintf(header_out,
507: "#endif /* YY_HEADER_EXPORT_START_CONDITIONS */\n\n");
508:
509: /*
510: * Kill ALL flex-related macros. This is so the user can #include
511: * more than one generated header file.
512: */
513: fprintf(header_out, "#ifndef YY_HEADER_NO_UNDEFS\n");
514: fprintf(header_out,
515: "/* Undefine all internal macros, etc., that do no belong in the header. */\n\n");
1.1 deraadt 516:
1.18 tedu 517: {
518: const char *undef_list[] = {
1.16 tedu 519:
1.18 tedu 520: "BEGIN",
521: "ECHO",
522: "EOB_ACT_CONTINUE_SCAN",
523: "EOB_ACT_END_OF_FILE",
524: "EOB_ACT_LAST_MATCH",
525: "FLEX_SCANNER",
526: "FLEX_STD",
527: "REJECT",
528: "YYFARGS0",
529: "YYFARGS1",
530: "YYFARGS2",
531: "YYFARGS3",
532: "YYLMAX",
533: "YYSTATE",
534: "YY_AT_BOL",
535: "YY_BREAK",
536: "YY_BUFFER_EOF_PENDING",
537: "YY_BUFFER_NEW",
538: "YY_BUFFER_NORMAL",
539: "YY_BUF_SIZE",
540: "M4_YY_CALL_LAST_ARG",
541: "M4_YY_CALL_ONLY_ARG",
542: "YY_CURRENT_BUFFER",
543: "YY_DECL",
544: "M4_YY_DECL_LAST_ARG",
545: "M4_YY_DEF_LAST_ARG",
546: "M4_YY_DEF_ONLY_ARG",
547: "YY_DO_BEFORE_ACTION",
548: "YY_END_OF_BUFFER",
549: "YY_END_OF_BUFFER_CHAR",
550: "YY_EXIT_FAILURE",
551: "YY_EXTRA_TYPE",
552: "YY_FATAL_ERROR",
553: "YY_FLEX_DEFINED_ECHO",
554: "YY_FLEX_LEX_COMPAT",
555: "YY_FLEX_MAJOR_VERSION",
556: "YY_FLEX_MINOR_VERSION",
557: "YY_FLEX_SUBMINOR_VERSION",
558: "YY_FLUSH_BUFFER",
559: "YY_G",
560: "YY_INPUT",
561: "YY_INTERACTIVE",
562: "YY_INT_ALIGNED",
563: "YY_LAST_ARG",
564: "YY_LESS_LINENO",
565: "YY_LEX_ARGS",
566: "YY_LEX_DECLARATION",
567: "YY_LEX_PROTO",
568: "YY_MAIN",
569: "YY_MORE_ADJ",
570: "YY_NEED_STRLEN",
571: "YY_NEW_FILE",
572: "YY_NULL",
573: "YY_NUM_RULES",
574: "YY_ONLY_ARG",
575: "YY_PARAMS",
576: "YY_PROTO",
577: "M4_YY_PROTO_LAST_ARG",
578: "M4_YY_PROTO_ONLY_ARG void",
579: "YY_READ_BUF_SIZE",
580: "YY_REENTRANT",
581: "YY_RESTORE_YY_MORE_OFFSET",
582: "YY_RULE_SETUP",
583: "YY_SC_TO_UI",
584: "YY_SKIP_YYWRAP",
585: "YY_START",
586: "YY_START_STACK_INCR",
587: "YY_STATE_EOF",
588: "YY_STDINIT",
589: "YY_TRAILING_HEAD_MASK",
590: "YY_TRAILING_MASK",
591: "YY_USER_ACTION",
592: "YY_USE_CONST",
593: "YY_USE_PROTOS",
594: "unput",
595: "yyTABLES_NAME",
596: "yy_create_buffer",
597: "yy_delete_buffer",
598: "yy_flex_debug",
599: "yy_flush_buffer",
600: "yy_init_buffer",
601: "yy_load_buffer_state",
602: "yy_new_buffer",
603: "yy_scan_buffer",
604: "yy_scan_bytes",
605: "yy_scan_string",
606: "yy_set_bol",
607: "yy_set_interactive",
608: "yy_switch_to_buffer",
609: "yypush_buffer_state",
610: "yypop_buffer_state",
611: "yyensure_buffer_stack",
612: "yyalloc",
613: "yyconst",
614: "yyextra",
615: "yyfree",
616: "yyget_debug",
617: "yyget_extra",
618: "yyget_in",
619: "yyget_leng",
620: "yyget_lineno",
621: "yyget_lloc",
622: "yyget_lval",
623: "yyget_out",
624: "yyget_text",
625: "yyin",
626: "yyleng",
627: "yyless",
628: "yylex",
629: "yylex_destroy",
630: "yylex_init",
631: "yylex_init_extra",
632: "yylineno",
633: "yylloc",
634: "yylval",
635: "yymore",
636: "yyout",
637: "yyrealloc",
638: "yyrestart",
639: "yyset_debug",
640: "yyset_extra",
641: "yyset_in",
642: "yyset_lineno",
643: "yyset_lloc",
644: "yyset_lval",
645: "yyset_out",
646: "yytables_destroy",
647: "yytables_fload",
648: "yyterminate",
649: "yytext",
650: "yytext_ptr",
651: "yywrap",
652:
653: /* must be null-terminated */
654: NULL};
655:
656:
657: for (i = 0; undef_list[i] != NULL; i++)
658: fprintf(header_out, "#undef %s\n", undef_list[i]);
659: }
660:
661: /* undef any of the auto-generated symbols. */
662: for (i = 0; i < defs_buf.nelts; i++) {
663:
664: /* don't undef start conditions */
665: if (sclookup(((char **) defs_buf.elts)[i]) > 0)
666: continue;
667: fprintf(header_out, "#undef %s\n",
668: ((char **) defs_buf.elts)[i]);
669: }
670:
671: fprintf(header_out,
672: "#endif /* !YY_HEADER_NO_UNDEFS */\n");
673: fprintf(header_out, "\n");
674: fprintf(header_out, "#undef %sIN_HEADER\n", prefix);
675: fprintf(header_out, "#endif /* %sHEADER_H */\n", prefix);
676:
677: if (ferror(header_out))
678: lerrsf(_("error creating header file %s"),
679: headerfilename);
680: fflush(header_out);
681: fclose(header_out);
1.16 tedu 682: #endif
1.1 deraadt 683:
1.16 tedu 684: if (exit_status != 0 && outfile_created) {
1.18 tedu 685: if (ferror(stdout))
686: lerrsf(_("error writing output file %s"),
687: outfilename);
688:
689: else if ((_stdout_closed = 1) && fclose(stdout))
690: lerrsf(_("error closing output file %s"),
691: outfilename);
692:
693: else if (unlink(outfilename))
694: lerrsf(_("error deleting output file %s"),
695: outfilename);
1.16 tedu 696: }
697: if (backing_up_report && backing_up_file) {
698: if (num_backing_up == 0)
1.18 tedu 699: fprintf(backing_up_file, _("No backing up.\n"));
1.16 tedu 700: else if (fullspd || fulltbl)
1.18 tedu 701: fprintf(backing_up_file,
702: _
703: ("%d backing up (non-accepting) states.\n"),
704: num_backing_up);
1.1 deraadt 705: else
1.18 tedu 706: fprintf(backing_up_file,
707: _("Compressed tables always back up.\n"));
1.1 deraadt 708:
1.18 tedu 709: if (ferror(backing_up_file))
710: lerrsf(_("error writing backup file %s"),
711: backing_name);
712:
713: else if (fclose(backing_up_file))
714: lerrsf(_("error closing backup file %s"),
715: backing_name);
1.16 tedu 716: }
717: if (printstats) {
1.18 tedu 718: fprintf(stderr, _("%s version %s usage statistics:\n"),
719: program_name, flex_version);
1.16 tedu 720:
1.18 tedu 721: fprintf(stderr, _(" scanner options: -"));
1.16 tedu 722:
723: if (C_plus_plus)
1.18 tedu 724: putc('+', stderr);
1.16 tedu 725: if (backing_up_report)
1.18 tedu 726: putc('b', stderr);
1.16 tedu 727: if (ddebug)
1.18 tedu 728: putc('d', stderr);
1.16 tedu 729: if (sf_case_ins())
1.18 tedu 730: putc('i', stderr);
1.16 tedu 731: if (lex_compat)
1.18 tedu 732: putc('l', stderr);
1.16 tedu 733: if (posix_compat)
1.18 tedu 734: putc('X', stderr);
1.16 tedu 735: if (performance_report > 0)
1.18 tedu 736: putc('p', stderr);
1.16 tedu 737: if (performance_report > 1)
1.18 tedu 738: putc('p', stderr);
1.16 tedu 739: if (spprdflt)
1.18 tedu 740: putc('s', stderr);
1.16 tedu 741: if (reentrant)
1.18 tedu 742: fputs("--reentrant", stderr);
1.17 tedu 743: if (bison_bridge_lval)
1.18 tedu 744: fputs("--bison-bridge", stderr);
1.17 tedu 745: if (bison_bridge_lloc)
1.18 tedu 746: fputs("--bison-locations", stderr);
1.16 tedu 747: if (use_stdout)
1.18 tedu 748: putc('t', stderr);
1.16 tedu 749: if (printstats)
1.18 tedu 750: putc('v', stderr); /* always true! */
1.16 tedu 751: if (nowarn)
1.18 tedu 752: putc('w', stderr);
1.16 tedu 753: if (interactive == false)
1.18 tedu 754: putc('B', stderr);
1.16 tedu 755: if (interactive == true)
1.18 tedu 756: putc('I', stderr);
1.16 tedu 757: if (!gen_line_dirs)
1.18 tedu 758: putc('L', stderr);
1.16 tedu 759: if (trace)
1.18 tedu 760: putc('T', stderr);
1.1 deraadt 761:
1.16 tedu 762: if (csize == unspecified)
1.18 tedu 763: /*
764: * We encountered an error fairly early on, so csize
1.1 deraadt 765: * never got specified. Define it now, to prevent
766: * bogus table sizes being written out below.
767: */
768: csize = 256;
769:
1.16 tedu 770: if (csize == 128)
1.18 tedu 771: putc('7', stderr);
1.1 deraadt 772: else
1.18 tedu 773: putc('8', stderr);
1.1 deraadt 774:
1.18 tedu 775: fprintf(stderr, " -C");
1.1 deraadt 776:
1.16 tedu 777: if (long_align)
1.18 tedu 778: putc('a', stderr);
1.16 tedu 779: if (fulltbl)
1.18 tedu 780: putc('f', stderr);
1.16 tedu 781: if (fullspd)
1.18 tedu 782: putc('F', stderr);
1.16 tedu 783: if (useecs)
1.18 tedu 784: putc('e', stderr);
1.16 tedu 785: if (usemecs)
1.18 tedu 786: putc('m', stderr);
1.16 tedu 787: if (use_read)
1.18 tedu 788: putc('r', stderr);
1.16 tedu 789:
790: if (did_outfilename)
1.18 tedu 791: fprintf(stderr, " -o%s", outfilename);
1.16 tedu 792:
793: if (skelname)
1.18 tedu 794: fprintf(stderr, " -S%s", skelname);
1.16 tedu 795:
1.18 tedu 796: if (strcmp(prefix, "yy"))
797: fprintf(stderr, " -P%s", prefix);
1.16 tedu 798:
1.18 tedu 799: putc('\n', stderr);
1.16 tedu 800:
1.18 tedu 801: fprintf(stderr, _(" %d/%d NFA states\n"),
802: lastnfa, current_mns);
803: fprintf(stderr, _(" %d/%d DFA states (%d words)\n"),
804: lastdfa, current_max_dfas, totnst);
805: fprintf(stderr, _(" %d rules\n"),
806: num_rules + num_eof_rules -
807: 1 /* - 1 for def. rule */ );
1.16 tedu 808:
809: if (num_backing_up == 0)
1.18 tedu 810: fprintf(stderr, _(" No backing up\n"));
1.16 tedu 811: else if (fullspd || fulltbl)
1.18 tedu 812: fprintf(stderr,
813: _
814: (" %d backing-up (non-accepting) states\n"),
815: num_backing_up);
1.1 deraadt 816: else
1.18 tedu 817: fprintf(stderr,
818: _
819: (" Compressed tables always back-up\n"));
1.16 tedu 820:
821: if (bol_needed)
1.18 tedu 822: fprintf(stderr,
823: _(" Beginning-of-line patterns used\n"));
1.16 tedu 824:
1.18 tedu 825: fprintf(stderr, _(" %d/%d start conditions\n"), lastsc,
826: current_max_scs);
827: fprintf(stderr,
828: _
829: (" %d epsilon states, %d double epsilon states\n"),
830: numeps, eps2);
1.1 deraadt 831:
1.16 tedu 832: if (lastccl == 0)
1.18 tedu 833: fprintf(stderr, _(" no character classes\n"));
1.1 deraadt 834: else
1.18 tedu 835: fprintf(stderr,
836: _
837: (" %d/%d character classes needed %d/%d words of storage, %d reused\n"),
838: lastccl, current_maxccls,
839: cclmap[lastccl] + ccllen[lastccl],
840: current_max_ccl_tbl_size, cclreuse);
841:
842: fprintf(stderr, _(" %d state/nextstate pairs created\n"),
843: numsnpairs);
844: fprintf(stderr,
845: _(" %d/%d unique/duplicate transitions\n"),
846: numuniq, numdup);
1.1 deraadt 847:
1.16 tedu 848: if (fulltbl) {
1.1 deraadt 849: tblsiz = lastdfa * numecs;
1.18 tedu 850: fprintf(stderr, _(" %d table entries\n"),
851: tblsiz);
852: } else {
1.1 deraadt 853: tblsiz = 2 * (lastdfa + numtemps) + 2 * tblend;
854:
1.18 tedu 855: fprintf(stderr,
856: _(" %d/%d base-def entries created\n"),
857: lastdfa + numtemps, current_max_dfas);
858: fprintf(stderr,
859: _
860: (" %d/%d (peak %d) nxt-chk entries created\n"),
861: tblend, current_max_xpairs, peakpairs);
862: fprintf(stderr,
863: _
864: (" %d/%d (peak %d) template nxt-chk entries created\n"),
865: numtemps * nummecs,
866: current_max_template_xpairs,
867: numtemps * numecs);
868: fprintf(stderr, _(" %d empty table entries\n"),
869: nummt);
870: fprintf(stderr, _(" %d protos created\n"),
871: numprots);
872: fprintf(stderr,
873: _(" %d templates created, %d uses\n"),
874: numtemps, tmpuses);
1.16 tedu 875: }
1.1 deraadt 876:
1.16 tedu 877: if (useecs) {
1.1 deraadt 878: tblsiz = tblsiz + csize;
1.18 tedu 879: fprintf(stderr,
880: _
881: (" %d/%d equivalence classes created\n"),
882: numecs, csize);
1.16 tedu 883: }
884: if (usemecs) {
1.1 deraadt 885: tblsiz = tblsiz + numecs;
1.18 tedu 886: fprintf(stderr,
887: _
888: (" %d/%d meta-equivalence classes created\n"),
889: nummecs, csize);
1.1 deraadt 890: }
1.18 tedu 891: fprintf(stderr,
892: _
893: (" %d (%d saved) hash collisions, %d DFAs equal\n"),
894: hshcol, hshsave, dfaeql);
895: fprintf(stderr, _(" %d sets of reallocations needed\n"),
896: num_reallocs);
897: fprintf(stderr, _(" %d total table entries needed\n"),
898: tblsiz);
1.1 deraadt 899: }
1.18 tedu 900: FLEX_EXIT(exit_status);
1.16 tedu 901: }
902:
1.1 deraadt 903:
904: /* flexinit - initialize flex */
905:
1.18 tedu 906: void
907: flexinit(argc, argv)
908: int argc;
909: char **argv;
1.16 tedu 910: {
1.18 tedu 911: int i, sawcmpflag, rv, optind;
912: char *arg;
1.16 tedu 913: scanopt_t sopt;
914:
915: printstats = syntaxerror = trace = spprdflt = false;
916: lex_compat = posix_compat = C_plus_plus = backing_up_report =
1.18 tedu 917: ddebug = fulltbl = false;
1.16 tedu 918: fullspd = long_align = nowarn = yymore_used = continued_action =
1.18 tedu 919: false;
1.16 tedu 920: do_yylineno = yytext_is_array = in_rule = reject = do_stdinit =
1.18 tedu 921: false;
1.1 deraadt 922: yymore_really_used = reject_really_used = unspecified;
923: interactive = csize = unspecified;
924: do_yywrap = gen_line_dirs = usemecs = useecs = true;
1.16 tedu 925: reentrant = bison_bridge_lval = bison_bridge_lloc = false;
1.1 deraadt 926: performance_report = 0;
927: did_outfilename = 0;
928: prefix = "yy";
929: yyclass = 0;
930: use_read = use_stdout = false;
1.16 tedu 931: tablesext = tablesverify = false;
932: gentables = true;
933: tablesfilename = tablesname = NULL;
1.18 tedu 934: ansi_func_defs = ansi_func_protos = true;
1.1 deraadt 935:
936: sawcmpflag = false;
937:
938: /* Initialize dynamic array for holding the rule actions. */
939: action_size = 2048; /* default size of action array in bytes */
1.18 tedu 940: action_array = allocate_character_array(action_size);
1.1 deraadt 941: defs1_offset = prolog_offset = action_offset = action_index = 0;
942: action_array[0] = '\0';
943:
1.16 tedu 944: /* Initialize any buffers. */
1.18 tedu 945: buf_init(&userdef_buf, sizeof(char)); /* one long string */
946: buf_init(&defs_buf, sizeof(char *)); /* list of strings */
947: buf_init(&yydmap_buf, sizeof(char)); /* one long string */
948: buf_init(&top_buf, sizeof(char)); /* one long string */
1.16 tedu 949:
1.18 tedu 950: {
951: const char *m4defs_init_str[] = {"m4_changequote\n",
952: "m4_changequote([[, ]])\n"};
953: buf_init(&m4defs_buf, sizeof(char *));
954: buf_append(&m4defs_buf, &m4defs_init_str, 2);
955: }
956:
957: sf_init();
1.16 tedu 958:
1.18 tedu 959: /* initialize regex lib */
960: flex_init_regex();
1.16 tedu 961:
962: /* Enable C++ if program name ends with '+'. */
1.18 tedu 963: program_name = basename2(argv[0], 0);
1.1 deraadt 964:
1.16 tedu 965: if (program_name[0] != '\0' &&
1.18 tedu 966: program_name[strlen(program_name) - 1] == '+')
1.1 deraadt 967: C_plus_plus = true;
968:
969: /* read flags */
1.18 tedu 970: sopt = scanopt_init(flexopts, argc, argv, 0);
1.16 tedu 971: if (!sopt) {
972: /* This will only happen when flexopts array is altered. */
1.18 tedu 973: fprintf(stderr,
974: _("Internal error. flexopts are malformed.\n"));
975: FLEX_EXIT(1);
1.16 tedu 976: }
1.18 tedu 977: while ((rv = scanopt(sopt, &arg, &optind)) != 0) {
1.1 deraadt 978:
1.16 tedu 979: if (rv < 0) {
1.18 tedu 980: /*
981: * Scanopt has already printed an option-specific
982: * error message.
983: */
984: fprintf(stderr,
985: _
986: ("Try `%s --help' for more information.\n"),
987: program_name);
988: FLEX_EXIT(1);
1.16 tedu 989: }
990: switch ((enum flexopt_flag_t) rv) {
991: case OPT_CPLUSPLUS:
992: C_plus_plus = true;
993: break;
1.1 deraadt 994:
1.16 tedu 995: case OPT_BATCH:
996: interactive = false;
997: break;
1.1 deraadt 998:
1.16 tedu 999: case OPT_BACKUP:
1000: backing_up_report = true;
1001: break;
1.1 deraadt 1002:
1.16 tedu 1003: case OPT_DONOTHING:
1004: break;
1.1 deraadt 1005:
1.16 tedu 1006: case OPT_COMPRESSION:
1007: if (!sawcmpflag) {
1008: useecs = false;
1009: usemecs = false;
1010: fulltbl = false;
1011: sawcmpflag = true;
1012: }
1013: for (i = 0; arg && arg[i] != '\0'; i++)
1014: switch (arg[i]) {
1015: case 'a':
1016: long_align = true;
1.1 deraadt 1017: break;
1018:
1.16 tedu 1019: case 'e':
1020: useecs = true;
1.1 deraadt 1021: break;
1022:
1023: case 'F':
1.16 tedu 1024: fullspd = true;
1.1 deraadt 1025: break;
1026:
1.16 tedu 1027: case 'f':
1028: fulltbl = true;
1029: break;
1.1 deraadt 1030:
1.16 tedu 1031: case 'm':
1032: usemecs = true;
1.1 deraadt 1033: break;
1034:
1.16 tedu 1035: case 'r':
1036: use_read = true;
1.1 deraadt 1037: break;
1038:
1.16 tedu 1039: default:
1.18 tedu 1040: lerrif(_
1041: ("unknown -C option '%c'"),
1042: (int) arg[i]);
1.1 deraadt 1043: break;
1.16 tedu 1044: }
1045: break;
1.1 deraadt 1046:
1.16 tedu 1047: case OPT_DEBUG:
1048: ddebug = true;
1049: break;
1050:
1051: case OPT_NO_DEBUG:
1052: ddebug = false;
1053: break;
1054:
1055: case OPT_FULL:
1056: useecs = usemecs = false;
1057: use_read = fulltbl = true;
1058: break;
1059:
1060: case OPT_FAST:
1061: useecs = usemecs = false;
1062: use_read = fullspd = true;
1063: break;
1064:
1065: case OPT_HELP:
1.18 tedu 1066: usage();
1067: FLEX_EXIT(0);
1.16 tedu 1068:
1069: case OPT_INTERACTIVE:
1070: interactive = true;
1071: break;
1072:
1073: case OPT_CASE_INSENSITIVE:
1074: sf_set_case_ins(true);
1075: break;
1076:
1077: case OPT_LEX_COMPAT:
1078: lex_compat = true;
1079: break;
1080:
1081: case OPT_POSIX_COMPAT:
1082: posix_compat = true;
1083: break;
1084:
1.18 tedu 1085: case OPT_PREPROC_LEVEL:
1086: preproc_level = strtol(arg, NULL, 0);
1087: break;
1.16 tedu 1088:
1089: case OPT_MAIN:
1.18 tedu 1090: buf_strdefine(&userdef_buf, "YY_MAIN", "1");
1.16 tedu 1091: do_yywrap = false;
1092: break;
1093:
1094: case OPT_NO_MAIN:
1.18 tedu 1095: buf_strdefine(&userdef_buf, "YY_MAIN", "0");
1.16 tedu 1096: break;
1097:
1098: case OPT_NO_LINE:
1099: gen_line_dirs = false;
1100: break;
1101:
1102: case OPT_OUTFILE:
1103: outfilename = arg;
1104: did_outfilename = 1;
1105: break;
1106:
1107: case OPT_PREFIX:
1108: prefix = arg;
1109: break;
1110:
1111: case OPT_PERF_REPORT:
1112: ++performance_report;
1113: break;
1114:
1115: case OPT_BISON_BRIDGE:
1116: bison_bridge_lval = true;
1117: break;
1118:
1119: case OPT_BISON_BRIDGE_LOCATIONS:
1120: bison_bridge_lval = bison_bridge_lloc = true;
1121: break;
1122:
1123: case OPT_REENTRANT:
1124: reentrant = true;
1125: break;
1126:
1127: case OPT_NO_REENTRANT:
1128: reentrant = false;
1129: break;
1130:
1131: case OPT_SKEL:
1132: skelname = arg;
1133: break;
1134:
1135: case OPT_DEFAULT:
1136: spprdflt = false;
1137: break;
1138:
1139: case OPT_NO_DEFAULT:
1140: spprdflt = true;
1141: break;
1142:
1143: case OPT_STDOUT:
1144: use_stdout = true;
1145: break;
1146:
1147: case OPT_NO_UNISTD_H:
1.18 tedu 1148: //buf_strdefine(&userdef_buf, "YY_NO_UNISTD_H", "1");
1149: buf_m4_define(&m4defs_buf, "M4_YY_NO_UNISTD_H", 0);
1.16 tedu 1150: break;
1151:
1152: case OPT_TABLES_FILE:
1153: tablesext = true;
1154: tablesfilename = arg;
1155: break;
1156:
1157: case OPT_TABLES_VERIFY:
1158: tablesverify = true;
1159: break;
1160:
1161: case OPT_TRACE:
1162: trace = true;
1163: break;
1164:
1165: case OPT_VERBOSE:
1166: printstats = true;
1167: break;
1168:
1169: case OPT_VERSION:
1.18 tedu 1170: printf(_("%s %s\n"), program_name, flex_version);
1171: FLEX_EXIT(0);
1.16 tedu 1172:
1173: case OPT_WARN:
1174: nowarn = false;
1175: break;
1176:
1177: case OPT_NO_WARN:
1178: nowarn = true;
1179: break;
1180:
1181: case OPT_7BIT:
1182: csize = 128;
1183: break;
1.1 deraadt 1184:
1.16 tedu 1185: case OPT_8BIT:
1186: csize = CSIZE;
1187: break;
1.1 deraadt 1188:
1.16 tedu 1189: case OPT_ALIGN:
1190: long_align = true;
1191: break;
1.1 deraadt 1192:
1.16 tedu 1193: case OPT_NO_ALIGN:
1194: long_align = false;
1195: break;
1.1 deraadt 1196:
1.16 tedu 1197: case OPT_ALWAYS_INTERACTIVE:
1.18 tedu 1198: buf_m4_define(&m4defs_buf, "M4_YY_ALWAYS_INTERACTIVE", 0);
1.16 tedu 1199: break;
1.1 deraadt 1200:
1.16 tedu 1201: case OPT_NEVER_INTERACTIVE:
1.18 tedu 1202: buf_m4_define(&m4defs_buf, "M4_YY_NEVER_INTERACTIVE", 0);
1.16 tedu 1203: break;
1.1 deraadt 1204:
1.16 tedu 1205: case OPT_ARRAY:
1206: yytext_is_array = true;
1207: break;
1.1 deraadt 1208:
1.16 tedu 1209: case OPT_POINTER:
1210: yytext_is_array = false;
1211: break;
1.1 deraadt 1212:
1.16 tedu 1213: case OPT_ECS:
1214: useecs = true;
1215: break;
1.1 deraadt 1216:
1.16 tedu 1217: case OPT_NO_ECS:
1218: useecs = false;
1219: break;
1.1 deraadt 1220:
1.16 tedu 1221: case OPT_HEADER_FILE:
1222: headerfilename = arg;
1223: break;
1.1 deraadt 1224:
1.16 tedu 1225: case OPT_META_ECS:
1226: usemecs = true;
1227: break;
1.1 deraadt 1228:
1.16 tedu 1229: case OPT_NO_META_ECS:
1230: usemecs = false;
1231: break;
1.1 deraadt 1232:
1.16 tedu 1233: case OPT_PREPROCDEFINE:
1234: {
1235: /* arg is "symbol" or "symbol=definition". */
1.18 tedu 1236: char *def;
1.1 deraadt 1237:
1.16 tedu 1238: for (def = arg;
1.18 tedu 1239: *def != '\0' && *def != '='; ++def);
1.1 deraadt 1240:
1.18 tedu 1241: buf_strappend(&userdef_buf, "#define ");
1.16 tedu 1242: if (*def == '\0') {
1.18 tedu 1243: buf_strappend(&userdef_buf, arg);
1244: buf_strappend(&userdef_buf,
1245: " 1\n");
1246: } else {
1247: buf_strnappend(&userdef_buf, arg,
1248: def - arg);
1249: buf_strappend(&userdef_buf, " ");
1250: buf_strappend(&userdef_buf,
1251: def + 1);
1252: buf_strappend(&userdef_buf, "\n");
1.1 deraadt 1253: }
1.16 tedu 1254: }
1255: break;
1256:
1257: case OPT_READ:
1258: use_read = true;
1259: break;
1.1 deraadt 1260:
1.16 tedu 1261: case OPT_STACK:
1.18 tedu 1262: //buf_strdefine(&userdef_buf, "YY_STACK_USED", "1");
1263: buf_m4_define(&m4defs_buf, "M4_YY_STACK_USED", 0);
1.16 tedu 1264: break;
1265:
1266: case OPT_STDINIT:
1267: do_stdinit = true;
1268: break;
1269:
1270: case OPT_NO_STDINIT:
1271: do_stdinit = false;
1272: break;
1273:
1274: case OPT_YYCLASS:
1275: yyclass = arg;
1276: break;
1277:
1278: case OPT_YYLINENO:
1279: do_yylineno = true;
1280: break;
1281:
1282: case OPT_NO_YYLINENO:
1283: do_yylineno = false;
1284: break;
1285:
1286: case OPT_YYWRAP:
1287: do_yywrap = true;
1288: break;
1289:
1290: case OPT_NO_YYWRAP:
1291: do_yywrap = false;
1292: break;
1293:
1294: case OPT_YYMORE:
1295: yymore_really_used = true;
1296: break;
1297:
1298: case OPT_NO_YYMORE:
1299: yymore_really_used = false;
1300: break;
1301:
1302: case OPT_REJECT:
1303: reject_really_used = true;
1304: break;
1305:
1306: case OPT_NO_REJECT:
1307: reject_really_used = false;
1308: break;
1309:
1.18 tedu 1310: case OPT_NO_ANSI_FUNC_DEFS:
1311: ansi_func_defs = false;
1312: break;
1313:
1314: case OPT_NO_ANSI_FUNC_PROTOS:
1315: ansi_func_protos = false;
1316: break;
1.16 tedu 1317:
1318: case OPT_NO_YY_PUSH_STATE:
1.18 tedu 1319: //buf_strdefine(&userdef_buf, "YY_NO_PUSH_STATE", "1");
1320: buf_m4_define(&m4defs_buf, "M4_YY_NO_PUSH_STATE", 0);
1.16 tedu 1321: break;
1322: case OPT_NO_YY_POP_STATE:
1.18 tedu 1323: //buf_strdefine(&userdef_buf, "YY_NO_POP_STATE", "1");
1324: buf_m4_define(&m4defs_buf, "M4_YY_NO_POP_STATE", 0);
1.16 tedu 1325: break;
1326: case OPT_NO_YY_TOP_STATE:
1.18 tedu 1327: //buf_strdefine(&userdef_buf, "YY_NO_TOP_STATE", "1");
1328: buf_m4_define(&m4defs_buf, "M4_YY_NO_TOP_STATE", 0);
1.16 tedu 1329: break;
1330: case OPT_NO_UNPUT:
1.18 tedu 1331: //buf_strdefine(&userdef_buf, "YY_NO_UNPUT", "1");
1332: buf_m4_define(&m4defs_buf, "M4_YY_NO_UNPUT", 0);
1.16 tedu 1333: break;
1334: case OPT_NO_YY_SCAN_BUFFER:
1.18 tedu 1335: //buf_strdefine(&userdef_buf, "YY_NO_SCAN_BUFFER", "1");
1336: buf_m4_define(&m4defs_buf, "M4_YY_NO_SCAN_BUFFER", 0);
1.16 tedu 1337: break;
1338: case OPT_NO_YY_SCAN_BYTES:
1.18 tedu 1339: //buf_strdefine(&userdef_buf, "YY_NO_SCAN_BYTES", "1");
1340: buf_m4_define(&m4defs_buf, "M4_YY_NO_SCAN_BYTES", 0);
1.16 tedu 1341: break;
1342: case OPT_NO_YY_SCAN_STRING:
1.18 tedu 1343: //buf_strdefine(&userdef_buf, "YY_NO_SCAN_STRING", "1");
1344: buf_m4_define(&m4defs_buf, "M4_YY_NO_SCAN_STRING", 0);
1.16 tedu 1345: break;
1346: case OPT_NO_YYGET_EXTRA:
1.18 tedu 1347: //buf_strdefine(&userdef_buf, "YY_NO_GET_EXTRA", "1");
1348: buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_EXTRA", 0);
1.16 tedu 1349: break;
1350: case OPT_NO_YYSET_EXTRA:
1.18 tedu 1351: //buf_strdefine(&userdef_buf, "YY_NO_SET_EXTRA", "1");
1352: buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_EXTRA", 0);
1.16 tedu 1353: break;
1354: case OPT_NO_YYGET_LENG:
1.18 tedu 1355: //buf_strdefine(&userdef_buf, "YY_NO_GET_LENG", "1");
1356: buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_LENG", 0);
1.16 tedu 1357: break;
1358: case OPT_NO_YYGET_TEXT:
1.18 tedu 1359: //buf_strdefine(&userdef_buf, "YY_NO_GET_TEXT", "1");
1360: buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_TEXT", 0);
1.16 tedu 1361: break;
1362: case OPT_NO_YYGET_LINENO:
1.18 tedu 1363: //buf_strdefine(&userdef_buf, "YY_NO_GET_LINENO", "1");
1364: buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_LINENO", 0);
1.16 tedu 1365: break;
1366: case OPT_NO_YYSET_LINENO:
1.18 tedu 1367: //buf_strdefine(&userdef_buf, "YY_NO_SET_LINENO", "1");
1368: buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_LINENO", 0);
1.16 tedu 1369: break;
1370: case OPT_NO_YYGET_IN:
1.18 tedu 1371: //buf_strdefine(&userdef_buf, "YY_NO_GET_IN", "1");
1372: buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_IN", 0);
1.16 tedu 1373: break;
1374: case OPT_NO_YYSET_IN:
1.18 tedu 1375: //buf_strdefine(&userdef_buf, "YY_NO_SET_IN", "1");
1376: buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_IN", 0);
1.16 tedu 1377: break;
1378: case OPT_NO_YYGET_OUT:
1.18 tedu 1379: //buf_strdefine(&userdef_buf, "YY_NO_GET_OUT", "1");
1380: buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_OUT", 0);
1.16 tedu 1381: break;
1382: case OPT_NO_YYSET_OUT:
1.18 tedu 1383: //buf_strdefine(&userdef_buf, "YY_NO_SET_OUT", "1");
1384: buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_OUT", 0);
1.16 tedu 1385: break;
1386: case OPT_NO_YYGET_LVAL:
1.18 tedu 1387: //buf_strdefine(&userdef_buf, "YY_NO_GET_LVAL", "1");
1388: buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_LVAL", 0);
1.16 tedu 1389: break;
1390: case OPT_NO_YYSET_LVAL:
1.18 tedu 1391: //buf_strdefine(&userdef_buf, "YY_NO_SET_LVAL", "1");
1392: buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_LVAL", 0);
1.16 tedu 1393: break;
1394: case OPT_NO_YYGET_LLOC:
1.18 tedu 1395: //buf_strdefine(&userdef_buf, "YY_NO_GET_LLOC", "1");
1396: buf_m4_define(&m4defs_buf, "M4_YY_NO_GET_LLOC", 0);
1.16 tedu 1397: break;
1398: case OPT_NO_YYSET_LLOC:
1.18 tedu 1399: //buf_strdefine(&userdef_buf, "YY_NO_SET_LLOC", "1");
1400: buf_m4_define(&m4defs_buf, "M4_YY_NO_SET_LLOC", 0);
1.16 tedu 1401: break;
1402:
1403: } /* switch */
1404: } /* while scanopt() */
1405:
1.18 tedu 1406: scanopt_destroy(sopt);
1.1 deraadt 1407:
1.16 tedu 1408: num_input_files = argc - optind;
1409: input_files = argv + optind;
1.18 tedu 1410: set_input_file(num_input_files > 0 ? input_files[0] : NULL);
1.1 deraadt 1411:
1412: lastccl = lastsc = lastdfa = lastnfa = 0;
1413: num_rules = num_eof_rules = default_rule = 0;
1414: numas = numsnpairs = tmpuses = 0;
1.16 tedu 1415: numecs = numeps = eps2 = num_reallocs = hshcol = dfaeql = totnst =
1.18 tedu 1416: 0;
1.1 deraadt 1417: numuniq = numdup = hshsave = eofseen = datapos = dataline = 0;
1418: num_backing_up = onesp = numprots = 0;
1419: variable_trailing_context_rules = bol_needed = false;
1420:
1.16 tedu 1421: linenum = sectnum = 1;
1.1 deraadt 1422: firstprot = NIL;
1423:
1.18 tedu 1424: /*
1425: * Used in mkprot() so that the first proto goes in slot 1 of the
1426: * proto queue.
1.1 deraadt 1427: */
1428: lastprot = 1;
1429:
1.18 tedu 1430: set_up_initial_allocations();
1.16 tedu 1431: }
1.1 deraadt 1432:
1433:
1434: /* readin - read in the rules section of the input file(s) */
1435:
1.18 tedu 1436: void
1437: readin()
1.16 tedu 1438: {
1.1 deraadt 1439: static char yy_stdinit[] = "FILE *yyin = stdin, *yyout = stdout;";
1440: static char yy_nostdinit[] =
1.18 tedu 1441: "FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;";
1.1 deraadt 1442:
1.18 tedu 1443: line_directive_out((FILE *) 0, 1);
1.1 deraadt 1444:
1.18 tedu 1445: if (yyparse()) {
1446: pinpoint_message(_("fatal parse error"));
1447: flexend(1);
1.16 tedu 1448: }
1449: if (syntaxerror)
1.18 tedu 1450: flexend(1);
1.16 tedu 1451:
1.18 tedu 1452: /*
1453: * If the user explicitly requested posix compatibility by specifing
1454: * the posix-compat option, then we check for conflicting options.
1455: * However, if the POSIXLY_CORRECT variable is set, then we quietly
1456: * make flex as posix-compatible as possible. This is the
1457: * recommended behavior according to the GNU Coding Standards.
1458: *
1459: * Note: The posix option was added to flex to provide the posix
1460: * behavior of the repeat operator in regular expressions, e.g.,
1461: * `ab{3}'
1.16 tedu 1462: */
1463: if (posix_compat) {
1.18 tedu 1464: /*
1465: * TODO: This is where we try to make flex behave according
1466: * to posiz, AND check for conflicting options. How far
1467: * should we go with this? Should we disable all the neat-o
1468: * flex features?
1469: */
1470: /*
1471: * Update: Estes says no, since other flex features don't
1472: * violate posix.
1.16 tedu 1473: */
1474: }
1.18 tedu 1475: if (getenv("POSIXLY_CORRECT")) {
1.16 tedu 1476: posix_compat = true;
1477: }
1478: if (backing_up_report) {
1.18 tedu 1479: backing_up_file = fopen(backing_name, "w");
1.16 tedu 1480: if (backing_up_file == NULL)
1.18 tedu 1481: lerrsf(_
1482: ("could not create backing-up info file %s"),
1483: backing_name);
1484: } else
1.1 deraadt 1485: backing_up_file = NULL;
1486:
1.16 tedu 1487: if (yymore_really_used == true)
1.1 deraadt 1488: yymore_used = true;
1.16 tedu 1489: else if (yymore_really_used == false)
1.1 deraadt 1490: yymore_used = false;
1491:
1.16 tedu 1492: if (reject_really_used == true)
1.1 deraadt 1493: reject = true;
1.16 tedu 1494: else if (reject_really_used == false)
1.1 deraadt 1495: reject = false;
1496:
1.16 tedu 1497: if (performance_report > 0) {
1498: if (lex_compat) {
1.18 tedu 1499: fprintf(stderr,
1500: _
1501: ("-l AT&T lex compatibility option entails a large performance penalty\n"));
1502: fprintf(stderr,
1503: _
1504: (" and may be the actual source of other reported performance penalties\n"));
1505: } else if (do_yylineno) {
1506: fprintf(stderr,
1507: _
1508: ("%%option yylineno entails a performance penalty ONLY on rules that can match newline characters\n"));
1.16 tedu 1509: }
1510: if (performance_report > 1) {
1511: if (interactive)
1.18 tedu 1512: fprintf(stderr,
1513: _
1514: ("-I (interactive) entails a minor performance penalty\n"));
1.16 tedu 1515:
1516: if (yymore_used)
1.18 tedu 1517: fprintf(stderr,
1518: _
1519: ("yymore() entails a minor performance penalty\n"));
1.16 tedu 1520: }
1521: if (reject)
1.18 tedu 1522: fprintf(stderr,
1523: _
1524: ("REJECT entails a large performance penalty\n"));
1.16 tedu 1525:
1526: if (variable_trailing_context_rules)
1.18 tedu 1527: fprintf(stderr,
1528: _
1529: ("Variable trailing context rules entail a large performance penalty\n"));
1.16 tedu 1530: }
1531: if (reject)
1.1 deraadt 1532: real_reject = true;
1533:
1.16 tedu 1534: if (variable_trailing_context_rules)
1.1 deraadt 1535: reject = true;
1536:
1.16 tedu 1537: if ((fulltbl || fullspd) && reject) {
1538: if (real_reject)
1.18 tedu 1539: flexerror(_
1540: ("REJECT cannot be used with -f or -F"));
1.16 tedu 1541: else if (do_yylineno)
1.18 tedu 1542: flexerror(_
1543: ("%option yylineno cannot be used with REJECT"));
1.1 deraadt 1544: else
1.18 tedu 1545: flexerror(_
1546: ("variable trailing context rules cannot be used with -f or -F"));
1547: }
1548: if (reject) {
1549: out_m4_define("M4_YY_USES_REJECT", NULL);
1550: //outn("\n#define YY_USES_REJECT");
1.16 tedu 1551: }
1552: if (!do_yywrap) {
1553: if (!C_plus_plus)
1.18 tedu 1554: if (reentrant)
1555: outn("\n#define yywrap(yyscanner) 1");
1556: else
1557: outn("\n#define yywrap() 1");
1558: outn("#define YY_SKIP_YYWRAP");
1.16 tedu 1559: }
1560: if (ddebug)
1.18 tedu 1561: outn("\n#define FLEX_DEBUG");
1.1 deraadt 1562:
1.18 tedu 1563: OUT_BEGIN_CODE();
1.16 tedu 1564: if (csize == 256)
1.18 tedu 1565: outn("typedef unsigned char YY_CHAR;");
1.1 deraadt 1566: else
1.18 tedu 1567: outn("typedef char YY_CHAR;");
1568: OUT_END_CODE();
1.16 tedu 1569:
1570: if (C_plus_plus) {
1.18 tedu 1571: outn("#define yytext_ptr yytext");
1.1 deraadt 1572:
1.16 tedu 1573: if (interactive)
1.18 tedu 1574: outn("#define YY_INTERACTIVE");
1575: } else {
1576: OUT_BEGIN_CODE();
1.16 tedu 1577: /* In reentrant scanner, stdinit is handled in flex.skl. */
1578: if (do_stdinit) {
1.18 tedu 1579: if (reentrant) {
1580: outn("#define YY_STDINIT");
1.17 tedu 1581: }
1.18 tedu 1582: outn(yy_stdinit);
1.17 tedu 1583: } else {
1.18 tedu 1584: if (!reentrant)
1585: outn(yy_nostdinit);
1.1 deraadt 1586: }
1.18 tedu 1587: OUT_END_CODE();
1.16 tedu 1588: }
1.1 deraadt 1589:
1.18 tedu 1590: OUT_BEGIN_CODE();
1.16 tedu 1591: if (fullspd)
1.18 tedu 1592: outn("typedef yyconst struct yy_trans_info *yy_state_type;");
1.16 tedu 1593: else if (!C_plus_plus)
1.18 tedu 1594: outn("typedef int yy_state_type;");
1595: OUT_END_CODE();
1.16 tedu 1596:
1597: if (lex_compat)
1.18 tedu 1598: outn("#define YY_FLEX_LEX_COMPAT");
1.16 tedu 1599:
1600: if (!C_plus_plus && !reentrant) {
1.18 tedu 1601: outn("extern int yylineno;");
1602: OUT_BEGIN_CODE();
1603: outn("int yylineno = 1;");
1604: OUT_END_CODE();
1.16 tedu 1605: }
1606: if (C_plus_plus) {
1.18 tedu 1607: outn("\n#include <FlexLexer.h>");
1.1 deraadt 1608:
1.18 tedu 1609: if (!do_yywrap) {
1.16 tedu 1610: outn("\nint yyFlexLexer::yywrap() { return 1; }");
1.1 deraadt 1611: }
1.16 tedu 1612: if (yyclass) {
1.18 tedu 1613: outn("int yyFlexLexer::yylex()");
1614: outn("\t{");
1615: outn("\tLexerError( \"yyFlexLexer::yylex invoked but %option yyclass used\" );");
1616: outn("\treturn 0;");
1617: outn("\t}");
1.1 deraadt 1618:
1.18 tedu 1619: out_str("\n#define YY_DECL int %s::yylex()\n",
1620: yyclass);
1.1 deraadt 1621: }
1.18 tedu 1622: } else {
1.1 deraadt 1623:
1.18 tedu 1624: /*
1625: * Watch out: yytext_ptr is a variable when yytext is an
1626: * array, but it's a macro when yytext is a pointer.
1.16 tedu 1627: */
1628: if (yytext_is_array) {
1629: if (!reentrant)
1.18 tedu 1630: outn("extern char yytext[];\n");
1631: } else {
1.16 tedu 1632: if (reentrant) {
1.18 tedu 1633: outn("#define yytext_ptr yytext_r");
1634: } else {
1635: outn("extern char *yytext;");
1636: outn("#define yytext_ptr yytext");
1.1 deraadt 1637: }
1.16 tedu 1638: }
1.1 deraadt 1639:
1.16 tedu 1640: if (yyclass)
1.18 tedu 1641: flexerror(_
1642: ("%option yyclass only meaningful for C++ scanners"));
1.16 tedu 1643: }
1.1 deraadt 1644:
1.16 tedu 1645: if (useecs)
1.18 tedu 1646: numecs = cre8ecs(nextecm, ecgroup, csize);
1.1 deraadt 1647: else
1648: numecs = csize;
1649:
1650: /* Now map the equivalence class for NUL to its expected place. */
1651: ecgroup[0] = ecgroup[csize];
1.18 tedu 1652: NUL_ec = ABS(ecgroup[0]);
1.1 deraadt 1653:
1.16 tedu 1654: if (useecs)
1.18 tedu 1655: ccl2ecl();
1.16 tedu 1656: }
1.1 deraadt 1657:
1658:
1659: /* set_up_initial_allocations - allocate memory for internal tables */
1660:
1.18 tedu 1661: void
1662: set_up_initial_allocations()
1.16 tedu 1663: {
1664: maximum_mns = (long_align ? MAXIMUM_MNS_LONG : MAXIMUM_MNS);
1.1 deraadt 1665: current_mns = INITIAL_MNS;
1.18 tedu 1666: firstst = allocate_integer_array(current_mns);
1667: lastst = allocate_integer_array(current_mns);
1668: finalst = allocate_integer_array(current_mns);
1669: transchar = allocate_integer_array(current_mns);
1670: trans1 = allocate_integer_array(current_mns);
1671: trans2 = allocate_integer_array(current_mns);
1672: accptnum = allocate_integer_array(current_mns);
1673: assoc_rule = allocate_integer_array(current_mns);
1674: state_type = allocate_integer_array(current_mns);
1.1 deraadt 1675:
1676: current_max_rules = INITIAL_MAX_RULES;
1.18 tedu 1677: rule_type = allocate_integer_array(current_max_rules);
1678: rule_linenum = allocate_integer_array(current_max_rules);
1679: rule_useful = allocate_integer_array(current_max_rules);
1680: rule_has_nl = allocate_bool_array(current_max_rules);
1.1 deraadt 1681:
1682: current_max_scs = INITIAL_MAX_SCS;
1.18 tedu 1683: scset = allocate_integer_array(current_max_scs);
1684: scbol = allocate_integer_array(current_max_scs);
1685: scxclu = allocate_integer_array(current_max_scs);
1686: sceof = allocate_integer_array(current_max_scs);
1687: scname = allocate_char_ptr_array(current_max_scs);
1.1 deraadt 1688:
1689: current_maxccls = INITIAL_MAX_CCLS;
1.18 tedu 1690: cclmap = allocate_integer_array(current_maxccls);
1691: ccllen = allocate_integer_array(current_maxccls);
1692: cclng = allocate_integer_array(current_maxccls);
1693: ccl_has_nl = allocate_bool_array(current_maxccls);
1.1 deraadt 1694:
1695: current_max_ccl_tbl_size = INITIAL_MAX_CCL_TBL_SIZE;
1.18 tedu 1696: ccltbl = allocate_Character_array(current_max_ccl_tbl_size);
1.1 deraadt 1697:
1698: current_max_dfa_size = INITIAL_MAX_DFA_SIZE;
1699:
1700: current_max_xpairs = INITIAL_MAX_XPAIRS;
1.18 tedu 1701: nxt = allocate_integer_array(current_max_xpairs);
1702: chk = allocate_integer_array(current_max_xpairs);
1.1 deraadt 1703:
1704: current_max_template_xpairs = INITIAL_MAX_TEMPLATE_XPAIRS;
1.18 tedu 1705: tnxt = allocate_integer_array(current_max_template_xpairs);
1.1 deraadt 1706:
1707: current_max_dfas = INITIAL_MAX_DFAS;
1.18 tedu 1708: base = allocate_integer_array(current_max_dfas);
1709: def = allocate_integer_array(current_max_dfas);
1710: dfasiz = allocate_integer_array(current_max_dfas);
1711: accsiz = allocate_integer_array(current_max_dfas);
1712: dhash = allocate_integer_array(current_max_dfas);
1713: dss = allocate_int_ptr_array(current_max_dfas);
1714: dfaacc = allocate_dfaacc_union(current_max_dfas);
1.1 deraadt 1715:
1716: nultrans = (int *) 0;
1.16 tedu 1717: }
1.1 deraadt 1718:
1719:
1.16 tedu 1720: /* extracts basename from path, optionally stripping the extension "\.*"
1721: * (same concept as /bin/sh `basename`, but different handling of extension). */
1.18 tedu 1722: static char *
1723: basename2(path, strip_ext)
1724: char *path;
1725: int strip_ext; /* boolean */
1.16 tedu 1726: {
1.18 tedu 1727: char *b, *e = 0;
1.16 tedu 1728:
1729: b = path;
1730: for (b = path; *path; path++)
1731: if (*path == '/')
1732: b = path + 1;
1733: else if (*path == '.')
1734: e = path;
1735:
1736: if (strip_ext && e && e > b)
1737: *e = '\0';
1738: return b;
1739: }
1740:
1.18 tedu 1741: void
1742: usage()
1.16 tedu 1743: {
1.18 tedu 1744: FILE *f = stdout;
1.16 tedu 1745:
1746: if (!did_outfilename) {
1.18 tedu 1747: snprintf(outfile_path, sizeof(outfile_path), outfile_template,
1748: prefix, C_plus_plus ? "cc" : "c");
1.16 tedu 1749: outfilename = outfile_path;
1750: }
1.18 tedu 1751: fprintf(f, _("Usage: %s [OPTIONS] [FILE]...\n"), program_name);
1752: fprintf(f,
1753: _
1754: ("Generates programs that perform pattern-matching on text.\n"
1755: "\n" "Table Compression:\n"
1756: " -Ca, --align trade off larger tables for better memory alignment\n"
1757: " -Ce, --ecs construct equivalence classes\n"
1758: " -Cf do not compress tables; use -f representation\n"
1759: " -CF do not compress tables; use -F representation\n"
1760: " -Cm, --meta-ecs construct meta-equivalence classes\n"
1761: " -Cr, --read use read() instead of stdio for scanner input\n"
1762: " -f, --full generate fast, large scanner. Same as -Cfr\n"
1763: " -F, --fast use alternate table representation. Same as -CFr\n"
1764: " -Cem default compression (same as --ecs --meta-ecs)\n"
1765: "\n" "Debugging:\n"
1766: " -d, --debug enable debug mode in scanner\n"
1767: " -b, --backup write backing-up information to %s\n"
1768: " -p, --perf-report write performance report to stderr\n"
1769: " -s, --nodefault suppress default rule to ECHO unmatched text\n"
1770: " -T, --trace %s should run in trace mode\n"
1771: " -w, --nowarn do not generate warnings\n"
1772: " -v, --verbose write summary of scanner statistics to stdout\n"
1773: "\n" "Files:\n"
1774: " -o, --outfile=FILE specify output filename\n"
1775: " -S, --skel=FILE specify skeleton file\n"
1776: " -t, --stdout write scanner on stdout instead of %s\n"
1777: " --yyclass=NAME name of C++ class\n"
1778: " --header-file=FILE create a C header file in addition to the scanner\n"
1779: " --tables-file[=FILE] write tables to FILE\n" "\n"
1780: "Scanner behavior:\n"
1781: " -7, --7bit generate 7-bit scanner\n"
1782: " -8, --8bit generate 8-bit scanner\n"
1783: " -B, --batch generate batch scanner (opposite of -I)\n"
1784: " -i, --case-insensitive ignore case in patterns\n"
1785: " -l, --lex-compat maximal compatibility with original lex\n"
1786: " -X, --posix-compat maximal compatibility with POSIX lex\n"
1787: " -I, --interactive generate interactive scanner (opposite of -B)\n"
1788: " --yylineno track line count in yylineno\n"
1789: "\n" "Generated code:\n"
1790: " -+, --c++ generate C++ scanner class\n"
1791: " -Dmacro[=defn] #define macro defn (default defn is '1')\n"
1792: " -L, --noline suppress #line directives in scanner\n"
1793: " -P, --prefix=STRING use STRING as prefix instead of \"yy\"\n"
1794: " -R, --reentrant generate a reentrant C scanner\n"
1795: " --bison-bridge scanner for bison pure parser.\n"
1796: " --bison-locations include yylloc support.\n"
1797: " --stdinit initialize yyin/yyout to stdin/stdout\n"
1798: " --noansi-definitions old-style function definitions\n"
1799: " --noansi-prototypes empty parameter list in prototypes\n"
1800: " --nounistd do not include <unistd.h>\n"
1801: " --noFUNCTION do not generate a particular FUNCTION\n"
1802: "\n" "Miscellaneous:\n"
1803: " -n do-nothing POSIX option\n"
1804: " -?\n"
1805: " -h, --help produce this help message\n"
1806: " -V, --version report %s version\n"),
1807: backing_name, program_name, outfile_path, program_name);
1.1 deraadt 1808:
1.16 tedu 1809: }
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