10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
300Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
310Sstevel@tonic-gate
320Sstevel@tonic-gate /*
330Sstevel@tonic-gate * IMPORTANT NOTE:
340Sstevel@tonic-gate *
350Sstevel@tonic-gate * regcmp() WORKS **ONLY** WITH THE ASCII AND THE Solaris EUC CHARACTER SETS.
360Sstevel@tonic-gate * IT IS **NOT** CHARACTER SET INDEPENDENT.
370Sstevel@tonic-gate *
380Sstevel@tonic-gate */
390Sstevel@tonic-gate
40*6812Sraf #pragma weak _regcmp = regcmp
410Sstevel@tonic-gate
42*6812Sraf #include "lint.h"
430Sstevel@tonic-gate #include "mtlib.h"
440Sstevel@tonic-gate #include <limits.h>
450Sstevel@tonic-gate #include <stdarg.h>
460Sstevel@tonic-gate #include <stdlib.h>
470Sstevel@tonic-gate #include <thread.h>
480Sstevel@tonic-gate #include <wctype.h>
490Sstevel@tonic-gate #include <widec.h>
500Sstevel@tonic-gate #include <string.h>
510Sstevel@tonic-gate #include "tsd.h"
520Sstevel@tonic-gate
530Sstevel@tonic-gate
540Sstevel@tonic-gate /* CONSTANTS SHARED WITH regex() */
550Sstevel@tonic-gate
560Sstevel@tonic-gate #include "regex.h"
570Sstevel@tonic-gate
580Sstevel@tonic-gate /* PRIVATE CONSTANTS */
590Sstevel@tonic-gate
600Sstevel@tonic-gate #define BACKSLASH '\\'
610Sstevel@tonic-gate #define CIRCUMFLEX '^'
620Sstevel@tonic-gate #define COMMA ','
630Sstevel@tonic-gate #define DASH '-'
640Sstevel@tonic-gate #define DOLLAR_SIGN '$'
650Sstevel@tonic-gate #define DOT '.'
660Sstevel@tonic-gate #define LEFT_CURLY_BRACE '{'
670Sstevel@tonic-gate #define LEFT_PAREN '('
680Sstevel@tonic-gate #define LEFT_SQUARE_BRACKET '['
690Sstevel@tonic-gate #define PLUS '+'
700Sstevel@tonic-gate #define RIGHT_CURLY_BRACE '}'
710Sstevel@tonic-gate #define RIGHT_PAREN ')'
720Sstevel@tonic-gate #define RIGHT_SQUARE_BRACKET ']'
730Sstevel@tonic-gate #define SINGLE_BYTE_MASK 0xff
740Sstevel@tonic-gate #define STRINGP_STACK_SIZE 50
750Sstevel@tonic-gate #define STAR '*'
760Sstevel@tonic-gate
770Sstevel@tonic-gate /* PRIVATE GLOBAL VARIABLES */
780Sstevel@tonic-gate
790Sstevel@tonic-gate static char *compilep_stack[STRINGP_STACK_SIZE];
800Sstevel@tonic-gate static char **compilep_stackp;
810Sstevel@tonic-gate static mutex_t regcmp_lock = DEFAULTMUTEX;
820Sstevel@tonic-gate
830Sstevel@tonic-gate /* DECLARATIONS OF PRIVATE FUNCTIONS */
840Sstevel@tonic-gate
850Sstevel@tonic-gate static int add_char(char *compilep, wchar_t wchar);
860Sstevel@tonic-gate static int add_single_char_expr(char *compilep, wchar_t wchar);
870Sstevel@tonic-gate
880Sstevel@tonic-gate #define ERROR_EXIT(mutex_lockp, arg_listp, compile_startp) \
890Sstevel@tonic-gate \
900Sstevel@tonic-gate va_end(arg_listp); \
910Sstevel@tonic-gate lmutex_unlock(mutex_lockp); \
920Sstevel@tonic-gate if ((compile_startp) != (char *)0) \
930Sstevel@tonic-gate free((void *)compile_startp); \
940Sstevel@tonic-gate return ((char *)0)
950Sstevel@tonic-gate
960Sstevel@tonic-gate static int get_count(int *countp, const char *regexp);
970Sstevel@tonic-gate static int get_digit(const char *regexp);
980Sstevel@tonic-gate static int get_wchar(wchar_t *wchar, const char *regexp);
990Sstevel@tonic-gate static char *pop_compilep(void);
1000Sstevel@tonic-gate static char *push_compilep(char *compilep);
1010Sstevel@tonic-gate static boolean_t valid_range(wchar_t lower_char, wchar_t upper_char);
1020Sstevel@tonic-gate
1030Sstevel@tonic-gate
1040Sstevel@tonic-gate /* DEFINITIONS OF PUBLIC VARIABLES */
1050Sstevel@tonic-gate
1060Sstevel@tonic-gate int __i_size;
1070Sstevel@tonic-gate
1080Sstevel@tonic-gate /*
1090Sstevel@tonic-gate * define thread-specific storage for __i_size
1100Sstevel@tonic-gate *
1110Sstevel@tonic-gate */
1120Sstevel@tonic-gate int *
___i_size(void)1130Sstevel@tonic-gate ___i_size(void)
1140Sstevel@tonic-gate {
115*6812Sraf if (thr_main())
1160Sstevel@tonic-gate return (&__i_size);
1170Sstevel@tonic-gate return ((int *)tsdalloc(_T_REGCMP_ISIZE, sizeof (int), NULL));
1180Sstevel@tonic-gate }
1190Sstevel@tonic-gate
1200Sstevel@tonic-gate #define __i_size (*(___i_size()))
1210Sstevel@tonic-gate
1220Sstevel@tonic-gate /* DEFINITION OF regcmp() */
1230Sstevel@tonic-gate
1240Sstevel@tonic-gate extern char *
regcmp(const char * regexp,...)1250Sstevel@tonic-gate regcmp(const char *regexp, ...)
1260Sstevel@tonic-gate {
1270Sstevel@tonic-gate va_list arg_listp;
1280Sstevel@tonic-gate size_t arg_strlen;
1290Sstevel@tonic-gate boolean_t can_repeat;
1300Sstevel@tonic-gate int char_size;
1310Sstevel@tonic-gate unsigned int class_length;
1320Sstevel@tonic-gate char *compilep;
1330Sstevel@tonic-gate char *compile_startp = (char *)0;
1340Sstevel@tonic-gate int count_length;
1350Sstevel@tonic-gate wchar_t current_char;
1360Sstevel@tonic-gate int expr_length;
1370Sstevel@tonic-gate int groupn;
1380Sstevel@tonic-gate unsigned int group_length;
1390Sstevel@tonic-gate unsigned int high_bits;
1400Sstevel@tonic-gate boolean_t dash_indicates_range;
1410Sstevel@tonic-gate unsigned int low_bits;
1420Sstevel@tonic-gate int max_count;
1430Sstevel@tonic-gate int min_count;
1440Sstevel@tonic-gate const char *next_argp;
1450Sstevel@tonic-gate wchar_t first_char_in_range;
1460Sstevel@tonic-gate char *regex_typep;
1470Sstevel@tonic-gate int return_arg_number;
1480Sstevel@tonic-gate int substringn;
1490Sstevel@tonic-gate
1500Sstevel@tonic-gate if (___i_size() == (int *)0)
1510Sstevel@tonic-gate return ((char *)0);
1520Sstevel@tonic-gate
1530Sstevel@tonic-gate /*
1540Sstevel@tonic-gate * When compiling a regular expression, regcmp() generates at most
1550Sstevel@tonic-gate * two extra single-byte characters for each character in the
1560Sstevel@tonic-gate * expression, so allocating three times the number of bytes in all
1570Sstevel@tonic-gate * the strings that comprise the regular expression will ensure that
1580Sstevel@tonic-gate * regcmp() won't overwrite the end of the allocated block when
1590Sstevel@tonic-gate * compiling the expression.
1600Sstevel@tonic-gate */
1610Sstevel@tonic-gate
1620Sstevel@tonic-gate va_start(arg_listp, regexp);
1630Sstevel@tonic-gate next_argp = regexp;
1640Sstevel@tonic-gate arg_strlen = 0;
1650Sstevel@tonic-gate while (next_argp != (char *)0) {
1660Sstevel@tonic-gate arg_strlen += strlen(next_argp);
1670Sstevel@tonic-gate next_argp = va_arg(arg_listp, /* const */ char *);
1680Sstevel@tonic-gate }
1690Sstevel@tonic-gate va_end(arg_listp);
1700Sstevel@tonic-gate
1710Sstevel@tonic-gate if (arg_strlen == 0)
1720Sstevel@tonic-gate return ((char *)0);
1730Sstevel@tonic-gate compile_startp = (char *)malloc(3 * arg_strlen);
1740Sstevel@tonic-gate if (compile_startp == (char *)0)
1750Sstevel@tonic-gate return ((char *)0);
1760Sstevel@tonic-gate
1770Sstevel@tonic-gate lmutex_lock(®cmp_lock);
1780Sstevel@tonic-gate __i_size = 0;
1790Sstevel@tonic-gate compilep = compile_startp;
1800Sstevel@tonic-gate compilep_stackp = &compilep_stack[STRINGP_STACK_SIZE];
1810Sstevel@tonic-gate
1820Sstevel@tonic-gate /* GET THE FIRST CHARACTER IN THE REGULAR EXPRESSION */
1830Sstevel@tonic-gate va_start(arg_listp, regexp);
1840Sstevel@tonic-gate next_argp = va_arg(arg_listp, /* const */ char *);
1850Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
1860Sstevel@tonic-gate if (char_size < 0) {
1870Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp, compile_startp);
1880Sstevel@tonic-gate } else if (char_size > 0) {
1890Sstevel@tonic-gate regexp += char_size;
1900Sstevel@tonic-gate } else /* (char_size == 0 ) */ {
1910Sstevel@tonic-gate regexp = next_argp;
1920Sstevel@tonic-gate next_argp = va_arg(arg_listp, /* const */ char *);
1930Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
1940Sstevel@tonic-gate if (char_size <= 0) {
1950Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp, compile_startp);
1960Sstevel@tonic-gate } else {
1970Sstevel@tonic-gate regexp += char_size;
1980Sstevel@tonic-gate }
1990Sstevel@tonic-gate }
2000Sstevel@tonic-gate
2010Sstevel@tonic-gate /* FIND OUT IF THE EXPRESSION MUST START AT THE START OF A STRING */
2020Sstevel@tonic-gate
2030Sstevel@tonic-gate if (current_char == CIRCUMFLEX) {
2040Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
2050Sstevel@tonic-gate if (char_size < 0) {
2060Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp, compile_startp);
2070Sstevel@tonic-gate } else if (char_size > 0) {
2080Sstevel@tonic-gate regexp += char_size;
2090Sstevel@tonic-gate *compilep = (unsigned char)START_OF_STRING_MARK;
2100Sstevel@tonic-gate compilep++;
2110Sstevel@tonic-gate } else if /* (char_size == 0) && */ (next_argp != (char *)0) {
2120Sstevel@tonic-gate regexp = next_argp;
2130Sstevel@tonic-gate next_argp = va_arg(arg_listp, /* const */ char *);
2140Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
2150Sstevel@tonic-gate if (char_size <= 0) {
2160Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
2170Sstevel@tonic-gate compile_startp);
2180Sstevel@tonic-gate } else {
2190Sstevel@tonic-gate regexp += char_size;
2200Sstevel@tonic-gate }
2210Sstevel@tonic-gate *compilep = (unsigned char)START_OF_STRING_MARK;
2220Sstevel@tonic-gate compilep++;
2230Sstevel@tonic-gate } else {
2240Sstevel@tonic-gate /* ((char_size==0) && (next_argp==(char *)0)) */
2250Sstevel@tonic-gate /*
2260Sstevel@tonic-gate * the regular expression is "^"
2270Sstevel@tonic-gate */
2280Sstevel@tonic-gate *compilep = (unsigned char)START_OF_STRING_MARK;
2290Sstevel@tonic-gate compilep++;
2300Sstevel@tonic-gate *compilep = (unsigned char)END_REGEX;
2310Sstevel@tonic-gate compilep++;
2320Sstevel@tonic-gate *compilep = '\0';
2330Sstevel@tonic-gate compilep++;
2340Sstevel@tonic-gate __i_size = (int)(compilep - compile_startp);
2350Sstevel@tonic-gate va_end(arg_listp);
2360Sstevel@tonic-gate lmutex_unlock(®cmp_lock);
2370Sstevel@tonic-gate return (compile_startp);
2380Sstevel@tonic-gate }
2390Sstevel@tonic-gate }
2400Sstevel@tonic-gate
2410Sstevel@tonic-gate /* COMPILE THE REGULAR EXPRESSION */
2420Sstevel@tonic-gate
2430Sstevel@tonic-gate groupn = 0;
2440Sstevel@tonic-gate substringn = 0;
2450Sstevel@tonic-gate can_repeat = B_FALSE;
2460Sstevel@tonic-gate for (;;) {
2470Sstevel@tonic-gate
2480Sstevel@tonic-gate /*
2490Sstevel@tonic-gate * At the end of each iteration get the next character
2500Sstevel@tonic-gate * from the regular expression and increment regexp to
2510Sstevel@tonic-gate * point to the following character. Exit when all
2520Sstevel@tonic-gate * the characters in all the strings in the argument
2530Sstevel@tonic-gate * list have been read.
2540Sstevel@tonic-gate */
2550Sstevel@tonic-gate
2560Sstevel@tonic-gate switch (current_char) {
2570Sstevel@tonic-gate
2580Sstevel@tonic-gate /*
2590Sstevel@tonic-gate * No fall-through. Each case ends with either
2600Sstevel@tonic-gate * a break or an error exit. Each case starts
2610Sstevel@tonic-gate * with compilep addressing the next location to
2620Sstevel@tonic-gate * be written in the compiled regular expression,
2630Sstevel@tonic-gate * and with regexp addressing the next character
2640Sstevel@tonic-gate * to be read from the regular expression being
2650Sstevel@tonic-gate * compiled. Each case that doesn't return
2660Sstevel@tonic-gate * increments regexp to address the next character
2670Sstevel@tonic-gate * to be read from the regular expression and
2680Sstevel@tonic-gate * increments compilep to address the next
2690Sstevel@tonic-gate * location to be written in the compiled
2700Sstevel@tonic-gate * regular expression.
2710Sstevel@tonic-gate *
2720Sstevel@tonic-gate * NOTE: The comments for each case give the meaning
2730Sstevel@tonic-gate * of the regular expression compiled by the case
2740Sstevel@tonic-gate * and the character string written to the compiled
2750Sstevel@tonic-gate * regular expression by the case. Each single
2760Sstevel@tonic-gate * character
2770Sstevel@tonic-gate * written to the compiled regular expression is
2780Sstevel@tonic-gate * shown enclosed in angle brackets (<>). Each
2790Sstevel@tonic-gate * compiled regular expression begins with a marker
2800Sstevel@tonic-gate * character which is shown as a named constant
2810Sstevel@tonic-gate * (e.g. <ASCII_CHAR>). Character constants are
2820Sstevel@tonic-gate * shown enclosed in single quotes (e.g. <'$'>).
2830Sstevel@tonic-gate * All other single characters written to the
2840Sstevel@tonic-gate * compiled regular expression are shown as lower
2850Sstevel@tonic-gate * case variable names (e.g. <ascii_char> or
2860Sstevel@tonic-gate * <multibyte_char>). Multicharacter
2870Sstevel@tonic-gate * strings written to the compiled regular expression
2880Sstevel@tonic-gate * are shown as variable names followed by elipses
2890Sstevel@tonic-gate * (e.g. <regex...>).
2900Sstevel@tonic-gate */
2910Sstevel@tonic-gate
2920Sstevel@tonic-gate case DOLLAR_SIGN:
2930Sstevel@tonic-gate /* end of string marker or simple dollar sign */
2940Sstevel@tonic-gate /* compiles to <END_OF_STRING_MARK> or */
2950Sstevel@tonic-gate /* <ASCII_CHAR><'$'> */
2960Sstevel@tonic-gate
2970Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
2980Sstevel@tonic-gate if ((char_size == 0) && (next_argp == (char *)0)) {
2990Sstevel@tonic-gate can_repeat = B_FALSE;
3000Sstevel@tonic-gate *compilep = (unsigned char)END_OF_STRING_MARK;
3010Sstevel@tonic-gate compilep++;
3020Sstevel@tonic-gate } else {
3030Sstevel@tonic-gate can_repeat = B_TRUE;
3040Sstevel@tonic-gate *compilep = (unsigned char)ASCII_CHAR;
3050Sstevel@tonic-gate regex_typep = compilep;
3060Sstevel@tonic-gate compilep++;
3070Sstevel@tonic-gate *compilep = DOLLAR_SIGN;
3080Sstevel@tonic-gate compilep++;
3090Sstevel@tonic-gate }
3100Sstevel@tonic-gate break; /* end case DOLLAR_SIGN */
3110Sstevel@tonic-gate
3120Sstevel@tonic-gate case DOT: /* any character */
3130Sstevel@tonic-gate
3140Sstevel@tonic-gate /* compiles to <ANY_CHAR> */
3150Sstevel@tonic-gate
3160Sstevel@tonic-gate can_repeat = B_TRUE;
3170Sstevel@tonic-gate *compilep = (unsigned char)ANY_CHAR;
3180Sstevel@tonic-gate regex_typep = compilep;
3190Sstevel@tonic-gate compilep++;
3200Sstevel@tonic-gate
3210Sstevel@tonic-gate break; /* end case DOT */
3220Sstevel@tonic-gate
3230Sstevel@tonic-gate case BACKSLASH: /* escaped character */
3240Sstevel@tonic-gate
3250Sstevel@tonic-gate /*
3260Sstevel@tonic-gate * compiles to <ASCII_CHAR><ascii_char> or
3270Sstevel@tonic-gate * <MULTIBYTE_CHAR><multibyte_char>
3280Sstevel@tonic-gate */
3290Sstevel@tonic-gate
3300Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
3310Sstevel@tonic-gate if (char_size <= 0) {
3320Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
3330Sstevel@tonic-gate compile_startp);
3340Sstevel@tonic-gate } else {
3350Sstevel@tonic-gate regexp += char_size;
3360Sstevel@tonic-gate can_repeat = B_TRUE;
3370Sstevel@tonic-gate expr_length = add_single_char_expr(
3380Sstevel@tonic-gate compilep, current_char);
3390Sstevel@tonic-gate regex_typep = compilep;
3400Sstevel@tonic-gate compilep += expr_length;
3410Sstevel@tonic-gate }
3420Sstevel@tonic-gate break; /* end case '\\' */
3430Sstevel@tonic-gate
3440Sstevel@tonic-gate case LEFT_SQUARE_BRACKET:
3450Sstevel@tonic-gate /* start of a character class expression */
3460Sstevel@tonic-gate
3470Sstevel@tonic-gate /*
3480Sstevel@tonic-gate * [^...c...] compiles to
3490Sstevel@tonic-gate * <NOT_IN_CLASS><class_length><...c...>
3500Sstevel@tonic-gate * [^...a-z...] compiles to
3510Sstevel@tonic-gate * <NOT_IN_CLASS><class_length><...a<THRU>z...>
3520Sstevel@tonic-gate * [...c...] compiles to
3530Sstevel@tonic-gate * <IN_CLASS><class_length><...c...>
3540Sstevel@tonic-gate * [...a-z...] compiles to
3550Sstevel@tonic-gate * <IN_CLASS><class_length><...a<THRU>z...>
3560Sstevel@tonic-gate *
3570Sstevel@tonic-gate * NOTE: <class_length> includes the
3580Sstevel@tonic-gate * <class_length> byte
3590Sstevel@tonic-gate */
3600Sstevel@tonic-gate
3610Sstevel@tonic-gate can_repeat = B_TRUE;
3620Sstevel@tonic-gate regex_typep = compilep;
3630Sstevel@tonic-gate
3640Sstevel@tonic-gate /* DETERMINE THE CLASS TYPE */
3650Sstevel@tonic-gate
3660Sstevel@tonic-gate /*
3670Sstevel@tonic-gate * NOTE: This algorithm checks the value of the
3680Sstevel@tonic-gate * "multibyte"
3690Sstevel@tonic-gate * macro in <euc.h> (included in <widec.h> )
3700Sstevel@tonic-gate * to find out if regcmp()
3710Sstevel@tonic-gate * is compiling the regular expression in a
3720Sstevel@tonic-gate * multibyte locale.
3730Sstevel@tonic-gate */
3740Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
3750Sstevel@tonic-gate if (char_size <= 0) {
3760Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
3770Sstevel@tonic-gate compile_startp);
3780Sstevel@tonic-gate } else if (current_char == CIRCUMFLEX) {
3790Sstevel@tonic-gate regexp++;
3800Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
3810Sstevel@tonic-gate if (char_size <= 0) {
3820Sstevel@tonic-gate ERROR_EXIT(®cmp_lock,
3830Sstevel@tonic-gate arg_listp, compile_startp);
3840Sstevel@tonic-gate } else {
3850Sstevel@tonic-gate regexp += char_size;
3860Sstevel@tonic-gate if (!multibyte) {
3870Sstevel@tonic-gate *compilep = (unsigned char)
3880Sstevel@tonic-gate NOT_IN_ASCII_CHAR_CLASS;
3890Sstevel@tonic-gate } else {
3900Sstevel@tonic-gate *compilep = (unsigned char)
3910Sstevel@tonic-gate NOT_IN_MULTIBYTE_CHAR_CLASS;
3920Sstevel@tonic-gate }
3930Sstevel@tonic-gate /* leave space for <class_length> */
3940Sstevel@tonic-gate compilep += 2;
3950Sstevel@tonic-gate }
3960Sstevel@tonic-gate } else {
3970Sstevel@tonic-gate regexp += char_size;
3980Sstevel@tonic-gate if (!multibyte) {
3990Sstevel@tonic-gate *compilep = (unsigned char)
4000Sstevel@tonic-gate IN_ASCII_CHAR_CLASS;
4010Sstevel@tonic-gate } else {
4020Sstevel@tonic-gate *compilep = (unsigned char)
4030Sstevel@tonic-gate IN_MULTIBYTE_CHAR_CLASS;
4040Sstevel@tonic-gate }
4050Sstevel@tonic-gate /* leave space for <class_length> */
4060Sstevel@tonic-gate compilep += 2;
4070Sstevel@tonic-gate }
4080Sstevel@tonic-gate
4090Sstevel@tonic-gate /* COMPILE THE CLASS */
4100Sstevel@tonic-gate /*
4110Sstevel@tonic-gate * check for a leading right square bracket,
4120Sstevel@tonic-gate * which is allowed
4130Sstevel@tonic-gate */
4140Sstevel@tonic-gate
4150Sstevel@tonic-gate if (current_char == RIGHT_SQUARE_BRACKET) {
4160Sstevel@tonic-gate /*
4170Sstevel@tonic-gate * the leading RIGHT_SQUARE_BRACKET may
4180Sstevel@tonic-gate * be part of a character range
4190Sstevel@tonic-gate * expression like "[]-\]"
4200Sstevel@tonic-gate */
4210Sstevel@tonic-gate dash_indicates_range = B_TRUE;
4220Sstevel@tonic-gate first_char_in_range = current_char;
4230Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
4240Sstevel@tonic-gate if (char_size <= 0) {
4250Sstevel@tonic-gate ERROR_EXIT(®cmp_lock,
4260Sstevel@tonic-gate arg_listp, compile_startp);
4270Sstevel@tonic-gate } else {
4280Sstevel@tonic-gate regexp += char_size;
4290Sstevel@tonic-gate *compilep = RIGHT_SQUARE_BRACKET;
4300Sstevel@tonic-gate compilep++;
4310Sstevel@tonic-gate }
4320Sstevel@tonic-gate } else {
4330Sstevel@tonic-gate /*
4340Sstevel@tonic-gate * decode the character in the following
4350Sstevel@tonic-gate * while loop and decide then if it can
4360Sstevel@tonic-gate * be the first character
4370Sstevel@tonic-gate * in a character range expression
4380Sstevel@tonic-gate */
4390Sstevel@tonic-gate dash_indicates_range = B_FALSE;
4400Sstevel@tonic-gate }
4410Sstevel@tonic-gate
4420Sstevel@tonic-gate while (current_char != RIGHT_SQUARE_BRACKET) {
4430Sstevel@tonic-gate if (current_char != DASH) {
4440Sstevel@tonic-gate /*
4450Sstevel@tonic-gate * if a DASH follows current_char,
4460Sstevel@tonic-gate * current_char, the DASH and the
4470Sstevel@tonic-gate * character that follows the DASH
4480Sstevel@tonic-gate * may form a character range
4490Sstevel@tonic-gate * expression
4500Sstevel@tonic-gate */
4510Sstevel@tonic-gate dash_indicates_range = B_TRUE;
4520Sstevel@tonic-gate first_char_in_range = current_char;
4530Sstevel@tonic-gate expr_length = add_char(
4540Sstevel@tonic-gate compilep, current_char);
4550Sstevel@tonic-gate compilep += expr_length;
4560Sstevel@tonic-gate
4570Sstevel@tonic-gate } else if /* (current_char == DASH) && */
4580Sstevel@tonic-gate (dash_indicates_range == B_FALSE) {
4590Sstevel@tonic-gate /*
4600Sstevel@tonic-gate * current_char is a DASH, but
4610Sstevel@tonic-gate * either begins the entire
4620Sstevel@tonic-gate * character class or follows a
4630Sstevel@tonic-gate * character that's already
4640Sstevel@tonic-gate * part of a character range
4650Sstevel@tonic-gate * expression, so it simply
4660Sstevel@tonic-gate * represents the DASH character
4670Sstevel@tonic-gate * itself
4680Sstevel@tonic-gate */
4690Sstevel@tonic-gate *compilep = DASH;
4700Sstevel@tonic-gate compilep ++;
4710Sstevel@tonic-gate /*
4720Sstevel@tonic-gate * if another DASH follows this
4730Sstevel@tonic-gate * one, this DASH is part
4740Sstevel@tonic-gate * of a character range expression
4750Sstevel@tonic-gate * like "[--\]"
4760Sstevel@tonic-gate */
4770Sstevel@tonic-gate dash_indicates_range = B_TRUE;
4780Sstevel@tonic-gate first_char_in_range = current_char;
4790Sstevel@tonic-gate
4800Sstevel@tonic-gate } else /* ((current_char == DASH && */
4810Sstevel@tonic-gate /* (dash_indicates_range == B_TRUE)) */ {
4820Sstevel@tonic-gate /*
4830Sstevel@tonic-gate * the DASH appears after a single
4840Sstevel@tonic-gate * character that isn't
4850Sstevel@tonic-gate * already part of a character
4860Sstevel@tonic-gate * range expression, so it
4870Sstevel@tonic-gate * and the characters preceding
4880Sstevel@tonic-gate * and following it can form a
4890Sstevel@tonic-gate * character range expression
4900Sstevel@tonic-gate * like "[a-z]"
4910Sstevel@tonic-gate */
4920Sstevel@tonic-gate char_size = get_wchar(
4930Sstevel@tonic-gate ¤t_char, regexp);
4940Sstevel@tonic-gate if (char_size <= 0) {
4950Sstevel@tonic-gate ERROR_EXIT(®cmp_lock,
4960Sstevel@tonic-gate arg_listp, compile_startp);
4970Sstevel@tonic-gate
4980Sstevel@tonic-gate } else if (current_char ==
4990Sstevel@tonic-gate RIGHT_SQUARE_BRACKET) {
5000Sstevel@tonic-gate /*
5010Sstevel@tonic-gate * the preceding DASH is
5020Sstevel@tonic-gate * the last character in the
5030Sstevel@tonic-gate * class and represents the
5040Sstevel@tonic-gate * DASH character itself
5050Sstevel@tonic-gate */
5060Sstevel@tonic-gate *compilep = DASH;
5070Sstevel@tonic-gate compilep++;
5080Sstevel@tonic-gate
5090Sstevel@tonic-gate } else if (valid_range(
5100Sstevel@tonic-gate first_char_in_range,
5110Sstevel@tonic-gate current_char) == B_FALSE) {
5120Sstevel@tonic-gate
5130Sstevel@tonic-gate ERROR_EXIT(®cmp_lock,
5140Sstevel@tonic-gate arg_listp, compile_startp);
5150Sstevel@tonic-gate
5160Sstevel@tonic-gate } else {
5170Sstevel@tonic-gate /*
5180Sstevel@tonic-gate * the DASH is part of a
5190Sstevel@tonic-gate * character range
5200Sstevel@tonic-gate * expression; encode the
5210Sstevel@tonic-gate * rest of the expression
5220Sstevel@tonic-gate */
5230Sstevel@tonic-gate regexp += char_size;
5240Sstevel@tonic-gate *compilep = (unsigned char)
5250Sstevel@tonic-gate THRU;
5260Sstevel@tonic-gate compilep++;
5270Sstevel@tonic-gate expr_length = add_char(
5280Sstevel@tonic-gate compilep, current_char);
5290Sstevel@tonic-gate compilep += expr_length;
5300Sstevel@tonic-gate /*
5310Sstevel@tonic-gate * if a DASH follows this
5320Sstevel@tonic-gate * character range
5330Sstevel@tonic-gate * expression,
5340Sstevel@tonic-gate * it represents the DASH
5350Sstevel@tonic-gate * character itself
5360Sstevel@tonic-gate */
5370Sstevel@tonic-gate dash_indicates_range =
5380Sstevel@tonic-gate B_FALSE;
5390Sstevel@tonic-gate }
5400Sstevel@tonic-gate }
5410Sstevel@tonic-gate
5420Sstevel@tonic-gate /* GET THE NEXT CHARACTER */
5430Sstevel@tonic-gate
5440Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
5450Sstevel@tonic-gate if (char_size <= 0) {
5460Sstevel@tonic-gate ERROR_EXIT(®cmp_lock,
5470Sstevel@tonic-gate arg_listp, compile_startp);
5480Sstevel@tonic-gate } else {
5490Sstevel@tonic-gate regexp += char_size;
5500Sstevel@tonic-gate }
5510Sstevel@tonic-gate
5520Sstevel@tonic-gate }
5530Sstevel@tonic-gate /* end while (current_char != RIGHT_SQUARE_BRACKET) */
5540Sstevel@tonic-gate
5550Sstevel@tonic-gate /* INSERT THE LENGTH OF THE CLASS INTO THE */
5560Sstevel@tonic-gate /* COMPILED EXPRESSION */
5570Sstevel@tonic-gate
5580Sstevel@tonic-gate class_length = (unsigned int)
5590Sstevel@tonic-gate (compilep - regex_typep - 1);
5600Sstevel@tonic-gate if ((class_length < 2) ||
5610Sstevel@tonic-gate (class_length > MAX_SINGLE_BYTE_INT)) {
5620Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
5630Sstevel@tonic-gate compile_startp);
5640Sstevel@tonic-gate } else {
5650Sstevel@tonic-gate *(regex_typep + 1) = (unsigned char)
5660Sstevel@tonic-gate class_length;
5670Sstevel@tonic-gate }
5680Sstevel@tonic-gate break; /* end case LEFT_SQUARE_BRACKET */
5690Sstevel@tonic-gate
5700Sstevel@tonic-gate case LEFT_PAREN:
5710Sstevel@tonic-gate
5720Sstevel@tonic-gate /*
5730Sstevel@tonic-gate * start of a parenthesized group of regular
5740Sstevel@tonic-gate * expressions compiles to <'\0'><'\0'>, leaving
5750Sstevel@tonic-gate * space in the compiled regular expression for
5760Sstevel@tonic-gate * <group_type|ADDED_LENGTH_BITS><group_length>
5770Sstevel@tonic-gate */
5780Sstevel@tonic-gate
5790Sstevel@tonic-gate if (push_compilep(compilep) == (char *)0) {
5800Sstevel@tonic-gate /*
5810Sstevel@tonic-gate * groups can contain groups, so group
5820Sstevel@tonic-gate * start pointers
5830Sstevel@tonic-gate * must be saved and restored in sequence
5840Sstevel@tonic-gate */
5850Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
5860Sstevel@tonic-gate compile_startp);
5870Sstevel@tonic-gate } else {
5880Sstevel@tonic-gate can_repeat = B_FALSE;
5890Sstevel@tonic-gate *compilep = '\0'; /* for debugging */
5900Sstevel@tonic-gate compilep++;
5910Sstevel@tonic-gate *compilep = '\0'; /* for debugging */
5920Sstevel@tonic-gate compilep++;
5930Sstevel@tonic-gate }
5940Sstevel@tonic-gate break; /* end case LEFT_PAREN */
5950Sstevel@tonic-gate
5960Sstevel@tonic-gate case RIGHT_PAREN:
5970Sstevel@tonic-gate /* end of a marked group of regular expressions */
5980Sstevel@tonic-gate
5990Sstevel@tonic-gate /*
6000Sstevel@tonic-gate * (<regex>)$0-9 compiles to
6010Sstevel@tonic-gate * <SAVED_GROUP><substringn><compiled_regex...>\
6020Sstevel@tonic-gate * <END_SAVED_GROUP><substringn><return_arg_number>
6030Sstevel@tonic-gate * (<regex>)* compiles to
6040Sstevel@tonic-gate * <ZERO_OR_MORE_GROUP|ADDED_LENGTH_BITS>
6050Sstevel@tonic-gate * <group_length> <compiled_regex...>
6060Sstevel@tonic-gate * <END_GROUP|ZERO_OR_MORE><groupn>
6070Sstevel@tonic-gate * (<regex>)+ compiles to
6080Sstevel@tonic-gate * <ONE_OR_MORE_GROUP|ADDED_LENGTH_BITS>
6090Sstevel@tonic-gate * <group_length>\
6100Sstevel@tonic-gate * <compiled_regex...><END_GROUP|ONE_OR_MORE>
6110Sstevel@tonic-gate * <groupn>
6120Sstevel@tonic-gate * (<regex>){...} compiles to
6130Sstevel@tonic-gate * <COUNTED_GROUP|ADDED_LENGTH_BITS><group_length>\
6140Sstevel@tonic-gate * <compiled_regex...><END_GROUP|COUNT><groupn>\
6150Sstevel@tonic-gate * <minimum_repeat_count><maximum_repeat_count>
6160Sstevel@tonic-gate * otherwise (<regex>) compiles to
6170Sstevel@tonic-gate * <SIMPLE_GROUP><blank><compiled_regex...>
6180Sstevel@tonic-gate * <END_GROUP><groupn>
6190Sstevel@tonic-gate *
6200Sstevel@tonic-gate * NOTE:
6210Sstevel@tonic-gate *
6220Sstevel@tonic-gate * group_length + (256 * ADDED_LENGTH_BITS) ==
6230Sstevel@tonic-gate * length_of(<compiled_regex...><END_GROUP|...>
6240Sstevel@tonic-gate * <groupn>)
6250Sstevel@tonic-gate * which also ==
6260Sstevel@tonic-gate * length_of(<group_type|ADDED_LENGTH_BITS>
6270Sstevel@tonic-gate * <group_length>\ <compiled_regex...>)
6280Sstevel@tonic-gate * groupn no longer seems to be used, but the code
6290Sstevel@tonic-gate * still computes it to preserve backward
6300Sstevel@tonic-gate * compatibility
6310Sstevel@tonic-gate * with earlier versions of regex().
6320Sstevel@tonic-gate */
6330Sstevel@tonic-gate
6340Sstevel@tonic-gate /* RETRIEVE THE ADDRESS OF THE START OF THE GROUP */
6350Sstevel@tonic-gate
6360Sstevel@tonic-gate regex_typep = pop_compilep();
6370Sstevel@tonic-gate if (regex_typep == (char *)0) {
6380Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
6390Sstevel@tonic-gate compile_startp);
6400Sstevel@tonic-gate }
6410Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
6420Sstevel@tonic-gate if (char_size < 0) {
6430Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
6440Sstevel@tonic-gate compile_startp);
6450Sstevel@tonic-gate } else if (char_size == 0) {
6460Sstevel@tonic-gate *regex_typep = SIMPLE_GROUP;
6470Sstevel@tonic-gate can_repeat = B_TRUE;
6480Sstevel@tonic-gate *compilep = (unsigned char)END_GROUP;
6490Sstevel@tonic-gate regex_typep = compilep;
6500Sstevel@tonic-gate compilep++;
6510Sstevel@tonic-gate *compilep = (unsigned char)groupn;
6520Sstevel@tonic-gate groupn++;
6530Sstevel@tonic-gate compilep++;
6540Sstevel@tonic-gate } else if (current_char == DOLLAR_SIGN) {
6550Sstevel@tonic-gate *regex_typep = SAVED_GROUP;
6560Sstevel@tonic-gate regex_typep++;
6570Sstevel@tonic-gate *regex_typep = (char)substringn;
6580Sstevel@tonic-gate can_repeat = B_FALSE;
6590Sstevel@tonic-gate regexp ++;
6600Sstevel@tonic-gate return_arg_number = get_digit(regexp);
6610Sstevel@tonic-gate if ((return_arg_number < 0) ||
6620Sstevel@tonic-gate (substringn >= NSUBSTRINGS)) {
6630Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
6640Sstevel@tonic-gate compile_startp);
6650Sstevel@tonic-gate }
6660Sstevel@tonic-gate regexp++;
6670Sstevel@tonic-gate *compilep = (unsigned char)END_SAVED_GROUP;
6680Sstevel@tonic-gate compilep++;
6690Sstevel@tonic-gate *compilep = (unsigned char)substringn;
6700Sstevel@tonic-gate substringn++;
6710Sstevel@tonic-gate compilep++;
6720Sstevel@tonic-gate *compilep = (unsigned char)return_arg_number;
6730Sstevel@tonic-gate compilep++;
6740Sstevel@tonic-gate } else {
6750Sstevel@tonic-gate switch (current_char) {
6760Sstevel@tonic-gate case STAR:
6770Sstevel@tonic-gate *regex_typep = ZERO_OR_MORE_GROUP;
6780Sstevel@tonic-gate break;
6790Sstevel@tonic-gate case PLUS:
6800Sstevel@tonic-gate *regex_typep = ONE_OR_MORE_GROUP;
6810Sstevel@tonic-gate break;
6820Sstevel@tonic-gate case LEFT_CURLY_BRACE:
6830Sstevel@tonic-gate *regex_typep = COUNTED_GROUP;
6840Sstevel@tonic-gate break;
6850Sstevel@tonic-gate default:
6860Sstevel@tonic-gate *regex_typep = SIMPLE_GROUP;
6870Sstevel@tonic-gate }
6880Sstevel@tonic-gate if (*regex_typep != SIMPLE_GROUP) {
6890Sstevel@tonic-gate group_length = (unsigned int)
6900Sstevel@tonic-gate (compilep - regex_typep);
6910Sstevel@tonic-gate if (group_length >= 1024) {
6920Sstevel@tonic-gate ERROR_EXIT(®cmp_lock,
6930Sstevel@tonic-gate arg_listp, compile_startp);
6940Sstevel@tonic-gate }
6950Sstevel@tonic-gate high_bits = group_length >>
6960Sstevel@tonic-gate TIMES_256_SHIFT;
6970Sstevel@tonic-gate low_bits = group_length &
6980Sstevel@tonic-gate SINGLE_BYTE_MASK;
6990Sstevel@tonic-gate *regex_typep =
7000Sstevel@tonic-gate (unsigned char)
7010Sstevel@tonic-gate ((unsigned int)
7020Sstevel@tonic-gate *regex_typep | high_bits);
7030Sstevel@tonic-gate regex_typep++;
7040Sstevel@tonic-gate *regex_typep =
7050Sstevel@tonic-gate (unsigned char)low_bits;
7060Sstevel@tonic-gate }
7070Sstevel@tonic-gate can_repeat = B_TRUE;
7080Sstevel@tonic-gate *compilep = (unsigned char)END_GROUP;
7090Sstevel@tonic-gate regex_typep = compilep;
7100Sstevel@tonic-gate compilep++;
7110Sstevel@tonic-gate *compilep = (unsigned char)groupn;
7120Sstevel@tonic-gate groupn++;
7130Sstevel@tonic-gate compilep++;
7140Sstevel@tonic-gate }
7150Sstevel@tonic-gate
7160Sstevel@tonic-gate break; /* end case RIGHT_PAREN */
7170Sstevel@tonic-gate
7180Sstevel@tonic-gate case STAR: /* zero or more repetitions of the */
7190Sstevel@tonic-gate /* preceding expression */
7200Sstevel@tonic-gate
7210Sstevel@tonic-gate /*
7220Sstevel@tonic-gate * <regex...>* compiles to <regex_type|ZERO_OR_MORE>\
7230Sstevel@tonic-gate * <compiled_regex...>
7240Sstevel@tonic-gate * (<regex...>)* compiles to
7250Sstevel@tonic-gate * <ZERO_OR_MORE_GROUP|ADDED_LENGTH_BITS>\
7260Sstevel@tonic-gate * <group_length><compiled_regex...>\
7270Sstevel@tonic-gate * <END_GROUP|ZERO_OR_MORE><groupn>
7280Sstevel@tonic-gate */
7290Sstevel@tonic-gate
7300Sstevel@tonic-gate if (can_repeat == B_FALSE) {
7310Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
7320Sstevel@tonic-gate compile_startp);
7330Sstevel@tonic-gate } else {
7340Sstevel@tonic-gate can_repeat = B_FALSE;
7350Sstevel@tonic-gate *regex_typep = (unsigned char)
7360Sstevel@tonic-gate ((unsigned int)*regex_typep | ZERO_OR_MORE);
7370Sstevel@tonic-gate }
7380Sstevel@tonic-gate break; /* end case '*' */
7390Sstevel@tonic-gate
7400Sstevel@tonic-gate case PLUS:
7410Sstevel@tonic-gate /* one or more repetitions of the preceding */
7420Sstevel@tonic-gate /* expression */
7430Sstevel@tonic-gate
7440Sstevel@tonic-gate /*
7450Sstevel@tonic-gate * <regex...>+ compiles to <regex_type|ONE_OR_MORE>\
7460Sstevel@tonic-gate * <compiled_regex...> (<regex...>)+ compiles to
7470Sstevel@tonic-gate * <ONE_OR_MORE_GROUP|ADDED_LENGTH_BITS>\
7480Sstevel@tonic-gate * <group_length><compiled_regex...>\
7490Sstevel@tonic-gate * <END_GROUP|ONE_OR_MORE><groupn>
7500Sstevel@tonic-gate */
7510Sstevel@tonic-gate
7520Sstevel@tonic-gate if (can_repeat == B_FALSE) {
7530Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
7540Sstevel@tonic-gate compile_startp);
7550Sstevel@tonic-gate } else {
7560Sstevel@tonic-gate can_repeat = B_FALSE;
7570Sstevel@tonic-gate *regex_typep =
7580Sstevel@tonic-gate (unsigned char)((unsigned int)*
7590Sstevel@tonic-gate regex_typep | ONE_OR_MORE);
7600Sstevel@tonic-gate }
7610Sstevel@tonic-gate break; /* end case '+' */
7620Sstevel@tonic-gate
7630Sstevel@tonic-gate case LEFT_CURLY_BRACE:
7640Sstevel@tonic-gate
7650Sstevel@tonic-gate /*
7660Sstevel@tonic-gate * repeat the preceding regular expression
7670Sstevel@tonic-gate * at least min_count times
7680Sstevel@tonic-gate * and at most max_count times
7690Sstevel@tonic-gate *
7700Sstevel@tonic-gate * <regex...>{min_count} compiles to
7710Sstevel@tonic-gate * <regex type|COUNT><compiled_regex...>
7720Sstevel@tonic-gate * <min_count><min_count>
7730Sstevel@tonic-gate *
7740Sstevel@tonic-gate * <regex...>{min_count,} compiles to
7750Sstevel@tonic-gate * <regex type|COUNT><compiled_regex...>
7760Sstevel@tonic-gate * <min_count><UNLIMITED>
7770Sstevel@tonic-gate *
7780Sstevel@tonic-gate * <regex...>{min_count,max_count} compiles to
7790Sstevel@tonic-gate * <regex type>|COUNT><compiled_regex...>
7800Sstevel@tonic-gate * <min_count><max_count>
7810Sstevel@tonic-gate *
7820Sstevel@tonic-gate * (<regex...>){min_count,max_count} compiles to
7830Sstevel@tonic-gate * <COUNTED_GROUP|ADDED_LENGTH_BITS><group_length>\
7840Sstevel@tonic-gate * <compiled_regex...><END_GROUP|COUNT><groupn>\
7850Sstevel@tonic-gate * <minimum_match_count><maximum_match_count>
7860Sstevel@tonic-gate */
7870Sstevel@tonic-gate
7880Sstevel@tonic-gate if (can_repeat == B_FALSE) {
7890Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
7900Sstevel@tonic-gate compile_startp);
7910Sstevel@tonic-gate }
7920Sstevel@tonic-gate can_repeat = B_FALSE;
7930Sstevel@tonic-gate *regex_typep = (unsigned char)((unsigned int)*
7940Sstevel@tonic-gate regex_typep | COUNT);
7950Sstevel@tonic-gate count_length = get_count(&min_count, regexp);
7960Sstevel@tonic-gate if (count_length <= 0) {
7970Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
7980Sstevel@tonic-gate compile_startp);
7990Sstevel@tonic-gate }
8000Sstevel@tonic-gate regexp += count_length;
8010Sstevel@tonic-gate
8020Sstevel@tonic-gate if (*regexp == RIGHT_CURLY_BRACE) { /* {min_count} */
8030Sstevel@tonic-gate regexp++;
8040Sstevel@tonic-gate max_count = min_count;
8050Sstevel@tonic-gate } else if (*regexp == COMMA) { /* {min_count,..} */
8060Sstevel@tonic-gate regexp++;
8070Sstevel@tonic-gate /* {min_count,} */
8080Sstevel@tonic-gate if (*regexp == RIGHT_CURLY_BRACE) {
8090Sstevel@tonic-gate regexp++;
8100Sstevel@tonic-gate max_count = UNLIMITED;
8110Sstevel@tonic-gate } else { /* {min_count,max_count} */
8120Sstevel@tonic-gate count_length = get_count(
8130Sstevel@tonic-gate &max_count, regexp);
8140Sstevel@tonic-gate if (count_length <= 0) {
8150Sstevel@tonic-gate ERROR_EXIT(®cmp_lock,
8160Sstevel@tonic-gate arg_listp, compile_startp);
8170Sstevel@tonic-gate }
8180Sstevel@tonic-gate regexp += count_length;
8190Sstevel@tonic-gate if (*regexp != RIGHT_CURLY_BRACE) {
8200Sstevel@tonic-gate ERROR_EXIT(®cmp_lock,
8210Sstevel@tonic-gate arg_listp, compile_startp);
8220Sstevel@tonic-gate }
8230Sstevel@tonic-gate regexp++;
8240Sstevel@tonic-gate }
8250Sstevel@tonic-gate } else { /* invalid expression */
8260Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
8270Sstevel@tonic-gate compile_startp);
8280Sstevel@tonic-gate }
8290Sstevel@tonic-gate
8300Sstevel@tonic-gate if ((min_count > MAX_SINGLE_BYTE_INT) ||
8310Sstevel@tonic-gate ((max_count != UNLIMITED) &&
8320Sstevel@tonic-gate (min_count > max_count))) {
8330Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
8340Sstevel@tonic-gate compile_startp);
8350Sstevel@tonic-gate } else {
8360Sstevel@tonic-gate *compilep = (unsigned char)min_count;
8370Sstevel@tonic-gate compilep++;
8380Sstevel@tonic-gate *compilep = (unsigned char)max_count;
8390Sstevel@tonic-gate compilep++;
8400Sstevel@tonic-gate }
8410Sstevel@tonic-gate break; /* end case LEFT_CURLY_BRACE */
8420Sstevel@tonic-gate
8430Sstevel@tonic-gate default: /* a single non-special character */
8440Sstevel@tonic-gate
8450Sstevel@tonic-gate /*
8460Sstevel@tonic-gate * compiles to <ASCII_CHAR><ascii_char> or
8470Sstevel@tonic-gate * <MULTIBYTE_CHAR><multibyte_char>
8480Sstevel@tonic-gate */
8490Sstevel@tonic-gate
8500Sstevel@tonic-gate can_repeat = B_TRUE;
8510Sstevel@tonic-gate regex_typep = compilep;
8520Sstevel@tonic-gate expr_length = add_single_char_expr(compilep,
8530Sstevel@tonic-gate current_char);
8540Sstevel@tonic-gate compilep += expr_length;
8550Sstevel@tonic-gate
8560Sstevel@tonic-gate } /* end switch (current_char) */
8570Sstevel@tonic-gate
8580Sstevel@tonic-gate /* GET THE NEXT CHARACTER FOR THE WHILE LOOP */
8590Sstevel@tonic-gate
8600Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
8610Sstevel@tonic-gate if (char_size < 0) {
8620Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp, compile_startp);
8630Sstevel@tonic-gate } else if (char_size > 0) {
8640Sstevel@tonic-gate regexp += char_size;
8650Sstevel@tonic-gate } else if /* (char_size == 0) && */ (next_argp != (char *)0) {
8660Sstevel@tonic-gate regexp = next_argp;
8670Sstevel@tonic-gate next_argp = va_arg(arg_listp, /* const */ char *);
8680Sstevel@tonic-gate char_size = get_wchar(¤t_char, regexp);
8690Sstevel@tonic-gate if (char_size <= 0) {
8700Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
8710Sstevel@tonic-gate compile_startp);
8720Sstevel@tonic-gate } else {
8730Sstevel@tonic-gate regexp += char_size;
8740Sstevel@tonic-gate }
8750Sstevel@tonic-gate } else /* ((char_size == 0) && (next_argp == (char *)0)) */ {
8760Sstevel@tonic-gate if (pop_compilep() != (char *)0) {
8770Sstevel@tonic-gate /* unmatched parentheses */
8780Sstevel@tonic-gate ERROR_EXIT(®cmp_lock, arg_listp,
8790Sstevel@tonic-gate compile_startp);
8800Sstevel@tonic-gate }
8810Sstevel@tonic-gate *compilep = (unsigned char)END_REGEX;
8820Sstevel@tonic-gate compilep++;
8830Sstevel@tonic-gate *compilep = '\0';
8840Sstevel@tonic-gate compilep++;
8850Sstevel@tonic-gate __i_size = (int)(compilep - compile_startp);
8860Sstevel@tonic-gate va_end(arg_listp);
8870Sstevel@tonic-gate lmutex_unlock(®cmp_lock);
8880Sstevel@tonic-gate return (compile_startp);
8890Sstevel@tonic-gate }
8900Sstevel@tonic-gate } /* end for (;;) */
8910Sstevel@tonic-gate
8920Sstevel@tonic-gate } /* regcmp() */
8930Sstevel@tonic-gate
8940Sstevel@tonic-gate
8950Sstevel@tonic-gate /* DEFINITIONS OF PRIVATE FUNCTIONS */
8960Sstevel@tonic-gate
8970Sstevel@tonic-gate static int
add_char(char * compilep,wchar_t wchar)8980Sstevel@tonic-gate add_char(char *compilep, wchar_t wchar)
8990Sstevel@tonic-gate {
9000Sstevel@tonic-gate int expr_length;
9010Sstevel@tonic-gate
9020Sstevel@tonic-gate if ((unsigned int)wchar <= (unsigned int)0x7f) {
9030Sstevel@tonic-gate *compilep = (unsigned char)wchar;
9040Sstevel@tonic-gate expr_length = 1;
9050Sstevel@tonic-gate } else {
9060Sstevel@tonic-gate expr_length = wctomb(compilep, wchar);
9070Sstevel@tonic-gate }
9080Sstevel@tonic-gate return (expr_length);
9090Sstevel@tonic-gate }
9100Sstevel@tonic-gate
9110Sstevel@tonic-gate static int
add_single_char_expr(char * compilep,wchar_t wchar)9120Sstevel@tonic-gate add_single_char_expr(char *compilep, wchar_t wchar)
9130Sstevel@tonic-gate {
9140Sstevel@tonic-gate int expr_length = 0;
9150Sstevel@tonic-gate
9160Sstevel@tonic-gate if ((unsigned int)wchar <= (unsigned int)0x7f) {
9170Sstevel@tonic-gate *compilep = (unsigned char)ASCII_CHAR;
9180Sstevel@tonic-gate compilep++;
9190Sstevel@tonic-gate *compilep = (unsigned char)wchar;
9200Sstevel@tonic-gate expr_length += 2;
9210Sstevel@tonic-gate } else {
9220Sstevel@tonic-gate *compilep = (unsigned char)MULTIBYTE_CHAR;
9230Sstevel@tonic-gate compilep++;
9240Sstevel@tonic-gate expr_length++;
9250Sstevel@tonic-gate expr_length += wctomb(compilep, wchar);
9260Sstevel@tonic-gate }
9270Sstevel@tonic-gate return (expr_length);
9280Sstevel@tonic-gate }
9290Sstevel@tonic-gate
9300Sstevel@tonic-gate static int
get_count(int * countp,const char * regexp)9310Sstevel@tonic-gate get_count(int *countp, const char *regexp)
9320Sstevel@tonic-gate {
9330Sstevel@tonic-gate char count_char = '0';
9340Sstevel@tonic-gate int count = 0;
9350Sstevel@tonic-gate int count_length = 0;
9360Sstevel@tonic-gate
9370Sstevel@tonic-gate if (regexp == (char *)0) {
9380Sstevel@tonic-gate return ((int)0);
9390Sstevel@tonic-gate } else {
9400Sstevel@tonic-gate count_char = *regexp;
9410Sstevel@tonic-gate while (('0' <= count_char) && (count_char <= '9')) {
9420Sstevel@tonic-gate count = (10 * count) + (int)(count_char - '0');
9430Sstevel@tonic-gate count_length++;
9440Sstevel@tonic-gate regexp++;
9450Sstevel@tonic-gate count_char = *regexp;
9460Sstevel@tonic-gate }
9470Sstevel@tonic-gate }
9480Sstevel@tonic-gate *countp = count;
9490Sstevel@tonic-gate return (count_length);
9500Sstevel@tonic-gate }
9510Sstevel@tonic-gate
9520Sstevel@tonic-gate static int
get_digit(const char * regexp)9530Sstevel@tonic-gate get_digit(const char *regexp)
9540Sstevel@tonic-gate {
9550Sstevel@tonic-gate char digit;
9560Sstevel@tonic-gate
9570Sstevel@tonic-gate if (regexp == (char *)0) {
9580Sstevel@tonic-gate return ((int)-1);
9590Sstevel@tonic-gate } else {
9600Sstevel@tonic-gate digit = *regexp;
9610Sstevel@tonic-gate if (('0' <= digit) && (digit <= '9')) {
9620Sstevel@tonic-gate return ((int)(digit - '0'));
9630Sstevel@tonic-gate } else {
9640Sstevel@tonic-gate return ((int)-1);
9650Sstevel@tonic-gate }
9660Sstevel@tonic-gate }
9670Sstevel@tonic-gate }
9680Sstevel@tonic-gate
9690Sstevel@tonic-gate static int
get_wchar(wchar_t * wcharp,const char * regexp)9700Sstevel@tonic-gate get_wchar(wchar_t *wcharp, const char *regexp)
9710Sstevel@tonic-gate {
9720Sstevel@tonic-gate int char_size;
9730Sstevel@tonic-gate
9740Sstevel@tonic-gate if (regexp == (char *)0) {
9750Sstevel@tonic-gate char_size = 0;
9760Sstevel@tonic-gate *wcharp = (wchar_t)((unsigned int)'\0');
9770Sstevel@tonic-gate } else if (*regexp == '\0') {
9780Sstevel@tonic-gate char_size = 0;
9790Sstevel@tonic-gate *wcharp = (wchar_t)((unsigned int)*regexp);
9800Sstevel@tonic-gate } else if ((unsigned char)*regexp <= (unsigned char)0x7f) {
9810Sstevel@tonic-gate char_size = 1;
9820Sstevel@tonic-gate *wcharp = (wchar_t)((unsigned int)*regexp);
9830Sstevel@tonic-gate } else {
9840Sstevel@tonic-gate char_size = mbtowc(wcharp, regexp, MB_LEN_MAX);
9850Sstevel@tonic-gate }
9860Sstevel@tonic-gate return (char_size);
9870Sstevel@tonic-gate }
9880Sstevel@tonic-gate
9890Sstevel@tonic-gate static char *
pop_compilep(void)9900Sstevel@tonic-gate pop_compilep(void)
9910Sstevel@tonic-gate {
9920Sstevel@tonic-gate char *compilep;
9930Sstevel@tonic-gate
9940Sstevel@tonic-gate if (compilep_stackp >= &compilep_stack[STRINGP_STACK_SIZE]) {
9950Sstevel@tonic-gate return ((char *)0);
9960Sstevel@tonic-gate } else {
9970Sstevel@tonic-gate compilep = *compilep_stackp;
9980Sstevel@tonic-gate compilep_stackp++;
9990Sstevel@tonic-gate return (compilep);
10000Sstevel@tonic-gate }
10010Sstevel@tonic-gate }
10020Sstevel@tonic-gate
10030Sstevel@tonic-gate static char *
push_compilep(char * compilep)10040Sstevel@tonic-gate push_compilep(char *compilep)
10050Sstevel@tonic-gate {
10060Sstevel@tonic-gate if (compilep_stackp <= &compilep_stack[0]) {
10070Sstevel@tonic-gate return ((char *)0);
10080Sstevel@tonic-gate } else {
10090Sstevel@tonic-gate compilep_stackp--;
10100Sstevel@tonic-gate *compilep_stackp = compilep;
10110Sstevel@tonic-gate return (compilep);
10120Sstevel@tonic-gate }
10130Sstevel@tonic-gate }
10140Sstevel@tonic-gate
10150Sstevel@tonic-gate static boolean_t
valid_range(wchar_t lower_char,wchar_t upper_char)10160Sstevel@tonic-gate valid_range(wchar_t lower_char, wchar_t upper_char)
10170Sstevel@tonic-gate {
10180Sstevel@tonic-gate return (((lower_char <= 0x7f) && (upper_char <= 0x7f) &&
10190Sstevel@tonic-gate !iswcntrl(lower_char) && !iswcntrl(upper_char) &&
10200Sstevel@tonic-gate (lower_char < upper_char)) ||
10210Sstevel@tonic-gate (((lower_char & WCHAR_CSMASK) ==
10220Sstevel@tonic-gate (upper_char & WCHAR_CSMASK)) &&
10230Sstevel@tonic-gate (lower_char < upper_char)));
10240Sstevel@tonic-gate }
1025