+/*
+ * ircd-ratbox: A slightly useful ircd.
+ * irc_string.h: A header for the ircd string functions.
+ *
+ * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
+ * Copyright (C) 1996-2002 Hybrid Development Team
+ * Copyright (C) 2002-2004 ircd-ratbox development team
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ *
+ * $Id: irc_string.h 3538 2007-07-26 14:21:57Z jilles $
+ */
+
+#ifndef INCLUDED_match_h
+#define INCLUDED_match_h
+
+#include "setup.h"
+#include "ircd_defs.h"
+
+/*
+ * match - compare name with mask, mask may contain * and ? as wildcards
+ * match - returns 1 on successful match, 0 otherwise
+ *
+ * mask_match - compare one mask to another
+ * match_esc - compare with support for escaping chars
+ * match_cidr - compares u!h@addr with u!h@addr/cidr
+ * match_ips - compares addr with addr/cidr in ascii form
+ */
+extern int match(const char *mask, const char *name);
+extern int mask_match(const char *oldmask, const char *newmask);
+extern int match_esc(const char *mask, const char *name);
+extern int match_cidr(const char *mask, const char *name);
+extern int match_ips(const char *mask, const char *name);
+
+/*
+ * comp_with_mask - compares to IP address
+ */
+int comp_with_mask(void *addr, void *dest, u_int mask);
+int comp_with_mask_sock(struct sockaddr *addr, struct sockaddr *dest, u_int mask);
+
+/*
+ * collapse - collapse a string in place, converts multiple adjacent *'s
+ * into a single *.
+ * collapse - modifies the contents of pattern
+ *
+ * collapse_esc() - collapse with support for escaping chars
+ */
+extern char *collapse(char *pattern);
+extern char *collapse_esc(char *pattern);
+
+/*
+ * irccmp - case insensitive comparison of s1 and s2
+ */
+extern int irccmp(const char *s1, const char *s2);
+/*
+ * ircncmp - counted case insensitive comparison of s1 and s2
+ */
+extern int ircncmp(const char *s1, const char *s2, int n);
+/*
+** canonize - reduce a string of duplicate list entries to contain
+** only the unique items.
+*/
+#ifdef NO_DUPE_MULTI_MESSAGES
+extern char *canonize(char *);
+#endif
+
+#define EmptyString(x) ((x) == NULL || *(x) == '\0')
+#define CheckEmpty(x) EmptyString(x) ? "" : x
+
+/*
+ * character macros
+ */
+extern const unsigned char ToLowerTab[];
+#define ToLower(c) (ToLowerTab[(unsigned char)(c)])
+
+extern const unsigned char ToUpperTab[];
+#define ToUpper(c) (ToUpperTab[(unsigned char)(c)])
+
+extern const unsigned int CharAttrs[];
+
+#define PRINT_C 0x001
+#define CNTRL_C 0x002
+#define ALPHA_C 0x004
+#define PUNCT_C 0x008
+#define DIGIT_C 0x010
+#define SPACE_C 0x020
+#define NICK_C 0x040
+#define CHAN_C 0x080
+#define KWILD_C 0x100
+#define CHANPFX_C 0x200
+#define USER_C 0x400
+#define HOST_C 0x800
+#define NONEOS_C 0x1000
+#define SERV_C 0x2000
+#define EOL_C 0x4000
+#define MWILD_C 0x8000
+#define LET_C 0x10000 /* an actual letter */
+#define FCHAN_C 0x20000 /* a 'fake' channel char */
+
+#define IsHostChar(c) (CharAttrs[(unsigned char)(c)] & HOST_C)
+#define IsUserChar(c) (CharAttrs[(unsigned char)(c)] & USER_C)
+#define IsChanPrefix(c) (CharAttrs[(unsigned char)(c)] & CHANPFX_C)
+#define IsChanChar(c) (CharAttrs[(unsigned char)(c)] & CHAN_C)
+#define IsFakeChanChar(c) (CharAttrs[(unsigned char)(c)] & FCHAN_C)
+#define IsKWildChar(c) (CharAttrs[(unsigned char)(c)] & KWILD_C)
+#define IsMWildChar(c) (CharAttrs[(unsigned char)(c)] & MWILD_C)
+#define IsNickChar(c) (CharAttrs[(unsigned char)(c)] & NICK_C)
+#define IsServChar(c) (CharAttrs[(unsigned char)(c)] & (NICK_C | SERV_C))
+#define IsIdChar(c) (CharAttrs[(unsigned char)(c)] & (DIGIT_C | LET_C))
+#define IsLetter(c) (CharAttrs[(unsigned char)(c)] & LET_C)
+#define IsCntrl(c) (CharAttrs[(unsigned char)(c)] & CNTRL_C)
+#define IsAlpha(c) (CharAttrs[(unsigned char)(c)] & ALPHA_C)
+#define IsSpace(c) (CharAttrs[(unsigned char)(c)] & SPACE_C)
+#define IsLower(c) (IsAlpha((c)) && ((unsigned char)(c) > 0x5f))
+#define IsUpper(c) (IsAlpha((c)) && ((unsigned char)(c) < 0x60))
+#define IsDigit(c) (CharAttrs[(unsigned char)(c)] & DIGIT_C)
+#define IsXDigit(c) (IsDigit(c) || ('a' <= (c) && (c) <= 'f') || \
+ ('A' <= (c) && (c) <= 'F'))
+#define IsAlNum(c) (CharAttrs[(unsigned char)(c)] & (DIGIT_C | ALPHA_C))
+#define IsPrint(c) (CharAttrs[(unsigned char)(c)] & PRINT_C)
+#define IsAscii(c) ((unsigned char)(c) < 0x80)
+#define IsGraph(c) (IsPrint((c)) && ((unsigned char)(c) != 0x32))
+#define IsPunct(c) (!(CharAttrs[(unsigned char)(c)] & \
+ (CNTRL_C | ALPHA_C | DIGIT_C)))
+
+#define IsNonEOS(c) (CharAttrs[(unsigned char)(c)] & NONEOS_C)
+#define IsEol(c) (CharAttrs[(unsigned char)(c)] & EOL_C)
+
+#endif /* INCLUDED_match_h */