2 * Copyright (c) 1995, the EUROPAGATE consortium (see below).
4 * The EUROPAGATE consortium members are:
6 * University College Dublin
7 * Danmarks Teknologiske Videnscenter
8 * An Chomhairle Leabharlanna
9 * Consejo Superior de Investigaciones Cientificas
11 * Permission to use, copy, modify, distribute, and sell this software and
12 * its documentation, in whole or in part, for any purpose, is hereby granted,
15 * 1. This copyright and permission notice appear in all copies of the
16 * software and its documentation. Notices of copyright or attribution
17 * which appear at the beginning of any file must remain unchanged.
19 * 2. The names of EUROPAGATE or the project partners may not be used to
20 * endorse or promote products derived from this software without specific
21 * prior written permission.
23 * 3. Users of this software (implementors and gateway operators) agree to
24 * inform the EUROPAGATE consortium of their use of the software. This
25 * information will be used to evaluate the EUROPAGATE project and the
26 * software, and to plan further developments. The consortium may use
27 * the information in later publications.
29 * 4. Users of this software agree to make their best efforts, when
30 * documenting their use of the software, to acknowledge the EUROPAGATE
31 * consortium, and the role played by the software in their work.
33 * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
34 * EXPRESS, IMPLIED, OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
35 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
36 * IN NO EVENT SHALL THE EUROPAGATE CONSORTIUM OR ITS MEMBERS BE LIABLE
37 * FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF
38 * ANY KIND, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
39 * OR PROFITS, WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND
40 * ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
41 * USE OR PERFORMANCE OF THIS SOFTWARE.
44 /* CCL - lexical analysis
47 * $Log: ccltoken.c,v $
48 * Revision 1.8 1997-09-29 08:56:38 adam
49 * Changed CCL parser to be thread safe. New type, CCL_parser, declared
50 * and a create/destructers ccl_parser_create/ccl_parser/destory has
53 * Revision 1.7 1997/09/01 08:48:12 adam
54 * New windows NT/95 port using MSV5.0. Only a few changes made
57 * Revision 1.6 1997/04/30 08:52:07 quinn
60 * Revision 1.5 1996/10/11 15:00:26 adam
61 * CCL parser from Europagate Email gateway 1.0.
63 * Revision 1.10 1995/07/11 12:28:31 adam
64 * New function: ccl_token_simple (split into simple tokens) and
65 * ccl_token_del (delete tokens).
67 * Revision 1.9 1995/05/16 09:39:28 adam
70 * Revision 1.8 1995/05/11 14:03:57 adam
71 * Changes in the reading of qualifier(s). New function: ccl_qual_fitem.
72 * New variable ccl_case_sensitive, which controls whether reserved
73 * words and field names are case sensitive or not.
75 * Revision 1.7 1995/04/19 12:11:24 adam
78 * Revision 1.6 1995/04/17 09:31:48 adam
79 * Improved handling of qualifiers. Aliases or reserved words.
81 * Revision 1.5 1995/02/23 08:32:00 adam
84 * Revision 1.3 1995/02/15 17:42:16 adam
85 * Minor changes of the api of this module. FILE* argument added
88 * Revision 1.2 1995/02/14 19:55:13 adam
89 * Header files ccl.h/cclp.h are gone! They have been merged an
90 * moved to ../include/ccl.h.
91 * Node kind(s) in ccl_rpn_node have changed names.
93 * Revision 1.1 1995/02/13 12:35:21 adam
94 * First version of CCL. Qualifiers aren't handled yet.
106 * token_cmp: Compare token with keyword(s)
107 * kw: Keyword list. Each keyword is separated by space.
109 * return: 1 if token string matches one of the keywords in list;
112 static int token_cmp (CCL_parser cclp, const char *kw, struct ccl_token *token)
114 const char *cp1 = kw;
118 while ((cp2 = strchr (cp1, ' ')))
120 if (token->len == (size_t) (cp2-cp1))
121 if (cclp->ccl_case_sensitive)
123 if (!memcmp (cp1, token->name, token->len))
128 if (!ccl_memicmp (cp1, token->name, token->len))
133 if (cclp->ccl_case_sensitive)
134 return token->len == strlen(cp1)
135 && !memcmp (cp1, token->name, token->len);
136 return token->len == strlen(cp1) &&
137 !ccl_memicmp (cp1, token->name, token->len);
141 * ccl_token_simple: tokenize CCL raw tokens
143 struct ccl_token *ccl_token_simple (const char *command)
145 const char *cp = command;
146 struct ccl_token *first = NULL;
147 struct ccl_token *last = NULL;
151 while (*cp && strchr (" \t\r\n", *cp))
158 first = last = malloc (sizeof (*first));
164 last->next = malloc (sizeof(*first));
166 last->next->prev = last;
175 last->kind = CCL_TOK_EOL;
178 last->kind = CCL_TOK_TERM;
181 while (*cp && *cp != '\"')
190 while (*cp && !strchr (" \t\n\r", *cp))
195 last->kind = CCL_TOK_TERM;
203 * ccl_tokenize: tokenize CCL command string.
204 * return: CCL token list.
206 struct ccl_token *ccl_parser_tokenize (CCL_parser cclp, const char *command)
208 const char *cp = command;
209 struct ccl_token *first = NULL;
210 struct ccl_token *last = NULL;
214 while (*cp && strchr (" \t\r\n", *cp))
221 first = last = malloc (sizeof (*first));
227 last->next = malloc (sizeof(*first));
229 last->next->prev = last;
238 last->kind = CCL_TOK_EOL;
241 last->kind = CCL_TOK_LP;
244 last->kind = CCL_TOK_RP;
247 last->kind = CCL_TOK_COMMA;
251 last->kind = CCL_TOK_PROX;
252 while (*cp == '%' || *cp == '!')
261 if (*cp == '=' || *cp == '<' || *cp == '>')
264 last->kind = CCL_TOK_REL;
267 else if (cp[-1] == '=')
268 last->kind = CCL_TOK_EQ;
270 last->kind = CCL_TOK_REL;
273 last->kind = CCL_TOK_MINUS;
276 last->kind = CCL_TOK_TERM;
279 while (*cp && *cp != '\"')
288 while (*cp && !strchr ("(),%!><=- \t\n\r", *cp))
293 if (token_cmp (cclp, cclp->ccl_token_and, last))
294 last->kind = CCL_TOK_AND;
295 else if (token_cmp (cclp, cclp->ccl_token_or, last))
296 last->kind = CCL_TOK_OR;
297 else if (token_cmp (cclp, cclp->ccl_token_not, last))
298 last->kind = CCL_TOK_NOT;
299 else if (token_cmp (cclp, cclp->ccl_token_set, last))
300 last->kind = CCL_TOK_SET;
302 last->kind = CCL_TOK_TERM;
308 struct ccl_token *ccl_tokenize (const char *command)
310 CCL_parser cclp = ccl_parser_create ();
311 struct ccl_token *list;
313 list = ccl_parser_tokenize (cclp, command);
315 ccl_parser_destroy (cclp);
320 * ccl_token_del: delete CCL tokens
322 void ccl_token_del (struct ccl_token *list)
324 struct ccl_token *list1;
334 CCL_parser ccl_parser_create (void)
336 CCL_parser p = malloc (sizeof(*p));
339 p->look_token = NULL;
344 p->ccl_token_and = "and";
345 p->ccl_token_or = "or";
346 p->ccl_token_not = "not andnot";
347 p->ccl_token_set = "set";
348 p->ccl_case_sensitive = 1;
353 void ccl_parser_destroy (CCL_parser p)