1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2016, Olivier MATZ <zer0@droids-corp.org>
12 #include <ecoli_malloc.h>
13 #include <ecoli_log.h>
14 #include <ecoli_test.h>
15 #include <ecoli_strvec.h>
16 #include <ecoli_node.h>
17 #include <ecoli_parsed.h>
18 #include <ecoli_node_many.h>
19 #include <ecoli_node_or.h>
20 #include <ecoli_node_str.h>
21 #include <ecoli_node_int.h>
22 #include <ecoli_node_re_lex.h>
24 EC_LOG_TYPE_REGISTER(node_re_lex);
26 struct regexp_pattern {
32 struct ec_node_re_lex {
34 struct ec_node *child;
35 struct regexp_pattern *table;
39 static struct ec_strvec *
40 tokenize(struct regexp_pattern *table, size_t table_len, const char *str)
42 struct ec_strvec *strvec = NULL;
60 for (i = 0; i < table_len; i++) {
61 ret = regexec(&table[i].r, &dup[off], 1, &pos, 0);
64 if (pos.rm_so != 0 || pos.rm_eo == 0) {
69 if (table[i].keep == 0)
72 c = dup[pos.rm_eo + off];
73 dup[pos.rm_eo + off] = '\0';
74 EC_LOG(EC_LOG_DEBUG, "re_lex match <%s>\n", &dup[off]);
75 if (ec_strvec_add(strvec, &dup[off]) < 0)
78 dup[pos.rm_eo + off] = c;
93 ec_strvec_free(strvec);
98 ec_node_re_lex_parse(const struct ec_node *gen_node,
99 struct ec_parsed *state,
100 const struct ec_strvec *strvec)
102 struct ec_node_re_lex *node = (struct ec_node_re_lex *)gen_node;
103 struct ec_strvec *new_vec = NULL;
104 struct ec_parsed *child_parsed;
108 if (ec_strvec_len(strvec) == 0) {
109 new_vec = ec_strvec();
111 str = ec_strvec_val(strvec, 0);
112 new_vec = tokenize(node->table, node->len, str);
114 if (new_vec == NULL) {
119 ret = ec_node_parse_child(node->child, state, new_vec);
123 if ((unsigned)ret == ec_strvec_len(new_vec)) {
125 } else if (ret != EC_PARSED_NOMATCH) {
126 child_parsed = ec_parsed_get_last_child(state);
127 ec_parsed_del_child(state, child_parsed);
128 ec_parsed_free(child_parsed);
129 ret = EC_PARSED_NOMATCH;
132 ec_strvec_free(new_vec);
138 ec_strvec_free(new_vec);
142 static void ec_node_re_lex_free_priv(struct ec_node *gen_node)
144 struct ec_node_re_lex *node = (struct ec_node_re_lex *)gen_node;
147 for (i = 0; i < node->len; i++) {
148 ec_free(node->table[i].pattern);
149 regfree(&node->table[i].r);
152 ec_free(node->table);
153 ec_node_free(node->child);
156 static struct ec_node_type ec_node_re_lex_type = {
158 .parse = ec_node_re_lex_parse,
159 //.complete = ec_node_re_lex_complete, //XXX
160 .size = sizeof(struct ec_node_re_lex),
161 .free_priv = ec_node_re_lex_free_priv,
164 EC_NODE_TYPE_REGISTER(ec_node_re_lex_type);
166 int ec_node_re_lex_add(struct ec_node *gen_node, const char *pattern, int keep)
168 struct ec_node_re_lex *node = (struct ec_node_re_lex *)gen_node;
169 struct regexp_pattern *table;
171 char *pat_dup = NULL;
174 pat_dup = ec_strdup(pattern);
179 table = ec_realloc(node->table, sizeof(*table) * (node->len + 1));
183 ret = regcomp(&table[node->len].r, pattern, REG_EXTENDED);
186 "Regular expression <%s> compilation failed: %d\n",
188 if (ret == REG_ESPACE)
196 table[node->len].pattern = pat_dup;
197 table[node->len].keep = keep;
208 struct ec_node *ec_node_re_lex(const char *id, struct ec_node *child)
210 struct ec_node_re_lex *node = NULL;
215 node = (struct ec_node_re_lex *)__ec_node(&ec_node_re_lex_type, id);
226 /* LCOV_EXCL_START */
227 static int ec_node_re_lex_testcase(void)
229 struct ec_node *node;
230 int ret, testres = 0;
232 node = ec_node_re_lex(EC_NO_ID,
233 ec_node_many(EC_NO_ID,
235 ec_node_str(EC_NO_ID, "foo"),
236 ec_node_str(EC_NO_ID, "bar"),
237 ec_node_int(EC_NO_ID, 0, 1000, 0)
242 EC_LOG(EC_LOG_ERR, "cannot create node\n");
246 ret = ec_node_re_lex_add(node, "[a-zA-Z]+", 1);
247 testres |= EC_TEST_CHECK(ret == 0, "cannot add regexp");
248 ret = ec_node_re_lex_add(node, "[0-9]+", 1);
249 testres |= EC_TEST_CHECK(ret == 0, "cannot add regexp");
250 ret = ec_node_re_lex_add(node, "=", 1);
251 testres |= EC_TEST_CHECK(ret == 0, "cannot add regexp");
252 ret = ec_node_re_lex_add(node, "-", 1);
253 testres |= EC_TEST_CHECK(ret == 0, "cannot add regexp");
254 ret = ec_node_re_lex_add(node, "\\+", 1);
255 testres |= EC_TEST_CHECK(ret == 0, "cannot add regexp");
256 ret = ec_node_re_lex_add(node, "[ ]+", 0);
257 testres |= EC_TEST_CHECK(ret == 0, "cannot add regexp");
259 EC_LOG(EC_LOG_ERR, "cannot add regexp to node\n");
264 testres |= EC_TEST_CHECK_PARSE(node, 1, " foo bar 324 bar234");
265 testres |= EC_TEST_CHECK_PARSE(node, 1, "foo bar324");
266 testres |= EC_TEST_CHECK_PARSE(node, 1, "");
267 testres |= EC_TEST_CHECK_PARSE(node, -1, "foobar");
275 static struct ec_test ec_node_re_lex_test = {
276 .name = "node_re_lex",
277 .test = ec_node_re_lex_testcase,
280 EC_TEST_REGISTER(ec_node_re_lex_test);