add meson support

[protos/libecoli.git] / src / ecoli_node_re.c

diff --git a/src/ecoli_node_re.c b/src/ecoli_node_re.c
new file mode 100644 (file)
index 0000000..69f352c
--- /dev/null
+++ b/src/ecoli_node_re.c
@@ -0,0 +1,203 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2016, Olivier MATZ <zer0@droids-corp.org>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <regex.h>
+
+#include <ecoli_log.h>
+#include <ecoli_malloc.h>
+#include <ecoli_test.h>
+#include <ecoli_strvec.h>
+#include <ecoli_node.h>
+#include <ecoli_parse.h>
+#include <ecoli_complete.h>
+#include <ecoli_config.h>
+#include <ecoli_node_re.h>
+
+EC_LOG_TYPE_REGISTER(node_re);
+
+struct ec_node_re {
+       struct ec_node gen;
+       char *re_str;
+       regex_t re;
+};
+
+static int
+ec_node_re_parse(const struct ec_node *gen_node,
+               struct ec_parse *state,
+               const struct ec_strvec *strvec)
+{
+       struct ec_node_re *node = (struct ec_node_re *)gen_node;
+       const char *str;
+       regmatch_t pos;
+
+       (void)state;
+
+       if (ec_strvec_len(strvec) == 0)
+               return EC_PARSE_NOMATCH;
+
+       str = ec_strvec_val(strvec, 0);
+       if (regexec(&node->re, str, 1, &pos, 0) != 0)
+               return EC_PARSE_NOMATCH;
+       if (pos.rm_so != 0 || pos.rm_eo != (int)strlen(str))
+               return EC_PARSE_NOMATCH;
+
+       return 1;
+}
+
+static void ec_node_re_free_priv(struct ec_node *gen_node)
+{
+       struct ec_node_re *node = (struct ec_node_re *)gen_node;
+
+       if (node->re_str != NULL) {
+               ec_free(node->re_str);
+               regfree(&node->re);
+       }
+}
+
+static const struct ec_config_schema ec_node_re_schema[] = {
+       {
+               .key = "pattern",
+               .desc = "The pattern to match.",
+               .type = EC_CONFIG_TYPE_STRING,
+       },
+       {
+               .type = EC_CONFIG_TYPE_NONE,
+       },
+};
+
+static int ec_node_re_set_config(struct ec_node *gen_node,
+                               const struct ec_config *config)
+{
+       struct ec_node_re *node = (struct ec_node_re *)gen_node;
+       const struct ec_config *value = NULL;
+       char *s = NULL;
+       regex_t re;
+       int ret;
+
+       value = ec_config_dict_get(config, "pattern");
+       if (value == NULL) {
+               errno = EINVAL;
+               goto fail;
+       }
+
+       s = ec_strdup(value->string);
+       if (s == NULL)
+               goto fail;
+
+       ret = regcomp(&re, s, REG_EXTENDED);
+       if (ret != 0) {
+               if (ret == REG_ESPACE)
+                       errno = ENOMEM;
+               else
+                       errno = EINVAL;
+               goto fail;
+       }
+
+       if (node->re_str != NULL) {
+               ec_free(node->re_str);
+               regfree(&node->re);
+       }
+       node->re_str = s;
+       node->re = re;
+
+       return 0;
+
+fail:
+       ec_free(s);
+       return -1;
+}
+
+static struct ec_node_type ec_node_re_type = {
+       .name = "re",
+       .schema = ec_node_re_schema,
+       .set_config = ec_node_re_set_config,
+       .parse = ec_node_re_parse,
+       .complete = ec_node_complete_unknown,
+       .size = sizeof(struct ec_node_re),
+       .free_priv = ec_node_re_free_priv,
+};
+
+EC_NODE_TYPE_REGISTER(ec_node_re_type);
+
+int ec_node_re_set_regexp(struct ec_node *gen_node, const char *str)
+{
+       struct ec_config *config = NULL;
+       int ret;
+
+       EC_CHECK_ARG(str != NULL, -1, EINVAL);
+
+       if (ec_node_check_type(gen_node, &ec_node_re_type) < 0)
+               goto fail;
+
+       config = ec_config_dict();
+       if (config == NULL)
+               goto fail;
+
+       ret = ec_config_dict_set(config, "pattern", ec_config_string(str));
+       if (ret < 0)
+               goto fail;
+
+       ret = ec_node_set_config(gen_node, config);
+       config = NULL;
+       if (ret < 0)
+               goto fail;
+
+       return 0;
+
+fail:
+       ec_config_free(config);
+       return -1;
+}
+
+struct ec_node *ec_node_re(const char *id, const char *re_str)
+{
+       struct ec_node *gen_node = NULL;
+
+       gen_node = ec_node_from_type(&ec_node_re_type, id);
+       if (gen_node == NULL)
+               goto fail;
+
+       if (ec_node_re_set_regexp(gen_node, re_str) < 0)
+               goto fail;
+
+       return gen_node;
+
+fail:
+       ec_node_free(gen_node);
+       return NULL;
+}
+
+/* LCOV_EXCL_START */
+static int ec_node_re_testcase(void)
+{
+       struct ec_node *node;
+       int testres = 0;
+
+       node = ec_node_re(EC_NO_ID, "fo+|bar");
+       if (node == NULL) {
+               EC_LOG(EC_LOG_ERR, "cannot create node\n");
+               return -1;
+       }
+       testres |= EC_TEST_CHECK_PARSE(node, 1, "foo");
+       testres |= EC_TEST_CHECK_PARSE(node, 1, "foo", "bar");
+       testres |= EC_TEST_CHECK_PARSE(node, 1, "bar");
+       testres |= EC_TEST_CHECK_PARSE(node, -1, "foobar");
+       testres |= EC_TEST_CHECK_PARSE(node, -1, " foo");
+       testres |= EC_TEST_CHECK_PARSE(node, -1, "");
+       ec_node_free(node);
+
+       return testres;
+}
+/* LCOV_EXCL_STOP */
+
+static struct ec_test ec_node_re_test = {
+       .name = "node_re",
+       .test = ec_node_re_testcase,
+};
+
+EC_TEST_REGISTER(ec_node_re_test);