Fix: lib: add NULL check for destroy_listeners in destroy_component_class
[babeltrace.git] / src / ctf-writer / utils.c
1 /*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
5 *
6 * Babeltrace CTF writer - Utilities
7 */
8
9 #define BT_LOG_TAG "CTF-WRITER/UTILS"
10 #include "logging.h"
11
12 #include <glib.h>
13 #include <stdlib.h>
14
15 #include <babeltrace2-ctf-writer/utils.h>
16 #include <babeltrace2-ctf-writer/object.h>
17
18 #include "common/assert.h"
19
20 #include "clock-class.h"
21 #include "field-types.h"
22
23 static
24 const char * const reserved_keywords_str[] = {"align", "callsite",
25 "const", "char", "clock", "double", "enum", "env", "event",
26 "floating_point", "float", "integer", "int", "long", "short", "signed",
27 "stream", "string", "struct", "trace", "typealias", "typedef",
28 "unsigned", "variant", "void", "_Bool", "_Complex", "_Imaginary"};
29
30 static GHashTable *reserved_keywords_set;
31 static int init_done;
32
33 static
34 void try_init_reserved_keywords(void)
35 {
36 size_t i;
37 const size_t reserved_keywords_count =
38 sizeof(reserved_keywords_str) / sizeof(char *);
39
40 if (reserved_keywords_set) {
41 return;
42 }
43
44 reserved_keywords_set = g_hash_table_new(g_direct_hash, g_direct_equal);
45 BT_ASSERT_DBG(reserved_keywords_set);
46
47 for (i = 0; i < reserved_keywords_count; i++) {
48 gpointer quark = GINT_TO_POINTER(g_quark_from_string(
49 reserved_keywords_str[i]));
50
51 g_hash_table_insert(reserved_keywords_set, quark, quark);
52 }
53
54 init_done = 1;
55 }
56
57 static __attribute__((destructor))
58 void trace_finalize(void)
59 {
60 if (reserved_keywords_set) {
61 g_hash_table_destroy(reserved_keywords_set);
62 }
63 }
64
65 bt_ctf_bool bt_ctf_identifier_is_valid(const char *identifier)
66 {
67 bt_ctf_bool is_valid = BT_CTF_TRUE;
68 char *string = NULL;
69 char *save_ptr, *token;
70
71 if (!identifier) {
72 BT_LOGT_STR("Invalid parameter: input string is NULL.");
73 is_valid = BT_CTF_FALSE;
74 goto end;
75 }
76
77 try_init_reserved_keywords();
78
79 if (identifier[0] == '\0') {
80 is_valid = BT_CTF_FALSE;
81 goto end;
82 }
83
84 string = strdup(identifier);
85 if (!string) {
86 BT_LOGE("strdup() failed.");
87 is_valid = BT_CTF_FALSE;
88 goto end;
89 }
90
91 token = strtok_r(string, " ", &save_ptr);
92 while (token) {
93 if (g_hash_table_lookup_extended(reserved_keywords_set,
94 GINT_TO_POINTER(g_quark_from_string(token)),
95 NULL, NULL)) {
96 is_valid = BT_CTF_FALSE;
97 goto end;
98 }
99
100 token = strtok_r(NULL, " ", &save_ptr);
101 }
102 end:
103 free(string);
104 return is_valid;
105 }
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