SoW-2019-0002: Dynamic Snapshot
[lttng-tools.git] / src / common / filter / filter-visitor-ir-normalize-glob-patterns.c
1 /*
2 * filter-visitor-ir-normalize-glob-patterns.c
3 *
4 * LTTng filter IR normalize string
5 *
6 * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
7 *
8 * SPDX-License-Identifier: LGPL-2.1-only
9 *
10 */
11
12 #include <stdio.h>
13 #include <unistd.h>
14 #include <string.h>
15 #include <stdlib.h>
16 #include <assert.h>
17 #include <errno.h>
18 #include <inttypes.h>
19
20 #include <common/macros.h>
21 #include <common/string-utils/string-utils.h>
22
23 #include "filter-ast.h"
24 #include "filter-parser.h"
25 #include "filter-ir.h"
26
27 static
28 int normalize_glob_patterns(struct ir_op *node)
29 {
30 switch (node->op) {
31 case IR_OP_UNKNOWN:
32 default:
33 fprintf(stderr, "[error] %s: unknown op type\n", __func__);
34 return -EINVAL;
35
36 case IR_OP_ROOT:
37 return normalize_glob_patterns(node->u.root.child);
38 case IR_OP_LOAD:
39 {
40 if (node->data_type == IR_DATA_STRING) {
41 enum ir_load_string_type type =
42 node->u.load.u.string.type;
43 if (type == IR_LOAD_STRING_TYPE_GLOB_STAR_END ||
44 type == IR_LOAD_STRING_TYPE_GLOB_STAR) {
45 assert(node->u.load.u.string.value);
46 strutils_normalize_star_glob_pattern(
47 node->u.load.u.string.value);
48 }
49 }
50
51 return 0;
52 }
53 case IR_OP_UNARY:
54 return normalize_glob_patterns(node->u.unary.child);
55 case IR_OP_BINARY:
56 {
57 int ret = normalize_glob_patterns(node->u.binary.left);
58
59 if (ret)
60 return ret;
61 return normalize_glob_patterns(node->u.binary.right);
62 }
63 case IR_OP_LOGICAL:
64 {
65 int ret;
66
67 ret = normalize_glob_patterns(node->u.logical.left);
68 if (ret)
69 return ret;
70 return normalize_glob_patterns(node->u.logical.right);
71 }
72 }
73 }
74
75 /*
76 * This function normalizes all the globbing literal strings with
77 * utils_normalize_glob_pattern(). See the documentation of
78 * utils_normalize_glob_pattern() for more details.
79 */
80 LTTNG_HIDDEN
81 int filter_visitor_ir_normalize_glob_patterns(struct filter_parser_ctx *ctx)
82 {
83 return normalize_glob_patterns(ctx->ir_root);
84 }
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