flt.utils.muxer: initialize variable to silence -Wmaybe-uninitialized warning
[babeltrace.git] / src / cli / babeltrace2-log-level.c
CommitLineData
ebddaeb8
SM
1/*
2 * Copyright 2019 Philippe Proulx <pproulx@efficios.com>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#define BT_LOG_TAG "CLI"
24#include "logging.h"
25
26#include "babeltrace2-log-level.h"
27
28#include <stdlib.h>
29
30#include "common/assert.h"
31
32/*
33 * Known environment variable names for the log levels of the project's
34 * modules.
35 */
36static const char* log_level_env_var_names[] = {
37 "BABELTRACE_PLUGIN_CTF_METADATA_LOG_LEVEL",
38 "BABELTRACE_PYTHON_BT2_LOG_LEVEL",
39 NULL,
40};
41
42static const int babeltrace2_default_log_level = BT_LOG_WARNING;
43
44void set_auto_log_levels(int *logging_level)
45{
46 const char **env_var_name;
47
48 /* Setting this is equivalent to passing --debug. */
49 if (getenv("BABELTRACE_DEBUG") &&
50 strcmp(getenv("BABELTRACE_DEBUG"), "1") == 0) {
51 *logging_level = logging_level_min(*logging_level, BT_LOG_TRACE);
52 }
53
54 /* Setting this is equivalent to passing --verbose. */
55 if (getenv("BABELTRACE_VERBOSE") &&
56 strcmp(getenv("BABELTRACE_VERBOSE"), "1") == 0) {
57 *logging_level = logging_level_min(*logging_level, BT_LOG_INFO);
58 }
59
60 /*
61 * logging_level is BT_LOG_NONE at this point if no log level was
62 * specified at all by the user.
63 */
64 if (*logging_level == -1) {
65 *logging_level = babeltrace2_default_log_level;
66 }
67
68 /*
69 * If the user hasn't requested a specific log level for the lib
70 * (through LIBBABELTRACE2_INIT_LOG_LEVEL), set it.
71 */
72 if (!getenv("LIBBABELTRACE2_INIT_LOG_LEVEL")) {
73 bt_logging_set_global_level(*logging_level);
74 }
75
76 /*
77 * If the user hasn't requested a specific log level for the CLI,
78 * (through BABELTRACE_CLI_LOG_LEVEL), set it.
79 */
80 if (!getenv(ENV_BABELTRACE_CLI_LOG_LEVEL)) {
81 bt_cli_log_level = *logging_level;
82 }
83
84 for (env_var_name = log_level_env_var_names; *env_var_name; env_var_name++) {
85 if (!getenv(*env_var_name)) {
86 char val[2] = { 0 };
87
88 /*
89 * Set module's default log level if not
90 * explicitly specified.
91 */
92 val[0] = bt_log_get_letter_from_level(*logging_level);
93 g_setenv(*env_var_name, val, 1);
94 }
95 }
96}
This page took 0.03924 seconds and 4 git commands to generate.