2 * Copyright © 2015 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
26 #include "main/macros.h"
31 parse_debug_string(const char *debug
,
32 const struct debug_control
*control
)
37 for (; control
->string
!= NULL
; control
++) {
38 if (!strcmp(debug
, "all")) {
39 flag
|= control
->flag
;
42 const char *s
= debug
;
45 for (; n
= strcspn(s
, ", "), *s
; s
+= MAX2(1, n
)) {
46 if (strlen(control
->string
) == n
&&
47 !strncmp(control
->string
, s
, n
))
48 flag
|= control
->flag
;
58 comma_separated_list_contains(const char *list
, const char *s
)
61 const size_t len
= strlen(s
);
63 for (unsigned n
; n
= strcspn(list
, ","), *list
; list
+= MAX2(1, n
)) {
64 if (n
== len
&& !strncmp(list
, s
, n
))
72 * Reads an environment variable and interprets its value as a boolean.
74 * Recognizes 0/false/no and 1/true/yes. Other values result in the default value.
77 env_var_as_boolean(const char *var_name
, bool default_value
)
79 const char *str
= getenv(var_name
);
83 if (strcmp(str
, "1") == 0 ||
84 strcasecmp(str
, "true") == 0 ||
85 strcasecmp(str
, "y") == 0 ||
86 strcasecmp(str
, "yes") == 0) {
88 } else if (strcmp(str
, "0") == 0 ||
89 strcasecmp(str
, "false") == 0 ||
90 strcasecmp(str
, "n") == 0 ||
91 strcasecmp(str
, "no") == 0) {
99 * Reads an environment variable and interprets its value as a unsigned.
102 env_var_as_unsigned(const char *var_name
, unsigned default_value
)
104 char *str
= getenv(var_name
);
107 unsigned long result
;
110 result
= strtoul(str
, &end
, 0);
111 if (errno
== 0 && end
!= str
&& *end
== '\0')
114 return default_value
;