/* * Copyright © 2015 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include <errno.h> #include <string.h> #include "main/macros.h" #include "debug.h" uint64_t parse_debug_string(const char *debug, const struct debug_control *control) { uint64_t flag = 0; if (debug != NULL) { for (; control->string != NULL; control++) { if (!strcmp(debug, "all")) { flag |= control->flag; } else { const char *s = debug; unsigned n; for (; n = strcspn(s, ", "), *s; s += MAX2(1, n)) { if (strlen(control->string) == n && !strncmp(control->string, s, n)) flag |= control->flag; } } } } return flag; } bool comma_separated_list_contains(const char *list, const char *s) { assert(list); const size_t len = strlen(s); for (unsigned n; n = strcspn(list, ","), *list; list += MAX2(1, n)) { if (n == len && !strncmp(list, s, n)) return true; } return false; } /** * Reads an environment variable and interprets its value as a boolean. * * Recognizes 0/false/no and 1/true/yes. Other values result in the default value. */ bool env_var_as_boolean(const char *var_name, bool default_value) { const char *str = getenv(var_name); if (str == NULL) return default_value; if (strcmp(str, "1") == 0 || strcasecmp(str, "true") == 0 || strcasecmp(str, "yes") == 0) { return true; } else if (strcmp(str, "0") == 0 || strcasecmp(str, "false") == 0 || strcasecmp(str, "no") == 0) { return false; } else { return default_value; } } /** * Reads an environment variable and interprets its value as a unsigned. */ unsigned env_var_as_unsigned(const char *var_name, unsigned default_value) { char *str = getenv(var_name); if (str) { char *end; unsigned long result; errno = 0; result = strtoul(str, &end, 0); if (errno == 0 && end != str && *end == '\0') return result; } return default_value; }