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Diffstat (limited to 'src/common/env.c')
| -rw-r--r-- | src/common/env.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/common/env.c b/src/common/env.c new file mode 100644 index 0000000..4ea8bad --- /dev/null +++ b/src/common/env.c @@ -0,0 +1,156 @@ +/* + * Copyright (c) 2012 - 2013, Intel Corporation + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Intel Corporation nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdint.h> +#include <stdbool.h> + +const char *mrp_env_config_key(const char *config, const char *key) +{ + const char *beg; + int len; + + if (config != NULL) { + len = strlen(key); + + beg = config; + while (beg != NULL) { + beg = strstr(beg, key); + + if (beg != NULL) { + if ((beg == config || beg[-1] == ':') && + (beg[len] == '=' || beg[len] == ':' || beg[len] == '\0')) + return (beg[len] == '=' ? beg + len + 1 : ""); + else + beg++; + } + } + } + + return NULL; +} + + +int32_t mrp_env_config_int32(const char *cfg, const char *key, int32_t defval) +{ + const char *v; + char *end; + int i; + + v = mrp_env_config_key(cfg, key); + + if (v != NULL) { + if (*v) { + i = strtol(v, &end, 10); + + if (end && (!*end || *end == ':')) + return i; + } + } + + return defval; +} + + +uint32_t mrp_env_config_uint32(const char *cfg, const char *key, + uint32_t defval) +{ + const char *v; + char *end; + int i; + + v = mrp_env_config_key(cfg, key); + + if (v != NULL) { + if (*v) { + i = strtol(v, &end, 10); + + if (end && (!*end || *end == ':')) + return i; + } + } + + return defval; +} + + +int mrp_env_config_bool(const char *config, const char *key, bool defval) +{ + const char *v; + + v = mrp_env_config_key(config, key); + + if (v != NULL) { + if (*v) { + if ((!strncasecmp(v, "false", 5) && (v[5] == ':' || !v[5])) || + (!strncasecmp(v, "true" , 4) && (v[4] == ':' || !v[4]))) + return (v[0] == 't' || v[0] == 'T'); + if ((!strncasecmp(v, "no" , 2) && (v[2] == ':' || !v[2])) || + (!strncasecmp(v, "yes", 3) && (v[3] == ':' || !v[3]))) + return (v[0] == 'y' || v[0] == 'Y'); + if ((!strncasecmp(v, "on" , 2) && (v[2] == ':' || !v[2])) || + (!strncasecmp(v, "off", 3) && (v[3] == ':' || !v[3]))) + return (v[1] == 'n' || v[1] == 'N'); + } + else if (*v == '\0') + return !defval; /* hmm... is this right */ + } + + return defval; +} + + +int mrp_env_config_string(const char *cfg, const char *key, + const char *defval, char *buf, size_t size) +{ + const char *v; + char *end; + int len; + + v = mrp_env_config_key(cfg, key); + + if (v == NULL) + v = defval; + + end = strchr(v, ':'); + + if (end != NULL) + len = end - v; + else + len = strlen(v); + + len = snprintf(buf, size, "%*.*s", len, len, v); + + if (len >= (int)size - 1) + buf[size - 1] = '\0'; + + return len; +} |