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author | Igor Murashkin <iam@google.com> | 2014-04-08 11:22:42 -0700 |
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committer | Riley Andrews <riandrews@google.com> | 2014-06-20 20:01:49 +0000 |
commit | d8f2a8d34a5655d81fec2f56eb3ec36bd508886a (patch) | |
tree | e86242c509bcb44d84ac35c915a01a499bc5e029 /include/cutils/properties.h | |
parent | 4f5392cb6c09618b968a4c86bbde079bef57afd1 (diff) | |
download | system_core-d8f2a8d34a5655d81fec2f56eb3ec36bd508886a.zip system_core-d8f2a8d34a5655d81fec2f56eb3ec36bd508886a.tar.gz system_core-d8f2a8d34a5655d81fec2f56eb3ec36bd508886a.tar.bz2 |
cutils: Add property_get_bool, _get_int32, _get_int64
* Read out system properties with same syntax as SystemProperties.java
* Also adds unit test suite to validate correctness of properties
* Also fixes buffer overrun in property_get
(cherry picked from commit d4507e9246e4855c5431cac5c3d1a9155caebc87)
Change-Id: Ifd42911f93e17da09e6ff1298e8875e02f3b6608
Diffstat (limited to 'include/cutils/properties.h')
-rw-r--r-- | include/cutils/properties.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/include/cutils/properties.h b/include/cutils/properties.h index 2c70165..798db8b 100644 --- a/include/cutils/properties.h +++ b/include/cutils/properties.h @@ -20,6 +20,7 @@ #include <sys/cdefs.h> #include <stddef.h> #include <sys/system_properties.h> +#include <stdint.h> #ifdef __cplusplus extern "C" { @@ -44,6 +45,64 @@ extern "C" { */ int property_get(const char *key, char *value, const char *default_value); +/* property_get_bool: returns the value of key coerced into a +** boolean. If the property is not set, then the default value is returned. +** +* The following is considered to be true (1): +** "1", "true", "y", "yes", "on" +** +** The following is considered to be false (0): +** "0", "false", "n", "no", "off" +** +** The conversion is whitespace-sensitive (e.g. " off" will not be false). +** +** If no property with this key is set (or the key is NULL) or the boolean +** conversion fails, the default value is returned. +**/ +int8_t property_get_bool(const char *key, int8_t default_value); + +/* property_get_int64: returns the value of key truncated and coerced into a +** int64_t. If the property is not set, then the default value is used. +** +** The numeric conversion is identical to strtoimax with the base inferred: +** - All digits up to the first non-digit characters are read +** - The longest consecutive prefix of digits is converted to a long +** +** Valid strings of digits are: +** - An optional sign character + or - +** - An optional prefix indicating the base (otherwise base 10 is assumed) +** -- 0 prefix is octal +** -- 0x / 0X prefix is hex +** +** Leading/trailing whitespace is ignored. Overflow/underflow will cause +** numeric conversion to fail. +** +** If no property with this key is set (or the key is NULL) or the numeric +** conversion fails, the default value is returned. +**/ +int64_t property_get_int64(const char *key, int64_t default_value); + +/* property_get_int32: returns the value of key truncated and coerced into an +** int32_t. If the property is not set, then the default value is used. +** +** The numeric conversion is identical to strtoimax with the base inferred: +** - All digits up to the first non-digit characters are read +** - The longest consecutive prefix of digits is converted to a long +** +** Valid strings of digits are: +** - An optional sign character + or - +** - An optional prefix indicating the base (otherwise base 10 is assumed) +** -- 0 prefix is octal +** -- 0x / 0X prefix is hex +** +** Leading/trailing whitespace is ignored. Overflow/underflow will cause +** numeric conversion to fail. +** +** If no property with this key is set (or the key is NULL) or the numeric +** conversion fails, the default value is returned. +**/ +int32_t property_get_int32(const char *key, int32_t default_value); + /* property_set: returns 0 on success, < 0 on failure */ int property_set(const char *key, const char *value); |