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author | Elliott Hughes <enh@google.com> | 2015-12-07 14:31:13 -0800 |
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committer | Elliott Hughes <enh@google.com> | 2015-12-07 14:31:53 -0800 |
commit | f2584be414037aaab9e344bc9f65872da624d9f0 (patch) | |
tree | 1d2643eec68c8d8b03ccd6cabf9856182e197708 /base/include/android-base/parseint.h | |
parent | d1379a8aedb7b80edac8849d2e64ceffa409632e (diff) | |
download | system_core-f2584be414037aaab9e344bc9f65872da624d9f0.tar.gz system_core-f2584be414037aaab9e344bc9f65872da624d9f0.tar.bz2 system_core-f2584be414037aaab9e344bc9f65872da624d9f0.zip |
Rename base/ to android-base/.
Bug: http://b/26023797
Change-Id: Ie6c63bf86bed05faab87d290de6f34d9af3532a8
Diffstat (limited to 'base/include/android-base/parseint.h')
-rw-r--r-- | base/include/android-base/parseint.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/base/include/android-base/parseint.h b/base/include/android-base/parseint.h new file mode 100644 index 000000000..0543795e1 --- /dev/null +++ b/base/include/android-base/parseint.h @@ -0,0 +1,73 @@ +/* + * Copyright (C) 2015 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef BASE_PARSEINT_H +#define BASE_PARSEINT_H + +#include <errno.h> +#include <stdlib.h> + +#include <limits> + +namespace android { +namespace base { + +// Parses the unsigned decimal integer in the string 's' and sets 'out' to +// that value. Optionally allows the caller to define a 'max' beyond which +// otherwise valid values will be rejected. Returns boolean success. +template <typename T> +bool ParseUint(const char* s, T* out, + T max = std::numeric_limits<T>::max()) { + int base = (s[0] == '0' && s[1] == 'x') ? 16 : 10; + errno = 0; + char* end; + unsigned long long int result = strtoull(s, &end, base); + if (errno != 0 || s == end || *end != '\0') { + return false; + } + if (max < result) { + return false; + } + *out = static_cast<T>(result); + return true; +} + +// Parses the signed decimal integer in the string 's' and sets 'out' to +// that value. Optionally allows the caller to define a 'min' and 'max +// beyond which otherwise valid values will be rejected. Returns boolean +// success. +template <typename T> +bool ParseInt(const char* s, T* out, + T min = std::numeric_limits<T>::min(), + T max = std::numeric_limits<T>::max()) { + int base = (s[0] == '0' && s[1] == 'x') ? 16 : 10; + errno = 0; + char* end; + long long int result = strtoll(s, &end, base); + if (errno != 0 || s == end || *end != '\0') { + return false; + } + if (result < min || max < result) { + return false; + } + *out = static_cast<T>(result); + return true; +} + +} // namespace base +} // namespace android + +#endif // BASE_PARSEINT_H |