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authorElliott Hughes <enh@google.com>2015-12-07 14:31:13 -0800
committerElliott Hughes <enh@google.com>2015-12-07 14:31:53 -0800
commitf2584be414037aaab9e344bc9f65872da624d9f0 (patch)
tree1d2643eec68c8d8b03ccd6cabf9856182e197708 /base/include/android-base/parseint.h
parentd1379a8aedb7b80edac8849d2e64ceffa409632e (diff)
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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.h73
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