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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "utils/strings/numbers.h"
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#ifdef COMPILER_MSVC
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#include <sstream>
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#endif // COMPILER_MSVC
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#include <stdlib.h>
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namespace libtextclassifier3 {
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// This conversion is only valid for numerical base is 10 (radix)
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bool ParseInt32(const char *c_str, int32 *value) {
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char *temp;
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// Short version of man strtol:
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//
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// strtol parses some optional whitespaces, an optional +/- sign, and next a
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// succession of digits. If it finds some digits, it sets temp to point to
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// the first character after that succession of digits and returns the parsed
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// integer.
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//
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// If there were no digits at all, strtol() sets temp to be c_str (the start
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// address) and returns 0.
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// Explicitly setting this to base 10 as 0 means the base used is determined
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// by the format which can cause problems
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*value = strtol(c_str, &temp, 10); // NOLINT
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// temp != c_str means that the input string contained at least one digit (see
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// above). *temp == '\0' means the input string does not contain any random
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// chars after the number.
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return (temp != c_str) && (*temp == '\0');
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}
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// This conversion is only valid for numerical base is 10 (radix)
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bool ParseInt64(const char *c_str, int64 *value) {
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char *temp;
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// Explicitly setting this to base 10 as 0 means the base used is determined
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// by the format which can cause problems
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*value = strtoll(c_str, &temp, 10); // NOLINT
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// See comments inside ParseInt32.
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return (temp != c_str) && (*temp == '\0');
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}
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bool ParseDouble(const char *c_str, double *value) {
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char *temp;
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*value = strtod(c_str, &temp);
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// See comments inside ParseInt32.
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return (temp != c_str) && (*temp == '\0');
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}
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#ifdef COMPILER_MSVC
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std::string IntToString(int64 input) {
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std::stringstream stream;
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stream << input;
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return stream.str();
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}
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#else
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std::string IntToString(int64 input) {
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return std::to_string(input);
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}
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#endif // COMPILER_MSVC
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} // namespace libtextclassifier3
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