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/*
* Copyright 2018 Google
*
* 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 FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_STRING_APPLE_H_
#define FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_STRING_APPLE_H_
// Everything in this header exists for compatibility with Objective-C.
#if __OBJC__
#import <Foundation/Foundation.h>
#include <string>
#include "absl/strings/string_view.h"
namespace firebase {
namespace firestore {
namespace util {
// Translates a C string to the equivalent NSString without making a copy.
inline NSString* WrapNSStringNoCopy(const char* c_str) {
return [[NSString alloc]
initWithBytesNoCopy:const_cast<void*>(static_cast<const void*>(c_str))
length:strlen(c_str)
encoding:NSUTF8StringEncoding
freeWhenDone:NO];
}
// Translates a string_view to the equivalent NSString without making a copy.
inline NSString* WrapNSStringNoCopy(const absl::string_view str) {
return WrapNSStringNoCopy(str.data());
}
// Translates a string_view string to the equivalent NSString by making a copy.
inline NSString* WrapNSString(const absl::string_view str) {
return [[NSString alloc]
initWithBytes:const_cast<void*>(static_cast<const void*>(str.data()))
length:str.length()
encoding:NSUTF8StringEncoding];
}
// Creates an absl::string_view wrapper for the contents of the given
// NSString.
inline absl::string_view MakeStringView(NSString* str) {
return absl::string_view(
[str UTF8String], [str lengthOfBytesUsingEncoding:NSUTF8StringEncoding]);
}
// Creates a std::string wrapper for the contents of the given NSString.
inline std::string MakeString(NSString* str) {
return std::string([str UTF8String],
[str lengthOfBytesUsingEncoding:NSUTF8StringEncoding]);
}
} // namespace util
} // namespace firestore
} // namespace firebase
#endif // __OBJC__
#endif // FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_STRING_APPLE_H_
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