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// Copyright 2020 Google LLC
//
// 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
//
// https://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.
#import "internal/platform/implementation/ios/Source/Platform/input_file.h"
#include <string>
#import "internal/platform/exception.h"
#import "internal/platform/implementation/ios/Source/Platform/utils.h"
namespace location {
namespace nearby {
namespace ios {
InputFile::InputFile(NSURL *nsURL) : nsURL_(nsURL) {
std::string string = CppStringFromObjCString([nsURL_ absoluteString]);
nsStream_ = [NSInputStream inputStreamWithURL:nsURL_];
[nsStream_ scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[nsStream_ open];
}
ExceptionOr<ByteArray> InputFile::Read(std::int64_t size) {
uint8_t *bytes_read = new uint8_t[size];
NSUInteger numberOfBytesToRead = [[NSNumber numberWithLongLong:size] unsignedIntegerValue];
NSInteger numberOfBytesRead = [nsStream_ read:bytes_read maxLength:numberOfBytesToRead];
if (numberOfBytesRead == 0) {
// Reached end of stream.
return ExceptionOr<ByteArray>();
} else if (numberOfBytesRead < 0) {
// Stream error.
return ExceptionOr<ByteArray>(Exception::kIo);
}
return ExceptionOr<ByteArray>(ByteArrayFromNSData([NSData dataWithBytes:bytes_read
length:numberOfBytesRead]));
}
std::string InputFile::GetFilePath() const {
return CppStringFromObjCString([nsURL_ absoluteString]);
}
std::int64_t InputFile::GetTotalSize() const {
NSNumber *fileSizeValue = nil;
BOOL result = [nsURL_ getResourceValue:&fileSizeValue forKey:NSURLFileSizeKey error:nil];
if (result) {
return fileSizeValue.longValue;
} else {
return 0;
}
}
Exception InputFile::Close() {
[nsStream_ close];
return {Exception::kSuccess};
}
} // namespace ios
} // namespace nearby
} // namespace location
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