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66 lines
1.6 KiB
Plaintext
66 lines
1.6 KiB
Plaintext
//
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// Copyright (c) 2015 Google Inc.
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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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#import "LogWrapper.h"
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#include <stdlib.h>
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#include <stdio.h>
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#define ARRAYSIZE(x) (sizeof(x)/sizeof(x[0]))
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@implementation LogWrapper {
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char _tempLogFile[64];
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NSFileHandle *_handle;
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int _dupFd;
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}
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- (instancetype)init {
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if ((self = [super init])) {
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_dupFd = dup(fileno(stderr));
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snprintf(_tempLogFile, ARRAYSIZE(_tempLogFile), "/tmp/objc-logwrapper.XXXXXX");
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int fd = mkstemp(_tempLogFile);
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NSLog(@"LogWrapper writing to: %s", _tempLogFile);
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freopen(_tempLogFile, "w+", stderr);
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_handle = [[NSFileHandle alloc] initWithFileDescriptor:fd closeOnDealloc:YES];
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}
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return self;
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}
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- (void)dealloc {
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unlink(_tempLogFile);
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NSLog(@"~LogWrapper removed: %s", _tempLogFile);
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dup2(_dupFd, fileno(stderr));
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close(_dupFd);
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}
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- (NSArray *)lines {
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NSData *data = [_handle readDataToEndOfFile];
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[_handle seekToFileOffset:data.length];
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if (data == nil || !data.bytes) {
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return nil;
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}
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NSString *allData = [NSString stringWithUTF8String:(const char *)[data bytes]];
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return [allData componentsSeparatedByString:@"\n"];
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}
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@end
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