1 files changed, 0 insertions, 207 deletions
diff --git a/Firebase/Utilities/NSData+zlib/GULNSData+zlib.m b/Firebase/Utilities/NSData+zlib/GULNSData+zlib.m
deleted file mode 100644
index cd3394a..0000000
--- a/Firebase/Utilities/NSData+zlib/GULNSData+zlib.m
+++ /dev/null
@@ -1,207 +0,0 @@
-// 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.
-
-#import "GULNSData+zlib.h"
-
-#import <zlib.h>
-
-#define kChunkSize 1024
-#define Z_DEFAULT_COMPRESSION (-1)
-
-NSString *const GULNSDataZlibErrorDomain = @"com.google.GULNSDataZlibErrorDomain";
-NSString *const GULNSDataZlibErrorKey = @"GULNSDataZlibErrorKey";
-NSString *const GULNSDataZlibRemainingBytesKey = @"GULNSDataZlibRemainingBytesKey";
-
-@implementation NSData (GULGzip)
-
-+ (NSData *)gul_dataByInflatingGzippedData:(NSData *)data error:(NSError **)error {
-  const void *bytes = [data bytes];
-  NSUInteger length = [data length];
-  if (!bytes || !length) {
-    return nil;
-  }
-
-#if defined(__LP64__) && __LP64__
-  // Don't support > 32bit length for 64 bit, see note in header.
-  if (length > UINT_MAX) {
-    return nil;
-  }
-#endif
-
-  z_stream strm;
-  bzero(&strm, sizeof(z_stream));
-
-  // Setup the input.
-  strm.avail_in = (unsigned int)length;
-  strm.next_in = (unsigned char *)bytes;
-
-  int windowBits = 15;  // 15 to enable any window size
-  windowBits += 32;     // and +32 to enable zlib or gzip header detection.
-
-  int retCode;
-  if ((retCode = inflateInit2(&strm, windowBits)) != Z_OK) {
-    if (error) {
-      NSDictionary *userInfo = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:retCode]
-                                                           forKey:GULNSDataZlibErrorKey];
-      *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
-                                   code:GULNSDataZlibErrorInternal
-                               userInfo:userInfo];
-    }
-    return nil;
-  }
-
-  // Hint the size at 4x the input size.
-  NSMutableData *result = [NSMutableData dataWithCapacity:(length * 4)];
-  unsigned char output[kChunkSize];
-
-  // Loop to collect the data.
-  do {
-    // Update what we're passing in.
-    strm.avail_out = kChunkSize;
-    strm.next_out = output;
-    retCode = inflate(&strm, Z_NO_FLUSH);
-    if ((retCode != Z_OK) && (retCode != Z_STREAM_END)) {
-      if (error) {
-        NSMutableDictionary *userInfo =
-            [NSMutableDictionary dictionaryWithObject:[NSNumber numberWithInt:retCode]
-                                               forKey:GULNSDataZlibErrorKey];
-        if (strm.msg) {
-          NSString *message = [NSString stringWithUTF8String:strm.msg];
-          if (message) {
-            [userInfo setObject:message forKey:NSLocalizedDescriptionKey];
-          }
-        }
-        *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
-                                     code:GULNSDataZlibErrorInternal
-                                 userInfo:userInfo];
-      }
-      inflateEnd(&strm);
-      return nil;
-    }
-    // Collect what we got.
-    unsigned gotBack = kChunkSize - strm.avail_out;
-    if (gotBack > 0) {
-      [result appendBytes:output length:gotBack];
-    }
-
-  } while (retCode == Z_OK);
-
-  // Make sure there wasn't more data tacked onto the end of a valid compressed stream.
-  if (strm.avail_in != 0) {
-    if (error) {
-      NSDictionary *userInfo =
-          [NSDictionary dictionaryWithObject:[NSNumber numberWithUnsignedInt:strm.avail_in]
-                                      forKey:GULNSDataZlibRemainingBytesKey];
-      *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
-                                   code:GULNSDataZlibErrorDataRemaining
-                               userInfo:userInfo];
-    }
-    result = nil;
-  }
-  // The only way out of the loop was by hitting the end of the stream.
-  NSAssert(retCode == Z_STREAM_END,
-           @"Thought we finished inflate w/o getting a result of stream end, code %d", retCode);
-
-  // Clean up.
-  inflateEnd(&strm);
-
-  return result;
-}
-
-+ (NSData *)gul_dataByGzippingData:(NSData *)data error:(NSError **)error {
-  const void *bytes = [data bytes];
-  NSUInteger length = [data length];
-
-  int level = Z_DEFAULT_COMPRESSION;
-  if (!bytes || !length) {
-    return nil;
-  }
-
-#if defined(__LP64__) && __LP64__
-  // Don't support > 32bit length for 64 bit, see note in header.
-  if (length > UINT_MAX) {
-    if (error) {
-      *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
-                                   code:GULNSDataZlibErrorGreaterThan32BitsToCompress
-                               userInfo:nil];
-    }
-    return nil;
-  }
-#endif
-
-  z_stream strm;
-  bzero(&strm, sizeof(z_stream));
-
-  int memLevel = 8;          // Default.
-  int windowBits = 15 + 16;  // Enable gzip header instead of zlib header.
-
-  int retCode;
-  if ((retCode = deflateInit2(&strm, level, Z_DEFLATED, windowBits, memLevel,
-                              Z_DEFAULT_STRATEGY)) != Z_OK) {
-    if (error) {
-      NSDictionary *userInfo = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:retCode]
-                                                           forKey:GULNSDataZlibErrorKey];
-      *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
-                                   code:GULNSDataZlibErrorInternal
-                               userInfo:userInfo];
-    }
-    return nil;
-  }
-
-  // Hint the size at 1/4 the input size.
-  NSMutableData *result = [NSMutableData dataWithCapacity:(length / 4)];
-  unsigned char output[kChunkSize];
-
-  // Setup the input.
-  strm.avail_in = (unsigned int)length;
-  strm.next_in = (unsigned char *)bytes;
-
-  // Collect the data.
-  do {
-    // update what we're passing in
-    strm.avail_out = kChunkSize;
-    strm.next_out = output;
-    retCode = deflate(&strm, Z_FINISH);
-    if ((retCode != Z_OK) && (retCode != Z_STREAM_END)) {
-      if (error) {
-        NSDictionary *userInfo = [NSDictionary dictionaryWithObject:[NSNumber numberWithInt:retCode]
-                                                             forKey:GULNSDataZlibErrorKey];
-        *error = [NSError errorWithDomain:GULNSDataZlibErrorDomain
-                                     code:GULNSDataZlibErrorInternal
-                                 userInfo:userInfo];
-      }
-      deflateEnd(&strm);
-      return nil;
-    }
-    // Collect what we got.
-    unsigned gotBack = kChunkSize - strm.avail_out;
-    if (gotBack > 0) {
-      [result appendBytes:output length:gotBack];
-    }
-
-  } while (retCode == Z_OK);
-
-  // If the loop exits, it used all input and the stream ended.
-  NSAssert(strm.avail_in == 0,
-           @"Should have finished deflating without using all input, %u bytes left", strm.avail_in);
-  NSAssert(retCode == Z_STREAM_END,
-           @"thought we finished deflate w/o getting a result of stream end, code %d", retCode);
-
-  // Clean up.
-  deflateEnd(&strm);
-
-  return result;
-}
-
-@end