twitter · NSProgrammer · Feb 21, 2019 · Feb 21, 2019
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,14 +2,21 @@
 
 ## Info
 
-**Document version:** 2.12.0
+**Document version:** 2.12.1
 
-**Last updated:** 12/18/2018
+**Last updated:** 01/22/2018
 
 **Author:** Nolan O'Brien
 
 ## History
 
+### 2.12.1
+
+- Fix bugs related to capping the sizes of caches
+  - Capping a cache to `0` bytes would not completely disable it as documented, fixed
+  - Setting the max ratio value to a negative value would not use the default value as documented, fixed
+  - Thanks to @jml5qh for filing this issue (#41)
+
 ### 2.12.0
 
 - Add `TIPImageTypeHEIC` and `TIPImageTypeAVCI` support

diff --git a/TwitterImagePipeline.podspec b/TwitterImagePipeline.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
   s.name             = 'TwitterImagePipeline'
-  s.version          = '2.12.0'
-  s.compiler_flags   = '-DTIP_PROJECT_VERSION=2.12.0'
+  s.version          = '2.12.1'
+  s.compiler_flags   = '-DTIP_PROJECT_VERSION=2.12'
   s.summary          = 'Twitter Image Pipeline is a robust and performant image loading and caching framework for iOS'
   s.description      = 'Twitter created a framework for image loading/caching in order to fulfill the numerous needs of Twitter for iOS including being fast, safe, modular and versatile.'
   s.homepage         = 'https://github.com/twitter/ios-twitter-image-pipeline'

diff --git a/TwitterImagePipeline.xcodeproj/project.pbxproj b/TwitterImagePipeline.xcodeproj/project.pbxproj
@@ -1305,10 +1305,9 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 8B6511D92135DE7300ED057B /* Build configuration list for PBXNativeTarget "TwitterImagePipeline.framework tvOS" */;
 			buildPhases = (
+				8B6511BB2135DE7300ED057B /* Headers */,
 				8B6511952135DE7300ED057B /* Sources */,
 				8B6511BA2135DE7300ED057B /* Frameworks */,
-				8B6511BB2135DE7300ED057B /* Headers */,
-				8B6511D82135DE7300ED057B /* Resources */,
 			);
 			buildRules = (
 			);
@@ -1323,10 +1322,9 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 8B6511F82135DEB400ED057B /* Build configuration list for PBXNativeTarget "TIPTests tvOS" */;
 			buildPhases = (
+				8B6511F12135DEB400ED057B /* Headers */,
 				8B6511E12135DEB400ED057B /* Sources */,
 				8B6511ED2135DEB400ED057B /* Frameworks */,
-				8B6511F12135DEB400ED057B /* Headers */,
-				8B6511F72135DEB400ED057B /* Resources */,
 			);
 			buildRules = (
 			);
@@ -1379,10 +1377,9 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 8BA9755C1D77E2CA00601D70 /* Build configuration list for PBXNativeTarget "TIPTests" */;
 			buildPhases = (
+				8BA975501D77E2C900601D70 /* Headers */,
 				8BA9754E1D77E2C900601D70 /* Sources */,
 				8BA9754F1D77E2C900601D70 /* Frameworks */,
-				8BA975501D77E2C900601D70 /* Headers */,
-				8BA975511D77E2C900601D70 /* Resources */,
 			);
 			buildRules = (
 			);
@@ -1471,10 +1468,9 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 8BFF17751DF5B4AD005DE734 /* Build configuration list for PBXNativeTarget "TwitterImagePipeline.framework" */;
 			buildPhases = (
+				8BFF17671DF5B4AD005DE734 /* Headers */,
 				8BFF17651DF5B4AD005DE734 /* Sources */,
 				8BFF17661DF5B4AD005DE734 /* Frameworks */,
-				8BFF17671DF5B4AD005DE734 /* Headers */,
-				8BFF17681DF5B4AD005DE734 /* Resources */,
 			);
 			buildRules = (
 			);
@@ -1577,20 +1573,6 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
-		8B6511D82135DE7300ED057B /* Resources */ = {
-			isa = PBXResourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-		8B6511F72135DEB400ED057B /* Resources */ = {
-			isa = PBXResourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 		8B65120B2135DFC600ED057B /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -1619,13 +1601,6 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
-		8BA975511D77E2C900601D70 /* Resources */ = {
-			isa = PBXResourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 		8BB66A0E1E450DFB00A8F241 /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -1667,13 +1642,6 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
-		8BFF17681DF5B4AD005DE734 /* Resources */ = {
-			isa = PBXResourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */

diff --git a/...terImagePipeline.xcodeproj/xcshareddata/xcschemes/TwitterImagePipeline.framework.xcscheme b/...terImagePipeline.xcodeproj/xcshareddata/xcschemes/TwitterImagePipeline.framework.xcscheme
@@ -20,20 +20,6 @@
                ReferencedContainer = "container:TwitterImagePipeline.xcodeproj">
             </BuildableReference>
          </BuildActionEntry>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "NO"
-            buildForProfiling = "NO"
-            buildForArchiving = "NO"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "8BA975521D77E2C900601D70"
-               BuildableName = "TIPTests.framework"
-               BlueprintName = "TIPTests"
-               ReferencedContainer = "container:TwitterImagePipeline.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
          <BuildActionEntry
             buildForTesting = "YES"
             buildForRunning = "NO"

diff --git a/TwitterImagePipeline/Project/NSDictionary+TIPAdditions.m b/TwitterImagePipeline/Project/NSDictionary+TIPAdditions.m
@@ -88,7 +88,9 @@ - (void)tip_setObject:(id)object forCaseInsensitiveKey:(NSString *)key
 {
     TIPAssert(key);
     [self tip_removeObjectsForCaseInsensitiveKey:key];
+#ifndef __clang_analyzer__ // reports key can be nil nil; we prefer to crash if it is
     self[key] = object;
+#endif
 }
 
 - (void)tip_makeAllKeysLowercase

diff --git a/TwitterImagePipeline/Project/TIPImageDiskCache.m b/TwitterImagePipeline/Project/TIPImageDiskCache.m
@@ -213,7 +213,7 @@ - (TIPLRUCache *)manifest
     }
 
     TIPAssert(manifest != nil);
-    return manifest;
+    return (TIPLRUCache * _Nonnull)manifest; // TIPAssert() performed 1 line above
 }
 
 - (NSUInteger)totalCost
@@ -1022,38 +1022,46 @@ static void _diskCache_updateImageEntry(SELF_ARG,
         didChangeComplete = YES;
     }
 
-    // Update xattrs and LRU
-    const NSUInteger newCost = existingEntry.partialFileSize + existingEntry.completeFileSize;
-    _diskCache_updateByteCounts(self, newCost /*bytesAdded*/, oldCost /*bytesRemoved*/);
-    if (!hasPreviousEntry && existingEntry) {
-        self->_globalConfig.internalTotalCountForAllDiskCaches += 1;
-    }
+    if (!existingEntry.partialImageContext && !existingEntry.completeImageContext) {
+        // shoot... the save cannot complete -- purge the entry
+        if (hasPreviousEntry) {
+            [manifest removeEntry:existingEntry];
+        }
+    } else {
 
-    if (gTwitterImagePipelineAssertEnabled) {
-        if (existingEntry.partialImageContext && 0 == existingEntry.partialFileSize) {
-            NSDictionary *info = @{
-                                   @"dimension" : NSStringFromCGSize(existingEntry.partialImageContext.dimensions),
-                                   @"URL" : existingEntry.partialImageContext.URL,
-                                   @"id" : existingEntry.identifier,
-                                   };
-            TIPLogError(@"Cached zero cost partial image to disk cache %@", info);
+        // Update xattrs and LRU
+        const NSUInteger newCost = existingEntry.partialFileSize + existingEntry.completeFileSize;
+        _diskCache_updateByteCounts(self, newCost /*bytesAdded*/, oldCost /*bytesRemoved*/);
+        if (!hasPreviousEntry && existingEntry) {
+            self->_globalConfig.internalTotalCountForAllDiskCaches += 1;
         }
-        if (existingEntry.completeImageContext && 0 == existingEntry.completeFileSize) {
-            NSDictionary *info = @{
-                                   @"dimension" : NSStringFromCGSize(existingEntry.completeImageContext.dimensions),
-                                   @"URL" : existingEntry.completeImageContext.URL,
-                                   @"id" : existingEntry.identifier,
-                                   };
-            TIPLogError(@"Cached zero cost complete image to disk cache %@", info);
+
+        [manifest addEntry:existingEntry];
+        if (didChangePartial) {
+            _diskCache_touchEntry(self, existingEntry, forciblyReplaceExisting /*forced*/, YES /*partial*/);
+        }
+        if (didChangeComplete) {
+            _diskCache_touchEntry(self, existingEntry, forciblyReplaceExisting /*forced*/, NO /*partial*/);
         }
-    }
 
-    [manifest addEntry:existingEntry];
-    if (didChangePartial) {
-        _diskCache_touchEntry(self, existingEntry, forciblyReplaceExisting /*forced*/, YES /*partial*/);
-    }
-    if (didChangeComplete) {
-        _diskCache_touchEntry(self, existingEntry, forciblyReplaceExisting /*forced*/, NO /*partial*/);
+        if (gTwitterImagePipelineAssertEnabled) {
+            if (existingEntry.partialImageContext && 0 == existingEntry.partialFileSize) {
+                NSDictionary *info = @{
+                                       @"dimension" : NSStringFromCGSize(existingEntry.partialImageContext.dimensions),
+                                       @"URL" : existingEntry.partialImageContext.URL,
+                                       @"id" : existingEntry.identifier,
+                                       };
+                TIPLogError(@"Cached zero cost partial image to disk cache %@", info);
+            }
+            if (existingEntry.completeImageContext && 0 == existingEntry.completeFileSize) {
+                NSDictionary *info = @{
+                                       @"dimension" : NSStringFromCGSize(existingEntry.completeImageContext.dimensions),
+                                       @"URL" : existingEntry.completeImageContext.URL,
+                                       @"id" : existingEntry.identifier,
+                                       };
+                TIPLogError(@"Cached zero cost complete image to disk cache %@", info);
+            }
+        }
     }
 
     [self->_globalConfig pruneAllCachesOfType:self.cacheType withPriorityCache:self];

diff --git a/TwitterImagePipeline/Project/TIPImageRenderedCache.m b/TwitterImagePipeline/Project/TIPImageRenderedCache.m
@@ -282,7 +282,9 @@ - (void)inspect:(TIPInspectableCacheCallback)callback
                                                                              class:[TIPImagePipelineInspectionResultRenderedEntry class]];
                 TIPAssert(entry != nil);
                 entry.bytesUsed = [entry.image tip_estimatedSizeInBytes];
+#ifndef __clang_analyzer__ // reports entry can be nil; we prefer to crash if it is
                 [inspectedEntries addObject:entry];
+#endif
             }
         }
 

diff --git a/TwitterImagePipeline/Project/TIPImageStoreAndMoveOperations.m b/TwitterImagePipeline/Project/TIPImageStoreAndMoveOperations.m
@@ -40,7 +40,9 @@ @interface TIPImageStoreOperation (Private)
 static TIPImageContainer * __nullable _getImageContainer(PRIVATE_SELF(TIPImageStoreOperation));
 static TIPCompleteImageEntryContext *_getEntryContext(PRIVATE_SELF(TIPImageStoreOperation),
                                                       NSURL *imageURL,
-                                                      TIPImageContainer * __nullable imageContainer);
+                                                      TIPImageContainer * __nullable imageContainer,
+                                                      NSString * __nullable imageFilePath,
+                                                      NSData * __nullable imageData);
 static void _asyncStoreMemoryEntry(PRIVATE_SELF(TIPImageStoreOperation),
                                    TIPImageCacheEntry *memoryEntry,
                                    void(^complete)(BOOL));
@@ -193,7 +195,11 @@ - (void)main
         NSString *identifier = TIPImageStoreRequestGetImageIdentifier(_request);
 
         // Create context
-        TIPCompleteImageEntryContext *context = _getEntryContext(self, imageURL, imageContainer);
+        TIPCompleteImageEntryContext *context = _getEntryContext(self,
+                                                                 imageURL,
+                                                                 imageContainer,
+                                                                 imageFilePath,
+                                                                 imageData);
 
         // Create Memory Entry
         TIPImageCacheEntry *memoryEntry = nil;
@@ -330,7 +336,9 @@ @implementation TIPImageStoreOperation (Private)
 
 static TIPCompleteImageEntryContext *_getEntryContext(PRIVATE_SELF(TIPImageStoreOperation),
                                                       NSURL *imageURL,
-                                                      TIPImageContainer * __nullable imageContainer)
+                                                      TIPImageContainer * __nullable imageContainer,
+                                                      NSString * __nullable imageFilePath,
+                                                      NSData * __nullable imageData)
 {
     TIPAssert(self);
     if (!self) {
@@ -354,6 +362,10 @@ @implementation TIPImageStoreOperation (Private)
         context.dimensions = imageContainer.dimensions;
     } else if ([self->_request respondsToSelector:@selector(imageDimensions)]) {
         context.dimensions = self->_request.imageDimensions;
+    } else if (imageData) {
+        context.dimensions = TIPDetectImageDataDimensions(imageData);
+    } else if (imageFilePath) {
+        context.dimensions = TIPDetectImageFileDimensions(imageFilePath);
     }
     if ([self->_request respondsToSelector:@selector(imageType)]) {
         context.imageType = [self->_request imageType];

diff --git a/TwitterImagePipeline/Project/TIPLRUCache.m b/TwitterImagePipeline/Project/TIPLRUCache.m
@@ -86,12 +86,22 @@ - (void)addEntry:(id<TIPLRUEntry>)entry
 
     NSString *identifier = entry.LRUEntryIdentifier;
     TIPAssert(identifier != nil);
+#ifndef __clang_analyzer__
+    // clang analyzer reports identifier can be nil for the check   if (... && _cache[identifier]) {
+    // just below.  (and then, if we ignore only that with #ifndef __clang_analyzer__, then it reports
+    // _cache[identifier] within the TIPAssert() protected by the if stmt.)
+    // however, in real life, the TIPAssert(identifier != nil) just above will prevent control from getting to
+    // the if stmt at all when gTwitterImagePipelineAssertEnabled is true, and when it is false, then the 2nd
+    // part of the condition (and the stmts protected by the condition) will never be executed and won't crash.
     if (gTwitterImagePipelineAssertEnabled && _cache[identifier]) {
         TIPAssert((id)_cache[identifier] == (id)entry);
     }
+#endif
 
     [self moveEntryToFront:entry];
+#ifndef __clang_analyzer__ // reports identifier can be nil; we prefer to crash if it is
     _cache[identifier] = entry;
+#endif
 
     TIPLRUCacheAssertHeadAndTail(self);
 }
@@ -114,7 +124,9 @@ - (void)appendEntry:(id<TIPLRUEntry>)entry
     entry.previousLRUEntry = _tailEntry;
     entry.nextLRUEntry = nil;
     _tailEntry = entry;
+#ifndef __clang_analyzer__ // reports identifier can be nil; we prefer to crash if it is
     _cache[identifier] = entry;
+#endif
 
     if (!_headEntry) {
         _headEntry = _tailEntry;

diff --git a/TwitterImagePipeline/Project/TIP_Project.m b/TwitterImagePipeline/Project/TIP_Project.m
@@ -145,7 +145,7 @@ CGSize TIPScaleToFitKeepingAspectRatio(CGSize sourceSize, CGSize targetSize, CGF
     TIPAssert(safe != 0);
     NSString *raw = TIPURLDecodeString(safe, NO);
     TIPAssert(raw != 0);
-    return raw;
+    return (NSString * _Nonnull)raw; // TIPAssert() performed 1 line above
 }
 
 dispatch_block_t __nullable TIPStartBackgroundTask(NSString * __nullable name)