15.12

C/7z.h

@@ -1,5 +1,5 @@
 /* 7z.h -- 7z interface
-2014-02-08 : Igor Pavlov : Public domain */
+2015-11-18 : Igor Pavlov : Public domain */
 
 #ifndef __7Z_H
 #define __7Z_H
@@ -48,21 +48,10 @@ typedef struct
   UInt32 PackStreams[SZ_NUM_PACK_STREAMS_IN_FOLDER_MAX];
   CSzBond Bonds[SZ_NUM_BONDS_IN_FOLDER_MAX];
   CSzCoderInfo Coders[SZ_NUM_CODERS_IN_FOLDER_MAX];
-  UInt64 CodersUnpackSizes[SZ_NUM_CODERS_IN_FOLDER_MAX];
 } CSzFolder;
 
-/*
-typedef struct
-{
-  size_t CodersDataOffset;
-  size_t UnpackSizeDataOffset;
-  // UInt32 StartCoderUnpackSizesIndex;
-  UInt32 StartPackStreamIndex;
-  // UInt32 IndexOfMainOutStream;
-} CSzFolder2;
-*/
 
-SRes SzGetNextFolderItem(CSzFolder *f, CSzData *sd, CSzData *sdSizes);
+SRes SzGetNextFolderItem(CSzFolder *f, CSzData *sd);
 
 typedef struct
 {
@@ -92,47 +81,25 @@ typedef struct
   UInt32 NumPackStreams;
   UInt32 NumFolders;
 
-  UInt64 *PackPositions; // NumPackStreams + 1
-  CSzBitUi32s FolderCRCs;
+  UInt64 *PackPositions;          // NumPackStreams + 1
+  CSzBitUi32s FolderCRCs;         // NumFolders
 
-  size_t *FoCodersOffsets;
-  size_t *FoSizesOffsets;
-  // UInt32 StartCoderUnpackSizesIndex;
-  UInt32 *FoStartPackStreamIndex;
+  size_t *FoCodersOffsets;        // NumFolders + 1
+  UInt32 *FoStartPackStreamIndex; // NumFolders + 1
+  UInt32 *FoToCoderUnpackSizes;   // NumFolders + 1
+  Byte *FoToMainUnpackSizeIndex;  // NumFolders
+  UInt64 *CoderUnpackSizes;       // for all coders in all folders
 
-  // CSzFolder2 *Folders;  // +1 item for sum values
   Byte *CodersData;
-  Byte *UnpackSizesData;
-  size_t UnpackSizesDataSize;
-  // UInt64 *CoderUnpackSizes;
 } CSzAr;
 
+UInt64 SzAr_GetFolderUnpackSize(const CSzAr *p, UInt32 folderIndex);
 
 SRes SzAr_DecodeFolder(const CSzAr *p, UInt32 folderIndex,
     ILookInStream *stream, UInt64 startPos,
     Byte *outBuffer, size_t outSize,
     ISzAlloc *allocMain);
 
-/*
-  SzExtract extracts file from archive
-
-  *outBuffer must be 0 before first call for each new archive.
-
-  Extracting cache:
-    If you need to decompress more than one file, you can send
-    these values from previous call:
-      *blockIndex,
-      *outBuffer,
-      *outBufferSize
-    You can consider "*outBuffer" as cache of solid block. If your archive is solid,
-    it will increase decompression speed.
-  
-    If you use external function, you can declare these 3 cache variables
-    (blockIndex, outBuffer, outBufferSize) as static in that external function.
-    
-    Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
-*/
-
 typedef struct
 {
   CSzAr db;
@@ -142,7 +109,7 @@ typedef struct
 
   UInt32 NumFiles;
 
-  UInt64 *UnpackPositions;
+  UInt64 *UnpackPositions;  // NumFiles + 1
   // Byte *IsEmptyFiles;
   Byte *IsDirs;
   CSzBitUi32s CRCs;
@@ -152,9 +119,8 @@ typedef struct
   CSzBitUi64s MTime;
   CSzBitUi64s CTime;
 
-  // UInt32 *FolderStartPackStreamIndex;
-  UInt32 *FolderStartFileIndex; // + 1
-  UInt32 *FileIndexToFolderIndexMap;
+  UInt32 *FolderToFile;   // NumFolders + 1
+  UInt32 *FileToFolder;   // NumFiles
 
   size_t *FileNameOffsets; /* in 2-byte steps */
   Byte *FileNames;  /* UTF-16-LE */
@@ -182,6 +148,28 @@ size_t SzArEx_GetFullNameLen(const CSzArEx *p, size_t fileIndex);
 UInt16 *SzArEx_GetFullNameUtf16_Back(const CSzArEx *p, size_t fileIndex, UInt16 *dest);
 */
 
+
+
+/*
+  SzArEx_Extract extracts file from archive
+
+  *outBuffer must be 0 before first call for each new archive.
+
+  Extracting cache:
+    If you need to decompress more than one file, you can send
+    these values from previous call:
+      *blockIndex,
+      *outBuffer,
+      *outBufferSize
+    You can consider "*outBuffer" as cache of solid block. If your archive is solid,
+    it will increase decompression speed.
+  
+    If you use external function, you can declare these 3 cache variables
+    (blockIndex, outBuffer, outBufferSize) as static in that external function.
+    
+    Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
+*/
+
 SRes SzArEx_Extract(
     const CSzArEx *db,
     ILookInStream *inStream,