- MDEV-11295: developing handling files contained in ZIP file.

  A first experimental and limited implementation.
  modified:   storage/connect/CMakeLists.txt
  modified:   storage/connect/filamap.cpp
  new file:   storage/connect/filamzip.cpp
  new file:   storage/connect/filamzip.h
  modified:   storage/connect/ha_connect.cc
  new file:   storage/connect/ioapi.c
  new file:   storage/connect/ioapi.h
  modified:   storage/connect/mycat.cc
  modified:   storage/connect/plgdbsem.h
  modified:   storage/connect/plgdbutl.cpp
  modified:   storage/connect/tabdos.cpp
  modified:   storage/connect/tabdos.h
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/tabfmt.h
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabjson.h
  new file:   storage/connect/tabzip.cpp
  new file:   storage/connect/tabzip.h
  new file:   storage/connect/unzip.c
  new file:   storage/connect/unzip.h
  new file:   storage/connect/zip.c

storage/connect/CMakeLists.txt

@@ -279,6 +279,18 @@ IF(CONNECT_WITH_JDBC)
   ENDIF()
 ENDIF(CONNECT_WITH_JDBC)
 
+#
+# ZIP
+#
+
+OPTION(CONNECT_WITH_ZIP "Compile CONNECT storage engine with ZIP support" ON)
+
+IF(CONNECT_WITH_ZIP)
+  SET(CONNECT_SOURCES ${CONNECT_SOURCES} filamzip.cpp tabzip.cpp unzip.c ioapi.c zip.c
+    filamzip.h tabzip.h ioapi.h unzip.h zip.h)
+  add_definitions(-DZIP_SUPPORT -DNOCRYPT)
+ENDIF(CONNECT_WITH_ZIP)
+
 
 #
 # XMAP

storage/connect/filamap.cpp

@@ -87,7 +87,7 @@ int MAPFAM::GetFileLength(PGLOBAL g)
   {
   int len;
 
-  len = (To_Fb) ? To_Fb->Length : TXTFAM::GetFileLength(g);
+  len = (To_Fb && To_Fb->Count) ? To_Fb->Length : TXTFAM::GetFileLength(g);
 
   if (trace)
     htrc("Mapped file length=%d\n", len);
@@ -413,7 +413,7 @@ int MAPFAM::DeleteRecords(PGLOBAL g, int irc)
 
   if (Tpos == Spos) {
     /*******************************************************************/
-    /*  First line to delete. Move of eventual preceeding lines is     */
+    /*  First line to delete. Move of eventual preceding lines is     */
     /*  not required here, just setting of future Spos and Tpos.       */
     /*******************************************************************/
     Tpos = Spos = Fpos;
@@ -498,7 +498,7 @@ int MAPFAM::DeleteRecords(PGLOBAL g, int irc)
 void MAPFAM::CloseTableFile(PGLOBAL g, bool)
   {
   PlugCloseFile(g, To_Fb);
-  To_Fb = NULL;              // To get correct file size in Cardinality
+//To_Fb = NULL;              // To get correct file size in Cardinality
 
   if (trace)
     htrc("MAP Close: closing %s count=%d\n",

storage/connect/filamzip.h

+/************** filamzip H Declares Source Code File (.H) **************/
+/*  Name: filamzip.h   Version 1.0                                     */
+/*                                                                     */
+/*  (C) Copyright to the author Olivier BERTRAND          2016         */
+/*                                                                     */
+/*  This file contains the ZIP file access method classes declares.    */
+/***********************************************************************/
+#ifndef __FILAMZIP_H
+#define __FILAMZIP_H
+
+#include "block.h"
+#include "filamap.h"
+#include "unzip.h"
+
+#define DLLEXPORT extern "C"
+
+typedef class ZIPFAM *PZIPFAM;
+typedef class ZPXFAM *PZPXFAM;
+
+/***********************************************************************/
+/*  This is the ZIP file access method.                                */
+/***********************************************************************/
+class DllExport ZIPFAM : public MAPFAM {
+public:
+	// Constructor
+	ZIPFAM(PDOSDEF tdp);
+	ZIPFAM(PZIPFAM txfp);
+
+	// Implementation
+	virtual AMT  GetAmType(void) {return TYPE_AM_ZIP;}
+  virtual PTXF Duplicate(PGLOBAL g) {return (PTXF) new(g) ZIPFAM(this);}
+
+	// Methods
+	virtual int  GetFileLength(PGLOBAL g);
+	virtual int  Cardinality(PGLOBAL g) {return (g) ? 10 : 1;}
+//virtual int  MaxBlkSize(PGLOBAL g, int s) {return s;}
+	virtual bool OpenTableFile(PGLOBAL g);
+	virtual bool DeferReading(void) {return false;}
+  virtual int  ReadBuffer(PGLOBAL g);
+//virtual int  WriteBuffer(PGLOBAL g);
+//virtual int  DeleteRecords(PGLOBAL g, int irc);
+//virtual void CloseTableFile(PGLOBAL g, bool abort);
+	        void close(void);
+
+protected:
+	bool open(PGLOBAL g, const char *filename);
+	bool openEntry(PGLOBAL g);
+	void closeEntry(void);
+	bool WildMatch(PSZ pat, PSZ str);
+	int  findEntry(PGLOBAL g, bool next);
+
+	// Members
+	unzFile         zipfile;							   // The ZIP container file
+	PSZ             zfn;									   // The ZIP file name
+	PSZ             target;									 // The target file name
+	unz_file_info   finfo;									 // The current file info
+//char            fn[FILENAME_MAX];     	 // The current file name
+	bool            entryopen;							 // True when open current entry
+	int             multiple;                // Multiple targets
+	char            mapCaseTable[256];
+}; // end of ZIPFAM
+
+/***********************************************************************/
+/*  This is the fixed ZIP file access method.                          */
+/***********************************************************************/
+class DllExport ZPXFAM : public ZIPFAM {
+public:
+	// Constructor
+	ZPXFAM(PDOSDEF tdp);
+	ZPXFAM(PZPXFAM txfp);
+
+	// Implementation
+	virtual PTXF Duplicate(PGLOBAL g) {return (PTXF) new(g) ZPXFAM(this);}
+
+	// Methods
+	virtual int  ReadBuffer(PGLOBAL g);
+
+protected:
+	// Members
+	int Lrecl;
+}; // end of ZPXFAM
+
+#endif // __FILAMZIP_H

storage/connect/ha_connect.cc

@@ -171,9 +171,9 @@
 #define JSONMAX      10             // JSON Default max grp size
 
 extern "C" {
-       char version[]= "Version 1.04.0008 October 20, 2016";
+       char version[]= "Version 1.04.0009 December 09, 2016";
 #if defined(__WIN__)
-       char compver[]= "Version 1.04.0008 " __DATE__ " "  __TIME__;
+       char compver[]= "Version 1.04.0009 " __DATE__ " "  __TIME__;
        char slash= '\\';
 #else   // !__WIN__
        char slash= '/';
@@ -4165,7 +4165,8 @@ bool ha_connect::check_privileges(THD *thd, PTOS options, char *dbn, bool quick)
     case TAB_DIR:
     case TAB_MAC:
     case TAB_WMI:
-    case TAB_OEM:
+		case TAB_ZIP:
+		case TAB_OEM:
 #ifdef NO_EMBEDDED_ACCESS_CHECKS
       return false;
 #endif
@@ -5173,13 +5174,13 @@ static int connect_assisted_discovery(handlerton *, THD* thd,
   char        v=0, spc= ',', qch= 0;
   const char *fncn= "?";
   const char *user, *fn, *db, *host, *pwd, *sep, *tbl, *src;
-  const char *col, *ocl, *rnk, *pic, *fcl, *skc;
+  const char *col, *ocl, *rnk, *pic, *fcl, *skc, *zfn;
   char       *tab, *dsn, *shm, *dpath; 
 #if defined(__WIN__)
   char       *nsp= NULL, *cls= NULL;
 #endif   // __WIN__
-  int         port= 0, hdr= 0, mxr= 0, mxe= 0, rc= 0;
-  int         cop __attribute__((unused))= 0, lrecl= 0;
+//int         hdr, mxe;
+	int         port = 0, mxr = 0, rc = 0, mul = 0, lrecl = 0;
 #if defined(ODBC_SUPPORT)
   POPARM      sop= NULL;
   char       *ucnc= NULL;
@@ -5211,7 +5212,7 @@ static int connect_assisted_discovery(handlerton *, THD* thd,
   if (!g)
     return HA_ERR_INTERNAL_ERROR;
 
-  user= host= pwd= tbl= src= col= ocl= pic= fcl= skc= rnk= dsn= NULL;
+  user= host= pwd= tbl= src= col= ocl= pic= fcl= skc= rnk= zfn= dsn= NULL;
 
   // Get the useful create options
   ttp= GetTypeID(topt->type);
@@ -5224,7 +5225,7 @@ static int connect_assisted_discovery(handlerton *, THD* thd,
   sep= topt->separator;
   spc= (!sep) ? ',' : *sep;
   qch= topt->qchar ? *topt->qchar : (signed)topt->quoted >= 0 ? '"' : 0;
-  hdr= (int)topt->header;
+	mul = (int)topt->multiple;
 	tbl= topt->tablist;
   col= topt->colist;
 
@@ -5260,11 +5261,13 @@ static int connect_assisted_discovery(handlerton *, THD* thd,
 //	prop = GetListOption(g, "Properties", topt->oplist, NULL);
 		tabtyp = GetListOption(g, "Tabtype", topt->oplist, NULL);
 #endif   // JDBC_SUPPORT
-    mxe= atoi(GetListOption(g,"maxerr", topt->oplist, "0"));
 #if defined(PROMPT_OK)
     cop= atoi(GetListOption(g, "checkdsn", topt->oplist, "0"));
 #endif   // PROMPT_OK
-  } else {
+#if defined(ZIP_SUPPORT)
+		zfn = GetListOption(g, "Zipfile", topt->oplist, NULL);
+#endif   // ZIP_SUPPORT
+	} else {
     host= "localhost";
     user= (ttp == TAB_ODBC ? NULL : "root");
   } // endif option_list
@@ -5471,7 +5474,7 @@ static int connect_assisted_discovery(handlerton *, THD* thd,
     case TAB_XML:
 #endif   // LIBXML2_SUPPORT  ||         DOMDOC_SUPPORT
     case TAB_JSON:
-      if (!fn)
+      if (!fn && !zfn && !mul)
         sprintf(g->Message, "Missing %s file name", topt->type);
       else
         ok= true;
@@ -5585,7 +5588,7 @@ static int connect_assisted_discovery(handlerton *, THD* thd,
                        NULL, port, fnc == FNC_COL);
         break;
       case TAB_CSV:
-        qrp= CSVColumns(g, dpath, fn, spc, qch, hdr, mxe, fnc == FNC_COL);
+				qrp = CSVColumns(g, dpath, topt, fnc == FNC_COL);
         break;
 #if defined(__WIN__)
       case TAB_WMI:

storage/connect/ioapi.c

+/* ioapi.h -- IO base function header for compress/uncompress .zip
+   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications for Zip64 support
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+
+         For more info read MiniZip_info.txt
+
+*/
+
+#if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS)))
+        #define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#if defined(__APPLE__) || defined(IOAPI_NO_64)
+// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
+#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
+#define FTELLO_FUNC(stream) ftello(stream)
+#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
+#else
+#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
+#define FTELLO_FUNC(stream) ftello64(stream)
+#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
+#endif
+
+
+#include "ioapi.h"
+
+voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode)
+{
+    if (pfilefunc->zfile_func64.zopen64_file != NULL)
+        return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
+    else
+    {
+        return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
+    }
+}
+
+long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin)
+{
+    if (pfilefunc->zfile_func64.zseek64_file != NULL)
+        return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
+    else
+    {
+        uLong offsetTruncated = (uLong)offset;
+        if (offsetTruncated != offset)
+            return -1;
+        else
+            return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
+    }
+}
+
+ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream)
+{
+    if (pfilefunc->zfile_func64.zseek64_file != NULL)
+        return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
+    else
+    {
+        uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
+        if ((tell_uLong) == MAXU32)
+            return (ZPOS64_T)-1;
+        else
+            return tell_uLong;
+    }
+}
+
+void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32)
+{
+    p_filefunc64_32->zfile_func64.zopen64_file = NULL;
+    p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
+    p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
+    p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
+    p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
+    p_filefunc64_32->zfile_func64.ztell64_file = NULL;
+    p_filefunc64_32->zfile_func64.zseek64_file = NULL;
+    p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
+    p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
+    p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
+    p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
+    p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
+}
+
+
+
+static voidpf  ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));
+static uLong   ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
+static uLong   ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size));
+static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));
+static long    ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
+static int     ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));
+static int     ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));
+
+static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)
+{
+    FILE* file = NULL;
+    const char* mode_fopen = NULL;
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
+        mode_fopen = "rb";
+    else
+    if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+        mode_fopen = "r+b";
+    else
+    if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+        mode_fopen = "wb";
+
+    if ((filename!=NULL) && (mode_fopen != NULL))
+        file = fopen(filename, mode_fopen);
+    return file;
+}
+
+static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
+{
+    FILE* file = NULL;
+    const char* mode_fopen = NULL;
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
+        mode_fopen = "rb";
+    else
+    if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+        mode_fopen = "r+b";
+    else
+    if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+        mode_fopen = "wb";
+
+    if ((filename!=NULL) && (mode_fopen != NULL))
+        file = FOPEN_FUNC((const char*)filename, mode_fopen);
+    return file;
+}
+
+
+static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)
+{
+    uLong ret;
+    ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
+    return ret;
+}
+
+static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)
+{
+    uLong ret;
+    ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
+    return ret;
+}
+
+static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
+{
+    long ret;
+    ret = ftell((FILE *)stream);
+    return ret;
+}
+
+
+static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)
+{
+    ZPOS64_T ret;
+    ret = FTELLO_FUNC((FILE *)stream);
+    return ret;
+}
+
+static long ZCALLBACK fseek_file_func (voidpf  opaque, voidpf stream, uLong offset, int origin)
+{
+    int fseek_origin=0;
+    long ret;
+    switch (origin)
+    {
+    case ZLIB_FILEFUNC_SEEK_CUR :
+        fseek_origin = SEEK_CUR;
+        break;
+    case ZLIB_FILEFUNC_SEEK_END :
+        fseek_origin = SEEK_END;
+        break;
+    case ZLIB_FILEFUNC_SEEK_SET :
+        fseek_origin = SEEK_SET;
+        break;
+    default: return -1;
+    }
+    ret = 0;
+    if (fseek((FILE *)stream, offset, fseek_origin) != 0)
+        ret = -1;
+    return ret;
+}
+
+static long ZCALLBACK fseek64_file_func (voidpf  opaque, voidpf stream, ZPOS64_T offset, int origin)
+{
+    int fseek_origin=0;
+    long ret;
+    switch (origin)
+    {
+    case ZLIB_FILEFUNC_SEEK_CUR :
+        fseek_origin = SEEK_CUR;
+        break;
+    case ZLIB_FILEFUNC_SEEK_END :
+        fseek_origin = SEEK_END;
+        break;
+    case ZLIB_FILEFUNC_SEEK_SET :
+        fseek_origin = SEEK_SET;
+        break;
+    default: return -1;
+    }
+    ret = 0;
+
+    if(FSEEKO_FUNC((FILE *)stream, offset, fseek_origin) != 0)
+                        ret = -1;
+
+    return ret;
+}
+
+
+static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)
+{
+    int ret;
+    ret = fclose((FILE *)stream);
+    return ret;
+}
+
+static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)
+{
+    int ret;
+    ret = ferror((FILE *)stream);
+    return ret;
+}
+
+void fill_fopen_filefunc (pzlib_filefunc_def)
+  zlib_filefunc_def* pzlib_filefunc_def;
+{
+    pzlib_filefunc_def->zopen_file = fopen_file_func;
+    pzlib_filefunc_def->zread_file = fread_file_func;
+    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
+    pzlib_filefunc_def->ztell_file = ftell_file_func;
+    pzlib_filefunc_def->zseek_file = fseek_file_func;
+    pzlib_filefunc_def->zclose_file = fclose_file_func;
+    pzlib_filefunc_def->zerror_file = ferror_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+void fill_fopen64_filefunc (zlib_filefunc64_def*  pzlib_filefunc_def)
+{
+    pzlib_filefunc_def->zopen64_file = fopen64_file_func;
+    pzlib_filefunc_def->zread_file = fread_file_func;
+    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
+    pzlib_filefunc_def->ztell64_file = ftell64_file_func;
+    pzlib_filefunc_def->zseek64_file = fseek64_file_func;
+    pzlib_filefunc_def->zclose_file = fclose_file_func;
+    pzlib_filefunc_def->zerror_file = ferror_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}

storage/connect/ioapi.h

+/* ioapi.h -- IO base function header for compress/uncompress .zip
+   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications for Zip64 support
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+
+         For more info read MiniZip_info.txt
+
+         Changes
+
+    Oct-2009 - Defined ZPOS64_T to fpos_t on windows and u_int64_t on linux. (might need to find a better why for this)
+    Oct-2009 - Change to fseeko64, ftello64 and fopen64 so large files would work on linux.
+               More if/def section may be needed to support other platforms
+    Oct-2009 - Defined fxxxx64 calls to normal fopen/ftell/fseek so they would compile on windows.
+                          (but you should use iowin32.c for windows instead)
+
+*/
+
+#ifndef _ZLIBIOAPI64_H
+#define _ZLIBIOAPI64_H
+
+#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))
+
+  // Linux needs this to support file operation on files larger then 4+GB
+  // But might need better if/def to select just the platforms that needs them.
+
+        #ifndef __USE_FILE_OFFSET64
+                #define __USE_FILE_OFFSET64
+        #endif
+        #ifndef __USE_LARGEFILE64
+                #define __USE_LARGEFILE64
+        #endif
+        #ifndef _LARGEFILE64_SOURCE
+                #define _LARGEFILE64_SOURCE
+        #endif
+        #ifndef _FILE_OFFSET_BIT
+                #define _FILE_OFFSET_BIT 64
+        #endif
+
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "zlib.h"
+
+#if defined(USE_FILE32API)
+#define fopen64 fopen
+#define ftello64 ftell
+#define fseeko64 fseek
+#else
+#ifdef __FreeBSD__
+#define fopen64 fopen
+#define ftello64 ftello
+#define fseeko64 fseeko
+#endif
+#ifdef _MSC_VER
+ #define fopen64 fopen
+ #if (_MSC_VER >= 1400) && (!(defined(NO_MSCVER_FILE64_FUNC)))
+  #define ftello64 _ftelli64
+  #define fseeko64 _fseeki64
+ #else // old MSC
+  #define ftello64 ftell
+  #define fseeko64 fseek
+ #endif
+#endif
+#endif
+
+/*
+#ifndef ZPOS64_T
+  #ifdef _WIN32
+                #define ZPOS64_T fpos_t
+  #else
+    #include <stdint.h>
+    #define ZPOS64_T uint64_t
+  #endif
+#endif
+*/
+
+#ifdef HAVE_MINIZIP64_CONF_H
+#include "mz64conf.h"
+#endif
+
+/* a type choosen by DEFINE */
+#ifdef HAVE_64BIT_INT_CUSTOM
+typedef  64BIT_INT_CUSTOM_TYPE ZPOS64_T;
+#else
+#ifdef HAS_STDINT_H
+#include "stdint.h"
+typedef uint64_t ZPOS64_T;
+#else
+
+/* Maximum unsigned 32-bit value used as placeholder for zip64 */
+#define MAXU32 0xffffffff
+
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+typedef unsigned __int64 ZPOS64_T;
+#else
+typedef unsigned long long int ZPOS64_T;
+#endif
+#endif
+#endif
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define ZLIB_FILEFUNC_SEEK_CUR (1)
+#define ZLIB_FILEFUNC_SEEK_END (2)
+#define ZLIB_FILEFUNC_SEEK_SET (0)
+
+#define ZLIB_FILEFUNC_MODE_READ      (1)
+#define ZLIB_FILEFUNC_MODE_WRITE     (2)
+#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)
+
+#define ZLIB_FILEFUNC_MODE_EXISTING (4)
+#define ZLIB_FILEFUNC_MODE_CREATE   (8)
+
+
+#ifndef ZCALLBACK
+ #if (defined(WIN32) || defined(_WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
+   #define ZCALLBACK CALLBACK
+ #else
+   #define ZCALLBACK
+ #endif
+#endif
+
+
+
+
+typedef voidpf   (ZCALLBACK *open_file_func)      OF((voidpf opaque, const char* filename, int mode));
+typedef uLong    (ZCALLBACK *read_file_func)      OF((voidpf opaque, voidpf stream, void* buf, uLong size));
+typedef uLong    (ZCALLBACK *write_file_func)     OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
+typedef int      (ZCALLBACK *close_file_func)     OF((voidpf opaque, voidpf stream));
+typedef int      (ZCALLBACK *testerror_file_func) OF((voidpf opaque, voidpf stream));
+
+typedef long     (ZCALLBACK *tell_file_func)      OF((voidpf opaque, voidpf stream));
+typedef long     (ZCALLBACK *seek_file_func)      OF((voidpf opaque, voidpf stream, uLong offset, int origin));
+
+
+/* here is the "old" 32 bits structure structure */
+typedef struct zlib_filefunc_def_s
+{
+    open_file_func      zopen_file;
+    read_file_func      zread_file;
+    write_file_func     zwrite_file;
+    tell_file_func      ztell_file;
+    seek_file_func      zseek_file;
+    close_file_func     zclose_file;
+    testerror_file_func zerror_file;
+    voidpf              opaque;
+} zlib_filefunc_def;
+
+typedef ZPOS64_T (ZCALLBACK *tell64_file_func)    OF((voidpf opaque, voidpf stream));
+typedef long     (ZCALLBACK *seek64_file_func)    OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
+typedef voidpf   (ZCALLBACK *open64_file_func)    OF((voidpf opaque, const void* filename, int mode));
+
+typedef struct zlib_filefunc64_def_s
+{
+    open64_file_func    zopen64_file;
+    read_file_func      zread_file;
+    write_file_func     zwrite_file;
+    tell64_file_func    ztell64_file;
+    seek64_file_func    zseek64_file;
+    close_file_func     zclose_file;
+    testerror_file_func zerror_file;
+    voidpf              opaque;
+} zlib_filefunc64_def;
+
+void fill_fopen64_filefunc OF((zlib_filefunc64_def* pzlib_filefunc_def));
+void fill_fopen_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
+
+/* now internal definition, only for zip.c and unzip.h */
+typedef struct zlib_filefunc64_32_def_s
+{
+    zlib_filefunc64_def zfile_func64;
+    open_file_func      zopen32_file;
+    tell_file_func      ztell32_file;
+    seek_file_func      zseek32_file;
+} zlib_filefunc64_32_def;
+
+
+#define ZREAD64(filefunc,filestream,buf,size)     ((*((filefunc).zfile_func64.zread_file))   ((filefunc).zfile_func64.opaque,filestream,buf,size))
+#define ZWRITE64(filefunc,filestream,buf,size)    ((*((filefunc).zfile_func64.zwrite_file))  ((filefunc).zfile_func64.opaque,filestream,buf,size))
+//#define ZTELL64(filefunc,filestream)            ((*((filefunc).ztell64_file)) ((filefunc).opaque,filestream))
+//#define ZSEEK64(filefunc,filestream,pos,mode)   ((*((filefunc).zseek64_file)) ((filefunc).opaque,filestream,pos,mode))
+#define ZCLOSE64(filefunc,filestream)             ((*((filefunc).zfile_func64.zclose_file))  ((filefunc).zfile_func64.opaque,filestream))
+#define ZERROR64(filefunc,filestream)             ((*((filefunc).zfile_func64.zerror_file))  ((filefunc).zfile_func64.opaque,filestream))
+
+voidpf call_zopen64 OF((const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode));
+long    call_zseek64 OF((const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin));
+ZPOS64_T call_ztell64 OF((const zlib_filefunc64_32_def* pfilefunc,voidpf filestream));
+
+void    fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32);
+
+#define ZOPEN64(filefunc,filename,mode)         (call_zopen64((&(filefunc)),(filename),(mode)))
+#define ZTELL64(filefunc,filestream)            (call_ztell64((&(filefunc)),(filestream)))
+#define ZSEEK64(filefunc,filestream,pos,mode)   (call_zseek64((&(filefunc)),(filestream),(pos),(mode)))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

storage/connect/mycat.cc

@@ -16,7 +16,7 @@
 /*************** Mycat CC Program Source Code File (.CC) ***************/
 /* PROGRAM NAME: MYCAT                                                 */
 /* -------------                                                       */
-/*  Version 1.4                                                        */
+/*  Version 1.5                                                        */
 /*                                                                     */
 /*  Author: Olivier Bertrand                       2012 - 2016         */
 /*                                                                     */
@@ -95,6 +95,9 @@
 #if defined(XML_SUPPORT)
 #include "tabxml.h"
 #endif   // XML_SUPPORT
+#if defined(ZIP_SUPPORT)
+#include "tabzip.h"
+#endif   // ZIP_SUPPORT
 #include "mycat.h"
 
 /***********************************************************************/
@@ -154,7 +157,10 @@ TABTYPE GetTypeID(const char *type)
 #endif
                  : (!stricmp(type, "VIR"))   ? TAB_VIR
                  : (!stricmp(type, "JSON"))  ? TAB_JSON
-                 : (!stricmp(type, "OEM"))   ? TAB_OEM : TAB_NIY;
+#ifdef ZIP_SUPPORT
+								 : (!stricmp(type, "ZIP"))   ? TAB_ZIP
+#endif
+								 : (!stricmp(type, "OEM"))   ? TAB_OEM : TAB_NIY;
   } // end of GetTypeID
 
 /***********************************************************************/
@@ -175,6 +181,7 @@ bool IsFileType(TABTYPE type)
     case TAB_INI:
     case TAB_VEC:
     case TAB_JSON:
+//	case TAB_ZIP:
       isfile= true;
       break;
     default:
@@ -575,7 +582,10 @@ PRELDEF MYCAT::MakeTableDesc(PGLOBAL g, PTABLE tablep, LPCSTR am)
 #endif   // PIVOT_SUPPORT
     case TAB_VIR: tdp= new(g) VIRDEF;   break;
     case TAB_JSON: tdp= new(g) JSONDEF; break;
-    default:
+#if defined(ZIP_SUPPORT)
+		case TAB_ZIP: tdp= new(g) ZIPDEF;   break;
+#endif   // ZIP_SUPPORT
+		default:
 			sprintf(g->Message, MSG(BAD_TABLE_TYPE), am, name);
     } // endswitch
 

storage/connect/plgdbsem.h

 /************** PlgDBSem H Declares Source Code File (.H) **************/
-/*  Name: PLGDBSEM.H  Version 3.6                                      */
+/*  Name: PLGDBSEM.H  Version 3.7                                      */
 /*                                                                     */
-/*  (C) Copyright to the author Olivier BERTRAND          1998-2015    */
+/*  (C) Copyright to the author Olivier BERTRAND          1998-2016    */
 /*                                                                     */
-/*  This file contains the PlugDB++ application type definitions.      */
+/*  This file contains the CONNECT storage engine definitions.         */
 /***********************************************************************/
 
 /***********************************************************************/
@@ -49,7 +49,8 @@ enum BLKTYP {TYPE_TABLE      = 50,    /* Table Name/Srcdef/... Block   */
              TYPE_FB_MAP     = 23,    /* Mapped file block (storage)   */
              TYPE_FB_HANDLE  = 24,    /* File block (handle)           */
              TYPE_FB_XML     = 21,    /* DOM XML file block            */
-             TYPE_FB_XML2    = 27};   /* libxml2 XML file block        */
+             TYPE_FB_XML2    = 27,    /* libxml2 XML file block        */
+             TYPE_FB_ZIP     = 28};   /* ZIP file block                */
 
 enum TABTYPE {TAB_UNDEF =  0,   /* Table of undefined type             */
               TAB_DOS   =  1,   /* Fixed column offset, variable LRECL */
@@ -78,7 +79,8 @@ enum TABTYPE {TAB_UNDEF =  0,   /* Table of undefined type             */
               TAB_JCT   = 24,   /* Junction tables NIY                 */
               TAB_DMY   = 25,   /* DMY Dummy tables NIY                */
 							TAB_JDBC  = 26,   /* Table accessed via JDBC             */
-							TAB_NIY   = 27};  /* Table not implemented yet           */
+							TAB_ZIP   = 27,   /* ZIP file info table                 */
+							TAB_NIY   = 28};  /* Table not implemented yet           */
 
 enum AMT {TYPE_AM_ERROR =   0,        /* Type not defined              */
           TYPE_AM_ROWID =   1,        /* ROWID type (special column)   */
@@ -140,7 +142,8 @@ enum AMT {TYPE_AM_ERROR =   0,        /* Type not defined              */
           TYPE_AM_MYSQL = 192,        /* MYSQL access method type no   */
           TYPE_AM_MYX   = 193,        /* MYSQL EXEC access method type */
           TYPE_AM_CAT   = 195,        /* Catalog access method type no */
-          TYPE_AM_OUT   = 200};       /* Output relations (storage)    */
+					TYPE_AM_ZIP   = 198,				/* ZIP access method type no     */
+					TYPE_AM_OUT   = 200};       /* Output relations (storage)    */
 
 enum RECFM {RECFM_NAF   =    -2,      /* Not a file                    */
             RECFM_OEM   =    -1,      /* OEM file access method        */

storage/connect/plgdbutl.cpp

@@ -68,6 +68,9 @@
 #include "tabcol.h"    // header of XTAB and COLUMN classes
 #include "valblk.h"
 #include "rcmsg.h"
+#ifdef ZIP_SUPPORT
+#include "filamzip.h"
+#endif   // ZIP_SUPPORT
 
 /***********************************************************************/
 /*  DB static variables.                                               */
@@ -934,7 +937,16 @@ int PlugCloseFile(PGLOBAL g __attribute__((unused)), PFBLOCK fp, bool all)
       CloseXML2File(g, fp, all);
       break;
 #endif   // LIBXML2_SUPPORT
-    default:
+#ifdef ZIP_SUPPORT
+		case TYPE_FB_ZIP:
+			((PZIPFAM)fp->File)->close();
+			fp->Memory = NULL;
+			fp->Mode = MODE_ANY;
+			fp->Count = 0;
+			fp->File = NULL;
+			break;
+#endif   // ZIP_SUPPORT
+		default:
       rc = RC_FX;
     } // endswitch Type
 

storage/connect/tabdos.cpp

 /************* TabDos C++ Program Source Code File (.CPP) **************/
 /* PROGRAM NAME: TABDOS                                                */
 /* -------------                                                       */
-/*  Version 4.9.1                                                      */
+/*  Version 4.9.2                                                      */
 /*                                                                     */
 /* COPYRIGHT:                                                          */
 /* ----------                                                          */
@@ -54,6 +54,9 @@
 #if defined(GZ_SUPPORT)
 #include "filamgz.h"
 #endif   // GZ_SUPPORT
+#if defined(ZIP_SUPPORT)
+#include "filamzip.h"
+#endif   // ZIP_SUPPORT
 #include "tabdos.h"
 #include "tabfix.h"
 #include "tabmul.h"
@@ -93,6 +96,7 @@ DOSDEF::DOSDEF(void)
   Pseudo = 3;
   Fn = NULL;
   Ofn = NULL;
+	Zipfn = NULL;
   To_Indx = NULL;
   Recfm = RECFM_VAR;
   Mapped = false;
@@ -126,7 +130,20 @@ bool DOSDEF::DefineAM(PGLOBAL g, LPCSTR am, int)
              : (am && (*am == 'B' || *am == 'b')) ? "B"
              : (am && !stricmp(am, "DBF"))        ? "D" : "V";
 
-  Desc = Fn = GetStringCatInfo(g, "Filename", NULL);
+	if (*dfm != 'D')
+		Zipfn = GetStringCatInfo(g, "Zipfile", NULL);
+
+	if (Zipfn && Multiple) {
+		// Prevent Fn to default to table name
+		Desc = GetStringCatInfo(g, "Filename", NULL);
+		Fn = GetStringCatInfo(g, "Filename", "<%>");
+
+		if (!strcmp(Fn, "<%>"))
+			Fn = NULL;
+
+	} else
+	  Desc = Fn = GetStringCatInfo(g, "Filename", NULL);
+
   Ofn = GetStringCatInfo(g, "Optname", Fn);
   GetCharCatInfo("Recfm", (PSZ)dfm, buf, sizeof(buf));
   Recfm = (toupper(*buf) == 'F') ? RECFM_FIX :
@@ -333,7 +350,20 @@ PTDB DOSDEF::GetTable(PGLOBAL g, MODE mode)
   /*  Allocate table and file processing class of the proper type.     */
   /*  Column blocks will be allocated only when needed.                */
   /*********************************************************************/
-  if (Recfm == RECFM_DBF) {
+	if (Zipfn) {
+#if defined(ZIP_SUPPORT)
+		if (Recfm == RECFM_VAR)
+		  txfp = new(g) ZIPFAM(this);
+		else
+			txfp = new(g) ZPXFAM(this);
+
+		tdbp = new(g) TDBDOS(this, txfp);
+		return tdbp;
+#else   // !ZIP_SUPPORT
+		strcpy(g->Message, "ZIP not supported");
+		return NULL;
+#endif  // !ZIP_SUPPORT
+	} else if (Recfm == RECFM_DBF) {
     if (Catfunc == FNC_NO) {
       if (map)
         txfp = new(g) DBMFAM(this);

storage/connect/tabdos.h

@@ -28,6 +28,7 @@ class DllExport DOSDEF : public TABDEF {  /* Logical table description */
   friend class TDBFIX;
   friend class TXTFAM;
   friend class DBFBASE;
+	friend class ZIPFAM;
  public:
   // Constructor
   DOSDEF(void);
@@ -58,7 +59,7 @@ class DllExport DOSDEF : public TABDEF {  /* Logical table description */
 
   // Methods
   virtual int  Indexable(void)
-          {return (!Multiple && Compressed != 1) ? 1 : 0;}
+          {return (!Multiple && !Zipfn && Compressed != 1) ? 1 : 0;}
   virtual bool DeleteIndexFile(PGLOBAL g, PIXDEF pxdf);
   virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff);
   virtual PTDB GetTable(PGLOBAL g, MODE mode);
@@ -72,7 +73,8 @@ class DllExport DOSDEF : public TABDEF {  /* Logical table description */
   // Members
   PSZ     Fn;                 /* Path/Name of corresponding file       */
   PSZ     Ofn;                /* Base Path/Name of matching index files*/
-  PIXDEF  To_Indx;            /* To index definitions blocks           */
+	PSZ     Zipfn;						  /* Zip container name										 */
+	PIXDEF  To_Indx;            /* To index definitions blocks           */
   RECFM   Recfm;              /* 0:VAR, 1:FIX, 2:BIN, 3:VCT, 6:DBF     */
   bool    Mapped;             /* 0: disk file, 1: memory mapped file   */
   bool    Padded;             /* true for padded table file            */

storage/connect/tabfmt.cpp

 /************* TabFmt C++ Program Source Code File (.CPP) **************/
 /* PROGRAM NAME: TABFMT                                                */
 /* -------------                                                       */
-/*  Version 3.9.1                                                      */
+/*  Version 3.9.2                                                      */
 /*                                                                     */
 /* COPYRIGHT:                                                          */
 /* ----------                                                          */
@@ -54,6 +54,9 @@
 #if defined(GZ_SUPPORT)
 #include "filamgz.h"
 #endif   // GZ_SUPPORT
+#if defined(ZIP_SUPPORT)
+#include "filamzip.h"
+#endif   // ZIP_SUPPORT
 #include "tabfmt.h"
 #include "tabmul.h"
 #define  NO_FUNC
@@ -78,20 +81,24 @@ USETEMP UseTemp(void);
 /* of types (TYPE_STRING < TYPE_DOUBLE < TYPE_INT) (1 < 2 < 7).        */
 /* If these values are changed, this will have to be revisited.        */
 /***********************************************************************/
-PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
-                   char q, int hdr, int mxr, bool info)
+PQRYRES CSVColumns(PGLOBAL g, char *dp, PTOS topt, bool info)
   {
   static int  buftyp[] = {TYPE_STRING, TYPE_SHORT, TYPE_STRING,
                           TYPE_INT,   TYPE_INT, TYPE_SHORT};
   static XFLD fldtyp[] = {FLD_NAME, FLD_TYPE,   FLD_TYPENAME,
                           FLD_PREC, FLD_LENGTH, FLD_SCALE};
   static unsigned int length[] = {6, 6, 8, 10, 10, 6};
-  char   *p, *colname[MAXCOL], dechar, filename[_MAX_PATH], buf[4096];
+	const char *fn;
+	char    sep, q;
+	int     rc, mxr;
+	bool    hdr;
+  char   *p, *colname[MAXCOL], dechar, buf[8];
   int     i, imax, hmax, n, nerr, phase, blank, digit, dec, type;
   int     ncol = sizeof(buftyp) / sizeof(int);
   int     num_read = 0, num_max = 10000000;     // Statistics
   int     len[MAXCOL], typ[MAXCOL], prc[MAXCOL];
-  FILE   *infile;
+	PCSVDEF tdp;
+	PTDBCSV tdbp;
   PQRYRES qrp;
   PCOLRES crp;
 
@@ -102,26 +109,7 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
     } // endif info
 
 //      num_max = atoi(p+1);             // Max num of record to test
-#if defined(__WIN__)
-  if (sep == ',' || strnicmp(setlocale(LC_NUMERIC, NULL), "French", 6))
-    dechar = '.';
-  else
-    dechar = ',';
-#else   // !__WIN__
-  dechar = '.';
-#endif  // !__WIN__
-
-  if (trace)
-    htrc("File %s sep=%c q=%c hdr=%d mxr=%d\n",
-          SVP(fn), sep, q, hdr, mxr);
-
-  if (!fn) {
-    strcpy(g->Message, MSG(MISSING_FNAME));
-    return NULL;
-    } // endif fn
-
   imax = hmax = nerr = 0;
-  mxr = MY_MAX(0, mxr);
 
   for (i = 0; i < MAXCOL; i++) {
     colname[i] = NULL;
@@ -131,12 +119,73 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
     } // endfor i
 
   /*********************************************************************/
-  /*  Open the input file.                                             */
+  /*  Get the CSV table description block.                             */
   /*********************************************************************/
-  PlugSetPath(filename, fn, dp);
+	tdp = new(g) CSVDEF;
+#if defined(ZIP_SUPPORT)
+	tdp->Zipfn = GetStringTableOption(g, topt, "Zipfile", NULL);
+	tdp->Multiple = GetIntegerTableOption(g, topt, "Multiple", 0);
+#endif   // ZIP_SUPPORT
+	tdp->Fn = GetStringTableOption(g, topt, "Filename", NULL);
+
+	if (!tdp->Fn && !tdp->Zipfn && !tdp->Multiple) {
+		strcpy(g->Message, MSG(MISSING_FNAME));
+		return NULL;
+	} // endif Fn
+
+	fn = (tdp->Fn) ? tdp->Fn : "unnamed";
+
+	if (!(tdp->Lrecl = GetIntegerTableOption(g, topt, "Lrecl", 0)))
+		tdp->Lrecl = 4096;
 
-  if (!(infile= global_fopen(g, MSGID_CANNOT_OPEN, filename, "r")))
-    return NULL;
+	p = GetStringTableOption(g, topt, "Separator", ",");
+	tdp->Sep = (strlen(p) == 2 && p[0] == '\\' && p[1] == 't') ? '\t' : *p;
+
+#if defined(__WIN__)
+	if (tdp->Sep == ',' || strnicmp(setlocale(LC_NUMERIC, NULL), "French", 6))
+		dechar = '.';
+	else
+		dechar = ',';
+#else   // !__WIN__
+	dechar = '.';
+#endif  // !__WIN__
+
+	sep = tdp->Sep;
+	tdp->Quoted = GetIntegerTableOption(g, topt, "Quoted", -1);
+	p = GetStringTableOption(g, topt, "Qchar", "");
+	tdp->Qot = *p;
+
+	if (tdp->Qot && tdp->Quoted < 0)
+		tdp->Quoted = 0;
+	else if (!tdp->Qot && tdp->Quoted >= 0)
+		tdp->Qot = '"';
+
+	q = tdp->Qot;
+	hdr = GetBooleanTableOption(g, topt, "Header", false);
+	tdp->Maxerr = GetIntegerTableOption(g, topt, "Maxerr", 0);
+	tdp->Accept = GetBooleanTableOption(g, topt, "Accept", false);
+
+	if (tdp->Accept && tdp->Maxerr == 0)
+		tdp->Maxerr = INT_MAX32;       // Accept all bad lines
+
+	mxr = MY_MAX(0, tdp->Maxerr);
+
+	if (trace)
+		htrc("File %s Sep=%c Qot=%c Header=%d maxerr=%d\n",
+		SVP(tdp->Fn), tdp->Sep, tdp->Qot, tdp->Header, tdp->Maxerr);
+
+	if (tdp->Zipfn)
+		tdbp = new(g) TDBCSV(tdp, new(g) ZIPFAM(tdp));
+	else
+		tdbp = new(g) TDBCSV(tdp, new(g) DOSFAM(tdp));
+
+	tdbp->SetMode(MODE_READ);
+
+	/*********************************************************************/
+	/*  Open the CSV file.                                               */
+	/*********************************************************************/
+	if (tdbp->OpenDB(g))
+		return NULL;
 
   if (hdr) {
     /*******************************************************************/
@@ -144,16 +193,8 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
     /*******************************************************************/
     phase = 0;
 
-    if (fgets(buf, sizeof(buf), infile)) {
-      n = strlen(buf) + 1;
-      buf[n - 2] = '\0';
-#if !defined(__WIN__)
-      // The file can be imported from Windows
-      if (buf[n - 3] == '\r')
-        buf[n - 3] = 0;
-#endif   // UNIX
-      p = (char*)PlugSubAlloc(g, NULL, n);
-      memcpy(p, buf, n);
+    if ((rc = tdbp->ReadDB(g)) == RC_OK) {
+			p = PlgDBDup(g, tdbp->To_Line);
 
       //skip leading blanks
       for (; *p == ' '; p++) ;
@@ -165,10 +206,11 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
         } // endif q
 
       colname[0] = p;
-    } else {
+    } else if (rc == RC_EF) {
       sprintf(g->Message, MSG(FILE_IS_EMPTY), fn);
       goto err;
-    } // endif's
+		} else
+			goto err;
 
     for (i = 1; *p; p++)
       if (phase == 1 && *p == q) {
@@ -201,15 +243,8 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
     /*******************************************************************/
     /*  Now start the reading process. Read one line.                  */
     /*******************************************************************/
-    if (fgets(buf, sizeof(buf), infile)) {
-      n = strlen(buf);
-      buf[n - 1] = '\0';
-#if !defined(__WIN__)
-      // The file can be imported from Windows
-      if (buf[n - 2] == '\r')
-        buf[n - 2] = 0;
-#endif   // UNIX
-    } else if (feof(infile)) {
+		if ((rc = tdbp->ReadDB(g)) == RC_OK) {
+    } else if (rc == RC_EF) {
       sprintf(g->Message, MSG(EOF_AFTER_LINE), num_read -1);
       break;
     } else {
@@ -222,7 +257,7 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
     /*******************************************************************/
     i = n = phase = blank = digit = dec = 0;
 
-    for (p = buf; *p; p++)
+    for (p = tdbp->To_Line; *p; p++)
       if (*p == sep) {
         if (phase != 1) {
           if (i == MAXCOL - 1) {
@@ -331,7 +366,7 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
     htrc("\n");
   } // endif trace
 
-  fclose(infile);
+	tdbp->CloseDB(g);
 
  skipit:
   if (trace)
@@ -381,7 +416,7 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
   return qrp;
 
  err:
-  fclose(infile);
+  tdbp->CloseDB(g);
   return NULL;
   } // end of CSVCColumns
 
@@ -458,7 +493,21 @@ PTDB CSVDEF::GetTable(PGLOBAL g, MODE mode)
     /*******************************************************************/
     /*  Allocate a file processing class of the proper type.           */
     /*******************************************************************/
-    if (map) {
+		if (Zipfn) {
+#if defined(ZIP_SUPPORT)
+			txfp = new(g) ZIPFAM(this);
+
+			if (!Fmtd)
+				tdbp = new(g) TDBCSV(this, txfp);
+			else
+				tdbp = new(g) TDBFMT(this, txfp);
+
+			return tdbp;
+#else   // !ZIP_SUPPORT
+			strcpy(g->Message, "ZIP not supported");
+			return NULL;
+#endif  // !ZIP_SUPPORT
+		} else if (map) {
       // Should be now compatible with UNIX
       txfp = new(g) MAPFAM(this);
     } else if (Compressed) {
@@ -1476,21 +1525,16 @@ void CSVCOL::WriteColumn(PGLOBAL g)
 /*  TDBCCL class constructor.                                          */
 /***********************************************************************/
 TDBCCL::TDBCCL(PCSVDEF tdp) : TDBCAT(tdp)
-  {
-  Fn  = tdp->GetFn();
-  Hdr = tdp->Header;
-  Mxr = tdp->Maxerr;
-  Qtd = tdp->Quoted;
-  Sep = tdp->Sep;
-  } // end of TDBCCL constructor
+{
+	Topt = tdp->GetTopt();
+} // end of TDBCCL constructor
 
 /***********************************************************************/
 /*  GetResult: Get the list the CSV file columns.                      */
 /***********************************************************************/
 PQRYRES TDBCCL::GetResult(PGLOBAL g)
   {
-  return CSVColumns(g, ((PTABDEF)To_Def)->GetPath(), 
-                    Fn, Sep, Qtd, Hdr, Mxr, false);
+  return CSVColumns(g, ((PTABDEF)To_Def)->GetPath(), Topt, false);
   } // end of GetResult
 
 /* ------------------------ End of TabFmt ---------------------------- */

storage/connect/tabfmt.h

 /*************** TabFmt H Declares Source Code File (.H) ***************/
-/*  Name: TABFMT.H    Version 2.4                                      */
+/*  Name: TABFMT.H    Version 2.5                                      */
 /*                                                                     */
-/*  (C) Copyright to the author Olivier BERTRAND          2001-2014    */
+/*  (C) Copyright to the author Olivier BERTRAND          2001-2016    */
 /*                                                                     */
 /*  This file contains the CSV and FMT classes declares.               */
 /***********************************************************************/
@@ -13,8 +13,7 @@ typedef class  TDBFMT    *PTDBFMT;
 /***********************************************************************/
 /*  Functions used externally.                                         */
 /***********************************************************************/
-PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
-                   char q, int hdr, int mxr, bool info);
+PQRYRES CSVColumns(PGLOBAL g, char *dp, PTOS topt, bool info);
 
 /***********************************************************************/
 /*  CSV table.                                                         */
@@ -22,7 +21,8 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, const char *fn, char sep,
 class DllExport CSVDEF : public DOSDEF { /* Logical table description  */
   friend class TDBCSV;
   friend class TDBCCL;
- public:
+	friend PQRYRES CSVColumns(PGLOBAL, char *, PTOS, bool);
+public:
   // Constructor
   CSVDEF(void);
 
@@ -50,9 +50,10 @@ class DllExport CSVDEF : public DOSDEF { /* Logical table description  */
 /*  This is the DOS/UNIX Access Method class declaration for files     */
 /*  that are CSV files with columns separated by the Sep character.    */
 /***********************************************************************/
-class TDBCSV : public TDBDOS {
+class DllExport TDBCSV : public TDBDOS {
   friend class CSVCOL;
- public:
+	friend PQRYRES CSVColumns(PGLOBAL, char *, PTOS, bool);
+public:
   // Constructor
   TDBCSV(PCSVDEF tdp, PTXF txfp);
   TDBCSV(PGLOBAL g, PTDBCSV tdbp);
@@ -101,7 +102,7 @@ class TDBCSV : public TDBDOS {
 /*  Class CSVCOL: CSV access method column descriptor.                 */
 /*  This A.M. is used for Comma Separated V(?) files.                  */
 /***********************************************************************/
-class CSVCOL : public DOSCOL {
+class DllExport CSVCOL : public DOSCOL {
   friend class TDBCSV;
   friend class TDBFMT;
  public:
@@ -129,7 +130,7 @@ class CSVCOL : public DOSCOL {
 /*  This is the DOS/UNIX Access Method class declaration for files     */
 /*  whose record format is described by a Format keyword.              */
 /***********************************************************************/
-class TDBFMT : public TDBCSV {
+class DllExport TDBFMT : public TDBCSV {
   friend class CSVCOL;
 //friend class FMTCOL;
  public:
@@ -173,7 +174,7 @@ class TDBFMT : public TDBCSV {
 /***********************************************************************/
 /*  This is the class declaration for the CSV catalog table.           */
 /***********************************************************************/
-class TDBCCL : public TDBCAT {
+class DllExport TDBCCL : public TDBCAT {
  public:
   // Constructor
   TDBCCL(PCSVDEF tdp);
@@ -183,11 +184,7 @@ class TDBCCL : public TDBCAT {
   virtual PQRYRES GetResult(PGLOBAL g);
 
   // Members
-  char   *Fn;                     // The CSV file (path) name
-  bool    Hdr;                    // true if first line contains headers
-  int     Mxr;                    // Maximum number of bad records
-  int     Qtd;                    // Quoting level for quoted fields
-  char    Sep;                    // Separator for standard CSV files
-  }; // end of class TDBCCL
+	PTOS  Topt;
+}; // end of class TDBCCL
 
 /* ------------------------- End of TabFmt.H ------------------------- */

storage/connect/tabjson.cpp

 /************* tabjson C++ Program Source Code File (.CPP) *************/
-/* PROGRAM NAME: tabjson     Version 1.2                               */
+/* PROGRAM NAME: tabjson     Version 1.3                               */
 /*  (C) Copyright to the author Olivier BERTRAND          2014 - 2016  */
 /*  This program are the JSON class DB execution routines.             */
 /***********************************************************************/
@@ -28,6 +28,9 @@
 #if defined(GZ_SUPPORT)
 #include "filamgz.h"
 #endif   // GZ_SUPPORT
+#if defined(ZIP_SUPPORT)
+#include "filamzip.h"
+#endif   // ZIP_SUPPORT
 #include "tabmul.h"
 #include "checklvl.h"
 #include "resource.h"
@@ -67,7 +70,7 @@ PQRYRES JSONColumns(PGLOBAL g, char *db, PTOS topt, bool info)
   static XFLD fldtyp[] = {FLD_NAME, FLD_TYPE, FLD_TYPENAME, FLD_PREC, 
                           FLD_LENGTH, FLD_SCALE, FLD_NULL, FLD_FORMAT};
   static unsigned int length[] = {0, 6, 8, 10, 10, 6, 6, 0};
-  char   *fn, colname[65], fmt[129];
+  char    colname[65], fmt[129];
   int     i, j, lvl, n = 0;
   int     ncol = sizeof(buftyp) / sizeof(int);
   PVAL    valp;
@@ -94,16 +97,21 @@ PQRYRES JSONColumns(PGLOBAL g, char *db, PTOS topt, bool info)
   /*********************************************************************/
   /*  Open the input file.                                             */
   /*********************************************************************/
-  if (!(fn = GetStringTableOption(g, topt, "Filename", NULL))) {
-    strcpy(g->Message, MSG(MISSING_FNAME));
-    return NULL;
-  } else {
-    lvl = GetIntegerTableOption(g, topt, "Level", 0);
-    lvl = (lvl < 0) ? 0 : (lvl > 16) ? 16 : lvl;
-  } // endif fn
+  lvl = GetIntegerTableOption(g, topt, "Level", 0);
+  lvl = (lvl < 0) ? 0 : (lvl > 16) ? 16 : lvl;
 
   tdp = new(g) JSONDEF;
-  tdp->Fn = fn;
+#if defined(ZIP_SUPPORT)
+	tdp->Zipfn = GetStringTableOption(g, topt, "Zipfile", NULL);
+	tdp->Multiple = GetIntegerTableOption(g, topt, "Multiple", 0);
+#endif   // ZIP_SUPPORT
+	tdp->Fn = GetStringTableOption(g, topt, "Filename", NULL);
+
+	if (!tdp->Fn && !tdp->Zipfn && !tdp->Multiple) {
+		strcpy(g->Message, MSG(MISSING_FNAME));
+		return NULL;
+	} // endif Fn
+
   tdp->Database = SetPath(g, db);
   tdp->Objname = GetStringTableOption(g, topt, "Object", NULL);
   tdp->Base = GetIntegerTableOption(g, topt, "Base", 0) ? 1 : 0;
@@ -114,7 +122,10 @@ PQRYRES JSONColumns(PGLOBAL g, char *db, PTOS topt, bool info)
           tdp->Fn, tdp->Objname, tdp->Pretty, lvl);
 
   if (tdp->Pretty == 2) {
-    tjsp = new(g) TDBJSON(tdp, new(g) MAPFAM(tdp));
+		if (tdp->Zipfn)
+      tjsp = new(g) TDBJSON(tdp, new(g) ZIPFAM(tdp));
+		else
+		  tjsp = new(g) TDBJSON(tdp, new(g) MAPFAM(tdp));
 
     if (tjsp->MakeDocument(g))
       return NULL;
@@ -127,10 +138,28 @@ PQRYRES JSONColumns(PGLOBAL g, char *db, PTOS topt, bool info)
       } // endif lrecl
 
     tdp->Ending = GetIntegerTableOption(g, topt, "Ending", CRLF);
-    tjnp = new(g) TDBJSN(tdp, new(g) DOSFAM(tdp));
+
+		if (tdp->Zipfn)
+			tjnp = new(g) TDBJSN(tdp, new(g) ZIPFAM(tdp));
+		else
+			tjnp = new(g) TDBJSN(tdp, new(g) DOSFAM(tdp));
+
     tjnp->SetMode(MODE_READ);
 
-    if (tjnp->OpenDB(g))
+#if USE_G
+		// Allocate the parse work memory
+		PGLOBAL G = (PGLOBAL)PlugSubAlloc(g, NULL, sizeof(GLOBAL));
+		memset(G, 0, sizeof(GLOBAL));
+		G->Sarea_Size = tdp->Lrecl * 10;
+		G->Sarea = PlugSubAlloc(g, NULL, G->Sarea_Size);
+		PlugSubSet(G, G->Sarea, G->Sarea_Size);
+		G->jump_level = -1;
+		tjnp->SetG(G);
+#else
+		tjnp->SetG(g);
+#endif
+
+		if (tjnp->OpenDB(g))
       return NULL;
 
     switch (tjnp->ReadDB(g)) {
@@ -395,7 +424,14 @@ PTDB JSONDEF::GetTable(PGLOBAL g, MODE m)
                 !(tmp == TMP_FORCE &&
                 (m == MODE_UPDATE || m == MODE_DELETE));
 
-    if (Compressed) {
+		if (Zipfn) {
+#if defined(ZIP_SUPPORT)
+			txfp = new(g) ZIPFAM(this);
+#else   // !ZIP_SUPPORT
+			sprintf(g->Message, MSG(NO_FEAT_SUPPORT), "ZIP");
+			return NULL;
+#endif  // !ZIP_SUPPORT
+		} else if (Compressed) {
 #if defined(GZ_SUPPORT)
       if (Compressed == 1)
         txfp = new(g) GZFAM(this);
@@ -426,12 +462,16 @@ PTDB JSONDEF::GetTable(PGLOBAL g, MODE m)
 		((TDBJSN*)tdbp)->G = g;
 #endif
 	} else {
-    txfp = new(g) MAPFAM(this);
+		if (Zipfn)
+			txfp = new(g) ZIPFAM(this);
+		else
+			txfp = new(g) MAPFAM(this);
+
     tdbp = new(g) TDBJSON(this, txfp);
 		((TDBJSON*)tdbp)->G = g;
   } // endif Pretty
 
-  if (Multiple)
+  if (Multiple && !Zipfn)
     tdbp = new(g) TDBMUL(tdbp);
 
   return tdbp;

storage/connect/tabjson.h

@@ -78,7 +78,8 @@ class TDBJSN : public TDBDOS {
   virtual AMT   GetAmType(void) {return TYPE_AM_JSN;}
   virtual bool  SkipHeader(PGLOBAL g);
   virtual PTDB  Duplicate(PGLOBAL g) {return (PTDB)new(g) TDBJSN(this);}
-          PJSON GetRow(void) {return Row;} 
+          PJSON GetRow(void) {return Row;}
+					void  SetG(PGLOBAL g) {G = g;}
 
   // Methods
   virtual PTDB  CopyOne(PTABS t);

storage/connect/tabzip.cpp

+/************* TabZip C++ Program Source Code File (.CPP) **************/
+/* PROGRAM NAME: TABZIP     Version 1.0                                */
+/*  (C) Copyright to the author Olivier BERTRAND          2016         */
+/*  This program are the TABZIP class DB execution routines.           */
+/***********************************************************************/
+
+/***********************************************************************/
+/*  Include relevant sections of the MariaDB header file.              */
+/***********************************************************************/
+#include <my_global.h>
+
+/***********************************************************************/
+/*  Include application header files:                                  */
+/*  global.h    is header containing all global declarations.          */
+/*  plgdbsem.h  is header containing the DB application declarations.  */
+/*  (x)table.h  is header containing the TDBASE declarations.          */
+/*  tabzip.h    is header containing the TABZIP classes declarations.  */
+/***********************************************************************/
+#include "global.h"
+#include "plgdbsem.h"
+#include "xtable.h"
+#include "filamtxt.h"
+#include "filamzip.h"
+#include "resource.h"                        // for IDS_COLUMNS
+#include "tabdos.h"
+#include "tabzip.h"
+
+/* -------------------------- Class ZIPDEF --------------------------- */
+
+/************************************************************************/
+/*  DefineAM: define specific AM block values.                          */
+/************************************************************************/
+bool ZIPDEF::DefineAM(PGLOBAL g, LPCSTR am, int poff)
+{
+//target = GetStringCatInfo(g, "Target", NULL);
+	return DOSDEF::DefineAM(g, "ZIP", poff);
+} // end of DefineAM
+
+/***********************************************************************/
+/*  GetTable: makes a new Table Description Block.                     */
+/***********************************************************************/
+PTDB ZIPDEF::GetTable(PGLOBAL g, MODE m)
+{
+	return new(g) TDBZIP(this);
+} // end of GetTable
+
+/* ------------------------------------------------------------------- */
+
+/***********************************************************************/
+/*  Implementation of the TDBZIP class.                                */
+/***********************************************************************/
+TDBZIP::TDBZIP(PZIPDEF tdp) : TDBASE(tdp)
+{
+	zipfile = NULL;
+	zfn = tdp->Fn;
+//target = tdp->target;
+	nexterr = UNZ_OK;
+} // end of TDBZIP standard constructor
+
+/***********************************************************************/
+/*  Allocate ZIP column description block.                             */
+/***********************************************************************/
+PCOL TDBZIP::MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n)
+{
+	return new(g) ZIPCOL(cdp, this, cprec, n);
+} // end of MakeCol
+
+/***********************************************************************/
+/*  open a zip file.																									 */
+/*  param: filename	path and the filename of the zip file to open.		 */
+/*  return:	true if open, false otherwise.														 */
+/***********************************************************************/
+bool TDBZIP::open(PGLOBAL g, const char *filename)
+{
+	if (!zipfile && !(zipfile = unzOpen64(filename)))
+		sprintf(g->Message, "Zipfile open error");
+
+	return (zipfile == NULL);
+}	// end of open
+
+/***********************************************************************/
+/*  Close the zip file.																								 */
+/***********************************************************************/
+void TDBZIP::close()
+{
+	if (zipfile) {
+		unzClose(zipfile);
+		zipfile = NULL;
+	}	// endif zipfile
+
+}	// end of close
+
+/***********************************************************************/
+/*  ZIP Cardinality: returns table size in number of rows.             */
+/***********************************************************************/
+int TDBZIP::Cardinality(PGLOBAL g)
+{
+	if (!g)
+		return 1;
+	else if (Cardinal < 0) {
+		if (!open(g, zfn)) {
+			unz_global_info64 ginfo;
+			int err = unzGetGlobalInfo64(zipfile, &ginfo);
+
+			Cardinal = (err == UNZ_OK) ? ginfo.number_entry : 0;
+		} else
+			Cardinal = 0;
+
+	} // endif Cardinal
+
+	return Cardinal;
+} // end of Cardinality
+
+/***********************************************************************/
+/*  ZIP GetMaxSize: returns file size estimate in number of lines.     */
+/***********************************************************************/
+int TDBZIP::GetMaxSize(PGLOBAL g)
+{
+	if (MaxSize < 0)
+		MaxSize = Cardinality(g);
+
+	return MaxSize;
+} // end of GetMaxSize
+
+/***********************************************************************/
+/*  ZIP Access Method opening routine.                                 */
+/***********************************************************************/
+bool TDBZIP::OpenDB(PGLOBAL g)
+{
+	if (Use == USE_OPEN)
+		// Table already open
+		return false;
+
+	Use = USE_OPEN;       // To be clean
+  return open(g, zfn);
+} // end of OpenDB
+
+/***********************************************************************/
+/*  ReadDB: Data Base read routine for ZIP access method.              */
+/***********************************************************************/
+int TDBZIP::ReadDB(PGLOBAL g)
+{
+	if (nexterr == UNZ_END_OF_LIST_OF_FILE)
+		return RC_EF;
+	else if (nexterr != UNZ_OK) {
+		sprintf(g->Message, "unzGoToNextFile error %d", nexterr);
+		return RC_FX;
+	}	// endif nexterr
+
+	int err = unzGetCurrentFileInfo64(zipfile, &finfo, fn,
+		sizeof(fn), NULL, 0, NULL, 0);
+
+	if (err != UNZ_OK) {
+		sprintf(g->Message, "unzGetCurrentFileInfo64 error %d", err);
+		return RC_FX;
+	}	// endif err
+
+	nexterr = unzGoToNextFile(zipfile);
+	return RC_OK;
+} // end of ReadDB
+
+/***********************************************************************/
+/*  WriteDB: Data Base write routine for ZIP access method.            */
+/***********************************************************************/
+int TDBZIP::WriteDB(PGLOBAL g)
+{
+	strcpy(g->Message, "ZIP tables are read only");
+	return RC_FX;
+} // end of WriteDB
+
+/***********************************************************************/
+/*  Data Base delete line routine for ZIP access method.               */
+/***********************************************************************/
+int TDBZIP::DeleteDB(PGLOBAL g, int irc)
+{
+	strcpy(g->Message, "Delete not enabled for ZIP tables");
+	return RC_FX;
+} // end of DeleteDB
+
+/***********************************************************************/
+/*  Data Base close routine for ZIP access method.                     */
+/***********************************************************************/
+void TDBZIP::CloseDB(PGLOBAL g)
+{
+	close();
+	Use = USE_READY;                // Just to be clean
+} // end of CloseDB
+
+/* ---------------------------- ZIPCOL ------------------------------- */
+
+/***********************************************************************/
+/*  ZIPCOL public constructor.                                         */
+/***********************************************************************/
+ZIPCOL::ZIPCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PSZ am)
+	: COLBLK(cdp, tdbp, i)
+{
+	if (cprec) {
+		Next = cprec->GetNext();
+		cprec->SetNext(this);
+	} else {
+		Next = tdbp->GetColumns();
+		tdbp->SetColumns(this);
+	} // endif cprec
+
+	Tdbz = (TDBZIP*)tdbp;
+	flag = cdp->GetOffset();
+} // end of ZIPCOL constructor
+
+/***********************************************************************/
+/*  ReadColumn:                                                        */
+/***********************************************************************/
+void ZIPCOL::ReadColumn(PGLOBAL g)
+{
+	switch (flag) {
+	case 1:
+		Value->SetValue(Tdbz->finfo.compressed_size);
+		break;
+	case 2:
+		Value->SetValue(Tdbz->finfo.uncompressed_size);
+		break;
+	case 3:
+		Value->SetValue((int)Tdbz->finfo.compression_method);
+		break;
+	default:
+		Value->SetValue_psz((PSZ)Tdbz->fn);
+	}	// endswitch flag
+
+} // end of ReadColumn
+
+/* -------------------------- End of tabzip -------------------------- */

storage/connect/tabzip.h

+/*************** tabzip H Declares Source Code File (.H) ***************/
+/*  Name: tabzip.h   Version 1.0                                       */
+/*                                                                     */
+/*  (C) Copyright to the author Olivier BERTRAND          2016         */
+/*                                                                     */
+/*  This file contains the ZIP classe declares.                        */
+/***********************************************************************/
+#include "osutil.h"
+#include "block.h"
+#include "colblk.h"
+#include "xtable.h"
+#include "unzip.h"
+
+typedef class ZIPDEF *PZIPDEF;
+typedef class TDBZIP *PTDBZIP;
+typedef class ZIPCOL *PZIPCOL;
+
+/***********************************************************************/
+/*  ZIP table: display info about a ZIP file.                          */
+/***********************************************************************/
+class DllExport ZIPDEF : public DOSDEF {          /* Table description */
+	friend class TDBZIP;
+	friend class ZIPFAM;
+public:
+	// Constructor
+	ZIPDEF(void) {}
+
+	// Implementation
+	virtual const char *GetType(void) {return "ZIP";}
+
+	// Methods
+	virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff);
+	virtual PTDB GetTable(PGLOBAL g, MODE m);
+
+protected:
+	// Members
+	PSZ         target;								 // The inside file to query
+}; // end of ZIPDEF
+
+/***********************************************************************/
+/*  This is the ZIP Access Method class declaration.                   */
+/***********************************************************************/
+class DllExport TDBZIP : public TDBASE {
+	friend class ZIPCOL;
+public:
+	// Constructor
+	TDBZIP(PZIPDEF tdp);
+
+	// Implementation
+	virtual AMT  GetAmType(void) {return TYPE_AM_ZIP;}
+
+	// Methods
+	virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n);
+	virtual int  Cardinality(PGLOBAL g);
+	virtual int  GetMaxSize(PGLOBAL g);
+	virtual int  GetRecpos(void) {return 0;}
+
+	// Database routines
+	virtual bool OpenDB(PGLOBAL g);
+	virtual int  ReadDB(PGLOBAL g);
+	virtual int  WriteDB(PGLOBAL g);
+	virtual int  DeleteDB(PGLOBAL g, int irc);
+	virtual void CloseDB(PGLOBAL g);
+
+protected:
+	bool open(PGLOBAL g, const char *filename);
+	void close(void);
+
+	// Members
+	unzFile         zipfile;							   // The ZIP container file
+	PSZ             zfn;									   // The ZIP file name
+//PSZ             target;
+	unz_file_info64 finfo;									 // The current file info
+	char            fn[FILENAME_MAX];     	 // The current file name
+	int             nexterr;								 // Next file error
+}; // end of class TDBZIP
+
+/***********************************************************************/
+/*  Class ZIPCOL: ZIP access method column descriptor.                 */
+/***********************************************************************/
+class DllExport ZIPCOL : public COLBLK {
+	friend class TDBZIP;
+public:
+	// Constructors
+	ZIPCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PSZ am = "ZIP");
+
+	// Implementation
+	virtual int  GetAmType(void) { return TYPE_AM_ZIP; }
+
+	// Methods
+	virtual void ReadColumn(PGLOBAL g);
+
+protected:
+	// Default constructor not to be used
+	ZIPCOL(void) {}
+
+	// Members
+	TDBZIP *Tdbz;
+	int     flag;
+}; // end of class ZIPCOL