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

Fix bug using multiple zip files
  modified:   storage/connect/filamzip.cpp
  modified:   storage/connect/filamzip.h
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/tabjson.cpp

- Add error msg when trying to make discovery on multiple tables
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabxml.cpp

storage/connect/filamzip.cpp

@@ -48,7 +48,7 @@
 ZIPFAM::ZIPFAM(PDOSDEF tdp) : MAPFAM(tdp)
 {
 	zipfile = NULL;
-	zfn = tdp->Fn;
+//zfn = tdp->Fn;
 	target = tdp->Entry;
 //*fn = 0;
 	entryopen = false;
@@ -65,7 +65,7 @@ ZIPFAM::ZIPFAM(PDOSDEF tdp) : MAPFAM(tdp)
 ZIPFAM::ZIPFAM(PZIPFAM txfp) : MAPFAM(txfp)
 {
 	zipfile = txfp->zipfile;
-	zfn = txfp->zfn;
+//zfn = txfp->zfn;
 	target = txfp->target;
 //strcpy(fn, txfp->fn);
 	finfo = txfp->finfo;
@@ -129,7 +129,7 @@ int ZIPFAM::GetFileLength(PGLOBAL g)
 bool ZIPFAM::open(PGLOBAL g, const char *filename)
 {
 	if (!zipfile && !(zipfile = unzOpen64(filename)))
-		sprintf(g->Message, "Zipfile open error");
+		sprintf(g->Message, "Zipfile open error on %s", filename);
 
 	return (zipfile == NULL);
 }	// end of open
@@ -205,7 +205,7 @@ bool ZIPFAM::OpenTableFile(PGLOBAL g)
 	/*********************************************************************/
 	if (mode == MODE_READ) {
 		//  We used the file name relative to recorded datapath
-		PlugSetPath(filename, zfn, Tdbp->GetPath());
+		PlugSetPath(filename, To_File, Tdbp->GetPath());
 
 		bool b = open(g, filename);
 
@@ -258,7 +258,8 @@ bool ZIPFAM::OpenTableFile(PGLOBAL g)
 			} // endif fp
 
 			To_Fb = fp;                               // Useful when closing
-		}	// endif b
+		} else
+			return true;
 
 	} else {
 		strcpy(g->Message, "Only READ mode supported for ZIP files");

storage/connect/filamzip.h

@@ -51,7 +51,7 @@ protected:
 
 	// Members
 	unzFile         zipfile;							   // The ZIP container file
-	PSZ             zfn;									   // The ZIP file name
+//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

storage/connect/tabfmt.cpp

@@ -108,6 +108,11 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, PTOS topt, bool info)
     goto skipit;
     } // endif info
 
+	if (GetIntegerTableOption(g, topt, "Multiple", 0)) {
+		strcpy(g->Message, "Cannot find column definition for multiple table");
+		return NULL;
+	}	// endif Multiple
+
 //      num_max = atoi(p+1);             // Max num of record to test
   imax = hmax = nerr = 0;
 
@@ -124,18 +129,15 @@ PQRYRES CSVColumns(PGLOBAL g, char *dp, PTOS topt, bool info)
 	tdp = new(g) CSVDEF;
 #if defined(ZIP_SUPPORT)
 	tdp->Entry = GetStringTableOption(g, topt, "Entry", NULL);
-	tdp->Multiple = GetIntegerTableOption(g, topt, "Multiple", 0);
 	tdp->Zipped = GetBooleanTableOption(g, topt, "Zipped", false);
 #endif   // ZIP_SUPPORT
-	tdp->Fn = GetStringTableOption(g, topt, "Filename", NULL);
+	fn = tdp->Fn = GetStringTableOption(g, topt, "Filename", NULL);
 
 	if (!tdp->Fn) {
 		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;
 
@@ -497,12 +499,6 @@ PTDB CSVDEF::GetTable(PGLOBAL g, MODE mode)
 		if (Zipped) {
 #if defined(ZIP_SUPPORT)
 			txfp = new(g) ZIPFAM(this);
-
-			if (!Fmtd)
-				tdbp = new(g) TDBCSV(this, txfp);
-			else
-				tdbp = new(g) TDBFMT(this, txfp);
-
 #else   // !ZIP_SUPPORT
 			strcpy(g->Message, "ZIP not supported");
 			return NULL;

storage/connect/tabjson.cpp

@@ -94,7 +94,12 @@ PQRYRES JSONColumns(PGLOBAL g, char *db, PTOS topt, bool info)
     goto skipit;
     } // endif info
 
-  /*********************************************************************/
+	if (GetIntegerTableOption(g, topt, "Multiple", 0)) {
+		strcpy(g->Message, "Cannot find column definition for multiple table");
+		return NULL;
+	}	// endif Multiple
+
+	/*********************************************************************/
   /*  Open the input file.                                             */
   /*********************************************************************/
   lvl = GetIntegerTableOption(g, topt, "Level", 0);
@@ -103,7 +108,6 @@ PQRYRES JSONColumns(PGLOBAL g, char *db, PTOS topt, bool info)
   tdp = new(g) JSONDEF;
 #if defined(ZIP_SUPPORT)
 	tdp->Entry = GetStringTableOption(g, topt, "Entry", NULL);
-	tdp->Multiple = GetIntegerTableOption(g, topt, "Multiple", 0);
 	tdp->Zipped = GetBooleanTableOption(g, topt, "Zipped", false);
 #endif   // ZIP_SUPPORT
 	tdp->Fn = GetStringTableOption(g, topt, "Filename", NULL);

storage/connect/tabxml.cpp

@@ -136,7 +136,12 @@ PQRYRES XMLColumns(PGLOBAL g, char *db, char *tab, PTOS topt, bool info)
     goto skipit;
     } // endif info
 
-  /*********************************************************************/
+	if (GetIntegerTableOption(g, topt, "Multiple", 0)) {
+		strcpy(g->Message, "Cannot find column definition for multiple table");
+		return NULL;
+	}	// endif Multiple
+
+	/*********************************************************************/
   /*  Open the input file.                                             */
   /*********************************************************************/
   if (!(fn = GetStringTableOption(g, topt, "Filename", NULL))) {