Change the multiplexor to use a 3-digit suffix.

FossilOrigin-Name: 0b7edc44757660c8a5ae3b91cbcc3e6afd419b28

1 files changed, 11 insertions, 23 deletions

diff --git a/src/test_multiplex.c b/src/test_multiplex.c
index 5d29607ac..2ca8bf8d5 100644
--- a/src/test_multiplex.c
+++ b/src/test_multiplex.c
@@ -96,26 +96,16 @@
 # define SQLITE_MULTIPLEX_CHUNK_SIZE 2147418112
 #endif
 
-/* Default limit on number of chunks.  Care should be taken
-** so that values for chunks numbers fit in the SQLITE_MULTIPLEX_EXT_FMT
-** format specifier. It may be changed by calling
-** the xFileControl() interface.
+/* This used to be the default limit on number of chunks, but
+** it is no longer enforced.  There is currently no limit to the
+** number of chunks.
+**
+** May be changed by calling the xFileControl() interface.
 */
 #ifndef SQLITE_MULTIPLEX_MAX_CHUNKS
-# define SQLITE_MULTIPLEX_MAX_CHUNKS 32
+# define SQLITE_MULTIPLEX_MAX_CHUNKS 12
 #endif
 
-/* If SQLITE_MULTIPLEX_EXT_OVWR is defined, the 
-** last SQLITE_MULTIPLEX_EXT_SZ characters of the 
-** filename will be overwritten, otherwise, the 
-** multiplex extension is simply appended to the filename.
-** Ex.  (undefined) test.db -> test.db01
-**      (defined)   test.db -> test.01
-** Chunk 0 does not have a modified extension.
-*/
-#define SQLITE_MULTIPLEX_EXT_FMT    "%02d"
-#define SQLITE_MULTIPLEX_EXT_SZ     2
-
 /************************ Object Definitions ******************************/
 
 /* Forward declaration of all object types */
@@ -304,20 +294,18 @@ static int multiplexSubFilename(multiplexGroup *pGroup, int iChunk){
   if( pGroup->aReal[iChunk].z==0 ){
     char *z;
     int n = pGroup->nName;
-    pGroup->aReal[iChunk].z = z = sqlite3_malloc( n+3 );
+    pGroup->aReal[iChunk].z = z = sqlite3_malloc( n+4 );
     if( z==0 ){
       return SQLITE_NOMEM;
     }
     memcpy(z, pGroup->zName, n+1);
     if( iChunk>0 ){
 #ifdef SQLITE_ENABLE_8_3_NAMES
-      if( n>3 && z[n-3]=='.' ){
-        n--;
-      }else if( n>4 && z[n-4]=='.' ){
-        n -= 2;
-      }
+      int i;
+      for(i=n-1; i>0 && i>=n-4 && z[i]!='.'; i--){}
+      if( i>=n-4 ) n = i+1;
 #endif
-      sqlite3_snprintf(3,&z[n],"%02d",iChunk);
+      sqlite3_snprintf(4,&z[n],"%03d",iChunk);
     }
   }
   return SQLITE_OK;