From 5f8cdac620fbf61fbdebd173f18b06b7f6f1906f Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Mon, 14 Oct 2013 21:14:42 +0000
Subject: Move the tointeger() and toreal() functions out of core and make them
 into a run-time loadable extension.

FossilOrigin-Name: 9f66dd7e3790c04f0ab724419f5381bd21f9ebad
---
 src/func.c | 141 -------------------------------------------------------------
 1 file changed, 141 deletions(-)

(limited to 'src/func.c')

diff --git a/src/func.c b/src/func.c
index 73b6c3bb2..e2ab68f03 100644
--- a/src/func.c
+++ b/src/func.c
@@ -965,145 +965,6 @@ static void quoteFunc(sqlite3_context *context, int argc, sqlite3_value **argv){
   }
 }
 
-/*
-** tointeger(X):  If X is any value (integer, double, blob, or string) that
-** can be losslessly converted into an integer, then make the conversion and
-** return the result.  Otherwise, return NULL.
-*/
-static void tointegerFunc(
-  sqlite3_context *context,
-  int argc,
-  sqlite3_value **argv
-){
-  assert( argc==1 );
-  UNUSED_PARAMETER(argc);
-  switch( sqlite3_value_type(argv[0]) ){
-    case SQLITE_FLOAT: {
-      double rVal = sqlite3_value_double(argv[0]);
-      i64 iVal = (i64)rVal;
-      if( rVal==(double)iVal ){
-        sqlite3_result_int64(context, iVal);
-      }
-      break;
-    }
-    case SQLITE_INTEGER: {
-      sqlite3_result_int64(context, sqlite3_value_int64(argv[0]));
-      break;
-    }
-    case SQLITE_BLOB: {
-      const unsigned char *zBlob = sqlite3_value_blob(argv[0]);
-      if( zBlob ){
-        int nBlob = sqlite3_value_bytes(argv[0]);
-        if( nBlob==sizeof(i64) ){
-          i64 iVal;
-          if( SQLITE_BIGENDIAN ){
-            int i;
-            unsigned char *zBlobRev = contextMalloc(context, nBlob);
-            if( !zBlobRev ) break;
-            for(i=0; i<nBlob; i++) zBlobRev[i] = zBlob[nBlob-1-i];
-            memcpy(&iVal, zBlobRev, sizeof(i64));
-            sqlite3_free(zBlobRev);
-          }else{
-            memcpy(&iVal, zBlob, sizeof(i64));
-          }
-          sqlite3_result_int64(context, iVal);
-        }
-      }
-      break;
-    }
-    case SQLITE_TEXT: {
-      const unsigned char *zStr = sqlite3_value_text(argv[0]);
-      if( zStr ){
-        int nStr = sqlite3_value_bytes(argv[0]);
-        if( nStr && !sqlite3Isspace(zStr[0]) ){
-          i64 iVal;
-          if( !sqlite3Atoi64((const char*)zStr, &iVal, nStr, SQLITE_UTF8) ){
-            sqlite3_result_int64(context, iVal);
-          }
-        }
-      }
-      break;
-    }
-    default: {
-      assert( sqlite3_value_type(argv[0])==SQLITE_NULL );
-      break;
-    }
-  }
-}
-
-/*
-** toreal(X): If X is any value (integer, double, blob, or string) that can
-** be losslessly converted into a real number, then do so and return that
-** real number.  Otherwise return NULL.
-*/
-#if defined(_MSC_VER)
-#pragma optimize("", off)
-#endif
-static void torealFunc(
-  sqlite3_context *context,
-  int argc,
-  sqlite3_value **argv
-){
-  assert( argc==1 );
-  UNUSED_PARAMETER(argc);
-  switch( sqlite3_value_type(argv[0]) ){
-    case SQLITE_FLOAT: {
-      sqlite3_result_double(context, sqlite3_value_double(argv[0]));
-      break;
-    }
-    case SQLITE_INTEGER: {
-      i64 iVal = sqlite3_value_int64(argv[0]);
-      double rVal = (double)iVal;
-      if( iVal==(i64)rVal ){
-        sqlite3_result_double(context, rVal);
-      }
-      break;
-    }
-    case SQLITE_BLOB: {
-      const unsigned char *zBlob = sqlite3_value_blob(argv[0]);
-      if( zBlob ){
-        int nBlob = sqlite3_value_bytes(argv[0]);
-        if( nBlob==sizeof(double) ){
-          double rVal;
-          if( SQLITE_LITTLEENDIAN ){
-            int i;
-            unsigned char *zBlobRev = contextMalloc(context, nBlob);
-            if( !zBlobRev ) break;
-            for(i=0; i<nBlob; i++) zBlobRev[i] = zBlob[nBlob-1-i];
-            memcpy(&rVal, zBlobRev, sizeof(double));
-            sqlite3_free(zBlobRev);
-          }else{
-            memcpy(&rVal, zBlob, sizeof(double));
-          }
-          sqlite3_result_double(context, rVal);
-        }
-      }
-      break;
-    }
-    case SQLITE_TEXT: {
-      const unsigned char *zStr = sqlite3_value_text(argv[0]);
-      if( zStr ){
-        int nStr = sqlite3_value_bytes(argv[0]);
-        if( nStr && !sqlite3Isspace(zStr[0]) && !sqlite3Isspace(zStr[nStr-1]) ){
-          double rVal;
-          if( sqlite3AtoF((const char*)zStr, &rVal, nStr, SQLITE_UTF8) ){
-            sqlite3_result_double(context, rVal);
-            return;
-          }
-        }
-      }
-      break;
-    }
-    default: {
-      assert( sqlite3_value_type(argv[0])==SQLITE_NULL );
-      break;
-    }
-  }
-}
-#if defined(_MSC_VER)
-#pragma optimize("", on)
-#endif
-
 /*
 ** The unicode() function.  Return the integer unicode code-point value
 ** for the first character of the input string. 
@@ -1814,8 +1675,6 @@ void sqlite3RegisterGlobalFunctions(void){
     FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc  ),
 #endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
     FUNCTION(quote,              1, 0, 0, quoteFunc        ),
-    FUNCTION(tointeger,          1, 0, 0, tointegerFunc    ),
-    FUNCTION(toreal,             1, 0, 0, torealFunc       ),
     FUNCTION(last_insert_rowid,  0, 0, 0, last_insert_rowid),
     FUNCTION(changes,            0, 0, 0, changes          ),
     FUNCTION(total_changes,      0, 0, 0, total_changes    ),
-- 
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