Minor code changes for consistency and to simplify testing.

FossilOrigin-Name: df272bd837910ad9e03e222716a1201a601399664365f1dcf73d5932372518ed

manifest

@@ -1,5 +1,5 @@
-C Implement\sstrict\sJSONB\schecking\sin\sthe\sjson_valid()\sfunction.
-D 2023-12-02T21:39:34.516
+C Minor\scode\schanges\sfor\sconsistency\sand\sto\ssimplify\stesting.
+D 2023-12-03T00:51:30.732
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -688,7 +688,7 @@ F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
 F src/hwtime.h f9c2dfb84dce7acf95ce6d289e46f5f9d3d1afd328e53da8f8e9008e3b3caae6
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
 F src/insert.c 3f0a94082d978bbdd33c38fefea15346c6c6bffb70bc645a71dc0f1f87dd3276
-F src/json.c fd321d1ab2d6f42354bd2ff7bc4974ab8dd9eee977e4e8e137cf1360873ef052
+F src/json.c 9a79d32ad7df0f37aaca77a78278af177b7c898f719f7f3c1beb6626cf0cd88e
 F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
 F src/loadext.c 7432c944ff197046d67a1207790a1b13eec4548c85a9457eb0896bb3641dfb36
 F src/main.c 1b89f3de98d1b59fec5bac1d66d6ece21f703821b8eaa0d53d9604c35309f6f9
@@ -2145,8 +2145,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 419652c0c82980bd043584dcd2976f91dfff7b926b216d597698299850b855c0
-R ed8c7ad5ad50d0c7dab9c9a4109db3da
+P 0f26d38880fcbc207abcc94dbc170a7428bab1b4f0b7731aaf5bee0224000994
+R 66de56e0a2d95958c6880cf67a24bb7b
 U drh
-Z 50662e1c3dbad4c9b4aaea32a805ad55
+Z 5f7e6173dda49cfc3454a89f079d029d
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-0f26d38880fcbc207abcc94dbc170a7428bab1b4f0b7731aaf5bee0224000994
+df272bd837910ad9e03e222716a1201a601399664365f1dcf73d5932372518ed

src/json.c

@@ -534,7 +534,7 @@ static void jsonAppendRaw(JsonString *p, const char *zIn, u32 N){
   }
 }
 static void jsonAppendRawNZ(JsonString *p, const char *zIn, u32 N){
-  if( N==0 ) return;
+  assert( N>0 );
   if( N+p->nUsed >= p->nAlloc ){
     jsonStringExpandAndAppend(p,zIn,N);
   }else{
@@ -572,9 +572,8 @@ static void jsonAppendChar(JsonString *p, char c){
 /* Make sure there is a zero terminator on p->zBuf[]
 */
 static void jsonStringTerminate(JsonString *p){
-  if( p->nUsed<p->nAlloc || jsonStringGrow(p,1) ){
-    p->zBuf[p->nUsed] = 0;
-  }   
+  jsonAppendChar(p, 0);
+  p->nUsed--;
 }
 
 /* Try to force the string to be a zero-terminated RCStr string.  In other
@@ -991,24 +990,6 @@ static const struct NanInfName {
 };
 
 
-/*
-** Compute the text of an error in JSON path syntax.
-**
-** If ctx is not NULL then push the error message into ctx and return NULL.
-*  If ctx is NULL, then return the text of the error message.
-*/
-static char *jsonPathSyntaxError(const char *zErr, sqlite3_context *ctx){
-  char *zMsg = sqlite3_mprintf("JSON path error near '%q'", zErr);
-  if( ctx==0 ) return zMsg;
-  if( zMsg==0 ){
-    sqlite3_result_error_nomem(ctx);
-  }else{
-    sqlite3_result_error(ctx, zMsg, -1);
-    sqlite3_free(zMsg);
-  }
-  return 0;
-}
-
 /*
 ** Report the wrong number of arguments for json_insert(), json_replace()
 ** or json_set().
@@ -2659,15 +2640,19 @@ static int jsonFunctionArgToBlob(
 
 /*
 ** Generate a bad path error.
+**
+** If ctx is not NULL then push the error message into ctx and return NULL.
+** If ctx is NULL, then return the text of the error message.
 */
-static void jsonBadPathError(
+static char *jsonBadPathError(
   sqlite3_context *ctx,     /* The function call containing the error */
   const char *zPath         /* The path with the problem */
 ){
-  sqlite3 *db = sqlite3_context_db_handle(ctx);
-  char *zMsg = sqlite3MPrintf(db, "bad JSON path: %Q", zPath);
+  char *zMsg = sqlite3_mprintf("bad JSON path: %Q", zPath);
+  if( ctx==0 ) return zMsg;
   sqlite3_result_error(ctx, zMsg, -1);
-  sqlite3DbFree(db, zMsg);
+  sqlite3_free(zMsg);
+  return 0;
 }
 
 /* argv[0] is a BLOB that seems likely to be a JSONB.  Subsequent
@@ -3287,7 +3272,6 @@ static void jsonExtractFunc(
       }else if( zPath[0]!='[' ){
         jsonAppendRawNZ(&jx, ".", 1);
         jsonAppendRaw(&jx, zPath, nPath);
-        jsonAppendChar(&jx, 0);
       }else{
         jsonAppendRaw(&jx, zPath, nPath);
       }
@@ -3685,7 +3669,7 @@ static void jsonRemoveFunc(
 
 json_remove_patherror:
   jsonParseFree(p);
-  jsonPathSyntaxError(zPath, ctx);
+  jsonBadPathError(ctx, zPath);
   return;
 
 json_remove_return_null:
@@ -4689,7 +4673,7 @@ static int jsonEachFilter(
     if( zRoot==0 ) return SQLITE_OK;
     if( zRoot[0]!='$' ){
       sqlite3_free(cur->pVtab->zErrMsg);
-      cur->pVtab->zErrMsg = jsonPathSyntaxError(zRoot, 0);
+      cur->pVtab->zErrMsg = jsonBadPathError(0, zRoot);
       jsonEachCursorReset(p);
       return cur->pVtab->zErrMsg ? SQLITE_ERROR : SQLITE_NOMEM;
     }
@@ -4707,7 +4691,7 @@ static int jsonEachFilter(
           return SQLITE_OK;
         }
         sqlite3_free(cur->pVtab->zErrMsg);
-        cur->pVtab->zErrMsg = jsonPathSyntaxError(zRoot, 0);
+        cur->pVtab->zErrMsg = jsonBadPathError(0, zRoot);
         jsonEachCursorReset(p);
         return cur->pVtab->zErrMsg ? SQLITE_ERROR : SQLITE_NOMEM;
       }