Add the json_object() function.

FossilOrigin-Name: 414a95f3b79359f167858b2325fd2be223569c66

ext/misc/json.c

@@ -194,7 +194,70 @@ static void jsonArrayFunc(
     }
   }
   jsonAppendRaw(&jx, "]", 1);
-  jsonResult(&jx);      
+  jsonResult(&jx);
+}
+
+/*
+** Implementation of the json_object(NAME,VALUE,...) function.  Return a JSON
+** object that contains all name/value given in arguments.  Or if any name
+** is not a string or if any value is a BLOB, throw an error.
+*/
+static void jsonObjectFunc(
+  sqlite3_context *context,
+  int argc,
+  sqlite3_value **argv
+){
+  int i;
+  Json jx;
+  char cSep = '{';
+  const char *z;
+  u32 n;
+
+  if( argc&1 ){
+    sqlite3_result_error(context, "json_object() requires an even number "
+                                  "of arguments", -1);
+    return;
+  }
+  jsonInit(&jx, context);
+  for(i=0; i<argc; i+=2){
+    jsonAppendRaw(&jx, &cSep, 1);
+    cSep = ',';
+    if( sqlite3_value_type(argv[i])!=SQLITE_TEXT ){
+      sqlite3_result_error(context, "json_object() labels must be TEXT", -1);
+      jsonZero(&jx);
+      return;
+    }
+    z = (const char*)sqlite3_value_text(argv[i]);
+    n = (u32)sqlite3_value_bytes(argv[i]);
+    jsonAppendString(&jx, z, n);
+    jsonAppendRaw(&jx, ":", 1);
+    switch( sqlite3_value_type(argv[i+1]) ){
+      case SQLITE_NULL: {
+        jsonAppendRaw(&jx, "null", 4);
+        break;
+      }
+      case SQLITE_INTEGER:
+      case SQLITE_FLOAT: {
+        z = (const char*)sqlite3_value_text(argv[i+1]);
+        n = (u32)sqlite3_value_bytes(argv[i+1]);
+        jsonAppendRaw(&jx, z, n);
+        break;
+      }
+      case SQLITE_TEXT: {
+        z = (const char*)sqlite3_value_text(argv[i+1]);
+        n = (u32)sqlite3_value_bytes(argv[i+1]);
+        jsonAppendString(&jx, z, n);
+        break;
+      }
+      default: {
+        jsonZero(&jx);
+        sqlite3_result_error(context, "JSON cannot hold BLOB values", -1);
+        return;
+      }
+    }
+  }
+  jsonAppendRaw(&jx, "}", 1);
+  jsonResult(&jx);
 }
 
 #ifdef _WIN32
@@ -212,7 +275,8 @@ int sqlite3_json_init(
      int nArg;
      void (*xFunc)(sqlite3_context*,int,sqlite3_value**);
   } aFunc[] = {
-    { "json_array",  -1,  jsonArrayFunc },
+    { "json_array",     -1,    jsonArrayFunc     },
+    { "json_object",    -1,    jsonObjectFunc    },
   };
   SQLITE_EXTENSION_INIT2(pApi);
   (void)pzErrMsg;  /* Unused parameter */

manifest

@@ -1,5 +1,5 @@
-C Begin\sadding\san\sextension\sthat\sprovides\sJSON\sSQL\sfunctions.
-D 2015-08-12T16:49:40.032
+C Add\sthe\sjson_object()\sfunction.
+D 2015-08-12T17:23:34.617
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 7669f34c487f5b328de6b508f374ee1e56558bb0
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -192,7 +192,7 @@ F ext/misc/eval.c f971962e92ebb8b0a4e6b62949463ee454d88fa2
 F ext/misc/fileio.c d4171c815d6543a9edef8308aab2951413cd8d0f
 F ext/misc/fuzzer.c 4c84635c71c26cfa7c2e5848cf49fe2d2cfcd767
 F ext/misc/ieee754.c b0362167289170627659e84173f5d2e8fee8566e
-F ext/misc/json.c 172375d024d799aa6506b8a329128ee0b67e1a94
+F ext/misc/json.c 9df3054186b0b84dc7b3ce7e8694ebad4fdc5f7c
 F ext/misc/nextchar.c 35c8b8baacb96d92abbb34a83a997b797075b342
 F ext/misc/percentile.c bcbee3c061b884eccb80e21651daaae8e1e43c63
 F ext/misc/regexp.c af92cdaa5058fcec1451e49becc7ba44dba023dc
@@ -808,7 +808,7 @@ F test/journal3.test ff8af941f9e06161d3db1b46bb9f965ff0e7f307
 F test/jrnlmode.test 7864d59cf7f6e552b9b99ba0f38acd167edc10fa
 F test/jrnlmode2.test 81610545a4e6ed239ea8fa661891893385e23a1d
 F test/jrnlmode3.test 556b447a05be0e0963f4311e95ab1632b11c9eaa
-F test/json1.test f09587c250426291faff60cacc5aae759216dbd7
+F test/json1.test 950ed4e8deb8ad4c10bd4fbc858eb54143de9867
 F test/keyword1.test 37ef6bba5d2ed5b07ecdd6810571de2956599dff
 F test/lastinsert.test 42e948fd6442f07d60acbd15d33fb86473e0ef63
 F test/laststmtchanges.test ae613f53819206b3222771828d024154d51db200
@@ -1374,10 +1374,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 48bd54594752d5be3337f12c72f28d2080cb630b
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P f7682435278419829a46bb4cc9b5625d46549e22
-R 400e916c0bc56219e72f7a73e2b83997
-T *branch * json
-T *sym-json *
-T -sym-trunk *
+P dde8afdd8dba1d92560326dca7c1cdfedbe5e070
+R 75cab18873f077d21ed527f3798bc75c
 U drh
-Z 44e10dc14fd52cdaf44120cd6aeb4786
+Z 14906f22419c39d5dff2c5387892aa6a

manifest.uuid

@@ -1 +1 @@
-dde8afdd8dba1d92560326dca7c1cdfedbe5e070
+414a95f3b79359f167858b2325fd2be223569c66

test/json1.test

@@ -37,4 +37,18 @@ do_execsql_test json1-1.4 {
                     99);
 } {[-9223372036854775808,9223372036854775807,0,1,-1,0.0,1.0,-1.0,-1.0e+99,2.0e+100,"one","two","three",4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,null,21,22,23,24,25,26,27,28,29,30,31,"abcdefghijklmnopqrstuvwyxzABCDEFGHIJKLMNOPQRSTUVWXYZ","abcdefghijklmnopqrstuvwyxzABCDEFGHIJKLMNOPQRSTUVWXYZ","abcdefghijklmnopqrstuvwyxzABCDEFGHIJKLMNOPQRSTUVWXYZ",99]}
 
+do_execsql_test json1-2.1 {
+  SELECT json_object('a',1,'b',2.5,'c',null,'d','String Test');
+} {{{"a":1,"b":2.5,"c":null,"d":"String Test"}}}
+do_catchsql_test json1-2.2 {
+  SELECT json_object('a',1,2,2.5);
+} {1 {json_object() labels must be TEXT}}
+do_catchsql_test json1-2.3 {
+  SELECT json_object('a',1,'b');
+} {1 {json_object() requires an even number of arguments}}
+do_catchsql_test json1-2.4 {
+  SELECT json_object('a',1,'b',x'abcd');
+} {1 {JSON cannot hold BLOB values}}
+
+
 finish_test