When constructing the JSON Path for the "fullpath" column of the

json_tree() and json_each() table-valued functions, be sure to quote
object labels where necessary.

FossilOrigin-Name: 0fbbe7881cadf0b3c211653c7a0797e0a90c7c24da78ecc8a27140c05f89f2ed

manifest

@@ -1,5 +1,5 @@
-C Fix\sthe\sJSON\sPath\sparser\sso\sthat\sit\swill\saccept\szero-length\sobject\slabels.\n[forum/forumpost/c082aeab43|Forum\sthread\sc082aeab43].
-D 2022-04-04T14:24:14.310
+C When\sconstructing\sthe\sJSON\sPath\sfor\sthe\s"fullpath"\scolumn\sof\sthe\njson_tree()\sand\sjson_each()\stable-valued\sfunctions,\sbe\ssure\sto\squote\nobject\slabels\swhere\snecessary.
+D 2022-04-04T15:15:45.616
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -513,7 +513,7 @@ F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
 F src/hwtime.h cb1d7e3e1ed94b7aa6fde95ae2c2daccc3df826be26fc9ed7fd90d1750ae6144
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
 F src/insert.c c4fc48e6f38cc415262652407949771ce4e6f8f0c7330f872e44a0677f3ad602
-F src/json.c 37d4b68b52440653e9a8ffab13e9d5c282f01d4d6c1ba763aaa36c72671d9988
+F src/json.c 7749b98c62f691697c7ee536b570c744c0583cab4a89200fdd0fc2aa8cc8cbd6
 F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
 F src/loadext.c 2ecb1441f9b1c22e9e022ee0776e67d259facf34b56ba892b206f0a294ee6f8c
 F src/main.c 89dfd569b4fbcab65281b3c6d636b887b2cb23cbaa16f8c6b67062862144c927
@@ -1945,8 +1945,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P e0305e640b9078c7eed9ab0bcc14f4515b54e7cd9ade3306bc2d1660f05b2725
-R b7b1f674d3bb83fa7d01b3c971c6fb98
+P 84fe95d2a5b4d232d657e3b8110027a698a9bcd597f205cc535cfa97bc299f21
+R 970c08a76dac53f29009856eb6ab9f31
 U drh
-Z 9f0444d3701a4ee2277aeb80cbb65f96
+Z feea099ba66960be6a93d634e84b651a
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-84fe95d2a5b4d232d657e3b8110027a698a9bcd597f205cc535cfa97bc299f21
+0fbbe7881cadf0b3c211653c7a0797e0a90c7c24da78ecc8a27140c05f89f2ed

src/json.c

@@ -2275,6 +2275,33 @@ static int jsonEachNext(sqlite3_vtab_cursor *cur){
   return SQLITE_OK;
 }
 
+/* Append an object label to the JSON Path being constructed
+** in pStr.
+*/
+static void jsonAppendObjectPathElement(
+  JsonString *pStr,
+  JsonNode *pNode
+){
+  int jj, nn;
+  const char *z;
+  assert( pNode->eType==JSON_STRING );
+  assert( pNode->jnFlags & JNODE_LABEL );
+  assert( pNode->eU==1 );
+  z = pNode->u.zJContent;
+  nn = pNode->n;
+  assert( nn>=2 );
+  assert( z[0]=='"' );
+  assert( z[nn-1]=='"' );
+  if( nn>2 && sqlite3Isalpha(z[1]) ){
+    for(jj=2; jj<nn-1 && sqlite3Isalnum(z[jj]); jj++){}
+    if( jj==nn-1 ){
+      z++;
+      nn -= 2;
+    }
+  }
+  jsonPrintf(nn+2, pStr, ".%.*s", nn, z);
+}
+
 /* Append the name of the path for element i to pStr
 */
 static void jsonEachComputePath(
@@ -2299,10 +2326,7 @@ static void jsonEachComputePath(
   }else{
     assert( pUp->eType==JSON_OBJECT );
     if( (pNode->jnFlags & JNODE_LABEL)==0 ) pNode--;
-    assert( pNode->eType==JSON_STRING );
-    assert( pNode->jnFlags & JNODE_LABEL );
-    assert( pNode->eU==1 );
-    jsonPrintf(pNode->n+1, pStr, ".%.*s", pNode->n-2, pNode->u.zJContent+1);
+    jsonAppendObjectPathElement(pStr, pNode);
   }
 }
 
@@ -2373,8 +2397,7 @@ static int jsonEachColumn(
         if( p->eType==JSON_ARRAY ){
           jsonPrintf(30, &x, "[%d]", p->iRowid);
         }else if( p->eType==JSON_OBJECT ){
-          assert( pThis->eU==1 );
-          jsonPrintf(pThis->n, &x, ".%.*s", pThis->n-2, pThis->u.zJContent+1);
+          jsonAppendObjectPathElement(&x, pThis);
         }
       }
       jsonResult(&x);