Add optional zSchema argument to sqlite3_js_db_export().

FossilOrigin-Name: 9c23644b1e5bf44bfb431a35fd1674c11ccb99e9eb0989f10175b0cb2a858eaa

ext/wasm/api/sqlite3-api-prologue.js

@@ -1310,14 +1310,17 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
      Serializes the given `sqlite3*` pointer to a Uint8Array, as per
      sqlite3_serialize(). On success it returns a Uint8Array. On
      error it throws with a description of the problem.
+
+     schema is the schema to serialize. It may be a WASM C-string
+     pointer or a JS string. If it is falsy, it defaults to "main".
   */
-  capi.sqlite3_js_db_export = function(pDb){
+  capi.sqlite3_js_db_export = function(pDb, schema=0){
     if(!pDb) toss3('Invalid sqlite3* argument.');
     if(!wasm.bigIntEnabled) toss3('BigInt64 support is not enabled.');
-    const stack = wasm.pstack.pointer;
+    const scope = wasm.scopedAllocPush();
     let pOut;
     try{
-      const pSize = wasm.pstack.alloc(8/*i64*/ + wasm.ptrSizeof);
+      const pSize = wasm.scopedAlloc(8/*i64*/ + wasm.ptrSizeof);
       const ppOut = pSize + 8;
       /**
          Maintenance reminder, since this cost a full hour of grief
@@ -1326,8 +1329,11 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
          export reads a garbage size because it's not on an 8-byte
          memory boundary!
       */
+      const zSchema = schema
+            ? (wasm.isPtr(schema) ? schema : wasm.scopedAllocCString(''+schema))
+            : 0;
       let rc = wasm.exports.sqlite3_wasm_db_serialize(
-        pDb, ppOut, pSize, 0
+        pDb, zSchema, ppOut, pSize, 0
       );
       if(rc){
         toss3("Database serialization failed with code",
@@ -1341,7 +1347,7 @@ self.sqlite3ApiBootstrap = function sqlite3ApiBootstrap(
       return rc;
     }finally{
       if(pOut) wasm.exports.sqlite3_free(pOut);
-      wasm.pstack.restore(stack);
+      wasm.scopedAllocPop(scope);
     }
   };
 

ext/wasm/api/sqlite3-wasm.c

@@ -916,25 +916,27 @@ int sqlite3_wasm_db_export_chunked( sqlite3* pDb,
 }
 
 /*
-** A proxy for sqlite3_serialize() which serializes the "main" schema
+** A proxy for sqlite3_serialize() which serializes the schema zSchema
 ** of pDb, placing the serialized output in pOut and nOut. nOut may be
-** NULL. If pDb or pOut are NULL then SQLITE_MISUSE is returned. If
-** allocation of the serialized copy fails, SQLITE_NOMEM is returned.
-** On success, 0 is returned and `*pOut` will contain a pointer to the
-** memory unless mFlags includes SQLITE_SERIALIZE_NOCOPY and the
-** database has no contiguous memory representation, in which case
-** `*pOut` will be NULL but 0 will be returned.
+** NULL. If zSchema is NULL then "main" is assumed. If pDb or pOut are
+** NULL then SQLITE_MISUSE is returned. If allocation of the
+** serialized copy fails, SQLITE_NOMEM is returned.  On success, 0 is
+** returned and `*pOut` will contain a pointer to the memory unless
+** mFlags includes SQLITE_SERIALIZE_NOCOPY and the database has no
+** contiguous memory representation, in which case `*pOut` will be
+** NULL but 0 will be returned.
 **
 ** If `*pOut` is not NULL, the caller is responsible for passing it to
 ** sqlite3_free() to free it.
 */
 SQLITE_WASM_KEEP
-int sqlite3_wasm_db_serialize( sqlite3 *pDb, unsigned char **pOut,
+int sqlite3_wasm_db_serialize( sqlite3 *pDb, const char *zSchema,
+                               unsigned char **pOut,
                                sqlite3_int64 *nOut, unsigned int mFlags ){
   unsigned char * z;
   if( !pDb || !pOut ) return SQLITE_MISUSE;
   if(nOut) *nOut = 0;
-  z = sqlite3_serialize(pDb, "main", nOut, mFlags);
+  z = sqlite3_serialize(pDb, zSchema ? zSchema : "main", nOut, mFlags);
   if( z || (SQLITE_SERIALIZE_NOCOPY & mFlags) ){
     *pOut = z;
     return 0;

manifest

@@ -1,5 +1,5 @@
-C Update\sMakefile.in\sto\sinclude\snew\starget\s"sqlite3r.c".\sFor\sgenerating\s"sqlite3r.c"\sand\s"sqlite3r.h",\sversions\sof\sthe\samalgamation\sthat\sinclude\sthe\srecover\sextension.\sTo\sbuild\sthe\sshell\stool\sagainst\sthese\sfiles,\sadd\s-DSQLITE_HAVE_SQLITE3R.
-D 2022-11-23T16:08:49.765
+C Add\soptional\szSchema\sargument\sto\ssqlite3_js_db_export().
+D 2022-11-23T21:03:22.603
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -503,12 +503,12 @@ F ext/wasm/api/sqlite3-api-cleanup.js ecdc69dbfccfe26146f04799fcfd4a6f5790d46e7e
 F ext/wasm/api/sqlite3-api-glue.js 056f44b82c126358a0175e08a892d56fadfce177b0d7a0012502a6acf67ea6d5
 F ext/wasm/api/sqlite3-api-oo1.js e9a83489bbb4838ce0aee46eaaa9350e0e25a5b926b565e4f5ae8e840e4fbaed
 F ext/wasm/api/sqlite3-api-opfs.js 38d368e33f470f9ba196f1a2b0c9ce076c930c70df233c345a246f1ad4c26d3b
-F ext/wasm/api/sqlite3-api-prologue.js 08e96d26d329e8c1e08813fe0b84ee93e0e78b087efdd6eb2809ae2672902437
+F ext/wasm/api/sqlite3-api-prologue.js fa28d080a28bb936348156f7a298e0a001be088fb439905ff2dd85146f4fd2a0
 F ext/wasm/api/sqlite3-api-worker1.js e94ba98e44afccfa482874cd9acb325883ade50ed1f9f9526beb9de1711f182f
 F ext/wasm/api/sqlite3-license-version-header.js a661182fc93fc2cf212dfd0b987f8e138a3ac98f850b1112e29b5fbdaecc87c3
 F ext/wasm/api/sqlite3-opfs-async-proxy.js 1ec10873f1d59d305f6f3b435c50a1b75d693d5fb739b226f3da46fcbb11261a
 F ext/wasm/api/sqlite3-wasi.h 25356084cfe0d40458a902afb465df8c21fc4152c1d0a59b563a3fba59a068f9
-F ext/wasm/api/sqlite3-wasm.c 8fc8f47680df0e9a6c0f2f03cb004148645ecc983aa216daba09cb21f7e092a2
+F ext/wasm/api/sqlite3-wasm.c 8b32787a3b6bb2990cbaba2304bd5b75a9652acbc8d29909b3279019b6cbaef5
 F ext/wasm/api/sqlite3-worker1-promiser.js 0c7a9826dbf82a5ed4e4f7bf7816e825a52aff253afbf3350431f5773faf0e4b
 F ext/wasm/api/sqlite3-worker1.js 1e54ea3d540161bcfb2100368a2fc0cad871a207b8336afee1c445715851ec54
 F ext/wasm/batch-runner.html 4deeed44fe41496dc6898d9fb17938ea3291f40f4bfb977e29d0cef96fbbe4c8
@@ -2059,9 +2059,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 220cc4c6399b772b4ece03305a41b437ef0654d586a8a1c3dc5e7606fd36d655 59a837cfc7f9f96509491c8fc45355d2e8892af25246955e22adec1cbf37327b
-R 6b5395a59674684ae7409c1a67752bd1
-T +closed 59a837cfc7f9f96509491c8fc45355d2e8892af25246955e22adec1cbf37327b
-U dan
-Z 08a51ae8157c87edcee2b45d299f4155
+P 5f135575b923cb59947667071c6af9ff14063c933cedf37d6c2a0a1b86c85032
+R f8ada562338905eb066689b281095c3e
+U stephan
+Z 3d9c890d275324696db830c3a91a1a42
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-5f135575b923cb59947667071c6af9ff14063c933cedf37d6c2a0a1b86c85032
+9c23644b1e5bf44bfb431a35fd1674c11ccb99e9eb0989f10175b0cb2a858eaa