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WIP implementing loading IndexedDB in classicube.js instead

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This commit is contained in:
UnknownShadow200 2021-09-01 08:42:09 +10:00
parent 53077d36d9
commit f242e15baf
2 changed files with 80 additions and 63 deletions
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2
src/Platform_Web.c
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@ -97,6 +97,7 @@ cc_uint64 Stopwatch_Measure(void) {
*-----------------------------------------------------Directory/File------------------------------------------------------*
*#########################################################################################################################*/
extern void interop_InitFilesystem(void);
extern void interop_LoadIndexedDB(void);
extern int interop_DirectoryCreate(const char* path, int perms);
cc_result Directory_Create(const cc_string* path) {
char str[NATIVE_STR_LEN];
@ -431,6 +432,7 @@ extern void interop_InitModule(void);
void Platform_Init(void) {
interop_InitModule();
interop_InitFilesystem();
interop_LoadIndexedDB();
interop_InitSockets();
/* NOTE: You must pre-load IndexedDB before main() */

141
src/interop_web.js
View File

@ -126,69 +126,6 @@ mergeInto(LibraryManager.library, {
HEAP32[(time|0 + 16)>>2] = date.getMinutes();
HEAP32[(time|0 + 20)>>2] = date.getSeconds();
},
//########################################################################################################################
//--------------------------------------------------------Filesystem------------------------------------------------------
//########################################################################################################################
interop_SaveNode: function(path) {
var callback = function(err) {
if (!err) return;
console.log(err);
ccall('Platform_LogError', 'void', ['string'], ['&cError saving ' + path]);
ccall('Platform_LogError', 'void', ['string'], [' &c' + err]);
};
var stat, node, entry;
try {
var lookup = FS.lookupPath(path);
path = lookup.path;
node = lookup.node;
stat = node.node_ops.getattr(node);
if (FS.isDir(stat.mode)) {
entry = { timestamp: stat.mtime, mode: stat.mode };
} else {
// Performance consideration: storing a normal JavaScript array to a IndexedDB is much slower than storing a typed array.
// Therefore always convert the file contents to a typed array first before writing the data to IndexedDB.
node.contents = MEMFS.getFileDataAsTypedArray(node);
entry = { timestamp: stat.mtime, mode: stat.mode, contents: node.contents };
}
} catch (err) {
return callback(err);
}
IDBFS.getDB('/classicube', function(err, db) {
if (err) return callback(err);
var transaction, store;
// can still throw errors here
try {
transaction = db.transaction([IDBFS.DB_STORE_NAME], 'readwrite');
store = transaction.objectStore(IDBFS.DB_STORE_NAME);
} catch (err) {
return callback(err);
}
transaction.onerror = function(e) {
callback(this.error);
e.preventDefault();
};
var req = store.put(entry, path);
req.onsuccess = function() { callback(null); };
req.onerror = function(e) {
callback(this.error);
e.preventDefault();
};
});
},
interop_InitFilesystem: function(buffer) {
if (!window.cc_idbErr) return;
var msg = 'Error preloading IndexedDB:' + window.cc_idbErr + '\n\nPreviously saved settings/maps will be lost';
ccall('Platform_LogError', 'void', ['string'], [msg]);
},
interop_InitFilesystem__deps: ['interop_SaveNode'],
interop_DirectorySetWorking: function (raw) {
var path = UTF8ToString(raw);
try {
@ -296,6 +233,84 @@ mergeInto(LibraryManager.library, {
},
interop_FileClose__deps: ['interop_SaveNode'],
//########################################################################################################################
//--------------------------------------------------------Filesystem------------------------------------------------------
//########################################################################################################################
interop_InitFilesystem: function(buffer) {
if (!window.cc_idbErr) return;
var msg = 'Error preloading IndexedDB:' + window.cc_idbErr + '\n\nPreviously saved settings/maps will be lost';
ccall('Platform_LogError', 'void', ['string'], [msg]);
},
interop_LoadIndexedDB: function() {
try {
FS.lookupPath('/classicube');
return;
// FS.lookupPath throws exception if path doesn't exist
} catch { }
addRunDependency('load-idb');
FS.mkdir('/classicube');
FS.mount(IDBFS, {}, '/classicube');
FS.syncfs(true, function(err) {
if (err) window.cc_idbErr = err;
removeRunDependency('load-idb');
});
},
interop_InitFilesystem__deps: ['interop_SaveNode'],
interop_SaveNode: function(path) {
var callback = function(err) {
if (!err) return;
console.log(err);
ccall('Platform_LogError', 'void', ['string'], ['&cError saving ' + path]);
ccall('Platform_LogError', 'void', ['string'], [' &c' + err]);
};
var stat, node, entry;
try {
var lookup = FS.lookupPath(path);
path = lookup.path;
node = lookup.node;
stat = node.node_ops.getattr(node);
if (FS.isDir(stat.mode)) {
entry = { timestamp: stat.mtime, mode: stat.mode };
} else {
// Performance consideration: storing a normal JavaScript array to a IndexedDB is much slower than storing a typed array.
// Therefore always convert the file contents to a typed array first before writing the data to IndexedDB.
node.contents = MEMFS.getFileDataAsTypedArray(node);
entry = { timestamp: stat.mtime, mode: stat.mode, contents: node.contents };
}
} catch (err) {
return callback(err);
}
IDBFS.getDB('/classicube', function(err, db) {
if (err) return callback(err);
var transaction, store;
// can still throw errors here
try {
transaction = db.transaction([IDBFS.DB_STORE_NAME], 'readwrite');
store = transaction.objectStore(IDBFS.DB_STORE_NAME);
} catch (err) {
return callback(err);
}
transaction.onerror = function(e) {
callback(this.error);
e.preventDefault();
};
var req = store.put(entry, path);
req.onsuccess = function() { callback(null); };
req.onerror = function(e) {
callback(this.error);
e.preventDefault();
};
});
},
//########################################################################################################################
//---------------------------------------------------------Sockets--------------------------------------------------------