Move export/import functions to a javascript library

This commit is contained in:
Ethan O'Brien 2025-01-17 08:32:25 -06:00
parent 44d3925408
commit 89859a40f9
5 changed files with 90 additions and 72 deletions

82
emscripten/deps.js Normal file
View file

@ -0,0 +1,82 @@
var EmscriptenDeps = {
ExportPersistantData: () =>
{
if (!window.JSZip)
{
alert("JSZip library not found. Aborting");
return;
}
const zipFolder = (folder) =>
{
let zip = new JSZip();
const processFolder = (name) => {
let contents;
try {
contents = Module.FS.readdir(name);
} catch(e) {
return;
}
contents.forEach((entry) => {
if ([".", ".."].includes(entry)) return;
try {
Module.FS.readFile(name + entry);
processFile(name + entry);
} catch(e) {
processFolder(name + entry + "/");
}
})
}
const processFile = (name) => {
zip.file(name, Module.FS.readFile(name));
}
processFolder(folder);
return zip;
}
const zip = zipFolder("/persistant/");
zip.generateAsync({type: "blob"}).then(blob => {
const a = document.createElement("a");
a.href = URL.createObjectURL(blob);
a.download = "OpenRCT2-emscripten.zip";
a.click();
setTimeout(() => URL.revokeObjectURL(a.href), 1000);
})
},
ImportPersistantData: () =>
{
if (!window.JSZip)
{
alert("JSZip library not found. Aborting");
return;
}
if (!confirm("Are you sure? This will wipe all current data.")) return;
alert("Select a zip file");
const input = document.createElement("input");
input.type = "file";
input.addEventListener("change", async (e) => {
let zip = new JSZip();
try {
zip = await zip.loadAsync(e.target.files[0]);
} catch(e) {
alert("Not a zip file!");
return;
}
await clearDatabase("/persistant/");
for (const k in zip.files) {
const entry = zip.files[k];
if (entry.dir) {
try {
Module.FS.mkdir("/"+k);
} catch(e) {}
} else {
Module.FS.writeFile("/"+k, await entry.async("uint8array"));
}
}
console.log("Database restored");
})
input.click();
}
};
mergeInto(LibraryManager.library, EmscriptenDeps);

View file

@ -39,49 +39,6 @@
{
console.log("loading", fileName);
return fileName;
},
funcs: {
export: () =>
{
const zip = zipFolder("/persistant/");
zip.generateAsync({type: "blob"}).then(blob => {
const a = document.createElement("a");
a.href = URL.createObjectURL(blob);
a.download = "OpenRCT2-emscripten.zip";
a.click();
setTimeout(() => URL.revokeObjectURL(a.href), 1000);
})
},
import: () =>
{
if (!confirm("Are you sure? This will wipe all current data.")) return;
alert("Select a zip file");
const input = document.createElement("input");
input.type = "file";
input.addEventListener("change", async (e) => {
let zip = new JSZip();
try {
zip = await zip.loadAsync(e.target.files[0]);
} catch(e) {
alert("Not a zip file!");
return;
}
await clearDatabase("/persistant/");
for (const k in zip.files) {
const entry = zip.files[k];
if (entry.dir) {
try {
Module.FS.mkdir("/"+k);
} catch(e) {}
} else {
Module.FS.writeFile("/"+k, await entry.async("uint8array"));
}
}
console.log("Database restored");
})
input.click();
}
}
});
@ -247,31 +204,6 @@ async function clearDatabase(dir) {
processFolder(dir);
await new Promise(res => Module.FS.syncfs(false, res));
}
function zipFolder(folder) {
let zip = new JSZip();
const processFolder = (name) => {
let contents;
try {
contents = Module.FS.readdir(name);
} catch(e) {
return;
}
contents.forEach((entry) => {
if ([".", ".."].includes(entry)) return;
try {
Module.FS.readFile(name + entry);
processFile(name + entry);
} catch(e) {
processFolder(name + entry + "/");
}
})
}
const processFile = (name) => {
zip.file(name, Module.FS.readFile(name));
}
processFolder(folder);
return zip;
}
function fileExists(path) {
try {
Module.FS.readFile(path);

View file

@ -18,7 +18,7 @@ if (CMAKE_SYSTEM_NAME MATCHES "Emscripten")
endif ()
set(SHARED_FLAGS "-fexceptions")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${USE_FLAGS} ${SHARED_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${EMSCRIPTEN_LDFLAGS} --bind ${SHARED_FLAGS} -s EXPORTED_FUNCTIONS=_GetVersion,_main")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${EMSCRIPTEN_LDFLAGS} --bind ${SHARED_FLAGS} -s EXPORTED_FUNCTIONS=_GetVersion,_main --js-library ${ROOT_DIR}/emscripten/deps.js")
find_package(SpeexDSP REQUIRED)
elseif (MSVC)
find_package(SDL2 REQUIRED)

View file

@ -48,6 +48,10 @@
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
extern "C" {
extern void ExportPersistantData();
extern void ImportPersistantData();
}
#endif
using namespace OpenRCT2;
@ -1987,10 +1991,10 @@ namespace OpenRCT2::Ui::Windows
break;
#ifdef __EMSCRIPTEN__
case WIDX_EXPORT_EMSCRIPTEN_DATA:
MAIN_THREAD_EM_ASM({ Module.funcs.export(); });
ExportPersistantData();
break;
case WIDX_IMPORT_EMSCRIPTEN_DATA:
MAIN_THREAD_EM_ASM({ Module.funcs.import(); });
ImportPersistantData();
break;
#endif
}

View file

@ -122,7 +122,7 @@ if (CMAKE_SYSTEM_NAME MATCHES "Emscripten")
endif ()
set(SHARED_FLAGS "-fexceptions")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${USE_FLAGS} ${SHARED_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${EMSCRIPTEN_LDFLAGS} --bind ${SHARED_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${EMSCRIPTEN_LDFLAGS} --bind ${SHARED_FLAGS} --js-library ${ROOT_DIR}/emscripten/deps.js")
find_package(SpeexDSP REQUIRED)
elseif (MSVC)
find_package(png 1.6 REQUIRED)