bf078814cc
New `JavaScript.download_buffer` method to create a prompt that let the user download a file.
345 lines
13 KiB
C++
345 lines
13 KiB
C++
/*************************************************************************/
|
|
/* javascript_singleton.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#ifdef JAVASCRIPT_EVAL_ENABLED
|
|
|
|
#include "api/javascript_singleton.h"
|
|
#include "emscripten.h"
|
|
|
|
extern "C" {
|
|
typedef union {
|
|
int64_t i;
|
|
double r;
|
|
void *p;
|
|
} godot_js_wrapper_ex;
|
|
|
|
typedef int (*GodotJSWrapperVariant2JSCallback)(const void **p_args, int p_pos, godot_js_wrapper_ex *r_val, void **p_lock);
|
|
typedef void (*GodotJSWrapperFreeLockCallback)(void **p_lock, int p_type);
|
|
extern int godot_js_wrapper_interface_get(const char *p_name);
|
|
extern int godot_js_wrapper_object_call(int p_id, const char *p_method, void **p_args, int p_argc, GodotJSWrapperVariant2JSCallback p_variant2js_callback, godot_js_wrapper_ex *p_cb_rval, void **p_lock, GodotJSWrapperFreeLockCallback p_lock_callback);
|
|
extern int godot_js_wrapper_object_get(int p_id, godot_js_wrapper_ex *p_val, const char *p_prop);
|
|
extern int godot_js_wrapper_object_getvar(int p_id, int p_type, godot_js_wrapper_ex *p_val);
|
|
extern int godot_js_wrapper_object_setvar(int p_id, int p_key_type, godot_js_wrapper_ex *p_key_ex, int p_val_type, godot_js_wrapper_ex *p_val_ex);
|
|
extern void godot_js_wrapper_object_set(int p_id, const char *p_name, int p_type, godot_js_wrapper_ex *p_val);
|
|
extern void godot_js_wrapper_object_unref(int p_id);
|
|
extern int godot_js_wrapper_create_cb(void *p_ref, void (*p_callback)(void *p_ref, int p_arg_id, int p_argc));
|
|
extern int godot_js_wrapper_create_object(const char *p_method, void **p_args, int p_argc, GodotJSWrapperVariant2JSCallback p_variant2js_callback, godot_js_wrapper_ex *p_cb_rval, void **p_lock, GodotJSWrapperFreeLockCallback p_lock_callback);
|
|
};
|
|
|
|
class JavaScriptObjectImpl : public JavaScriptObject {
|
|
private:
|
|
friend class JavaScript;
|
|
|
|
int _js_id = 0;
|
|
Object *_ref = nullptr;
|
|
StringName _method;
|
|
|
|
static int _variant2js(const void **p_args, int p_pos, godot_js_wrapper_ex *r_val, void **p_lock);
|
|
static void _free_lock(void **p_lock, int p_type);
|
|
static Variant _js2variant(int p_type, godot_js_wrapper_ex *p_val);
|
|
static void *_alloc_variants(int p_size);
|
|
static void _callback(void *p_ref, int p_arg_id, int p_argc);
|
|
|
|
protected:
|
|
bool _set(const StringName &p_name, const Variant &p_value) override;
|
|
bool _get(const StringName &p_name, Variant &r_ret) const override;
|
|
void _get_property_list(List<PropertyInfo> *p_list) const override;
|
|
|
|
public:
|
|
Variant getvar(const Variant &p_key, bool *r_valid = nullptr) const override;
|
|
void setvar(const Variant &p_key, const Variant &p_value, bool *r_valid = nullptr) override;
|
|
Variant call(const StringName &p_method, const Variant **p_args, int p_argc, Variant::CallError &r_error) override;
|
|
JavaScriptObjectImpl() {}
|
|
JavaScriptObjectImpl(int p_id) { _js_id = p_id; }
|
|
~JavaScriptObjectImpl() {
|
|
if (_js_id) {
|
|
godot_js_wrapper_object_unref(_js_id);
|
|
}
|
|
}
|
|
};
|
|
|
|
bool JavaScriptObjectImpl::_set(const StringName &p_name, const Variant &p_value) {
|
|
ERR_FAIL_COND_V_MSG(!_js_id, false, "Invalid JS instance");
|
|
const String name = p_name;
|
|
godot_js_wrapper_ex exchange;
|
|
void *lock = nullptr;
|
|
const Variant *v = &p_value;
|
|
int type = _variant2js((const void **)&v, 0, &exchange, &lock);
|
|
godot_js_wrapper_object_set(_js_id, name.utf8().get_data(), type, &exchange);
|
|
if (lock) {
|
|
_free_lock(&lock, type);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool JavaScriptObjectImpl::_get(const StringName &p_name, Variant &r_ret) const {
|
|
ERR_FAIL_COND_V_MSG(!_js_id, false, "Invalid JS instance");
|
|
const String name = p_name;
|
|
godot_js_wrapper_ex exchange;
|
|
int type = godot_js_wrapper_object_get(_js_id, &exchange, name.utf8().get_data());
|
|
r_ret = _js2variant(type, &exchange);
|
|
return true;
|
|
}
|
|
|
|
Variant JavaScriptObjectImpl::getvar(const Variant &p_key, bool *r_valid) const {
|
|
if (r_valid) {
|
|
*r_valid = false;
|
|
}
|
|
godot_js_wrapper_ex exchange;
|
|
void *lock = nullptr;
|
|
const Variant *v = &p_key;
|
|
int prop_type = _variant2js((const void **)&v, 0, &exchange, &lock);
|
|
int type = godot_js_wrapper_object_getvar(_js_id, prop_type, &exchange);
|
|
if (lock) {
|
|
_free_lock(&lock, prop_type);
|
|
}
|
|
if (type < 0) {
|
|
return Variant();
|
|
}
|
|
if (r_valid) {
|
|
*r_valid = true;
|
|
}
|
|
return _js2variant(type, &exchange);
|
|
}
|
|
|
|
void JavaScriptObjectImpl::setvar(const Variant &p_key, const Variant &p_value, bool *r_valid) {
|
|
if (r_valid) {
|
|
*r_valid = false;
|
|
}
|
|
godot_js_wrapper_ex kex, vex;
|
|
void *klock = nullptr;
|
|
void *vlock = nullptr;
|
|
const Variant *kv = &p_key;
|
|
const Variant *vv = &p_value;
|
|
int ktype = _variant2js((const void **)&kv, 0, &kex, &klock);
|
|
int vtype = _variant2js((const void **)&vv, 0, &vex, &vlock);
|
|
int ret = godot_js_wrapper_object_setvar(_js_id, ktype, &kex, vtype, &vex);
|
|
if (klock) {
|
|
_free_lock(&klock, ktype);
|
|
}
|
|
if (vlock) {
|
|
_free_lock(&vlock, vtype);
|
|
}
|
|
if (ret == 0 && r_valid) {
|
|
*r_valid = true;
|
|
}
|
|
}
|
|
|
|
void JavaScriptObjectImpl::_get_property_list(List<PropertyInfo> *p_list) const {
|
|
}
|
|
|
|
void JavaScriptObjectImpl::_free_lock(void **p_lock, int p_type) {
|
|
ERR_FAIL_COND_MSG(*p_lock == nullptr, "No lock to free!");
|
|
const Variant::Type type = (Variant::Type)p_type;
|
|
switch (type) {
|
|
case Variant::STRING: {
|
|
CharString *cs = (CharString *)(*p_lock);
|
|
memdelete(cs);
|
|
*p_lock = nullptr;
|
|
} break;
|
|
default:
|
|
ERR_FAIL_MSG("Unknown lock type to free. Likely a bug.");
|
|
}
|
|
}
|
|
|
|
Variant JavaScriptObjectImpl::_js2variant(int p_type, godot_js_wrapper_ex *p_val) {
|
|
Variant::Type type = (Variant::Type)p_type;
|
|
switch (type) {
|
|
case Variant::BOOL:
|
|
return Variant((bool)p_val->i);
|
|
case Variant::INT:
|
|
return p_val->i;
|
|
case Variant::REAL:
|
|
return p_val->r;
|
|
case Variant::STRING: {
|
|
String out((const char *)p_val->p);
|
|
free(p_val->p);
|
|
return out;
|
|
}
|
|
case Variant::OBJECT: {
|
|
return memnew(JavaScriptObjectImpl(p_val->i));
|
|
}
|
|
default:
|
|
return Variant();
|
|
}
|
|
}
|
|
|
|
int JavaScriptObjectImpl::_variant2js(const void **p_args, int p_pos, godot_js_wrapper_ex *r_val, void **p_lock) {
|
|
const Variant **args = (const Variant **)p_args;
|
|
const Variant *v = args[p_pos];
|
|
Variant::Type type = v->get_type();
|
|
switch (type) {
|
|
case Variant::BOOL:
|
|
r_val->i = v->operator bool() ? 1 : 0;
|
|
break;
|
|
case Variant::INT: {
|
|
const int64_t tmp = v->operator int64_t();
|
|
if (tmp >= 1 << 31) {
|
|
r_val->r = (double)tmp;
|
|
return Variant::REAL;
|
|
}
|
|
r_val->i = v->operator int64_t();
|
|
} break;
|
|
case Variant::REAL:
|
|
r_val->r = v->operator real_t();
|
|
break;
|
|
case Variant::STRING: {
|
|
CharString *cs = memnew(CharString(v->operator String().utf8()));
|
|
r_val->p = (void *)cs->get_data();
|
|
*p_lock = (void *)cs;
|
|
} break;
|
|
case Variant::OBJECT: {
|
|
JavaScriptObject *js_obj = Object::cast_to<JavaScriptObject>(v->operator Object *());
|
|
r_val->i = js_obj != nullptr ? ((JavaScriptObjectImpl *)js_obj)->_js_id : 0;
|
|
} break;
|
|
default:
|
|
break;
|
|
}
|
|
return type;
|
|
}
|
|
|
|
Variant JavaScriptObjectImpl::call(const StringName &p_method, const Variant **p_args, int p_argc, Variant::CallError &r_error) {
|
|
godot_js_wrapper_ex exchange;
|
|
const String method = p_method;
|
|
void *lock = nullptr;
|
|
const int type = godot_js_wrapper_object_call(_js_id, method.utf8().get_data(), (void **)p_args, p_argc, &_variant2js, &exchange, &lock, &_free_lock);
|
|
r_error.error = Variant::CallError::CALL_OK;
|
|
if (type < 0) {
|
|
r_error.error = Variant::CallError::CALL_ERROR_INSTANCE_IS_NULL;
|
|
return Variant();
|
|
}
|
|
return _js2variant(type, &exchange);
|
|
}
|
|
|
|
void JavaScriptObjectImpl::_callback(void *p_ref, int p_args_id, int p_argc) {
|
|
const JavaScriptObjectImpl *obj = (JavaScriptObjectImpl *)p_ref;
|
|
ERR_FAIL_COND_MSG(obj->_ref == nullptr, "JavaScript callback failed.");
|
|
Vector<const Variant *> argp;
|
|
Array arg_arr;
|
|
for (int i = 0; i < p_argc; i++) {
|
|
godot_js_wrapper_ex exchange;
|
|
exchange.i = i;
|
|
int type = godot_js_wrapper_object_getvar(p_args_id, Variant::INT, &exchange);
|
|
arg_arr.push_back(_js2variant(type, &exchange));
|
|
}
|
|
Variant arg = arg_arr;
|
|
const Variant *argv[1] = { &arg };
|
|
Variant::CallError err;
|
|
obj->_ref->call(obj->_method, argv, 1, err);
|
|
}
|
|
|
|
Ref<JavaScriptObject> JavaScript::create_callback(Object *p_ref, const StringName &p_method) {
|
|
Ref<JavaScriptObjectImpl> out = memnew(JavaScriptObjectImpl);
|
|
out->_ref = p_ref;
|
|
out->_method = p_method;
|
|
out->_js_id = godot_js_wrapper_create_cb(out.ptr(), JavaScriptObjectImpl::_callback);
|
|
return out;
|
|
}
|
|
|
|
Ref<JavaScriptObject> JavaScript::get_interface(const String &p_interface) {
|
|
int js_id = godot_js_wrapper_interface_get(p_interface.utf8().get_data());
|
|
ERR_FAIL_COND_V_MSG(!js_id, Ref<JavaScriptObject>(), "No interface '" + p_interface + "' registered.");
|
|
return Ref<JavaScriptObject>(memnew(JavaScriptObjectImpl(js_id)));
|
|
}
|
|
|
|
Variant JavaScript::_create_object_bind(const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
|
|
if (p_argcount < 1) {
|
|
r_error.error = Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
|
|
r_error.argument = 0;
|
|
return Ref<JavaScriptObject>();
|
|
}
|
|
if (p_args[0]->get_type() != Variant::STRING) {
|
|
r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
|
|
r_error.argument = 0;
|
|
r_error.expected = Variant::STRING;
|
|
return Ref<JavaScriptObject>();
|
|
}
|
|
godot_js_wrapper_ex exchange;
|
|
const String object = *p_args[0];
|
|
void *lock = nullptr;
|
|
const Variant **args = p_argcount > 1 ? &p_args[1] : nullptr;
|
|
const int type = godot_js_wrapper_create_object(object.utf8().get_data(), (void **)args, p_argcount - 1, &JavaScriptObjectImpl::_variant2js, &exchange, &lock, &JavaScriptObjectImpl::_free_lock);
|
|
r_error.error = Variant::CallError::CALL_OK;
|
|
if (type < 0) {
|
|
r_error.error = Variant::CallError::CALL_ERROR_INSTANCE_IS_NULL;
|
|
return Ref<JavaScriptObject>();
|
|
}
|
|
return JavaScriptObjectImpl::_js2variant(type, &exchange);
|
|
}
|
|
|
|
extern "C" {
|
|
union js_eval_ret {
|
|
uint32_t b;
|
|
double d;
|
|
char *s;
|
|
};
|
|
|
|
extern int godot_js_eval(const char *p_js, int p_use_global_ctx, union js_eval_ret *p_union_ptr, void *p_byte_arr, void *p_byte_arr_write, void *(*p_callback)(void *p_ptr, void *p_ptr2, int p_len));
|
|
extern int godot_js_os_download_buffer(const uint8_t *p_buf, int p_buf_size, const char *p_name, const char *p_mime);
|
|
}
|
|
|
|
void *resize_poolbytearray_and_open_write(void *p_arr, void *r_write, int p_len) {
|
|
PoolByteArray *arr = (PoolByteArray *)p_arr;
|
|
PoolByteArray::Write *write = (PoolByteArray::Write *)r_write;
|
|
arr->resize(p_len);
|
|
*write = arr->write();
|
|
return write->ptr();
|
|
}
|
|
|
|
Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
|
|
PoolByteArray arr;
|
|
PoolByteArray::Write arr_write;
|
|
union js_eval_ret js_data;
|
|
memset(&js_data, 0, sizeof(js_data));
|
|
Variant::Type return_type = static_cast<Variant::Type>(godot_js_eval(p_code.utf8().get_data(), p_use_global_exec_context, &js_data, &arr, &arr_write, resize_poolbytearray_and_open_write));
|
|
|
|
switch (return_type) {
|
|
case Variant::BOOL:
|
|
return js_data.b == 1;
|
|
case Variant::REAL:
|
|
return js_data.d;
|
|
case Variant::STRING: {
|
|
String str = String::utf8(js_data.s);
|
|
free(js_data.s); // Must free the string allocated in JS.
|
|
return str;
|
|
}
|
|
case Variant::POOL_BYTE_ARRAY:
|
|
arr_write = PoolByteArray::Write();
|
|
return arr;
|
|
default:
|
|
return Variant();
|
|
}
|
|
}
|
|
|
|
#endif // JAVASCRIPT_EVAL_ENABLED
|
|
|
|
void JavaScript::download_buffer(Vector<uint8_t> p_arr, const String &p_name, const String &p_mime) {
|
|
godot_js_os_download_buffer(p_arr.ptr(), p_arr.size(), p_name.utf8().get_data(), p_mime.utf8().get_data());
|
|
}
|