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[bun.js] Add atob and btoa

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This commit is contained in:
Jarred Sumner
2022-03-04 03:30:29 -08:00
parent c53dc308be
commit 29f240ac79
2 changed files with 157 additions and 2 deletions
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81
src/javascript/jsc/bindings/ZigGlobalObject.cpp
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@@ -65,7 +65,7 @@
#include <cstdlib>
#include <exception>
#include <iostream>
#include <wtf/text/Base64.h>
// #include <JavaScriptCore/CachedType.h>
#include <JavaScriptCore/JSCallbackObject.h>
#include <JavaScriptCore/JSClassRef.h>
@@ -455,13 +455,76 @@ static JSC_DEFINE_HOST_FUNCTION(functionClearTimeout,
return Bun__Timer__clearTimeout(globalObject, JSC::JSValue::encode(num));
}
static JSC_DECLARE_HOST_FUNCTION(functionBTOA);
static JSC_DEFINE_HOST_FUNCTION(functionBTOA,
(JSC::JSGlobalObject * globalObject, JSC::CallFrame* callFrame))
{
JSC::VM& vm = globalObject->vm();
if (callFrame->argumentCount() == 0) {
auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
JSC::throwTypeError(globalObject, scope, "btoa requires 1 argument (a string)"_s);
return JSC::JSValue::encode(JSC::JSValue {});
}
const String& stringToEncode = callFrame->argument(0).toWTFString(globalObject);
if (!stringToEncode || stringToEncode.isNull()) {
return JSC::JSValue::encode(JSC::jsString(vm, WTF::String()));
}
if (!stringToEncode.isAllLatin1()) {
auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
// TODO: DOMException
JSC::throwTypeError(globalObject, scope, "The string contains invalid characters."_s);
return JSC::JSValue::encode(JSC::JSValue {});
}
return JSC::JSValue::encode(JSC::jsString(vm, WTF::base64EncodeToString(stringToEncode.latin1())));
}
static JSC_DECLARE_HOST_FUNCTION(functionATOB);
static JSC_DEFINE_HOST_FUNCTION(functionATOB,
(JSC::JSGlobalObject * globalObject, JSC::CallFrame* callFrame))
{
JSC::VM& vm = globalObject->vm();
if (callFrame->argumentCount() == 0) {
auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
JSC::throwTypeError(globalObject, scope, "atob requires 1 argument (a string)"_s);
return JSC::JSValue::encode(JSC::JSValue {});
}
const WTF::String& encodedString = callFrame->argument(0).toWTFString(globalObject);
if (encodedString.isNull()) {
return JSC::JSValue::encode(JSC::jsString(vm, ""));
}
auto decodedData = WTF::base64Decode(encodedString, {
WTF::Base64DecodeOptions::ValidatePadding,
WTF::Base64DecodeOptions::IgnoreSpacesAndNewLines,
WTF::Base64DecodeOptions::DiscardVerticalTab,
});
if (!decodedData) {
auto scope = DECLARE_THROW_SCOPE(globalObject->vm());
// TODO: DOMException
JSC::throwTypeError(globalObject, scope, "The string contains invalid characters."_s);
return JSC::JSValue::encode(JSC::JSValue {});
}
return JSC::JSValue::encode(JSC::jsString(vm, WTF::String(decodedData->data(), decodedData->size())));
}
// This is not a publicly exposed API currently.
// This is used by the bundler to make Response, Request, FetchEvent,
// and any other objects available globally.
void GlobalObject::installAPIGlobals(JSClassRef* globals, int count)
{
WTF::Vector<GlobalPropertyInfo> extraStaticGlobals;
extraStaticGlobals.reserveCapacity((size_t)count + 3 + 4);
extraStaticGlobals.reserveCapacity((size_t)count + 3 + 7);
int i = 0;
for (; i < count - 1; i++) {
@@ -531,6 +594,20 @@ void GlobalObject::installAPIGlobals(JSClassRef* globals, int count)
"clearInterval", functionClearInterval),
JSC::PropertyAttribute::DontDelete | 0 });
JSC::Identifier atobIdentifier = JSC::Identifier::fromString(vm(), "atob"_s);
extraStaticGlobals.uncheckedAppend(
GlobalPropertyInfo { atobIdentifier,
JSC::JSFunction::create(vm(), JSC::jsCast<JSC::JSGlobalObject*>(this), 0,
"atob", functionATOB),
JSC::PropertyAttribute::DontDelete | 0 });
JSC::Identifier btoaIdentifier = JSC::Identifier::fromString(vm(), "btoa"_s);
extraStaticGlobals.uncheckedAppend(
GlobalPropertyInfo { btoaIdentifier,
JSC::JSFunction::create(vm(), JSC::jsCast<JSC::JSGlobalObject*>(this), 0,
"btoa", functionBTOA),
JSC::PropertyAttribute::DontDelete | 0 });
auto clientData = Bun::clientData(vm());
this->addStaticGlobals(extraStaticGlobals.data(), extraStaticGlobals.size());