1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "fxjs/js_define.h"
8
9 #include <algorithm>
10 #include <cmath>
11 #include <limits>
12 #include <vector>
13
14 #include "core/fxcrt/fx_extension.h"
15 #include "fxjs/cjs_document.h"
16 #include "fxjs/cjs_object.h"
17 #include "fxjs/fx_date_helpers.h"
18
JSDestructor(v8::Local<v8::Object> obj)19 void JSDestructor(v8::Local<v8::Object> obj) {
20 CFXJS_Engine::SetObjectPrivate(obj, nullptr);
21 }
22
JS_DateParse(const WideString & str)23 double JS_DateParse(const WideString& str) {
24 v8::Isolate* pIsolate = v8::Isolate::GetCurrent();
25 v8::Isolate::Scope isolate_scope(pIsolate);
26 v8::HandleScope scope(pIsolate);
27
28 v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
29
30 // Use the built-in object method.
31 v8::Local<v8::Value> v =
32 context->Global()
33 ->Get(context, v8::String::NewFromUtf8(pIsolate, "Date",
34 v8::NewStringType::kNormal)
35 .ToLocalChecked())
36 .ToLocalChecked();
37 if (v->IsObject()) {
38 v8::Local<v8::Object> o = v->ToObject(context).ToLocalChecked();
39 v = o->Get(context, v8::String::NewFromUtf8(pIsolate, "parse",
40 v8::NewStringType::kNormal)
41 .ToLocalChecked())
42 .ToLocalChecked();
43 if (v->IsFunction()) {
44 v8::Local<v8::Function> funC = v8::Local<v8::Function>::Cast(v);
45 const int argc = 1;
46 v8::Local<v8::Value> timeStr =
47 v8::String::NewFromUtf8(pIsolate,
48 FX_UTF8Encode(str.AsStringView()).c_str(),
49 v8::NewStringType::kNormal)
50 .ToLocalChecked();
51 v8::Local<v8::Value> argv[argc] = {timeStr};
52 v = funC->Call(context, context->Global(), argc, argv).ToLocalChecked();
53 if (v->IsNumber()) {
54 double date = v->ToNumber(context).ToLocalChecked()->Value();
55 if (!std::isfinite(date))
56 return date;
57 return FX_LocalTime(date);
58 }
59 }
60 }
61 return 0;
62 }
63
ExpandKeywordParams(CJS_Runtime * pRuntime,const std::vector<v8::Local<v8::Value>> & originals,size_t nKeywords,...)64 std::vector<v8::Local<v8::Value>> ExpandKeywordParams(
65 CJS_Runtime* pRuntime,
66 const std::vector<v8::Local<v8::Value>>& originals,
67 size_t nKeywords,
68 ...) {
69 ASSERT(nKeywords);
70
71 std::vector<v8::Local<v8::Value>> result(nKeywords, v8::Local<v8::Value>());
72 size_t size = std::min(originals.size(), nKeywords);
73 for (size_t i = 0; i < size; ++i)
74 result[i] = originals[i];
75
76 if (originals.size() != 1 || !originals[0]->IsObject() ||
77 originals[0]->IsArray()) {
78 return result;
79 }
80 result[0] = v8::Local<v8::Value>(); // Make unknown.
81
82 v8::Local<v8::Object> pObj = pRuntime->ToObject(originals[0]);
83 va_list ap;
84 va_start(ap, nKeywords);
85 for (size_t i = 0; i < nKeywords; ++i) {
86 const char* property = va_arg(ap, const char*);
87 v8::Local<v8::Value> v8Value = pRuntime->GetObjectProperty(pObj, property);
88 if (!v8Value->IsUndefined())
89 result[i] = v8Value;
90 }
91 va_end(ap);
92
93 return result;
94 }
95
IsExpandedParamKnown(v8::Local<v8::Value> value)96 bool IsExpandedParamKnown(v8::Local<v8::Value> value) {
97 return !value.IsEmpty() &&
98 (value->IsString() || value->IsNumber() || value->IsBoolean() ||
99 value->IsDate() || value->IsObject() || value->IsNull() ||
100 value->IsUndefined());
101 }
102