2 * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <dpl/scoped_array.h>
19 #include <dpl/scoped_free.h>
20 #include "ScopedJSStringRef.h"
21 #include "Converter.h"
22 #include <dpl/log/log.h>
24 using namespace WrtDeviceApis::Commons;
26 namespace WrtDeviceApis {
27 namespace CommonsJavaScript {
28 Converter::Converter(JSContextRef context) : m_context(context)
31 Converter::~Converter()
34 JSObjectRef Converter::toJSObjectRef(const JSValueRef& arg)
37 Throw(NullPointerException);
39 JSValueRef exception = NULL;
40 JSObjectRef result = JSValueToObject(m_context, arg, &exception);
41 if ((NULL == result) || (NULL != exception)) {
42 ThrowMsg(ConversionException, "Couldn't convert to a JS Object.");
47 bool Converter::toBool(const JSValueRef& arg)
49 return JSValueToBoolean(m_context, arg);
52 unsigned char Converter::toUChar(const JSValueRef& arg)
54 return static_cast<unsigned char>(toChar(arg));
57 char Converter::toChar(const JSValueRef& arg)
59 double tmp = toNumber_(arg);
60 return (isNan(tmp) ? 0 : static_cast<char>(tmp));
63 int Converter::toInt(const JSValueRef& arg)
65 double tmp = toNumber_(arg);
66 return (isNan(tmp) ? 0 : static_cast<int>(tmp));
69 int Converter::toInt(const std::string &arg)
71 return static_cast<int>(toNumber_(arg));
74 long Converter::toLong(const JSValueRef& arg)
76 double tmp = toNumber_(arg);
77 return (isNan(tmp) ? 0 : static_cast<long>(tmp));
80 long long Converter::toLongLong(const JSValueRef& arg)
82 double tmp = toNumber_(arg);
83 return (isNan(tmp) ? 0 : static_cast<long long>(tmp));
86 unsigned long Converter::toULong(const JSValueRef& arg)
88 return static_cast<unsigned long>(toLong(arg));
91 std::size_t Converter::toSizeT(const JSValueRef& arg)
93 double tmp = toNumber_(arg);
94 return (isNan(tmp) ? 0 : static_cast<std::size_t>(tmp));
97 std::size_t Converter::toSizeT(const JSStringRef& arg)
99 return static_cast<std::size_t>(toNumber_(arg));
102 double Converter::toDouble(const JSValueRef& arg)
104 return toNumber_(arg);
107 std::string Converter::toString(int arg)
109 return toString_(arg);
112 std::string Converter::toString(unsigned long arg)
114 return toString_(arg);
117 std::string Converter::toString(long arg)
119 return toString_(arg);
122 std::string Converter::toString(std::size_t arg)
124 return toString_(arg);
127 std::string Converter::toString(const JSValueRef& arg)
129 return toString_(arg);
132 std::string Converter::tryString(const JSValueRef& arg)
134 if (!JSValueIsString(m_context, arg) &&
135 !JSValueIsNumber(m_context, arg) &&
136 !JSValueIsBoolean(m_context, arg))
138 ThrowMsg(ConversionException,
139 "Argument is not convertable to JS String.");
142 return toString_(arg);
145 std::string Converter::toDateString(const JSValueRef& arg)
147 if (!JSValueIsObject(m_context, arg)) {
148 ThrowMsg(ConversionException, "Argument is not JS Date.");
151 return toString_(arg);
154 std::string Converter::toString(const JSStringRef& arg)
157 size_t jsSize = JSStringGetMaximumUTF8CStringSize(arg);
160 DPL::ScopedArray<char> buffer(new char[jsSize]);
161 size_t written = JSStringGetUTF8CString(arg, buffer.Get(), jsSize);
162 if (written > jsSize) {
163 ThrowMsg(ConversionException,
164 "Conversion could not be fully performed.");
166 result = buffer.Get();
172 time_t Converter::toDateTimeT(const JSValueRef& arg)
174 struct tm tm = toDateTm(arg);
178 tm Converter::toDateTm(const JSValueRef& arg)
180 std::string stringDate = toDateString(arg);
182 char* currentLocale = setlocale(LC_TIME, NULL);
183 if (currentLocale == NULL) {
184 ThrowMsg(ConversionException, "Couldn't get current locale.");
186 DPL::ScopedFree<char> currentLocaleCopy(strdup(currentLocale));
187 if (setlocale(LC_TIME, "C") == NULL) {
188 ThrowMsg(ConversionException, "Couldn't set POSIX locale.");
190 if (strptime(stringDate.c_str(), "%a %b %d %Y %T", &result) == NULL) {
191 ThrowMsg(ConversionException, "Couldn't convert supplied date.");
193 if (setlocale(LC_TIME, currentLocaleCopy.Get()) == NULL) {
194 ThrowMsg(ConversionException, "Couldn't set previous locale back.");
196 //strptime function doesn't affect tm_isdst flag.
197 //It may cause -1hr conversion error. Setting it to -1 informs that
198 //there is no information about daylight saving time.
199 result.tm_isdst = -1;
203 std::vector<unsigned char> Converter::toVectorOfUChars(const JSValueRef& arg)
205 return toVectorOfT_(arg, &Converter::toUChar);
208 std::vector<char> Converter::toVectorOfChars(const JSValueRef& arg)
210 return toVectorOfT_(arg, &Converter::toChar);
213 std::vector<int> Converter::toVectorOfInts(const JSValueRef& arg)
215 return toVectorOfT_(arg, &Converter::toInt);
218 std::vector<std::string> Converter::toVectorOfStrings(const JSValueRef& arg)
220 return toVectorOfT_(arg, &Converter::toString);
223 std::vector<time_t> Converter::toVectorOfTimeT(const JSValueRef& arg)
225 return toVectorOfT_(arg, &Converter::toDateTimeT);
228 JSValueRef Converter::toJSValueRef(bool arg)
230 return JSValueMakeBoolean(m_context, arg);
233 JSValueRef Converter::toJSValueRef(int arg)
235 return JSValueMakeNumber(m_context, arg);
238 JSValueRef Converter::toJSValueRef(unsigned int arg)
240 return JSValueMakeNumber(m_context, arg);
243 JSValueRef Converter::toJSValueRef(unsigned long arg)
245 return JSValueMakeNumber(m_context, arg);
248 JSValueRef Converter::toJSValueRefLong(const long arg)
250 return JSValueMakeNumber(m_context, arg);
253 JSValueRef Converter::toJSValueRef(long long int arg)
255 return JSValueMakeNumber(m_context, arg);
258 JSValueRef Converter::toJSValueRef(double arg)
260 return JSValueMakeNumber(m_context, arg);
263 JSValueRef Converter::toJSValueRef(const std::string& arg)
265 JSValueRef result = NULL;
266 JSStringRef jsString = JSStringCreateWithUTF8CString(arg.c_str());
267 result = JSValueMakeString(m_context, jsString);
268 JSStringRelease(jsString);
272 JSValueRef Converter::toJSValueRef(const tm& arg)
275 args[0] = JSValueMakeNumber(m_context, arg.tm_year + 1900);
276 args[1] = JSValueMakeNumber(m_context, arg.tm_mon);
277 args[2] = JSValueMakeNumber(m_context, arg.tm_mday);
278 args[3] = JSValueMakeNumber(m_context, arg.tm_hour);
279 args[4] = JSValueMakeNumber(m_context, arg.tm_min);
280 args[5] = JSValueMakeNumber(m_context, arg.tm_sec);
282 JSValueRef exception = NULL;
283 JSObjectRef result = JSObjectMakeDate(m_context, 6, args, &exception);
284 if (NULL != exception) {
285 ThrowMsg(ConversionException, "Couldn't convert to a JS Date.");
291 JSValueRef Converter::toJSValueRef(const time_t arg)
293 struct tm *tminfo = localtime(&arg);
294 return toJSValueRef(*tminfo);
297 JSValueRef Converter::toJSValueRef(const std::vector<std::string>& arg)
299 return toJSValueRef_(arg);
302 JSValueRef Converter::toJSValueRef(const char* arg)
304 return toJSValueRef(std::string(arg));
307 JSValueRef Converter::toJSValueRef(const std::vector<int>& arg)
309 return toJSValueRef_(arg);
312 JSValueRef Converter::toJSValueRef(const std::vector<time_t>& arg)
314 return toJSValueRef_(arg);
317 JSValueRef Converter::toJSValueRef(JSValueRef arg)
322 JSValueRef Converter::toJSValueRef(const std::vector<JSValueRef>& arg)
324 return toJSValueRef_(arg);
327 JSStringRef Converter::toJSStringRef(const std::string& arg)
329 return JSStringCreateWithUTF8CString(arg.c_str());
332 double Converter::toNumber_(const JSStringRef& arg)
334 return toNumber_(toString(arg));
337 double Converter::toNumber_(const std::string& arg)
340 std::stringstream ss(arg);
341 if (!(ss >> result)) {
342 Throw(ConversionException);
347 double Converter::toNumber_(const JSValueRef& arg)
349 JSValueRef exception = NULL;
350 double result = JSValueToNumber(m_context, arg, &exception);
351 if (NULL != exception) {
352 ThrowMsg(ConversionException, "Couldn't convert to a number.");
357 std::string Converter::toString_(const JSValueRef& arg)
361 JSValueRef exception = NULL;
362 JSStringRef str = JSValueToStringCopy(m_context, arg, &exception);
364 ThrowMsg(ConversionException, "Couldn't cast to a string.");
367 size_t jsSize = JSStringGetMaximumUTF8CStringSize(str);
369 DPL::ScopedArray<char> buffer(new char[jsSize]);
370 JSStringGetUTF8CString(str, buffer.Get(), jsSize);
371 result = buffer.Get();
373 JSStringRelease(str);
377 bool Converter::isNan(double value) const
379 // This should work unless -ffast-math (GCC) option is used.
380 STATIC_CHECK(std::numeric_limits<double>::is_iec559,
381 NOT_IEEE754_REPRESENTATION);
382 return (value != value);
384 } // CommonsJavaScript