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#include "url_query.h"
#include <yql/essentials/public/udf/udf_type_printer.h>
#include <util/string/split.h>
#include <library/cpp/string_utils/quote/quote.h>
namespace NUrlUdf {
void TQueryStringParse::MakeSignature(IFunctionTypeInfoBuilder& builder,
const TType* retType)
{
builder.Returns(retType).OptionalArgs(4);
auto args = builder.Args();
args->Add<TAutoMap<TQueryStr>>();
args->Add<TKeepBlankValuesNArg>();
args->Add<TStrictNArg>();
args->Add<TMaxFieldsNArg>();
args->Add<TSeparatorNArg>().Done();
}
std::vector<std::pair<TString, TString>>
TQueryStringParse::RunImpl(const TUnboxedValuePod* args) const {
const std::string_view query(args[0].AsStringRef());
if (query.empty())
return {};
const bool keepBlankValues = args[1].GetOrDefault(false);
const bool strict = args[2].GetOrDefault(true);
const ui32 maxFieldCnt = args[3].GetOrDefault(Max<ui32>());
const std::string_view sep(args[4] ? args[4].AsStringRef() : "&");
std::vector<TStringBuf> parts;
StringSplitter(query).SplitByString(sep).Collect(&parts);
if (parts.size() > maxFieldCnt) {
UdfTerminate((TStringBuilder() << Pos_ << "Max number of fields (" << maxFieldCnt
<< ") exceeded: got " << parts.size()).data());
}
std::vector<std::pair<TString, TString>> pairs;
for (const TStringBuf& part: parts) {
if (part.empty() && !strict) {
continue;
}
TVector<TString> nvPair = StringSplitter(part).Split('=').Limit(2);
if (nvPair.size() != 2) {
if (strict) {
UdfTerminate((TStringBuilder() << Pos_ << "Bad query field: \""
<< nvPair[0] << "\"").data());
}
if (keepBlankValues) {
nvPair.emplace_back("");
} else {
continue;
}
}
if (!nvPair[1].empty() || keepBlankValues) {
CGIUnescape(nvPair[0]);
CGIUnescape(nvPair[1]);
pairs.emplace_back(nvPair[0], nvPair[1]);
}
}
return pairs;
}
bool TQueryStringToList::DeclareSignature(const TStringRef& name,
TType*,
IFunctionTypeInfoBuilder& builder,
bool typesOnly) {
if (Name() == name) {
MakeSignature(builder, GetListType(builder));
if (!typesOnly) {
builder.Implementation(new TQueryStringToList(builder.GetSourcePosition()));
}
return true;
}
return false;
}
TUnboxedValue TQueryStringToList::Run(const IValueBuilder* valueBuilder,
const TUnboxedValuePod* args) const {
const auto pairs = RunImpl(args);
std::vector<TUnboxedValue> ret;
for (const auto& nvPair : pairs) {
TUnboxedValue* pair = nullptr;
auto item = valueBuilder->NewArray(2U, pair);
pair[0] = valueBuilder->NewString(nvPair.first);
pair[1] = valueBuilder->NewString(nvPair.second);
ret.push_back(item);
}
return valueBuilder->NewList(ret.data(), ret.size());
}
bool TQueryStringToDict::DeclareSignature(const TStringRef& name,
TType*,
IFunctionTypeInfoBuilder& builder,
bool typesOnly) {
if (Name() == name) {
auto dictType = GetDictType(builder);
MakeSignature(builder, dictType);
if (!typesOnly) {
builder.Implementation(new TQueryStringToDict(dictType,
builder.GetSourcePosition()));
}
return true;
}
return false;
}
TUnboxedValue TQueryStringToDict::Run(const IValueBuilder* valueBuilder,
const TUnboxedValuePod* args) const {
const auto pairs = RunImpl(args);
auto ret = valueBuilder->NewDict(DictType_, TDictFlags::Hashed | TDictFlags::Multi);
for (const auto& nvPair : pairs) {
ret->Add(valueBuilder->NewString(nvPair.first),
valueBuilder->NewString(nvPair.second));
}
return ret->Build();
}
TUnboxedValue TBuildQueryString::Run(const IValueBuilder* valueBuilder,
const TUnboxedValuePod* args) const {
const std::string_view sep(args[1] ? args[1].AsStringRef() : "&");
TStringBuilder ret;
switch(FirstArgTypeId_) {
case EFirstArgTypeId::Dict: {
TUnboxedValue key, value;
const auto dictIt = args[0].GetDictIterator();
ui64 wasItem = 0;
while (dictIt.NextPair(key, value)) {
TString keyEscaped = CGIEscapeRet(key.AsStringRef());
const auto listIt = value.GetListIterator();
TUnboxedValue item;
while (listIt.Next(item)) {
if (wasItem++)
ret << sep;
if (item) {
ret << keyEscaped << '=' << CGIEscapeRet(item.AsStringRef());
} else {
ret << keyEscaped << '=';
}
}
}
break;
}
case EFirstArgTypeId::FlattenDict: {
TUnboxedValue key, value;
const auto dictIt = args[0].GetDictIterator();
ui64 wasKey = 0;
while (dictIt.NextPair(key, value)) {
if (wasKey++)
ret << sep;
if (value) {
ret << CGIEscapeRet(key.AsStringRef()) << '='
<< CGIEscapeRet(value.AsStringRef());
} else {
ret << CGIEscapeRet(key.AsStringRef()) << '=';
}
}
break;
}
case EFirstArgTypeId::List: {
ui64 wasItem = 0;
TUnboxedValue item;
const auto listIt = args[0].GetListIterator();
while (listIt.Next(item)) {
if (wasItem++)
ret << sep;
TUnboxedValue key = item.GetElement(0), val = item.GetElement(1);
if (val) {
ret << CGIEscapeRet(key.AsStringRef()) << '='
<< CGIEscapeRet(val.AsStringRef());
} else {
ret << CGIEscapeRet(key.AsStringRef()) << '=';
}
}
break;
}
default:
Y_ABORT("Current first parameter type is not yet implemented");
}
return valueBuilder->NewString(ret);
}
bool TBuildQueryString::DeclareSignature(const TStringRef& name,
TType* userType,
IFunctionTypeInfoBuilder& builder,
bool typesOnly) {
if (Name() == name) {
if (!userType) {
builder.SetError("Missing user type");
return true;
}
builder.UserType(userType);
const auto typeHelper = builder.TypeInfoHelper();
const auto userTypeInspector = TTupleTypeInspector(*typeHelper, userType);
if (!userTypeInspector || !userTypeInspector.GetElementsCount()) {
builder.SetError("User type is not tuple");
return true;
}
const auto argsTypeInspector = TTupleTypeInspector(*typeHelper,
userTypeInspector.GetElementType(0));
if (!argsTypeInspector || !argsTypeInspector.GetElementsCount()) {
builder.SetError("Please provide at least one argument");
return true;
}
const auto firstArgType = argsTypeInspector.GetElementType(0);
EFirstArgTypeId firstArgTypeId = EFirstArgTypeId::None;
if (typeHelper->IsSameType(GetDictType(builder), firstArgType) ||
typeHelper->IsSameType(GetDictType(builder, true), firstArgType)) {
firstArgTypeId = EFirstArgTypeId::Dict;
} else if (typeHelper->IsSameType(GetListType(builder), firstArgType) ||
typeHelper->IsSameType(GetListType(builder, true), firstArgType) ||
typeHelper->GetTypeKind(firstArgType) == ETypeKind::EmptyList)
{
firstArgTypeId = EFirstArgTypeId::List;
} else if (typeHelper->IsSameType(GetFlattenDictType(builder), firstArgType) ||
typeHelper->IsSameType(GetFlattenDictType(builder, true), firstArgType) ||
typeHelper->GetTypeKind(firstArgType) == ETypeKind::EmptyDict)
{
firstArgTypeId = EFirstArgTypeId::FlattenDict;
}
if (firstArgTypeId != EFirstArgTypeId::None) {
builder.Returns<TQueryStr>().OptionalArgs(1);
auto args = builder.Args();
args->Add(firstArgType).Flags(ICallablePayload::TArgumentFlags::AutoMap);
args->Add<TSeparatorNArg>().Done();
if (!typesOnly) {
builder.Implementation(new TBuildQueryString(builder.GetSourcePosition(),
firstArgTypeId));
}
} else {
TStringBuilder sb;
sb << "Unsupported first argument type: ";
TTypePrinter(*typeHelper, firstArgType).Out(sb.Out);
builder.SetError(sb);
}
return true;
}
return false;
}
}
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