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Rework open mode parsing in TNetXNGFile #22778

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Rework open mode parsing in TNetXNGFile #22778

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28 changes: 19 additions & 9 deletions net/netxng/src/TNetXNGFile.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,8 @@
#include <XrdVersion.hh>
#include <iostream>

#include <ROOT/StringUtils.hxx>

namespace {

Int_t ParseOpenMode(Option_t *in, TString &modestr, int &mode, Bool_t assumeRead);
Expand Down Expand Up @@ -177,7 +179,7 @@ TNetXNGFile::TNetXNGFile(const char *url, const char *lurl, Option_t *mode, cons
fReadvIorMax = 2097136;
fReadvIovMax = 1024;

if (ParseOpenMode(mode, fOption, fMode, kTRUE)<0) {
if (ParseOpenMode(mode, fOption, fMode, kTRUE) < 0) {
Error("Open", "could not parse open mode %s", mode);
MakeZombie();
return;
Expand Down Expand Up @@ -708,19 +710,27 @@ Int_t ParseOpenMode(Option_t *in, TString &modestr, int &mode, Bool_t assumeRead
using namespace XrdCl;
modestr = ToUpper(TString(in));

if (modestr == "NEW" || modestr == "CREATE") mode = OpenFlags::New;
else if (modestr == "RECREATE") mode = OpenFlags::Delete;
else if (modestr == "UPDATE") mode = OpenFlags::Update;
else if (modestr == "READ") mode = OpenFlags::Read;
else {
if (!assumeRead) {
return -1;
const static std::unordered_map<std::string, OpenFlags::Flags> strToFlagMap{{"CREATE", OpenFlags::New},
{"NEW", OpenFlags::New},
{"READ", OpenFlags::Read},
{"RECREATE", OpenFlags::Delete},
{"UPDATE", OpenFlags::Update}};

const auto tokens = ROOT::Split(modestr, "_ ", /*skipEmpty*/ true);
for (const auto &token : tokens) {
if (auto it = strToFlagMap.find(token); it != strToFlagMap.end()) {
mode = it->second;
return 0;
}
}

if (assumeRead) {
modestr = "READ";
mode = OpenFlags::Read;
return 0;
}

return 0;
return -1;
}

} // namespace
Expand Down
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