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Set history size to ${CLING_HISTSIZE}

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It was left unset. Then the default hist size was

static_cast<size_t>(-1), which is practically equivalent to unlimited

history size.
This commit is contained in:
Jiang Yi 2022-08-30 14:52:14 +02:00 committed by jenkins
parent d47b49c3ee
commit 392d5365d5
1 changed files with 13 additions and 1 deletions
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14
lib/UserInterface/UserInterface.cpp
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@ -13,9 +13,10 @@
#include "cling/MetaProcessor/MetaProcessor.h"
#include "cling/Utils/Output.h"
#include "textinput/Callbacks.h"
#include "textinput/TextInput.h"
#include "textinput/History.h"
#include "textinput/StreamReader.h"
#include "textinput/TerminalDisplay.h"
#include "textinput/TextInput.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/ErrorHandling.h"
@ -95,6 +96,17 @@ namespace cling {
TI->SetCompletion(Completion.get());
if (const char* HistSizeEnvvar = std::getenv("CLING_HISTSIZE")) {
const size_t HistSize = std::strtoull(HistSizeEnvvar, nullptr, 0);
// std::strtoull() returns 0 if the parsing fails.
// zero HistSize will disable history logging to file.
// refer to textinput::History::AppendToFile()
TI->SetHistoryMaxDepth(HistSize);
TI->SetHistoryPruneLength(
static_cast<size_t>(textinput::History::kPruneLengthDefault));
}
bool Done = false;
std::string Line;
std::string Prompt("[cling]$ ");