llvm-project/lldb/source/Interpreter/OptionValueFileSpec.cpp

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//===-- OptionValueFileSpec.cpp ---------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Interpreter/OptionValueFileSpec.h"
#include "lldb/Core/State.h"
#include "lldb/DataFormatters/FormatManager.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Interpreter/Args.h"
#include "lldb/Interpreter/CommandCompletions.h"
#include "lldb/Interpreter/CommandInterpreter.h"
using namespace lldb;
using namespace lldb_private;
OptionValueFileSpec::OptionValueFileSpec(bool resolve)
: OptionValue(), m_current_value(), m_default_value(), m_data_sp(),
m_data_mod_time(),
m_completion_mask(CommandCompletions::eDiskFileCompletion),
m_resolve(resolve) {}
OptionValueFileSpec::OptionValueFileSpec(const FileSpec &value, bool resolve)
: OptionValue(), m_current_value(value), m_default_value(value),
m_data_sp(), m_data_mod_time(),
m_completion_mask(CommandCompletions::eDiskFileCompletion),
m_resolve(resolve) {}
OptionValueFileSpec::OptionValueFileSpec(const FileSpec &current_value,
const FileSpec &default_value,
bool resolve)
: OptionValue(), m_current_value(current_value),
m_default_value(default_value), m_data_sp(), m_data_mod_time(),
m_completion_mask(CommandCompletions::eDiskFileCompletion),
m_resolve(resolve) {}
void OptionValueFileSpec::DumpValue(const ExecutionContext *exe_ctx,
Stream &strm, uint32_t dump_mask) {
if (dump_mask & eDumpOptionType)
strm.Printf("(%s)", GetTypeAsCString());
if (dump_mask & eDumpOptionValue) {
if (dump_mask & eDumpOptionType)
strm.PutCString(" = ");
if (m_current_value) {
strm << '"' << m_current_value.GetPath().c_str() << '"';
}
}
}
Error OptionValueFileSpec::SetValueFromString(llvm::StringRef value,
VarSetOperationType op) {
Error error;
switch (op) {
case eVarSetOperationClear:
Clear();
NotifyValueChanged();
break;
case eVarSetOperationReplace:
case eVarSetOperationAssign:
if (value.size() > 0) {
// The setting value may have whitespace, double-quotes, or single-quotes
// around the file
// path to indicate that internal spaces are not word breaks. Strip off
// any ws & quotes
// from the start and end of the file path - we aren't doing any word //
// breaking here so
// the quoting is unnecessary. NB this will cause a problem if someone
// tries to specify
// a file path that legitimately begins or ends with a " or ' character,
// or whitespace.
value = value.trim("\"' \t");
m_value_was_set = true;
m_current_value.SetFile(value.str(), m_resolve);
m_data_sp.reset();
m_data_mod_time = llvm::sys::TimePoint<>();
NotifyValueChanged();
} else {
error.SetErrorString("invalid value string");
}
break;
case eVarSetOperationInsertBefore:
case eVarSetOperationInsertAfter:
case eVarSetOperationRemove:
case eVarSetOperationAppend:
case eVarSetOperationInvalid:
error = OptionValue::SetValueFromString(value, op);
break;
}
return error;
}
lldb::OptionValueSP OptionValueFileSpec::DeepCopy() const {
return OptionValueSP(new OptionValueFileSpec(*this));
}
size_t OptionValueFileSpec::AutoComplete(
CommandInterpreter &interpreter, llvm::StringRef s, int match_start_point,
int max_return_elements, bool &word_complete, StringList &matches) {
word_complete = false;
matches.Clear();
CommandCompletions::InvokeCommonCompletionCallbacks(
interpreter, m_completion_mask, s, match_start_point, max_return_elements,
nullptr, word_complete, matches);
return matches.GetSize();
}
const lldb::DataBufferSP &
OptionValueFileSpec::GetFileContents(bool null_terminate) {
if (m_current_value) {
const auto file_mod_time = FileSystem::GetModificationTime(m_current_value);
if (m_data_sp && m_data_mod_time == file_mod_time)
return m_data_sp;
if (null_terminate)
m_data_sp = m_current_value.ReadFileContentsAsCString();
else
m_data_sp = m_current_value.ReadFileContents();
m_data_mod_time = file_mod_time;
}
return m_data_sp;
}