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//===-- OptionValuePathMappings.cpp ---------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Interpreter/OptionValuePathMappings.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Host/StringConvert.h"
#include "lldb/Utility/Args.h"
#include "lldb/Utility/FileSpec.h"
#include "lldb/Utility/Stream.h"
using namespace lldb;
using namespace lldb_private;
namespace {
static bool VerifyPathExists(const char *path) {
if (path && path[0])
return FileSystem::Instance().Exists(path);
else
return false;
}
}
void OptionValuePathMappings::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.Printf(" =%s", (m_path_mappings.GetSize() > 0) ? "\n" : "");
m_path_mappings.Dump(&strm);
}
}
Status OptionValuePathMappings::SetValueFromString(llvm::StringRef value,
VarSetOperationType op) {
Status error;
Args args(value.str());
const size_t argc = args.GetArgumentCount();
switch (op) {
case eVarSetOperationClear:
Clear();
NotifyValueChanged();
break;
case eVarSetOperationReplace:
// Must be at least one index + 1 pair of paths, and the pair count must be
// even
if (argc >= 3 && (((argc - 1) & 1) == 0)) {
uint32_t idx =
StringConvert::ToUInt32(args.GetArgumentAtIndex(0), UINT32_MAX);
const uint32_t count = m_path_mappings.GetSize();
if (idx > count) {
error.SetErrorStringWithFormat(
"invalid file list index %u, index must be 0 through %u", idx,
count);
} else {
bool changed = false;
for (size_t i = 1; i < argc; idx++, i += 2) {
const char *orginal_path = args.GetArgumentAtIndex(i);
const char *replace_path = args.GetArgumentAtIndex(i + 1);
if (VerifyPathExists(replace_path)) {
ConstString a(orginal_path);
ConstString b(replace_path);
if (!m_path_mappings.Replace(a, b, idx, m_notify_changes))
m_path_mappings.Append(a, b, m_notify_changes);
changed = true;
} else {
std::string previousError =
error.Fail() ? std::string(error.AsCString()) + "\n" : "";
error.SetErrorStringWithFormat(
"%sthe replacement path doesn't exist: \"%s\"",
previousError.c_str(), replace_path);
}
}
if (changed)
NotifyValueChanged();
}
} else {
error.SetErrorString("replace operation takes an array index followed by "
"one or more path pairs");
}
break;
case eVarSetOperationAssign:
if (argc < 2 || (argc & 1)) {
error.SetErrorString("assign operation takes one or more path pairs");
break;
}
m_path_mappings.Clear(m_notify_changes);
// Fall through to append case
LLVM_FALLTHROUGH;
case eVarSetOperationAppend:
if (argc < 2 || (argc & 1)) {
error.SetErrorString("append operation takes one or more path pairs");
break;
} else {
bool changed = false;
for (size_t i = 0; i < argc; i += 2) {
const char *orginal_path = args.GetArgumentAtIndex(i);
const char *replace_path = args.GetArgumentAtIndex(i + 1);
if (VerifyPathExists(replace_path)) {
ConstString a(orginal_path);
ConstString b(replace_path);
m_path_mappings.Append(a, b, m_notify_changes);
m_value_was_set = true;
changed = true;
} else {
std::string previousError =
error.Fail() ? std::string(error.AsCString()) + "\n" : "";
error.SetErrorStringWithFormat(
"%sthe replacement path doesn't exist: \"%s\"",
previousError.c_str(), replace_path);
}
}
if (changed)
NotifyValueChanged();
}
break;
case eVarSetOperationInsertBefore:
case eVarSetOperationInsertAfter:
// Must be at least one index + 1 pair of paths, and the pair count must be
// even
if (argc >= 3 && (((argc - 1) & 1) == 0)) {
uint32_t idx =
StringConvert::ToUInt32(args.GetArgumentAtIndex(0), UINT32_MAX);
const uint32_t count = m_path_mappings.GetSize();
if (idx > count) {
error.SetErrorStringWithFormat(
"invalid file list index %u, index must be 0 through %u", idx,
count);
} else {
bool changed = false;
if (op == eVarSetOperationInsertAfter)
++idx;
for (size_t i = 1; i < argc; i += 2) {
const char *orginal_path = args.GetArgumentAtIndex(i);
const char *replace_path = args.GetArgumentAtIndex(i + 1);
if (VerifyPathExists(replace_path)) {
ConstString a(orginal_path);
ConstString b(replace_path);
m_path_mappings.Insert(a, b, idx, m_notify_changes);
changed = true;
idx++;
} else {
std::string previousError =
error.Fail() ? std::string(error.AsCString()) + "\n" : "";
error.SetErrorStringWithFormat(
"%sthe replacement path doesn't exist: \"%s\"",
previousError.c_str(), replace_path);
}
}
if (changed)
NotifyValueChanged();
}
} else {
error.SetErrorString("insert operation takes an array index followed by "
"one or more path pairs");
}
break;
case eVarSetOperationRemove:
if (argc > 0) {
std::vector<int> remove_indexes;
for (size_t i = 0; i < argc; ++i) {
int idx =
StringConvert::ToSInt32(args.GetArgumentAtIndex(i), INT32_MAX);
if (idx < 0 || idx >= (int)m_path_mappings.GetSize()) {
error.SetErrorStringWithFormat(
"invalid array index '%s', aborting remove operation",
args.GetArgumentAtIndex(i));
break;
} else
remove_indexes.push_back(idx);
}
// Sort and then erase in reverse so indexes are always valid
llvm::sort(remove_indexes.begin(), remove_indexes.end());
for (auto index : llvm::reverse(remove_indexes))
m_path_mappings.Remove(index, m_notify_changes);
NotifyValueChanged();
} else {
error.SetErrorString("remove operation takes one or more array index");
}
break;
case eVarSetOperationInvalid:
error = OptionValue::SetValueFromString(value, op);
break;
}
return error;
}
lldb::OptionValueSP OptionValuePathMappings::DeepCopy() const {
return OptionValueSP(new OptionValuePathMappings(*this));
}
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