| //===-- CommandObjectRegexCommand.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 "CommandObjectRegexCommand.h" |
| #include "lldb/Interpreter/CommandInterpreter.h" |
| #include "lldb/Interpreter/CommandReturnObject.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| // CommandObjectRegexCommand constructor |
| CommandObjectRegexCommand::CommandObjectRegexCommand( |
| CommandInterpreter &interpreter, llvm::StringRef name, llvm::StringRef help, |
| llvm::StringRef syntax, uint32_t max_matches, uint32_t completion_type_mask, |
| bool is_removable) |
| : CommandObjectRaw(interpreter, name, help, syntax), |
| m_max_matches(max_matches), m_completion_type_mask(completion_type_mask), |
| m_entries(), m_is_removable(is_removable) {} |
| |
| // Destructor |
| CommandObjectRegexCommand::~CommandObjectRegexCommand() = default; |
| |
| bool CommandObjectRegexCommand::DoExecute(llvm::StringRef command, |
| CommandReturnObject &result) { |
| EntryCollection::const_iterator pos, end = m_entries.end(); |
| for (pos = m_entries.begin(); pos != end; ++pos) { |
| llvm::SmallVector<llvm::StringRef, 4> matches; |
| if (pos->regex.Execute(command, &matches)) { |
| std::string new_command(pos->command); |
| char percent_var[8]; |
| size_t idx, percent_var_idx; |
| for (uint32_t match_idx = 1; match_idx <= m_max_matches; ++match_idx) { |
| if (match_idx < matches.size()) { |
| const std::string match_str = matches[match_idx].str(); |
| const int percent_var_len = |
| ::snprintf(percent_var, sizeof(percent_var), "%%%u", match_idx); |
| for (idx = 0; (percent_var_idx = new_command.find( |
| percent_var, idx)) != std::string::npos;) { |
| new_command.erase(percent_var_idx, percent_var_len); |
| new_command.insert(percent_var_idx, match_str); |
| idx = percent_var_idx + match_str.size(); |
| } |
| } |
| } |
| // Interpret the new command and return this as the result! |
| if (m_interpreter.GetExpandRegexAliases()) |
| result.GetOutputStream().Printf("%s\n", new_command.c_str()); |
| // Pass in true for "no context switching". The command that called us |
| // should have set up the context appropriately, we shouldn't have to |
| // redo that. |
| return m_interpreter.HandleCommand(new_command.c_str(), |
| eLazyBoolCalculate, result); |
| } |
| } |
| result.SetStatus(eReturnStatusFailed); |
| if (!GetSyntax().empty()) |
| result.AppendError(GetSyntax()); |
| else |
| result.GetOutputStream() << "Command contents '" << command |
| << "' failed to match any " |
| "regular expression in the '" |
| << m_cmd_name << "' regex "; |
| return false; |
| } |
| |
| bool CommandObjectRegexCommand::AddRegexCommand(llvm::StringRef re_cstr, |
| llvm::StringRef command_cstr) { |
| m_entries.resize(m_entries.size() + 1); |
| // Only add the regular expression if it compiles |
| m_entries.back().regex = RegularExpression(re_cstr); |
| if (m_entries.back().regex.IsValid()) { |
| m_entries.back().command = command_cstr.str(); |
| return true; |
| } |
| // The regex didn't compile... |
| m_entries.pop_back(); |
| return false; |
| } |
| |
| void CommandObjectRegexCommand::HandleCompletion(CompletionRequest &request) { |
| if (m_completion_type_mask) { |
| CommandCompletions::InvokeCommonCompletionCallbacks( |
| GetCommandInterpreter(), m_completion_type_mask, request, nullptr); |
| } |
| } |