1704 lines
55 KiB
C++
1704 lines
55 KiB
C++
//===-- Args.cpp ------------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// C Includes
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#include <cstdlib>
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Interpreter/Args.h"
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#include "lldb/Core/Stream.h"
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#include "lldb/Core/StreamFile.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/DataFormatters/FormatManager.h"
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#include "lldb/Host/StringConvert.h"
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#include "lldb/Interpreter/Options.h"
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#include "lldb/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/StackFrame.h"
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#include "lldb/Target/Target.h"
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// Args constructor
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//----------------------------------------------------------------------
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Args::Args (llvm::StringRef command) :
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m_args(),
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m_argv(),
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m_args_quote_char()
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{
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SetCommandString (command);
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}
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//----------------------------------------------------------------------
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// We have to be very careful on the copy constructor of this class
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// to make sure we copy all of the string values, but we can't copy the
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// rhs.m_argv into m_argv since it will point to the "const char *" c
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// strings in rhs.m_args. We need to copy the string list and update our
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// own m_argv appropriately.
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//----------------------------------------------------------------------
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Args::Args (const Args &rhs) :
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m_args (rhs.m_args),
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m_argv (),
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m_args_quote_char(rhs.m_args_quote_char)
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{
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UpdateArgvFromArgs();
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}
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//----------------------------------------------------------------------
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// We have to be very careful on the copy constructor of this class
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// to make sure we copy all of the string values, but we can't copy the
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// rhs.m_argv into m_argv since it will point to the "const char *" c
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// strings in rhs.m_args. We need to copy the string list and update our
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// own m_argv appropriately.
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//----------------------------------------------------------------------
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const Args &
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Args::operator= (const Args &rhs)
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{
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// Make sure we aren't assigning to self
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if (this != &rhs)
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{
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m_args = rhs.m_args;
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m_args_quote_char = rhs.m_args_quote_char;
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UpdateArgvFromArgs();
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}
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return *this;
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}
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//----------------------------------------------------------------------
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// Destructor
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//----------------------------------------------------------------------
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Args::~Args ()
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{
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}
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void
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Args::Dump (Stream *s)
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{
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const size_t argc = m_argv.size();
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for (size_t i=0; i<argc; ++i)
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{
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s->Indent();
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const char *arg_cstr = m_argv[i];
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if (arg_cstr)
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s->Printf("argv[%zi]=\"%s\"\n", i, arg_cstr);
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else
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s->Printf("argv[%zi]=NULL\n", i);
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}
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s->EOL();
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}
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bool
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Args::GetCommandString (std::string &command) const
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{
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command.clear();
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const size_t argc = GetArgumentCount();
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for (size_t i=0; i<argc; ++i)
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{
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if (i > 0)
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command += ' ';
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command += m_argv[i];
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}
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return argc > 0;
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}
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bool
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Args::GetQuotedCommandString (std::string &command) const
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{
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command.clear ();
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const size_t argc = GetArgumentCount();
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for (size_t i = 0; i < argc; ++i)
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{
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if (i > 0)
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command.append (1, ' ');
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char quote_char = GetArgumentQuoteCharAtIndex(i);
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if (quote_char)
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{
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command.append (1, quote_char);
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command.append (m_argv[i]);
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command.append (1, quote_char);
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}
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else
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command.append (m_argv[i]);
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}
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return argc > 0;
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}
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// A helper function for argument parsing.
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// Parses the initial part of the first argument using normal double quote rules:
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// backslash escapes the double quote and itself. The parsed string is appended to the second
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// argument. The function returns the unparsed portion of the string, starting at the closing
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// quote.
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static llvm::StringRef
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ParseDoubleQuotes(llvm::StringRef quoted, std::string &result)
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{
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// Inside double quotes, '\' and '"' are special.
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static const char *k_escapable_characters = "\"\\";
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while (true)
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{
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// Skip over over regular characters and append them.
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size_t regular = quoted.find_first_of(k_escapable_characters);
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result += quoted.substr(0, regular);
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quoted = quoted.substr(regular);
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// If we have reached the end of string or the closing quote, we're done.
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if (quoted.empty() || quoted.front() == '"')
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break;
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// We have found a backslash.
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quoted = quoted.drop_front();
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if (quoted.empty())
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{
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// A lone backslash at the end of string, let's just append it.
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result += '\\';
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break;
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}
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// If the character after the backslash is not a whitelisted escapable character, we
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// leave the character sequence untouched.
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if (strchr(k_escapable_characters, quoted.front()) == nullptr)
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result += '\\';
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result += quoted.front();
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quoted = quoted.drop_front();
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}
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return quoted;
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}
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// A helper function for SetCommandString.
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// Parses a single argument from the command string, processing quotes and backslashes in a
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// shell-like manner. The parsed argument is appended to the m_args array. The function returns
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// the unparsed portion of the string, starting at the first unqouted, unescaped whitespace
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// character.
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llvm::StringRef
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Args::ParseSingleArgument(llvm::StringRef command)
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{
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// Argument can be split into multiple discontiguous pieces,
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// for example:
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// "Hello ""World"
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// this would result in a single argument "Hello World" (without/
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// the quotes) since the quotes would be removed and there is
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// not space between the strings.
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std::string arg;
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// Since we can have multiple quotes that form a single command
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// in a command like: "Hello "world'!' (which will make a single
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// argument "Hello world!") we remember the first quote character
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// we encounter and use that for the quote character.
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char first_quote_char = '\0';
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bool arg_complete = false;
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do
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{
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// Skip over over regular characters and append them.
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size_t regular = command.find_first_of(" \t\"'`\\");
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arg += command.substr(0, regular);
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command = command.substr(regular);
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if (command.empty())
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break;
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char special = command.front();
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command = command.drop_front();
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switch (special)
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{
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case '\\':
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if (command.empty())
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{
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arg += '\\';
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break;
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}
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// If the character after the backslash is not a whitelisted escapable character, we
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// leave the character sequence untouched.
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if (strchr(" \t\\'\"`", command.front()) == nullptr)
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arg += '\\';
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arg += command.front();
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command = command.drop_front();
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break;
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case ' ':
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case '\t':
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// We are not inside any quotes, we just found a space after an
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// argument. We are done.
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arg_complete = true;
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break;
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case '"':
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case '\'':
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case '`':
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// We found the start of a quote scope.
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if (first_quote_char == '\0')
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first_quote_char = special;
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if (special == '"')
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command = ParseDoubleQuotes(command, arg);
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else
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{
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// For single quotes, we simply skip ahead to the matching quote character
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// (or the end of the string).
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size_t quoted = command.find(special);
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arg += command.substr(0, quoted);
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command = command.substr(quoted);
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}
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// If we found a closing quote, skip it.
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if (! command.empty())
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command = command.drop_front();
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break;
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}
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} while (!arg_complete);
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m_args.push_back(arg);
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m_args_quote_char.push_back (first_quote_char);
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return command;
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}
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void
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Args::SetCommandString (llvm::StringRef command)
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{
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m_args.clear();
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m_argv.clear();
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m_args_quote_char.clear();
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static const char *k_space_separators = " \t";
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command = command.ltrim(k_space_separators);
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while (!command.empty())
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{
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command = ParseSingleArgument(command);
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command = command.ltrim(k_space_separators);
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}
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UpdateArgvFromArgs();
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}
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void
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Args::UpdateArgsAfterOptionParsing()
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{
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// Now m_argv might be out of date with m_args, so we need to fix that
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arg_cstr_collection::const_iterator argv_pos, argv_end = m_argv.end();
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arg_sstr_collection::iterator args_pos;
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arg_quote_char_collection::iterator quotes_pos;
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for (argv_pos = m_argv.begin(), args_pos = m_args.begin(), quotes_pos = m_args_quote_char.begin();
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argv_pos != argv_end && args_pos != m_args.end();
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++argv_pos)
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{
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const char *argv_cstr = *argv_pos;
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if (argv_cstr == nullptr)
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break;
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while (args_pos != m_args.end())
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{
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const char *args_cstr = args_pos->c_str();
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if (args_cstr == argv_cstr)
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{
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// We found the argument that matches the C string in the
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// vector, so we can now look for the next one
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++args_pos;
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++quotes_pos;
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break;
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}
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else
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{
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quotes_pos = m_args_quote_char.erase (quotes_pos);
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args_pos = m_args.erase (args_pos);
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}
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}
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}
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if (args_pos != m_args.end())
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m_args.erase (args_pos, m_args.end());
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if (quotes_pos != m_args_quote_char.end())
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m_args_quote_char.erase (quotes_pos, m_args_quote_char.end());
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}
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void
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Args::UpdateArgvFromArgs()
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{
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m_argv.clear();
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arg_sstr_collection::const_iterator pos, end = m_args.end();
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for (pos = m_args.begin(); pos != end; ++pos)
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m_argv.push_back(pos->c_str());
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m_argv.push_back(nullptr);
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// Make sure we have enough arg quote chars in the array
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if (m_args_quote_char.size() < m_args.size())
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m_args_quote_char.resize (m_argv.size());
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}
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size_t
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Args::GetArgumentCount() const
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{
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if (m_argv.empty())
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return 0;
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return m_argv.size() - 1;
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}
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const char *
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Args::GetArgumentAtIndex (size_t idx) const
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{
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if (idx < m_argv.size())
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return m_argv[idx];
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return nullptr;
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}
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char
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Args::GetArgumentQuoteCharAtIndex (size_t idx) const
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{
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if (idx < m_args_quote_char.size())
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return m_args_quote_char[idx];
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return '\0';
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}
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char **
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Args::GetArgumentVector()
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{
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if (!m_argv.empty())
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return const_cast<char **>(&m_argv[0]);
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return nullptr;
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}
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const char **
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Args::GetConstArgumentVector() const
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{
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if (!m_argv.empty())
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return const_cast<const char **>(&m_argv[0]);
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return nullptr;
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}
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void
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Args::Shift ()
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{
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// Don't pop the last NULL terminator from the argv array
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if (m_argv.size() > 1)
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{
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m_argv.erase(m_argv.begin());
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m_args.pop_front();
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if (!m_args_quote_char.empty())
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m_args_quote_char.erase(m_args_quote_char.begin());
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}
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}
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const char *
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Args::Unshift (const char *arg_cstr, char quote_char)
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{
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m_args.push_front(arg_cstr);
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m_argv.insert(m_argv.begin(), m_args.front().c_str());
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m_args_quote_char.insert(m_args_quote_char.begin(), quote_char);
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return GetArgumentAtIndex (0);
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}
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void
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Args::AppendArguments (const Args &rhs)
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{
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const size_t rhs_argc = rhs.GetArgumentCount();
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for (size_t i=0; i<rhs_argc; ++i)
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AppendArgument(rhs.GetArgumentAtIndex(i),
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rhs.GetArgumentQuoteCharAtIndex(i));
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}
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void
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Args::AppendArguments (const char **argv)
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{
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if (argv)
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{
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for (uint32_t i=0; argv[i]; ++i)
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AppendArgument(argv[i]);
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}
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}
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const char *
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Args::AppendArgument (const char *arg_cstr, char quote_char)
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{
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return InsertArgumentAtIndex (GetArgumentCount(), arg_cstr, quote_char);
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}
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const char *
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Args::InsertArgumentAtIndex (size_t idx, const char *arg_cstr, char quote_char)
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{
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// Since we are using a std::list to hold onto the copied C string and
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// we don't have direct access to the elements, we have to iterate to
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// find the value.
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arg_sstr_collection::iterator pos, end = m_args.end();
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size_t i = idx;
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for (pos = m_args.begin(); i > 0 && pos != end; ++pos)
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--i;
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pos = m_args.insert(pos, arg_cstr);
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if (idx >= m_args_quote_char.size())
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{
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m_args_quote_char.resize(idx + 1);
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m_args_quote_char[idx] = quote_char;
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}
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else
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m_args_quote_char.insert(m_args_quote_char.begin() + idx, quote_char);
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UpdateArgvFromArgs();
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return GetArgumentAtIndex(idx);
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}
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const char *
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Args::ReplaceArgumentAtIndex (size_t idx, const char *arg_cstr, char quote_char)
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{
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// Since we are using a std::list to hold onto the copied C string and
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// we don't have direct access to the elements, we have to iterate to
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// find the value.
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arg_sstr_collection::iterator pos, end = m_args.end();
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size_t i = idx;
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for (pos = m_args.begin(); i > 0 && pos != end; ++pos)
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--i;
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if (pos != end)
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{
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pos->assign(arg_cstr);
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assert(idx < m_argv.size() - 1);
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m_argv[idx] = pos->c_str();
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if (idx >= m_args_quote_char.size())
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m_args_quote_char.resize(idx + 1);
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m_args_quote_char[idx] = quote_char;
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return GetArgumentAtIndex(idx);
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}
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return nullptr;
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}
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void
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Args::DeleteArgumentAtIndex (size_t idx)
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{
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// Since we are using a std::list to hold onto the copied C string and
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// we don't have direct access to the elements, we have to iterate to
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// find the value.
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arg_sstr_collection::iterator pos, end = m_args.end();
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size_t i = idx;
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for (pos = m_args.begin(); i > 0 && pos != end; ++pos)
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--i;
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if (pos != end)
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{
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m_args.erase (pos);
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assert(idx < m_argv.size() - 1);
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m_argv.erase(m_argv.begin() + idx);
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if (idx < m_args_quote_char.size())
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m_args_quote_char.erase(m_args_quote_char.begin() + idx);
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}
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}
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void
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Args::SetArguments (size_t argc, const char **argv)
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{
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// m_argv will be rebuilt in UpdateArgvFromArgs() below, so there is
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// no need to clear it here.
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m_args.clear();
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m_args_quote_char.clear();
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// First copy each string
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for (size_t i=0; i<argc; ++i)
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{
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m_args.push_back (argv[i]);
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if ((argv[i][0] == '\'') || (argv[i][0] == '"') || (argv[i][0] == '`'))
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m_args_quote_char.push_back (argv[i][0]);
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else
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m_args_quote_char.push_back ('\0');
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}
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UpdateArgvFromArgs();
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}
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void
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Args::SetArguments (const char **argv)
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{
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// m_argv will be rebuilt in UpdateArgvFromArgs() below, so there is
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// no need to clear it here.
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m_args.clear();
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m_args_quote_char.clear();
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if (argv)
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{
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// First copy each string
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for (size_t i=0; argv[i]; ++i)
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{
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m_args.push_back (argv[i]);
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if ((argv[i][0] == '\'') || (argv[i][0] == '"') || (argv[i][0] == '`'))
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m_args_quote_char.push_back (argv[i][0]);
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else
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m_args_quote_char.push_back ('\0');
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}
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}
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|
|
UpdateArgvFromArgs();
|
|
}
|
|
|
|
|
|
Error
|
|
Args::ParseOptions (Options &options)
|
|
{
|
|
StreamString sstr;
|
|
Error error;
|
|
Option *long_options = options.GetLongOptions();
|
|
if (long_options == nullptr)
|
|
{
|
|
error.SetErrorStringWithFormat("invalid long options");
|
|
return error;
|
|
}
|
|
|
|
for (int i=0; long_options[i].definition != nullptr; ++i)
|
|
{
|
|
if (long_options[i].flag == nullptr)
|
|
{
|
|
if (isprint8(long_options[i].val))
|
|
{
|
|
sstr << (char)long_options[i].val;
|
|
switch (long_options[i].definition->option_has_arg)
|
|
{
|
|
default:
|
|
case OptionParser::eNoArgument: break;
|
|
case OptionParser::eRequiredArgument: sstr << ':'; break;
|
|
case OptionParser::eOptionalArgument: sstr << "::"; break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Mutex::Locker options_locker(NULL);
|
|
OptionParser::Prepare(options_locker);
|
|
int val;
|
|
while (1)
|
|
{
|
|
int long_options_index = -1;
|
|
val = OptionParser::Parse(GetArgumentCount(),
|
|
GetArgumentVector(),
|
|
sstr.GetData(),
|
|
long_options,
|
|
&long_options_index);
|
|
if (val == -1)
|
|
break;
|
|
|
|
// Did we get an error?
|
|
if (val == '?')
|
|
{
|
|
error.SetErrorStringWithFormat("unknown or ambiguous option");
|
|
break;
|
|
}
|
|
// The option auto-set itself
|
|
if (val == 0)
|
|
continue;
|
|
|
|
((Options *) &options)->OptionSeen (val);
|
|
|
|
// Lookup the long option index
|
|
if (long_options_index == -1)
|
|
{
|
|
for (int i=0;
|
|
long_options[i].definition || long_options[i].flag || long_options[i].val;
|
|
++i)
|
|
{
|
|
if (long_options[i].val == val)
|
|
{
|
|
long_options_index = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
// Call the callback with the option
|
|
if (long_options_index >= 0 && long_options[long_options_index].definition)
|
|
{
|
|
const OptionDefinition *def = long_options[long_options_index].definition;
|
|
CommandInterpreter &interpreter = options.GetInterpreter();
|
|
OptionValidator *validator = def->validator;
|
|
if (validator && !validator->IsValid(*interpreter.GetPlatform(true), interpreter.GetExecutionContext()))
|
|
{
|
|
error.SetErrorStringWithFormat("Option \"%s\" invalid. %s", def->long_option, def->validator->LongConditionString());
|
|
}
|
|
else
|
|
{
|
|
error = options.SetOptionValue(long_options_index,
|
|
(def->option_has_arg == OptionParser::eNoArgument) ? nullptr : OptionParser::GetOptionArgument());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorStringWithFormat("invalid option with value '%i'", val);
|
|
}
|
|
if (error.Fail())
|
|
break;
|
|
}
|
|
|
|
// Update our ARGV now that get options has consumed all the options
|
|
m_argv.erase(m_argv.begin(), m_argv.begin() + OptionParser::GetOptionIndex());
|
|
UpdateArgsAfterOptionParsing ();
|
|
return error;
|
|
}
|
|
|
|
void
|
|
Args::Clear ()
|
|
{
|
|
m_args.clear ();
|
|
m_argv.clear ();
|
|
m_args_quote_char.clear();
|
|
}
|
|
|
|
lldb::addr_t
|
|
Args::StringToAddress (const ExecutionContext *exe_ctx, const char *s, lldb::addr_t fail_value, Error *error_ptr)
|
|
{
|
|
bool error_set = false;
|
|
if (s && s[0])
|
|
{
|
|
char *end = nullptr;
|
|
lldb::addr_t addr = ::strtoull (s, &end, 0);
|
|
if (*end == '\0')
|
|
{
|
|
if (error_ptr)
|
|
error_ptr->Clear();
|
|
return addr; // All characters were used, return the result
|
|
}
|
|
// Try base 16 with no prefix...
|
|
addr = ::strtoull (s, &end, 16);
|
|
if (*end == '\0')
|
|
{
|
|
if (error_ptr)
|
|
error_ptr->Clear();
|
|
return addr; // All characters were used, return the result
|
|
}
|
|
|
|
if (exe_ctx)
|
|
{
|
|
Target *target = exe_ctx->GetTargetPtr();
|
|
if (target)
|
|
{
|
|
lldb::ValueObjectSP valobj_sp;
|
|
EvaluateExpressionOptions options;
|
|
options.SetCoerceToId(false);
|
|
options.SetUnwindOnError(true);
|
|
options.SetKeepInMemory(false);
|
|
options.SetTryAllThreads(true);
|
|
|
|
ExpressionResults expr_result = target->EvaluateExpression(s,
|
|
exe_ctx->GetFramePtr(),
|
|
valobj_sp,
|
|
options);
|
|
|
|
bool success = false;
|
|
if (expr_result == eExpressionCompleted)
|
|
{
|
|
if (valobj_sp)
|
|
valobj_sp = valobj_sp->GetQualifiedRepresentationIfAvailable(valobj_sp->GetDynamicValueType(), true);
|
|
// Get the address to watch.
|
|
if (valobj_sp)
|
|
addr = valobj_sp->GetValueAsUnsigned(fail_value, &success);
|
|
if (success)
|
|
{
|
|
if (error_ptr)
|
|
error_ptr->Clear();
|
|
return addr;
|
|
}
|
|
else
|
|
{
|
|
if (error_ptr)
|
|
{
|
|
error_set = true;
|
|
error_ptr->SetErrorStringWithFormat("address expression \"%s\" resulted in a value whose type can't be converted to an address: %s", s, valobj_sp->GetTypeName().GetCString());
|
|
}
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
// Since the compiler can't handle things like "main + 12" we should
|
|
// try to do this for now. The compiler doesn't like adding offsets
|
|
// to function pointer types.
|
|
static RegularExpression g_symbol_plus_offset_regex("^(.*)([-\\+])[[:space:]]*(0x[0-9A-Fa-f]+|[0-9]+)[[:space:]]*$");
|
|
RegularExpression::Match regex_match(3);
|
|
if (g_symbol_plus_offset_regex.Execute(s, ®ex_match))
|
|
{
|
|
uint64_t offset = 0;
|
|
bool add = true;
|
|
std::string name;
|
|
std::string str;
|
|
if (regex_match.GetMatchAtIndex(s, 1, name))
|
|
{
|
|
if (regex_match.GetMatchAtIndex(s, 2, str))
|
|
{
|
|
add = str[0] == '+';
|
|
|
|
if (regex_match.GetMatchAtIndex(s, 3, str))
|
|
{
|
|
offset = StringConvert::ToUInt64(str.c_str(), 0, 0, &success);
|
|
|
|
if (success)
|
|
{
|
|
Error error;
|
|
addr = StringToAddress (exe_ctx, name.c_str(), LLDB_INVALID_ADDRESS, &error);
|
|
if (addr != LLDB_INVALID_ADDRESS)
|
|
{
|
|
if (add)
|
|
return addr + offset;
|
|
else
|
|
return addr - offset;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (error_ptr)
|
|
{
|
|
error_set = true;
|
|
error_ptr->SetErrorStringWithFormat("address expression \"%s\" evaluation failed", s);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (error_ptr)
|
|
{
|
|
if (!error_set)
|
|
error_ptr->SetErrorStringWithFormat("invalid address expression \"%s\"", s);
|
|
}
|
|
return fail_value;
|
|
}
|
|
|
|
const char *
|
|
Args::StripSpaces (std::string &s, bool leading, bool trailing, bool return_null_if_empty)
|
|
{
|
|
static const char *k_white_space = " \t\v";
|
|
if (!s.empty())
|
|
{
|
|
if (leading)
|
|
{
|
|
size_t pos = s.find_first_not_of (k_white_space);
|
|
if (pos == std::string::npos)
|
|
s.clear();
|
|
else if (pos > 0)
|
|
s.erase(0, pos);
|
|
}
|
|
|
|
if (trailing)
|
|
{
|
|
size_t rpos = s.find_last_not_of(k_white_space);
|
|
if (rpos != std::string::npos && rpos + 1 < s.size())
|
|
s.erase(rpos + 1);
|
|
}
|
|
}
|
|
if (return_null_if_empty && s.empty())
|
|
return nullptr;
|
|
return s.c_str();
|
|
}
|
|
|
|
bool
|
|
Args::StringToBoolean (const char *s, bool fail_value, bool *success_ptr)
|
|
{
|
|
llvm::StringRef ref = llvm::StringRef(s).trim();
|
|
if (ref.equals_lower("false") ||
|
|
ref.equals_lower("off") ||
|
|
ref.equals_lower("no") ||
|
|
ref.equals_lower("0"))
|
|
{
|
|
if (success_ptr)
|
|
*success_ptr = true;
|
|
return false;
|
|
}
|
|
else
|
|
if (ref.equals_lower("true") ||
|
|
ref.equals_lower("on") ||
|
|
ref.equals_lower("yes") ||
|
|
ref.equals_lower("1"))
|
|
{
|
|
if (success_ptr) *success_ptr = true;
|
|
return true;
|
|
}
|
|
if (success_ptr) *success_ptr = false;
|
|
return fail_value;
|
|
}
|
|
|
|
char
|
|
Args::StringToChar(const char *s, char fail_value, bool *success_ptr)
|
|
{
|
|
bool success = false;
|
|
char result = fail_value;
|
|
|
|
if (s)
|
|
{
|
|
size_t length = strlen(s);
|
|
if (length == 1)
|
|
{
|
|
success = true;
|
|
result = s[0];
|
|
}
|
|
}
|
|
if (success_ptr)
|
|
*success_ptr = success;
|
|
return result;
|
|
}
|
|
|
|
const char *
|
|
Args::StringToVersion (const char *s, uint32_t &major, uint32_t &minor, uint32_t &update)
|
|
{
|
|
major = UINT32_MAX;
|
|
minor = UINT32_MAX;
|
|
update = UINT32_MAX;
|
|
|
|
if (s && s[0])
|
|
{
|
|
char *pos = nullptr;
|
|
unsigned long uval32 = ::strtoul (s, &pos, 0);
|
|
if (pos == s)
|
|
return s;
|
|
major = uval32;
|
|
if (*pos == '\0')
|
|
{
|
|
return pos; // Decoded major and got end of string
|
|
}
|
|
else if (*pos == '.')
|
|
{
|
|
const char *minor_cstr = pos + 1;
|
|
uval32 = ::strtoul (minor_cstr, &pos, 0);
|
|
if (pos == minor_cstr)
|
|
return pos; // Didn't get any digits for the minor version...
|
|
minor = uval32;
|
|
if (*pos == '.')
|
|
{
|
|
const char *update_cstr = pos + 1;
|
|
uval32 = ::strtoul (update_cstr, &pos, 0);
|
|
if (pos == update_cstr)
|
|
return pos;
|
|
update = uval32;
|
|
}
|
|
return pos;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
const char *
|
|
Args::GetShellSafeArgument (const char *unsafe_arg, std::string &safe_arg)
|
|
{
|
|
safe_arg.assign (unsafe_arg);
|
|
size_t prev_pos = 0;
|
|
while (prev_pos < safe_arg.size())
|
|
{
|
|
// Escape spaces and quotes
|
|
size_t pos = safe_arg.find_first_of(" '\"", prev_pos);
|
|
if (pos != std::string::npos)
|
|
{
|
|
safe_arg.insert (pos, 1, '\\');
|
|
prev_pos = pos + 2;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
return safe_arg.c_str();
|
|
}
|
|
|
|
|
|
int64_t
|
|
Args::StringToOptionEnum (const char *s, OptionEnumValueElement *enum_values, int32_t fail_value, Error &error)
|
|
{
|
|
if (enum_values)
|
|
{
|
|
if (s && s[0])
|
|
{
|
|
for (int i = 0; enum_values[i].string_value != nullptr ; i++)
|
|
{
|
|
if (strstr(enum_values[i].string_value, s) == enum_values[i].string_value)
|
|
{
|
|
error.Clear();
|
|
return enum_values[i].value;
|
|
}
|
|
}
|
|
}
|
|
|
|
StreamString strm;
|
|
strm.PutCString ("invalid enumeration value, valid values are: ");
|
|
for (int i = 0; enum_values[i].string_value != nullptr; i++)
|
|
{
|
|
strm.Printf ("%s\"%s\"",
|
|
i > 0 ? ", " : "",
|
|
enum_values[i].string_value);
|
|
}
|
|
error.SetErrorString(strm.GetData());
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorString ("invalid enumeration argument");
|
|
}
|
|
return fail_value;
|
|
}
|
|
|
|
ScriptLanguage
|
|
Args::StringToScriptLanguage (const char *s, ScriptLanguage fail_value, bool *success_ptr)
|
|
{
|
|
if (s && s[0])
|
|
{
|
|
if ((::strcasecmp (s, "python") == 0) ||
|
|
(::strcasecmp (s, "default") == 0 && eScriptLanguagePython == eScriptLanguageDefault))
|
|
{
|
|
if (success_ptr) *success_ptr = true;
|
|
return eScriptLanguagePython;
|
|
}
|
|
if (::strcasecmp (s, "none"))
|
|
{
|
|
if (success_ptr) *success_ptr = true;
|
|
return eScriptLanguageNone;
|
|
}
|
|
}
|
|
if (success_ptr) *success_ptr = false;
|
|
return fail_value;
|
|
}
|
|
|
|
Error
|
|
Args::StringToFormat
|
|
(
|
|
const char *s,
|
|
lldb::Format &format,
|
|
size_t *byte_size_ptr
|
|
)
|
|
{
|
|
format = eFormatInvalid;
|
|
Error error;
|
|
|
|
if (s && s[0])
|
|
{
|
|
if (byte_size_ptr)
|
|
{
|
|
if (isdigit (s[0]))
|
|
{
|
|
char *format_char = nullptr;
|
|
unsigned long byte_size = ::strtoul (s, &format_char, 0);
|
|
if (byte_size != ULONG_MAX)
|
|
*byte_size_ptr = byte_size;
|
|
s = format_char;
|
|
}
|
|
else
|
|
*byte_size_ptr = 0;
|
|
}
|
|
|
|
const bool partial_match_ok = true;
|
|
if (!FormatManager::GetFormatFromCString (s, partial_match_ok, format))
|
|
{
|
|
StreamString error_strm;
|
|
error_strm.Printf ("Invalid format character or name '%s'. Valid values are:\n", s);
|
|
for (Format f = eFormatDefault; f < kNumFormats; f = Format(f+1))
|
|
{
|
|
char format_char = FormatManager::GetFormatAsFormatChar(f);
|
|
if (format_char)
|
|
error_strm.Printf ("'%c' or ", format_char);
|
|
|
|
error_strm.Printf ("\"%s\"", FormatManager::GetFormatAsCString(f));
|
|
error_strm.EOL();
|
|
}
|
|
|
|
if (byte_size_ptr)
|
|
error_strm.PutCString ("An optional byte size can precede the format character.\n");
|
|
error.SetErrorString(error_strm.GetString().c_str());
|
|
}
|
|
|
|
if (error.Fail())
|
|
return error;
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorStringWithFormat("%s option string", s ? "empty" : "invalid");
|
|
}
|
|
return error;
|
|
}
|
|
|
|
lldb::Encoding
|
|
Args::StringToEncoding (const char *s, lldb::Encoding fail_value)
|
|
{
|
|
if (s && s[0])
|
|
{
|
|
if (strcmp(s, "uint") == 0)
|
|
return eEncodingUint;
|
|
else if (strcmp(s, "sint") == 0)
|
|
return eEncodingSint;
|
|
else if (strcmp(s, "ieee754") == 0)
|
|
return eEncodingIEEE754;
|
|
else if (strcmp(s, "vector") == 0)
|
|
return eEncodingVector;
|
|
}
|
|
return fail_value;
|
|
}
|
|
|
|
uint32_t
|
|
Args::StringToGenericRegister (const char *s)
|
|
{
|
|
if (s && s[0])
|
|
{
|
|
if (strcmp(s, "pc") == 0)
|
|
return LLDB_REGNUM_GENERIC_PC;
|
|
else if (strcmp(s, "sp") == 0)
|
|
return LLDB_REGNUM_GENERIC_SP;
|
|
else if (strcmp(s, "fp") == 0)
|
|
return LLDB_REGNUM_GENERIC_FP;
|
|
else if (strcmp(s, "ra") == 0 || strcmp(s, "lr") == 0)
|
|
return LLDB_REGNUM_GENERIC_RA;
|
|
else if (strcmp(s, "flags") == 0)
|
|
return LLDB_REGNUM_GENERIC_FLAGS;
|
|
else if (strncmp(s, "arg", 3) == 0)
|
|
{
|
|
if (s[3] && s[4] == '\0')
|
|
{
|
|
switch (s[3])
|
|
{
|
|
case '1': return LLDB_REGNUM_GENERIC_ARG1;
|
|
case '2': return LLDB_REGNUM_GENERIC_ARG2;
|
|
case '3': return LLDB_REGNUM_GENERIC_ARG3;
|
|
case '4': return LLDB_REGNUM_GENERIC_ARG4;
|
|
case '5': return LLDB_REGNUM_GENERIC_ARG5;
|
|
case '6': return LLDB_REGNUM_GENERIC_ARG6;
|
|
case '7': return LLDB_REGNUM_GENERIC_ARG7;
|
|
case '8': return LLDB_REGNUM_GENERIC_ARG8;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return LLDB_INVALID_REGNUM;
|
|
}
|
|
|
|
|
|
void
|
|
Args::LongestCommonPrefix (std::string &common_prefix)
|
|
{
|
|
arg_sstr_collection::iterator pos, end = m_args.end();
|
|
pos = m_args.begin();
|
|
if (pos == end)
|
|
common_prefix.clear();
|
|
else
|
|
common_prefix = (*pos);
|
|
|
|
for (++pos; pos != end; ++pos)
|
|
{
|
|
size_t new_size = (*pos).size();
|
|
|
|
// First trim common_prefix if it is longer than the current element:
|
|
if (common_prefix.size() > new_size)
|
|
common_prefix.erase (new_size);
|
|
|
|
// Then trim it at the first disparity:
|
|
|
|
for (size_t i = 0; i < common_prefix.size(); i++)
|
|
{
|
|
if ((*pos)[i] != common_prefix[i])
|
|
{
|
|
common_prefix.erase(i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// If we've emptied the common prefix, we're done.
|
|
if (common_prefix.empty())
|
|
break;
|
|
}
|
|
}
|
|
|
|
size_t
|
|
Args::FindArgumentIndexForOption (Option *long_options, int long_options_index)
|
|
{
|
|
char short_buffer[3];
|
|
char long_buffer[255];
|
|
::snprintf (short_buffer, sizeof (short_buffer), "-%c", long_options[long_options_index].val);
|
|
::snprintf (long_buffer, sizeof (long_buffer), "--%s", long_options[long_options_index].definition->long_option);
|
|
size_t end = GetArgumentCount ();
|
|
size_t idx = 0;
|
|
while (idx < end)
|
|
{
|
|
if ((::strncmp (GetArgumentAtIndex (idx), short_buffer, strlen (short_buffer)) == 0)
|
|
|| (::strncmp (GetArgumentAtIndex (idx), long_buffer, strlen (long_buffer)) == 0))
|
|
{
|
|
return idx;
|
|
}
|
|
++idx;
|
|
}
|
|
|
|
return end;
|
|
}
|
|
|
|
bool
|
|
Args::IsPositionalArgument (const char *arg)
|
|
{
|
|
if (arg == nullptr)
|
|
return false;
|
|
|
|
bool is_positional = true;
|
|
const char *cptr = arg;
|
|
|
|
if (cptr[0] == '%')
|
|
{
|
|
++cptr;
|
|
while (isdigit (cptr[0]))
|
|
++cptr;
|
|
if (cptr[0] != '\0')
|
|
is_positional = false;
|
|
}
|
|
else
|
|
is_positional = false;
|
|
|
|
return is_positional;
|
|
}
|
|
|
|
void
|
|
Args::ParseAliasOptions (Options &options,
|
|
CommandReturnObject &result,
|
|
OptionArgVector *option_arg_vector,
|
|
std::string &raw_input_string)
|
|
{
|
|
StreamString sstr;
|
|
int i;
|
|
Option *long_options = options.GetLongOptions();
|
|
|
|
if (long_options == nullptr)
|
|
{
|
|
result.AppendError ("invalid long options");
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return;
|
|
}
|
|
|
|
for (i = 0; long_options[i].definition != nullptr; ++i)
|
|
{
|
|
if (long_options[i].flag == nullptr)
|
|
{
|
|
sstr << (char) long_options[i].val;
|
|
switch (long_options[i].definition->option_has_arg)
|
|
{
|
|
default:
|
|
case OptionParser::eNoArgument:
|
|
break;
|
|
case OptionParser::eRequiredArgument:
|
|
sstr << ":";
|
|
break;
|
|
case OptionParser::eOptionalArgument:
|
|
sstr << "::";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
Mutex::Locker options_locker(NULL);
|
|
OptionParser::Prepare(options_locker);
|
|
int val;
|
|
while (1)
|
|
{
|
|
int long_options_index = -1;
|
|
val = OptionParser::Parse (GetArgumentCount(),
|
|
GetArgumentVector(),
|
|
sstr.GetData(),
|
|
long_options,
|
|
&long_options_index);
|
|
|
|
if (val == -1)
|
|
break;
|
|
|
|
if (val == '?')
|
|
{
|
|
result.AppendError ("unknown or ambiguous option");
|
|
result.SetStatus (eReturnStatusFailed);
|
|
break;
|
|
}
|
|
|
|
if (val == 0)
|
|
continue;
|
|
|
|
options.OptionSeen (val);
|
|
|
|
// Look up the long option index
|
|
if (long_options_index == -1)
|
|
{
|
|
for (int j = 0;
|
|
long_options[j].definition || long_options[j].flag || long_options[j].val;
|
|
++j)
|
|
{
|
|
if (long_options[j].val == val)
|
|
{
|
|
long_options_index = j;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// See if the option takes an argument, and see if one was supplied.
|
|
if (long_options_index >= 0)
|
|
{
|
|
StreamString option_str;
|
|
option_str.Printf ("-%c", val);
|
|
const OptionDefinition *def = long_options[long_options_index].definition;
|
|
int has_arg = (def == nullptr) ? OptionParser::eNoArgument : def->option_has_arg;
|
|
|
|
switch (has_arg)
|
|
{
|
|
case OptionParser::eNoArgument:
|
|
option_arg_vector->push_back (OptionArgPair (std::string (option_str.GetData()),
|
|
OptionArgValue (OptionParser::eNoArgument, "<no-argument>")));
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
break;
|
|
case OptionParser::eRequiredArgument:
|
|
if (OptionParser::GetOptionArgument() != nullptr)
|
|
{
|
|
option_arg_vector->push_back (OptionArgPair (std::string (option_str.GetData()),
|
|
OptionArgValue (OptionParser::eRequiredArgument,
|
|
std::string (OptionParser::GetOptionArgument()))));
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
else
|
|
{
|
|
result.AppendErrorWithFormat ("Option '%s' is missing argument specifier.\n",
|
|
option_str.GetData());
|
|
result.SetStatus (eReturnStatusFailed);
|
|
}
|
|
break;
|
|
case OptionParser::eOptionalArgument:
|
|
if (OptionParser::GetOptionArgument() != nullptr)
|
|
{
|
|
option_arg_vector->push_back (OptionArgPair (std::string (option_str.GetData()),
|
|
OptionArgValue (OptionParser::eOptionalArgument,
|
|
std::string (OptionParser::GetOptionArgument()))));
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
else
|
|
{
|
|
option_arg_vector->push_back (OptionArgPair (std::string (option_str.GetData()),
|
|
OptionArgValue (OptionParser::eOptionalArgument, "<no-argument>")));
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
break;
|
|
default:
|
|
result.AppendErrorWithFormat ("error with options table; invalid value in has_arg field for option '%c'.\n", val);
|
|
result.SetStatus (eReturnStatusFailed);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result.AppendErrorWithFormat ("Invalid option with value '%c'.\n", val);
|
|
result.SetStatus (eReturnStatusFailed);
|
|
}
|
|
|
|
if (long_options_index >= 0)
|
|
{
|
|
// Find option in the argument list; also see if it was supposed to take an argument and if one was
|
|
// supplied. Remove option (and argument, if given) from the argument list. Also remove them from
|
|
// the raw_input_string, if one was passed in.
|
|
size_t idx = FindArgumentIndexForOption (long_options, long_options_index);
|
|
if (idx < GetArgumentCount())
|
|
{
|
|
if (raw_input_string.size() > 0)
|
|
{
|
|
const char *tmp_arg = GetArgumentAtIndex (idx);
|
|
size_t pos = raw_input_string.find (tmp_arg);
|
|
if (pos != std::string::npos)
|
|
raw_input_string.erase (pos, strlen (tmp_arg));
|
|
}
|
|
ReplaceArgumentAtIndex (idx, "");
|
|
if ((long_options[long_options_index].definition->option_has_arg != OptionParser::eNoArgument)
|
|
&& (OptionParser::GetOptionArgument() != nullptr)
|
|
&& (idx+1 < GetArgumentCount())
|
|
&& (strcmp (OptionParser::GetOptionArgument(), GetArgumentAtIndex(idx+1)) == 0))
|
|
{
|
|
if (raw_input_string.size() > 0)
|
|
{
|
|
const char *tmp_arg = GetArgumentAtIndex (idx+1);
|
|
size_t pos = raw_input_string.find (tmp_arg);
|
|
if (pos != std::string::npos)
|
|
raw_input_string.erase (pos, strlen (tmp_arg));
|
|
}
|
|
ReplaceArgumentAtIndex (idx+1, "");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!result.Succeeded())
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
Args::ParseArgsForCompletion
|
|
(
|
|
Options &options,
|
|
OptionElementVector &option_element_vector,
|
|
uint32_t cursor_index
|
|
)
|
|
{
|
|
StreamString sstr;
|
|
Option *long_options = options.GetLongOptions();
|
|
option_element_vector.clear();
|
|
|
|
if (long_options == nullptr)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// Leading : tells getopt to return a : for a missing option argument AND
|
|
// to suppress error messages.
|
|
|
|
sstr << ":";
|
|
for (int i = 0; long_options[i].definition != nullptr; ++i)
|
|
{
|
|
if (long_options[i].flag == nullptr)
|
|
{
|
|
sstr << (char) long_options[i].val;
|
|
switch (long_options[i].definition->option_has_arg)
|
|
{
|
|
default:
|
|
case OptionParser::eNoArgument:
|
|
break;
|
|
case OptionParser::eRequiredArgument:
|
|
sstr << ":";
|
|
break;
|
|
case OptionParser::eOptionalArgument:
|
|
sstr << "::";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
Mutex::Locker options_locker(NULL);
|
|
OptionParser::Prepare(options_locker);
|
|
OptionParser::EnableError(false);
|
|
|
|
int val;
|
|
const OptionDefinition *opt_defs = options.GetDefinitions();
|
|
|
|
// Fooey... OptionParser::Parse permutes the GetArgumentVector to move the options to the front.
|
|
// So we have to build another Arg and pass that to OptionParser::Parse so it doesn't
|
|
// change the one we have.
|
|
|
|
std::vector<const char *> dummy_vec (GetArgumentVector(), GetArgumentVector() + GetArgumentCount() + 1);
|
|
|
|
bool failed_once = false;
|
|
uint32_t dash_dash_pos = -1;
|
|
|
|
while (1)
|
|
{
|
|
bool missing_argument = false;
|
|
int long_options_index = -1;
|
|
|
|
val = OptionParser::Parse (dummy_vec.size() - 1,
|
|
const_cast<char *const *>(&dummy_vec.front()),
|
|
sstr.GetData(),
|
|
long_options,
|
|
&long_options_index);
|
|
|
|
if (val == -1)
|
|
{
|
|
// When we're completing a "--" which is the last option on line,
|
|
if (failed_once)
|
|
break;
|
|
|
|
failed_once = true;
|
|
|
|
// If this is a bare "--" we mark it as such so we can complete it successfully later.
|
|
// Handling the "--" is a little tricky, since that may mean end of options or arguments, or the
|
|
// user might want to complete options by long name. I make this work by checking whether the
|
|
// cursor is in the "--" argument, and if so I assume we're completing the long option, otherwise
|
|
// I let it pass to OptionParser::Parse which will terminate the option parsing.
|
|
// Note, in either case we continue parsing the line so we can figure out what other options
|
|
// were passed. This will be useful when we come to restricting completions based on what other
|
|
// options we've seen on the line.
|
|
|
|
if (static_cast<size_t>(OptionParser::GetOptionIndex()) < dummy_vec.size() - 1
|
|
&& (strcmp (dummy_vec[OptionParser::GetOptionIndex()-1], "--") == 0))
|
|
{
|
|
dash_dash_pos = OptionParser::GetOptionIndex() - 1;
|
|
if (static_cast<size_t>(OptionParser::GetOptionIndex() - 1) == cursor_index)
|
|
{
|
|
option_element_vector.push_back (OptionArgElement (OptionArgElement::eBareDoubleDash, OptionParser::GetOptionIndex() - 1,
|
|
OptionArgElement::eBareDoubleDash));
|
|
continue;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
else if (val == '?')
|
|
{
|
|
option_element_vector.push_back (OptionArgElement (OptionArgElement::eUnrecognizedArg, OptionParser::GetOptionIndex() - 1,
|
|
OptionArgElement::eUnrecognizedArg));
|
|
continue;
|
|
}
|
|
else if (val == 0)
|
|
{
|
|
continue;
|
|
}
|
|
else if (val == ':')
|
|
{
|
|
// This is a missing argument.
|
|
val = OptionParser::GetOptionErrorCause();
|
|
missing_argument = true;
|
|
}
|
|
|
|
((Options *) &options)->OptionSeen (val);
|
|
|
|
// Look up the long option index
|
|
if (long_options_index == -1)
|
|
{
|
|
for (int j = 0;
|
|
long_options[j].definition || long_options[j].flag || long_options[j].val;
|
|
++j)
|
|
{
|
|
if (long_options[j].val == val)
|
|
{
|
|
long_options_index = j;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// See if the option takes an argument, and see if one was supplied.
|
|
if (long_options_index >= 0)
|
|
{
|
|
int opt_defs_index = -1;
|
|
for (int i = 0; ; i++)
|
|
{
|
|
if (opt_defs[i].short_option == 0)
|
|
break;
|
|
else if (opt_defs[i].short_option == val)
|
|
{
|
|
opt_defs_index = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
const OptionDefinition *def = long_options[long_options_index].definition;
|
|
int has_arg = (def == nullptr) ? OptionParser::eNoArgument : def->option_has_arg;
|
|
switch (has_arg)
|
|
{
|
|
case OptionParser::eNoArgument:
|
|
option_element_vector.push_back (OptionArgElement (opt_defs_index, OptionParser::GetOptionIndex() - 1, 0));
|
|
break;
|
|
case OptionParser::eRequiredArgument:
|
|
if (OptionParser::GetOptionArgument() != nullptr)
|
|
{
|
|
int arg_index;
|
|
if (missing_argument)
|
|
arg_index = -1;
|
|
else
|
|
arg_index = OptionParser::GetOptionIndex() - 1;
|
|
|
|
option_element_vector.push_back (OptionArgElement (opt_defs_index, OptionParser::GetOptionIndex() - 2, arg_index));
|
|
}
|
|
else
|
|
{
|
|
option_element_vector.push_back (OptionArgElement (opt_defs_index, OptionParser::GetOptionIndex() - 1, -1));
|
|
}
|
|
break;
|
|
case OptionParser::eOptionalArgument:
|
|
if (OptionParser::GetOptionArgument() != nullptr)
|
|
{
|
|
option_element_vector.push_back (OptionArgElement (opt_defs_index, OptionParser::GetOptionIndex() - 2, OptionParser::GetOptionIndex() - 1));
|
|
}
|
|
else
|
|
{
|
|
option_element_vector.push_back (OptionArgElement (opt_defs_index, OptionParser::GetOptionIndex() - 2, OptionParser::GetOptionIndex() - 1));
|
|
}
|
|
break;
|
|
default:
|
|
// The options table is messed up. Here we'll just continue
|
|
option_element_vector.push_back (OptionArgElement (OptionArgElement::eUnrecognizedArg, OptionParser::GetOptionIndex() - 1,
|
|
OptionArgElement::eUnrecognizedArg));
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
option_element_vector.push_back (OptionArgElement (OptionArgElement::eUnrecognizedArg, OptionParser::GetOptionIndex() - 1,
|
|
OptionArgElement::eUnrecognizedArg));
|
|
}
|
|
}
|
|
|
|
// Finally we have to handle the case where the cursor index points at a single "-". We want to mark that in
|
|
// the option_element_vector, but only if it is not after the "--". But it turns out that OptionParser::Parse just ignores
|
|
// an isolated "-". So we have to look it up by hand here. We only care if it is AT the cursor position.
|
|
// Note, a single quoted dash is not the same as a single dash...
|
|
|
|
if ((static_cast<int32_t>(dash_dash_pos) == -1 || cursor_index < dash_dash_pos)
|
|
&& m_args_quote_char[cursor_index] == '\0'
|
|
&& strcmp (GetArgumentAtIndex(cursor_index), "-") == 0)
|
|
{
|
|
option_element_vector.push_back (OptionArgElement (OptionArgElement::eBareDash, cursor_index,
|
|
OptionArgElement::eBareDash));
|
|
|
|
}
|
|
}
|
|
|
|
void
|
|
Args::EncodeEscapeSequences (const char *src, std::string &dst)
|
|
{
|
|
dst.clear();
|
|
if (src)
|
|
{
|
|
for (const char *p = src; *p != '\0'; ++p)
|
|
{
|
|
size_t non_special_chars = ::strcspn (p, "\\");
|
|
if (non_special_chars > 0)
|
|
{
|
|
dst.append(p, non_special_chars);
|
|
p += non_special_chars;
|
|
if (*p == '\0')
|
|
break;
|
|
}
|
|
|
|
if (*p == '\\')
|
|
{
|
|
++p; // skip the slash
|
|
switch (*p)
|
|
{
|
|
case 'a' : dst.append(1, '\a'); break;
|
|
case 'b' : dst.append(1, '\b'); break;
|
|
case 'f' : dst.append(1, '\f'); break;
|
|
case 'n' : dst.append(1, '\n'); break;
|
|
case 'r' : dst.append(1, '\r'); break;
|
|
case 't' : dst.append(1, '\t'); break;
|
|
case 'v' : dst.append(1, '\v'); break;
|
|
case '\\': dst.append(1, '\\'); break;
|
|
case '\'': dst.append(1, '\''); break;
|
|
case '"' : dst.append(1, '"'); break;
|
|
case '0' :
|
|
// 1 to 3 octal chars
|
|
{
|
|
// Make a string that can hold onto the initial zero char,
|
|
// up to 3 octal digits, and a terminating NULL.
|
|
char oct_str[5] = { '\0', '\0', '\0', '\0', '\0' };
|
|
|
|
int i;
|
|
for (i=0; (p[i] >= '0' && p[i] <= '7') && i<4; ++i)
|
|
oct_str[i] = p[i];
|
|
|
|
// We don't want to consume the last octal character since
|
|
// the main for loop will do this for us, so we advance p by
|
|
// one less than i (even if i is zero)
|
|
p += i - 1;
|
|
unsigned long octal_value = ::strtoul (oct_str, nullptr, 8);
|
|
if (octal_value <= UINT8_MAX)
|
|
{
|
|
dst.append(1, (char)octal_value);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'x':
|
|
// hex number in the format
|
|
if (isxdigit(p[1]))
|
|
{
|
|
++p; // Skip the 'x'
|
|
|
|
// Make a string that can hold onto two hex chars plus a
|
|
// NULL terminator
|
|
char hex_str[3] = { *p, '\0', '\0' };
|
|
if (isxdigit(p[1]))
|
|
{
|
|
++p; // Skip the first of the two hex chars
|
|
hex_str[1] = *p;
|
|
}
|
|
|
|
unsigned long hex_value = strtoul (hex_str, nullptr, 16);
|
|
if (hex_value <= UINT8_MAX)
|
|
dst.append (1, (char)hex_value);
|
|
}
|
|
else
|
|
{
|
|
dst.append(1, 'x');
|
|
}
|
|
break;
|
|
|
|
default:
|
|
// Just desensitize any other character by just printing what
|
|
// came after the '\'
|
|
dst.append(1, *p);
|
|
break;
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
Args::ExpandEscapedCharacters (const char *src, std::string &dst)
|
|
{
|
|
dst.clear();
|
|
if (src)
|
|
{
|
|
for (const char *p = src; *p != '\0'; ++p)
|
|
{
|
|
if (isprint8(*p))
|
|
dst.append(1, *p);
|
|
else
|
|
{
|
|
switch (*p)
|
|
{
|
|
case '\a': dst.append("\\a"); break;
|
|
case '\b': dst.append("\\b"); break;
|
|
case '\f': dst.append("\\f"); break;
|
|
case '\n': dst.append("\\n"); break;
|
|
case '\r': dst.append("\\r"); break;
|
|
case '\t': dst.append("\\t"); break;
|
|
case '\v': dst.append("\\v"); break;
|
|
case '\'': dst.append("\\'"); break;
|
|
case '"': dst.append("\\\""); break;
|
|
case '\\': dst.append("\\\\"); break;
|
|
default:
|
|
{
|
|
// Just encode as octal
|
|
dst.append("\\0");
|
|
char octal_str[32];
|
|
snprintf(octal_str, sizeof(octal_str), "%o", *p);
|
|
dst.append(octal_str);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
std::string
|
|
Args::EscapeLLDBCommandArgument (const std::string& arg, char quote_char)
|
|
{
|
|
const char* chars_to_escape = nullptr;
|
|
switch (quote_char)
|
|
{
|
|
case '\0':
|
|
chars_to_escape = " \t\\'\"`";
|
|
break;
|
|
case '\'':
|
|
chars_to_escape = "";
|
|
break;
|
|
case '"':
|
|
chars_to_escape = "$\"`\\";
|
|
break;
|
|
default:
|
|
assert(false && "Unhandled quote character");
|
|
}
|
|
|
|
std::string res;
|
|
res.reserve(arg.size());
|
|
for (char c : arg)
|
|
{
|
|
if (::strchr(chars_to_escape, c))
|
|
res.push_back('\\');
|
|
res.push_back(c);
|
|
}
|
|
return res;
|
|
}
|
|
|