| //===-- Args.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/lldb-python.h" |
| |
| // C Includes |
| #include <cstdlib> |
| // C++ Includes |
| // Other libraries and framework includes |
| // Project includes |
| #include "lldb/Interpreter/Args.h" |
| #include "lldb/Core/Stream.h" |
| #include "lldb/Core/StreamFile.h" |
| #include "lldb/Core/StreamString.h" |
| #include "lldb/DataFormatters/FormatManager.h" |
| #include "lldb/Interpreter/Options.h" |
| #include "lldb/Interpreter/CommandInterpreter.h" |
| #include "lldb/Interpreter/CommandReturnObject.h" |
| #include "lldb/Target/Process.h" |
| //#include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/StackFrame.h" |
| #include "lldb/Target/Target.h" |
| //#include "lldb/Target/Thread.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| //---------------------------------------------------------------------- |
| // Args constructor |
| //---------------------------------------------------------------------- |
| Args::Args (const char *command) : |
| m_args(), |
| m_argv(), |
| m_args_quote_char() |
| { |
| if (command) |
| SetCommandString (command); |
| } |
| |
| |
| Args::Args (const char *command, size_t len) : |
| m_args(), |
| m_argv(), |
| m_args_quote_char() |
| { |
| if (command && len) |
| SetCommandString (command, len); |
| } |
| |
| //---------------------------------------------------------------------- |
| // We have to be very careful on the copy constructor of this class |
| // to make sure we copy all of the string values, but we can't copy the |
| // rhs.m_argv into m_argv since it will point to the "const char *" c |
| // strings in rhs.m_args. We need to copy the string list and update our |
| // own m_argv appropriately. |
| //---------------------------------------------------------------------- |
| Args::Args (const Args &rhs) : |
| m_args (rhs.m_args), |
| m_argv (), |
| m_args_quote_char(rhs.m_args_quote_char) |
| { |
| UpdateArgvFromArgs(); |
| } |
| |
| //---------------------------------------------------------------------- |
| // We have to be very careful on the copy constructor of this class |
| // to make sure we copy all of the string values, but we can't copy the |
| // rhs.m_argv into m_argv since it will point to the "const char *" c |
| // strings in rhs.m_args. We need to copy the string list and update our |
| // own m_argv appropriately. |
| //---------------------------------------------------------------------- |
| const Args & |
| Args::operator= (const Args &rhs) |
| { |
| // Make sure we aren't assigning to self |
| if (this != &rhs) |
| { |
| m_args = rhs.m_args; |
| m_args_quote_char = rhs.m_args_quote_char; |
| UpdateArgvFromArgs(); |
| } |
| return *this; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| Args::~Args () |
| { |
| } |
| |
| void |
| Args::Dump (Stream *s) |
| { |
| const size_t argc = m_argv.size(); |
| for (size_t i=0; i<argc; ++i) |
| { |
| s->Indent(); |
| const char *arg_cstr = m_argv[i]; |
| if (arg_cstr) |
| s->Printf("argv[%zi]=\"%s\"\n", i, arg_cstr); |
| else |
| s->Printf("argv[%zi]=NULL\n", i); |
| } |
| s->EOL(); |
| } |
| |
| bool |
| Args::GetCommandString (std::string &command) const |
| { |
| command.clear(); |
| const size_t argc = GetArgumentCount(); |
| for (size_t i=0; i<argc; ++i) |
| { |
| if (i > 0) |
| command += ' '; |
| command += m_argv[i]; |
| } |
| return argc > 0; |
| } |
| |
| bool |
| Args::GetQuotedCommandString (std::string &command) const |
| { |
| command.clear (); |
| const size_t argc = GetArgumentCount(); |
| for (size_t i = 0; i < argc; ++i) |
| { |
| if (i > 0) |
| command.append (1, ' '); |
| char quote_char = GetArgumentQuoteCharAtIndex(i); |
| if (quote_char) |
| { |
| command.append (1, quote_char); |
| command.append (m_argv[i]); |
| command.append (1, quote_char); |
| } |
| else |
| command.append (m_argv[i]); |
| } |
| return argc > 0; |
| } |
| |
| void |
| Args::SetCommandString (const char *command, size_t len) |
| { |
| // Use std::string to make sure we get a NULL terminated string we can use |
| // as "command" could point to a string within a large string.... |
| std::string null_terminated_command(command, len); |
| SetCommandString(null_terminated_command.c_str()); |
| } |
| |
| void |
| Args::SetCommandString (const char *command) |
| { |
| m_args.clear(); |
| m_argv.clear(); |
| m_args_quote_char.clear(); |
| |
| if (command && command[0]) |
| { |
| static const char *k_space_separators = " \t"; |
| static const char *k_space_separators_with_slash_and_quotes = " \t \\'\""; |
| const char *arg_end = nullptr; |
| const char *arg_pos; |
| for (arg_pos = command; |
| arg_pos && arg_pos[0]; |
| arg_pos = arg_end) |
| { |
| // Skip any leading space separators |
| const char *arg_start = ::strspn (arg_pos, k_space_separators) + arg_pos; |
| |
| // If there were only space separators to the end of the line, then |
| // we're done. |
| if (*arg_start == '\0') |
| break; |
| |
| // Arguments can be split into multiple discontiguous pieces, |
| // for example: |
| // "Hello ""World" |
| // this would result in a single argument "Hello World" (without/ |
| // the quotes) since the quotes would be removed and there is |
| // not space between the strings. So we need to keep track of the |
| // current start of each argument piece in "arg_piece_start" |
| const char *arg_piece_start = arg_start; |
| arg_pos = arg_piece_start; |
| |
| std::string arg; |
| // Since we can have multiple quotes that form a single command |
| // in a command like: "Hello "world'!' (which will make a single |
| // argument "Hello world!") we remember the first quote character |
| // we encounter and use that for the quote character. |
| char first_quote_char = '\0'; |
| char quote_char = '\0'; |
| bool arg_complete = false; |
| |
| do |
| { |
| arg_end = ::strcspn (arg_pos, k_space_separators_with_slash_and_quotes) + arg_pos; |
| |
| switch (arg_end[0]) |
| { |
| default: |
| assert (!"Unhandled case statement, we must handle this..."); |
| break; |
| |
| case '\0': |
| // End of C string |
| if (arg_piece_start && arg_piece_start[0]) |
| arg.append (arg_piece_start); |
| arg_complete = true; |
| break; |
| |
| case '\\': |
| // Backslash character |
| switch (arg_end[1]) |
| { |
| case '\0': |
| arg.append (arg_piece_start); |
| ++arg_end; |
| arg_complete = true; |
| break; |
| |
| default: |
| if (quote_char == '\0') |
| { |
| arg.append (arg_piece_start, arg_end - arg_piece_start); |
| if (arg_end[1] != '\0') |
| { |
| arg.append (arg_end + 1, 1); |
| arg_pos = arg_end + 2; |
| arg_piece_start = arg_pos; |
| } |
| } |
| else |
| arg_pos = arg_end + 2; |
| break; |
| } |
| break; |
| |
| case '"': |
| case '\'': |
| case '`': |
| // Quote characters |
| if (quote_char) |
| { |
| // We found a quote character while inside a quoted |
| // character argument. If it matches our current quote |
| // character, this ends the effect of the quotes. If it |
| // doesn't we ignore it. |
| if (quote_char == arg_end[0]) |
| { |
| arg.append (arg_piece_start, arg_end - arg_piece_start); |
| // Clear the quote character and let parsing |
| // continue (we need to watch for things like: |
| // "Hello ""World" |
| // "Hello "World |
| // "Hello "'World' |
| // All of which will result in a single argument "Hello World" |
| quote_char = '\0'; // Note that we are no longer inside quotes |
| arg_pos = arg_end + 1; // Skip the quote character |
| arg_piece_start = arg_pos; // Note we are starting from later in the string |
| } |
| else |
| { |
| // different quote, skip it and keep going |
| arg_pos = arg_end + 1; |
| } |
| } |
| else |
| { |
| // We found the start of a quote scope. |
| // Make sure there isn't a string that precedes |
| // the start of a quote scope like: |
| // Hello" World" |
| // If so, then add the "Hello" to the arg |
| if (arg_end > arg_piece_start) |
| arg.append (arg_piece_start, arg_end - arg_piece_start); |
| |
| // Enter into a quote scope |
| quote_char = arg_end[0]; |
| |
| if (first_quote_char == '\0') |
| first_quote_char = quote_char; |
| |
| arg_pos = arg_end; |
| ++arg_pos; // Skip the quote character |
| arg_piece_start = arg_pos; // Note we are starting from later in the string |
| |
| // Skip till the next quote character |
| const char *end_quote = ::strchr (arg_piece_start, quote_char); |
| while (end_quote && end_quote[-1] == '\\') |
| { |
| // Don't skip the quote character if it is |
| // preceded by a '\' character |
| end_quote = ::strchr (end_quote + 1, quote_char); |
| } |
| |
| if (end_quote) |
| { |
| if (end_quote > arg_piece_start) |
| arg.append (arg_piece_start, end_quote - arg_piece_start); |
| |
| // If the next character is a space or the end of |
| // string, this argument is complete... |
| if (end_quote[1] == ' ' || end_quote[1] == '\t' || end_quote[1] == '\0') |
| { |
| arg_complete = true; |
| arg_end = end_quote + 1; |
| } |
| else |
| { |
| arg_pos = end_quote + 1; |
| arg_piece_start = arg_pos; |
| } |
| quote_char = '\0'; |
| } |
| else |
| { |
| // Consume the rest of the string as there was no terminating quote |
| arg.append(arg_piece_start); |
| arg_end = arg_piece_start + strlen(arg_piece_start); |
| arg_complete = true; |
| } |
| } |
| break; |
| |
| case ' ': |
| case '\t': |
| if (quote_char) |
| { |
| // We are currently processing a quoted character and found |
| // a space character, skip any spaces and keep trying to find |
| // the end of the argument. |
| arg_pos = ::strspn (arg_end, k_space_separators) + arg_end; |
| } |
| else |
| { |
| // We are not inside any quotes, we just found a space after an |
| // argument |
| if (arg_end > arg_piece_start) |
| arg.append (arg_piece_start, arg_end - arg_piece_start); |
| arg_complete = true; |
| } |
| break; |
| } |
| } while (!arg_complete); |
| |
| m_args.push_back(arg); |
| m_args_quote_char.push_back (first_quote_char); |
| } |
| UpdateArgvFromArgs(); |
| } |
| } |
| |
| void |
| Args::UpdateArgsAfterOptionParsing() |
| { |
| // Now m_argv might be out of date with m_args, so we need to fix that |
| arg_cstr_collection::const_iterator argv_pos, argv_end = m_argv.end(); |
| arg_sstr_collection::iterator args_pos; |
| arg_quote_char_collection::iterator quotes_pos; |
| |
| for (argv_pos = m_argv.begin(), args_pos = m_args.begin(), quotes_pos = m_args_quote_char.begin(); |
| argv_pos != argv_end && args_pos != m_args.end(); |
| ++argv_pos) |
| { |
| const char *argv_cstr = *argv_pos; |
| if (argv_cstr == nullptr) |
| break; |
| |
| while (args_pos != m_args.end()) |
| { |
| const char *args_cstr = args_pos->c_str(); |
| if (args_cstr == argv_cstr) |
| { |
| // We found the argument that matches the C string in the |
| // vector, so we can now look for the next one |
| ++args_pos; |
| ++quotes_pos; |
| break; |
| } |
| else |
| { |
| quotes_pos = m_args_quote_char.erase (quotes_pos); |
| args_pos = m_args.erase (args_pos); |
| } |
| } |
| } |
| |
| if (args_pos != m_args.end()) |
| m_args.erase (args_pos, m_args.end()); |
| |
| if (quotes_pos != m_args_quote_char.end()) |
| m_args_quote_char.erase (quotes_pos, m_args_quote_char.end()); |
| } |
| |
| void |
| Args::UpdateArgvFromArgs() |
| { |
| m_argv.clear(); |
| arg_sstr_collection::const_iterator pos, end = m_args.end(); |
| for (pos = m_args.begin(); pos != end; ++pos) |
| m_argv.push_back(pos->c_str()); |
| m_argv.push_back(nullptr); |
| // Make sure we have enough arg quote chars in the array |
| if (m_args_quote_char.size() < m_args.size()) |
| m_args_quote_char.resize (m_argv.size()); |
| } |
| |
| size_t |
| Args::GetArgumentCount() const |
| { |
| if (m_argv.empty()) |
| return 0; |
| return m_argv.size() - 1; |
| } |
| |
| const char * |
| Args::GetArgumentAtIndex (size_t idx) const |
| { |
| if (idx < m_argv.size()) |
| return m_argv[idx]; |
| return nullptr; |
| } |
| |
| char |
| Args::GetArgumentQuoteCharAtIndex (size_t idx) const |
| { |
| if (idx < m_args_quote_char.size()) |
| return m_args_quote_char[idx]; |
| return '\0'; |
| } |
| |
| char ** |
| Args::GetArgumentVector() |
| { |
| if (!m_argv.empty()) |
| return (char **)&m_argv[0]; |
| return nullptr; |
| } |
| |
| const char ** |
| Args::GetConstArgumentVector() const |
| { |
| if (!m_argv.empty()) |
| return (const char **)&m_argv[0]; |
| return nullptr; |
| } |
| |
| void |
| Args::Shift () |
| { |
| // Don't pop the last NULL terminator from the argv array |
| if (m_argv.size() > 1) |
| { |
| m_argv.erase(m_argv.begin()); |
| m_args.pop_front(); |
| if (!m_args_quote_char.empty()) |
| m_args_quote_char.erase(m_args_quote_char.begin()); |
| } |
| } |
| |
| const char * |
| Args::Unshift (const char *arg_cstr, char quote_char) |
| { |
| m_args.push_front(arg_cstr); |
| m_argv.insert(m_argv.begin(), m_args.front().c_str()); |
| m_args_quote_char.insert(m_args_quote_char.begin(), quote_char); |
| return GetArgumentAtIndex (0); |
| } |
| |
| void |
| Args::AppendArguments (const Args &rhs) |
| { |
| const size_t rhs_argc = rhs.GetArgumentCount(); |
| for (size_t i=0; i<rhs_argc; ++i) |
| AppendArgument(rhs.GetArgumentAtIndex(i)); |
| } |
| |
| void |
| Args::AppendArguments (const char **argv) |
| { |
| if (argv) |
| { |
| for (uint32_t i=0; argv[i]; ++i) |
| AppendArgument(argv[i]); |
| } |
| } |
| |
| const char * |
| Args::AppendArgument (const char *arg_cstr, char quote_char) |
| { |
| return InsertArgumentAtIndex (GetArgumentCount(), arg_cstr, quote_char); |
| } |
| |
| const char * |
| Args::InsertArgumentAtIndex (size_t idx, const char *arg_cstr, char quote_char) |
| { |
| // Since we are using a std::list to hold onto the copied C string and |
| // we don't have direct access to the elements, we have to iterate to |
| // find the value. |
| arg_sstr_collection::iterator pos, end = m_args.end(); |
| size_t i = idx; |
| for (pos = m_args.begin(); i > 0 && pos != end; ++pos) |
| --i; |
| |
| pos = m_args.insert(pos, arg_cstr); |
| |
| if (idx >= m_args_quote_char.size()) |
| { |
| m_args_quote_char.resize(idx + 1); |
| m_args_quote_char[idx] = quote_char; |
| } |
| else |
| m_args_quote_char.insert(m_args_quote_char.begin() + idx, quote_char); |
| |
| UpdateArgvFromArgs(); |
| return GetArgumentAtIndex(idx); |
| } |
| |
| const char * |
| Args::ReplaceArgumentAtIndex (size_t idx, const char *arg_cstr, char quote_char) |
| { |
| // Since we are using a std::list to hold onto the copied C string and |
| // we don't have direct access to the elements, we have to iterate to |
| // find the value. |
| arg_sstr_collection::iterator pos, end = m_args.end(); |
| size_t i = idx; |
| for (pos = m_args.begin(); i > 0 && pos != end; ++pos) |
| --i; |
| |
| if (pos != end) |
| { |
| pos->assign(arg_cstr); |
| assert(idx < m_argv.size() - 1); |
| m_argv[idx] = pos->c_str(); |
| if (idx >= m_args_quote_char.size()) |
| m_args_quote_char.resize(idx + 1); |
| m_args_quote_char[idx] = quote_char; |
| return GetArgumentAtIndex(idx); |
| } |
| return nullptr; |
| } |
| |
| void |
| Args::DeleteArgumentAtIndex (size_t idx) |
| { |
| // Since we are using a std::list to hold onto the copied C string and |
| // we don't have direct access to the elements, we have to iterate to |
| // find the value. |
| arg_sstr_collection::iterator pos, end = m_args.end(); |
| size_t i = idx; |
| for (pos = m_args.begin(); i > 0 && pos != end; ++pos) |
| --i; |
| |
| if (pos != end) |
| { |
| m_args.erase (pos); |
| assert(idx < m_argv.size() - 1); |
| m_argv.erase(m_argv.begin() + idx); |
| if (idx < m_args_quote_char.size()) |
| m_args_quote_char.erase(m_args_quote_char.begin() + idx); |
| } |
| } |
| |
| void |
| Args::SetArguments (size_t argc, const char **argv) |
| { |
| // m_argv will be rebuilt in UpdateArgvFromArgs() below, so there is |
| // no need to clear it here. |
| m_args.clear(); |
| m_args_quote_char.clear(); |
| |
| // First copy each string |
| for (size_t i=0; i<argc; ++i) |
| { |
| m_args.push_back (argv[i]); |
| if ((argv[i][0] == '\'') || (argv[i][0] == '"') || (argv[i][0] == '`')) |
| m_args_quote_char.push_back (argv[i][0]); |
| else |
| m_args_quote_char.push_back ('\0'); |
| } |
| |
| UpdateArgvFromArgs(); |
| } |
| |
| void |
| Args::SetArguments (const char **argv) |
| { |
| // m_argv will be rebuilt in UpdateArgvFromArgs() below, so there is |
| // no need to clear it here. |
| m_args.clear(); |
| m_args_quote_char.clear(); |
| |
| if (argv) |
| { |
| // First copy each string |
| for (size_t i=0; argv[i]; ++i) |
| { |
| m_args.push_back (argv[i]); |
| if ((argv[i][0] == '\'') || (argv[i][0] == '"') || (argv[i][0] == '`')) |
| m_args_quote_char.push_back (argv[i][0]); |
| else |
| m_args_quote_char.push_back ('\0'); |
| } |
| } |
| |
| 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; |
| } |
| } |
| } |
| } |
| OptionParser::Prepare(); |
| 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) |
| { |
| 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(); |
| } |
| |
| int32_t |
| Args::StringToSInt32 (const char *s, int32_t fail_value, int base, bool *success_ptr) |
| { |
| if (s && s[0]) |
| { |
| char *end = nullptr; |
| const long sval = ::strtol (s, &end, base); |
| if (*end == '\0') |
| { |
| if (success_ptr) |
| *success_ptr = ((sval <= INT32_MAX) && (sval >= INT32_MIN)); |
| return (int32_t)sval; // All characters were used, return the result |
| } |
| } |
| if (success_ptr) *success_ptr = false; |
| return fail_value; |
| } |
| |
| uint32_t |
| Args::StringToUInt32 (const char *s, uint32_t fail_value, int base, bool *success_ptr) |
| { |
| if (s && s[0]) |
| { |
| char *end = nullptr; |
| const unsigned long uval = ::strtoul (s, &end, base); |
| if (*end == '\0') |
| { |
| if (success_ptr) |
| *success_ptr = (uval <= UINT32_MAX); |
| return (uint32_t)uval; // All characters were used, return the result |
| } |
| } |
| if (success_ptr) *success_ptr = false; |
| return fail_value; |
| } |
| |
| |
| int64_t |
| Args::StringToSInt64 (const char *s, int64_t fail_value, int base, bool *success_ptr) |
| { |
| if (s && s[0]) |
| { |
| char *end = nullptr; |
| int64_t uval = ::strtoll (s, &end, base); |
| if (*end == '\0') |
| { |
| if (success_ptr) *success_ptr = true; |
| return uval; // All characters were used, return the result |
| } |
| } |
| if (success_ptr) *success_ptr = false; |
| return fail_value; |
| } |
| |
| uint64_t |
| Args::StringToUInt64 (const char *s, uint64_t fail_value, int base, bool *success_ptr) |
| { |
| if (s && s[0]) |
| { |
| char *end = nullptr; |
| uint64_t uval = ::strtoull (s, &end, base); |
| if (*end == '\0') |
| { |
| if (success_ptr) *success_ptr = true; |
| return uval; // All characters were used, return the result |
| } |
| } |
| if (success_ptr) *success_ptr = false; |
| return fail_value; |
| } |
| |
| 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) |
| { |
| // Get the address to watch. |
| 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 compliler 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 = Args::StringToUInt64(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) |
| { |
| if (s && s[0]) |
| { |
| if (::strcasecmp (s, "false") == 0 || |
| ::strcasecmp (s, "off") == 0 || |
| ::strcasecmp (s, "no") == 0 || |
| ::strcmp (s, "0") == 0) |
| { |
| if (success_ptr) |
| *success_ptr = true; |
| return false; |
| } |
| else |
| if (::strcasecmp (s, "true") == 0 || |
| ::strcasecmp (s, "on") == 0 || |
| ::strcasecmp (s, "yes") == 0 || |
| ::strcmp (s, "1") == 0) |
| { |
| if (success_ptr) *success_ptr = true; |
| return true; |
| } |
| } |
| if (success_ptr) *success_ptr = false; |
| return fail_value; |
| } |
| |
| 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; |
| char *cptr = (char *) 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; |
| } |
| } |
| } |
| |
| OptionParser::Prepare(); |
| 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; |
| } |
| } |
| } |
| |
| OptionParser::Prepare(); |
| 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, |
| (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. |
| |
| if ((static_cast<int32_t>(dash_dash_pos) == -1 || cursor_index < dash_dash_pos) |
| && 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; |
| } |
| } |
| } |
| } |
| } |
| |
