/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2010 Daniel Marjamäki and Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <iostream>
#include <sstream>
#include <fstream>
#include <string>
#include <cstring>
#include "cppcheck.h"
#include "timer.h"
#include "settings.h"
#include "cmdlineparser.h"
// xml is used in rules
#include "tinyxml/tinyxml.h"
static void AddFilesToList(const std::string& FileList, std::vector<std::string>& PathNames)
{
// to keep things initially simple, if the file can't be opened, just be
// silent and move on
// ideas : we could also require this should be an xml file, with the filenames
// specified in an xml structure
// we could elaborate this then, to also include the I-paths, ...
// basically for everything that makes the command line very long
// xml is a bonus then, since we can easily extend it
// we need a good parser then -> suggestion : TinyXml
// drawback : creates a dependency
std::ifstream Files(FileList.c_str());
if (Files)
{
std::string FileName;
while (std::getline(Files, FileName)) // next line
{
if (!FileName.empty())
{
PathNames.push_back(FileName);
}
}
}
}
CmdLineParser::CmdLineParser(Settings *settings)
: _settings(settings)
, _showHelp(false)
, _showVersion(false)
, _showErrorMessages(false)
{
}
void CmdLineParser::PrintMessage(const std::string &message)
{
std::cout << message << std::endl;
}
bool CmdLineParser::ParseFromArgs(int argc, const char* const argv[])
{
for (int i = 1; i < argc; i++)
{
if (strcmp(argv[i], "--version") == 0)
{
_showVersion = true;
return true;
}
// Flag used for various purposes during debugging
else if (strcmp(argv[i], "--debug") == 0)
_settings->debug = _settings->debugwarnings = true;
// Show debug warnings
else if (strcmp(argv[i], "--debug-warnings") == 0)
_settings->debugwarnings = true;
// Inconclusive checking - keep this for compatibility but don't
// handle it
else if (strcmp(argv[i], "-a") == 0 || strcmp(argv[i], "--all") == 0)
;
// Checking coding style
else if (strcmp(argv[i], "-s") == 0 || strcmp(argv[i], "--style") == 0)
{
const std::string errmsg = _settings->addEnabled("style");
if (!errmsg.empty())
{
PrintMessage(errmsg);
return false;
}
}
// Filter errors
else if (strcmp(argv[i], "--exitcode-suppressions") == 0)
{
++i;
if (i >= argc)
{
PrintMessage("cppcheck: No file specified for the --exitcode-suppressions option");
return false;
}
std::ifstream f(argv[i]);
if (!f.is_open())
{
PrintMessage("cppcheck: Couldn't open the file \"" + std::string(argv[i]) + "\"");
return false;
}
const std::string errmsg(_settings->nofail.parseFile(f));
if (!errmsg.empty())
{
PrintMessage(errmsg);
return false;
}
}
// Filter errors
else if (strcmp(argv[i], "--suppressions") == 0)
{
++i;
if (i >= argc)
{
PrintMessage("cppcheck: No file specified for the --suppressions option");
return false;
}
std::ifstream f(argv[i]);
if (!f.is_open())
{
std::string message("cppcheck: Couldn't open the file \"");
message += std::string(argv[i]);
message += "\"";
PrintMessage(message);
return false;
}
const std::string errmsg(_settings->nomsg.parseFile(f));
if (!errmsg.empty())
{
PrintMessage(errmsg);
return false;
}
}
// Enables inline suppressions.
else if (strcmp(argv[i], "--inline-suppr") == 0)
_settings->_inlineSuppressions = true;
// Verbose error messages (configuration info)
else if (strcmp(argv[i], "-v") == 0 || strcmp(argv[i], "--verbose") == 0)
_settings->_verbose = true;
// Force checking of files that have "too many" configurations
else if (strcmp(argv[i], "-f") == 0 || strcmp(argv[i], "--force") == 0)
_settings->_force = true;
// Write results in results.xml
else if (strcmp(argv[i], "--xml") == 0)
_settings->_xml = true;
#ifndef NDEBUG
// Experimental: Write results in xml2 format
else if (strcmp(argv[i], "--xml-version=2") == 0)
{
_settings->_xml = true;
_settings->_xml_version = 2;
}
#endif
// Only print something when there are errors
else if (strcmp(argv[i], "-q") == 0 || strcmp(argv[i], "--quiet") == 0)
_settings->_errorsOnly = true;
// Check if there are unused functions
else if (strcmp(argv[i], "--unused-functions") == 0)
{
const std::string errmsg = _settings->addEnabled("unusedFunctions");
if (!errmsg.empty())
{
PrintMessage(errmsg);
return false;
}
}
// Append userdefined code to checked source code
else if (strncmp(argv[i], "--append=", 9) == 0)
_settings->append(9 + argv[i]);
else if (strncmp(argv[i], "--enable=", 9) == 0)
{
const std::string errmsg = _settings->addEnabled(argv[i] + 9);
if (!errmsg.empty())
{
PrintMessage(errmsg);
return false;
}
}
// --error-exitcode=1
else if (strncmp(argv[i], "--error-exitcode=", 17) == 0)
{
std::string temp = argv[i];
temp = temp.substr(17);
std::istringstream iss(temp);
if (!(iss >> _settings->_exitCode))
{
_settings->_exitCode = 0;
PrintMessage("cppcheck: Argument must be an integer. Try something like '--error-exitcode=1'");
return false;
}
}
// User define
else if (strncmp(argv[i], "-D", 2) == 0)
{
if (!_settings->userDefines.empty())
_settings->userDefines += ";";
if (strcmp(argv[i], "-D") == 0)
_settings->userDefines += argv[++i];
else
_settings->userDefines += 2 + argv[i];
}
// Include paths
else if (strcmp(argv[i], "-I") == 0 || strncmp(argv[i], "-I", 2) == 0)
{
std::string path;
// "-I path/"
if (strcmp(argv[i], "-I") == 0)
{
++i;
if (i >= argc)
{
PrintMessage("cppcheck: argument to '-I' is missing");
return false;
}
path = argv[i];
}
// "-Ipath/"
else
{
path = argv[i];
path = path.substr(2);
}
// If path doesn't end with / or \, add it
if (path[path.length()-1] != '/' && path[path.length()-1] != '\\')
path += '/';
_settings->_includePaths.push_back(path);
}
// file list specified
else if (strncmp(argv[i], "--file-list=", 12) == 0)
{
// open this file and read every input file (1 file name per line)
AddFilesToList(12 + argv[i], _pathnames);
}
// Report progress
else if (strcmp(argv[i], "--report-progress") == 0)
{
_settings->reportProgress = true;
}
// Output formatter
else if (strcmp(argv[i], "--template") == 0)
{
// "--template path/"
++i;
if (i >= argc)
{
PrintMessage("cppcheck: argument to '--template' is missing");
return false;
}
_settings->_outputFormat = argv[i];
if (_settings->_outputFormat == "gcc")
_settings->_outputFormat = "{file}:{line}: {severity}: {message}";
else if (_settings->_outputFormat == "vs")
_settings->_outputFormat = "{file}({line}): {severity}: {message}";
}
// Checking threads
else if (strcmp(argv[i], "-j") == 0 ||
strncmp(argv[i], "-j", 2) == 0)
{
std::string numberString;
// "-j 3"
if (strcmp(argv[i], "-j") == 0)
{
++i;
if (i >= argc)
{
PrintMessage("cppcheck: argument to '-j' is missing");
return false;
}
numberString = argv[i];
}
// "-j3"
else if (strncmp(argv[i], "-j", 2) == 0)
{
numberString = argv[i];
numberString = numberString.substr(2);
}
std::istringstream iss(numberString);
if (!(iss >> _settings->_jobs))
{
PrintMessage("cppcheck: argument to '-j' is not a number");
return false;
}
if (_settings->_jobs > 10000)
{
// This limit is here just to catch typos. If someone has
// need for more jobs, this value should be increased.
PrintMessage("cppcheck: argument for '-j' is allowed to be 10000 at max");
return false;
}
}
// deprecated: auto deallocated classes..
else if (strcmp(argv[i], "--auto-dealloc") == 0)
{
++i;
}
// print all possible error messages..
else if (strcmp(argv[i], "--errorlist") == 0)
{
//_cppcheck->getErrorMessages();
_showErrorMessages = true;
_settings->_xml = true;
return true;
}
// documentation..
else if (strcmp(argv[i], "--doc") == 0)
{
std::ostringstream doc;
// Get documentation..
for (std::list<Check *>::iterator it = Check::instances().begin(); it != Check::instances().end(); ++it)
{
doc << "===" << (*it)->name() << "===\n"
<< (*it)->classInfo() << "\n\n";
}
std::string doc2(doc.str());
while (doc2.find("\n\n\n") != std::string::npos)
doc2.erase(doc2.find("\n\n\n"), 1);
std::cout << doc2;
return true;
}
// --test-2-pass Experimental 2-pass checking of files
// This command line flag will be removed
else if (strcmp(argv[i], "--test-2-pass") == 0)
{
_settings->test_2_pass = true;
}
// show timing information..
else if (strncmp(argv[i], "--showtime=", 11) == 0)
{
const std::string showtimeMode = argv[i] + 11;
if (showtimeMode == "file")
_settings->_showtime = SHOWTIME_FILE;
else if (showtimeMode == "summary")
_settings->_showtime = SHOWTIME_SUMMARY;
else if (showtimeMode == "top5")
_settings->_showtime = SHOWTIME_TOP5;
else
_settings->_showtime = SHOWTIME_NONE;
}
// Rules are a debug feature
#ifndef NDEBUG
// Rule given at command line
else if (strncmp(argv[i], "--rule=", 7) == 0)
{
Settings::Rule rule;
rule.pattern = 7 + argv[i];
_settings->rules.push_back(rule);
}
// Rule file
else if (strncmp(argv[i], "--rule-file=", 12) == 0)
{
TiXmlDocument doc;
if (doc.LoadFile(12+argv[i]))
{
TiXmlElement *root = doc.FirstChildElement();
if (root && root->ValueStr() == "rule")
{
Settings::Rule rule;
TiXmlElement *pattern = root->FirstChildElement("pattern");
if (pattern)
{
rule.pattern = pattern->GetText();
}
TiXmlElement *message = root->FirstChildElement("message");
if (message)
{
TiXmlElement *severity = message->FirstChildElement("severity");
if (severity)
rule.severity = severity->GetText();
TiXmlElement *id = message->FirstChildElement("id");
if (id)
rule.id = id->GetText();
TiXmlElement *summary = message->FirstChildElement("summary");
if (summary)
rule.summary = summary->GetText();
}
if (!rule.pattern.empty())
_settings->rules.push_back(rule);
}
}
}
#endif
// Print help
else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0)
{
_pathnames.clear();
_showHelp = true;
break;
}
else if (strncmp(argv[i], "-", 1) == 0 || strncmp(argv[i], "--", 2) == 0)
{
std::string message("cppcheck: error: unrecognized command line option \"");
message += argv[i];
message += "\"";
PrintMessage(message);
return false;
}
else
_pathnames.push_back(argv[i]);
}
if (_settings->isEnabled("unusedFunctions") && _settings->_jobs > 1)
{
PrintMessage("unusedFunctions check can't be used with -j option, so it was disabled.");
}
// FIXME: Make the _settings.test_2_pass thread safe
if (_settings->test_2_pass && _settings->_jobs > 1)
{
PrintMessage("--test-2-pass doesn't work with -j option yet.");
}
if (argc <= 1)
_showHelp = true;
if (_showHelp)
{
PrintHelp();
}
else if (_pathnames.empty())
{
PrintMessage("cppcheck: No C or C++ source files found.");
return false;
}
return true;
}
void CmdLineParser::PrintHelp()
{
std::cout << "Cppcheck - A tool for static C/C++ code analysis\n"
"\n"
"Syntax:\n"
" cppcheck [--append=file] [-D<ID>] [--enable=<id>] [--error-exitcode=[n]]\n"
" [--exitcode-suppressions file] [--file-list=file.txt] [--force]\n"
" [--help] [-Idir] [--inline-suppr] [-j [jobs]] [--quiet]\n"
" [--report-progress] [--style] [--suppressions file.txt]\n"
" [--verbose] [--version] [--xml] [file or path1] [file or path]\n"
"\n"
"If path is given instead of filename, *.cpp, *.cxx, *.cc, *.c++ and *.c files\n"
"are checked recursively from given directory.\n\n"
"Options:\n"
" --append=file This allows you to provide information about\n"
" functions by providing an implementation for these.\n"
" -D<ID> By default Cppcheck checks all configurations.\n"
" Use -D to limit the checking. When -D is used the\n"
" checking is limited to the given configuration.\n"
" Example: -DDEBUG=1 -D__cplusplus\n"
" --enable=id Enable additional checks. The available ids are:\n"
" * all - enable all checks\n"
" * style - Check coding style\n"
" * unusedFunction - check for unused functions\n"
" * missingInclude - check for missing includes\n"
" Several ids can be given if you separate them with commas\n"
" --error-exitcode=[n] If errors are found, integer [n] is returned instead\n"
" of default 0. EXIT_FAILURE is returned\n"
" if arguments are not valid or if no input files are\n"
" provided. Note that your operating system can\n"
" modify this value, e.g. 256 can become 0.\n"
" --exitcode-suppressions file\n"
" Used when certain messages should be displayed but\n"
" should not cause a non-zero exitcode.\n"
" --file-list=file Specify the files to check in a text file. One Filename per line.\n"
" -f, --force Force checking on files that have \"too many\"\n"
" configurations\n"
" -h, --help Print this help\n"
" -I [dir] Give include path. Give several -I parameters to give\n"
" several paths. First given path is checked first. If\n"
" paths are relative to source files, this is not needed\n"
" --inline-suppr Enable inline suppressions. Use them by placing one or\n"
" more comments in the form: // cppcheck-suppress memleak\n"
" on the lines before the warning to suppress.\n"
" -j [jobs] Start [jobs] threads to do the checking simultaneously.\n"
" -q, --quiet Only print error messages\n"
" --report-progress Report progress messages while checking a file.\n"
" -s, --style deprecated, use --enable=style\n"
" --suppressions file Suppress warnings listed in the file. Filename and line\n"
" are optional. The format of the single line in file is:\n"
" [error id]:[filename]:[line]\n"
" --template '[text]' Format the error messages. E.g.\n"
" '{file}:{line},{severity},{id},{message}' or\n"
" '{file}({line}):({severity}) {message}'\n"
" Pre-defined templates: gcc, vs\n"
" -v, --verbose More detailed error reports\n"
" --version Print out version number\n"
" --xml Write results in xml to error stream.\n"
"\n"
"Example usage:\n"
" # Recursively check the current folder. Print the progress on the screen and\n"
" write errors in a file:\n"
" cppcheck . 2> err.txt\n"
" # Recursively check ../myproject/ and don't print progress:\n"
" cppcheck --quiet ../myproject/\n"
" # Check only files one.cpp and two.cpp and give all information there is:\n"
" cppcheck -v -s one.cpp two.cpp\n"
" # Check f.cpp and search include files from inc1/ and inc2/:\n"
" cppcheck -I inc1/ -I inc2/ f.cpp\n"
"\n"
"For more information:\n"
" http://cppcheck.sf.net/manual.pdf\n";
}