cppcheck/lib/errorlogger.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2012 Daniel Marjamäki and Cppcheck team.
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*
* 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/>.
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*/
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#include "errorlogger.h"
#include "path.h"
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#include "cppcheck.h"
#include <cassert>
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#include <sstream>
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#include <vector>
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InternalError::InternalError(const Token *tok, const std::string &errorMsg) :
token(tok), errorMessage(errorMsg)
{
}
ErrorLogger::ErrorMessage::ErrorMessage()
:_severity(Severity::none)
{
_inconclusive = false;
}
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ErrorLogger::ErrorMessage::ErrorMessage(const std::list<FileLocation> &callStack, Severity::SeverityType severity, const std::string &msg, const std::string &id, bool inconclusive)
{
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// locations for this error message
_callStack = callStack;
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// severity for this error message
_severity = severity;
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// set the summary and verbose messages
setmsg(msg);
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// set the message id
_id = id;
_inconclusive = inconclusive;
}
void ErrorLogger::ErrorMessage::setmsg(const std::string &msg)
{
// If a message ends to a '\n' and contains only a one '\n'
// it will cause the _verboseMessage to be empty which will show
// as an empty message to the user if --verbose is used.
// Even this doesn't cause problems with messages that have multiple
// lines, none of the the error messages should end into it.
assert(!(msg[msg.size()-1]=='\n'));
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// The summary and verbose message are separated by a newline
// If there is no newline then both the summary and verbose messages
// are the given message
const std::string::size_type pos = msg.find("\n");
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if (pos == std::string::npos) {
_shortMessage = msg;
_verboseMessage = msg;
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} else {
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_shortMessage = msg.substr(0, pos);
_verboseMessage = msg.substr(pos + 1);
}
}
std::string ErrorLogger::ErrorMessage::serialize() const
{
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// Serialize this message into a simple string
std::ostringstream oss;
oss << _id.length() << " " << _id;
oss << Severity::toString(_severity).length() << " " << Severity::toString(_severity);
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if (_inconclusive) {
const std::string inconclusive("inconclusive");
oss << inconclusive.length() << " " << inconclusive;
}
oss << _shortMessage.length() << " " << _shortMessage;
oss << _verboseMessage.length() << " " << _verboseMessage;
oss << _callStack.size() << " ";
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for (std::list<ErrorLogger::ErrorMessage::FileLocation>::const_iterator tok = _callStack.begin(); tok != _callStack.end(); ++tok) {
std::ostringstream smallStream;
smallStream << (*tok).line << ":" << (*tok).getfile();
oss << smallStream.str().length() << " " << smallStream.str();
}
return oss.str();
}
bool ErrorLogger::ErrorMessage::deserialize(const std::string &data)
{
_inconclusive = false;
_callStack.clear();
std::istringstream iss(data);
std::vector<std::string> results;
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while (iss.good()) {
unsigned int len = 0;
if (!(iss >> len))
return false;
iss.get();
std::string temp;
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for (unsigned int i = 0; i < len && iss.good(); ++i) {
char c = static_cast<char>(iss.get());
temp.append(1, c);
}
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if (temp == "inconclusive") {
_inconclusive = true;
continue;
}
results.push_back(temp);
if (results.size() == 4)
break;
}
_id = results[0];
_severity = Severity::fromString(results[1]);
_shortMessage = results[2];
_verboseMessage = results[3];
unsigned int stackSize = 0;
if (!(iss >> stackSize))
return false;
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while (iss.good()) {
unsigned int len = 0;
if (!(iss >> len))
return false;
iss.get();
std::string temp;
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for (unsigned int i = 0; i < len && iss.good(); ++i) {
char c = static_cast<char>(iss.get());
temp.append(1, c);
}
ErrorLogger::ErrorMessage::FileLocation loc;
loc.setfile(temp.substr(temp.find(':') + 1));
temp = temp.substr(0, temp.find(':'));
std::istringstream fiss(temp);
fiss >> loc.line;
_callStack.push_back(loc);
if (_callStack.size() >= stackSize)
break;
}
return true;
}
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std::string ErrorLogger::ErrorMessage::getXMLHeader(int xml_version)
{
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// xml_version 1 is the default xml format
// standard xml header
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std::ostringstream ostr;
ostr << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
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// version 1 header
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if (xml_version <= 1) {
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ostr << "<results>";
}
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// version 2 header
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else {
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ostr << "<results version=\"" << xml_version << "\">\n";
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ostr << " <cppcheck version=\"" << CppCheck::version() << "\"/>\n";
ostr << " <errors>";
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}
return ostr.str();
}
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std::string ErrorLogger::ErrorMessage::getXMLFooter(int xml_version)
{
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return (xml_version<=1) ? "</results>" : " </errors>\n</results>";
}
static std::string stringToXml(std::string s)
{
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// convert a string so it can be save as xml attribute data
std::string::size_type pos = 0;
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while ((pos = s.find_first_of("<>&\"\n", pos)) != std::string::npos) {
if (s[pos] == '<')
s.insert(pos + 1, "&lt;");
else if (s[pos] == '>')
s.insert(pos + 1, "&gt;");
else if (s[pos] == '&')
s.insert(pos + 1, "&amp;");
else if (s[pos] == '"')
s.insert(pos + 1, "&quot;");
else if (s[pos] == '\n')
s.insert(pos + 1, "&#xa;");
s.erase(pos, 1);
++pos;
}
return s;
}
std::string ErrorLogger::ErrorMessage::toXML(bool verbose, int version) const
{
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// Save this ErrorMessage as an XML element
std::ostringstream xml;
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// The default xml format
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if (version == 1) {
// No inconclusive messages in the xml version 1
if (_inconclusive)
return "";
xml << "<error";
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if (!_callStack.empty()) {
xml << " file=\"" << stringToXml(_callStack.back().getfile()) << "\"";
xml << " line=\"" << _callStack.back().line << "\"";
}
xml << " id=\"" << _id << "\"";
xml << " severity=\"" << (_severity == Severity::error ? "error" : "style") << "\"";
xml << " msg=\"" << stringToXml(verbose ? _verboseMessage : _shortMessage) << "\"";
xml << "/>";
}
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// The xml format you get when you use --xml-version=2
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else if (version == 2) {
// TODO: How should inconclusive messages be saved in the xml version 2?
if (_inconclusive)
return "";
xml << " <error";
xml << " id=\"" << _id << "\"";
xml << " severity=\"" << Severity::toString(_severity) << "\"";
xml << " msg=\"" << stringToXml(_shortMessage) << "\"";
xml << " verbose=\"" << stringToXml(_verboseMessage) << "\"";
xml << ">" << std::endl;
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for (std::list<FileLocation>::const_reverse_iterator it = _callStack.rbegin(); it != _callStack.rend(); ++it) {
xml << " <location";
xml << " file=\"" << stringToXml((*it).getfile()) << "\"";
xml << " line=\"" << (*it).line << "\"";
xml << "/>" << std::endl;
}
xml << " </error>";
}
return xml.str();
}
void ErrorLogger::ErrorMessage::findAndReplace(std::string &source, const std::string &searchFor, const std::string &replaceWith)
{
std::string::size_type index = 0;
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while ((index = source.find(searchFor, index)) != std::string::npos) {
source.replace(index, searchFor.length(), replaceWith);
index += replaceWith.length() - searchFor.length() + 1;
}
}
std::string ErrorLogger::ErrorMessage::toString(bool verbose, const std::string &outputFormat) const
{
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// Save this ErrorMessage in plain text.
// No template is given
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if (outputFormat.length() == 0) {
std::ostringstream text;
if (!_callStack.empty())
text << callStackToString(_callStack) << ": ";
if (_severity != Severity::none)
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text << '(' << Severity::toString(_severity) << ") ";
text << (verbose ? _verboseMessage : _shortMessage);
return text.str();
}
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// template is given. Reformat the output according to it
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else {
std::string result = outputFormat;
findAndReplace(result, "{id}", _id);
findAndReplace(result, "{severity}", Severity::toString(_severity));
findAndReplace(result, "{message}", verbose ? _verboseMessage : _shortMessage);
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if (!_callStack.empty()) {
std::ostringstream oss;
oss << _callStack.back().line;
findAndReplace(result, "{line}", oss.str());
findAndReplace(result, "{file}", _callStack.back().getfile());
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} else {
findAndReplace(result, "{file}", "");
findAndReplace(result, "{line}", "");
}
return result;
}
}
void ErrorLogger::reportUnmatchedSuppressions(const std::list<Suppressions::SuppressionEntry> &unmatched)
{
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for (std::list<Suppressions::SuppressionEntry>::const_iterator i = unmatched.begin(); i != unmatched.end(); ++i) {
std::list<ErrorLogger::ErrorMessage::FileLocation> callStack;
callStack.push_back(ErrorLogger::ErrorMessage::FileLocation(i->file, i->line));
reportErr(ErrorLogger::ErrorMessage(callStack, Severity::information, "Unmatched suppression: " + i->id, "unmatchedSuppression", false));
}
}
std::string ErrorLogger::callStackToString(const std::list<ErrorLogger::ErrorMessage::FileLocation> &callStack)
{
std::ostringstream ostr;
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for (std::list<ErrorLogger::ErrorMessage::FileLocation>::const_iterator tok = callStack.begin(); tok != callStack.end(); ++tok) {
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ostr << (tok == callStack.begin() ? "" : " -> ") << '[' << (*tok).getfile();
if ((*tok).line != 0)
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ostr << ':' << (*tok).line;
ostr << ']';
}
return ostr.str();
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}
std::string ErrorLogger::ErrorMessage::FileLocation::getfile(bool convert) const
{
std::string f = Path::simplifyPath(_file.c_str());
if (convert)
f = Path::toNativeSeparators(f);
return f;
}
void ErrorLogger::ErrorMessage::FileLocation::setfile(const std::string &file)
{
_file = file;
_file = Path::fromNativeSeparators(_file);
}