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#include "cmSystemTools.h"
class CompileCommandParser {
public:
class CommandType: public std::map<cmStdString, cmStdString>
{
public:
cmStdString const& at(cmStdString const& k) const
{
const_iterator i = this->find(k);
if(i != this->end()) { return i->second; }
static cmStdString emptyString;
return emptyString;
}
};
typedef std::vector<CommandType> TranslationUnitsType;
CompileCommandParser(std::ifstream *input)
{
this->Input = input;
}
void Parse()
{
NextNonWhitespace();
ParseTranslationUnits();
}
const TranslationUnitsType& GetTranslationUnits()
{
return this->TranslationUnits;
}
private:
void ParseTranslationUnits()
{
this->TranslationUnits = TranslationUnitsType();
ExpectOrDie('[', "at start of compile command file\n");
do
{
ParseTranslationUnit();
this->TranslationUnits.push_back(this->Command);
} while(Expect(','));
ExpectOrDie(']', "at end of array");
}
void ParseTranslationUnit()
{
this->Command = CommandType();
if(!Expect('{')) return;
if(Expect('}')) return;
do
{
ParseString();
std::string name = this->String;
ExpectOrDie(':', "between name and value");
ParseString();
std::string value = this->String;
this->Command[name] = value;
} while(Expect(','));
ExpectOrDie('}', "at end of object");
}
void ParseString()
{
this->String = "";
if(!Expect('"')) return;
while (!Expect('"'))
{
Expect('\\');
this->String.append(1,C);
Next();
}
}
bool Expect(char c)
{
if(this->C == c)
{
NextNonWhitespace();
return true;
}
return false;
}
void ExpectOrDie(char c, const std::string & message)
{
if (!Expect(c))
ErrorExit(std::string("'") + c + "' expected " + message + ".");
}
void NextNonWhitespace()
{
do { Next(); } while (IsWhitespace());
}
void Next()
{
this->C = char(Input->get());
if (this->Input->bad()) ErrorExit("Unexpected end of file.");
}
void ErrorExit(const std::string &message) {
std::cout << "ERROR: " << message;
exit(1);
}
bool IsWhitespace()
{
return (this->C == ' ' || this->C == '\t' ||
this->C == '\n' || this->C == '\r');
}
char C;
TranslationUnitsType TranslationUnits;
CommandType Command;
std::string String;
std::ifstream *Input;
};
int main ()
{
std::ifstream file("compile_commands.json");
CompileCommandParser parser(&file);
parser.Parse();
for(CompileCommandParser::TranslationUnitsType::const_iterator
it = parser.GetTranslationUnits().begin(),
end = parser.GetTranslationUnits().end(); it != end; ++it)
{
std::vector<cmStdString> command;
cmSystemTools::ParseUnixCommandLine(it->at("command").c_str(), command);
if (!cmSystemTools::RunSingleCommand(
command, 0, 0, it->at("directory").c_str()))
{
std::cout << "ERROR: Failed to run command \""
<< command[0] << "\"" << std::endl;
exit(1);
}
}
return 0;
}
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