/**
* Parses a config file with lines of the form
*
* flag = value
*
* and sets flags as appropriate.
*/
Status ParseConfigFile() {
Trace();
if (!g_configFile.wasSet()) {
Log(LL::Trace) << "No flag config file specified.";
return Status::ok();
}
const std::string &filename = g_configFile.get();
Log(LL::Trace) << "Begining parse of config file: " << filename;
std::ifstream ifile(filename.c_str());
if (!ifile.is_open()) {
Log(LL::Trace) << "Config file " << filename << " not found.";
return Status(Status::NOT_FOUND);
}
std::string line;
int lineno = 0;
while (std::getline(ifile, line)) {
if (line.empty()) {
lineno++;
continue;
}
std::vector< std::string > argstr =
Splitter().on('=').trimWhitespace().split(line, 2);
RET_SM(
argstr.size() == 2,
Status::BAD_INPUT,
"Error in config file \"" << filename << "\" "
<< "on line " << lineno
<< " is not a valid flag=value pair");
tFlagIter itr = GetGlobalFlags().find(argstr[0]);
RET_SM(
itr != GetGlobalFlags().end(),
Status::BAD_INPUT,
"Unknown flag: " << argstr[0] << " @ line " << lineno);
iFlagBase *pFlag = itr->second;
RET_SM(
pFlag->fromString(TrimQuotes(argstr[1])),
Status::BAD_INPUT,
"Invalid flag value for " << argstr[0] << " at line " << lineno
<< ". can't parse: " << argstr[1]);
lineno++;
}
return Status::ok();
}
Status ParseFlags(const int argc, const char **argv) {
Trace();
for (int i = 0; i < argc; ++i) {
Log(LL::Info) << "argv[" << i << "] = " << argv[i];
}
for (int i = 1; i < argc; ++i) {
const char *arg = argv[i];
if ((arg[0] != '-') || (arg[0] != '\0' && arg[1] != '-')) {
Log(LL::Error) << "Unknown commandline input #" << i << ": " << arg;
return Status::BAD_ARGUMENT;
}
std::vector< std::string > argstr =
Splitter().on('=').trimWhitespace().split(std::string(arg + 2), 2);
RET_SM(!argstr.empty(), Status::BAD_ARGUMENT, "Unknown flag: " << arg);
tFlagIter itr = GetGlobalFlags().find(argstr[0]);
RET_SM(
itr != GetGlobalFlags().end(),
Status::BAD_ARGUMENT,
"Unknown flag: " << arg);
iFlagBase *pFlag = itr->second;
if (argstr.size() == 2) {
// Parse case where we have [flag][=][value]
RET_SM(
pFlag->fromString(argstr.at(1)),
Status::BAD_ARGUMENT,
"Invalid flag value for " << argstr[0] << " can't parse "
<< argstr[1]);
} else if (i + 1 < argc) {
// Parse case where we have [flag][space][value]
++i;
RET_SM(
pFlag->fromString(std::string(argv[i])),
Status::BAD_ARGUMENT,
"Invalid flag value for " << argstr[0] << " can't parse " << argv[i]);
} else {
// Error on case where we have [flag] alone. Booleans must be specified
// as [flag][=][true]
Log(LL::Error) << "Found flag with no value: " << argstr[0];
return Status::BAD_ARGUMENT;
}
}
return ParseConfigFile();
}
bool ParseFlags(const int argc, const char **argv) {
Trace("Parsing " << argc << " flags from the cli");
for (int i = 0; i < argc; ++i) {
Log(LL::Info) << "argv[" << i << "] = " << argv[i] << std::endl;
}
for (int i = 1; i < argc; ++i) {
const char *arg = argv[i];
if ((arg[0] != '-') || (argv[0] != '\0' && arg[1] != '-')) {
Log(LL::Error) << "Unknown commandline input #" << i
<< ": " << arg << std::endl;
return false;
}
std::vector<std::string> argstr = core::util::Splitter()
.on('=')
.trimWhitespace()
.split(std::string(arg + 2), 2);
RET_M(!argstr.empty(), "Unknown flag: " << arg);
tFlagIter itr = GetGlobalFlags().find(argstr[0]);
RET_M(itr != GetGlobalFlags().end(), "Unknown flag: " << arg);
iFlagBase *pFlag = itr->second;
if (argstr.size() == 2) {
// Parse case where we have [flag][=][value]
RET_M(pFlag->fromString(argstr.at(1)),
"Invalid flag value for " << argstr[0] << " can't parse " << argstr[1]);
} else if (i + 1 < argc) {
// Parse case where we have [flag][space][value]
++i;
RET_M(pFlag->fromString(std::string(argv[i])),
"Invalid flag value for " << argstr[0] << " can't parse " << argv[i]);
} else {
// Error on case where we have [flag] alone. Booleans must be specified as [flag][=][true]
Log(LL::Error) << "Found flag with no value: " << argstr[0] << std::endl;
return false;
}
}
Trace("Finished parsing cli flags");
return ParseConfigFile(g_configFile.get());
}
/**
* Parses a config file with lines of the form
*
* flag = value
*
* and sets flags as appropriate.
*/
bool ParseConfigFile(const std::string &filename) {
Trace("Begining parse of config file: " << filename);
std::ifstream ifile(filename.c_str());
if (!ifile.is_open()) {
Log(LL::Info) << "Config file " << filename << " not found." << std::endl;
return true;
}
std::string line;
int lineno = 0;
while (std::getline(ifile, line)) {
if (line.empty()) {
lineno++;
continue;
}
std::vector<std::string> argstr = core::util::Splitter()
.on('=')
.trimWhitespace()
.split(line, 2);
RET_M(argstr.size() == 2, "Error in config file \"" << filename << "\" "
<< "on line " << lineno << " is not a valid flag=value pair");
tFlagIter itr = GetGlobalFlags().find(argstr[0]);
RET_M(itr != GetGlobalFlags().end(), "Unknown flag: " << argstr[0]);
iFlagBase *pFlag = itr->second;
RET_M(pFlag->fromString(core::util::trimQuotes(argstr[1])),
"Invalid flag value for " << argstr[0] << " can't parse " << argstr[1]);
lineno++;
}
Trace("Finished parsing config file of length: " << lineno);
return true;
}
