OptionParser.cpp
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//===-- source/Host/common/OptionParser.cpp -------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/OptionParser.h"
#include "lldb/Host/HostGetOpt.h"
#include "lldb/lldb-private-types.h"
#include <vector>
using namespace lldb_private;
void OptionParser::Prepare(std::unique_lock<std::mutex> &lock) {
static std::mutex g_mutex;
lock = std::unique_lock<std::mutex>(g_mutex);
#ifdef __GLIBC__
optind = 0;
#else
optreset = 1;
optind = 1;
#endif
}
void OptionParser::EnableError(bool error) { opterr = error ? 1 : 0; }
int OptionParser::Parse(llvm::MutableArrayRef<char *> argv,
llvm::StringRef optstring, const Option *longopts,
int *longindex) {
std::vector<option> opts;
while (longopts->definition != nullptr) {
option opt;
opt.flag = longopts->flag;
opt.val = longopts->val;
opt.name = longopts->definition->long_option;
opt.has_arg = longopts->definition->option_has_arg;
opts.push_back(opt);
++longopts;
}
opts.push_back(option());
std::string opt_cstr = std::string(optstring);
return getopt_long_only(argv.size() - 1, argv.data(), opt_cstr.c_str(),
&opts[0], longindex);
}
char *OptionParser::GetOptionArgument() { return optarg; }
int OptionParser::GetOptionIndex() { return optind; }
int OptionParser::GetOptionErrorCause() { return optopt; }
std::string OptionParser::GetShortOptionString(struct option *long_options) {
std::string s;
int i = 0;
bool done = false;
while (!done) {
if (long_options[i].name == nullptr && long_options[i].has_arg == 0 &&
long_options[i].flag == nullptr && long_options[i].val == 0) {
done = true;
} else {
if (long_options[i].flag == nullptr && isalpha(long_options[i].val)) {
s.append(1, (char)long_options[i].val);
switch (long_options[i].has_arg) {
default:
case no_argument:
break;
case optional_argument:
s.append(2, ':');
break;
case required_argument:
s.append(1, ':');
break;
}
}
++i;
}
}
return s;
}