1 //===-- source/Host/common/OptionParser.cpp ---------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "lldb/Host/OptionParser.h"
10 #include "lldb/Host/HostGetOpt.h"
11 #include "lldb/lldb-private-types.h"
12
13 #include <vector>
14
15 using namespace lldb_private;
16
Prepare(std::unique_lock<std::mutex> & lock)17 void OptionParser::Prepare(std::unique_lock<std::mutex> &lock) {
18 static std::mutex g_mutex;
19 lock = std::unique_lock<std::mutex>(g_mutex);
20 #ifdef __GLIBC__
21 optind = 0;
22 #else
23 optreset = 1;
24 optind = 1;
25 #endif
26 }
27
EnableError(bool error)28 void OptionParser::EnableError(bool error) { opterr = error ? 1 : 0; }
29
Parse(llvm::MutableArrayRef<char * > argv,llvm::StringRef optstring,const Option * longopts,int * longindex)30 int OptionParser::Parse(llvm::MutableArrayRef<char *> argv,
31 llvm::StringRef optstring, const Option *longopts,
32 int *longindex) {
33 std::vector<option> opts;
34 while (longopts->definition != nullptr) {
35 option opt;
36 opt.flag = longopts->flag;
37 opt.val = longopts->val;
38 opt.name = longopts->definition->long_option;
39 opt.has_arg = longopts->definition->option_has_arg;
40 opts.push_back(opt);
41 ++longopts;
42 }
43 opts.push_back(option());
44 std::string opt_cstr = optstring;
45 return getopt_long_only(argv.size() - 1, argv.data(), opt_cstr.c_str(),
46 &opts[0], longindex);
47 }
48
GetOptionArgument()49 char *OptionParser::GetOptionArgument() { return optarg; }
50
GetOptionIndex()51 int OptionParser::GetOptionIndex() { return optind; }
52
GetOptionErrorCause()53 int OptionParser::GetOptionErrorCause() { return optopt; }
54
GetShortOptionString(struct option * long_options)55 std::string OptionParser::GetShortOptionString(struct option *long_options) {
56 std::string s;
57 int i = 0;
58 bool done = false;
59 while (!done) {
60 if (long_options[i].name == nullptr && long_options[i].has_arg == 0 &&
61 long_options[i].flag == nullptr && long_options[i].val == 0) {
62 done = true;
63 } else {
64 if (long_options[i].flag == nullptr && isalpha(long_options[i].val)) {
65 s.append(1, (char)long_options[i].val);
66 switch (long_options[i].has_arg) {
67 default:
68 case no_argument:
69 break;
70
71 case optional_argument:
72 s.append(2, ':');
73 break;
74 case required_argument:
75 s.append(1, ':');
76 break;
77 }
78 }
79 ++i;
80 }
81 }
82 return s;
83 }
84