1 //===-- source/Host/common/OptionParser.cpp ---------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "lldb/Host/OptionParser.h"
11 #include "lldb/Host/HostGetOpt.h"
12 #include "lldb/lldb-private-types.h"
13
14 #include <vector>
15
16 using namespace lldb_private;
17
Prepare(std::unique_lock<std::mutex> & lock)18 void OptionParser::Prepare(std::unique_lock<std::mutex> &lock) {
19 static std::mutex g_mutex;
20 lock = std::unique_lock<std::mutex>(g_mutex);
21 #ifdef __GLIBC__
22 optind = 0;
23 #else
24 optreset = 1;
25 optind = 1;
26 #endif
27 }
28
EnableError(bool error)29 void OptionParser::EnableError(bool error) { opterr = error ? 1 : 0; }
30
Parse(int argc,char * const argv[],llvm::StringRef optstring,const Option * longopts,int * longindex)31 int OptionParser::Parse(int argc, char *const argv[], llvm::StringRef optstring,
32 const Option *longopts, 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(argc, argv, opt_cstr.c_str(), &opts[0], longindex);
46 }
47
GetOptionArgument()48 char *OptionParser::GetOptionArgument() { return optarg; }
49
GetOptionIndex()50 int OptionParser::GetOptionIndex() { return optind; }
51
GetOptionErrorCause()52 int OptionParser::GetOptionErrorCause() { return optopt; }
53
GetShortOptionString(struct option * long_options)54 std::string OptionParser::GetShortOptionString(struct option *long_options) {
55 std::string s;
56 int i = 0;
57 bool done = false;
58 while (!done) {
59 if (long_options[i].name == 0 && long_options[i].has_arg == 0 &&
60 long_options[i].flag == 0 && long_options[i].val == 0) {
61 done = true;
62 } else {
63 if (long_options[i].flag == NULL && isalpha(long_options[i].val)) {
64 s.append(1, (char)long_options[i].val);
65 switch (long_options[i].has_arg) {
66 default:
67 case no_argument:
68 break;
69
70 case optional_argument:
71 s.append(2, ':');
72 break;
73 case required_argument:
74 s.append(1, ':');
75 break;
76 }
77 }
78 ++i;
79 }
80 }
81 return s;
82 }
83