LLDB  mainline
OptionParser.cpp
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1 //===-- source/Host/common/OptionParser.cpp -------------------------------===//
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 
10 #include "lldb/Host/HostGetOpt.h"
12 
13 #include <vector>
14 
15 using namespace lldb_private;
16 
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 
28 void OptionParser::EnableError(bool error) { opterr = error ? 1 : 0; }
29 
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 = std::string(optstring);
45  return getopt_long_only(argv.size() - 1, argv.data(), opt_cstr.c_str(),
46  &opts[0], longindex);
47 }
48 
49 char *OptionParser::GetOptionArgument() { return optarg; }
50 
51 int OptionParser::GetOptionIndex() { return optind; }
52 
53 int OptionParser::GetOptionErrorCause() { return optopt; }
54 
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 }
A class that represents a running process on the host machine.
static int GetOptionErrorCause()
static void EnableError(bool error)
static void Prepare(std::unique_lock< std::mutex > &lock)
static char * GetOptionArgument()
static std::string GetShortOptionString(struct option *long_options)
const OptionDefinition * definition
Definition: OptionParser.h:26
static int Parse(llvm::MutableArrayRef< char *> argv, llvm::StringRef optstring, const Option *longopts, int *longindex)
Argv must be an argument vector "as passed to main", i.e.