contrib/llvm/tools/lldb/source/Host/common/OptionParser.cpp

   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
  12 #if (!defined( _MSC_VER ) && defined( _WIN32 ))
  13 #define _BSD_SOURCE // Required so that getopt.h defines optreset
  14 #endif
  15 #include "lldb/Host/HostGetOpt.h"
  16
  17 using namespace lldb_private;
  18
  19 void
  20 OptionParser::Prepare()
  21 {
  22 #ifdef __GLIBC__
  23     optind = 0;
  24 #else
  25     optreset = 1;
  26     optind = 1;
  27 #endif
  28 }
  29
  30 void
  31 OptionParser::EnableError(bool error)
  32 {
  33     opterr = error ? 1 : 0;
  34 }
  35
  36 int
  37 OptionParser::Parse (int argc,
  38                      char * const argv [],
  39                      const char *optstring,
  40                      const Option *longopts,
  41                      int *longindex)
  42 {
  43     return getopt_long_only(argc, argv, optstring, (const option*)longopts, longindex);
  44 }
  45
  46 char*
  47 OptionParser::GetOptionArgument()
  48 {
  49     return optarg;
  50 }
  51
  52 int
  53 OptionParser::GetOptionIndex()
  54 {
  55     return optind;
  56 }
  57
  58 int
  59 OptionParser::GetOptionErrorCause()
  60 {
  61     return optopt;
  62 }
  63
  64 std::string
  65 OptionParser::GetShortOptionString(struct option *long_options)
  66 {
  67     std::string s;
  68     int i=0;
  69     bool done = false;
  70     while (!done)
  71     {
  72         if (long_options[i].name    == 0 &&
  73             long_options[i].has_arg == 0 &&
  74             long_options[i].flag    == 0 &&
  75             long_options[i].val     == 0)
  76         {
  77             done = true;
  78         }
  79         else
  80         {
  81             if (long_options[i].flag == NULL &&
  82                 isalpha(long_options[i].val))
  83             {
  84                 s.append(1, (char)long_options[i].val);
  85                 switch (long_options[i].has_arg)
  86                 {
  87                     default:
  88                     case no_argument:
  89                         break;
  90
  91                     case optional_argument:
  92                         s.append(2, ':');
  93                         break;
  94                     case required_argument:
  95                         s.append(1, ':');
  96                         break;
  97                 }
  98             }
  99             ++i;
 100         }
 101     }
 102     return s;
 103 }