1 files changed, 85 insertions, 6 deletions

diff --git a/checks/getopt.h b/checks/getopt.h
index 68e6bd874..67cf979f9 100644
--- a/checks/getopt.h
+++ b/checks/getopt.h
@@ -9,19 +9,92 @@
 
 #include <string>
 #include <vector>
+#include <stdexcept>
 #include <map>
 
+#include <botan/parsing.h>
+
 class OptionParser
    {
    public:
       std::vector<std::string> leftovers() const { return leftover; }
-      bool is_set(const std::string&) const;
 
-      std::string value(const std::string&) const;
-      std::string value_if_set(const std::string&) const;
+      bool is_set(const std::string& key) const
+         {
+         return (options.find(key) != options.end());
+         }
+
+      std::string value(const std::string& key) const
+         {
+         std::map<std::string, std::string>::const_iterator i = options.find(key);
+         if(i == options.end())
+            throw std::runtime_error("Option " + key + " not found");
+         return i->second;
+         }
+
+      std::string value_if_set(const std::string& key) const
+         {
+         return value_or_else(key, "");
+         }
+
+      std::string value_or_else(const std::string& key,
+                                const std::string& or_else) const
+         {
+         return is_set(key) ? value(key) : or_else;
+         }
+
+      void parse(char* argv[])
+         {
+         std::vector<std::string> args;
+         for(int j = 1; argv[j]; j++)
+            args.push_back(argv[j]);
+
+         for(size_t j = 0; j != args.size(); j++)
+            {
+            std::string arg = args[j];
+
+            if(arg.size() > 2 && arg[0] == '-' && arg[1] == '-')
+               {
+               const std::string opt_name = arg.substr(0, arg.find('='));
+
+               arg = arg.substr(2);
+
+               std::string::size_type mark = arg.find('=');
+               OptionFlag opt = find_option(arg.substr(0, mark));
+
+               if(opt.takes_arg())
+                  {
+                  if(mark == std::string::npos)
+                     throw std::runtime_error("Option " + opt_name +
+                                              " requires an argument");
+
+                  std::string name = arg.substr(0, mark);
+                  std::string value = arg.substr(mark+1);
+
+                  options[name] = value;
+                  }
+               else
+                  {
+                  if(mark != std::string::npos)
+                     throw std::runtime_error("Option " + opt_name +
+                                              " does not take an argument");
+
+                  options[arg] = "";
+                  }
+               }
+            else
+               leftover.push_back(arg);
+            }
+         }
+
+      OptionParser(const std::string& opt_string)
+         {
+         std::vector<std::string> opts = Botan::split_on(opt_string, '|');
+
+         for(size_t j = 0; j != opts.size(); j++)
+            flags.push_back(OptionFlag(opts[j]));
+         }
 
-      void parse(char*[]);
-      OptionParser(const std::string&);
    private:
       class OptionFlag
          {
@@ -40,7 +113,13 @@ class OptionParser
             bool opt_takes_arg;
          };
 
-      OptionFlag find_option(const std::string&) const;
+      OptionFlag find_option(const std::string& name) const
+         {
+         for(size_t j = 0; j != flags.size(); j++)
+            if(flags[j].name() == name)
+               return flags[j];
+         throw std::runtime_error("Unknown option " + name);
+         }
 
       std::vector<OptionFlag> flags;
       std::map<std::string, std::string> options;