parsing

Jarryd Beck
1 parent 5cd3fb22
Showing 3 changed files with 126 additions and 9 deletions
src/cxxopts.cpp
src/cxxopts.hpp
src/main.cpp
@@ -19,7 +19,8 @@ OptionAdder&amp;
 OptionAdder::operator()
 ( 
   const std::string& opts, 
-  const std::string& desc
+  const std::string& desc,
+  std::shared_ptr<const Value> value
 )
 {
   std::match_results<const char*> result;
@@ -33,13 +34,13 @@ OptionAdder::operator()
   const auto& s = result[2];
   const auto& l = result[3];
  
-  auto option = std::make_shared<OptionDetails>(desc);
+  auto option = std::make_shared<OptionDetails>(desc, value);
  
   if (s.length() != 0)
   {
-    auto result = m_options.m_short.insert(std::make_pair(s.str()[0], option));
+    auto in = m_options.m_short.insert(std::make_pair(s.str(), option));
  
-    if (!result.second)
+    if (!in.second)
     {
       throw option_exists_error(s.str());
     }
@@ -47,9 +48,9 @@ OptionAdder::operator()
  
   if (l.length() != 0)
   {
-    auto result = m_options.m_long.insert(std::make_pair(l, option));
+    auto in = m_options.m_long.insert(std::make_pair(l, option));
  
-    if (!result.second)
+    if (!in.second)
     {
       throw option_exists_error(l.str());
     }
@@ -58,4 +59,66 @@ OptionAdder::operator()
   return *this;
 }
  
+void
+Options::parse(int& argc, char**& argv)
+{
+  int current = 1;
+
+  std::set<int> consumed;
+
+  while (current != argc)
+  {
+    std::match_results<const char*> result;
+    std::regex_match(argv[current], result, option_matcher);
+
+    if (result.empty())
+    {
+      //handle empty
+
+      //if we return from here then it was parsed successfully, so continue
+    }
+    else
+    {
+      //short or long option?
+      if (result[4].length() != 0)
+      {
+        std::string s = result[4];
+
+        for (int i = 0; i != s.size(); ++i)
+        {
+          auto iter = m_short.find(std::string(1, s[i]));
+
+          if (iter == m_short.end())
+          {
+          }
+
+          auto value = iter->second;
+
+          if (value->has_arg())
+          {
+          }
+        }
+      }
+      else if (result[1].length() != 0)
+      {
+        if (result[3].length() != 0)
+        {
+          auto iter = m_long.find(result[3]);
+
+          if (iter == m_long.end())
+          {
+          }
+
+          auto value = iter->second;
+        }
+
+        //equals provided for long option?
+      }
+
+    }
+
+    ++current;
+  }
+}
+
 }
@@ -2,9 +2,40 @@
 #include <set>
 #include <map>
 #include <exception>
+#include <boost/any.hpp>
  
 namespace cxxopts
 {
+  using boost::any;
+
+  class Value
+  {
+    public:
+
+    virtual void
+    parse(const std::string& text, any& result) const = 0;
+
+    virtual bool
+    has_arg() const = 0;
+  };
+
+  namespace values
+  {
+    class Boolean : public Value
+    {
+      void
+      parse(const std::string& text, any& result) const
+      {
+      }
+
+      bool
+      has_arg() const
+      {
+        return false;
+      }
+    };
+  }
+
   extern std::basic_regex<char> option_matcher;
  
   extern std::basic_regex<char> option_specifier;
@@ -54,13 +85,32 @@ namespace cxxopts
   class OptionDetails
   {
     public:
-    OptionDetails(const std::string& description)
+    OptionDetails
+    (
+      const std::string& description,
+      std::shared_ptr<const Value> value
+    )
     : m_desc(description)
+    , m_parser(value)
+    {
+    }
+
+    const std::string& 
+    description() const
+    {
+      return m_desc;
+    }
+
+    bool
+    has_arg() const
     {
+      return m_parser->has_arg();
     }
  
     private:
+    boost::any m_value;
     std::string m_desc;
+    std::shared_ptr<const Value> m_parser;
   };
  
   class Options
@@ -76,7 +126,7 @@ namespace cxxopts
     private:
     friend class OptionAdder;
  
-    std::map<char, std::shared_ptr<OptionDetails>> m_short;
+    std::map<std::string, std::shared_ptr<OptionDetails>> m_short;
     std::map<std::string, std::shared_ptr<OptionDetails>> m_long;
   };
  
@@ -93,7 +143,9 @@ namespace cxxopts
     operator()
     ( 
       const std::string& opts, 
-      const std::string& desc
+      const std::string& desc,
+      std::shared_ptr<const Value> value
+        = std::make_shared<values::Boolean>()
     );
  
     private:
@@ -33,6 +33,8 @@ int main(int argc, char* argv[])
     ("b,bob", "Bob")
   ;
  
+  options.parse(argc, argv);
+
   } catch (const std::regex_error& e)
   {
     std::cout << "regex_error: " << e.what() << std::endl;