1 files changed, 60 insertions, 0 deletions
diff --git a/src/args.hh b/src/args.hh
new file mode 100644
index 0000000..10c56b3
--- /dev/null
+++ b/src/args.hh
@@ -0,0 +1,60 @@
+// -*- mode: c++; c-basic-offset: 2; -*-
+
+#ifndef ARGS_HH
+#define ARGS_HH
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+class Args {
+public:
+  virtual ~Args() {}
+
+  static Args* create();
+
+  virtual void add(char short_opt, std::string const& long_opt,
+                   std::string const& argument, std::string const& help) = 0;
+  void add(char short_opt, std::string const& long_opt,
+           std::string const& help) {
+    add(short_opt, long_opt, "", help);
+  }
+  void add(std::string const& long_opt, std::string const& help) {
+    add('\0', long_opt, "", help);
+  }
+  void add(std::string const& long_opt, std::string const& argument,
+           std::string const& help) {
+    add('\0', long_opt, argument, help);
+  }
+
+  bool run(int argc, char** argv) {
+    return run(argc, argv, std::cerr);
+  }
+  virtual bool run(int argc, char** argv, std::ostream& out) = 0;
+  bool run(std::string const& prg, int argc, char** argv) {
+    return run(prg, argc, argv, std::cerr);
+  }
+  virtual bool run(
+      std::string const& prg, int argc, char** argv, std::ostream& out) = 0;
+  virtual bool good() const = 0;
+
+  virtual bool is_set(char short_opt) const = 0;
+  virtual bool is_set(std::string const& long_opt) const = 0;
+  virtual char const* arg(char short_opt, char const* fallback) const = 0;
+  virtual char const* arg(std::string const& long_opt,
+                          char const* fallback) const = 0;
+
+  virtual std::vector<std::string> const& arguments() const = 0;
+
+  void print_help() const {
+    print_help(std::cout);
+  }
+  virtual void print_help(std::ostream& out) const = 0;
+  virtual void print_help(std::ostream& out, size_t width) const = 0;
+
+protected:
+  Args() {}
+  Args(Args const&) = delete;
+};
+
+#endif  // ARGS_HH