From 174d2e3ae49ed3776449d3dade24cebee304bfb5 Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Thu, 22 Nov 2012 15:34:11 -0800
Subject: move argParser to utils.h

---
 tools/utils.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'tools/utils.h')

diff --git a/tools/utils.h b/tools/utils.h
index 2c531b8..4f5418f 100644
--- a/tools/utils.h
+++ b/tools/utils.h
@@ -1,3 +1,6 @@
+#include <string>
+#include <list>
+
 std::string basename(const std::string path);
 int prefix(const std::string shorter, const std::string longer);
 std::string time_out(const int _ttt);
@@ -12,3 +15,44 @@ std::string rtrim(const std::string foo,
 
 std::string trim(const std::string foo,
         const std::string strip = " \t\r\n");
+
+typedef const char cc;
+typedef cc* str;
+
+class argParser{
+public:
+  std::list<str> argv;
+  std::string current_arg;
+
+  argParser(const int _argc, const str _argv[])
+  {
+    for (int ii=0; ii < _argc; ii++) {
+      argv.push_back(_argv[ii]);
+    }
+  }
+  std::string shift() {
+    using namespace std;
+    string rslt = argv.front();
+    argv.pop_front();
+    return rslt;
+  }
+  void next(){
+    current_arg = shift();
+  }
+  size_t size() const {
+    return argv.size();
+  }
+  int prefix(const std::string longer, const size_t required = 0){
+    using namespace std;
+    if (argv.size() < required) {
+      if (required==1)
+        cerr << "Option '" << current_arg
+          << "' requires an argument." << endl;
+      else
+        cerr << "Option '" << current_arg
+          << "' requires " << required << " arguments." << endl;
+      throw int(1);
+    }
+    return current_arg == longer.substr(0, current_arg.length());
+  }
+};
-- 
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