Bring in Leo's <lsh@lubrizol.com> massive changes to libpq++

src/interfaces/libpq++/pgenv.h

@@ -0,0 +1,79 @@
+/*-------------------------------------------------------------------------
+ *
+ * pgenv.h
+ *    
+ *
+ *   DESCRIPTION
+ *		Postgres Environment Class: manages and stores all the required
+ *		connection variables.
+ *
+ *   NOTES
+ *      Currently under construction.
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ *-------------------------------------------------------------------------
+ */
+ 
+#ifndef PGENV_H
+#define PGENV_H
+
+#include <string>
+
+
+//
+// these are the environment variables used for getting defaults
+//
+
+#define ENV_DEFAULT_AUTH   "PGAUTH"
+#define ENV_DEFAULT_DBASE  "PGDATABASE"
+#define ENV_DEFAULT_HOST   "PGHOST"
+#define ENV_DEFAULT_OPTION "PGOPTION"
+#define ENV_DEFAULT_PORT   "PGPORT"
+#define ENV_DEFAULT_TTY    "PGTTY"
+ 
+
+// ****************************************************************
+//
+// PgEnv - the environment for setting up a connection to postgres
+//
+// ****************************************************************
+class PgEnv {
+private:
+  string pgAuth;
+  string pgHost;
+  string pgPort;
+  string pgOption;
+  string pgTty;
+  
+public:
+  PgEnv();  // default ctor will use reasonable defaults
+            // will use environment  variables PGHOST, PGPORT,
+            // PGOPTION, PGTTY
+  PgEnv(const string& auth, const string& host, const string& port, 
+        const string& option, const string& tty);
+  
+  // Access methods to all the environment variables
+  const char* Auth() { return pgAuth.c_str(); }
+  void Auth(const string& auth) { pgAuth = auth; }
+  
+  const char* Host() { return pgHost.c_str(); }
+  void Host(const string& host) { pgHost = host; }
+  
+  const char* Port() { return pgPort.c_str(); }
+  void Port(const string& port) { pgPort = port; }
+  
+  const char* Option() { return pgOption.c_str(); }
+  void Option(const string& option) { pgOption = option; }
+  
+  const char* TTY() { return pgTty.c_str(); }
+  void TTY(const string& tty) { pgTty = tty; }
+  
+  void SetValues(const string& auth, const string& host, const string& port, 
+                 const string& option, const string& tty);
+                 
+protected:
+  string getenv(const char*);
+};
+
+#endif	// PGENV_H