Initial Commit.

1 files changed, 250 insertions, 0 deletions

diff --git a/src/parameters/parameters.c b/src/parameters/parameters.c
new file mode 100644
index 0000000..63556f0
--- /dev/null
+++ b/src/parameters/parameters.c
@@ -0,0 +1,250 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+
+#include "../error/error.h"
+
+#include "parameters.h"
+
+static int parse_port
+(
+   struct JH_parameters param [const restrict static 1],
+   const char argv [const restrict]
+)
+{
+   long long int input;
+   const int old_errno = errno;
+
+   errno = 0;
+
+   input = strtoll(argv, (char **) NULL, 10);
+
+   if
+   (
+      (errno != 0)
+      || (input > (long long int) USHRT_MAX)
+      || (input < 1)
+   )
+   {
+      JH_FATAL
+      (
+         stderr,
+         "Invalid or value for parameter 'port', accepted "
+         "range is "
+         "[1, %hu] (integer).",
+         USHRT_MAX
+      );
+
+      errno = old_errno;
+
+      return -1;
+   }
+
+   param->port = (unsigned short) input;
+
+   errno = old_errno;
+
+   return 0;
+}
+
+static void set_default_to_all_fields
+(
+   struct JH_parameters param [const restrict static 1]
+)
+{
+   param->socket_name = (const char *) NULL;
+   param->server = (const char *) NULL;
+   param->password = (const char *) NULL;
+   param->nick = (const char *) NULL;
+   param->username = (const char *) NULL;
+   param->realname = (const char *) NULL;
+   param->channel = (const char *) NULL;
+   param->port = 0;
+   param->use_ipv6 = 0;
+}
+
+static int is_valid
+(
+   struct JH_parameters param [const restrict static 1]
+)
+{
+   int valid;
+
+   valid = 1;
+
+   if (param->socket_name == (const char *) NULL)
+   {
+      JH_S_FATAL(stderr, "Missing parameter: Zero of One socket name.");
+
+      valid = 0;
+   }
+
+   if (param->server == (const char *) NULL)
+   {
+      JH_S_FATAL(stderr, "Missing parameter: IRC server address.");
+
+      valid = 0;
+   }
+
+   if (param->nick == (const char *) NULL)
+   {
+      JH_S_FATAL(stderr, "Missing parameter: IRC nick.");
+
+      valid = 0;
+   }
+
+   if (param->channel == (const char *) NULL)
+   {
+      JH_S_FATAL(stderr, "Missing parameter: IRC channel.");
+
+      valid = 0;
+   }
+
+   if (param->port == 0)
+   {
+      JH_S_FATAL(stderr, "Missing parameter: IRC port.");
+
+      valid = 0;
+   }
+
+   return valid;
+}
+
+static void set_parameters
+(
+   struct JH_parameters param [const restrict static 1],
+   int const argc,
+   const char * argv [const static argc]
+)
+{
+   if (argc < 2)
+   {
+      return;
+   }
+
+   param->socket_name = argv[1];
+
+   if (argc < 3)
+   {
+      return;
+   }
+
+   param->server = argv[2];
+
+   if (argc < 4)
+   {
+      return;
+   }
+
+   param->nick = argv[3];
+
+   if (argc < 5)
+   {
+      return;
+   }
+
+   param->channel = argv[4];
+
+   if (argc < 6)
+   {
+      return;
+   }
+
+   parse_port(param, argv[5]);
+}
+
+static int set_options
+(
+   struct JH_parameters param [const restrict static 1],
+   int const argc,
+   const char * argv [const static argc]
+)
+{
+   int i;
+
+   for (i = (JH_PARAMETERS_COUNT + 1); i < argc; ++i)
+   {
+
+      if
+      (
+         JH_STRING_EQUALS("-6", argv[i])
+         || JH_STRING_EQUALS("--ipv6", argv[i])
+      )
+      {
+         param->use_ipv6 = 1;
+      }
+      else if
+      (
+         JH_STRING_EQUALS("-u", argv[i])
+         || JH_STRING_EQUALS("--username", argv[i])
+      )
+      {
+         if (i == (argc - 1))
+         {
+            JH_FATAL(stderr, "Missing value for option \"%s\".", argv[i]);
+
+            return -1;
+         }
+
+         param->username = argv[++i];
+      }
+      else if
+      (
+         JH_STRING_EQUALS("-r", argv[i])
+         || JH_STRING_EQUALS("--realname", argv[i])
+      )
+      {
+         if (i == (argc - 1))
+         {
+            JH_FATAL(stderr, "Missing value for option \"%s\".", argv[i]);
+
+            return -1;
+         }
+
+         param->realname = argv[++i];
+      }
+      else if
+      (
+         JH_STRING_EQUALS("-p", argv[i])
+         || JH_STRING_EQUALS("--password", argv[i])
+      )
+      {
+         if (i == (argc - 1))
+         {
+            JH_FATAL(stderr, "Missing value for option \"%s\".", argv[i]);
+
+            return -1;
+         }
+
+         param->password = argv[++i];
+      }
+      else
+      {
+         JH_FATAL(stderr, "Unrecognized option \"%s\".", argv[i]);
+
+         return -1;
+      }
+   }
+
+   return 0;
+}
+
+int JH_parameters_initialize
+(
+   struct JH_parameters param [const restrict static 1],
+   int const argc,
+   const char * argv [const static argc]
+)
+{
+   set_default_to_all_fields(param);
+
+   set_parameters(param, argc, argv);
+
+   if (!is_valid(param))
+   {
+      return -1;
+   }
+
+   return set_options(param, argc, argv);
+}