X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=src%2Fgacela.c;h=fdb76db5156994278fccde594556d73e2d94d0c5;hb=ee8cc28a7551d08466af97636c38e55516a22876;hp=c36d0a13270eedefd09794ef1223f8d6d4554680;hpb=ddb41086a294d20c28c04b9aa20900acf3624506;p=gacela.git

diff --git a/src/gacela.c b/src/gacela.c
index c36d0a1..fdb76db 100644
--- a/src/gacela.c
+++ b/src/gacela.c
@@ -16,24 +16,216 @@
 */
 
 #include <libguile.h>
+#include <libgen.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+#include <signal.h>
+#include <sys/socket.h>
 #include "gacela_SDL.h"
 #include "gacela_GL.h"
+#include "gacela_FTGL.h"
+
+
+static int
+find_matching_paren (int k)
+{
+  register int i;
+  register char c = 0;
+  int end_parens_found = 0;
+
+  // Choose the corresponding opening bracket
+  if (k == ')') c = '(';
+  else if (k == ']') c = '[';
+  else if (k == '}') c = '{';
+
+  for (i = rl_point-2; i >= 0; i--)
+    {
+      // Is the current character part of a character literal?
+      if (i - 2 >= 0
+ 	  && rl_line_buffer[i - 1] == '\\'
+ 	  && rl_line_buffer[i - 2] == '#')
+ 	;
+      else if (rl_line_buffer[i] == k)
+ 	end_parens_found++;
+      else if (rl_line_buffer[i] == '"')
+ 	{
+ 	  // Skip over a string literal
+ 	  for (i--; i >= 0; i--)
+ 	    if (rl_line_buffer[i] == '"'
+ 		&& ! (i - 1 >= 0
+ 		      && rl_line_buffer[i - 1] == '\\'))
+ 	      break;
+ 	}
+      else if (rl_line_buffer[i] == c)
+ 	{
+ 	  if (end_parens_found==0) return i;
+ 	  else --end_parens_found;
+ 	}
+    }
+  return -1;
+}
+
+static int
+match_paren (int x, int k)
+{
+  int tmp;
+  int fno;
+  SELECT_TYPE readset;
+  struct timeval timeout;
+
+  rl_insert (x, k);
+
+  // Did we just insert a quoted paren?  If so, then don't bounce
+  if (rl_point - 1 >= 1
+      && rl_line_buffer[rl_point - 2] == '\\')
+    return 0;
+
+  tmp = 500000;
+  timeout.tv_sec = tmp / 1000000;
+  timeout.tv_usec = tmp % 1000000;
+  FD_ZERO (&readset);
+  fno = fileno (rl_instream);
+  FD_SET (fno, &readset);
+
+  if (rl_point > 1)
+    {
+      tmp = rl_point;
+      rl_point = find_matching_paren (k);
+      if (rl_point > -1)
+        {
+          rl_redisplay ();
+          scm_std_select (fno + 1, &readset, NULL, NULL, &timeout);
+        }
+      rl_point = tmp;
+    }
+  return 0;
+}
+
+void
+ctrl_c_handler (int signum)
+{
+  printf ("ERROR: User interrupt\nABORT: (signal)\n");
+}
+     
+static void
+init_gacela_client ()
+{
+  struct sigaction new_action;
+
+  // init bouncing parens
+  rl_bind_key (')', match_paren);
+  rl_bind_key (']', match_paren);
+  rl_bind_key ('}', match_paren);
+
+  // SIGINT
+  new_action.sa_handler = ctrl_c_handler;
+  sigemptyset (&new_action.sa_mask);
+  new_action.sa_flags = 0;
+
+  sigaction (SIGINT, &new_action, NULL);
+}
+
+void
+gacela_client (char *hostname, int port)
+{
+  int sockfd;
+  struct hostent *server;
+  struct sockaddr_in serv_addr;
+
+  char *line;
+  char *history_path;
+
+  // Connect to the server
+  sockfd = socket (AF_INET, SOCK_STREAM, 0);
+  server = gethostbyname (hostname);
+  bzero ((char *) &serv_addr, sizeof (serv_addr));
+  serv_addr.sin_family = AF_INET;
+  bcopy ((char *)server->h_addr, (char *)&serv_addr.sin_addr.s_addr, server->h_length);
+  serv_addr.sin_port = htons (port);
+  connect (sockfd, (struct sockaddr *) &serv_addr, sizeof (serv_addr));
+
+  // Command line
+  asprintf (&history_path, "%s/.gacela_history", getenv("HOME"));
+
+  init_gacela_client ();
+  read_history (history_path);
+
+  while (1) {
+    line = readline ("gacela> ");
+    if (!line) break;
+    if (line && *line)
+      {
+	printf ("%s\n", line);
+	add_history (line);
+      }
+    free (line);
+  }
+
+  write_history (history_path);
+  free (history_path);
+}
 
 static void*
-register_functions (void* data)
+init_gacela (void *data, int argc, char **argv)
 {
+  // Guile configuration
+  scm_c_eval_string ("(set-repl-prompt! \"gacela>\")");
+  scm_c_eval_string ("(use-modules (ice-9 readline))");
+  scm_c_eval_string ("(activate-readline)");
+  scm_c_eval_string ("(use-modules (ice-9 optargs))");
+  scm_c_eval_string ("(use-modules (ice-9 receive))");
+  //  scm_c_eval_string ("(read-enable 'case-insensitive)");
+
+  // Bindings for C functions and structs
   SDL_register_functions (NULL);
   GL_register_functions (NULL);
+  FTGL_register_functions (NULL);
+
   return NULL;
 }
 
+void
+load_scheme_files (char *path)
+{
+  char load_path[strlen (path) + 1024];
+
+  sprintf (load_path, "(set! %%load-path (cons \"%s\" %%load-path))", path);
+  scm_c_eval_string (load_path);
+  scm_primitive_load_path (scm_from_locale_string ("gacela_loader.scm"));
+}
+
+void
+start_single (int argc, char *argv[])
+{
+  scm_with_guile (&init_gacela, NULL);
+  load_scheme_files (dirname (argv[0]));
+  scm_shell (argc, argv);
+}
+
+void
+start_server (int argc, char *argv[])
+{
+  scm_with_guile (&init_gacela, NULL);
+  load_scheme_files (dirname (argv[0]));
+  scm_c_eval_string ("(start-server 1234)");
+  scm_c_eval_string ("(game-loop)");
+}
+
+void
+start_client (char *hostname, int port)
+{
+  scm_init_guile ();
+  gacela_client (hostname, port);
+}
+
 int
 main (int argc, char *argv[])
 {
-  scm_with_guile (&register_functions, NULL);
-  scm_init_guile ();
-  scm_c_eval_string ("(set-repl-prompt! \"gacela>\")");
-  scm_c_eval_string ("(use-modules (ice-9 readline))");
-  scm_c_eval_string ("(activate-readline)");
-  scm_shell (argc, argv);
+  start_single (argc, argv);
+  /*
+  if (fork () == 0)
+    start_server ();
+  else
+    start_client ("localhost", 1234);
+  */
 }