along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <stdio.h>
+#include <string.h>
#include <libguile.h>
+#include <libgen.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+#include <signal.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
#include "gacela_SDL.h"
#include "gacela_GL.h"
+#include "gacela_FTGL.h"
+
+
+// Generic variables
+int ctrl_c = 0;
+
+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");
+ ctrl_c = 1;
+}
+
+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, n;
+ struct hostent *server;
+ struct sockaddr_in serv_addr;
+ char buffer[256];
+ 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> ");
+ ctrl_c = 0;
+ if (!line) break;
+ if (line && *line)
+ {
+ add_history (line);
+ write (sockfd, "(", 1);
+ n = write (sockfd, line, strlen (line));
+ write (sockfd, ")", 1);
+ if (n < 0)
+ error("ERROR writing to socket");
+
+ bzero (buffer, 256);
+ n = read (sockfd, buffer, sizeof (buffer));
+ while (n == 0) {
+ if (ctrl_c) break;
+ sleep (1);
+ n = read (sockfd, buffer, sizeof (buffer));
+ }
+ if (n < 0)
+ error("ERROR reading from socket");
+ if (ctrl_c)
+ ctrl_c = 0;
+ else
+ printf ("%s\n", buffer);
+ }
+ free (line);
+ }
+
+ close (sockfd);
+ 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 (char *working_path)
+{
+ char *argv = "guile";
+
+ scm_with_guile (&init_gacela, NULL);
+ load_scheme_files (working_path);
+ scm_shell (1, &argv);
+}
+
+void
+start_server (char *working_path, int port)
+{
+ char start_server[100];
+
+ scm_with_guile (&init_gacela, NULL);
+ load_scheme_files (working_path);
+ sprintf (start_server, "(start-server %d)", port);
+ scm_c_eval_string (start_server);
+}
+
+void
+start_client (char *hostname, int port)
+{
+ scm_init_guile ();
+ gacela_client (hostname, port);
+}
+
int
main (int argc, char *argv[])
{
- scm_with_guile (®ister_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);
+ char *arg;
+ int mode = 0; // shell: 1, server: 2, client: 3
+ char *host;
+ int port = 0;
+ int i;
+
+ // Checking arguments
+ for (i = 1; i < argc; i++) {
+ if (strcmp (argv[i], "--shell-mode") == 0)
+ mode = 1;
+ else if (strncmp (argv[i], "--server", 8) == 0) {
+ mode = 2;
+ arg = strtok (argv[i], "=");
+ arg = strtok (NULL, "=");
+ if (arg != NULL)
+ port = atoi (arg);
+ }
+ else if (strncmp (argv[i], "--client", 8) == 0) {
+ mode = 3;
+ arg = strtok (argv[i], "=");
+ arg = strtok (NULL, "=");
+ if (arg != NULL) {
+ host = strtok (arg, ":");
+ arg = strtok (NULL, ":");
+ if (arg != NULL)
+ port = atoi (arg);
+ }
+ }
+ }
+
+ if (mode == 1)
+ start_single (dirname (argv[0]));
+ else if (mode == 2 && port != 0)
+ start_server (dirname (argv[0]), port);
+ else if (mode == 3 && port != 0)
+ start_client (host, port);
+ /*
+ if (fork () == 0)
+ start_server ();
+ else
+ start_client ("localhost", 1234);
+ */
}
projects / gacela.git / blobdiff