+#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);
+}