(no commit message)

[gacela.git] / src / gacela.c

diff --git a/src/gacela.c b/src/gacela.c
index 6891d4b9f1180e661f256703cd07fde8b68c1c18..489d8c622897b8ad365c35b21898d42579f1afc5 100644 (file)
--- a/src/gacela.c
+++ b/src/gacela.c
@@ -133,13 +133,36 @@ init_gacela_client ()
   sigaction (SIGINT, &new_action, NULL);
 }
 
+int
+opened_parens (char *line, int k)
+{
+  int i;
+  int opened = 0;
+  char c = 0;
+
+  // Choose the corresponding opening bracket
+  if (k == ')') c = '(';
+  else if (k == ']') c = '[';
+  else if (k == '}') c = '{';
+
+  for (i = 0; i < strlen (line); i++) {
+    if (line[i] == c)
+      opened++;
+    else if (line[i] == k)
+      opened--;
+  }
+
+  return opened;
+}
+
 void
 gacela_client (SCM rec_channel, SCM send_channel)
 {
   int n;
   SCM buffer;
-  char *line;
+  char *line, *line_for_sending;
   char *history_path;
+  int opened = 0;
 
   // Command line
   asprintf (&history_path, "%s/.gacela_history", getenv("HOME"));
@@ -148,25 +171,32 @@ gacela_client (SCM rec_channel, SCM send_channel)
   read_history (history_path);
 
   while (1) {
-    line = readline ("gacela> ");
+    if (opened > 0)
+      line = readline ("... ");
+    else
+      line = readline ("gacela> ");
+
+    opened += opened_parens (line, ')');
     ctrl_c = 0;
     if (!line) break;
     if (line && *line)
       {
        add_history (line);
-       scm_write (scm_from_locale_string (line), send_channel);
-       scm_force_output (send_channel);
-
-       while (scm_char_ready_p (rec_channel) == SCM_BOOL_F) {
-         if (ctrl_c) break;
-         sleep (0.5);
-       }
-       if (ctrl_c)
-         ctrl_c = 0;
-       else {
-         buffer = scm_read (rec_channel);
-         if (strlen (scm_to_locale_string (buffer)) > 0)
-           printf ("%s\n", scm_to_locale_string (buffer));
+       if (opened == 0) {
+         scm_write (scm_from_locale_string (line), send_channel);
+         scm_force_output (send_channel);
+
+         while (scm_char_ready_p (rec_channel) == SCM_BOOL_F) {
+           if (ctrl_c) break;
+           sleep (0.5);
+         }
+         if (ctrl_c)
+           ctrl_c = 0;
+         else {
+           buffer = scm_read (rec_channel);
+           if (strlen (scm_to_locale_string (buffer)) > 0)
+             printf ("%s\n", scm_to_locale_string (buffer));
+         }
        }
       }
     free (line);