Rewritten to drop the readline dependency.

@@ -29,9 +29,12 @@
 #include <stdlib.h>
 #include <termios.h>
 #include <signal.h>
+#include <ctype.h>
 
-#include <readline/readline.h>
-#include <readline/history.h>
+#ifdef WITH_READLINE
+# include <readline/readline.h>
+# include <readline/history.h>
+#endif
 
 #include <mailutils/pop3.h>
 #include <mailutils/iterator.h>
@@ -68,7 +71,6 @@ int com_verbose (char *);
 void initialize_readline (void);
 char *stripwhite (char *);
 COMMAND *find_command (char *);
-void *xmalloc (size_t);
 char *dupstr (const char *);
 int execute_line (char *);
 int valid_argument (const char *, char *);
@@ -110,30 +112,123 @@ int verbose;
 /* When non-zero, this global means the user is done using this program. */
 int done;
 
-#if 0
-void *
-xmalloc (size_t size)
+char *
+dupstr (const char *s)
 {
-  void *m = malloc (size);
-  if (!m)
+  char *r;
+
+  r = malloc (strlen (s) + 1);
+  if (!r)
     {
       fprintf (stderr, "Memory exhausted\n");
       exit (1);
     }
-  return m;
+  strcpy (r, s);
+  return r;
+}
+
+
+#ifdef WITH_READLINE
+/* Interface to Readline Completion */
+
+char *command_generator (const char *, int);
+char **pop_completion (char *, int, int);
+
+/* Tell the GNU Readline library how to complete.  We want to try to complete
+   on command names if this is the first word in the line, or on filenames
+   if not. */
+void
+initialize_readline ()
+{
+  /* Allow conditional parsing of the ~/.inputrc file. */
+  rl_readline_name = (char *)"pop3";
+
+  /* Tell the completer that we want a crack first. */
+  rl_attempted_completion_function = (CPPFunction *)pop_completion;
+}
+
+/* Attempt to complete on the contents of TEXT.  START and END bound the
+   region of rl_line_buffer that contains the word to complete.  TEXT is
+   the word to complete.  We can use the entire contents of rl_line_buffer
+   in case we want to do some simple parsing.  Return the array of matches,
+   or NULL if there aren't any. */
+char **
+pop_completion (char *text, int start, int end)
+{
+  char **matches;
+
+  (void)end;
+  matches = (char **)NULL;
+
+  /* If this word is at the start of the line, then it is a command
+     to complete.  Otherwise it is the name of a file in the current
+     directory. */
+  if (start == 0)
+    matches = completion_matches (text, command_generator);
+
+  return (matches);
 }
-#endif
 
+/* Generator function for command completion.  STATE lets us know whether
+   to start from scratch; without any state (i.e. STATE == 0), then we
+   start at the top of the list. */
 char *
-dupstr (const char *s)
+command_generator (const char *text, int state)
 {
-  char *r;
+  static int list_index, len;
+  const char *name;
 
-  r = xmalloc (strlen (s) + 1);
-  strcpy (r, s);
-  return r;
+  /* If this is a new word to complete, initialize now.  This includes
+     saving the length of TEXT for efficiency, and initializing the index
+     variable to 0. */
+  if (!state)
+    {
+      list_index = 0;
+      len = strlen (text);
+    }
+
+  /* Return the next name which partially matches from the command list. */
+  while ((name = commands[list_index].name))
+    {
+      list_index++;
+
+      if (strncmp (name, text, len) == 0)
+        return (dupstr(name));
+    }
+
+  /* If no names matched, then return NULL. */
+  return ((char *)NULL);
+}
+
+#else
+void
+initialize_readline ()
+{
 }
 
+char *
+readline (char *prompt)
+{
+  char buf[255];
+
+  if (prompt)
+    {
+      printf ("%s", prompt);
+      fflush (stdout);
+    }
+
+  if (!fgets (buf, sizeof (buf), stdin))
+    return NULL;
+  return strdup (buf);
+}
+
+void
+add_history (const char *s)
+{
+}
+#endif
+
+
 int
 main (int argc, char **argv)
 {
@@ -186,11 +281,11 @@ execute_line (char *line)
 
   /* Isolate the command word. */
   i = 0;
-  while (line[i] && whitespace (line[i]))
+  while (line[i] && isspace (line[i]))
     i++;
   word = line + i;
 
-  while (line[i] && !whitespace (line[i]))
+  while (line[i] && !isspace (line[i]))
     i++;
 
   if (line[i])
@@ -205,7 +300,7 @@ execute_line (char *line)
     }
 
   /* Get argument to command, if any. */
-  while (whitespace (line[i]))
+  while (isspace (line[i]))
     i++;
 
   word = line + i;
@@ -236,95 +331,20 @@ stripwhite (char *string)
 {
   register char *s, *t;
 
-  for (s = string; whitespace (*s); s++)
+  for (s = string; isspace (*s); s++)
     ;
 
   if (*s == 0)
     return (s);
 
   t = s + strlen (s) - 1;
-  while (t > s && whitespace (*t))
+  while (t > s && isspace (*t))
     t--;
   *++t = '\0';
 
   return s;
 }
 
-/* **************************************************************** */
-/*                                                                  */
-/*                  Interface to Readline Completion                */
-/*                                                                  */
-/* **************************************************************** */
-
-char *command_generator (const char *, int);
-char **pop_completion (char *, int, int);
-
-/* Tell the GNU Readline library how to complete.  We want to try to complete
-   on command names if this is the first word in the line, or on filenames
-   if not. */
-void
-initialize_readline ()
-{
-  /* Allow conditional parsing of the ~/.inputrc file. */
-  rl_readline_name = (char *)"pop3";
-
-  /* Tell the completer that we want a crack first. */
-  rl_attempted_completion_function = (CPPFunction *)pop_completion;
-}
-
-/* Attempt to complete on the contents of TEXT.  START and END bound the
-   region of rl_line_buffer that contains the word to complete.  TEXT is
-   the word to complete.  We can use the entire contents of rl_line_buffer
-   in case we want to do some simple parsing.  Return the array of matches,
-   or NULL if there aren't any. */
-char **
-pop_completion (char *text, int start, int end)
-{
-  char **matches;
-
-  (void)end;
-  matches = (char **)NULL;
-
-  /* If this word is at the start of the line, then it is a command
-     to complete.  Otherwise it is the name of a file in the current
-     directory. */
-  if (start == 0)
-    matches = completion_matches (text, command_generator);
-
-  return (matches);
-}
-
-/* Generator function for command completion.  STATE lets us know whether
-   to start from scratch; without any state (i.e. STATE == 0), then we
-   start at the top of the list. */
-char *
-command_generator (const char *text, int state)
-{
-  static int list_index, len;
-  const char *name;
-
-  /* If this is a new word to complete, initialize now.  This includes
-     saving the length of TEXT for efficiency, and initializing the index
-     variable to 0. */
-  if (!state)
-    {
-      list_index = 0;
-      len = strlen (text);
-    }
-
-  /* Return the next name which partially matches from the command list. */
-  while ((name = commands[list_index].name))
-    {
-      list_index++;
-
-      if (strncmp (name, text, len) == 0)
-        return (dupstr(name));
-    }
-
-  /* If no names matched, then return NULL. */
-  return ((char *)NULL);
-}
-
 int
 com_verbose (char *arg)
 {
@@ -525,8 +545,7 @@ com_stat (char *arg)
 }
 
 int
-com_dele (arg)
-     char *arg;
+com_dele (char *arg)
 {
   unsigned msgno;
   if (!valid_argument ("dele", arg))
@@ -739,3 +758,4 @@ valid_argument (const char *caller, char *arg)
 
   return 1;
 }
+