X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fui%2Fterminal%2Fterminal-reader.c;h=b8c71447ce5c7563c6bde942f7bf9bde18767723;hb=c193302d89917211fc7cff16203a1787a295ee9a;hp=a3f33e725589a005f4b4d92a115d119e327614b4;hpb=0b0ca44889e637251cb5f2dbf3c7fdc4ec8b9bd7;p=pspp

diff --git a/src/ui/terminal/terminal-reader.c b/src/ui/terminal/terminal-reader.c
index a3f33e7255..b8c71447ce 100644
--- a/src/ui/terminal/terminal-reader.c
+++ b/src/ui/terminal/terminal-reader.c
@@ -26,18 +26,13 @@
 #if HAVE_READLINE
 #include <readline/readline.h>
 #include <readline/history.h>
+#include <termios.h>
 
 static char *history_file;
 
 static char **complete_command_name (const char *, int, int);
 static char **dont_complete (const char *, int, int);
 static char *command_generator (const char *text, int state);
-
-static const bool have_readline = true;
-
-#else
-static const bool have_readline = false;
-static int rl_end;
 #endif
 
 
@@ -51,7 +46,6 @@ static int rl_end;
 #include <stdint.h>
 #include <stdlib.h>
 
-#include "data/file-name.h"
 #include "data/settings.h"
 #include "language/command.h"
 #include "language/lexer/lexer.h"
@@ -97,8 +91,8 @@ welcome (void)
 	 "it\nunder certain conditions; type \"show copying.\" to see the "
 	 "conditions.\nThere is ABSOLUTELY NO WARRANTY for PSPP; type \"show "
 	 "warranty.\" for details.\n", stdout);
-  puts (stat_version);
-  journal_enable ();
+  puts (announced_version);
+  journal_init ();
 }
 
 static struct terminal_reader *
@@ -107,6 +101,42 @@ terminal_reader_cast (struct lex_reader *r)
   return UP_CAST (r, struct terminal_reader, reader);
 }
 
+
+/* Older libreadline versions do not provide rl_outstream.
+   However, it is almost always going to be the same as stdout. */
+#if ! HAVE_RL_OUTSTREAM
+# define rl_outstream stdout
+#endif
+
+
+#if HAVE_READLINE
+/* Similarly, rl_echo_signal_char is fairly recent.
+   We provide our own crude version if it is not present. */
+#if ! HAVE_RL_ECHO_SIGNAL_CHAR
+static void
+rl_echo_signal_char (int sig)
+{
+#if HAVE_TERMIOS_H
+  struct termios t;
+  if (0 == tcgetattr (0, &t))
+    {
+      cc_t c = t.c_cc[VINTR];
+
+      if (c >= 0  && c <= 'Z' - 'A')
+	fprintf (rl_outstream, "^%c", 'A' + c - 1);
+      else
+	fprintf (rl_outstream, "%c", c);
+    }
+  else
+#endif
+    fprintf (rl_outstream, "^C");
+
+  fflush (rl_outstream);
+}
+#endif
+#endif
+
+
 static size_t
 terminal_reader_read (struct lex_reader *r_, char *buf, size_t n,
                       enum prompt_style prompt_style)
@@ -177,7 +207,7 @@ terminal_reader_create (void)
   r = xzalloc (sizeof *r);
   r->reader.class = &terminal_reader_class;
   r->reader.syntax = LEX_SYNTAX_INTERACTIVE;
-  r->reader.error = LEX_ERROR_INTERACTIVE;
+  r->reader.error = LEX_ERROR_TERMINAL;
   r->reader.file_name = NULL;
   r->s = ss_empty ();
   r->offset = 0;
@@ -215,21 +245,12 @@ readline_prompt (enum prompt_style style)
 }
 
 
+#if HAVE_READLINE
 
 static int pfd[2];
 static bool sigint_received ;
 
-static void 
-handler (int sig)
-{
-  rl_end = 0;
-
-  write (pfd[1], "x", 1);
-  rl_echo_signal_char (sig);
-}
-
-
-/* 
+/*
    A function similar to getc from stdio.
    However this one may be interrupted by SIGINT.
    If that happens it will return EOF and the global variable
@@ -279,9 +300,15 @@ interruptible_getc (FILE *fp)
   return c;
 }
 
+static void
+handler (int sig)
+{
+  rl_end = 0;
 
+  write (pfd[1], "x", 1);
+  rl_echo_signal_char (sig);
+}
 
-#if HAVE_READLINE
 
 static void
 readline_init (void)
@@ -317,7 +344,7 @@ readline_done (void)
   free (history_file);
 }
 
-/* Prompt the user for a line of input and return it in LINE. 
+/* Prompt the user for a line of input and return it in LINE.
    Returns true if the LINE should be considered valid, false otherwise.
  */
 static bool
@@ -417,9 +444,9 @@ readline_read (struct substring *line, enum prompt_style style)
   fflush (stdout);
   ds_init_empty (&string);
   ds_read_line (&string, stdin, SIZE_MAX);
-  
+
   *line = string.ss;
-  
+
   return false;
 }
 #endif /* !HAVE_READLINE */