Sync up with r21-4-17-chise-0_22-3.

[chise/xemacs-chise.git] / src / buffer.c

diff --git a/src/buffer.c b/src/buffer.c
index bd44a47..2487541 100644 (file)
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -2,6 +2,7 @@
    Copyright (C) 1985-1989, 1992-1995 Free Software Foundation, Inc.
    Copyright (C) 1995 Sun Microsystems, Inc.
    Copyright (C) 1995, 1996 Ben Wing.
+   Copyright (C) 1999,2000,2001 MORIOKA Tomohiko
 
 This file is part of XEmacs.
 
@@ -29,6 +30,7 @@ Boston, MA 02111-1307, USA.  */
         list per frame.)
    Mly: a few changes for buffer-local vars, 19.8 or 19.9.
    Ben Wing: some changes and cleanups for Mule, 19.12.
+   MORIOKA Tomohiko: some changes for XEmacs UTF-2000.
  */
 
 /* This file contains functions that work with buffer objects.
@@ -522,7 +524,7 @@ delete_from_buffer_alist (Lisp_Object buf)
   Lisp_Object cons = Frassq (buf, Vbuffer_alist);
   Lisp_Object frmcons, devcons, concons;
   if (NILP (cons))
-    return; /* abort() ? */
+    return; /* ABORT() ? */
   Vbuffer_alist = delq_no_quit (cons, Vbuffer_alist);
 
   FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
@@ -1334,38 +1336,60 @@ buffer.  See `other-buffer' for more information.
 {
   REGISTER Lisp_Object lynk, prev;
   struct frame *f = selected_frame ();
+  int buffer_found = 0;
 
+  CHECK_BUFFER (buffer);
+  if (!BUFFER_LIVE_P (XBUFFER (buffer)))
+    return Qnil;
   prev = Qnil;
   for (lynk = Vbuffer_alist; CONSP (lynk); lynk = XCDR (lynk))
     {
       if (EQ (XCDR (XCAR (lynk)), buffer))
-       break;
+       {
+         buffer_found = 1;
+         break;
+       }
       prev = lynk;
     }
-  /* Effectively do Vbuffer_alist = delq_no_quit (lynk, Vbuffer_alist) */
-  if (NILP (prev))
-    Vbuffer_alist = XCDR (Vbuffer_alist);
+  if (buffer_found)
+    {
+      /* Effectively do Vbuffer_alist = delq_no_quit (lynk, Vbuffer_alist) */
+      if (NILP (prev))
+       Vbuffer_alist = XCDR (Vbuffer_alist);
+      else
+       XCDR (prev) = XCDR (XCDR (prev));
+      XCDR (lynk) = Vbuffer_alist;
+      Vbuffer_alist = lynk;
+    }
   else
-    XCDR (prev) = XCDR (XCDR (prev));
-  XCDR (lynk) = Vbuffer_alist;
-  Vbuffer_alist = lynk;
+    Vbuffer_alist = Fcons (Fcons (Fbuffer_name(buffer), buffer), Vbuffer_alist);
 
   /* That was the global one.  Now do the same thing for the
      per-frame buffer-alist. */
+  buffer_found = 0;
   prev = Qnil;
   for (lynk = f->buffer_alist; CONSP (lynk); lynk = XCDR (lynk))
     {
       if (EQ (XCDR (XCAR (lynk)), buffer))
-       break;
+       {
+         buffer_found = 1;
+         break;
+       }
       prev = lynk;
     }
-  /* Effectively do f->buffer_alist = delq_no_quit (lynk, f->buffer_alist) */
-  if (NILP (prev))
-    f->buffer_alist = XCDR (f->buffer_alist);
+  if (buffer_found)
+    {
+      /* Effectively do f->buffer_alist = delq_no_quit (lynk, f->buffer_alist) */
+      if (NILP (prev))
+       f->buffer_alist = XCDR (f->buffer_alist);
+      else
+       XCDR (prev) = XCDR (XCDR (prev));
+      XCDR (lynk) = f->buffer_alist;
+      f->buffer_alist = lynk;
+    }
   else
-    XCDR (prev) = XCDR (XCDR (prev));
-  XCDR (lynk) = f->buffer_alist;
-  f->buffer_alist = lynk;
+    f->buffer_alist = Fcons (Fcons (Fbuffer_name(buffer), buffer),
+                            f->buffer_alist);
 
   return Qnil;
 }
@@ -1861,11 +1885,17 @@ dfc_convert_to_external_format (dfc_conversion_type source_type,
        const Bufbyte *end;
        for (end = ptr + len; ptr < end;)
          {
+#ifdef UTF2000
+           Bufbyte c =
+             (*ptr < 0xc0) ? *ptr :
+             ((*ptr & 0x1f) << 6) | (*(ptr+1) & 0x3f);
+#else
            Bufbyte c =
              (BYTE_ASCII_P (*ptr))                ? *ptr :
              (*ptr == LEADING_BYTE_CONTROL_1)     ? (*(ptr+1) - 0x20) :
              (*ptr == LEADING_BYTE_LATIN_ISO8859_1) ? (*(ptr+1)) :
              '~';
+#endif
 
            Dynarr_add (conversion_out_dynarr, (Extbyte) c);
            INC_CHARPTR (ptr);
@@ -2001,6 +2031,15 @@ dfc_convert_to_internal_format (dfc_conversion_type source_type,
         {
           Bufbyte c = *ptr;
 
+#ifdef UTF2000
+         if (BYTE_ASCII_P (c))
+           Dynarr_add (conversion_in_dynarr, c);
+         else
+           {
+             Dynarr_add (conversion_in_dynarr, (c >> 6) | 0xC0);
+             Dynarr_add (conversion_in_dynarr, (c & 0x3F) | 0x80);
+           }
+#else
          if (BYTE_ASCII_P (c))
            Dynarr_add (conversion_in_dynarr, c);
          else if (BYTE_C1_P (c))
@@ -2013,6 +2052,7 @@ dfc_convert_to_internal_format (dfc_conversion_type source_type,
              Dynarr_add (conversion_in_dynarr, LEADING_BYTE_LATIN_ISO8859_1);
              Dynarr_add (conversion_in_dynarr, c);
            }
+#endif
         }
 #else
       Dynarr_add_many (conversion_in_dynarr, source->data.ptr, source->data.len);
@@ -2418,8 +2458,10 @@ common_init_complex_vars_of_buffer (void)
   defs->category_table = Vstandard_category_table;
 #endif /* MULE */
   defs->syntax_table = Vstandard_syntax_table;
+#ifndef UTF2000
   defs->mirror_syntax_table =
     XCHAR_TABLE (Vstandard_syntax_table)->mirror_table;
+#endif
   defs->modeline_format = build_string ("%-");  /* reset in loaddefs.el */
   defs->case_fold_search = Qt;
   defs->selective_display_ellipses = Qt;
@@ -3029,7 +3071,7 @@ handled:
   if ((XINT (buffer_local_flags.slot) != -2 &&                 \
        XINT (buffer_local_flags.slot) != -3)                   \
       != !(NILP (XBUFFER (Vbuffer_local_symbols)->slot)))      \
-  abort ()
+  ABORT ()
 #include "bufslots.h"
 #undef MARKED_SLOT