ncurses 5.7 - patch 20090510

[ncurses.git] / ncurses / tinfo / lib_acs.c

diff --git a/ncurses/tinfo/lib_acs.c b/ncurses/tinfo/lib_acs.c
index 745b055ec32100f650de9430669db8520b407175..d0bec27c73a3c7d76ded1e7236afc438ec8ea5ae 100644 (file)
--- a/ncurses/tinfo/lib_acs.c
+++ b/ncurses/tinfo/lib_acs.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2002,2004 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -35,19 +35,24 @@
 #include <curses.priv.h>
 #include <term.h>              /* ena_acs, acs_chars */
 
-MODULE_ID("$Id: lib_acs.c,v 1.27 2004/10/16 15:42:40 tom Exp $")
+#ifndef CUR
+#define CUR SP_TERMTYPE 
+#endif
+
+MODULE_ID("$Id: lib_acs.c,v 1.39 2009/05/10 00:48:29 tom Exp $")
 
-#if BROKEN_LINKER
-NCURSES_EXPORT_VAR(chtype *)
-_nc_acs_map(void)
+#if BROKEN_LINKER || USE_REENTRANT
+#define MyBuffer _nc_prescreen.real_acs_map
+NCURSES_EXPORT(chtype *)
+NCURSES_PUBLIC_VAR(acs_map) (void)
 {
-    static chtype *the_map = 0;
-    if (the_map == 0)
-       the_map = typeCalloc(chtype, ACS_LEN);
-    return the_map;
+    if (MyBuffer == 0)
+       MyBuffer = typeCalloc(chtype, ACS_LEN);
+    return MyBuffer;
 }
+#undef MyBuffer
 #else
-NCURSES_EXPORT_VAR(chtype) acs_map[ACS_LEN] =
+NCURSES_EXPORT_VAR (chtype) acs_map[ACS_LEN] =
 {
     0
 };
@@ -56,6 +61,9 @@ NCURSES_EXPORT_VAR(chtype) acs_map[ACS_LEN] =
 NCURSES_EXPORT(void)
 _nc_init_acs(void)
 {
+#if NCURSES_SP_FUNCS
+    SCREEN *sp = CURRENT_SCREEN;
+#endif
     chtype *fake_map = acs_map;
     chtype *real_map = SP != 0 ? SP->_acs_map : fake_map;
     int j;
@@ -71,7 +79,8 @@ _nc_init_acs(void)
        for (j = 1; j < ACS_LEN; ++j) {
            real_map[j] = 0;
            fake_map[j] = A_ALTCHARSET | j;
-           SP->_screen_acs_map[j] = FALSE;
+           if (SP)
+               SP->_screen_acs_map[j] = FALSE;
        }
     } else {
        for (j = 1; j < ACS_LEN; ++j) {
@@ -117,20 +126,36 @@ _nc_init_acs(void)
     real_map['|'] = '!';       /* should be not-equal */
     real_map['}'] = 'f';       /* should be pound-sterling symbol */
 
-#if !USE_WIDEC_SUPPORT
-    if (_nc_unicode_locale() && _nc_locale_breaks_acs()) {
-       acs_chars = NULL;
-       ena_acs = NULL;
-       enter_alt_charset_mode = NULL;
-       exit_alt_charset_mode = NULL;
-       set_attributes = NULL;
-    }
-#endif
-
     if (ena_acs != NULL) {
        TPUTS_TRACE("ena_acs");
        putp(ena_acs);
     }
+#if NCURSES_EXT_FUNCS
+    /*
+     * Linux console "supports" the "PC ROM" character set by the coincidence
+     * that smpch/rmpch and smacs/rmacs have the same values.  ncurses has
+     * no codepage support (see SCO Merge for an example).  Outside of the
+     * values defined in acsc, there are no definitions for the "PC ROM"
+     * character set (assumed by some applications to be codepage 437), but we
+     * allow those applications to use those codepoints.
+     *
+     * test/blue.c uses this feature.
+     */
+#define PCH_KLUDGE(a,b) (a != 0 && b != 0 && !strcmp(a,b))
+    if (PCH_KLUDGE(enter_pc_charset_mode, enter_alt_charset_mode) &&
+       PCH_KLUDGE(exit_pc_charset_mode, exit_alt_charset_mode)) {
+       size_t i;
+       for (i = 1; i < ACS_LEN; ++i) {
+           if (real_map[i] == 0) {
+               real_map[i] = i;
+               if (real_map != fake_map) {
+                   if (SP != 0)
+                       SP->_screen_acs_map[i] = TRUE;
+               }
+           }
+       }
+    }
+#endif
 
     if (acs_chars != NULL) {
        size_t i = 0;
@@ -149,13 +174,13 @@ _nc_init_acs(void)
     /* Show the equivalent mapping, noting if it does not match the
      * given attribute, whether by re-ordering or duplication.
      */
-    if (_nc_tracing & TRACE_CALLS) {
+    if (USE_TRACEF(TRACE_CALLS)) {
        size_t n, m;
-       char show[ACS_LEN + 1];
+       char show[ACS_LEN * 2 + 1];
        for (n = 1, m = 0; n < ACS_LEN; n++) {
            if (real_map[n] != 0) {
                show[m++] = (char) n;
-               show[m++] = ChCharOf(real_map[n]);
+               show[m++] = (char) ChCharOf(real_map[n]);
            }
        }
        show[m] = 0;
@@ -170,6 +195,7 @@ _nc_init_acs(void)
                   ? "DIFF"
                   : "SAME"),
                _nc_visbuf(show));
+       _nc_unlock_global(tracef);
     }
 #endif /* TRACE */
 }