ncurses 5.6 - patch 20071222

[ncurses.git] / ncurses / base / lib_insch.c

diff --git a/ncurses/base/lib_insch.c b/ncurses/base/lib_insch.c
index c3671e5d235bffbdd6492aac3349b0ff513e9417..b8a856df3a82fc9c0c157b437ab2e8439338727c 100644 (file)
--- a/ncurses/base/lib_insch.c
+++ b/ncurses/base/lib_insch.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998,2000,2001 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2004,2005 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            *
@@ -29,6 +29,8 @@
 /****************************************************************************
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ *     and: Sven Verdoolaege                                                *
+ *     and: Thomas E. Dickey                                                *
  ****************************************************************************/
 
 /*
@@ -39,30 +41,99 @@
 */
 
 #include <curses.priv.h>
+#include <ctype.h>
 
-MODULE_ID("$Id: lib_insch.c,v 1.15 2001/06/09 23:47:38 skimo Exp $")
+MODULE_ID("$Id: lib_insch.c,v 1.24 2005/02/26 19:27:28 tom Exp $")
+
+/*
+ * Insert the given character, updating the current location to simplify
+ * inserting a string.
+ */
+NCURSES_EXPORT(int)
+_nc_insert_ch(WINDOW *win, chtype ch)
+{
+    int code = OK;
+    NCURSES_CH_T wch;
+    int count;
+    NCURSES_CONST char *s;
+
+    switch (ch) {
+    case '\t':
+       for (count = (TABSIZE - (win->_curx % TABSIZE)); count > 0; count--) {
+           if ((code = _nc_insert_ch(win, ' ')) != OK)
+               break;
+       }
+       break;
+    case '\n':
+    case '\r':
+    case '\b':
+       SetChar2(wch, ch);
+       _nc_waddch_nosync(win, wch);
+       break;
+    default:
+       if (
+#if USE_WIDEC_SUPPORT
+              WINDOW_EXT(win, addch_used) == 0 &&
+#endif
+              is8bits(ChCharOf(ch)) &&
+              isprint(ChCharOf(ch))) {
+           if (win->_curx <= win->_maxx) {
+               struct ldat *line = &(win->_line[win->_cury]);
+               NCURSES_CH_T *end = &(line->text[win->_curx]);
+               NCURSES_CH_T *temp1 = &(line->text[win->_maxx]);
+               NCURSES_CH_T *temp2 = temp1 - 1;
+
+               SetChar2(wch, ch);
+
+               CHANGED_TO_EOL(line, win->_curx, win->_maxx);
+               while (temp1 > end)
+                   *temp1-- = *temp2--;
+
+               *temp1 = _nc_render(win, wch);
+               win->_curx++;
+           }
+       } else if (is8bits(ChCharOf(ch)) && iscntrl(ChCharOf(ch))) {
+           s = unctrl(ChCharOf(ch));
+           while (*s != '\0') {
+               if ((code = _nc_insert_ch(win, ChAttrOf(ch) | UChar(*s))) != OK)
+                   break;
+               ++s;
+           }
+       }
+#if USE_WIDEC_SUPPORT
+       else {
+           /*
+            * Handle multibyte characters here
+            */
+           SetChar2(wch, ch);
+           wch = _nc_render(win, wch);
+           if (_nc_build_wch(win, &wch) >= 0)
+               code = wins_wch(win, &wch);
+       }
+#endif
+       break;
+    }
+    return code;
+}
 
 NCURSES_EXPORT(int)
 winsch(WINDOW *win, chtype c)
 {
+    NCURSES_SIZE_T oy;
+    NCURSES_SIZE_T ox;
     int code = ERR;
 
     T((T_CALLED("winsch(%p, %s)"), win, _tracechtype(c)));
 
-    if (win) {
-       struct ldat *line = &(win->_line[win->_cury]);
-       NCURSES_CH_T *end = &(line->text[win->_curx]);
-       NCURSES_CH_T *temp1 = &(line->text[win->_maxx]);
-       NCURSES_CH_T *temp2 = temp1 - 1;
-       NCURSES_CH_T wch;
-       SetChar2(wch, c);
+    if (win != 0) {
+       oy = win->_cury;
+       ox = win->_curx;
 
-       CHANGED_TO_EOL(line, win->_curx, win->_maxx);
-       while (temp1 > end)
-           *temp1-- = *temp2--;
+       code = _nc_insert_ch(win, c);
 
-       *temp1 = _nc_render(win, wch);
-       code = OK;
+       win->_curx = ox;
+       win->_cury = oy;
+       _nc_synchook(win);
     }
     returnCode(code);
 }