ncurses 5.9 - patch 20121026
[ncurses.git] / ncurses / base / lib_insch.c
index 419c9a8b145ec98cf59534798abcd15c73b0c0b1..e21ec02bc84f30d5b2821d453a66ed9f47c305a1 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2001,2002 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            *
 #include <curses.priv.h>
 #include <ctype.h>
 
-MODULE_ID("$Id: lib_insch.c,v 1.18 2002/11/23 21:41:05 tom Exp $")
+MODULE_ID("$Id: lib_insch.c,v 1.32 2009/10/24 22:04:35 tom Exp $")
 
 /*
  * Insert the given character, updating the current location to simplify
  * inserting a string.
  */
-void
-_nc_insert_ch(WINDOW *win, chtype ch)
+NCURSES_EXPORT(int)
+_nc_insert_ch(SCREEN *sp, WINDOW *win, chtype ch)
 {
+    int code = OK;
     NCURSES_CH_T wch;
     int count;
+    NCURSES_CONST char *s;
+    int tabsize = (
+#if USE_REENTRANT
+                     sp->_TABSIZE
+#else
+                     TABSIZE
+#endif
+    );
 
     switch (ch) {
     case '\t':
-       for (count = (TABSIZE - (win->_curx % TABSIZE)); count > 0; count--)
-           _nc_insert_ch(win, ' ');
+       for (count = (tabsize - (win->_curx % tabsize)); count > 0; count--) {
+           if ((code = _nc_insert_ch(sp, win, ' ')) != OK)
+               break;
+       }
        break;
     case '\n':
     case '\r':
@@ -67,27 +78,72 @@ _nc_insert_ch(WINDOW *win, chtype ch)
        _nc_waddch_nosync(win, wch);
        break;
     default:
-       if (is7bits(ch) && iscntrl(ch)) {
-           _nc_insert_ch(win, '^');
-           _nc_insert_ch(win, '@' + (ch));
-       } else 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;
-
+       if (
+#if USE_WIDEC_SUPPORT
+              WINDOW_EXT(win, addch_used) == 0 &&
+#endif
+              is8bits(ChCharOf(ch)) &&
+              (isprint(ChCharOf(ch)) ||
+               (ChAttrOf(ch) & A_ALTCHARSET) ||
+               (sp != 0 && sp->_legacy_coding && !iscntrl(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 = NCURSES_SP_NAME(unctrl) (NCURSES_SP_ARGx ChCharOf(ch));
+           while (*s != '\0') {
+               code = _nc_insert_ch(sp, win, ChAttrOf(ch) | UChar(*s));
+               if (code != OK)
+                   break;
+               ++s;
+           }
+       }
+#if USE_WIDEC_SUPPORT
+       else {
+           /*
+            * Handle multibyte characters here
+            */
            SetChar2(wch, ch);
-
-           CHANGED_TO_EOL(line, win->_curx, win->_maxx);
-           while (temp1 > end)
-               *temp1-- = *temp2--;
-
-           *temp1 = _nc_render(win, wch);
-
-           win->_curx++;
+           wch = _nc_render(win, wch);
+           count = _nc_build_wch(win, &wch);
+           if (count > 0) {
+               code = _nc_insert_wch(win, &wch);
+           } else if (count == -1) {
+               /* handle EILSEQ */
+               if (is8bits(ch)) {
+                   s = NCURSES_SP_NAME(unctrl) (NCURSES_SP_ARGx ChCharOf(ch));
+                   if (strlen(s) > 1) {
+                       while (*s != '\0') {
+                           code = _nc_insert_ch(sp, win,
+                                                ChAttrOf(ch) | UChar(*s));
+                           if (code != OK)
+                               break;
+                           ++s;
+                       }
+                   } else {
+                       code = ERR;
+                   }
+               } else {
+                   code = ERR;
+               }
+           }
        }
+#endif
        break;
     }
+    return code;
 }
 
 NCURSES_EXPORT(int)
@@ -97,43 +153,17 @@ winsch(WINDOW *win, chtype c)
     NCURSES_SIZE_T ox;
     int code = ERR;
 
-    T((T_CALLED("winsch(%p, %s)"), win, _tracechtype(c)));
+    T((T_CALLED("winsch(%p, %s)"), (void *) win, _tracechtype(c)));
 
     if (win != 0) {
        oy = win->_cury;
        ox = win->_curx;
 
-       _nc_insert_ch(win, c);
-
-       win->_curx = ox;
-       win->_cury = oy;
-       _nc_synchook(win);
-       code = OK;
-    }
-    returnCode(code);
-}
-
-NCURSES_EXPORT(int)
-winsnstr(WINDOW *win, const char *s, int n)
-{
-    int code = ERR;
-    NCURSES_SIZE_T oy;
-    NCURSES_SIZE_T ox;
-    const unsigned char *str = (const unsigned char *) s;
-    const unsigned char *cp;
-
-    T((T_CALLED("winsnstr(%p,%s,%d)"), win, _nc_visbufn(s, n), n));
+       code = _nc_insert_ch(_nc_screen_of(win), win, c);
 
-    if (win != 0 && str != 0) {
-       oy = win->_cury;
-       ox = win->_curx;
-       for (cp = str; *cp && (n <= 0 || (cp - str) < n); cp++) {
-           _nc_insert_ch(win, (chtype) UChar(*cp));
-       }
        win->_curx = ox;
        win->_cury = oy;
        _nc_synchook(win);
-       code = OK;
     }
     returnCode(code);
 }