+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.
+ */
+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--) {
+ if ((code = _nc_insert_ch(sp, 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)) ||
+ (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);
+ 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;
+}