1 files changed, 299 insertions, 0 deletions

diff --git a/scripts/kconfig/libcurses/kernel.c b/scripts/kconfig/libcurses/kernel.c
new file mode 100644
index 000000000..0f5a73c21
--- /dev/null
+++ b/scripts/kconfig/libcurses/kernel.c
@@ -0,0 +1,299 @@
+/* PDCurses */
+
+#include "curspriv.h"
+
+/*man-start**************************************************************
+
+kernel
+------
+
+### Synopsis
+
+    int def_prog_mode(void);
+    int def_shell_mode(void);
+    int reset_prog_mode(void);
+    int reset_shell_mode(void);
+    int resetty(void);
+    int savetty(void);
+    int ripoffline(int line, int (*init)(WINDOW *, int));
+    int curs_set(int visibility);
+    int napms(int ms);
+
+    int draino(int ms);
+    int resetterm(void);
+    int fixterm(void);
+    int saveterm(void);
+
+### Description
+
+   def_prog_mode() and def_shell_mode() save the current terminal modes
+   as the "program" (in curses) or "shell" (not in curses) state for use
+   by the reset_prog_mode() and reset_shell_mode() functions. This is
+   done automatically by initscr().
+
+   reset_prog_mode() and reset_shell_mode() restore the terminal to
+   "program" (in curses) or "shell" (not in curses) state. These are
+   done automatically by endwin() and doupdate() after an endwin(), so
+   they would normally not be called before these functions.
+
+   savetty() and resetty() save and restore the state of the terminal
+   modes. savetty() saves the current state in a buffer, and resetty()
+   restores the state to what it was at the last call to savetty().
+
+   curs_set() alters the appearance of the cursor. A visibility of 0
+   makes it disappear; 1 makes it appear "normal" (usually an underline)
+   and 2 makes it "highly visible" (usually a block).
+
+   ripoffline() reduces the size of stdscr by one line. If the "line"
+   parameter is positive, the line is removed from the top of the
+   screen; if negative, from the bottom. Up to 5 lines can be ripped off
+   stdscr by calling ripoffline() repeatedly. The function argument,
+   init, is called from within initscr() or newterm(), so ripoffline()
+   must be called before either of these functions. The init function
+   receives a pointer to a one-line WINDOW, and the width of the window.
+   Calling ripoffline() with a NULL init function pointer is an error.
+
+   napms() suspends the program for the specified number of
+   milliseconds. draino() is an archaic equivalent. Note that since
+   napms() attempts to give up a time slice and yield control back to
+   the OS, all times are approximate. (In DOS, the delay is actually
+   rounded down to 50ms (1/20th sec) intervals, with a minimum of one
+   interval; i.e., 1-99 will wait 50ms, 100-149 will wait 100ms, etc.)
+   0 returns immediately.
+
+   resetterm(), fixterm() and saveterm() are archaic equivalents for
+   reset_shell_mode(), reset_prog_mode() and def_prog_mode(),
+   respectively.
+
+### Return Value
+
+   All functions return OK on success and ERR on error, except
+   curs_set(), which returns the previous visibility.
+
+### Portability
+
+   Function              | X/Open | ncurses | NetBSD
+   :---------------------|:------:|:-------:|:------:
+   def_prog_mode         |    Y   |    Y    |   Y
+   def_shell_mode        |    Y   |    Y    |   Y
+   reset_prog_mode       |    Y   |    Y    |   Y
+   reset_shell_mode      |    Y   |    Y    |   Y
+   resetty               |    Y   |    Y    |   Y
+   savetty               |    Y   |    Y    |   Y
+   ripoffline            |    Y   |    Y    |   Y
+   curs_set              |    Y   |    Y    |   Y
+   napms                 |    Y   |    Y    |   Y
+   fixterm               |    -   |    Y    |   -
+   resetterm             |    -   |    Y    |   -
+   saveterm              |    -   |    Y    |   -
+   draino                |    -   |    -    |   -
+
+**man-end****************************************************************/
+
+#include <string.h>
+
+RIPPEDOFFLINE linesripped[5];
+char linesrippedoff = 0;
+
+static struct cttyset
+{
+    bool been_set;
+    SCREEN saved;
+} ctty[3];
+
+enum { PDC_SH_TTY, PDC_PR_TTY, PDC_SAVE_TTY };
+
+static void _save_mode(int i)
+{
+    ctty[i].been_set = TRUE;
+
+    memcpy(&(ctty[i].saved), SP, sizeof(SCREEN));
+
+    PDC_save_screen_mode(i);
+}
+
+static int _restore_mode(int i)
+{
+    if (ctty[i].been_set == TRUE)
+    {
+        memcpy(SP, &(ctty[i].saved), sizeof(SCREEN));
+
+        if (ctty[i].saved.raw_out)
+            raw();
+
+        PDC_restore_screen_mode(i);
+
+        if ((LINES != ctty[i].saved.lines) ||
+            (COLS != ctty[i].saved.cols))
+            resize_term(ctty[i].saved.lines, ctty[i].saved.cols);
+
+        PDC_curs_set(ctty[i].saved.visibility);
+
+        PDC_gotoyx(ctty[i].saved.cursrow, ctty[i].saved.curscol);
+    }
+
+    return ctty[i].been_set ? OK : ERR;
+}
+
+int def_prog_mode(void)
+{
+    PDC_LOG(("def_prog_mode() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    _save_mode(PDC_PR_TTY);
+
+    return OK;
+}
+
+int def_shell_mode(void)
+{
+    PDC_LOG(("def_shell_mode() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    _save_mode(PDC_SH_TTY);
+
+    return OK;
+}
+
+int reset_prog_mode(void)
+{
+    PDC_LOG(("reset_prog_mode() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    _restore_mode(PDC_PR_TTY);
+    PDC_reset_prog_mode();
+
+    return OK;
+}
+
+int reset_shell_mode(void)
+{
+    PDC_LOG(("reset_shell_mode() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    _restore_mode(PDC_SH_TTY);
+    PDC_reset_shell_mode();
+
+    return OK;
+}
+
+int resetty(void)
+{
+    PDC_LOG(("resetty() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    return _restore_mode(PDC_SAVE_TTY);
+}
+
+int savetty(void)
+{
+    PDC_LOG(("savetty() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    _save_mode(PDC_SAVE_TTY);
+
+    return OK;
+}
+
+int curs_set(int visibility)
+{
+    int ret_vis;
+
+    PDC_LOG(("curs_set() - called: visibility=%d\n", visibility));
+
+    if (!SP || visibility < 0 || visibility > 2)
+        return ERR;
+
+    ret_vis = PDC_curs_set(visibility);
+
+    /* If the cursor is changing from invisible to visible, update
+       its position */
+
+    if (visibility && !ret_vis)
+        PDC_gotoyx(SP->cursrow, SP->curscol);
+
+    return ret_vis;
+}
+
+int napms(int ms)
+{
+    PDC_LOG(("napms() - called: ms=%d\n", ms));
+
+    if (!SP)
+        return ERR;
+
+    if (SP->dirty)
+    {
+        int curs_state = SP->visibility;
+        bool leave_state = is_leaveok(curscr);
+
+        SP->dirty = FALSE;
+
+        leaveok(curscr, TRUE);
+
+        wrefresh(curscr);
+
+        leaveok(curscr, leave_state);
+        curs_set(curs_state);
+    }
+
+    if (ms)
+        PDC_napms(ms);
+
+    return OK;
+}
+
+int ripoffline(int line, int (*init)(WINDOW *, int))
+{
+    PDC_LOG(("ripoffline() - called: line=%d\n", line));
+
+    if (linesrippedoff < 5 && line && init)
+    {
+        linesripped[(int)linesrippedoff].line = line;
+        linesripped[(int)linesrippedoff++].init = init;
+
+        return OK;
+    }
+
+    return ERR;
+}
+
+int draino(int ms)
+{
+    PDC_LOG(("draino() - called\n"));
+
+    return napms(ms);
+}
+
+int resetterm(void)
+{
+    PDC_LOG(("resetterm() - called\n"));
+
+    return reset_shell_mode();
+}
+
+int fixterm(void)
+{
+    PDC_LOG(("fixterm() - called\n"));
+
+    return reset_prog_mode();
+}
+
+int saveterm(void)
+{
+    PDC_LOG(("saveterm() - called\n"));
+
+    return def_prog_mode();
+}