1 files changed, 591 insertions, 0 deletions

diff --git a/scripts/kconfig/libcurses/getch.c b/scripts/kconfig/libcurses/getch.c
new file mode 100644
index 000000000..9d771ec0e
--- /dev/null
+++ b/scripts/kconfig/libcurses/getch.c
@@ -0,0 +1,591 @@
+/* PDCurses */
+
+#include "curspriv.h"
+
+/*man-start**************************************************************
+
+getch
+-----
+
+### Synopsis
+
+    int getch(void);
+    int wgetch(WINDOW *win);
+    int mvgetch(int y, int x);
+    int mvwgetch(WINDOW *win, int y, int x);
+    int ungetch(int ch);
+    int flushinp(void);
+
+    int get_wch(wint_t *wch);
+    int wget_wch(WINDOW *win, wint_t *wch);
+    int mvget_wch(int y, int x, wint_t *wch);
+    int mvwget_wch(WINDOW *win, int y, int x, wint_t *wch);
+    int unget_wch(const wchar_t wch);
+
+    unsigned long PDC_get_key_modifiers(void);
+    int PDC_return_key_modifiers(bool flag);
+
+### Description
+
+   With the getch(), wgetch(), mvgetch(), and mvwgetch() functions, a
+   character is read from the terminal associated with the window. In
+   nodelay mode, if there is no input waiting, the value ERR is
+   returned. In delay mode, the program will hang until the system
+   passes text through to the program. Depending on the setting of
+   cbreak(), this will be after one character or after the first
+   newline. Unless noecho() has been set, the character will also be
+   echoed into the designated window.
+
+   If keypad() is TRUE, and a function key is pressed, the token for
+   that function key will be returned instead of the raw characters.
+   Possible function keys are defined in "curses.h" with integers
+   beginning with 0401, whose names begin with KEY_.
+
+   If nodelay(win, TRUE) has been called on the window and no input is
+   waiting, the value ERR is returned.
+
+   ungetch() places ch back onto the input queue to be returned by the
+   next call to wgetch().
+
+   flushinp() throws away any type-ahead that has been typed by the user
+   and has not yet been read by the program.
+
+   wget_wch() is the wide-character version of wgetch(), available when
+   PDCurses is built with the PDC_WIDE option. It takes a pointer to a
+   wint_t rather than returning the key as an int, and instead returns
+   KEY_CODE_YES if the key is a function key. Otherwise, it returns OK
+   or ERR. It's important to check for KEY_CODE_YES, since regular wide
+   characters can have the same values as function key codes.
+
+   unget_wch() puts a wide character on the input queue.
+
+   PDC_get_key_modifiers() returns the keyboard modifiers (shift,
+   control, alt, numlock) effective at the time of the last getch()
+   call. Use the macros PDC_KEY_MODIFIER_* to determine which
+   modifier(s) were set. PDC_return_key_modifiers() tells getch() to
+   return modifier keys pressed alone as keystrokes (KEY_ALT_L, etc.).
+   These may not work on all platforms.
+
+   NOTE: getch() and ungetch() are implemented as macros, to avoid
+   conflict with many DOS compiler's runtime libraries.
+
+### Return Value
+
+   These functions return ERR or the value of the character, meta
+   character or function key token.
+
+### Portability
+
+   Function              | X/Open | ncurses | NetBSD
+   :---------------------|:------:|:-------:|:------:
+   getch                 |    Y   |    Y    |   Y
+   wgetch                |    Y   |    Y    |   Y
+   mvgetch               |    Y   |    Y    |   Y
+   mvwgetch              |    Y   |    Y    |   Y
+   ungetch               |    Y   |    Y    |   Y
+   flushinp              |    Y   |    Y    |   Y
+   get_wch               |    Y   |    Y    |   Y
+   wget_wch              |    Y   |    Y    |   Y
+   mvget_wch             |    Y   |    Y    |   Y
+   mvwget_wch            |    Y   |    Y    |   Y
+   unget_wch             |    Y   |    Y    |   Y
+   PDC_get_key_modifiers |    -   |    -    |   -
+
+**man-end****************************************************************/
+
+#include <stdlib.h>
+
+static int _get_box(int *y_start, int *y_end, int *x_start, int *x_end)
+{
+    int start, end;
+
+    if (SP->sel_start < SP->sel_end)
+    {
+        start = SP->sel_start;
+        end = SP->sel_end;
+    }
+    else
+    {
+        start = SP->sel_end;
+        end = SP->sel_start;
+    }
+
+    *y_start = start / COLS;
+    *x_start = start % COLS;
+
+    *y_end = end / COLS;
+    *x_end = end % COLS;
+
+    return (end - start) + (*y_end - *y_start);
+}
+
+static void _highlight(void)
+{
+    int i, j, y_start, y_end, x_start, x_end;
+
+    if (-1 == SP->sel_start)
+        return;
+
+    _get_box(&y_start, &y_end, &x_start, &x_end);
+
+    for (j = y_start; j <= y_end; j++)
+        for (i = (j == y_start ? x_start : 0);
+             i < (j == y_end ? x_end : COLS); i++)
+            curscr->_y[j][i] ^= A_REVERSE;
+
+    wrefresh(curscr);
+}
+
+static void _copy(void)
+{
+#ifdef PDC_WIDE
+    wchar_t *wtmp;
+# define TMP wtmp
+# define MASK A_CHARTEXT
+#else
+# define TMP tmp
+# define MASK 0xff
+#endif
+    char *tmp;
+    long pos;
+    int i, j, y_start, y_end, x_start, x_end, len;
+
+    if (-1 == SP->sel_start)
+        return;
+
+    len = _get_box(&y_start, &y_end, &x_start, &x_end);
+
+    if (!len)
+        return;
+
+#ifdef PDC_WIDE
+    wtmp = malloc((len + 1) * sizeof(wchar_t));
+    len *= 4;
+#endif
+    tmp = malloc(len + 1);
+
+    for (j = y_start, pos = 0; j <= y_end; j++)
+    {
+        for (i = (j == y_start ? x_start : 0);
+             i < (j == y_end ? x_end : COLS); i++)
+            TMP[pos++] = curscr->_y[j][i] & MASK;
+
+        while (y_start != y_end && pos > 0 && TMP[pos - 1] == 32)
+            pos--;
+
+        if (j < y_end)
+            TMP[pos++] = 10;
+    }
+    TMP[pos] = 0;
+
+#ifdef PDC_WIDE
+    pos = PDC_wcstombs(tmp, wtmp, len);
+#endif
+
+    PDC_setclipboard(tmp, pos);
+    free(tmp);
+#ifdef PDC_WIDE
+    free(wtmp);
+#endif
+}
+
+static int _paste(void)
+{
+#ifdef PDC_WIDE
+    wchar_t *wpaste;
+# define PASTE wpaste
+#else
+# define PASTE paste
+#endif
+    char *paste;
+    long len, newmax;
+    int key;
+
+    key = PDC_getclipboard(&paste, &len);
+    if (PDC_CLIP_SUCCESS != key || !len)
+        return -1;
+
+#ifdef PDC_WIDE
+    wpaste = malloc(len * sizeof(wchar_t));
+    len = PDC_mbstowcs(wpaste, paste, len);
+#endif
+    newmax = len + SP->c_ungind;
+    if (newmax > SP->c_ungmax)
+    {
+        SP->c_ungch = realloc(SP->c_ungch, newmax * sizeof(int));
+        if (!SP->c_ungch)
+            return -1;
+        SP->c_ungmax = newmax;
+    }
+    while (len > 1)
+        PDC_ungetch(PASTE[--len]);
+    key = *PASTE;
+#ifdef PDC_WIDE
+    free(wpaste);
+#endif
+    PDC_freeclipboard(paste);
+    SP->key_modifiers = 0;
+
+    return key;
+}
+
+static int _mouse_key(void)
+{
+    int i, key = KEY_MOUSE, changes = SP->mouse_status.changes;
+    unsigned long mbe = SP->_trap_mbe;
+
+    /* Selection highlighting? */
+
+    if ((!mbe || SP->mouse_status.button[0] & BUTTON_SHIFT) && changes & 1)
+    {
+        i = SP->mouse_status.y * COLS + SP->mouse_status.x;
+        switch (SP->mouse_status.button[0] & BUTTON_ACTION_MASK)
+        {
+        case BUTTON_PRESSED:
+            _highlight();
+            SP->sel_start = SP->sel_end = i;
+            return -1;
+        case BUTTON_MOVED:
+            _highlight();
+            SP->sel_end = i;
+            _highlight();
+            return -1;
+        case BUTTON_RELEASED:
+            _copy();
+            return -1;
+        }
+    }
+    else if ((!mbe || SP->mouse_status.button[1] & BUTTON_SHIFT) &&
+             changes & 2 && (SP->mouse_status.button[1] &
+             BUTTON_ACTION_MASK) == BUTTON_CLICKED)
+    {
+        SP->key_code = FALSE;
+        return _paste();
+    }
+
+    /* Filter unwanted mouse events */
+
+    for (i = 0; i < 3; i++)
+    {
+        if (changes & (1 << i))
+        {
+            int shf = i * 5;
+            short button = SP->mouse_status.button[i] & BUTTON_ACTION_MASK;
+
+            if (   (!(mbe & (BUTTON1_PRESSED << shf)) &&
+                    (button == BUTTON_PRESSED))
+
+                || (!(mbe & (BUTTON1_CLICKED << shf)) &&
+                    (button == BUTTON_CLICKED))
+
+                || (!(mbe & (BUTTON1_DOUBLE_CLICKED << shf)) &&
+                    (button == BUTTON_DOUBLE_CLICKED))
+
+                || (!(mbe & (BUTTON1_MOVED << shf)) &&
+                    (button == BUTTON_MOVED))
+
+                || (!(mbe & (BUTTON1_RELEASED << shf)) &&
+                    (button == BUTTON_RELEASED))
+            )
+                SP->mouse_status.changes ^= (1 << i);
+        }
+    }
+
+    if (changes & PDC_MOUSE_MOVED)
+    {
+        if (!(mbe & (BUTTON1_MOVED|BUTTON2_MOVED|BUTTON3_MOVED)))
+            SP->mouse_status.changes ^= PDC_MOUSE_MOVED;
+    }
+
+    if (changes & (PDC_MOUSE_WHEEL_UP|PDC_MOUSE_WHEEL_DOWN))
+    {
+        if (!(mbe & MOUSE_WHEEL_SCROLL))
+            SP->mouse_status.changes &=
+                ~(PDC_MOUSE_WHEEL_UP|PDC_MOUSE_WHEEL_DOWN);
+    }
+
+    if (!changes)
+        return -1;
+
+    /* Check for click in slk area */
+
+    i = PDC_mouse_in_slk(SP->mouse_status.y, SP->mouse_status.x);
+
+    if (i)
+    {
+        if (SP->mouse_status.button[0] & (BUTTON_PRESSED|BUTTON_CLICKED))
+            key = KEY_F(i);
+        else
+            key = -1;
+    }
+
+    return key;
+}
+
+int wgetch(WINDOW *win)
+{
+    int key, waitcount;
+
+    PDC_LOG(("wgetch() - called\n"));
+
+    if (!win || !SP)
+        return ERR;
+
+    waitcount = 0;
+
+    /* set the number of 1/20th second napms() calls */
+
+    if (SP->delaytenths)
+        waitcount = 2 * SP->delaytenths;
+    else
+        if (win->_delayms)
+        {
+            /* Can't really do millisecond intervals, so delay in
+               1/20ths of a second (50ms) */
+
+            waitcount = win->_delayms / 50;
+            if (!waitcount)
+                waitcount = 1;
+        }
+
+    /* refresh window when wgetch is called if there have been changes
+       to it and it is not a pad */
+
+    if (!(win->_flags & _PAD) && ((!win->_leaveit &&
+         (win->_begx + win->_curx != SP->curscol ||
+          win->_begy + win->_cury != SP->cursrow)) || is_wintouched(win)))
+        wrefresh(win);
+
+    /* if ungotten char exists, remove and return it */
+
+    if (SP->c_ungind)
+        return SP->c_ungch[--(SP->c_ungind)];
+
+    /* if normal and data in buffer */
+
+    if ((!SP->raw_inp && !SP->cbreak) && (SP->c_gindex < SP->c_pindex))
+        return SP->c_buffer[SP->c_gindex++];
+
+    /* prepare to buffer data */
+
+    SP->c_pindex = 0;
+    SP->c_gindex = 0;
+
+    /* to get here, no keys are buffered. go and get one. */
+
+    for (;;)            /* loop for any buffering */
+    {
+        /* is there a keystroke ready? */
+
+        if (!PDC_check_key())
+        {
+            /* if not, handle timeout() and halfdelay() */
+
+            if (SP->delaytenths || win->_delayms)
+            {
+                if (!waitcount)
+                    return ERR;
+
+                waitcount--;
+            }
+            else
+                if (win->_nodelay)
+                    return ERR;
+
+            napms(50);  /* sleep for 1/20th second */
+            continue;   /* then check again */
+        }
+
+        /* if there is, fetch it */
+
+        key = PDC_get_key();
+
+        /* copy or paste? */
+
+        if (SP->key_modifiers & PDC_KEY_MODIFIER_SHIFT)
+        {
+            if (0x03 == key)
+            {
+                _copy();
+                continue;
+            }
+            else if (0x16 == key)
+                key = _paste();
+        }
+
+        /* filter mouse events; translate mouse clicks in the slk
+           area to function keys */
+
+        if (SP->key_code && key == KEY_MOUSE)
+            key = _mouse_key();
+
+        /* filter special keys if not in keypad mode */
+
+        if (SP->key_code && !win->_use_keypad)
+            key = -1;
+
+        /* unwanted key? loop back */
+
+        if (key == -1)
+            continue;
+
+        _highlight();
+        SP->sel_start = SP->sel_end = -1;
+
+        /* translate CR */
+
+        if (key == '\r' && SP->autocr && !SP->raw_inp)
+            key = '\n';
+
+        /* if echo is enabled */
+
+        if (SP->echo && !SP->key_code)
+        {
+            waddch(win, key);
+            wrefresh(win);
+        }
+
+        /* if no buffering */
+
+        if (SP->raw_inp || SP->cbreak)
+            return key;
+
+        /* if no overflow, put data in buffer */
+
+        if (key == '\b')
+        {
+            if (SP->c_pindex > SP->c_gindex)
+                SP->c_pindex--;
+        }
+        else
+            if (SP->c_pindex < _INBUFSIZ - 2)
+                SP->c_buffer[SP->c_pindex++] = key;
+
+        /* if we got a line */
+
+        if (key == '\n' || key == '\r')
+            return SP->c_buffer[SP->c_gindex++];
+    }
+}
+
+int mvgetch(int y, int x)
+{
+    PDC_LOG(("mvgetch() - called\n"));
+
+    if (move(y, x) == ERR)
+        return ERR;
+
+    return wgetch(stdscr);
+}
+
+int mvwgetch(WINDOW *win, int y, int x)
+{
+    PDC_LOG(("mvwgetch() - called\n"));
+
+    if (wmove(win, y, x) == ERR)
+        return ERR;
+
+    return wgetch(win);
+}
+
+int PDC_ungetch(int ch)
+{
+    PDC_LOG(("ungetch() - called\n"));
+
+    if (SP->c_ungind >= SP->c_ungmax)   /* pushback stack full */
+        return ERR;
+
+    SP->c_ungch[SP->c_ungind++] = ch;
+
+    return OK;
+}
+
+int flushinp(void)
+{
+    PDC_LOG(("flushinp() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    PDC_flushinp();
+
+    SP->c_gindex = 1;       /* set indices to kill buffer */
+    SP->c_pindex = 0;
+    SP->c_ungind = 0;       /* clear SP->c_ungch array */
+
+    return OK;
+}
+
+unsigned long PDC_get_key_modifiers(void)
+{
+    PDC_LOG(("PDC_get_key_modifiers() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    return SP->key_modifiers;
+}
+
+int PDC_return_key_modifiers(bool flag)
+{
+    PDC_LOG(("PDC_return_key_modifiers() - called\n"));
+
+    if (!SP)
+        return ERR;
+
+    SP->return_key_modifiers = flag;
+    return PDC_modifiers_set();
+}
+
+#ifdef PDC_WIDE
+int wget_wch(WINDOW *win, wint_t *wch)
+{
+    int key;
+
+    PDC_LOG(("wget_wch() - called\n"));
+
+    if (!wch)
+        return ERR;
+
+    key = wgetch(win);
+
+    if (key == ERR)
+        return ERR;
+
+    *wch = key;
+
+    return SP->key_code ? KEY_CODE_YES : OK;
+}
+
+int get_wch(wint_t *wch)
+{
+    PDC_LOG(("get_wch() - called\n"));
+
+    return wget_wch(stdscr, wch);
+}
+
+int mvget_wch(int y, int x, wint_t *wch)
+{
+    PDC_LOG(("mvget_wch() - called\n"));
+
+    if (move(y, x) == ERR)
+        return ERR;
+
+    return wget_wch(stdscr, wch);
+}
+
+int mvwget_wch(WINDOW *win, int y, int x, wint_t *wch)
+{
+    PDC_LOG(("mvwget_wch() - called\n"));
+
+    if (wmove(win, y, x) == ERR)
+        return ERR;
+
+    return wget_wch(win, wch);
+}
+
+int unget_wch(const wchar_t wch)
+{
+    return PDC_ungetch(wch);
+}
+#endif