102 lines
1.8 KiB
C
102 lines
1.8 KiB
C
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#include <curses.h>
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#include <stddef.h>
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#include "core.h"
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/** @file
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*
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* MuCurses keyboard input handling functions
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*/
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#define INPUT_BUFFER_LEN 80
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bool echo_on = FALSE;
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bool delay = FALSE;
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/**
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*
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*/
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int has_key ( int ch ) {
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return TRUE;
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}
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/**
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* Push a character back onto the FIFO
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*
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* @v ch char to push to head of input stream
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* @ret rc return status code
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*/
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int ungetch ( int ch ) {
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stdscr->scr->pushc( stdscr->scr, ch );
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return OK;
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}
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/**
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* Pop a character from the FIFO into a window
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*
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* @v *win window in which to echo input
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* @ret ch char from input stream
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*/
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int wgetch ( WINDOW *win ) {
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int ch;
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if ( win == NULL )
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return ERR;
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ch = win->scr->popc( win->scr );
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if ( echo_on ) {
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if ( ch == KEY_LEFT || ch == KEY_BACKSPACE ) {
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if ( win->curs_x == 0 ) {
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wmove( win, --(win->curs_y), win->width - 1 );
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wdelch( win );
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} else {
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wmove( win, win->curs_y, --(win->curs_x) );
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wdelch( win );
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}
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} else if ( ch >= 0401 && ch <= 0633 ) {
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beep();
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} else {
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_wputch( win, (chtype)( ch | win->attrs ), WRAP );
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}
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}
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return ch;
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}
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/**
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* Read at most n characters from the FIFO into a window
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*
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* @v *win window in which to echo input
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* @v *str pointer to string in which to store result
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*/
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int wgetnstr ( WINDOW *win, char *str, int n ) {
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char *str_start;
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int c;
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if ( n < 0 )
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return ERR;
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str_start = str;
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for ( ; ( c = wgetch(win) ) && n; n-- ) {
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if ( n == 1 ) { // last character must be a newline...
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if ( c == '\n' ) {
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*str = '\0';
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} else { // ...otherwise beep and wait for one
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beep();
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++n;
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continue;
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}
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} else if ( c == '\n' ) {
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*str = '\0';
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break;
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} else {
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if ( c == KEY_LEFT || c == KEY_BACKSPACE ) {
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if ( ! ( str == str_start ) )
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str--;
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} else { *str = c; str++; }
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}
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}
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return OK;
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}
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