472 lines
11 KiB
C
472 lines
11 KiB
C
/* Public Domain Curses */
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#include <curspriv.h>
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RCSID("$Id: getstr.c,v 1.51 2008/07/14 04:24:51 wmcbrine Exp $")
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/*man-start**************************************************************
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Name: getstr
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Synopsis:
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int getstr(char *str);
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int wgetstr(WINDOW *win, char *str);
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int mvgetstr(int y, int x, char *str);
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int mvwgetstr(WINDOW *win, int y, int x, char *str);
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int getnstr(char *str, int n);
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int wgetnstr(WINDOW *win, char *str, int n);
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int mvgetnstr(int y, int x, char *str, int n);
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int mvwgetnstr(WINDOW *win, int y, int x, char *str, int n);
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int get_wstr(wint_t *wstr);
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int wget_wstr(WINDOW *win, wint_t *wstr);
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int mvget_wstr(int y, int x, wint_t *wstr);
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int mvwget_wstr(WINDOW *win, int, int, wint_t *wstr);
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int getn_wstr(wint_t *wstr, int n);
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int wgetn_wstr(WINDOW *win, wint_t *wstr, int n);
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int mvgetn_wstr(int y, int x, wint_t *wstr, int n);
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int mvwgetn_wstr(WINDOW *win, int y, int x, wint_t *wstr, int n);
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Description:
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These routines call wgetch() repeatedly to build a string,
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interpreting erase and kill characters along the way, until a
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newline or carriage return is received. When PDCurses is built
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with wide-character support enabled, the narrow-character
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functions convert the wgetch()'d values into a multibyte string
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in the current locale before returning it. The resulting string
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is placed in the area pointed to by *str. The routines with n as
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the last argument read at most n characters.
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Note that there's no way to know how long the buffer passed to
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wgetstr() is, so use wgetnstr() to avoid buffer overflows.
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Return Value:
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This functions return ERR on failure or any other value on
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success.
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Portability X/Open BSD SYS V
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getstr Y Y Y
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wgetstr Y Y Y
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mvgetstr Y Y Y
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mvwgetstr Y Y Y
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getnstr Y - 4.0
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wgetnstr Y - 4.0
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mvgetnstr Y - -
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mvwgetnstr Y - -
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get_wstr Y
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wget_wstr Y
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mvget_wstr Y
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mvwget_wstr Y
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getn_wstr Y
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wgetn_wstr Y
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mvgetn_wstr Y
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mvwgetn_wstr Y
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**man-end****************************************************************/
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#define MAXLINE 255
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int wgetnstr(WINDOW *win, char *str, int n)
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{
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#ifdef PDC_WIDE
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wchar_t wstr[MAXLINE + 1];
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if (n < 0 || n > MAXLINE)
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n = MAXLINE;
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if (wgetn_wstr(win, (wint_t *)wstr, n) == ERR)
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return ERR;
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return PDC_wcstombs(str, wstr, n);
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#else
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int ch, i, num, x, chars;
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char *p;
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bool stop, oldecho, oldcbreak, oldnodelay;
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PDC_LOG(("wgetnstr() - called\n"));
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if (!win || !str)
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return ERR;
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chars = 0;
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p = str;
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stop = FALSE;
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x = win->_curx;
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oldcbreak = SP->cbreak; /* remember states */
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oldecho = SP->echo;
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oldnodelay = win->_nodelay;
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SP->echo = FALSE; /* we do echo ourselves */
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cbreak(); /* ensure each key is returned immediately */
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win->_nodelay = FALSE; /* don't return -1 */
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wrefresh(win);
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while (!stop)
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{
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ch = wgetch(win);
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switch (ch)
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{
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case '\t':
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ch = ' ';
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num = TABSIZE - (win->_curx - x) % TABSIZE;
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for (i = 0; i < num; i++)
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{
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if (chars < n)
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{
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if (oldecho)
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waddch(win, ch);
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*p++ = ch;
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++chars;
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}
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else
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beep();
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}
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break;
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case _ECHAR: /* CTRL-H -- Delete character */
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if (p > str)
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{
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if (oldecho)
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waddstr(win, "\b \b");
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ch = (unsigned char)(*--p);
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if ((ch < ' ') && (oldecho))
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waddstr(win, "\b \b");
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chars--;
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}
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break;
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case _DLCHAR: /* CTRL-U -- Delete line */
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while (p > str)
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{
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if (oldecho)
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waddstr(win, "\b \b");
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ch = (unsigned char)(*--p);
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if ((ch < ' ') && (oldecho))
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waddstr(win, "\b \b");
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}
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chars = 0;
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break;
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case _DWCHAR: /* CTRL-W -- Delete word */
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while ((p > str) && (*(p - 1) == ' '))
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{
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if (oldecho)
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waddstr(win, "\b \b");
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--p; /* remove space */
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chars--;
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}
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while ((p > str) && (*(p - 1) != ' '))
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{
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if (oldecho)
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waddstr(win, "\b \b");
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ch = (unsigned char)(*--p);
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if ((ch < ' ') && (oldecho))
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waddstr(win, "\b \b");
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chars--;
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}
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break;
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case '\n':
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case '\r':
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stop = TRUE;
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if (oldecho)
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waddch(win, '\n');
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break;
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default:
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if (chars < n)
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{
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if (!SP->key_code && ch < 0x100)
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{
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*p++ = ch;
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if (oldecho)
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waddch(win, ch);
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chars++;
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}
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}
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else
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beep();
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break;
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}
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wrefresh(win);
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}
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*p = '\0';
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SP->echo = oldecho; /* restore old settings */
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SP->cbreak = oldcbreak;
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win->_nodelay = oldnodelay;
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return OK;
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#endif
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}
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int getstr(char *str)
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{
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PDC_LOG(("getstr() - called\n"));
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return wgetnstr(stdscr, str, MAXLINE);
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}
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int wgetstr(WINDOW *win, char *str)
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{
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PDC_LOG(("wgetstr() - called\n"));
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return wgetnstr(win, str, MAXLINE);
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}
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int mvgetstr(int y, int x, char *str)
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{
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PDC_LOG(("mvgetstr() - called\n"));
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if (move(y, x) == ERR)
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return ERR;
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return wgetnstr(stdscr, str, MAXLINE);
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}
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int mvwgetstr(WINDOW *win, int y, int x, char *str)
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{
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PDC_LOG(("mvwgetstr() - called\n"));
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if (wmove(win, y, x) == ERR)
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return ERR;
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return wgetnstr(win, str, MAXLINE);
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}
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int getnstr(char *str, int n)
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{
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PDC_LOG(("getnstr() - called\n"));
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return wgetnstr(stdscr, str, n);
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}
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int mvgetnstr(int y, int x, char *str, int n)
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{
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PDC_LOG(("mvgetnstr() - called\n"));
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if (move(y, x) == ERR)
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return ERR;
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return wgetnstr(stdscr, str, n);
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}
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int mvwgetnstr(WINDOW *win, int y, int x, char *str, int n)
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{
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PDC_LOG(("mvwgetnstr() - called\n"));
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if (wmove(win, y, x) == ERR)
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return ERR;
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return wgetnstr(win, str, n);
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}
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#ifdef PDC_WIDE
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int wgetn_wstr(WINDOW *win, wint_t *wstr, int n)
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{
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int ch, i, num, x, chars;
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wint_t *p;
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bool stop, oldecho, oldcbreak, oldnodelay;
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PDC_LOG(("wgetn_wstr() - called\n"));
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if (!win || !wstr)
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return ERR;
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chars = 0;
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p = wstr;
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stop = FALSE;
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x = win->_curx;
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oldcbreak = SP->cbreak; /* remember states */
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oldecho = SP->echo;
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oldnodelay = win->_nodelay;
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SP->echo = FALSE; /* we do echo ourselves */
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cbreak(); /* ensure each key is returned immediately */
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win->_nodelay = FALSE; /* don't return -1 */
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wrefresh(win);
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while (!stop)
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{
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ch = wgetch(win);
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switch (ch)
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{
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case '\t':
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ch = ' ';
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num = TABSIZE - (win->_curx - x) % TABSIZE;
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for (i = 0; i < num; i++)
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{
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if (chars < n)
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{
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if (oldecho)
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waddch(win, ch);
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*p++ = ch;
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++chars;
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}
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else
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beep();
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}
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break;
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case _ECHAR: /* CTRL-H -- Delete character */
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if (p > wstr)
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{
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if (oldecho)
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waddstr(win, "\b \b");
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ch = *--p;
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if ((ch < ' ') && (oldecho))
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waddstr(win, "\b \b");
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chars--;
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}
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break;
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case _DLCHAR: /* CTRL-U -- Delete line */
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while (p > wstr)
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{
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if (oldecho)
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waddstr(win, "\b \b");
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ch = *--p;
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if ((ch < ' ') && (oldecho))
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waddstr(win, "\b \b");
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}
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chars = 0;
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break;
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case _DWCHAR: /* CTRL-W -- Delete word */
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while ((p > wstr) && (*(p - 1) == ' '))
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{
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if (oldecho)
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waddstr(win, "\b \b");
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--p; /* remove space */
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chars--;
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}
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while ((p > wstr) && (*(p - 1) != ' '))
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{
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if (oldecho)
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waddstr(win, "\b \b");
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ch = *--p;
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if ((ch < ' ') && (oldecho))
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waddstr(win, "\b \b");
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chars--;
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}
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break;
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case '\n':
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case '\r':
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stop = TRUE;
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if (oldecho)
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waddch(win, '\n');
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break;
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default:
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if (chars < n)
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{
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if (!SP->key_code)
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{
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*p++ = ch;
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if (oldecho)
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waddch(win, ch);
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chars++;
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}
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}
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else
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beep();
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break;
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}
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wrefresh(win);
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}
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*p = '\0';
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SP->echo = oldecho; /* restore old settings */
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SP->cbreak = oldcbreak;
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win->_nodelay = oldnodelay;
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return OK;
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}
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int get_wstr(wint_t *wstr)
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{
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PDC_LOG(("get_wstr() - called\n"));
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return wgetn_wstr(stdscr, wstr, MAXLINE);
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}
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int wget_wstr(WINDOW *win, wint_t *wstr)
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{
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PDC_LOG(("wget_wstr() - called\n"));
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return wgetn_wstr(win, wstr, MAXLINE);
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}
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int mvget_wstr(int y, int x, wint_t *wstr)
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{
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PDC_LOG(("mvget_wstr() - called\n"));
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if (move(y, x) == ERR)
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return ERR;
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return wgetn_wstr(stdscr, wstr, MAXLINE);
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}
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int mvwget_wstr(WINDOW *win, int y, int x, wint_t *wstr)
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{
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PDC_LOG(("mvwget_wstr() - called\n"));
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if (wmove(win, y, x) == ERR)
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return ERR;
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return wgetn_wstr(win, wstr, MAXLINE);
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}
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int getn_wstr(wint_t *wstr, int n)
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{
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PDC_LOG(("getn_wstr() - called\n"));
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return wgetn_wstr(stdscr, wstr, n);
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}
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int mvgetn_wstr(int y, int x, wint_t *wstr, int n)
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{
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PDC_LOG(("mvgetn_wstr() - called\n"));
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if (move(y, x) == ERR)
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return ERR;
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return wgetn_wstr(stdscr, wstr, n);
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}
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int mvwgetn_wstr(WINDOW *win, int y, int x, wint_t *wstr, int n)
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{
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PDC_LOG(("mvwgetn_wstr() - called\n"));
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if (wmove(win, y, x) == ERR)
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return ERR;
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return wgetn_wstr(win, wstr, n);
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}
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#endif
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